DING TAO, YANG LEI, WANG XIANJUN, et al. Treatment and Analysis on Abnormality of Rated Output Capacity Check of 220 kV CVT. [J]. Power capacitor & reactive power compensation, 2024, 45(3): 72-77.
DING TAO, YANG LEI, WANG XIANJUN, et al. Treatment and Analysis on Abnormality of Rated Output Capacity Check of 220 kV CVT. [J]. Power capacitor & reactive power compensation, 2024, 45(3): 72-77. DOI: 10.14044/j.1674-1757.pcrpc.2024.03.010.
In view of such issues that the rated output capacity of 30 VA of 220 kV capacitor voltage transformer(CVT)is not consistent with the design value of 50 VA
the generation and reason of the problem are introduced. Based on the error theory of the CVT
it is concluded that the accuracy and temperature rise index are strongly related to the rated output capacity of CVT
and the rated output capacity of CVT is checked through the combination of accuracy test and type test. The accuracy test is performed on the CVT one by one
and the product type test of 30 VA CVT is performed in accordance with 50 VA
with temperature rise and accuracy test in particular. The test results show that the 30 VA CVT meets the requirements of 50 VA rated output capacity. Finally
the rated output capacity parameters of the CVT nameplate are updated
and the operation is normal after the operation. This provides a solution for the rated capacity check of the CVT.
关键词
电容式电压互感器额定输出容量负载误差准确度温升
Keywords
capacitor voltage transformerrated output capacityload erroraccuracytemperature rise