Research And Design Of Distribution Network Automation In New Urban Area Shenyang

With the rapid development of national economy, have put forward higher requirements on the distribution network economic operation index and the distribution network power supply quality. With the pace of transformation of Xinchengzi District of Shenyang city distribution network power supply reliability of the regional travel, 10 kV voltage level of distribution network has been further improved. On the other hand, the complexity of the network has increased, the construction of distribution automation system and perfect further to create favorable conditions for improving the technical and economic indicators of distribution network operation.Feeder automation to improve the quality of power supply and improve the power supply reliability and energy loss reduction, plays a very important role, is one of the important contents of the distribution automation. With the steady progress of China’s urban and rural distribution network reconstruction work, the research work of feeder automation system is particularly important. Combined with the engineering practice, according to the structure characteristics of the network connection mode and feeder and main electrical switchgear, carries on the detailed analysis of the mode of feeder automation is typical, and finally puts forward some solutions by the main feeder fault combination. The scheme based on sub station control mode of communication, to local control mode without communication as the main combination, make the reliability of feeder automation system has been further improved. In order to after a fault timely and accurate positioning of the fault area to isolate the rapid restoration of power supply to the power failure area, feeder automation system should also have the distribution network fault location, isolation and restoration system of three functions. Direct algorithm for fault location is the most traditional feeder lines as the main research object, because the algorithm of fault location by matrix operation, so the calculation speed is slow, and the problem of feeder terminal fault location are not addressed. In order to avoid these defects, this paper puts forward the research object of the distribution network fault location algorithm is based on nodes. Having a plurality of power network in parallel operation, only assumes that a positive direction can solve the fault location problem, is conducive to the realization of fast fault location.According to the specific situation of the distribution network of Xinchengzi District of Shenyang City, the design of distribution automation system in the area, the design of the system is composed of feeder automation system, supervisory control and data acquisition system, power distribution monitoring system, automatic fault processing system. The comprehensive utilization of various testing information, real-time monitoring, fault on the distribution system of the automatic processing and the rapid restoration of power supply and other functions.