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A system and method for verifying the suppression effect of suppression wires on gis substation vfto

A technology for substations and wire pairs, which is applied in the direction of measuring electrical variables, testing dielectric strength, and instruments, and can solve problems such as poor economy, high failure rate, and high cost

Active Publication Date: 2022-04-22
CHINA ELECTRIC POWER RES INST +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Damping resistor is an effective device that has been verified by theory and practice, but its cost is high, the failure rate is high, and the economy is poor
For the magnetic ring and suppression wire, the suppression effect is lack of real-type test verification

Method used

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  • A system and method for verifying the suppression effect of suppression wires on gis substation vfto
  • A system and method for verifying the suppression effect of suppression wires on gis substation vfto
  • A system and method for verifying the suppression effect of suppression wires on gis substation vfto

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Embodiment Construction

[0024]Referring now to the accompanying drawings to illustrate exemplary embodiments of the present invention, however, the present invention may be implemented in many different forms, and is not limited to the embodiments described herein, providing these embodiments are provided in order to disclose the present invention in detail and in its entirety, and to those skilled in the art to fully communicate the scope of the present invention. For the terms expressed in exemplary embodiments in the drawings is not a limitation of the present invention. In the drawings, the same elements / elements using the same drawing markers.

[0025] Unless otherwise indicated, the terms used herein ( including scientific and technical terms ) have a general understanding of those skilled in the art to which they belong. Further, it is appreciated that terms defined by dictionaries commonly used should be understood to have a meaning consistent with the context of their relevant domain, and sho...

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Abstract

The present invention provides a system and method for verifying the suppressing effect of conductors on gas-insulated switch GIS substation's ultra-fast transient overvoltage VFTO. The system includes: two GIS bushings BG1 and BG2, two isolating switches DS1 and DS2, A circuit breaker CB, an alternating current source AC for simulating the source side of the high frequency overvoltage and a direct current source DC for simulating the residual charge on the load side affecting the high frequency overvoltage, the alternating current source AC and the direct current source The bushing BG1, the isolating switch DS1, the circuit breaker CB and the bushing BG2 are connected in series between the DCs in sequence through the suppression wire, and another branch is drawn from the connection point C1 between the bushing BG1 and the isolating switch DS1, and the branch passes the suppression The wires are connected to the isolating switch DS2. The system and method simulate the suppression effect of the suppression wire on the VFTO in different ways by adjusting the state of the isolation switch and changing the lengths of L1, L2, L3 and L4 in the test loop by means of the DC voltage, and also provide the evaluation of the isolation switch. Base.

Description

Technical field [0001] The present invention relates to power system power grid cases and protection applications, and more particularly, relates to a system and method for verifying the inhibition of the inhibition wire VFTO of the GIS substation. Background [0002] China's ultra-high voltage AC transmission system almost all use gas insulated switch GIS (Gas InsulatedSwitchgear, GIS) equipment, which has the advantages of compact structure, provincial occupation, easy maintenance, etc., but due to the isolation switch operation caused by the ultra-fast transient overvoltage (Very Fast Transient Overvoltage, VFTO) will bring harm to equipment insulation and normal operation of secondary equipment. The existing VFTO suppression measures mainly include the installation of isolation switch damping resistors, magnetic rings and suppression wires. Damping resistance is a device that has been proven effective in theory and practice, but its cost is high, the failure rate is high, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/12G01R35/00
CPCG01R31/12G01R35/00
Inventor 王磊周姣刘衍张宇龙国华王玲李璿宫瑞磊李伟刘洋
Owner CHINA ELECTRIC POWER RES INST
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