Sensitivity analysis and automatic design of voltage ratio in an optical instrument voltage transformer

1999 ◽  
Vol 35 (3) ◽  
pp. 1769-1772 ◽  
Author(s):  
Cui Xiang ◽  
Zhang Guoqiang
Keyword(s):  
Sensitivity Analysis ◽  
Automatic Design ◽  
Optical Instrument ◽  
Voltage Transformer ◽  
Voltage Ratio

Voltage Ratio Traceability of 10 kV Low-Voltage Excited Two-Stage Voltage Transformer

2017 ◽  
Vol 66 (6) ◽  
pp. 1405-1410 ◽  
Author(s):  
Huanghui Zhang ◽  
Haiming Shao ◽  
Jiafu Wang ◽  
Wei Wang ◽  
Feipeng Lin ◽  
...  
Keyword(s):  
Low Voltage ◽  
Voltage Transformer ◽  
Two Stage ◽  
Voltage Ratio

Measure Characteristic of UHV Power Frequency Voltage Ratio Standard

2011 ◽  
Vol 354-355 ◽  
pp. 1210-1215
Author(s):  
Feng Zhou ◽  
Min Lei ◽  
Xiao Dong Yin ◽  
Shu Han Zhang
Keyword(s):  
Measuring Method ◽  
Voltage Measurement ◽  
Voltage Transformer ◽  
Ratio Measurement ◽  
Measurement Traceability ◽  
Voltage Ratio ◽  
Voltage Coefficient ◽  
National Power ◽  
Power Frequency ◽  
Better Than

In order to meet the urgent needs of voltage measurement traceability and transfer in the construction of ultra-high voltage power grid, 1000kV series standard voltage transformer is developed as the standard instrument, and then its measurement characteristics is tested. According to the theory and construction of the series power frequency voltage ratio standard, semi-insulating transformer voltage summation is proposed to make the voltage ratio measurement of SSTV whose accuracy can reach the 0.02 level trace to the source of national power frequency ratio standard of 500kV successfully. The compatibility is better than compared to traditional voltage coefficient measuring method.

A Design of Circuit and its Application of the Power Frequency Voltage Linear Superposition Method

2012 ◽  
Vol 220-223 ◽  
pp. 1564-1572
Author(s):  
Qiang Song ◽  
Feng Pan
Keyword(s):  
Measuring Circuit ◽  
Superposition Method ◽  
Linear Network ◽  
Voltage Transformer ◽  
Linear Superposition ◽  
Voltage Ratio ◽  
Voltage Coefficient ◽  
In Series ◽  
Power Frequency ◽  
Calibration Techniques

In order to improve the power frequency voltage ratio standard calibration techniques to meet the application of UHV power grid，a measuring circuit based on power frequency voltage linear superposition method was proposed. A three-port network was fromed by connecting two shielding voltage transformer with the same rated voltage ratio in series. The voltage coefficient of a voltage transformer was tested by double voltage method based on the proportionality and superposition of the linear network. The measuring circuit based on power frequency voltage linear superposition method can prevent the shielding error of the voltage transformer during the mearurment, making it used in voltage ratio standard self-calibration system with higher voltage and precision. The test has proved the feasibility and accuracy of circuit of power frequency voltage linear superposition method.

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