配电网中电压波动和闪变的分析与检测

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1、·…………………….……………….…………………山东农业大学毕业论文配电网中电压波动和闪变的分析与检测院部机械与电子工程学院专业班级电气班届次学生姓名学号指导教师年月日装订线……………….…….………….………….………目录摘要IAbstractII1电压波动与闪变的背景及研究现状11.1研究的背景11.2电压波动与闪变检测技术的研究现状22电压波动与闪变的定义及特性指标22.1电压波动与闪变的概念22.1.1电压波动22.1.2闪变42.2电压波动与闪变的特征量42.2.1闪变觉察率F(%)与瞬时闪变视感度S(t

2、)42.2.2视感度系数K(f)62.2.3灯一眼一脑环节的传递函数72.2.4短时间闪变水平值Pst82.2.5长时间闪变水平值Plt83闪变的发生和影响及其危害93.1闪变的发生和影响93.2电压闪变的主要来源93.3闪变的危害104电压波动和闪变的抑制与检测114.1电压波动与闪变的抑制114.1.1提高供电能力114.1.2改善用电设备特性114.1.3补偿装置114.2检测方法分析124.2.1平方解调检波法124.2.2全波整流检波法134.2.3半波有效值检波法134.2.4小波变换144.2.5Te

3、ager能量算子检波法154.2.6Hilbert检波法165IEC闪变仪的仿真165.1仿真的介绍165.2仿真结果185.3仿真结果分析215.4IEC闪变仪的数字化实现226总结与展望22参考文献23致谢24iiContentsAbstractII1Researchbackgroundandstatus11.1Researchbackground11.2Researchstatusofvoltagefluctuationandflickerdetection22Definitionsandbasicconce

4、pts22.1DefinitionofvoltagefluctuationsandVoltageflicker22.1.1Definitionofvoltagefluctuations22.1.2Voltageflicker42.2Featurequantityofvoltagefluctuationsandflicker42.2.1Flickersensationrateandinstantaneousflickersensationlevel42.2.2Frequencycharacteristiccoeffi

5、cientofsensationlevelK(f)62.2.3Thetransferfunctionoflamp-eye-brain72.2.4Short-termseverityPst82.2.5Long-ternsseverityPlt83HarmandinfluenceofVoltageFluctuationandFlicker93.1InfluenceofVoltageFluctuationandFlicke93.2SourceofVoltageFluctuationandFlicker93.3Harmof

6、VoltageFluctuationandFlicker104SuppressionanddetectionofVoltageFluctuationandFlicker114.1Increasepowersupplycapacity114.1.1Increasepowersupplycapacity114.1.2Improvingcharacteristicsofelectricalequipment114.1.3Compensationdevice114.2OverviewoftheVoltageFluctuat

7、ionandFlickerDetectionMethod124.2.1Squaredetectionmethod144.2.2Rectifierdetectionmethod134.2.3RMSdetectormethod154.2.4WaveletTransform164.2.5Teagerdetectionmethod154.2.6Hilberttransformdetectionmethod165IECflickermeteremulation165.1Introductionofthesimulation1

8、65.2Resultsoftnesimulation185.3Analysisofsimulationresults215.4ThedigitalrealizationofIECflickermeter226Summaryandprospects22References23Acknowledgment24ii配电网中电压波动和闪变的检测与分析（山东农业大学机