A novel measurement device of capacitive current for ineffectively earthed distribution systems

Author

Zhanglei, Liu ; Xiangjun, Zeng ; Wangyi, Jin ; Wentao, Yi ; Yao, Xu

Author_Institution

Sch. of Electr.&Infomation Eng., Changsha Univ. of Sci. & Technol., Changsha

fYear

2008

fDate

21-24 April 2008

Firstpage

1

Lastpage

4

Abstract

A. novel resonance measurement method of capacitance current is presented for distribution systems in the paper. The ground capacitance and ground capacitance current can be calculated using the two resonance frequencies. Based on MCU and FPGA, hardware is designed and software is programmed, the prototype for the capacitance and capacitive current measuring is developed. It is tested in a dynamic power system and real power system. Test results show that the prototype eliminates the voltage transformer leakage impedance influence, and the measurement method is simple, convenient and precise.

Keywords

earthing; field programmable analogue arrays; potential transformers; power distribution protection; FPGA; distribution network; distribution systems; dynamic power system; ground capacitance current; real power system; resonance measurement method; voltage transformer leakage impedance; Capacitance measurement; Current measurement; Field programmable gate arrays; Hardware; Power system dynamics; Power system measurements; Resonance; Resonant frequency; Software design; Software prototyping; Capacitance current; Distribution network; Resonance measurement; Zero sequence voltage transformer;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Technology, 2008. ICIT 2008. IEEE International Conference on

Conference_Location

Chengdu

Print_ISBN

978-1-4244-1705-6

Electronic_ISBN

978-1-4244-1706-3

Type

conf

DOI

10.1109/ICIT.2008.4608625

Filename

4608625