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A method for putting into operation without voltage shock when tcr and fc share one high-voltage switch

A high-voltage switch and no-voltage technology, which is applied in the direction of flexible AC transmission system, reactive power adjustment/elimination/compensation, etc., can solve the problems of voltage shock, power grid shock and large influence, distortion, etc., to avoid voltage shock and improve work quality effect

Active Publication Date: 2011-12-28
辽宁荣信兴业电力技术有限公司
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Problems solved by technology

[0005] When the TCR and FC in the SVC device share a high-voltage switch, due to the delay and distortion of sampling and signal analysis, the voltage shock and distortion will be caused for a period of time after the input, which will have a greater impact and impact on the power grid.

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  • A method for putting into operation without voltage shock when tcr and fc share one high-voltage switch
  • A method for putting into operation without voltage shock when tcr and fc share one high-voltage switch
  • A method for putting into operation without voltage shock when tcr and fc share one high-voltage switch

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[0015] See figure 1 , the system current signal, TCR current signal, and grid voltage signal are pre-processed and signal detected, and then comprehensive calculation, reactive power calculation, and linearization processing are performed in sequence. , Pulse transformation, forming a trigger pulse signal.

[0016] The switching unit is divided into automatic working state and manual working state. Under the working state of normal operation, the system is in the automatic working state. When the high-voltage switch is closed, the system switches to the manual working state. In this working state, the TCR presets the fixed trigger angle. The reactive power of FC is equal to the capacitive reactive power of FC, and the FC current is the set current. After reactive power calculation and linearization processing, the processed signal enters the switching unit. After a delay of 500ms (25 cycles), the system reaches a stable state through logic control and switches to the working...

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Abstract

The invention relates to a voltage surge-free commissioning method when a TCR and an FC share a high voltage switch, which adopts a mode of presetting a fixed trigger angle by the TCR to make the idlework of the TCR equal to the capacitive idle work of the FC when the high voltage switch is switched on. Compared with the prior art, the method has the advantages that: the method adopts the mode ofpresetting the fixed trigger angle by the TCR to effectively avoid voltage impact caused by the impact idle work when the high voltage switch is switched on, and effectively improves the work qualityof a power grid.

Description

technical field [0001] The invention relates to a method for putting into operation without voltage impact when TCR and FC of an SVC device share one high-voltage switch. Background technique [0002] In the application of modern power electronics industry, high-voltage static dynamic reactive power compensation device SVC is often used to eliminate reactive power impact, filter high-order harmonics, balance three-phase power grid, and improve the power supply environment of the power grid. [0003] TCR (Thyristor Controlled Reactor) is the main component of thyristor controlled reactor type static var compensation device. Since a separate TCR can only absorb inductive reactive power, it is often used in conjunction with a parallel capacitor FC. After connecting capacitors in parallel, the total reactive power is the net reactive power after offsetting the reactive power of TCR and parallel capacitors. Its characteristic is that the reactive power of the compensation devic...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/18
CPCY02E40/12Y02E40/10
Inventor 张银山左强赵柏品王剑魏宏伟张磊杜纯铁丁雅丽洪利刘再民孔仲秋
Owner 辽宁荣信兴业电力技术有限公司
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