Electromagnetic disturbance waveform feature extracting method for transformer substation gas insulation switch

A gas-insulated switch, electromagnetic disturbance technology, applied in the direction of measuring electricity, measuring electrical variables, instruments, etc.

Inactive Publication Date: 2015-02-18
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is still a lack of a reliable method for extracting the waveform characteristics of the electromagnetic d

Method used

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  • Electromagnetic disturbance waveform feature extracting method for transformer substation gas insulation switch
  • Electromagnetic disturbance waveform feature extracting method for transformer substation gas insulation switch
  • Electromagnetic disturbance waveform feature extracting method for transformer substation gas insulation switch

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Embodiment Construction

[0046] The invention provides a method for extracting electromagnetic disturbance waveform features of a gas insulated switch in a substation, based on the following Figure 1~6 , specifically explain the preferred embodiment of the present invention.

[0047] according to figure 1 The schematic diagram of the test system and the figure 2 The flow chart of waveform feature extraction of electromagnetic disturbance caused by switching operation of GIS substation is shown. The extraction method of the waveform feature of the electromagnetic disturbance caused by the GIS substation switch operation specifically includes the following steps:

[0048] Step 1: When the switch operation of the GIS substation under different voltage levels, record the electromagnetic disturbance waveform data of the analog sensor port A on the GIS pipeline or the intelligent component port a in the GIS control cabinet; the measurement system for measuring the electromagnetic disturbance waveform re...

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Abstract

The invention relates to an electromagnetic disturbance waveform feature extracting method for a transformer substation gas insulation switch and belongs to the field of the electromagnetic compatibility technology for secondary equipment of transformer substations. The electromagnetic disturbance waveform feature extracting method for the transformer substation gas insulation switch specially comprises the steps that when on-off operation is conducted on an GIS transformation substation under different voltage classes, electromagnetic disturbance waveform data of the port of a sensor on a GIS pipeline or the port of an intelligent component in a GIS collection control cabinet are measured and recorded; the obtained electromagnetic disturbance waveform data are calculated according to a formula for the common-mode voltage and difference-mode voltage in electromagnetic compatibility conducted interference, so that a common-mode interference waveform and a difference-mode interference waveform are obtained; macroscopic feature parameters and microscopic feature parameters are extracted respectively. By the adoption of the electromagnetic disturbance waveform feature extracting method for the transformer substation gas insulation switch, all macroscopic feature parameters and all microscopic feature parameters of disturbance waveforms can be obtained reliably and accurately, and quantitative analysis of the waveforms of electromagnetic disturbance caused by on-off operation of the GIS transformation substation is achieved.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic compatibility of substation secondary equipment, and in particular relates to a method for extracting electromagnetic disturbance waveform features of gas insulated switches in substations, in particular to a method for extracting waveform features of electromagnetic disturbance caused by switch operations in GIS substations. Background technique [0002] Gas insulated switchgear (GIS) substation has the advantages of small footprint, good sealing, little impact on the environment, high operational reliability, long maintenance cycle, less maintenance workload, low operating cost, etc., and has been widely used in my country's power grid. application. When the isolation switch in the GIS is operated, a traveling wave with a very steep wave head is generated, and these traveling waves form a very fast transient overvoltage after multiple refraction and reflections in the GIS. When it reache...

Claims

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Application Information

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IPC IPC(8): G01R31/00
Inventor 刘骁繁吴恒天焦重庆崔翔
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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