新型高压电能表的研究

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。

STUDY OF NEW-STYLE KILOWATT-HOUR METER IN HIGH-VOLTAGE

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.