技术领域technical field
本发明涉及微电网能量管理技术、分布式电源控制方法和顺序控制技术，具体涉及一种顺序控制在微电网能量管理系统中的应用方法及装置。The invention relates to a micro-grid energy management technology, a distributed power source control method and a sequence control technology, in particular to an application method and device for sequence control in a micro-grid energy management system.
背景技术Background technique
近年来，随着经济的发展，对电力的需求越来越大，同时大量石化能源的利用对资源环境造成了严重的影响。而风能、太阳能等可再生分布式能源能够有效的解决能源和环境问题，得到迅速的推广应用。微电网是由分布式电源、储能装置、能量变换装置、相关负荷和监控、保护装置汇集而成的小型分布式发电系统，是一个能够实现自我控制、保护和管理的自治系统，既可以与大电网并网运行，也可以离网运行。In recent years, with the development of the economy, the demand for electricity is increasing. At the same time, the utilization of a large amount of petrochemical energy has caused serious impacts on resources and the environment. Renewable distributed energy such as wind energy and solar energy can effectively solve energy and environmental problems, and has been rapidly popularized and applied. Microgrid is a small distributed power generation system composed of distributed power sources, energy storage devices, energy conversion devices, related loads and monitoring and protection devices. It is an autonomous system that can realize self-control, protection and management. Large power grids can be connected to the grid or run off-grid.
为了充分发挥微电网对分布式电源、储能装置以及相关负荷的管理能力，有效提高微电网安全、稳定、经济运行水平，微电网能量管理系统成为必不可少的有效手段。然而由于微电网内部采用的来自各个厂家的分布式电源种类繁多，且分布式电源的运行控制并不成熟，控制流程和控制方法并没有标准的规范遵循，同时随着电动汽车充放电设施的大量接入、智能家居的普及和需求侧响应的全面实施，使得微电网的结构更为复杂、多变，管理控制难度不断加大，微电网能量管理系统对于不同应用场景的适应性也越来越差。这些因素对微电网的能量管理系统提出了更高的要求。In order to give full play to the management capabilities of the micro-grid on distributed power sources, energy storage devices and related loads, and effectively improve the safety, stability and economic operation level of the micro-grid, the energy management system of the micro-grid has become an indispensable and effective means. However, due to the wide variety of distributed power sources from various manufacturers used in the microgrid, and the operation control of distributed power sources is not mature, there is no standard specification for the control process and control methods, and with the large number of electric vehicle charging and discharging facilities Access, the popularization of smart home and the full implementation of demand-side response make the structure of the micro-grid more complex and changeable, and the difficulty of management and control continues to increase. The micro-grid energy management system is also more and more adaptable to different application scenarios. Difference. These factors put forward higher requirements for the energy management system of the microgrid.
现有技术中的微电网能量管理系统均为固定操作流程的微电网能量管理系统，此系统是能量管理高级应用通过能量管理算法得到控制策略后，直接调用SCADA的遥控、遥调功能实现策略，如下图1所示。该系统的操作流程固定，对于不同应用场景的适应性较差。The micro-grid energy management systems in the prior art are all micro-grid energy management systems with fixed operating procedures. This system implements the strategy by directly calling the remote control and remote adjustment functions of SCADA after the advanced application of energy management obtains the control strategy through the energy management algorithm. As shown in Figure 1 below. The operating procedure of the system is fixed, and the adaptability to different application scenarios is poor.
