摘要
由于实验室离线检测的不足,大多数计量器具在实验室校验完投入现场使用后,并不能有效、实时测试电能表误差及监测互感器二次回路工作状态的问题。研制的计量在线监测系统采用分布式同步测量,针对PT单元、CT单元、二次回路、电能表单元进行监测,实现对互感器误差变化趋势在线监测和电能表误差在线监测,对提高电能计量装置的可靠性和安全运行起到重要作用,为计量误差处理提供了有力的依据。
Due to the inadequacy of offiine test in laboratory, the error of the electric energy meter and the secondary circuit working state of the transformer can＇ t be effectively, timely monitored by most metering equipment after the laboratory test. The system adopts the synchronous measurement of distribution to achieve the on line monitoring on the error changing trend of the transformer and the error of the electric energy meter by means of monitoring on PT unit, CT unit, secondary circuit and electric energy meter unit. The system is useful to improve the reliability of the electric energy metering equipment, guarantee the safety operation and provide a strong foundation for dealing with the metering error.
出处
《自动化与仪器仪表》
2013年第2期145-146,148,共3页
Automation & Instrumentation
关键词
电能计量
在线监测
误差
二次回路
Electric metering
On line monitoring
Error
Secondary circuit
