A Transformer Voltage Series Method Based on Three-Port Network
ZHOU Feng1, LEI Min1, Wang Le-ren1, YIN Xiao-dong1, LIU Hao1,2
1.National Central for High Voltage Measurement of China, China Electric Power Research Institute,Wuhan, Hubei 430074, China
2. State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
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%).
周峰,雷民,王乐仁,殷小东,刘浩. 一种基于三端口网络的互感器电压串联加法[J]. 计量学报, 2021, 42(4): 401-408.
ZHOU Feng, LEI Min, Wang Le-ren, YIN Xiao-dong, LIU Hao. A Transformer Voltage Series Method Based on Three-Port Network. Acta Metrologica Sinica, 2021, 42(4): 401-408.
［1］王维,刘夏,张欣. 1000V多盘感应分压器标准建立［J］. 计量学报, 2020, 41(7): 852-856.
Wang W, Liu X, Zhang X. Research on 1000V Multi-decade Inductive Voltage Divider Standard［J］. Acta Metrologica Sinica, 2020, 41(7): 852-856.
［2］Hill J J, Miller A P. A Seven-decade adjustable-ratio inductively coupled voltage divider with 0. 1 part per million accuracy［J］. Proceedings of the IEE—Part B: Electronic and Communication Engineering, 2010, 109(44): 157-162.
［3］Zinn E, Forger K. Ein Messverfahren zum obsoluten Bestimmen der Fehler von Spannungswandlern［J］. ETZ. A, 1954, 24: 805-809.
［4］Zinn E. Fundmentale Bestimmung der Fehler von Spannungswandlern durch ein Summierverfarhren ueber Zwischenwandler［J］. angew. Phys, 1958, 10: 511-516.
［5］Braun A, Richter H, Danneberg H. Determination of Voltage Transformer Errors by Means of a Parallel-series Step-Up Method ［J］. IEEE Transactions on Instrumentation & Measurement, 1980, 29(4): 490-492.
［6］王乐仁. 工频电压加法的新线路及应用［J］. 计量学报, 1992, 13(3): 221-224.
Wang L R. New Circuits and Applications for Voltage Summation Method in Industrial Frequency［J］. Acta Metrologica Sinica, 1992, 13(3): 221-224.
［7］Yin X D, Liu H, Lan L, et al. Precision 500/3kV Three-Stage Voltage Transformer with Double Excitation［J］. IET Science, Measurement & Technology, 2019, 13(9): 1239-1244.
［8］Liu H, Zhou F, et al. The Development of Precision 500/3kV Two-Stage Voltage Transformer with High-Voltage Excitation［J］. IEEE Transactions on Instrumentation and Measurement, 2021, DOI: 10.1109/TIM.2021.3053979.
［9］国网电力科学研究院. 一种用于超高压和特高压的电磁式电压互感器: ZL200610124452. 6［P］. 2010-07-28.
［10］ Zhou F, Jiang C Y, Lei M, et al. Improved Step-Up method to determine the errors of voltage instrument transformer with high accuracy［J］. IEEE Transactions on Instrumentation and Measurement, 2020, 69(4): 1308-1312.
［11］王勤, 雷民, 周峰, 等. 500kV工频电压加法自校准技术研究与应用［J］. 电测与仪表, 2013, 50(4): 86-89.
Wang Q, Lei M, Zhou F, et al. The Research and Application of 500kV Voltage Ratio Self-Calibration Technique Based on the Series Summation［J］. Electrical Measurement and Instrumentation, 2013, 50(4): 86-89.
［12］周峰, 岳长喜, 雷民, 等. 基于电压串联加法的1000kV国家工频电压计量标准［J］. 计量学报, 2012, 33(6): 541-545.
Zhou F, Yue C X, Lei M, et al. Establishment of National Voltage Ratio Standard for 1000kV at Power Frequency Based on the Series voltage Summation［J］. Acta Metrologica Sinica, 2012, 33(6): 541-545.
［13］刘浩, 姜春阳,余也凤, 等. 屏蔽泄漏变化对电压互感器串联加法的影响研究［J］. 电测与仪表,2019,56(9):124-127.
Liu H, Jiang C Y, Yu Y F, et al. Research on the influence caused by shielding leakage variation on the method of series summation for voltage transformers［J］. Electrical Measurement & Instrumentation, 2019, 56(9): 124-127.
［14］广东电网电力科学研究院. 500kV工频电压比例标准技术报告［R］. 广州:2013.
［15］能源部武汉高压研究所.110kV工频电压比例标准自校系统研制报告［R］. 武汉:1988.
2021, Vol. 42 
