Energy Metering Device Wiring Intelligent Simulation Training Systems And Applications

Electric energy metering is a very important link of power system's generation,transmission and supply. Workers who do electric energy metering must have relatively high professional quality and work skills to grasp it. The wiring training of traditional and electrical program controlled energy meter can't meet the demands in the training of electrical energy metering device wiring check. So it is very important to do the research and development of electrical energy metering device wiring training system and provid a simulation platform for metrological personnel.The electrical energy metering device wiring training system studied in the paper is a simulation device which can simulate the field operation. It can simulate every error of metering device wiring and judge various common fouls of the system conveniently and instantly, like second short circuit,open circuit,reversed polarity of CT, PT phase failure, voltage and current phase dislocation of the electric energy meter, current in and out inversed connection, and so on. Many type of wirings can be simulated in this system, such as three-phase three-wire electrical energy meter in high-voltage, three-phase four-wire electrical energy meter in high-voltage, three-phase three-wire electrical energy meter in lower-voltage, CT secondary wiring, PT secondary wiring, etc.If wrong wiring is set in this simulation system, the computer will combine every elements to compute each voltage and current's phase and numerical relations, which can get various wiring diagram, vectorgram, power expression and adjusted coefficient. The intelligent simulation system of electric energy metering device wiring designed by the method has powerful and flexible software function that can realize the simulation of all kinds of wiring. And almost every wrong wiring in fielding are covered in the simulation system.The feasibility of intelligent simulation system of electric energy metering device wiring was proved in the paper by theoretical method. A difference is made between three-phase three-wire circus and three-phase four-wire circus and the data measured for them was studied respectively. Convenient and effective analysis and judgment method for all kinds of wrong wiring of electric energy metering device was put forward and detailed description had been made by examples.