顺序控制功能作为智能变电站的基本系统功能之一，是指通过自动化系统的单个操作命令，根据预先规定的操作顺序和闭锁逻辑，自动按规则完成一系列断路器和隔离开关的操作，从而最终改变系统运行状态的过程，实现变电站电气设备从运行、热备用、冷备用、检修等各种状态的自动转换，是一种按时间顺序或逻辑顺序进行控制的开环制方式。这种顺序控制的操作方式，可以使操作人员从大量操作项目多，持续时间长、劳动强度大、操作风险高的工作中脱离出来，既有利于电网的安全运行，也减少了误操作的可能。As one of the basic system functions of the smart substation, the sequence control function refers to a single operation command of the automation system, according to the pre-specified operation sequence and locking logic, automatically completes a series of circuit breaker and isolating switch operations according to the rules, and finally changes The process of system running status realizes the automatic conversion of substation electrical equipment from running, hot standby, cold standby, maintenance and other states. It is an open-loop method controlled by time sequence or logical sequence. This sequential control operation mode can free the operator from the work with a large number of operation items, long duration, high labor intensity and high operation risk, which is not only conducive to the safe operation of the power grid, but also reduces the possibility of misoperation .
发明内容Contents of the invention
本发明提供了顺序控制在微电网能量管理系统中的应用方法及装置，以提高微电网能量管理系统的适应性和兼容性，降低操作人员的劳动强度和操作风险。The invention provides an application method and device of sequence control in a micro-grid energy management system, so as to improve the adaptability and compatibility of the micro-grid energy management system, and reduce the labor intensity and operation risks of operators.
为达到上述目的，本发明的顺序控制在微电网能量管理系统中的应用方法包括：In order to achieve the above purpose, the application method of the sequence control in the microgrid energy management system of the present invention includes:
1)根据不同项目的需求及微电网系统设备信息，制定顺序控制计划，所述顺序控制计划包括顺序控制计划ID、启动条件及顺序控制项，所述启动条件为顺序控制启动所要满足的条件，所述顺序控制项用于配置顺序控制每一步的流程操作；1) According to the needs of different projects and the equipment information of the microgrid system, formulate a sequence control plan, the sequence control plan includes the sequence control plan ID, start conditions and sequence control items, the start conditions are the conditions to be met when the sequence control starts, The sequence control item is used to configure the process operation of each step of sequence control;
2)通过配置工具预先将顺序控制计划配置到微电网能量管理系统相应的自动控制流程中；2) Pre-configure the sequential control plan into the corresponding automatic control process of the microgrid energy management system through the configuration tool;
3)系统投入运行后，微电网能量管理系统根据配置的顺序控制计划及SCADA系统的遥测、遥信信息执行顺序控制。3) After the system is put into operation, the microgrid energy management system executes sequence control according to the configured sequence control plan and the telemetry and remote signaling information of the SCADA system.
所述顺序控制项包括顺序控制每一步的启动条件、遥控ID、遥调ID、控制类型、失败后的控制步骤及控制结束后等待时间。The sequence control item includes the starting condition of each step of sequence control, remote control ID, remote adjustment ID, control type, control step after failure and waiting time after control ends.
所述启动条件包括配置遥测ID的值的上下限或配置遥信ID的状态的数学关系组合。The start condition includes the upper and lower limits of the value of the configuration telemetry ID or a mathematical relationship combination of the states of the configuration telemetry ID.
顺序控制的执行过程为：The execution process of sequence control is:
A)判断顺序控制的启动条件是否满足，满足启动条件，按照该顺序控制计划中的遥控ID和控制类型，通过SCADA系统下发控制并判断控制结果，当满足启动条件或控制返回结果失败，执行失败后的控制步骤；A) Judging whether the starting conditions of the sequence control are met, and if the starting conditions are met, according to the remote control ID and control type in the sequence control plan, the control is issued through the SCADA system and the control result is judged. When the starting conditions are met or the control returns a result failure, execute Control steps after failure;
B)顺序控制执行成功，按照控制结束后等待时间进行等待，等待时间结束后执行下一个顺序控制。B) The sequence control is executed successfully, and waits according to the waiting time after the control ends, and executes the next sequence control after the waiting time ends.
对于顺序控制中的非关键步骤，失败后的控制步骤设置为继续执行。For non-critical steps in sequence control, the control step after failure is set to continue execution.
