一种基于三端口网络的互感器电压串联加法

doi:10.3969/j.issn.1000-1158.2021.04.01

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Abstract In 1954 Zinn E and Forger K researched series-parallel voltage summation circuit by employing voltage transformers successfully. In 1988 the National High Voltage Metering Station studied the bilateral series voltage summation circuit successfully. In 2006 the National High Voltage Metering Station employed series type voltage transformer for bilateral voltage summation. In 2008 the test voltage reached 1000/3kV and the uncertainty of voltage ratios was not more than 4×10^{-5(P=95%). In order to reduce the uncertainty of voltage ratio, it is necessary to eliminate the shielding error and proximity interference of the series type voltage transformer. In addition to design a series type voltage transformer with more perfect shielding structure for electromagnetic interference, the theory of three-port network could also be used to implement voltage summation. Following a certain test procedure the shielding error and proximity interference in the summation operation would be largely compensated by the response superposition of the three-port network. In 2013, the 500kV power frequency voltage proportional self calibration system of Guangdong Electric Power Research Institute was used for verification test. Compared with the data in 1988, the shielding error at 110/3kVdecreased from 18×10^-6 to 1.5×10^-6, and compared with the data in 2006 the uncertainty of ratio error at 500/3kV decreased from 15×10^-6 to 7×10^-6(P=95%).}

Key words： metrology high voltage measurement three-port network voltage series summation series type voltage transformer voltage ratio standard

Received: 21 March 2019 Published: 20 April 2021

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TB971

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	Articles by authors
	ZHOU Feng
	LEI Min
	Wang Le-ren
	YIN Xiao-dong
	LIU Hao

Cite this article:

ZHOU Feng,LEI Min,Wang Le-ren, et al. A Transformer Voltage Series Method Based on Three-Port Network[J]. Acta Metrologica Sinica, 2021, 42(4): 401-408.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2021.04.01 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2021/V42/I4/401

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