Regional power grid automatic voltage control (AVC) method

A control method and technology of regional power grid, applied in the direction of AC network voltage adjustment, reactive power compensation, etc., can solve problems such as unfavorable AVC reactive power and voltage control, optimize the number of equipment actions, improve service life, and reduce equipment damage accidents. Effect

Active Publication Date: 2014-05-21
STATE GRID CORP OF CHINA +1
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Problems solved by technology

It is also proposed to introduce the inertia factor and acceleration factor respectively according to the continuous action interval time, voltage and reactive power over-limit time to form a diagnostic function to determine the state of the equipment (actionable or non-

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  • Regional power grid automatic voltage control (AVC) method
  • Regional power grid automatic voltage control (AVC) method
  • Regional power grid automatic voltage control (AVC) method

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Embodiment Construction

[0011] Based on the traditional AVC control strategy, the present invention comprehensively considers the load change trend on the basis of the hierarchical and partitioned control strategy, and adds the electrical control attribute diagnosis link of the current state of the transformer tap and capacitor / reactor group, and proposes a method based on optimizing the number of equipment actions The AVC control strategy makes the control strategy predictable, realizes advanced control according to the operating status of the equipment, optimizes the number of equipment actions in the entire time sequence, and improves the utilization rate of the equipment, which is of great significance to improving the service life of the equipment. The specific control method is as follows:

[0012] The regional power grid AVC in the present invention draws on the idea of ​​traditional grading and zoning, and the grading is generally divided according to the voltage level of the power grid; the z...

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Abstract

The invention discloses a regional power grid automatic voltage control (AVC) method. An AVC system conducts classification and partitioning through PAS network modeling according to a distribution state of a power system voltage reactive space, the classification is conducted according to voltage levels of the power grid, and the partitioning is conducted according to a local area feature of reactive balance. An AVC system control mode gives priority to a sequence of first optimal control of area voltage, then correction control of voltage of all levels and finally the area reactive optimal control. The area voltage optimal control is optimizing of center point bus voltage level in a correction system. The correction control of the voltage of all levels is optimizing of node voltage level in an optimizing correction system. By arranging a classification partitioning control strategy on a traditional AVC and by adding a load predicting link and a link of diagnosing an electric control attribute of a device current state, the control strategy is predictable. Meanwhile, advanced control is achieved according to a device operating state, and device movement delay is reduced.

Description

technical field [0001] The invention relates to an optimal control method based on the traditional automatic voltage control system (AVC). Background technique [0002] Voltage quality, as one of the important indicators to measure the quality of power system operation, has an important impact on ensuring the safe use of electrical equipment and product quality. With the rapid development of power system automation and communication technology, the application of automatic voltage control (AVC) technology based on EMS / SCADA system is becoming more and more common. good technical means. [0003] Existing grid AVC often only considers the current time section of the power system, but does not consider historical experience and future trends. Therefore, frequent switching of equipment, low utilization of equipment, etc. are inevitable, and the number of equipment actions cannot be optimized. [0004] At present, the optimization method adopted by the AVC system has the idea o...

Claims

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Application Information

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IPC IPC(8): H02J3/12H02J3/16
CPCY02E40/30
Inventor 林其友任水华王刘芳赵武王庆国蒯群李涛黄晟庞彦
Owner STATE GRID CORP OF CHINA
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