对于顺序控制中的关键步骤，增加人工确认操作。For key steps in sequence control, manual confirmation operations are added.
步骤1)中的项目为黑启动控制，所述黑启动的顺序控制计划为：The item in step 1) is black start control, and the sequence control plan of described black start is:
a)启动条件为：系统母线频率和电压遥测为0；a) The starting condition is: the system bus frequency and voltage telemetry are 0;
b)当微电网系统中可控的负荷和分布式电源的总个数为N时，前N个步骤配置为切除负荷和分布式电源；b) When the total number of controllable loads and distributed power sources in the microgrid system is N, the first N steps are configured as load shedding and distributed power sources;
第N+1步，根据项目实际情况配置主电源的启动操作；Step N+1, configure the start-up operation of the main power supply according to the actual situation of the project;
第N+2步起配置为网架恢复操作，根据项目实际设计顺序配置系统中M个网架开关的恢复操作顺序；From step N+2, it is configured as grid recovery operation, and the recovery operation sequence of M grid switches in the system is configured according to the actual design sequence of the project;
第N+M+1步起配置投入负荷与分布式发电装置的步骤。Step N+M+1 starts with the step of configuring input load and distributed generation device.
本发明的顺序控制在微电网能量管理系统中的应用装置与SCADA系统通信连接进行数据交互，该装置包括顺序控制计划制定模块及顺序控制计划配置模块，所述顺序控制计划制定模块用于根据不同项目的需求及微电网系统设备信息，制定顺序控制计划，所述顺序控制计划包括顺序控制计划ID、启动条件及顺序控制项，所述启动条件为顺序控制启动所要满足的条件，所述顺序控制项用于配置顺序控制每一步的流程操作；The application device of the sequence control in the microgrid energy management system of the present invention communicates with the SCADA system for data interaction. The device includes a sequence control plan formulation module and a sequence control plan configuration module. The sequence control plan formulation module is used for different According to the requirements of the project and the equipment information of the microgrid system, a sequence control plan is formulated. The sequence control plan includes the sequence control plan ID, start conditions and sequence control items. The start conditions are the conditions to be met when the sequence control is started. The item is used to configure the sequence to control the process operation of each step;
所述顺序控制计划配置模块用于通过配置工具预先将顺序控制计划配置到微电网能量管理系统相应的自动控制流程中。The sequential control plan configuration module is used to pre-configure the sequential control plan into the corresponding automatic control process of the microgrid energy management system through a configuration tool.
该装置位于微电网能量管理系统外部，与微电网能量管理系统通信连接进行数据交互。The device is located outside the microgrid energy management system, and communicates with the microgrid energy management system for data interaction.
该装置配置在微电网能量管理系统内部。The device is configured inside the microgrid energy management system.
本发明的有益效果是：本发明将顺序控制引入微电网能量管理系统的自动控制流程中，用顺序控制来封装微电网能量管理系统与设备的交互，可以将微电网能量管理高级应用与项目中实际设备的操作隔离开来，屏蔽了不同厂家、不同控制方法、不同控制流程给微电网能量管理系统带来的大量不兼容、二次开发的问题。根据具体项目设备的实际情况，通过配置来决定操作的对象和顺序，从而解决了固定操作流程的能量管理系统同现场设备实际操作流程的不兼容问题，提高系统的适应性。采用顺序控制的操作方式，可以使操作人员从大量操作项目多，持续时间长、劳动强度大、操作风险高的工作中脱离出来，既有利于电网的安全运行，也减少了误操作的可能。The beneficial effects of the present invention are: the present invention introduces sequence control into the automatic control process of the microgrid energy management system, uses sequence control to encapsulate the interaction between the microgrid energy management system and equipment, and can integrate advanced applications of microgrid energy management with projects The operation of the actual equipment is isolated, which shields a large number of incompatibility and secondary development problems brought about by different manufacturers, different control methods, and different control processes to the microgrid energy management system. According to the actual situation of specific project equipment, the object and sequence of operation are determined through configuration, thus solving the incompatibility between the energy management system with fixed operation process and the actual operation process of field equipment, and improving the adaptability of the system. The operation mode of sequential control can free the operator from the work with a large number of operation items, long duration, high labor intensity and high operation risk, which is not only conducive to the safe operation of the power grid, but also reduces the possibility of misoperation.
