技术领域technical field
本发明属于电力系统及其自动化技术领域，更准确地说本发明涉及一种基于同步数字体系设备告警信号的稳控策略自动切换方法。The invention belongs to the technical field of electric power systems and automation thereof. More precisely, the invention relates to an automatic switching method of a stability control strategy based on an alarm signal of a synchronous digital system device.
背景技术Background technique
区域稳定控制系统（即区域安控系统）中站间一般采用光纤进行通信，A站与B站典型的站间通信模式为：A站稳控装置<-->2M复用通信接口设备<-->A站的同步数字体系（Synchronous Digital Hierarchy，以下简称 SDH）设备<----光纤----->B站的SDH设备<-->2M复用通信接口设备<-->B站稳控装置。即稳控装置将通过2M复用通信接口设备与SDH设备进行通信，SDH设备通过光纤将光信号传输到对侧的SDH设备，然后由对侧的 2M复用通信接口设备将信息传送至对侧的稳控装置。In the regional stability control system (that is, the regional security control system), optical fiber is generally used for communication between stations. The typical inter-station communication mode between station A and station B is: station A stability control device<-->2M multiplexed communication interface equipment<- -> The synchronous digital system of station A (Synchronous DigitalHierarchy, hereinafter referred to as SDH) equipment <----optical fiber -----> SDH equipment of station B <--> 2M multiplexing communication interface equipment <--> stability control device of station B. That is, the stability control device will communicate with the SDH equipment through the 2M multiplexing communication interface equipment, and the SDH equipment transmits the optical signal to the SDH equipment on the opposite side through the optical fiber, and then the 2M multiplexing communication interface equipment on the opposite side transmits the information to the opposite side stability control device.
目前区域安控系统的控制策略均不考虑通信失效的情况，当通道出现异常时调度会下令停运与通信异常相关的稳控装置，但是在发现通信异常到停运稳控装置之间的这段时间内若发生有控制措施的电网故障，则控制措施可能因通信异常而不能可靠地执行，从而导致系统失稳。稳控装置通常仅检测帧头帧尾和校验和来判断通道是否异常，判断通信是否异常的标准为连续一段时间（如5秒）收不到信号，这样的判断标准仅能检测出通道中断之类的严重故障，而对于毫秒级的非连续性通信中断或误码则无法检测。事实上，电网安全稳定自动装置技术规范中明确规定了复用光纤通道误码率应小于10-8，控制主站发出的控制命令经多级通道传输到最后一级执行站装置的总延时对于光纤通道不超过20ms等通信性能指标。此外还有其它技术规定对误码劣化分、严重误码秒、误码秒和残余误码率等指标进行了详细的描述。At present, the control strategy of the regional security control system does not consider the communication failure situation. When the channel is abnormal, the dispatcher will order the outage of the stability control device related to the communication anomaly. If a power grid failure with control measures occurs within a period of time, the control measures may not be reliably implemented due to abnormal communication, resulting in system instability. The stability control device usually only detects the frame header and frame tail and checksum to judge whether the channel is abnormal. The standard for judging whether the communication is abnormal is that no signal can be received for a continuous period of time (such as 5 seconds). Such a judgment standard can only detect channel interruption Serious failures such as , but for millisecond-level non-continuous communication interruptions or bit errors cannot be detected. As a matter of fact, the technical specifications of the automatic device for safety and stability of the power grid clearly stipulate that the bit error rate of the multiplexed optical fiber channel should be less than 10-8 , and the total delay of the control command sent by the control master station to the final execution station device through multi-level channels For communication performance indicators such as fiber channel not exceeding 20ms. In addition, there are other technical regulations that describe in detail indicators such as bit error degradation score, severely errored second, bit errored second, and residual bit error rate.
目前的稳定控制装置判断通信异常时都没有考虑这些相关的性能指标，而对SDH设备的告警信号进行组合则可获取这些性能指标。因此本发明考虑将SDH设备的告警信号接入到稳定控制装置的2M复用接口设备中用于动态监测通道的性能，由此区域稳控系统的主站可综合根据系统的通道状态来实施控制策略的自动切换。The current stability control device does not consider these related performance indicators when judging the abnormality of communication, but these performance indicators can be obtained by combining the alarm signals of SDH equipment. Therefore, the present invention considers that the alarm signal of the SDH equipment is connected to the 2M multiplexing interface equipment of the stability control device for dynamic monitoring of channel performance, so that the master station of the regional stability control system can comprehensively implement control according to the channel status of the system Automatic switching of strategies.
