Self-excited measurment of CVT and its error analysis

Author

Li Tao ; Du Xiao-ping ; Zhu Jian-sheng ; Liu Huang-guang ; Li Jing-hua ; Niu Qing-song

Author_Institution

Linyi Power Supply Co. of Linyi, Linyi, China

fYear

2008

fDate

10-13 Dec. 2008

Firstpage

1

Lastpage

4

Abstract

Measuring partial-voltage capacitance and tan delta value of superposition capactive voltage transformer(CVT) by CVT self-excited method is discussed. This paper introduces how to perform test on CVT with the frequency-conversion bridge, and what we should pay attention to in the test. The feasibility and necessity of self-excitation measurement for superposition CVT are analyzed by experiment. Also, the main factors that affect self-excitation measurement are discussed. On this basis, some problems worth attention are indicated concerning CVT operation, maintenance, and test. Test data make it clear that improving self-excited method adapts to on-site test.

Keywords

capacitance measurement; error analysis; potential transformers; transformer testing; voltage measurement; CVT; error analysis; frequency-conversion bridge; partial-voltage capacitance; self-excited measurement; superposition capactive voltage transformer; Automatic testing; Bridge circuits; Capacitance measurement; Circuit testing; Dielectric losses; Dielectric measurements; Error analysis; Frequency; Power measurement; Voltage transformers; Capactive Voltage Transformer (CVT); dielectric loss (tan δ); error analysis; partial-voltage capacitance; self-excited method;

fLanguage

English

Publisher

ieee

Conference_Titel

Electricity Distribution, 2008. CICED 2008. China International Conference on

Conference_Location

Guangzhou

Print_ISBN

978-1-4244-3373-5

Electronic_ISBN

978-1-4244-3372-8

Type

conf

DOI

10.1109/CICED.2008.5211749

Filename

5211749