|Table of Contents|

Design and application of automatic verification system forultra-high voltage current transformer(PDF)

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2017年06期
Page:
730-
Research Field:
Publishing date:

Info

Title:
Design and application of automatic verification system forultra-high voltage current transformer
Author(s):
Xu Minrui12Zeng Jie3Mu Xiaoxing12Li Zhixin12Chen Gang12
1.State Grid Jiangsu Electric Power Company Research Institute,Nanjing 211103,China; 2.State Grid Key Laboratory of Electric Energy Measurement,Nanjing 210019,China; 3.State Key Laboratory of Mechanics and Control of Mechanical Structures,Nanjing Univer
Keywords:
ultra-high voltage current transformers automatic verification systems gas-insulated switchgears intelligent power supplys large capacity current generators reactive power compensation devices
PACS:
TM452
DOI:
10.14177/j.cnki.32-1397n.2017.41.06.011
Abstract:
An automatic verification system for ultra-high voltage(UHV)gas-insulated switchgear(GIS)current transformer is researched to solve the onsite verification problem of UHV current transformers.The system mainly consists of an intelligent power supply,a large capacity current generator,a reactive power compensation device and a standard current transformer.The intelligent power supply has the functions such as power electronic power supply and electrical power supply series output,circuit parameter calculation,reactive power compensation control and error verification.The large capacity current generator is designed by the method of series and parallel connection of the primary winding.The multi-combination reactive power compensation device is designed using the parallel compensation of the primary and secondary side.This system passes the system test of provincial measurement institution and onsite verification of State Grid key UHV project current transformer.The results show that,the verification system realizes accurate measurement of primary circuit parameters of UHV GIS current transformers,electriferous automatic switching of reactive power compensation device for current generators and automatic error verification,and that ensures the accurate and quick positioning of 7 200 A high current verification point and 15 A small current verification point,and reduces the capacity requirements of the onsite power supply and the current generator.

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Last Update: 2017-12-31