发明内容Contents of the invention
本发明的目的是：克服现有技术中区域稳定控制系统出现通信异常时部分控制措施可能无法执行的缺陷，提供一种根据同步数字体系（SDH）设备的告警信号实时判断通道的运行状态并自动切换系统稳控策略的方法。The purpose of the present invention is to overcome the defect that some control measures may not be executed when the regional stability control system has abnormal communication in the prior art, and provide a real-time judgment of the operating status of the channel according to the alarm signal of the Synchronous Digital Hierarchy (SDH) device and automatically The method of switching the system stability control strategy.
具体地说，本发明是采用以下的技术方案来实现的，包括下列步骤：Specifically, the present invention is realized by adopting the following technical solutions, including the following steps:
1）根据目标电网的特点和预想事故集，基于电网安全稳定运行的要求进行稳定计算，确定目标电网的稳定控制策略，称之为控制策略A；1) According to the characteristics of the target power grid and the expected accident set, the stability calculation is carried out based on the requirements of safe and stable operation of the power grid, and the stability control strategy of the target power grid is determined, which is called control strategy A;
2）分析目标电网内电力通信网同步数字体系设备和光纤通道的路由条件，考虑电网的稳定控制措施和安稳业务的对通道的要求确定关键通道组；2) Analyze the routing conditions of the synchronous digital system equipment and optical fiber channel of the power communication network in the target power grid, and determine the key channel group considering the stability control measures of the power grid and the channel requirements for stable business;
3）对目标电网在关键通道失效条件下进行时域仿真，确定关键通道失效后的稳定控制策略，称之为控制策略B；3) Carry out time-domain simulation of the target power grid under the condition of critical channel failure, and determine the stable control strategy after the critical channel fails, which is called control strategy B;
4）将同步数字体系设备的告警信息接入区域安控系统的稳控装置，同时将目标电网的控制策略A和控制策略B存入策略表中，稳控装置初始化时默认采用控制策略A；4) Connect the alarm information of the synchronous digital system equipment to the stability control device of the regional security control system, and store the control strategy A and control strategy B of the target power grid into the strategy table. The control strategy A is adopted by default when the stability control device is initialized;
5）稳控装置根据同步数字体系设备的告警信号和稳控业务对不同类型传输通道的要求实时判断通道是否满足时延、误码和中断的要求，同时将通道状态信息上送至上级控制厂站，若通道有异常则转入步骤6），否则转入步骤7）；5) The stability control device judges in real time whether the channel meets the requirements of delay, bit error and interruption according to the alarm signal of the synchronous digital system equipment and the requirements of the stability control business for different types of transmission channels, and at the same time sends the channel status information to the superior control plant station, if there is an abnormality in the channel, go to step 6); otherwise, go to step 7);
6）区域安控系统控制主站根据系统的通道状态信息判断是否需要进行控制策略的切换：当所有控制子站与控制主站通信均失效时，则区域安控系统立刻退出运行，当控制主站仅与部分控制子站通信失效时，则置控制策略待切换标志；当控制子站与执行站之间的通道部分失效时，则也置控制策略待切换标志；当控制子站与执行站之间的通道全部失效时，则区域安控系统立刻退出运行；6) The control master station of the regional security control system judges whether it is necessary to switch the control strategy according to the channel state information of the system: when all the communication between the control sub-stations and the control master station fails, the regional security control system immediately exits the operation, and when the control master When the communication between the sub-station and only part of the control sub-station fails, the flag of control strategy to be switched is set; When all the passages between are invalid, the area security control system will exit the operation immediately;
7）区域安控系统控制主站根据实时的通道状态、运行方式和装置是否闭锁条件判断是否需要转变控制策略，若有控制策略待切换标志，则控制主站自动搜索与当前通道状态和运行方式相匹配的控制策略B，并将当前的控制策略A转向控制策略B，若搜索不到相匹配的控制策略，则将当前控制策略转向控制策略A；若无控制策略待切换标志，则直接将当前控制策略转向控制策略A；最后将控制策略转换命令发送至相关的控制子站和执行站；7) The regional security control system controls the master station to judge whether the control strategy needs to be changed according to the real-time channel status, operation mode and whether the device is blocked. If there is a control strategy to be switched flag, the control master station automatically searches for the current channel status and operation mode matching control strategy B, and switch the current control strategy A to control strategy B, if no matching control strategy can be found, then switch the current control strategy to control strategy A; if there is no control strategy to be switched flag, directly transfer The current control strategy turns to control strategy A; finally, the control strategy conversion command is sent to the relevant control sub-station and execution station;
8）区域安控系统检测电网是否发生策略表中的预想故障，若检测到有故障发生，则稳控装置根据运行方式、故障类型和通道状态进行传统控制策略的搜索和实施然后转向步骤5），若电网没有发生故障则直接转向步骤5）进行下一轮的通信及电网故障检测和控制策略的搜索与执行。8) The regional security control system detects whether the expected fault in the strategy table occurs in the power grid. If a fault is detected, the stability control device searches and implements the traditional control strategy according to the operation mode, fault type and channel status, and then turns to step 5) , if there is no fault in the grid, go directly to step 5) for the next round of communication and grid fault detection and control strategy search and execution.
