ZHANG Qian, XIAO Xia, XU Yan, et al. Influence Analysis of Electric Field Environment on the Accuracy of Electronic Voltage Transformers Based on Resistor Divider in Switchgear[J]. High voltageapparatus, 2019, 55(6): 177-183.
ZHANG Qian, XIAO Xia, XU Yan, et al. Influence Analysis of Electric Field Environment on the Accuracy of Electronic Voltage Transformers Based on Resistor Divider in Switchgear[J]. High voltageapparatus, 2019, 55(6): 177-183. DOI: 10.13296/j.1001-1609.hva.2019.06.026.
Influence Analysis of Electric Field Environment on the Accuracy of Electronic Voltage Transformers Based on Resistor Divider in Switchgear
分析了其在开关柜的工作环境下测量误差的来源。利用Ansys有限元分析软件建立了电子式电压互感器(electrical voltage transformer
EVT)三维模型
基于电场结果
分别分析了杂散电容、母排、邻近相和开关柜柜体对EVT准确度的影响程度
加入EVT屏蔽结构进行仿真;最后结合实体试验
对误差分析结果进行验证。结果表明加上该屏蔽结构的电子式电压互感器准确度达到0.2级
且所得结论对其在开关柜中的实际应用有一定的指导意义。
Abstract
This paper analyzes the source of electrical voltage transformer (EVT) measurement error in the switchgears
based on the working principle of resistive voltage transformers. EVT model is established by Ansys finite element analysis software. According to those electric field results
the influence of the stray capacitance
bur bars
adjacent phases and switchgears on the EVT accuracy are analyzed
and an EVT shield is designed and simulated. Finally
the error analysis results are validated by the entity test. Solutions are meaningful for EVT shield structure designing and practical application in switchgears.
Research on Electric Filed Analytical Model Near EHV Transmission Lines Under Thunderclouds
Simulation and Experimental Study on Partial Discharge Decomposition Components of Air-insulated Switchgear Cabinet Considering the Influence of Temperature and Humidity
Research on Electric Field Distribution Characteristics Simulation Under Typical Defects in the Scaled Model of Valve Side Bushing of UHV Converter Transformer
Research on the Influence of Temperature and Humidity on the Physical Signal of Partial Discharge of Switchgear
RESEARCH ON THE CHARACTERISTICS OF ULTRASONIC SIGNALS OF PARTIAL DISCHARGE IN 12V SWITCHGEAR CABINET
Related Author
WANG Weifang
ZHANG Yilong
XIAO Cien
LIU Yakun
MAO Jinxian
JI Hongquan
XIN Feng
LIU Ruoxi
Related Institution
Key Laboratory of Control of Power Transmission and Conversion, Shanghai Jiao Tong University
Power Research Institute of State Grid Beijing Electric Power Co., Ltd.
State Grid Beijingg Electric Power Company
State Grid Beijing Electric Power Company Urban Power Supply Company
State Grid Shanghai Municipal Electric Power Company