技术领域technical field
本发明涉及一种智能风电场SCADA实时控制系统，具体地，涉及一种加密型Profinet通讯模式的智能风电场SCADA系统。The invention relates to an intelligent wind farm SCADA real-time control system, in particular to an intelligent wind farm SCADA system in an encrypted Profinet communication mode.
背景技术Background technique
由于风力发电机的工作环境恶劣，长年在没有管理人员参与的情况下运行，对其实时、可靠的监控较为重要。特别是对于大型风力发电厂，通常需要数十甚至上百台风力发电机进行集群控制，传统的风电场SCADA控制系统已经不能满足工业监控需求，其存在如下所述的问题。Due to the harsh working environment of wind turbines, which have been operating for many years without the participation of management personnel, real-time and reliable monitoring is very important. Especially for large-scale wind power plants, dozens or even hundreds of wind turbines are usually required for cluster control. The traditional SCADA control system of wind farms can no longer meet the needs of industrial monitoring, and it has the following problems.
1)系统安全性、可靠性差1) Poor system security and reliability
在工业生产过程中，工控系统的网络安全是开发人员在设计过程中必须考虑的重要因素，工业网络易受黑客非法入侵、病毒感染及非法操作等安全威胁。数据传输协议可能被入侵者破解，使得服务器存储数据泄露，甚至被破坏，严重威胁了电力系统的安全性和可靠性，直接影响到人们的生产发展和日常生活，造成重大财产损失。而且风电场的风力发电机数量较多，所需PLC控制器较多，如果无序的分配，不但影响后期风电场电力设备的扩容，且在采集数据上传过程中易出现混乱，造成数据存储出错，影响对现场风机的实时监控。In the process of industrial production, the network security of industrial control systems is an important factor that developers must consider in the design process. Industrial networks are vulnerable to security threats such as illegal hacking, virus infection, and illegal operations. The data transmission protocol may be cracked by intruders, causing the data stored in the server to be leaked or even destroyed, which seriously threatens the security and reliability of the power system, directly affects people's production, development and daily life, and causes heavy property losses. Moreover, there are a large number of wind turbines in the wind farm, and a large number of PLC controllers are required. If the distribution is disorderly, it will not only affect the expansion of the power equipment of the wind farm in the later stage, but also cause confusion in the process of collecting and uploading data, resulting in data storage errors. , affecting the real-time monitoring of on-site fans.
2)系统实时性差2) The real-time performance of the system is poor
一方面传统以太网依靠CSMA/CD机制，通过重新发送数据来解决数据传输过程中发生的冲突。显然，该机制是以付出时间为代价。特别是一旦发生故障，即使是数秒的时间，就可能导致整个生产的停止，甚至产生设备、人身安全事故。另一方面传统以太网采用CSMA/CD方式，当网络负荷过大的时候，其传输过程的不确定性难以满足工控系统的实时要求，因此传统以太网技术很难满足工控系统准确、定时通信的实时性要求。On the one hand, traditional Ethernet relies on the CSMA/CD mechanism to resolve conflicts during data transmission by resending data. Obviously, this mechanism comes at the expense of time. Especially once a failure occurs, even for a few seconds, it may lead to the stop of the entire production, and even cause equipment and personal safety accidents. On the other hand, the traditional Ethernet adopts the CSMA/CD mode. When the network load is too large, the uncertainty of the transmission process is difficult to meet the real-time requirements of the industrial control system. Real-time requirements.
3)系统架构适应性差3) Poor system architecture adaptability
C/S结构模式对本地中心监控无法满足远程用户的需求，兼容性差，移植困难，开发成本显得较高，如果硬件进行升级，则软件也要随之升级，提高了系统的开发运维成本。B/S结构模式因网络传输的延迟问题而导致客户端页面响应速度有所下降，使得单一远程监控的监控速度较慢。The C/S structure model cannot meet the needs of remote users for local center monitoring, poor compatibility, difficult transplantation, and high development costs. If the hardware is upgraded, the software will also be upgraded accordingly, which increases the development and maintenance costs of the system. The B/S structure mode reduces the response speed of the client page due to the delay of network transmission, which makes the monitoring speed of a single remote monitoring slower.
基于此，为了方便电力企业快速、实时的监控现场设备运行情况，通过利用一个安全可靠、灵活方便、效率高的工业监控系统，使风电企业实现风电场的“集中控制，少人值守”，远程管理风电场现场运行情况，减少运维成本，提高管理效率，更好的促进地区生产和生活水平的发展，上述问题亟待解决。Based on this, in order to facilitate the fast and real-time monitoring of on-site equipment operation by power companies, a safe, reliable, flexible, convenient, and efficient industrial monitoring system is used to enable wind power companies to realize "centralized control of wind farms with fewer people on duty". To manage the on-site operation of wind farms, reduce operation and maintenance costs, improve management efficiency, and better promote the development of regional production and living standards, the above problems need to be resolved urgently.
发明内容Contents of the invention
为解决上述问题，本发明提出了一种加密型Profinet通讯模式的智能风电场SCADA系统设计。In order to solve the above problems, the present invention proposes a design of an intelligent wind farm SCADA system in an encrypted Profinet communication mode.
本发明加密型Profinet通讯模式的智能风电场SCADA系统具体包括风机就地监控系统、风电场中央监控系统和远程互联网监测系统三个部分。The intelligent wind farm SCADA system in encrypted Profinet communication mode of the present invention specifically includes three parts: a wind farm local monitoring system, a wind farm central monitoring system and a remote Internet monitoring system.
1、所述风机就地监控系统由现场传感器模块和现场PLC控制器模块组成。1. The wind turbine on-site monitoring system is composed of an on-site sensor module and an on-site PLC controller module.
所述现场传感器模块，布置在风力发电机塔筒内，主要负责采集现场数据，然后将数据传送至PLC控制器模块。The on-site sensor module is arranged in the tower of the wind power generator, and is mainly responsible for collecting on-site data, and then transmitting the data to the PLC controller module.
所述现场PLC控制器模块，布置在风力发电机塔筒控制柜内，通过传感器的模拟量输入通道采集风速、风力、风向等参数值；通过模拟量的输出通道发送有关信号，对风机进行变频调速控制，并通过数字量输出通道对设备进行控制。所述PLC控制器存储现场数据，并通过Profinet工业以太网将现场数据上传至中央监控室上位PC机。The on-site PLC controller module is arranged in the wind turbine tower control cabinet, and collects wind speed, wind force, wind direction and other parameter values through the analog input channel of the sensor; sends relevant signals through the analog output channel, and performs frequency conversion on the fan Speed control, and control the equipment through digital output channels. The PLC controller stores field data, and uploads the field data to the upper PC in the central monitoring room through the Profinet industrial Ethernet.
