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Turn-to-turn protection saturation maloperation prevention method and device for high-voltage shunt reactor

A reactor and parallel technology, applied in emergency protection circuit devices, measuring devices, measuring resistance/reactance/impedance, etc., can solve problems such as inter-turn protection misoperation

Active Publication Date: 2020-08-11
CHINA ELECTRIC POWER RES INST +2
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  • Abstract
  • Description
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Problems solved by technology

[0005] This application provides a high-voltage shunt reactor inter-turn protection anti-saturation misoperation method and device, which solves the problem of saturation-induced inter-turn protection misoperation

Method used

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  • Turn-to-turn protection saturation maloperation prevention method and device for high-voltage shunt reactor
  • Turn-to-turn protection saturation maloperation prevention method and device for high-voltage shunt reactor
  • Turn-to-turn protection saturation maloperation prevention method and device for high-voltage shunt reactor

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Embodiment Construction

[0072] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, the present application can be implemented in many other ways different from those described here, and those skilled in the art can make similar promotions without violating the connotation of the present application. Therefore, the present application is not limited by the specific implementation disclosed below.

[0073] figure 1 It is a schematic flow chart of a high-voltage shunt reactor turn-to-turn protection anti-saturation misoperation method provided by this application, combined with the following figure 1 The method provided by this application is described in detail.

[0074] Step S101 , according to the effective value of the direct current component, the effective value of the second harmonic and the effective value of the fundamental wave component of the three-phase current of the high voltage shunt reactor, a c...

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Abstract

The invention discloses a turn-to-turn protection anti-saturation maloperation method and device for a high-voltage paralleling reactor, locks turn-to-turn protection through the characteristic that direct current and harmonic components are large during high-saturation resistance, identifies turn-to-turn short circuit faults through waveform characteristics of phase impedance values and open protection actions, and solves a problem of turn-to-turn protection maloperation caused by saturation.

Description

technical field [0001] The application relates to the field of anti-malfunction of electric power system, in particular to a method for anti-saturation maloperation of inter-turn protection of high-voltage shunt reactor, and at the same time relates to an anti-saturation anti-malfunction device of inter-turn protection of high-voltage shunt reactor. Background technique [0002] High-voltage shunt reactor (referred to as "high reactance") is a kind of device used to compensate reactive power, limit the increase of power frequency voltage and operating overvoltage, and improve voltage distribution, among them, such as energy pumping high reactance, controllable high reactance Such devices can also realize the functions of supplying electricity to remote stations and flexibly controlling voltage and reactive power. At present, high-voltage shunt reactors have been widely used in super- and ultra-high-voltage transmission lines in my country, and are generally installed at the ...

Claims

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Application Information

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IPC IPC(8): H02H7/00G01R31/52G01R27/02
CPCH02H7/00G01R31/52G01R27/02Y02E40/30
Inventor 戴飞扬王兴国周泽昕李勇柳焕章
Owner CHINA ELECTRIC POWER RES INST
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