Method for analogue simulation of ultrahigh-voltage GIS (gas insulated switchgear) oscillation type lightning surge voltage withstand test

A technology of lightning impulse voltage and withstand voltage test, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of poor safety, low reliability, and poor economic benefits, and achieve high reliability and safety. Good and economical effect

Active Publication Date: 2014-02-05
STATE GRID CORP OF CHINA +2
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[0005] In the process of realizing the present invention, the inventor found that there are at

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  • Method for analogue simulation of ultrahigh-voltage GIS (gas insulated switchgear) oscillation type lightning surge voltage withstand test
  • Method for analogue simulation of ultrahigh-voltage GIS (gas insulated switchgear) oscillation type lightning surge voltage withstand test
  • Method for analogue simulation of ultrahigh-voltage GIS (gas insulated switchgear) oscillation type lightning surge voltage withstand test

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[0052] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0053] According to an embodiment of the present invention, such as Figure 1-Figure 11 As shown, the simulation method of ultra-high voltage GIS oscillation lightning impulse voltage withstand test is provided. The ultra-high voltage GIS oscillating lightning impulse voltage withstand test simulation method uses the numerical simulation software ATP-EMTP to simulate the field test and apply oscillating lightning impulse voltage waves to the GIS equipment of a 750kV power station respectively, and calculate and analyze the GIS equipment under the voltage wave The propagation situation of medium wave and the possible maximum voltage value of each node, and the compar...

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Abstract

The invention discloses a method for analogue simulation of an ultrahigh-voltage GIS (gas insulated switchgear) oscillation type lightning surge voltage withstand test. The method comprises the following steps: according to the structural sizes of GIS devices of an actual transformer substation and electric wiring, calculating equivalent impedances of all components, and according to the geometric sizes of the components, calculating the wave impedance parameters and the wave velocity parameters of a breaker, a disconnector and a bus in a simulation model; according to the geometric sizes of the components and the parameters of the simulation model, establishing the simulation model by utilizing the ATP-EMTP software; determining the mode of connection of the simulation model and the waveform parameter of the oscillation type lightning surge voltage; adopting an oscillation type lightning surge voltage wave to perform impact simulation to the same mode of connection; determining the parameters of the actual GIS device oscillation type lightning surge voltage withstand test according to the simulation result. With adoption of the method disclosed by the invention, the defects in the prior art that the reliability is low, the security is poor, the economic benefits are poor and the like can be overcome, so as to realize the advantages of high reliability, excellent security and excellent economic benefits.

Description

technical field [0001] The invention relates to the technical field of high-voltage electric tests, in particular to a simulation method for an ultra-high voltage GIS oscillation type lightning impulse voltage withstand test. Background technique [0002] Gas insulated switchgear (GIS for short) is one of the important components of the UHV power grid. , Cable terminals, inlet and outlet bushings, etc. are optimally designed and installed in their respective sealed rooms, and finally assembled in a whole shell filled with SF6 as the insulating medium. Since it came out in the late 1960s, it has developed rapidly in the power transmission and transformation system and occupies a very important position. [0003] GIS substations are generally hub stations and occupy an extremely important position in the power system. Once it is damaged by lightning, it will cause a large-scale power outage and cause major economic losses. Lightning accidents in substations come from two as...

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Application Information

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IPC IPC(8): G06F17/50
CPCY02E60/76Y04S40/22Y02E60/00
Inventor 温定筠张广东杨志华黄强张世才王多毛光辉胡春江冯书安张玉宏张小敏秦睿王维洲陈宏刚江峰
Owner STATE GRID CORP OF CHINA
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