2、所述风电场中央监控系统由中央监控室上位PC机模块、OPC DA服务器模块、OPCXML-DA服务器模块和Web服务器模块组成。所述风电场中央监控系统是现场级与远程监控管理级的枢纽，完成对各现场设备、运行参数等的监控和管理；同时完成报警记录、报表生成和历史数据查看等服务功能；对过程数据进行存储，生成历史记录。2. The wind farm central monitoring system is composed of an upper PC module in the central monitoring room, an OPC DA server module, an OPCXML-DA server module and a Web server module. The central monitoring system of the wind farm is the hub of the on-site level and the remote monitoring and management level, and completes the monitoring and management of various on-site equipment and operating parameters; at the same time, it completes service functions such as alarm records, report generation, and historical data viewing; process data Store and generate history.
所述中央监控室上位PC机模块，布置在风电场控制室内，根据所述上位PC机端画面的切换随时控制和了解风力发电机的运行和操作。包括报表模块、报警和事件处理模块、实时和历史曲线模块。所述上位PC机模块可用组态软件进行开发，能够在中心监控室计算机显示现场设备的实时状态和运行参数，通过局域网实现风电数据的采集和监控功能。The upper PC module of the central monitoring room is arranged in the control room of the wind farm, and controls and understands the operation and operation of the wind power generator at any time according to the switching of the screen of the upper PC. Including report module, alarm and event processing module, real-time and historical curve module. The upper PC module can be developed with configuration software, which can display the real-time status and operating parameters of field equipment on the computer in the central monitoring room, and realize the collection and monitoring functions of wind power data through the local area network.
其中所述报表模块，主要是利用存储在服务器内的各PLC站传输的带时标数据提供报表服务功能，上位机系统对服务器内的历史数据进行统计和分析后，生成符合操作人员需求的报表格式并打印。管理和操作人员通过分析系统的历史数据趋势，判断风机运行状态是否正常。Among them, the report module mainly uses the time-stamped data transmitted by each PLC station stored in the server to provide report service functions. After the host computer system performs statistics and analysis on the historical data in the server, it generates reports that meet the needs of operators. format and print. Managers and operators can judge whether the fan is running normally by analyzing the historical data trend of the system.
报警和事件处理模块，能及时的报告现场机组设备运行过程中可能出现的故障，并通过报警模式或画面显示状态示警管理和操作人员。持续监测设备运行过程中出现的故障等，同时通过报警设置或者监控画面告知管理和操作人员，及时解决出现的故障，从而避免风机运行过程中出现重大事故。The alarm and event processing module can timely report possible faults during the operation of the on-site unit equipment, and warn the management and operators through the alarm mode or the status displayed on the screen. Continuously monitor the faults that occur during the operation of the equipment, and at the same time inform the management and operators through the alarm setting or monitoring screen, and solve the faults in time, so as to avoid major accidents during the operation of the fan.
实时和历史曲线模块，通过从风电场获得的数据绘制而成的一个或多个对象值的图形曲线，宏观记录数据在一定周期内的变化动态；历史曲线表明风电运行参数在给定时间段内的变化趋势，操作人员定义曲线的相应参数，并通过数据库操作显示历史曲线，较为直观的反映出风机运行状况，便于管理和操作人员作出相应调整。The real-time and historical curve module, through the graphic curve of one or more object values drawn from the data obtained from the wind farm, macroscopically records the change dynamics of the data within a certain period; the historical curve shows that the wind power operating parameters are in a given period of time The operator defines the corresponding parameters of the curve, and displays the historical curve through the database operation, which more intuitively reflects the operation status of the fan, and is convenient for management and operators to make corresponding adjustments.
所述OPC DA服务器模块，布置在风电场中央监控室内，所述OPC DA服务器，将风电现场采集到的实时数据存储起来，并在后台对实时数据进行分析、计算，显示风机各模块的运行情况，生成历史报表。管理者通过访问所述OPC DA服务器，获得风机运行的实时数据、历史存储数据等。The OPC DA server module is arranged in the central monitoring room of the wind farm. The OPC DA server stores the real-time data collected from the wind farm site, analyzes and calculates the real-time data in the background, and displays the operation status of each module of the wind farm. , to generate a historical report. By accessing the OPC DA server, the manager obtains the real-time data of fan operation, historical storage data, and the like.
所述OPC XML-DA服务器模块，布置在风电场控制室内，通过Web服务技术将OPC应用扩展到整个网络，将现有的OPC DA服务器进行二次开发，通过一个XML包装器，将原来的OPC XML服务器XML化，对外提供Web服务。有效地解决了现有风电场SCADA系统中OPC通信协议无法通过防火墙的弊病，使SCADA系统中可以实现可靠的远程通信。The OPC XML-DA server module is arranged in the control room of the wind farm, and the OPC application is extended to the entire network through the Web service technology, and the existing OPC DA server is redeveloped, and the original OPC DA server is developed through an XML wrapper. The XML server is XMLized and provides Web services externally. It effectively solves the disadvantage that the OPC communication protocol in the existing wind farm SCADA system cannot pass through the firewall, so that reliable remote communication can be realized in the SCADA system.
所述Web服务器模块，布置在风电场控制室内，当所述Web浏览器与所述OPC XML-DA服务器建立连接，并通过客户端发布请求时，所述OPC XML-DA服务器响应该请求，并将XML文件反馈至所述Web浏览器，远程管理和操作人员即可通过所述Web浏览器查看数据文件。The Web server module is arranged in the control room of the wind farm. When the Web browser establishes a connection with the OPC XML-DA server and issues a request through the client, the OPC XML-DA server responds to the request, and The XML file is fed back to the Web browser, and the remote management and operation personnel can view the data file through the Web browser.
3、所述远程互联网监测系统由Web浏览器模块组成。3. The remote Internet monitoring system is composed of a Web browser module.