本发明的有益效果如下：本发明采集了SDH设备的告警信息用于区域安控系统通道状态的实时检测，可用于通道失效条件下控制策略的快速切换，避免了通道失效后部分稳控策略的控制措施可能无法可靠执行的缺陷，从本质上提高了区域安控系统的可靠性。本发明稳控装置基于SDH设备的告警信息可在几毫秒内快速检测通道的动态实时信息，而稳控装置传统检测通道失效的时间一般需要5秒左右。The beneficial effects of the present invention are as follows: the present invention collects the alarm information of the SDH equipment for the real-time detection of the channel state of the regional security control system, can be used for the rapid switching of the control strategy under the channel failure condition, and avoids the failure of the partial stability control strategy after the channel failure Deficiencies in which controls may not be reliably enforced inherently increase the reliability of the area security control system. The stability control device of the present invention can quickly detect the dynamic real-time information of the channel within a few milliseconds based on the alarm information of the SDH equipment, while the traditional detection channel failure time of the stability control device generally takes about 5 seconds.
附图说明Description of drawings
图1为本发明方法的流程图一。Fig. 1 is a flowchart one of the method of the present invention.
图2为本发明方法的流程图二。Fig. 2 is the second flow chart of the method of the present invention.
具体实施方式detailed description
下面参照附图并结合实例对本发明作进一步详细描述。The present invention will be described in further detail below with reference to the accompanying drawings and examples.
图1和图2是本发明方法的流程图。图1中步骤1）根据目标电网的特点和预想事故集，基于电网安全稳定运行的要求进行稳定计算，确定目标电网的稳定控制策略，称之为控制策略A。1 and 2 are flow charts of the method of the present invention. Step 1 in Figure 1) According to the characteristics of the target power grid and the expected accident set, the stability calculation is performed based on the requirements of safe and stable operation of the power grid, and the stability control strategy of the target power grid is determined, which is called control strategy A.
图1中步骤2）分析目标电网内电力通信网同步数字体系设备和光纤通道的路由条件，考虑电网的稳定控制措施和安稳业务的对通道的要求确定关键通道组。Step 2 in Figure 1) Analyze the routing conditions of the synchronous digital system equipment and optical fiber channel of the power communication network in the target power grid, and determine the key channel group considering the stability control measures of the power grid and the channel requirements of the stable business.
图1中步骤3）对目标电网在关键通道失效条件下进行时域仿真，确定关键通道失效后的稳定控制策略，称之为控制策略B。Step 3 in Figure 1) Carry out time-domain simulation of the target power grid under the condition of critical channel failure, and determine the stability control strategy after the critical channel fails, which is called control strategy B.
图1中步骤4）将同步数字体系设备的告警信息接入区域安控系统的稳控装置，同时将目标电网的控制策略A和控制策略B存入策略表中，稳控装置初始化时默认采用控制策略A。Step 4 in Figure 1) Connect the alarm information of the synchronous digital system equipment to the stability control device of the regional security control system, and at the same time store the control strategy A and control strategy B of the target power grid into the strategy table, which is used by default when the stability control device is initialized control strategy A.
