Online setting method of safety and stability emergency control fixed value of electric power system

A power system, emergency control technology, applied in electrical components, circuit devices, AC network circuits, etc., can solve the problem of not further giving online optimization strategies, limited offline strategies, etc.

Inactive Publication Date: 2012-08-15
CHINA SOUTHERN POWER GRID COMPANY +2
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Problems solved by technology

However, this method is limited to the online verification of the offline strategy, and does not further provide an online optimization strategy. If the evaluation results show that the offline strategy does not meet the requirements, offline analysis is still required to correct the strategy

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  • Online setting method of safety and stability emergency control fixed value of electric power system
  • Online setting method of safety and stability emergency control fixed value of electric power system
  • Online setting method of safety and stability emergency control fixed value of electric power system

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Embodiment Construction

[0026] The present invention will be described in further detail below with reference to the accompanying tables and in conjunction with examples.

[0027] In this example, first, according to step 1), the current operating state of the power system is identified according to the real-time data of the safety and stability control system, and the identification of the power system network topology, controllable measure space, and control section flow is realized. Through this step, it was identified that the system was in the normal mode at that time, and the transmission power of the Xing’an DC section was 2900MW. The relevant data are shown in Table 1.

[0028] Then, according to step 2), according to the network topology of the power system and the power flow of the control section, the control strategy and controllable measure space in the current mode are obtained by matching the expected faults covered by the safety and stability control system. At this time, the Anpeng do...

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Abstract

The invention belongs to the technical field of safety and stability control of an electric power system, which is applicable to a safety and stability emergency control system for setting a fixed value based on online real-time data. The online setting method disclosed by the invention comprises the following steps: 1) identifying the current operation state of the electric power system according to the real-time data collected by the safety and stability control system; 2) matching according to the operation state of the electric power system to get an offline emergency control strategy of an anticipated fault and a controllable measure space; 3) performing discretization treatment against continuous control measures and performing unification treatment on the controllable measure space to form the discretized measure space; 4) performing safety and stability evaluation on the system after control according to the offline fixed value under the anticipated fault based on the real-time profile data, and optimizing a control quantity according to the evaluation result; and 5) reversely deducting the online fixed value according to the control quantity after optimization. According to the method disclosed by the invention, the online setting of the safety and stability emergency control fixed value of the electric power system can be realized, and the reliability and economical efficiency of the emergency control strategy can be significantly improved.

Description

technical field [0001] The invention belongs to the technical field of power system safety and stability control, and more precisely relates to an online setting method for power system safety and stability emergency control fixed value. Background technique [0002] The safety and stability emergency control device (hereinafter referred to as: the stability control device) has been widely used in the power system. After the power component fails, it can quickly identify the fault, and quickly match the pre-established emergency control strategies. [0003] With the expansion of the scale of the power system and the changeable mode of operation, it is difficult to achieve optimal control and even ensure the safety and stability of the power system through the emergency control strategy formulated by offline analysis. Stabilize emergency control strategies to make corrections to strategies developed offline. For this reason, the Chinese patent document CN101881942A ("Struct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00
Inventor 汪际锋徐泰山李建设汪马翔黄河薛禹胜苏寅生鲍颜红徐光虎刘韶峰刘洪涛郑伟
Owner CHINA SOUTHERN POWER GRID COMPANY
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