所述Web浏览器模块，使得异地的管理和操作人员通过Internet远程查看风电场机组运行情况及各类参数值，从而实现远程对风电场的监控和设备维护等功能。管理者在线发送调度指令，通过所述Web浏览器对风电场机组设备进行实时监控调度，减少风电场运行过程中的严重事故和故障。The Web browser module enables managers and operators in different places to remotely view the operation status of the wind farm unit and various parameter values through the Internet, thereby realizing functions such as remote monitoring of the wind farm and equipment maintenance. The manager sends scheduling instructions online, and performs real-time monitoring and scheduling of the wind farm unit equipment through the web browser, reducing serious accidents and failures during the operation of the wind farm.
所述加密型Profinet通讯模式的智能风电场SCADA系统采用了B/S和C/S相结合的架构开发模式，区别于传统的单一B/S或C/S架构模式，所述系统不仅能通过C/S模式实现对本地风电场的监控，而且能通过B/S模式在异地情况下远程实现对所述风电场的监控。有效的改善了系统架构适应性差的问题。使得系统监控不再局限于本地监控，解决了监控距离的问题，而且还解决了远程监控中存在的速度慢、可靠性不高及实时性也不如本地监控高等问题。异地的管理和操作人员使用B/S模式监控风电场，在远程客户端通过所述Web浏览器查看风机运行参数值，实现对风机的管理和操作。本地的管理和操作人员则通过使用C/S模式对风电系统监控和管理。实现了局域网实时监控和远程互联网在线监控的双重监控，充分使风电企业实现风电场的“集中控制，少人值守”，大大减少运维成本，提高管理效率。The intelligent wind farm SCADA system in the encrypted Profinet communication mode adopts the architecture development mode combining B/S and C/S, which is different from the traditional single B/S or C/S architecture mode. The system can not only pass The C/S mode realizes the monitoring of the local wind farm, and the remote monitoring of the wind farm can be realized in different places through the B/S mode. Effectively improve the poor adaptability of the system architecture. It makes system monitoring no longer limited to local monitoring, solves the problem of monitoring distance, and also solves the problems of slow speed, low reliability and real-time performance in remote monitoring that are not as high as local monitoring. The management and operation personnel in different places use the B/S mode to monitor the wind farm, and view the operating parameter values of the wind turbine through the web browser on the remote client to realize the management and operation of the wind turbine. Local management and operators use the C/S mode to monitor and manage the wind power system. Realized the dual monitoring of local area network real-time monitoring and remote Internet online monitoring, which fully enabled wind power enterprises to realize "centralized control of wind farms with fewer people on duty", greatly reducing operation and maintenance costs and improving management efficiency.
4、所述加密型Profinet通讯模式的智能风电场SCADA系统的数据传输。4. The data transmission of the smart wind farm SCADA system in the encrypted Profinet communication mode.
所述PLC控制器将采集到的数据通过底层PLC发送器与上位PC机接收器传输。在接收端，由Profinet工业以太网与帧类型标识符相结合，对传输的数据帧进行识别。根据所述数据库服务器注册表信息，与底层PLC控制器传输的用户名、密码信息匹配，确保数据包在传输过程中有固定的安全认证机制。所述DES算法加密是随机字符产生随机密钥，所述密钥通过数据帧发送到所述上位PC机接收器并进行解密。根据帧内的PLC编号和控制器类型标识，与所述数据库服务器信息匹配，确定接收风电场现场实时采集的数据。所述上位PC机接收器接收数据包的实时数据后，通过组态软件进行实时监控。具体步骤如下所示：The PLC controller transmits the collected data through the underlying PLC transmitter and the upper PC receiver. At the receiving end, the transmitted data frame is identified by combining the Profinet Industrial Ethernet with the frame type identifier. According to the registry information of the database server, it is matched with the user name and password information transmitted by the underlying PLC controller to ensure that the data packets have a fixed security authentication mechanism during transmission. The encryption of the DES algorithm is that random characters generate a random key, and the key is sent to the receiver of the upper PC through a data frame and decrypted. According to the PLC number and controller type identification in the frame, match with the database server information, and determine to receive the data collected in real time at the wind farm site. After the host PC receiver receives the real-time data of the data packet, real-time monitoring is carried out through the configuration software. The specific steps are as follows:
步骤1，所述风机就地监控系统将由传感器实时采集到的模拟量信号转换为数字量信号存入PLC控制器内，现场管理者通过PLC触摸屏查看现场设备运行状态和各类参数值，完成对现场设备的调度功能；Step 1. The on-site monitoring system of the fan converts the analog signal collected by the sensor in real time into a digital signal and stores it in the PLC controller. The on-site manager checks the operating status of the on-site equipment and various parameter values through the PLC touch screen to complete the monitoring. Scheduling function of field equipment;
步骤2，所述PLC控制器通过Profinet工业以太网通信协议将实时数据发送到风电场中央监控系统，所述中央监控室上位PC机接收该实时数据并显示现场画面及设备运行状态实时参数值；Step 2, the PLC controller sends the real-time data to the central monitoring system of the wind farm through the Profinet industrial Ethernet communication protocol, and the upper PC in the central monitoring room receives the real-time data and displays the on-site picture and the real-time parameter value of the equipment operation status;
步骤3，所述上位PC机接收下位机系统采集到的数据，同时将数据通过局域网存储至OPC DA服务器，即所谓的数据库服务器；Step 3, the upper PC machine receives the data collected by the lower computer system, and stores the data to the OPC DA server through the local area network, that is, the so-called database server;
步骤4，所述OPC DA服务器将数据同时传至OPC XML-DA服务器，所述OPC XML-DA服务器以XML格式存储实时数据；Step 4, the OPC DA server transmits data to the OPC XML-DA server simultaneously, and the OPC XML-DA server stores real-time data in XML format;
步骤5，客户端用户通过所述Web浏览器对应界面的功能服务向Web服务器发送请求指令，随后，所述Web服务器根据客户端发出的请求指令与所述OPC XML-DA服务器开始通信；Step 5, the client user sends a request instruction to the Web server through the functional service of the corresponding interface of the Web browser, and then the Web server starts communicating with the OPC XML-DA server according to the request instruction sent by the client;
步骤6，所述Web服务器与OPC XML-DA服务器通信，根据具体的OPC接口规范执行相关请求和获得有关数据，响应结果通过Web浏览器显示；Step 6, the web server communicates with the OPC XML-DA server, executes relevant requests and obtains relevant data according to specific OPC interface specifications, and the response result is displayed by a web browser;
步骤7，若风机运行出现故障，需要远程调整风机运行状态，所述Web服务器将与OPC DA服务器进行通信，将请求传送至上位PC机，所述上位PC机画面及运行参数相应改变；Step 7, if the blower fan fails to operate, the running state of the blower fan needs to be adjusted remotely, the web server will communicate with the OPC DA server, and the request will be sent to the upper PC, and the screen and operating parameters of the upper PC will be changed accordingly;
步骤8，所述上位PC机将请求通过Profinet工业以太网传送至现场PLC控制器，所述现场PLC控制器解析由风电场中央监控系统、远程互联网监测系统传达到各设备的指令，响应相关请求并执行指令，对现场设备进行调度，解决风机出现的故障，最后返回响应结果至Web浏览器客户端，完成操作请求。Step 8, the upper PC sends the request to the on-site PLC controller through the Profinet industrial Ethernet, and the on-site PLC controller analyzes the instructions transmitted to each device by the wind farm central monitoring system and the remote Internet monitoring system, and responds to relevant requests And execute the command, schedule the on-site equipment, solve the fault of the fan, and finally return the response result to the web browser client to complete the operation request.
