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Power-less compensation control method

A compensation control and algorithm technology, applied in reactive power compensation, reactive power adjustment/elimination/compensation, control/regulation systems, etc.

Active Publication Date: 2007-06-13
DELIXI GROUP INSTRUMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a reactive power compensation control method, which can overcome the above-mentioned shortcomings caused by the single main control physical quantity control, and realize stable and reliable compensation

Method used

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Embodiment Construction

[0021] Below, according to Fig. 1 to Fig. 9, a preferred embodiment of the present invention is given and described in detail, so that the functions and characteristics of the present invention can be better understood.

[0022] The multi-parameter comprehensive control method of reactive power compensation of the present invention adopts the following control parameters: voltage, current, power factor, reactive current, and the number of output circuits. Among them, the voltage is the first control quantity, the current is the second control quantity, the power factor is the third control quantity, the reactive current is the fourth control quantity, and the number of circuits is the fifth control quantity.

[0023] The multi-parameter control principle is as follows:

[0024] The working state of the reactive power compensator can be divided into three states: leading (the power factor exceeds the cut-off threshold), lagging (the power factor is not greater than the input th...

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Abstract

The control method uses voltage as first controlled variable, current as second controlled variable, power factor as third controlled variable, reactive current as fourth controlled variable, number of loop as fifth controlled variable. Comparing voltage, current, power factor, reactive current, and number of loop with their threshold values setup in advance, the method carries out voltage control, current control, power factor control, reactive current control, and number of loop control in sequence. Whole procedure is a large circulation. Based on ever changing parameter such as voltage, current, power factor, reactive current, and number of loop of product, the method does corresponding handling to implement synthetical and stable control.

Description

technical field [0001] The invention relates to a reactive power compensation control method, in particular, a multi-parameter comprehensive control method based on reactive power compensation. Background technique [0002] Reactive power compensator is a device that can reduce line loss, save electric energy, stabilize grid voltage, improve three-phase unbalance of grid, and increase capacity of transformer. It is widely used in power system. [0003] Traditional reactive power compensators based on single-chip microcomputer control have the following deficiencies: [0004] According to different control physical quantities, reactive power compensators can be divided into power factor control type, reactive current control type, and reactive power control type. Their main control physical quantity is relatively simple, and it is prone to misoperation when determining the compensation amount, which cannot be accurate. reliable compensation. [0005] For the power factor re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/18G05F1/70
CPCY02E40/30
Inventor 黄万隆干华雷
Owner DELIXI GROUP INSTRUMENT CO LTD
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