A New Method For Direction Determining of Flicker Source In Power Distribution Systems
It is very important for both the utility and the customers to find the flicker source in order to keep the level of flicker in the network as low as possible,before the flicker propagates widely in the network.The purpose of this paper is to describe a new direction determining method to a flicker source in power distribution systems.The proposed method allows us to detect voltage flicker and locate flicker source from upstream or downstream when measurement transients are present in the recorded data from installations.S-transform is applied for signal processing first to extract the features of voltage fluctuation and get the instantaneous voltage and current vector.Then,with the latter,tracking of impedance parameters are realized during the voltage fluctuation.Finally,by analyzing the relationship between voltage fluctuation and the change of system impedance parameters from upstream and load parameters from downstream,the criterion for determining the direction to a flicker source is established.The methods have been validated by a simulation in power distribution systems.
flicker source direction determining S-transform power distribution systems
Ganyun LV Yuanyuan Jin
Department of Electric Power Engineering, Nanjing Institute of Technology1＃ Jinhong Road, Nanjing, China 21116
国内会议
北京
英文
1-4
2014-08-21（万方平台首次上网日期，不代表论文的发表时间）