所述风机就地监控系统与所述风电场中央监控系统之间采用Profinet工业以太网通信连接。Profinet工业以太网使用了一种基于时隙的分时调度以太网实时通信方法，在传统以太网通信栈MAC层上增加一层协议，实现对数据的统一调度，在不需更改原有以太网运行机制的前提下，避免了CSMA/CD机制数据通信可能产生的冲突，提高了通信调度的可靠性。The on-site monitoring system of the wind turbine is connected to the central monitoring system of the wind farm through Profinet industrial Ethernet communication. Profinet Industrial Ethernet uses a time-slot-based time-sharing scheduling Ethernet real-time communication method, adding a layer of protocol on the MAC layer of the traditional Ethernet communication stack to achieve unified scheduling of data, without changing the original Ethernet Under the premise of operating the mechanism, it avoids the possible conflicts in the data communication of the CSMA/CD mechanism, and improves the reliability of communication scheduling.
所述Profinet工业以太网采用等时同步机制，在多周期传输过程中，将其传输通道分为IRT/开发通道。IRT通道用来进行IRT通信，传递IRT数据；开发通道用来进行RT通信和标准通信，其中RT通信传递RTC、RTA数据，标准通信传递NRT数据。灵活使用RT和IRT通信特性，充分利用网络资源，优化网络结构，进一步提高了传统以太网的实时特性。The Profinet industrial Ethernet adopts an isochronous synchronization mechanism, and its transmission channels are divided into IRT/development channels during the multi-cycle transmission process. The IRT channel is used for IRT communication and transfers IRT data; the development channel is used for RT communication and standard communication, where RT communication transfers RTC and RTA data, and standard communication transfers NRT data. Flexible use of RT and IRT communication features, full use of network resources, optimization of network structure, and further improve the real-time characteristics of traditional Ethernet.
其特征在于，所述底层PLC发送器向所述上位PC机接收器请求注册及登录。用户代理客户端程序启动后，首先向数据库服务器发送注册信息，注册的主要内容包括该客户端的用户名、密码、IP地址、监听端口号等信息，数据库服务器记录这些信息，形成注册信息表。注册成功后，系统启动监听线程，实时监听端口接收到的数据包，通过相关接口解析判断。具体步骤如下所述。It is characterized in that the bottom PLC transmitter requests registration and login to the upper PC receiver. After the user agent client program is started, it first sends registration information to the database server. The main content of the registration includes information such as the user name, password, IP address, and listening port number of the client. The database server records these information to form a registration information table. After the registration is successful, the system starts the monitoring thread, monitors the data packets received by the port in real time, and analyzes and judges through the relevant interface. The specific steps are as follows.
步骤101，所述上位PC机接收器接收数据包，执行注册鉴权步骤，所述底层PLC发送器向所述上位PC机接收器发起INVITE注册请求；Step 101, the upper PC receiver receives the data packet, and performs a registration authentication step, and the bottom PLC transmitter initiates an INVITE registration request to the upper PC receiver;
步骤102，根据数据库服务器的注册信息表判断，若用户名、密码正确，则确认INVITE消息响应，建立通信，否则拒绝接收数据包；Step 102, judging according to the registration information table of the database server, if the user name and the password are correct, then confirm the INVITE message response, establish communication, otherwise refuse to receive the data packet;
步骤103，所述底层PLC发送器向所述上位PC机发起密钥加密过程；Step 103, the underlying PLC transmitter initiates a key encryption process to the upper PC;
步骤104，所述底层PLC发送器向所述上位PC机发送随机密钥；Step 104, the bottom PLC sender sends a random key to the upper PC;
步骤105，所述上位PC机接收器提取密钥，使用密钥解密数据包中的实时RT/IRT数据，然后传至所述数据库服务器，根据PLC编号和PLC控制器类型进行匹配；Step 105, the host PC receiver extracts the key, uses the key to decrypt the real-time RT/IRT data in the data packet, then transmits to the database server, and matches according to the PLC number and the PLC controller type;
步骤106，若匹配成功，所述数据库服务器将匹配结果返回至所述上位PC机接收器，确认具体信息；例如，PLC编号001代表PLC控制器1，002代表PLC控制器2，依次区分开不同编号的PLC控制器；PLC控制器类型01代表微型机，02代表小型机，03代表中型机，04代表大型机，05代表超大型机。数据匹配方便了后期对系统PLC控制器的扩容，进行深入改造；Step 106, if the matching is successful, the database server will return the matching result to the host PC receiver to confirm the specific information; for example, PLC number 001 represents PLC controller 1, and 002 represents PLC controller 2, and distinguishes different Numbered PLC controller; PLC controller type 01 represents microcomputer, 02 represents small computer, 03 represents medium-sized computer, 04 represents large-scale computer, and 05 represents super-large computer. Data matching facilitates the expansion of the PLC controller of the system in the later stage, and carries out in-depth transformation;
步骤107，所述上位PC机将匹配成功信息反馈至所述底层PLC发送器，继续进行下一数据包的传输；循环执行上述过程，所述上位PC机接收器接收数据包，传至组态软件客户端实时显示。Step 107, the upper PC feeds back matching success information to the bottom PLC transmitter, and continues the transmission of the next data packet; cyclically executes the above process, and the upper PC receiver receives the data packet and passes it to the configuration The software client displays in real time.
在通信过程中数据传输采用注册密码登录和DES算法加密技术，增强了数据传输过程中的安全性。During the communication process, the data transmission adopts the registration password login and the DES algorithm encryption technology, which enhances the security during the data transmission process.
