Power system security and stability adaptive emergency control system and method

An emergency control and power system technology, applied in circuit devices, electrical components, etc., can solve the problems that the practicability is difficult to meet the engineering requirements, and the adaptive emergency control method has not been popularized and applied.

Active Publication Date: 2015-12-09
NARI TECH CO LTD +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the operation time corresponding to the online strategy given by this method is always earlier than the fault occurrence time, the difference between the power system operation state at the fault occurrence time and the power system operation state corresponding to the online strategy cannot be quantified. Under the influence of the accuracy and reliability of the online strategy, its practicability is difficult to meet the engineering requirements
This is also the key reason why the adaptive emergency control method has not been popularized and applied.

Method used

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  • Power system security and stability adaptive emergency control system and method
  • Power system security and stability adaptive emergency control system and method
  • Power system security and stability adaptive emergency control system and method

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Embodiment 1

[0058] The power system safety and stability self-adaptive emergency control system of this embodiment is composed of two parts: the central station at the dispatching end and the station-side control station. The following description will be made according to the fact that the safety and stability self-adaptive emergency control system only defends against one expected failure. For anticipated failures, the same processing as the following can be carried out for each expected failure;

[0059] The central station at the dispatching end includes three modules: real-time information acquisition module, emergency control advanced decision calculation module, and emergency control optimization strategy delivery module, among which:

[0060] The real-time information acquisition module is responsible for cyclically receiving the real-time operating status, measured information and real-time mode word S of the emergency control device sent from the plant station control station acc...

Embodiment 2

[0068] The power system safety and stability self-adaptive emergency control method of this embodiment uses the above-mentioned power system safety and stability self-adaptive emergency control system to control the power system, specifically including the steps of sending real-time information, the steps of acquiring real-time information, emergency control advance There are six steps in the steps of decision-making calculation, delivery of emergency control optimization strategy, acceptance of advanced decision-making information, and selection and execution of emergency control strategy after the expected failure occurs; The real-time operating status information, measured information and real-time mode word S of the emergency control device of the station are sent to the central station of the dispatching end; through the acquisition of real-time information, the central station of the dispatching end receives the above information sent by the control station of the plant st...

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Abstract

The invention discloses a power system security and stability adaptive emergency control system and a method in order to solve the technical problem in existing adaptive emergency control that an emergency control online strategy aiming at the running state before the fault time is adopted, the running time corresponding to the strategy is always earlier than the fault time, and the practicability of the strategy can hardly meet the engineering requirements. According to the adaptive emergency control method of the invention, emergency control optimization decision calculation is carried out for the future running state, so that there are emergency control optimization strategies corresponding to a period before and a period after the fault time respectively. When the 'mode word' used to search an offline strategy at the fault time is the same with the 'mode words' of the emergency control optimization strategies at two time moments before and after the fault time respectively and close to the fault time, the union set of the emergency control optimization strategies at the two time moments is used as an adaptive emergency control strategy at the fault time. Organic unity between control precision and reliability is realized, and the engineering practicability is improved.

Description

technical field [0001] The invention belongs to the technical field of safety and stability emergency control of electric power system, in particular, the invention relates to a method suitable for ensuring the safety and stability of the power system after the expected failure defended by the second line of defense in the "Guidelines for Safety and Stability of Electric Power System" Adaptive emergency control system and method. Background technique [0002] The second line of defense in the existing "Guidelines for Safety and Stability of Electric Power Systems" usually adopts the control strategy of offline setting. This control strategy is usually conservative and the control amount is too large. potential safety hazards. In order to reduce the risk of excessive or insufficient control quantity of offline tuning caused by the difference between the actual operating state of the power system and the operating state of the power system considered in the offline tuning cal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J13/00
CPCH02J13/00
Inventor 徐泰山许涛刘天斌鲍颜红任先成张剑云徐友平周海锋张金龙阮晶晶
Owner NARI TECH CO LTD
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