作者：谢斌盛¹, 游徐洪²

作者单位：1. 广州大学实验中心, 广东 广州 510006;
2. 长沙威胜电子有限公司, 湖南 长沙 410013

关键词：三相电能表; 正相序; 逆相序; 矢量图; 相序检测

摘要：

本文提出了一种新型三相电能表逆相序检测报警电路,简单介绍了其工作原理及组成结构,并辅以矢量图着重从理论上对该电路加以证明,当电能表相序接错时报警,以便及时更正接线错误,保证电能表的正确计量。该报警电路结构简单,所用元器件少:由电容、电阻、发光二极管组成,已被试用于某厂三相电度表中,运行结果表明该电路简洁易行,可靠性高,具有较高的实用价值,可广泛应用于逆相序检测系统中。

Reverse phase sequence detecting circuit for three-phase power meter

XIE Bin-sheng¹, YOU Xu-hong²

1. Guangzhou University Experiment Center, Guangzhou 510006, China;
2. Weisheng Electronics Co. LTD., Changsha 410013, China

Abstract: This paper introduced structure and operating principle of a new kind of alarm circuit which can detect reverse phase sequence connection in three-phase power meter.It mainly expounded the circuit with vector diagrams in theory.When power meter is in reverse-phase-sequence condition,this circuit will alarm to tell operator to correct error connection in time.This guarantees the exact metering of power meter.The circuit,composed of few components such as capacitor,resistance and LED,is very simple.After long period application,the results show that it has distinct practical value and high reliability and can be widely used in reverse-phase-sequence detection.

Keywords: Three-phase power meter; Positive phase sequence; Reverse phase sequence; Arrow diagram; Phase-sequence detection

2006, 32(3): 51-52,77  收稿日期: 2006-1-10;收到修改稿日期: 2006-2-17

基金项目: 

作者简介: 

参考文献

[1] 邱关源.电路(第三版)[M].北京:高等教育出版社,1995.
[2] 张肃文,陆兆熊.高频电子线路(第三版)[M].北京:高等教育出版社,1995.
[3] 邱炳正.交流电能表错误接线百例解析[M].北京:中国计量出版社,1990.
[4] 安立宪,段志彦,等.浅谈电能计量装置运行中存在的问题及改进措施[J].内蒙古电力技术,2005,23(5):45-47.
[5] 张永瑞.电子测量技术基础[M].陕西:西安电子科技大学出版社,2000.
[6] 王效良,马思乐,等.电网相序和缺相监测电路的设计[J].电力系统及其自动化学报,1997,9(3):48-51.
[7] 刘晓文,谭得健.便携式多功能相序及电量测量仪[J].煤炭科学技术,1996,24(9):21-23.