附图说明Description of drawings
图1为本发明加密型Profinet通讯模式的智能风电场SCADA系统结构示意图，包括：风机就地监控系统、风电场中央监控系统、远程互联网监测系统。Fig. 1 is a schematic structural diagram of the intelligent wind farm SCADA system in encrypted Profinet communication mode according to the present invention, including: a wind turbine local monitoring system, a wind farm central monitoring system, and a remote Internet monitoring system.
图2为本发明加密型Profinet通讯模式的智能风电场SCADA系统的Profinet连接建立与删除及加密通信过程示意图。Fig. 2 is a schematic diagram of the establishment and deletion of the Profinet connection and the encrypted communication process of the smart wind farm SCADA system in the encrypted Profinet communication mode of the present invention.
图3为本发明加密型Profinet通讯模式的智能风电场SCADA系统信息传输过程中的实时帧结构示意图。Fig. 3 is a schematic diagram of the real-time frame structure during the information transmission process of the intelligent wind farm SCADA system in the encrypted Profinet communication mode of the present invention.
具体实施方式detailed description
下面将结合实施例中的附图来更好地阐明本发明技术，以下为具体描述。The technology of the present invention will be better elucidated below in conjunction with the accompanying drawings in the embodiments, and the following is a specific description.
本发明提供了一种加密型Profinet通讯模式的智能风电场SCADA系统，所述风机就地监控系统将由传感器实时采集到的模拟量信号转换为数字量信号存入PLC控制器内，所述PLC控制器通过Profinet工业以太网通信协议将信号发送到所述风电场中央监控系统，解析由所述风电场中央监控系统、远程互联网监测系统传达到各设备的指令。管理和操作人员既能够通过C/S模式实现对风电系统的本地实时监控，又能够通过B/S模式实现远程对风电系统的异地实时监控。The present invention provides an intelligent wind farm SCADA system in an encrypted Profinet communication mode. The on-site monitoring system of the wind turbine converts the analog signal collected by the sensor in real time into a digital signal and stores it in the PLC controller. The PLC controls The controller sends signals to the central monitoring system of the wind farm through the Profinet industrial Ethernet communication protocol, and analyzes the instructions transmitted to each device by the central monitoring system of the wind farm and the remote Internet monitoring system. Managers and operators can not only realize the local real-time monitoring of the wind power system through the C/S mode, but also realize the remote real-time monitoring of the wind power system in different places through the B/S mode.
图1给出了本发明的系统结构示意图，本发明实施的风电场实时监控系统采用了分散控制集中管理的开放、分布式控制系统。具体为：该种加密型Profinet通讯模式的智能风电场SCADA系统，具体包括风机就地监控系统、风电场中央监控系统和远程互联网监测系统。Fig. 1 shows a schematic diagram of the system structure of the present invention. The wind farm real-time monitoring system implemented in the present invention adopts an open and distributed control system with decentralized control and centralized management. Specifically: this kind of encrypted Profinet communication mode intelligent wind farm SCADA system, specifically including wind turbine local monitoring system, wind farm central monitoring system and remote Internet monitoring system.
所述风机就地监控系统包括PLC控制器模块和采集信号的传感器模块。The wind turbine local monitoring system includes a PLC controller module and a sensor module for collecting signals.
所述现场传感器模块，布置在风力发电机塔筒内，主要负责采集现场数据，然后将数据传送至PLC控制器模块。The on-site sensor module is arranged in the tower of the wind power generator, and is mainly responsible for collecting on-site data, and then transmitting the data to the PLC controller module.
所述现场PLC控制器组模块，布置在风力发电机塔筒控制柜内，通过传感器的模拟量输入通道采集风速、风力、风向等参数值；通过模拟量的输出通道发送有关信号，对风机进行变频调速控制。所述PLC控制器存储现场数据，并通过Profinet工业以太网将各种信号上传至中心监控室和数据库服务器。The on-site PLC controller group module is arranged in the wind turbine tower control cabinet, and collects wind speed, wind force, wind direction and other parameter values through the analog input channel of the sensor; sends relevant signals through the analog output channel to control the fan. Frequency conversion speed control. The PLC controller stores field data and uploads various signals to the central monitoring room and database server through the Profinet industrial Ethernet.
所述风电场中央监控系统包括中央监控室上位PC机模块、OPC DA服务器模块、OPCXML-DA服务器模块和Web服务器模块。The wind farm central monitoring system includes an upper PC module in the central monitoring room, an OPC DA server module, an OPCXML-DA server module and a Web server module.
所述中央监控室上位PC机模块，布置在风电场控制室内，包括报表模块、报警和事件处理模块、实时和历史曲线模块。所述上位PC机模块可用组态软件进行开发，能够在中心监控室计算机显示现场设备的实时状态和运行参数，通过局域网实现风电数据的采集和监控功能。The upper PC module of the central monitoring room is arranged in the control room of the wind farm, including a reporting module, an alarm and event processing module, and a real-time and historical curve module. The upper PC module can be developed with configuration software, which can display the real-time status and operating parameters of field equipment on the computer in the central monitoring room, and realize the collection and monitoring functions of wind power data through the local area network.
其中所述报表模块，主要是利用存储在服务器内的各PLC站传输的带时标数据提供报表服务功能，上位机系统对服务器内的历史数据进行统计和分析后，生成符合操作人员需求的报表格式并打印。管理和操作人员通过分析系统的历史数据趋势，判断风机运行状态是否正常。Among them, the report module mainly uses the time-stamped data transmitted by each PLC station stored in the server to provide report service functions. After the host computer system performs statistics and analysis on the historical data in the server, it generates reports that meet the needs of operators. format and print. Managers and operators can judge whether the fan is running normally by analyzing the historical data trend of the system.
报警和事件处理模块，能及时的报告现场机组设备运行过程中可能出现的故障，并通过报警模式或画面显示状态示警管理和操作人员。持续监测设备运行过程中出现的故障等，同时通过报警设置或者监控画面告知管理和操作人员，及时解决出现的故障，从而避免风机运行过程中出现重大事故。The alarm and event processing module can timely report possible faults during the operation of the on-site unit equipment, and warn the management and operators through the alarm mode or the status displayed on the screen. Continuously monitor the faults that occur during the operation of the equipment, and at the same time inform the management and operators through the alarm setting or monitoring screen, and solve the faults in time, so as to avoid major accidents during the operation of the fan.
