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Series capacitor compensation device, power transmission circuit and TRV suppressing method

A series capacitor compensation and power transmission circuit technology, which is applied in the direction of circuit devices, emergency protection circuit devices, emergency protection circuit devices for limiting overcurrent/overvoltage, etc., can solve the problems of inability to fully suppress and high TRV, and achieve design and Build simple and easy effects

Inactive Publication Date: 2015-02-25
TSINGHUA UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The invention provides a series capacitance compensation device, a power transmission circuit and a method for suppressing TRV, so as to solve the technical problem in the prior art that the high TRV caused by the series capacitance compensation device cannot be fully suppressed

Method used

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  • Series capacitor compensation device, power transmission circuit and TRV suppressing method
  • Series capacitor compensation device, power transmission circuit and TRV suppressing method
  • Series capacitor compensation device, power transmission circuit and TRV suppressing method

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Embodiment Construction

[0056] The invention provides a series capacitance compensation device, a power transmission circuit and a method for suppressing TRV, so as to solve the technical problem in the prior art that the series capacitance compensation device cannot fully suppress the excessively high TRV.

[0057] The general idea of ​​the embodiment of the present invention is as follows:

[0058] In an embodiment of the present invention, a series capacitance compensation device is provided, including: a capacitor; a metal oxide voltage limiter, the capacitor and the metal oxide voltage limiter form a first parallel unit; a spark gap; a fast switch, the spark gap and the The fast switch forms the second parallel unit; the damping device is connected in series between the first parallel unit and the second parallel unit. Since the closing speed of the fast switch is much faster than that of the bypass circuit breaker, and after the fast switch is closed, the entire series capacitor compensation de...

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Abstract

The invention relates to the technical field of electrical and electronic engineering, and discloses a series capacitor compensation device, a power transmission circuit and a TRV suppressing method. The series capacitor compensation device comprises a capacitor, a metallic oxide voltage limiter, a spark gap, a high-speed switch and a damping device, wherein a first parallel connection unit is formed by the capacitor and the metallic oxide voltage limiter, and a second parallel connection unit is formed by the spark gap and the rapid switch; the damping device is connected between the first parallel connection unit and the second parallel connection unit in series so that the technical effect of comprehensively suppressing the TRV caused by the series capacitor compensation device can be achieved.

Description

technical field [0001] The present invention relates to the field of electrical and electronic technologies, in particular to a series capacitor compensation device, a power transmission circuit and a method for suppressing TRV (transient recovery voltage: transient recovery voltage). Background technique [0002] In the high-voltage transmission line, the cut-off of the current is realized by the high-voltage circuit breaker. During the circuit cutting process, an arc will be generated at the moment when the contact of the circuit breaker (arc) is separated, the current in the circuit continues to flow, and the arc is extinguished when the current crosses zero. After the arc is extinguished, there will be a recovery voltage with transient characteristics between the contacts of the circuit breaker (arc), called TRV, which is the power frequency recovery voltage after TRV. Among them, if the amplitude or steepness of TRV is too high and exceeds the insulation strength betwe...

Claims

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Application Information

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IPC IPC(8): H02J3/00H02J3/24H02H9/08
CPCH02H9/08H02J3/00H02J3/002H02J3/24
Inventor 关永刚刘卫东班连庚项祖涛郑彬马其燕
Owner TSINGHUA UNIV
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