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Closed-loop control method for transient power angle instability of power system

A power system, transient power angle technology, applied in the field of power system, can solve problems such as less than ideal effectiveness, and achieve the effect of improving effectiveness

Active Publication Date: 2016-01-13
CHINA SOUTH POWER GRID ELECTRIC POWER RES INST
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Problems solved by technology

[0005] In view of the problem that the effectiveness of the transient instability control measures based on wide-area measurement information in the power system existing in the above-mentioned prior art is not ideal, the purpose of the present invention is to provide a closed-loop control system for the transient power angle instability of the power system A control method that can improve the effectiveness of power system transient power angle instability control measures

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  • Closed-loop control method for transient power angle instability of power system
  • Closed-loop control method for transient power angle instability of power system
  • Closed-loop control method for transient power angle instability of power system

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[0018] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0019] see figure 1 A schematic flowchart of a closed-loop control method for power system transient power angle instability in an embodiment.

[0020] S102. Acquire real-time measurement information in the wide-area measurement system.

[0021] The real-time measurement information includes real-time data information when the transient power angle of the power system is unstable, such as the configuration information of the generator set cut-off control device, the operating state information of the generator set, and the dynamic characteristic information of the generator set. Through this step, the original physical quantity data of the cut-off control measure is obtained, and the accuracy of the original physical quantity data in the power system transient p...

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Abstract

The invention discloses a closed-loop control method for the transient power angle instability of a power system, and the method comprises the steps: obtaining real-time measurement information from a wide area measurement system; determining a generator set to be deleted according to the real-time measurement information and an inertia center of the power system, and carrying out machine switching control; continuously monitoring the operation state of the power system based on the wide area measurement system; judging the stability of the power system according to a transient power angle instability criterion; taking machine-switching control measures if the power system is not stable till the power system is stable, thereby forming a closed-loop control strategy, and improving the effectiveness of transient power angle instability control measures of the power system.

Description

technical field [0001] The invention relates to the field of electric power systems, in particular to a closed-loop control method for transient power angle instability of electric power systems. Background technique [0002] With the increasing scale of the interconnected grid, the large-scale access of new energy sources such as wind energy and solar energy, and the wide application of new power electronic devices, the transient stability characteristics of the grid are becoming more and more complex. The traditional event-based transient stability analysis and control modes of "offline decision-making, online matching" and "online decision-making, real-time matching" can no longer meet the requirements for safe and stable operation of large power grids, and are gradually developing in the direction of "real-time decision-making, real-time control". [0003] At the same time, the perfection of the wide-area measurement system in recent years provides a possible technical m...

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Application Information

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IPC IPC(8): H02J3/14H02J3/38
CPCY02B70/3225Y04S20/222
Inventor 吴为饶宏洪潮柳勇军
Owner CHINA SOUTH POWER GRID ELECTRIC POWER RES INST