实时和历史曲线模块，通过从风电场获得的数据绘制而成的一个或多个对象值的图形曲线，宏观记录数据在一定周期内的变化动态；历史曲线表明风电运行参数在给定时间段内的变化趋势，操作人员定义曲线的相应参数，并通过数据库操作显示历史曲线，较为直观的反映出风机运行状况，便于管理和操作人员发现故障并实现全局调度。The real-time and historical curve module, through the graphic curve of one or more object values drawn from the data obtained from the wind farm, macroscopically records the change dynamics of the data within a certain period; the historical curve shows that the wind power operating parameters are in a given period of time The operator defines the corresponding parameters of the curve, and displays the historical curve through the database operation, which more intuitively reflects the operation status of the fan, and is convenient for management and operators to find faults and realize global scheduling.
所述OPC DA服务器模块，布置在风电场中央监控室内，所述OPC DA服务器，将风电现场采集到的实时数据存储起来，并在后台对实时数据进行分析、计算，显示风机各模块的运行情况，生成历史报表。管理者通过访问所述OPC DA服务器，获得风机运行的实时数据、历史存储数据等。The OPC DA server module is arranged in the central monitoring room of the wind farm. The OPC DA server stores the real-time data collected from the wind farm site, analyzes and calculates the real-time data in the background, and displays the operation status of each module of the wind farm. , to generate a historical report. By accessing the OPC DA server, the manager obtains the real-time data of fan operation, historical storage data, and the like.
所述OPC XML-DA服务器模块，布置在风电场控制室内，通过Web服务技术将OPC应用扩展到整个网络，将现有的OPC DA服务器进行二次开发，通过一个XML包装器，将原来的OPC XML服务器XML化，对外提供Web服务。有效地解决了现有风电场SCADA系统中OPC通信协议无法通过防火墙的弊病，使SCADA系统中可以实现可靠的远程通信。The OPC XML-DA server module is arranged in the control room of the wind farm, and the OPC application is extended to the entire network through the Web service technology, and the existing OPC DA server is redeveloped, and the original OPC DA server is developed through an XML wrapper. The XML server is XMLized and provides Web services externally. It effectively solves the disadvantage that the OPC communication protocol in the existing wind farm SCADA system cannot pass through the firewall, so that reliable remote communication can be realized in the SCADA system.
所述Web服务器模块，布置在风电场控制室内，当所述Web浏览器与所述OPC XML-DA服务器建立连接，并通过客户端发布请求时，所述OPC XML-DA服务器响应该请求，并将XML文件反馈至所述Web浏览器，远程管理和操作人员即可通过所述Web浏览器查看数据文件。The Web server module is arranged in the control room of the wind farm. When the Web browser establishes a connection with the OPC XML-DA server and issues a request through the client, the OPC XML-DA server responds to the request, and The XML file is fed back to the Web browser, and the remote management and operation personnel can view the data file through the Web browser.
远程互联网监测系统，包括远程监控计算机Web浏览器模块。The remote Internet monitoring system includes a remote monitoring computer Web browser module.
所述Web浏览器模块，使得异地的管理和操作人员通过Internet远程查看风电场机组运行情况及各类参数值，从而实现异地情况下远程对风电场的监控和设备维护等功能。管理者在线发送调度指令，通过所述Web浏览器对风电场机组设备进行实时监控调度，减少风电场运行过程中的严重事故和故障。The Web browser module enables managers and operators in different places to remotely view the operation status and various parameter values of wind farm units through the Internet, thereby realizing functions such as remote monitoring and equipment maintenance of wind farms in different places. The manager sends scheduling instructions online, and performs real-time monitoring and scheduling of the wind farm unit equipment through the web browser, reducing serious accidents and failures during the operation of the wind farm.
所述风机就地监控系统主要用于通过传感器采集、上传数据，完成风电场现场运行数据的实时传输，主要采用OPC的通信模式，提供OPC通信服务，使用OPC XML-DA控制系统通信协议进行开发。所述上位PC机的Web服务器作为所述OPC XML-DA服务器和OPC DA服务器的代理，将所述Web客户端与各服务器连接，向远程用户提供对本地风机实况的访问。有效地解决了现有风电场SCADA系统中OPC通信协议无法通过防火墙的弊病，使SCADA系统中可以实现可靠的远程通信。所述风电场中央监控系统，实现对风电数据的统计、分析和监控功能，对风电场的运行管理、设备维护、发电量大小统一进行调度。所述远程互联网监测系统，通过所述Web浏览器实现在异地情况下远程监控风电数据信息的变化。The wind turbine on-site monitoring system is mainly used to collect and upload data through sensors, and complete the real-time transmission of on-site operation data of the wind farm. It mainly adopts the OPC communication mode to provide OPC communication services, and uses the OPC XML-DA control system communication protocol for development. . The Web server of the upper PC acts as the agent of the OPC XML-DA server and the OPC DA server, connects the Web client with each server, and provides remote users with live access to the local fan. It effectively solves the disadvantage that the OPC communication protocol in the existing wind farm SCADA system cannot pass through the firewall, so that reliable remote communication can be realized in the SCADA system. The central monitoring system of the wind farm realizes the statistics, analysis and monitoring functions of wind power data, and uniformly dispatches the operation management, equipment maintenance, and power generation of the wind farm. The remote Internet monitoring system implements remote monitoring of changes in wind power data information in different places through the Web browser.
