1200kV Lightning Impulse Voltage Standard Measurement System
WANG Kaiyu1,2,ZHAO Wei2,LI Chuansheng2,CAI Jinhui1,ZHANG Huanghui3
1. China Jiliang University, Hangzhou, Zhejiang 310018, China
2. National Institute of Metrology, Beijing 100029, China
3. Fujian Metrology Institute, Fuzhou, Fujian 350001, China
Abstract At present, the rated voltage of the national measurement standard system only 700kV, which can't meet the tracing demand of UHV apparatus above 3500kV. A structural analysis is conducted on the developed 1200 kV resistive divider, and performance testing and improvement are carried out on the established 1200 kV impulse voltage measurement system. Comparison and calibration are carried out with the existing 700 kV impulse voltage national standard measurement system within the voltage range of 700kV, and linearity experiments are conducted in the voltage range of 700kV to 1200kV.The evaluation of uncertainty in the calibration of 1200kV standard impulse voltage measurement system is also introduced, the results show that the measurement errors of the test voltage (peak voltage) , front time and time to half-value of the 1200kV lightning impulse voltage standard measuring system are all within the permissible range of the international standard IEC 60060 and the national standard GB/T 16927; the rated voltage level of the national standard measurement system of impulse voltage in our country is raised to 1200kV.
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