Application Of Petri Net Theory In Fault Diagnosis For10kV Rural Electrical Grid

With the rapid development of social economy, the living level of people unceasingenhancement. The modern society puts forward higher requirements to the power system,high reliability and good power quality guarantee. As a result, the distribution automationsystem-DAS is inevitable development of distribution network. If the distribution line faultoccurs, need to quickly diagnosis the fault(determine the fault line, equipment failure, linedisconnect switch, which is to determine the fault area), fault isolation and restoration ofpower supply, in order to reduce the outage time, reduce the loss.Under the background, the research of distribution network fault diagnosis problem. Theultimate goal is to find a better method of fault diagnosis, when the distribution network fault,staff can quickly and accurately find the fault line, isolate the fault line and sent relevantpersonnel to handle the fault site. It is important significance to decrease users outage time,reduce power area, improve the distribution network power supply quality, improve theservice level of the grid, increase operation efficiency and economic benefit.At present, a large number of fault diagnosis methods have emerged at domestic andforeign. For example: Expert system, Neural network, Bayesian theory, Petri net theory ect.The article on10kV agricultural distribution line, put forward the theory of Petri nets on ruralpower distribution network line fault diagnosis. This paper mainly introduces the powersystem, fault diagnosis system. At the end of the discussion on the Petri net theory, throughthe practical application shows the method can reduce diagnosis time, eliminate the fault assoon as possible.