所述PLC控制器将采集到的数据通过底层PLC发送器与上位PC机接收器传输。在接收端，由Profinet工业以太网与帧类型标识符相结合，对传输的数据帧进行识别。根据所述数据库服务器注册表信息，与底层PLC控制器传输的用户名、密码信息匹配，确保数据包在传输过程中有固定的安全认证机制。所述DES算法加密是随机字符产生随机密钥，所述密钥通过数据帧发送到所述上位PC机接收器并进行解密。根据帧内的PLC编号和控制器类型标识，与所述数据库服务器信息匹配，确定接收风电场现场实时采集的数据。所述上位PC机接收器接收数据包的实时数据后，通过组态软件进行实时监控。具体步骤如下所示：The PLC controller transmits the collected data through the underlying PLC transmitter and the upper PC receiver. At the receiving end, the transmitted data frame is identified by combining the Profinet Industrial Ethernet with the frame type identifier. According to the registry information of the database server, it is matched with the user name and password information transmitted by the underlying PLC controller to ensure that the data packets have a fixed security authentication mechanism during transmission. The encryption of the DES algorithm is that random characters generate a random key, and the key is sent to the receiver of the upper PC through a data frame and decrypted. According to the PLC number and controller type identification in the frame, match with the database server information, and determine to receive the data collected in real time at the wind farm site. After the host PC receiver receives the real-time data of the data packet, real-time monitoring is carried out through the configuration software. The specific steps are as follows:
步骤1，所述风机就地监控系统将由传感器实时采集到的模拟量信号转换为数字量信号存入PLC控制器内，现场管理者通过PLC触摸屏查看现场设备运行状态和各种参数值，完成对现场设备的调度功能；Step 1. The on-site monitoring system of the fan converts the analog signal collected by the sensor in real time into a digital signal and stores it in the PLC controller. The on-site manager checks the operating status and various parameter values of the on-site equipment through the PLC touch screen to complete the monitoring. Scheduling function of field equipment;
步骤2，所述PLC控制器通过Profinet实时工业以太网通信协议将实时数据发送到所述风电场中央监控系统，中央监控室上位PC机接收该实时数据并显示现场画面及设备运行状态实时参数值；Step 2, the PLC controller sends the real-time data to the central monitoring system of the wind farm through the Profinet real-time industrial Ethernet communication protocol, and the upper PC in the central monitoring room receives the real-time data and displays the on-site picture and the real-time parameter value of the equipment operation status ;
步骤3，所述上位PC机接收下位机系统采集到的数据，同时将数据通过局域网存储至OPC DA服务器，即所谓的数据库服务器；Step 3, the upper PC machine receives the data collected by the lower computer system, and stores the data to the OPC DA server through the local area network, that is, the so-called database server;
步骤4，所述OPC DA服务器将数据同时传至OPC XML-DA服务器，所述OPC XML-DA服务器以XML格式存储实时数据；Step 4, the OPC DA server transmits data to the OPC XML-DA server simultaneously, and the OPC XML-DA server stores real-time data in XML format;
步骤5，客户端用户通过所述Web浏览器对应界面的功能服务向Web服务器发送请求指令，随后，所述Web服务器根据客户端发出的请求指令与所述OPC XML-DA服务器开始通信；Step 5, the client user sends a request instruction to the Web server through the functional service of the corresponding interface of the Web browser, and then the Web server starts communicating with the OPC XML-DA server according to the request instruction sent by the client;
步骤6，所述Web服务器与OPC XML-DA服务器通信，根据具体的OPC接口规范执行相关请求和获得有关数据，响应结果通过Web浏览器显示；Step 6, the web server communicates with the OPC XML-DA server, executes relevant requests and obtains relevant data according to specific OPC interface specifications, and the response result is displayed by a web browser;
步骤7，若风机运行出现故障，需要远程调整风机运行状态，所述Web服务器将与OPC DA服务器进行通信，将请求传送至上位PC机，所述上位PC机画面及运行参数相应改变；Step 7, if the blower fan fails to operate, the running state of the blower fan needs to be adjusted remotely, the web server will communicate with the OPC DA server, and the request will be sent to the upper PC, and the screen and operating parameters of the upper PC will be changed accordingly;
步骤8，所述上位PC机将请求通过Profinet工业以太网传送至现场PLC控制器，所述现场PLC控制器解析由风电场中央监控系统、远程互联网监测系统传达到各设备的指令，响应相关请求并执行指令，对现场设备进行调度，解决风机出现的故障，最后返回响应结果至Web浏览器客户端，完成操作请求。Step 8, the upper PC sends the request to the on-site PLC controller through the Profinet industrial Ethernet, and the on-site PLC controller analyzes the instructions transmitted to each device by the wind farm central monitoring system and the remote Internet monitoring system, and responds to relevant requests And execute the command, schedule the on-site equipment, solve the fault of the fan, and finally return the response result to the web browser client to complete the operation request.
在上述风电场SCADA系统的结构基础上，实施采用本发明中的加密型Profinet工业以太网实现对现场数据的实时、安全传输。如图2所示本发明中的加密型Profinet工业以太网传输的数据帧结构示意图。On the basis of the structure of the SCADA system of the above-mentioned wind farm, the encrypted Profinet industrial Ethernet in the present invention is implemented to realize real-time and safe transmission of on-site data. Figure 2 shows a schematic diagram of the data frame structure of the encrypted Profinet industrial Ethernet transmission in the present invention.
所述PLC控制器将采集到的数据通过Profinet工业以太网进行传输。在接收端，由Profinet工业以太网与帧类型标识符相结合，对传输的数据帧进行识别。帧内有密码标识，与数据库服务器内信息对比，可确保帧在传输过程中有固定的安全认证机制。所述DES算法加密是随机字符产生随机密钥，所述密钥通过数据帧发送到所述Profinet接收器并进行解密。根据帧内的PLC编号和控制器类型标识，与数据库服务器内信息对比，确定接收到的数据是对应编号的PLC控制器实时采集上传的数据，并进行分类。所述上位机确认接收数据有效后，通过SCADA组态系统进行实时监控。The PLC controller transmits the collected data through the Profinet industrial Ethernet. At the receiving end, the transmitted data frame is identified by combining the Profinet Industrial Ethernet with the frame type identifier. There is a password identification in the frame, and compared with the information in the database server, it can ensure that the frame has a fixed security authentication mechanism during transmission. The encryption of the DES algorithm is that random characters generate a random key, and the key is sent to the Profinet receiver through a data frame for decryption. According to the PLC number and controller type identification in the frame, compared with the information in the database server, it is determined that the received data is the data collected and uploaded by the PLC controller of the corresponding number in real time, and classified. After the upper computer confirms that the received data is valid, real-time monitoring is carried out through the SCADA configuration system.
