The Implement Of Power Monitor

Electric Power is widely used in modern society, it's very important to make electric power production to keep up with the steps of the development of market economy. In recent years, the electric power consumers become more and more fastidious about the power quality, and it is necessary to charge different expenses according to different time. So the Multifunctional Electric Power Parameter Monitor is researched.The author introduces the National and Sector standards about electric power quality and electric power metering at first and designs system scheme bases on them, then the author narrates the development of the meter.The author uses the modular design method to design the multifunctional electric power parameter monitor, the meter is divided to several modules such as man-machine interface, main module, signal processing module, sensors module and so on, this paper mainly discusses the hardware and software of the latter two modules. The author introduces the circuit detailedly from theory and practice, and then the software is introduced detailedly with the emphasis on amplitude adjusting, phase adjusting, digital filter and parameter computation, a lot of simulation examples are illustrated.The meter can monitor the electric power parameter, analyze the electric power quality, measure electric power energy in multi-rate, record the fault wave and so on. The model of Multifunctional Electric Power Parameter Monitor had been produced successfully after about two years, it had passed strict test and will became a batch production soon.