Title :
Tuning balance method of partial discharge detection-SFBM
Author :
Gang, Liu ; Xingdong, Fang ; Demin, Tu
Author_Institution :
Technol. Center, HiSense Group, Qingdao, China
Abstract :
Input circuits of the general balance method for partial discharge (PD) measurement are two parallel circuits of resistance and capacitance. There are many disadvantages with this measuring circuit and it is difficult to spread its use into the HV and UHV domain. The measurement principle of SFBM with input circuits of inductance and capacitance for PD detection is analyzed in detail in this paper. It is shown by a simulated test that under the fixed center frequency of measurement, innumerable balance points exist in the adjustable range of tuned capacitors. The pivotal part of SFBM for PDs is the use of a narrow wide band filter and amplifier (NWBFA). The rejection of interference is decided by the NWBFA
Keywords :
high-voltage techniques; insulation testing; partial discharge measurement; power apparatus; SFBM; amplifier; capacitance; fixed center frequency; general balance method; input circuits; interference; narrow wide band filter; parallel circuits; partial discharge detection; resistance; simulated test; tuned capacitors; tuning balance method; Capacitance measurement; Capacitors; Circuit optimization; Circuit simulation; Circuit testing; Electrical resistance measurement; Frequency measurement; Inductance measurement; Partial discharge measurement; Partial discharges;
Conference_Titel :
Properties and Applications of Dielectric Materials, 2000. Proceedings of the 6th International Conference on
Conference_Location :
Xi´an
Print_ISBN :
0-7803-5459-1
DOI :
10.1109/ICPADM.2000.876122