本发明通过对顺序控制技术进行改进，将下一顺控项的启动条件配置成上个顺控项控制结果对微电网系统状态的判断，实现微电网能量管理的闭环控制，实现长时间、复杂逻辑的微电网能量管理控制策略；应用在微电网能量管理的高级自动策略的功能模块中，使微电网的能量管理策略更加灵活，以适应更加复杂、多变的结构和管理控制策略。根据不同项目需求和不同厂家的设备操作方法基于可配置的顺序控制来实现定制设计，而不用进行二次的开发，节约了开发的成本和周期，减少了系统维护的难度。The invention improves the sequence control technology, and configures the starting condition of the next sequence control item as the judgment of the state of the microgrid system by the control result of the previous sequence control item, so as to realize the closed-loop control of the energy management of the microgrid, and realize long-term and complex Logical microgrid energy management control strategy; applied in the functional module of the advanced automatic strategy of microgrid energy management, making the energy management strategy of microgrid more flexible to adapt to more complex and changeable structures and management control strategies. According to different project requirements and equipment operation methods of different manufacturers, the customized design can be realized based on configurable sequence control, without secondary development, which saves the cost and cycle of development, and reduces the difficulty of system maintenance.
附图说明Description of drawings
图1是固定操作流程的微电网能量管理系统结构图；Figure 1 is a structural diagram of a microgrid energy management system with a fixed operating process;
图2是本发明应用顺序控制的微电网能量管理系统结构图；Fig. 2 is a structural diagram of a microgrid energy management system applying sequential control in the present invention;
图3是本发明顺序控制实现闭环控制的流程图；Fig. 3 is the flow chart that sequence control of the present invention realizes closed-loop control;
图4是本发明中改进的顺序控制流程图；Fig. 4 is the sequence control flowchart of improvement among the present invention;
图5是本发明中改进顺序控制应用于离网型微电网黑启动控制流程图。Fig. 5 is a flow chart of the application of the improved sequence control in the present invention to the black start control of the off-grid microgrid.
具体实施方式Detailed ways
下面结合附图对本发明的技术方案作进一步详细说明。The technical scheme of the present invention will be described in further detail below in conjunction with the accompanying drawings.
本发明的顺序控制在微电网能量管理系统中的应用方法实施例Embodiment of the application method of the sequence control in the microgrid energy management system of the present invention
本实施例的顺序控制在微电网能量管理系统中的应用方法包括：The application method of the sequence control in this embodiment in the microgrid energy management system includes:
1)根据不同项目的需求、微电网系统设备信息及SCADA系统的遥测、遥控信息，制定顺序控制计划，所述顺序控制计划包括顺序控制计划ID、启动条件及顺序控制项，所述启动条件为顺序控制启动所要满足的条件，所述顺序控制项用于配置顺序控制每一步的流程操作；1) According to the needs of different projects, the equipment information of the microgrid system and the telemetry and remote control information of the SCADA system, a sequence control plan is formulated, and the sequence control plan includes sequence control plan ID, start conditions and sequence control items, and the start conditions are The conditions to be met for the sequence control to start, the sequence control item is used to configure the process operation of each step of the sequence control;
2)通过配置工具预先将顺序控制计划配置到微电网能量管理系统中；2) Pre-configure the sequential control plan into the microgrid energy management system through the configuration tool;
3)系统投入运行后，微电网能量管理系统根据配置的顺序控制计划通过SCADA系统执行顺序控制。3) After the system is put into operation, the microgrid energy management system executes sequence control through the SCADA system according to the configured sequence control plan.
