摘要
介绍了一种新型高压电能表。该表引入光电式电流互感器元件,自行设计悬浮式电源,解决了高压侧供电问题;采用高速、低功耗微处理器,实现高端电能计量,克服了传统高压电能表普遍存在的防窃电效果差的缺点;在软件上应用准同步算法,较好地解决了周期性畸变波形下电能的准确计量问题。试验表明,该电能表准确度优于0.5％,具有良好的实用价值。
This article introduces a new style of kilowatt-hour meter of high voltage which adopts optoelectronic current transformer. The suspended power source is designed to accommodate the power supply on high voltage site. High-speed and low-power consumption MPU is used to achieve electric energy measuring on high voltage site. Hence it can prevent the electricity-theft activities efficiently. The quasi-synchronous sampling arithmetic is applied to solve the problem of electric energy measuring on periodicity aberrance wave. The experiment indicates that the proposed kilowatt-hour meter is practical and its accuracy is high.
出处
《电力系统自动化》
EI
CSCD
北大核心
2004年第9期88-91,共4页
Automation of Electric Power Systems
关键词
电能表
光电式电流互感器
电源
准同步算法
kilowatt-hour meter
optoelectronic current transformer
power supply
quasi-synchronous sampling arithmetic
