Research of On-Line Monitoring System for Malfunction in Distribution Network

Energy is the basis of survival and development for human society. AS the second form of energy, there are several advantages of it, such as simple. convenient, and reliabity. And it is the major energy in our modern society. Adequate and reliable electric power is the basic premise for rapid economic development and normal operation of the community. With the accelerated development of social economy, microelectronics, computers, power electronics and a variety of large-scale electrical equipment are put into use, which cause voltage fluctuations, flicker and negative sequence components. It makes power quality deterioration seriously and endangers the safety and economic operation of power system. We achieved power-line monitoring to establish communication links. And then we realized intelligence system for data acquisition, transmission, and comprehensive analysis for statistics. It prompted some countries to begin to explore the research of remote monitoring based network for sparing and making full use of network resources. And it is considered that the various parts of the power system are linked. Therefore, the authors conducted a lot of research and practice for the data collection and comprehensive analysis of LAN network. We use power line carrier technology to analyses statistical data in the network coverage area. Wire communication is successful to rate up to 100kb/s with debugging constantly. Its characteristics are not need to structure the network again. As long as wires exist, the data can be transmitted through LAN. So it will reduce the pressure of internet without reduce the rate of transmission. In long-distance transmission, we will still use internet to transmit the data.