顺序控制计划ID为微电网能量管理系统中调用顺序控制的索引，即当系统调用某顺序控制时会根据该顺序控制计划ID找到相应的顺序控制。顺序控制项用于配置顺序控制每一步的流程操作，其包括顺序控制的每一步骤的启动条件、遥控ID或遥调ID、控制类型、失败后的控制步骤及控制结束后等待时间。SCADA系统中提供的所有支持的控点及控制类型均包含在顺序控制项中。The sequence control plan ID is the index of calling the sequence control in the microgrid energy management system, that is, when the system calls a certain sequence control, it will find the corresponding sequence control according to the sequence control plan ID. The sequence control item is used to configure the process operation of each step of sequence control, which includes the start condition of each step of sequence control, remote control ID or remote adjustment ID, control type, control step after failure and waiting time after control ends. All supported control points and control types provided in the SCADA system are included in the sequence control item.
以下给出了单个顺序控制计划的控制流程，如图2所示：The control flow of a single sequential control plan is given below, as shown in Figure 2:
1)判断该顺序控制的启动条件是否满足。启动条件包括：配置遥测ID的值的上下限或配置遥信ID的状态的数学关系组合。1) Judging whether the starting condition of the sequence control is satisfied. The start conditions include: configuring the upper and lower limits of the value of the telemetry ID or a mathematical relationship combination of the state of the configuration telemetry ID.
2)若满足启动条件，则按该顺序控制项的操作遥控ID和控制类型，通过SCADA系统下发控制并判断控制结果。如不满足启动项条件，则直接执行失败后的控制步骤；2) If the starting conditions are met, then according to the operation remote control ID and control type of the sequence control item, the control is issued through the SCADA system and the control result is judged. If the condition of the startup item is not met, the control steps after the failure are directly executed;
3)不满足控制条件或控制返回结果失败，则根据配置执行失败后的控制步骤；3) If the control conditions are not met or the control returns a result that fails, then execute the control steps after the failure according to the configuration;
4)若顺控项执行成功，按照控制结束后等待时间进行等待，等待时间结束后，执行下一个顺序控制的流程；4) If the execution of the sequence control item is successful, wait according to the waiting time after the control ends, and execute the next sequence control process after the waiting time is over;
如图4所示，本实施例给出了整个顺序控制的控制流程：As shown in Figure 4, the present embodiment provides the control flow of the entire sequential control:
1)系统调用顺序控制，判断是否满足启动条件，当满足启动条件，执行步骤2)；1) The system calls sequence control to judge whether the starting condition is met, and when the starting condition is met, step 2) is executed;
2)判断是否有未执行的控制项，是的话，执行步骤3)，否则，执行步骤10)；2) Determine whether there is an unexecuted control item, if yes, perform step 3), otherwise, perform step 10);
3)判断遥控是否需要人确认，是的话，执行步骤4)，否则，执行步骤5)；3) Determine whether the remote control requires human confirmation, if yes, perform step 4), otherwise, perform step 5);
4)等待确认，判断是否进行了确认，进行了确认进入步骤5)，否则，执行步骤6)；4) Wait for confirmation, judge whether confirmation is carried out, and enter step 5) if confirmation is carried out, otherwise, perform step 6);
5)判断控制项是否满足控制条件，是的话，进入步骤7)，否则，进入步骤8)；5) Determine whether the control item satisfies the control condition, if yes, enter step 7), otherwise, enter step 8);
6)判断是否取消或超时，没有取消也没有超时，进入步骤4)，否则，进入步骤10)；6) Judging whether to cancel or overtime, if there is no cancellation or overtime, enter step 4), otherwise, enter step 10);
7)进行遥控，并判断控制是否成功，成功的话，返回步骤2)，否则，进入步骤9)；7) Carry out remote control, and judge whether the control is successful, if successful, return to step 2), otherwise, enter step 9);
8)判断是否超时，超时的话，进入步骤9)，否则，进入步骤5)；8) judge whether overtime, if overtime, enter step 9), otherwise, enter step 5);
9)判断失败后是否继续进行顺序控制操作，是的话，进入步骤2)，否则进入步骤10)；9) Whether to continue the sequential control operation after judging failure, if yes, enter step 2), otherwise enter step 10);
10)遥控结束。10) The remote control ends.
