Error Analysis and Transformation of LV Three-phase Energy Metering Device in the Suburb of Wuzhou

The accuracy of energy metering device directly concerns the economic benefit of the power supplier and the customer.Therefore,the composite error of the device shall be minimized in order to charge in a fair and reasonable manner.There are over 20,000 households in the suburb of Wuzhou.Some energy metering devices,especially three-phase ones are not so accurate due to nonstandard design,configuration,type selection and assembly,resulting in economic loss of electric power enterprises.Therefore,it is important to find out the cause and improve metering devices.This article studies the main reasons of error and proposes measures for improvement by taking LV metering points in the suburb of Wuzhou as example.