The Based On Transient Component Of Fault Location Distribution Network

This paper first on distribution network fault location method of domestic and foreign research status and the advantages and disadvantages are analyzed, accurate positioning of distribution network fault types and fault classification problems were studied by adjusting the fault parameters and improved localization algorithm, to improve the positioning precision of the discussion and analysis. Finally, it puts forward a type traveling wave fault location method based on as the main location of fault location in distribution network.First, a detailed analysis of the distribution network fault transient traveling wave process, through the characteristics of transient current traveling wave, forward traveling wave ranging method is independent of the fault type, fault location and line operation mode. Through the analysis of the principle of traveling wave, the sampling time of selection is put forward to analyze the, enhance the gun fault rate, greatly reducing the amount of computation, for subs equent computer processing provide a train of thought, enhances the feasibility of traveling wave fault location. Because of the three-phase line coupling action makes the analysis of the fault current and transient signal can’t good to be used to. Therefo re, the phase mode transformation way, three-phase current signal decomposition, making mutual influence with each other, ultimately selected from the alpha component of the earth to locate the fault signal is extracted from. Get the colleague who contains the fault information. Reference wavelet analysis the signal processing tool, because of its superiority in fault detection, the IT application in distribution network positioning, through the signal’s wavelet multilevel decomposition, traveling wave can be obtained the arrival time, by using the wavelet analysis module maximum value and get to the line wave arrived at the exact moment. Finally, the fault point of distribution network, through a lot of analysis proved that the method can implement the accu rate positioning of fault traveling wave, the fault types can reach a certain precision to meet the positioning requirements.The distribution network fault location methods are explored, through analysis of the failure process, principle of fault traveling wave is obtained, by a traveling wave type method of fault of distribution network fault location. The results meet the certain degree of accuracy, completes the fault location.