浙江电力
浙江電力
절강전력
Zhejiang Electric Power
2015年
9期
1-5
,共5页
姚力%胡瑛俊%吴剑芳%柳圆成
姚力%鬍瑛俊%吳劍芳%柳圓成
요력%호영준%오검방%류원성
数字化电能表%频谱泄露%采样定理%非整周期采样%电能计量%实时频率
數字化電能錶%頻譜洩露%採樣定理%非整週期採樣%電能計量%實時頻率
수자화전능표%빈보설로%채양정리%비정주기채양%전능계량%실시빈솔
digital electric energy meter%spectrum leakage%sampling theorem%non-integer-period sam-pling%energy metering%real-time frequency
随着智能变电站的发展，数字化电能表的应用越来越广泛。由于电网频率波动等原因，电压、电流信号的非整周期采样引入的频谱泄露误差较大，影响电能量的准确计量。分析了数字化电能表电能计量过程中引入的频谱泄露误差，采用过零检测计算实时频率，提出非整周期采样误差补偿方法。通过Matlab仿真验证其补偿效果，仿真数据表明该方法简单、有效，为电能量的准确计量提供了依据。
隨著智能變電站的髮展，數字化電能錶的應用越來越廣汎。由于電網頻率波動等原因，電壓、電流信號的非整週期採樣引入的頻譜洩露誤差較大，影響電能量的準確計量。分析瞭數字化電能錶電能計量過程中引入的頻譜洩露誤差，採用過零檢測計算實時頻率，提齣非整週期採樣誤差補償方法。通過Matlab倣真驗證其補償效果，倣真數據錶明該方法簡單、有效，為電能量的準確計量提供瞭依據。
수착지능변전참적발전，수자화전능표적응용월래월엄범。유우전망빈솔파동등원인，전압、전류신호적비정주기채양인입적빈보설로오차교대，영향전능량적준학계량。분석료수자화전능표전능계량과정중인입적빈보설로오차，채용과령검측계산실시빈솔，제출비정주기채양오차보상방법。통과Matlab방진험증기보상효과，방진수거표명해방법간단、유효，위전능량적준학계량제공료의거。
With the development of smart substation, digital electric energy meter is widely applied. Because of the grid frequency fluctuation and other reasons, the spectrum leakage error brought by current and voltage non-integer period sampling is much bigger, affecting the accuracy of energy metering. This paper mainly ana-lyzes the spectrum leakage error in the process of energy metering, which uses zero-crossing check to calculate the real-time frequency and proposes the method of non-integer period sampling error compensation. Then Mat-lab simulation is used to test the compensation effect, and the simulation data shows that the method is simple, effective and provides basis for metering accuracy of electric energy meter.
