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Method for quickly and stably controlling power grid fault with automatic coordinated control

A stable control method and coordinated control technology, applied in the direction of electrical components, circuit devices, AC network circuits, etc., can solve problems such as over-cutting or under-cutting, and achieve the goals of promoting development, improving the level of dispatching and control operations, and ensuring safe and stable operation Effect

Active Publication Date: 2019-03-19
STATE GRID HENAN ELECTRIC POWER
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Problems solved by technology

However, the current load control target for accidents is determined offline based on operating experience, and there may be problems with over-cutting or under-cutting during online execution

Method used

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  • Method for quickly and stably controlling power grid fault with automatic coordinated control
  • Method for quickly and stably controlling power grid fault with automatic coordinated control
  • Method for quickly and stably controlling power grid fault with automatic coordinated control

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Embodiment Construction

[0057] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the present invention Examples, not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0058] The automatic coordinated control power grid failure fast and stable control method proposed by the present invention, firstly, conduct grid online safety analysis and expected failure safety analysis, find out the real-time status of the power grid and safety problems under expected failure, and propose an auxiliary decision-making scheme; then, according to the auxiliary ...

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Abstract

The invention provides a method for quickly and stably controlling a power grid fault with automatic coordinated control. The method comprises the steps of: acquiring a regional power grid model and regional power grid state estimation data at each first preset time period; obtaining a whole-network model comprising an external network and whole-network state estimation data at each second presettime period; according to different grid online safety analysis and precision fault safety analysis demands, and selecting the regional power grid model and the regional power grid state estimation data or the whole-network model and the hole-network state estimation data as online data for computing; according to the online data for computing, performing power grid online safety analysis and precision fault safety analysis to obtain an analysis result and an auxiliary decision strategy; and according to the analysis result, performing stable control of the power grid through an AGC, an AVC and a load batch control system according to the auxiliary decision strategy. The method for quickly and stably controlling a power grid fault with automatic coordinated control can be suitable for large power grid operation and control demands and can achieve the quick and stable control of the power grid through the one-key operation when the power grid generates major failures.

Description

technical field [0001] The invention relates to the technical field of power grid scheduling control operation, in particular to an automatic coordinated control power grid fault fast and stable control method. Background technique [0002] With the gradual formation of my country's UHV AC / DC hybrid power grid pattern, the safety and stability characteristics and mechanism of the power system are becoming more and more complex, and the difficulty of power grid operation control is increasing. Require. As an important link in the construction of "big operation" in the "three collections and five majors" of the State Grid Corporation of China, the State Grid Corporation of China has started the construction of a smart grid dispatching control system since 2009, including online security analysis systems, early warning and auxiliary decision-making functions, and automatic power generation. Control functions (Automatic Generation Control; AGC), automatic voltage control functio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00
CPCH02J3/00H02J3/001
Inventor 韩保军吕颖秦军伟王丹杨宵代飞李岩鲁华永韩伟李朝晖宋开振
Owner STATE GRID HENAN ELECTRIC POWER
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