上述步骤中体现了对顺序控制的改进，具体改进内容包括：Improvements to the sequence control are reflected in the above steps, and the specific improvements include:
1)顺序控制每个控制项的启动条件判断扩展为多个遥测、计算量数学关系及遥信状态的组合。该组合能够实现复杂的系统状态描述，包括系统频率状态、电压状态，发电机工作状态、系统备用状态等。通过引入计算量数学关系，可以实现算法的自定义配置，更加提高了系统的灵活性。1) Sequential control The start-up condition judgment of each control item is extended to a combination of multiple telemetry, mathematical relationship of calculation amount and telesignaling state. This combination can realize complex system state description, including system frequency state, voltage state, generator working state, system standby state, etc. By introducing the mathematical relationship of the calculation amount, the custom configuration of the algorithm can be realized, which further improves the flexibility of the system.
2)将下一顺控项的启动条件配置成上个顺控项控制结果对微电网系统状态的判断，实现了系统控制的闭环实现。2) The start-up condition of the next sequence control item is configured as the judgment of the state of the microgrid system by the control result of the previous sequence control item, and the closed-loop realization of the system control is realized.
3)控制成功后，下一顺控项ID设置成当前顺控项，则可以实现循环控制；3) After the control is successful, the ID of the next sequence control item is set as the current sequence control item, and then loop control can be realized;
4)失败后是否继续执行配置，可以保证顺控的执行效果，非关键步骤在不影响系统安全稳定的情况下可以配置失败后继续进行；4) Whether to continue to execute the configuration after the failure can ensure the execution effect of the sequence control, and the non-critical steps can be continued after the configuration fails without affecting the safety and stability of the system;
5)关键步骤可以增加人工确认配置，即在人机交互界面弹出确认框，人工确认后该顺序控制项才可以执行，以保证微电网系统运行安全稳定。5) Manual confirmation configuration can be added to the key steps, that is, a confirmation box pops up on the human-computer interaction interface. After manual confirmation, the sequence control item can be executed to ensure the safe and stable operation of the microgrid system.
微电网系统发生异常导致整个电网停电后，需要快速制定策略并恢复系统的供电，即微电网黑启动控制。以下为微电网黑启动的一般控制流程：When an abnormality occurs in the microgrid system and the power outage of the entire power grid is caused, it is necessary to quickly formulate a strategy and restore the power supply of the system, that is, the black start control of the microgrid. The following is the general control process of microgrid black start:
1)系统故障失电(失压、失频)；1) System failure and power loss (loss of voltage, loss of frequency);
2)切除负荷、分布式电源，以减少黑启动瞬间对微电网的冲击；2) Load shedding and distributed power supply to reduce the impact on the microgrid at the moment of black start;
3)启动系统中具有自启动能力的机组，恢复微电网频率、电压支撑；3) Start the unit with self-starting capability in the system, and restore the frequency and voltage support of the microgrid;
4)逐步恢复供电网架；4) Gradually restore the power grid;
5)根据微电网系统状态逐步启动分布式电源和投入负荷，负荷全部投入或者无发电机可投入，则黑启动控制结束；5) According to the state of the microgrid system, the distributed power supply and input load are gradually started, and if all the loads are input or no generator can be input, the black start control ends;
黑启动过程中，根据不同的项目要根据不同分布式电源的发电特性、设备操作流程、响应时间及网架涉及，配置顺序控制，已实现不同的工程需求，下面结合附图5，将上述改进的顺序控制应用于微电网的黑启动控制：During the black start process, according to different projects, according to the power generation characteristics of different distributed power sources, equipment operation procedures, response time, and network frame involvement, configuration sequence control has achieved different engineering requirements. The above improvements are made in conjunction with Figure 5 below The sequence control is applied to the black start control of the microgrid:
1)系统母线频率、电压遥测为0作为黑启动顺控的启动条件；1) The system bus frequency and voltage telemetry are 0 as the start condition of the black start sequence control;
