A control method of pd simulation device of dc gis
A technology of simulating device and control method, applied in the direction of measuring device, instrument, testing dielectric strength, etc., can solve the problem of low degree of automation, and achieve the effect of high degree of automation
Active Publication Date: 2018-09-18
STATE GRID CHONGQING ELECTRIC POWER CO ELECTRIC POWER RES INST +2
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[0003] At present, the research on GIS PD online monitoring at home and abroad is mainly concentrated on AC, and has not been extended to the DC field. However, with the rapid development of modern UHV DC transmission projects, DC GIS will be more and more widely used. Therefore, the development of DC The PD research of GIS under voltage is of great significance. For this reason, a kind of DC GIS PD simulation device disclosed by those skilled in the art is currently mainly controlled by manual means, and its automation degree is low.
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[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0033] A DC GIS PD simulation device and an experimental method, the present invention mainly includes the following contents: (1) building a DC GIS PD simulation platform; (2) carrying out PD experiments under different insulation defect models. Specific steps are as follows:
[0034] (1) Build a DC GIS PD simulation platform
[0035] see figure 1 A schematic block diagram of a circuit of a DC GIS PD simulation device according to the present invention is s...
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The invention discloses a control method for a DC GIS PD simulation device. Before PD simulation testing, the method firstly carries out the cleaning of a gas discharge chamber through controlling the opening / closing of all control valves of the gas discharge chamber and employing SF6 gas, and then fills SF6 gas with the preset pressure intensity into the gas discharge chamber. Through the adjustment of an output voltage of a DC voltage applying system, the method achieves the PD simulation of a DC GIS through different voltage levels. The method can automatically control the operation of all parts according to the experiment steps and the corresponding control instruction, and is high in automation degree.
Description
technical field [0001] The present application relates to the technical field of on-line monitoring of insulation state of gas insulated switchgear, and more specifically, relates to a control method of a PD simulation device of a DC GIS. Background technique [0002] SF6 gas has excellent insulation and arc extinguishing properties. As an insulating medium, it can improve the dielectric strength and greatly reduce the size of high-voltage equipment. It has been widely used in GIS (Gas Insulated Switchgears, gas insulated switchgears). However, in the process of manufacturing, transportation, installation, maintenance and operation of GIS, various insulation defects will inevitably appear inside, which will lead to distortion of the electric field inside the equipment, and then generate PD (Partial Discharge, partial discharge). When severe PD occurs, on the one hand, PD will speed up further damage to the internal insulation of the equipment, and eventually lead to insulati...
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IPC IPC(8): G01R31/12
CPCG01R31/1263
Inventor 苗玉龙伏进邱妮曾福平姚强唐炬李龙杨旭
Owner STATE GRID CHONGQING ELECTRIC POWER CO ELECTRIC POWER RES INST