Title: Intercomparison and Uncertainty Evaluation of 1000kV DC High-Voltage Divider
Abstract:Along with overall implementation of the construction of UHVDC power transmission projects in China,original ±500 kV voltage grade for HVDC power transmission is upgraded to ±800 kV for UHVDC power tr...Along with overall implementation of the construction of UHVDC power transmission projects in China,original ±500 kV voltage grade for HVDC power transmission is upgraded to ±800 kV for UHVDC power transmission.There is also a demand in the future to further upgrade the transmission voltage level to ±1 000 kV or above.To make the working voltage of existing UHVDC voltage generator meeting the requirement of the development of UHVDC power transmission technology,the measurement system of 1 000 kV DC high voltage divider manufactured by the National Measurement Institute,Australia was taken as the standard DC high voltage divider,and using voltage ratio measurement method an intercomparison test with the indoor ±1 800 kV DC high voltage divider was performed and the voltage ratio of the 1 800 kV divider was measured at voltages up to 1 000 kV with the 1 000 kV measurement system as the reference.Through comprehensive evaluation on influencing components on measurement uncertainty,it was shown that the change rate of the dividing ratio of the indoor ±1 800 kV DC high voltage divider at the voltage up to 1 000 kV was lower than 0.5%,thus it can meet the requirements of the research on UHVDC insulation technology and the detection of products related to UHVDC power transmission equipments.Read More
Publication Year: 2012
Publication Date: 2012-01-01
Language: en
Type: article
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Cited By Count: 3
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