单相电能表采样回路故障的研究

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	英文篇名：Research on the Fault of the Sampling Circuit of Single-phase Power Meter 作者：明晋平 ; 周伟光 ; 郑哲 ; 张宇航 关键词：电能表 ; 采样回路 ; 采样故障 ; 异常计量 英文关键词：Power meter;;Sampling circuit;;Sampling fault;;Measurement fault 中文刊名：ZYQB 英文刊名：China Instrumentation 机构：宁波三星医疗电气股份有限公司; 出版日期：2019-02-25 出版单位：中国仪器仪表 年：2019 期：No.335 语种：中文; 页：ZYQB201902019 页数：3 CN：02 ISSN：11-3359/TH 分类号：40-42

摘要

电能表现场运行过程中,采样线束焊点脱落和断线故障时有发生,导致电能表异常计量,给电力用户和电网公司造成影响。本文建立了电压和电流采样线断线故障模型,对该故障造成计量异常的机理进行了理论分析,并提出一种改进型的电路设计,可有效改善断线故障引起的计量异常问题。
        During the operation of the electric energy meter, the sampling line harness and the line breakage often happen, resulting in the abnormal metering of the electric energy meter, which has an impact on the power users and Power Grid Corp. In this paper, a fault model of voltage and current sampling loop is established, and the mechanism of abnormal measurement caused by the fault is theoretically analyzed. A new circuit design is proposed, which can effectively improve the metering abnormal problem caused by the broken line fault.

引文

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