2)设微电网系统中可控的负荷和分布式电源的总个数为N，顺序控制的前N个步骤配置切除负荷和分布式电源的操作；2) Assuming that the total number of controllable loads and distributed power sources in the microgrid system is N, the first N steps of sequence control configure the operation of load shedding and distributed power sources;
3)第N+1步，根据项目实际情况配置主电源的启动操作，此步骤为关键步骤，配置失败后不继续执行；3) Step N+1, configure the start-up operation of the main power supply according to the actual situation of the project, this step is a key step, and do not continue to execute after the configuration fails;
4)第N+2步起配置网架恢复，单项启动条件都为系统母线的电压、频率正常、前一步开关状态正常，根据项目实际设计顺序配置系统中M个网架开关的恢复操作顺序，此部分可以设计多个组合方式，已达到恢复网架的目的；4) From step N+2, configure grid recovery. The individual start conditions are normal voltage and frequency of the system bus, and normal switch status in the previous step. Configure the recovery operation sequence of M grid switches in the system according to the actual design sequence of the project. Multiple combinations can be designed in this part to achieve the purpose of restoring the grid;
5)第N+M+1步起配置投入负荷与发电。顺控项条件包括微电网频率电压正常、网架开关状态正常及投入负荷和发电的限制条件，根据项目不同的情况，采用不同的配置方案。5) From step N+M+1, configure input load and power generation. The sequential control item conditions include the normal frequency and voltage of the microgrid, the normal state of the grid switch, and the constraints on input load and power generation. According to different situations of the project, different configuration schemes are adopted.
并网型微电网系统，有大系统的支持，不用考虑系统容量问题，直接按照微电网规划设计时的最稳定方案配置分布式发电和负荷的投入顺序；离网型系统，没有大系统频率电压支撑，要保证系统稳定需要引入能量管理中的黑启动算法。Grid-connected micro-grid system, with the support of a large system, does not need to consider the system capacity, and directly configures the input sequence of distributed power generation and loads according to the most stable plan in micro-grid planning and design; off-grid system, without large system frequency and voltage Support, to ensure system stability requires the introduction of the black start algorithm in energy management.
离网型微电网能量管理系统的黑启动算法的原则是保证系统的备用及分布式电源渗透率满足要求，通过引入计算量来实现此算法的判断条件。The principle of the black start algorithm of the off-grid microgrid energy management system is to ensure that the system's backup and distributed power penetration rates meet the requirements, and the judgment conditions of this algorithm are realized by introducing calculations.
计算量设置如下：The calculation amount is set as follows:
微电网系统中已投入电源额定容量：P额＝∑(P额i*Ii)，Ii为分布式电源投入/退出状态遥信，状态1为投入，0为退出；The rated capacity of the input power in the microgrid system: Pamount = ∑ (Pamount i *Ii ), Ii is the remote signal of the input/exit status of the distributed power supply, the status 1 is input, and the status 0 is exit;
微电网系统中电源备用容量：P备＝P额-∑P源i；其中，P源i为分布式电源的发电功率实时遥测值，P额i为分布式电源额定容量；Power reserve capacity in the microgrid system: Pstandby = Pamount - ∑ Psource i ; where, Psource i is the real-time telemetry value of the distributed power generation power, and Pamount i is the distributed power rated capacity;
微电网系统中分布式电源渗透率：和其中，P待为该单项配置的待投入的发电机的额定功率，P风额为风力发电系统的额定功率，P光额为光伏发电系统的额定功率；Penetration rate of distributed power in microgrid system: and Among them, P isto be the rated power of the generator to be put into operation for the individual configuration, Pwind power is the rated power of the wind power generation system, and Plight power is the rated power of the photovoltaic power generation system;
投入发电机的组合条件为：P备＞0.2P额且δ风＜δ风渗且δ光＜δ光渗且该发电机遥信状态为未启动，根据该顺控控制对象选择对应类型的渗透率整定值；其中δ风渗和δ光渗为实际项目的风、光最大渗透率。The combination conditions for putting into the generator are: Pstandby > 0.2Pamount and δwind < δwind infiltration and δlight < δlight infiltration and the generator remote signal status is not started, select the corresponding type of infiltration according to the sequence control object rate setting value; where δwind infiltration and δlight infiltration are the maximum wind and light penetration rates of the actual project.