图2、图3展示了所述上位PC机与底层PLC之间的实时数据通过加密型Profinet工业以太网实时传输过程。用户代理客户端程序启动后，首先向数据库服务器发送注册信息，注册的主要内容包括该客户端的用户名、密码、IP地址、监听端口号等信息，数据库服务器记录这些信息，形成注册信息表。注册成功后，系统启动监听线程，实时监听端口接收到的数据包，通过相关接口解析判断。具体包括以下步骤：Fig. 2 and Fig. 3 show the real-time data transmission process between the upper PC and the bottom PLC through encrypted Profinet industrial Ethernet. After the user agent client program is started, it first sends registration information to the database server. The main content of the registration includes information such as the user name, password, IP address, and listening port number of the client. The database server records these information to form a registration information table. After the registration is successful, the system starts the monitoring thread, monitors the data packets received by the port in real time, and analyzes and judges through the relevant interface. Specifically include the following steps:
步骤101，所述上位PC机接收器接收数据包，执行注册鉴权步骤，所述底层PLC发送器向所述上位PC机接收器发起INVITE注册请求；Step 101, the upper PC receiver receives the data packet, and performs a registration authentication step, and the bottom PLC transmitter initiates an INVITE registration request to the upper PC receiver;
步骤102，根据数据库服务器的注册信息表判断，若用户名、密码正确，则确认INVITE消息响应，建立通信，否则拒绝接收数据包；Step 102, judging according to the registration information table of the database server, if the user name and the password are correct, then confirm the INVITE message response, establish communication, otherwise refuse to receive the data packet;
步骤103，所述底层PLC发送器向所述上位PC机发起密钥加密过程；Step 103, the underlying PLC transmitter initiates a key encryption process to the upper PC;
步骤104，所述底层PLC发送器向所述上位PC机发送随机密钥；Step 104, the bottom PLC sender sends a random key to the upper PC;
步骤105，所述上位PC机接收器提取密钥，使用密钥解密数据包中的实时RT/IRT数据，然后传至所述数据库服务器，进行匹配；Step 105, the host PC receiver extracts the key, uses the key to decrypt the real-time RT/IRT data in the data packet, and then transmits it to the database server for matching;
步骤106，若数据在所述数据库服务器内匹配成功，所述数据库服务器将匹配结果返回至所述上位PC机接收器，确认具体信息；例如，PLC编号001代表PLC控制器1，002代表PLC控制器2，依次区分开不同编号的PLC控制器；PLC控制器类型01代表微型机，02代表小型机，03代表中型机，04代表大型机，05代表超大型机。数据匹配方便了后期对系统PLC控制器的扩容，进行深入改造；Step 106, if the data is successfully matched in the database server, the database server returns the matching result to the host PC receiver to confirm the specific information; for example, PLC number 001 represents PLC controller 1, and 002 represents PLC control 2, to distinguish PLC controllers with different numbers in turn; PLC controller type 01 represents a microcomputer, 02 represents a small computer, 03 represents a medium-sized computer, 04 represents a large-scale computer, and 05 represents a super-large computer. Data matching facilitates the expansion of the PLC controller of the system in the later stage, and carries out in-depth transformation;
步骤107，所述上位PC机将匹配成功信息反馈至所述底层PLC发送器，继续进行下一数据包的传输；Step 107, the upper PC feeds back matching success information to the underlying PLC transmitter, and continues to transmit the next data packet;
循环执行上述过程，所述上位PC机接收器接收数据包，传至组态软件客户端实时显示。The above-mentioned process is executed cyclically, and the receiver of the host PC receives the data packet, and transmits it to the configuration software client for real-time display.
在通信过程中数据传输采用注册密码登录和DES算法加密技术，可实现系统对实时数据的安全传输，防止入侵者蓄意破坏风电场的正常工况，达到了安全可靠的目的，有效的改善了风电场数据传输的安全性问题。In the process of communication, data transmission adopts registration password login and DES algorithm encryption technology, which can realize the safe transmission of real-time data by the system, prevent intruders from deliberately destroying the normal working conditions of the wind farm, achieve the purpose of safety and reliability, and effectively improve wind power. Security issues of field data transmission.
所述加密型Profinet通讯模式的智能风电场SCADA系统采用了B/S和C/S相结合的架构开发模式，区别于传统的单一B/S或C/S架构模式，所述系统不仅能通过C/S模式实现对本地风电场的监控，而且能通过B/S模式在异地情况下远程实现对所述风电场的监控。有效的改善了系统架构适应性差的问题。使得系统监控不再局限于本地监控，解决了监控距离的问题，而且还解决了远程监控中存在的速度慢、可靠性不高及实时性也不如本地监控高等问题。异地的管理和操作人员使用B/S模式监控风电场，在远程客户端通过所述Web浏览器查看风机运行参数值，实现对风机的管理和操作。本地的管理和操作人员则通过使用C/S模式对风电系统监控和管理。实现了局域网实时监控和远程互联网在线监控结合的双重监控，充分使风电企业实现风电场的“集中控制，少人值守”，大大减少运维成本，提高管理效率。The intelligent wind farm SCADA system in the encrypted Profinet communication mode adopts the architecture development mode combining B/S and C/S, which is different from the traditional single B/S or C/S architecture mode. The system can not only pass The C/S mode realizes the monitoring of the local wind farm, and the remote monitoring of the wind farm can be realized in different places through the B/S mode. Effectively improve the poor adaptability of the system architecture. It makes system monitoring no longer limited to local monitoring, solves the problem of monitoring distance, and also solves the problems of slow speed, low reliability and real-time performance in remote monitoring that are not as high as local monitoring. The management and operation personnel in different places use the B/S mode to monitor the wind farm, and view the operating parameter values of the wind turbine through the web browser on the remote client to realize the management and operation of the wind turbine. Local management and operators use the C/S mode to monitor and manage the wind power system. Realized the dual monitoring of the combination of local area network real-time monitoring and remote Internet online monitoring, fully enabling wind power enterprises to realize "centralized control of wind farms with fewer people on duty", greatly reducing operation and maintenance costs and improving management efficiency.
综上所述，以上仅为本发明的较佳实施例，各个结构、设置位置及通讯方式都是可以有所变化的，在本发明技术方案的基础上，对个别部件进行的改造和等同变换，不应排除在本发明的保护范围之外。In summary, the above are only preferred embodiments of the present invention, and various structures, installation locations and communication methods can be changed. On the basis of the technical solution of the present invention, the transformation and equivalent transformation of individual components , should not be excluded from the protection scope of the present invention.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710956575.4ACN107479524A (en) | 2017-10-09 | 2017-10-09 | A kind of Intelligent wind power field SCADA system of ciphering type Profinet communication modes |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710956575.4ACN107479524A (en) | 2017-10-09 | 2017-10-09 | A kind of Intelligent wind power field SCADA system of ciphering type Profinet communication modes |
| Publication Number | Publication Date |
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| CN107479524Atrue CN107479524A (en) | 2017-12-15 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710956575.4APendingCN107479524A (en) | 2017-10-09 | 2017-10-09 | A kind of Intelligent wind power field SCADA system of ciphering type Profinet communication modes |
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| Date | Code | Title | Description |
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| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication | Application publication date:20171215 | |
| WD01 | Invention patent application deemed withdrawn after publication |