The high-voltage watt-hour meter is directly connected to the high-voltage power line, which replaces the traditional high-voltage energy metering device. It has the advantages of high safety, high metering accuracy, energy saving and emission reduction and anti-theft. It has been widely accepted. With the gradual expansion of application scope and quantity, especially the expansion of application environment, the safety problems it may caused should be paid high attention, to effectively ensure high-voltage watt-hour meter which has many advantages plays a greater role in the smart grid construction.
