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Power system temporary stability and thermal stabilization cooperativeness emergency control method

A technology of emergency control and transient stability, applied in computer control, general control system, control/regulation system, etc., can solve the problem that the emergency control of power transient stability or thermal stability is not reliable and powerful enough to improve the margin. , the effect of improving efficiency

Inactive Publication Date: 2008-11-05
JIANGSU ELECTRIC POWER CO
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Problems solved by technology

Therefore, the practical application of emergency control considering only power transient stability or thermal stability is not reliable and robust enough

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  • Power system temporary stability and thermal stabilization cooperativeness emergency control method
  • Power system temporary stability and thermal stabilization cooperativeness emergency control method
  • Power system temporary stability and thermal stabilization cooperativeness emergency control method

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Embodiment Construction

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and examples. However, the invention is not limited to the examples given.

[0016] The electric system transient stability and thermal stability coordinated emergency control method of the present invention, its steps are as follows:

[0017] (1) According to the power grid operating status, model and parameters, and expected fault scenarios, conduct power grid thermal stability assessment and thermal stability emergency control strategy calculation, including: calculate the comprehensive sensitivity index of thermal stability emergency control optional measures, and calculate thermal stability based on this index Emergency control strategy, go to step (2);

[0018] (2) According to the power grid operating status, model and parameters, and expected fault scenarios, perform power grid transient stability assessment and transient stability emergency control strat...

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Abstract

A power system transient stability and thermal stability coordination emergency control method, includes the following steps: (1) computing the integration sensitivity index of the optional measurement of the thermal stability emergency control and computing the thermal stability emergency control strategy based on the index; (2) checking the transient stability after implementing the thermal stability emergency control strategy, if true, the thermal stability emergency control strategy is used as the coordination emergency control strategy and the computation stops; else, searching the transient stability control strategy; (3) checking the thermal stability after implementing the thermal stability emergency control strategy, if the thermal stability of the electric network comes up to the standard, the computation stops; else switching to the step (1). The invention solves the stability problem meanwhile advances the margin of other stability, enhances the efficiency of the next solution process, finally ensures the high efficiency and the validity of the whole coordination emergency control strategy.

Description

technical field [0001] The invention relates to a general-purpose automatic identification method for a multi-area dynamic operation mode of a large power grid, belonging to the field of power system scheduling automation. Background technique [0002] Due to the increasingly complex operation of the power system, the emergency control of the power system has become one of the necessary means to maintain the stable operation of the system. The emergency control of power system refers to taking measures such as machine cutting and load shedding after an accident to keep the system running stably. Power system stability includes power system transient stability and thermal stability functionally, and transient stability includes transient power angle stability, transient voltage stability and transient frequency stability. If one or more of these stability problems occur under the expected fault, the power grid will have great hidden dangers or even fail to operate normally, ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/26H02H7/28G06Q50/00G05B15/02G06Q50/06
Inventor 马苏龙鲍颜红郭建伟薛禹胜罗建裕徐泰山
Owner JIANGSU ELECTRIC POWER CO