图2中步骤5）稳控装置根据同步数字体系设备的告警信号和稳控业务对不同类型传输通道的要求实时判断通道是否满足时延、误码和中断的要求，同时将通道状态信息上送至上级控制厂站（执行站上送至控制子站，控制子站上送至控制主站），若通道有异常则转入步骤6），否则转入步骤7）。Step 5 in Figure 2) The stability control device judges in real time whether the channel meets the requirements of delay, bit error and interruption according to the alarm signal of the synchronous digital system equipment and the requirements of the stability control service for different types of transmission channels, and at the same time sends the channel status information to To the superior control station (the execution station sends it to the control sub-station, and the control sub-station sends it to the control master station). If there is an abnormality in the channel, go to step 6), otherwise go to step 7).
图2中步骤6）区域安控系统控制主站根据系统的通道状态信息判断是否需要进行控制策略的切换：当所有控制子站与控制主站通信均失效时，则区域安控系统立刻退出运行，当控制主站仅与部分控制子站通信失效时，则置控制策略待切换标志；当控制子站与执行站之间的通道部分失效时，则也置控制策略待切换标志；当控制子站与执行站之间的通道全部失效时，则区域安控系统立刻退出运行。Step 6 in Figure 2) The control master station of the regional security control system judges whether it is necessary to switch the control strategy according to the channel status information of the system: when all the communication between the control sub-stations and the control master station fails, the regional security control system immediately exits the operation , when the communication between the control master station and only part of the control sub-stations fails, the flag of control strategy to be switched is set; When all the passages between the station and the execution station fail, the area security control system will immediately exit the operation.
图1中步骤7）区域安控系统控制主站根据实时的通道状态、运行方式和装置是否闭锁条件判断是否需要转变控制策略，若有控制策略待切换标志，则控制主站自动搜索与当前通道状态和运行方式相匹配的控制策略B，并将当前的控制策略A转向控制策略B，若搜索不到相匹配的控制策略，则将当前控制策略转向控制策略A；若无控制策略待切换标志，则直接将当前控制策略转向控制策略A；最后将控制策略转换命令发送至相关的控制子站和执行站。Step 7 in Figure 1) The regional security control system controls the master station to judge whether it is necessary to change the control strategy according to the real-time channel status, operation mode and whether the device is blocked. Control strategy B that matches the status and operation mode, and switch the current control strategy A to control strategy B. If no matching control strategy can be found, switch the current control strategy to control strategy A; if there is no control strategy to be switched flag , the current control strategy is directly transferred to control strategy A; finally, the control strategy conversion command is sent to the relevant control sub-station and execution station.
图1中步骤8）区域安控系统检测电网是否发生策略表中的预想故障，若检测到有故障发生，则稳控装置根据运行方式、故障类型和通道状态进行传统控制策略的搜索和实施然后转向步骤5），若电网没有发生故障则直接转向步骤5）进行下一轮的通信及电网故障检测和控制策略的搜索与执行。Step 8 in Figure 1) The regional security control system detects whether the expected fault in the strategy table occurs in the power grid. If a fault is detected, the stability control device searches and implements the traditional control strategy according to the operation mode, fault type and channel status, and then Turn to step 5), if there is no fault in the power grid, then go directly to step 5) for the next round of communication and power grid fault detection and control strategy search and execution.
虽然本发明已以较佳实施例公开如上，但实施例并不是用来限定本发明的。在不脱离本发明之精神和范围内，所做的任何等效变化或润饰，同样属于本发明之保护范围。因此本发明的保护范围应当以本申请的权利要求所界定的内容为标准。Although the present invention has been disclosed above with preferred embodiments, the embodiments are not intended to limit the present invention. Any equivalent changes or modifications made without departing from the spirit and scope of the present invention also belong to the protection scope of the present invention. Therefore, the scope of protection of the present invention should be based on the content defined by the claims of this application.
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| CN201310518764.5ACN103532794B (en) | 2013-10-29 | 2013-10-29 | Method for automatically switching stable control strategies based on warning signals of synchronous digital hierarchy equipment |
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| CN201310518764.5ACN103532794B (en) | 2013-10-29 | 2013-10-29 | Method for automatically switching stable control strategies based on warning signals of synchronous digital hierarchy equipment |
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| CN201310518764.5AActiveCN103532794B (en) | 2013-10-29 | 2013-10-29 | Method for automatically switching stable control strategies based on warning signals of synchronous digital hierarchy equipment |
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