董晓刚

摘要：随着电力体制改革的不断深入，电力市场化运营逐步完善，电力营销工作客观地要求电能计量更加准确可靠，才能保证电力系统安全、经济、可靠运行，才能有优质、方便、规范、真诚的电力营销，形成良好的企业信誉和形象。因此保证电能计量正常运行，准确、合理计量，是计量工作的重要环节。本文侧重分析如何针对高压电网结构来选择计量装置的接线方式和选择正确的计量方式、高压电能计量装置正确计量应满足的条件以及在线检查电能计量装置的接线的方法。

关键词： 计量装置接线方式合理性正确性

中图分类号： TM933.4文献标识码：A文章编号：

Abstract: along with the power system reform, electricity market operation has been improved gradually, and the power marketing objective request more accurate and reliable electric power measure, to ensure the safety of the electricity system, economic and reliable operation, can have high quality and convenient, standard and sincere electric power marketing, formed a good reputation and image. Thus ensure the normal operation of electric power measure, accurate and reasonable measurement, is the important link of the measurement work. The paper focuses on analyzing how to aim at high voltage grid structure to choose the metering device of the connection mode and choose the correct measurement methods, high voltage measurement device right should satisfy the measurement terms and conditions of the online check the wiring of electric energy metering device of the method.

Keywords: measurement device wiring way rationality correctness

1、高压电能计量装置接线合理性的分析

伴随着高压电网结构的快速发展和用户负载性质的变化，中性点接地电流对高压电能计量装置结果准确性的影响已达到不可忽视的程度。电力系统的中性点接地方式是一个比较复杂的技术问题，究竟采用那种接地方式，要根据整个电力系统的技术参数确定。并且，电能计量装置的接线方式也应与其相适应，这样才能保证计量装置的合理、准确计量。可见，如何针对高压电网结构来选择计量装置的接线方式和选择正确的计量方式更是至关重要的。一般来讲，220kV及以上的电力系统均为非中性点绝缘系统（直接接地、低电阻接地、消弧线圈接地），而3-66kV的电力系统则多为中性点绝缘系统。

1.1高压计量电能表的选型

电能表的接线是指电能表连同测量用的互感器与被测电路间的连接关系。……