电能质量分析仪用于连续监测和分析电力线路是否出现干扰，这种干扰可能会中断可靠的能源输送，或者对接入电网的设备造成损坏。电能质量干扰包括电压骤降和骤升、瞬变、谐波失真和电压/电流不平衡等事件。
现代电能质量分析仪设计需要：根据 ANSI C12.20 和 IEC-62053 标准，通过电流和电压感应进行多相电力和收益级电能测量。分析谐波失真等电能质量指标。电源设计、数字 I/O、实时联网和无线通信。

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电能质量分析仪
VoltagesensingPTRDIVAnalog I/ODigital I/OLine A/B/CNeutralVoltagesensorsPTRDIVCurrentsensorsCTRSH5V3.3V+/-12VHall sensorAC/DC power supplyPWM controllereFuseVACShunt referenceOptocouplerLoad switchEnergy storageBattery gauge / monitorEnergy harvestingDC/DC power supplyBuck converterPMICLDOBoost converterPoEeFusePower ORingVoltage monitoringProtectionProtection & filterMeasurement AFEVREFPrecision ADCPrecision ADCAMPVREFAMPIsolated DC/DCAMPAMPTransient recording AFEIsolated DC/DCHigh-speed ADCVREFAMPAMPIsolationIsolationProcessingDSPMCUHMICaptouchLED driverBacklight driverRelay driversControl inputsAmbient light sensorLEDsLEDsWired interfaceESDDACAMPAMPADCMOSFETIsolationUSBRS-232/485ETH PHYWireless interfacePA/LNABluetooth transceiverWiFi transceiverSelf diagnostics/monitoringTemp/humidity sensorSVSWDTClockingFanout bufferClock synthesizerCrystal oscillatorRTCMemoryTerminationDRAMFlashEEPROM