投入负荷的组合条件为：P备＜0.2P额且该负荷遥信为退出状态；The combined conditions for input load are: Preserve < 0.2Pamount and the load remote signal is in the exit state;
6)当最后一个负荷投入成功或者最后一台发电机投入失败则结束循环，顺序控制完成，黑启动控制结束。6) When the last load input is successful or the last generator input fails, the cycle ends, the sequence control is completed, and the black start control ends.
本发明的顺序控制在微电网能量管理系统中的应用装置实施例。An embodiment of the application device of the sequence control in the microgrid energy management system of the present invention.
本实施例的顺序控制在微电网能量管理系统中的应用装置与SCADA系统通信连接进行数据交互，该装置包括顺序控制计划制定模块及顺序控制计划配置模块，顺序控制计划制定模块用于根据不同项目的需求及微电网系统设备信息，制定顺序控制计划，顺序控制计划包括顺序控制计划ID、启动条件及顺序控制项，所述启动条件为顺序控制启动所要满足的条件，所述顺序控制项用于配置顺序控制每一步的流程操作；The sequence control application device of this embodiment in the microgrid energy management system communicates with the SCADA system for data interaction. The device includes a sequence control plan formulation module and a sequence control plan configuration module. The sequence control plan formulation module is used for different projects. needs and microgrid system equipment information, formulate a sequence control plan, the sequence control plan includes the sequence control plan ID, start conditions and sequence control items, the start conditions are the conditions to be met when the sequence control is started, and the sequence control items are used for The configuration sequence controls the process operation of each step;
顺序控制计划配置模块用于通过配置工具预先将顺序控制计划配置到微电网能量管理系统相应的自动控制流程中。The sequential control plan configuration module is used to pre-configure the sequential control plan into the corresponding automatic control process of the microgrid energy management system through the configuration tool.
该应用装置可位于微电网能量管理系统外部，与微电网能量管理系统通信连接进行数据交互。该装置也可配置在微电网能量管理系统内部，与微电网能量管理系统为一体。The application device can be located outside the microgrid energy management system, and communicate with the microgrid energy management system for data interaction. The device can also be configured inside the micro-grid energy management system, and integrated with the micro-grid energy management system.
如图2所示，微电网能量管理系统(简称MEMS)为一种控制管理装置，其内部包括多种控制管理模块，如黑启动控制模块、模式切换模块、优化调度模块、运行控制模块等。其能够接收SCADA系统上传的遥测、遥信信息，并通过上述应用装置实现各种项目的顺序控制。As shown in Figure 2, the microgrid energy management system (MEMS for short) is a control management device, which includes a variety of control management modules, such as black start control module, mode switching module, optimal scheduling module, operation control module, etc. It can receive the telemetry and telesignal information uploaded by the SCADA system, and realize the sequence control of various projects through the above-mentioned application device.
本实施例中的应用装置可以实现微电网的黑启动控制，具体控制流程参见上述方法实施例，这里不再详细阐述。The application device in this embodiment can realize the black start control of the microgrid. For the specific control process, refer to the above method embodiment, and will not be described in detail here.
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