Analysis of Power-Frequency Magnetic Field Effect on Single Phase Electronic Watt-hour Meter
Wang Xiao-don · Electrical Measurement & Instrumentation · 2013
The influence mechanism of power-frequency magnetic field on single phase Watt-hour meter is analyzed. On the basis of meter installation environment, the simulation platform is set up in the laboratory. The power factor test under no-load condition is conducted under the environment of power-frequency magnetic field to find the relationship of Watt-hour meter error to exciting current and power factor angle. The worst conditions of phase and the direction for Watt-hour meter measurement in the environment are determined, and the suggestion that reduce the influence of power-frequency magnetic field on electrical meter measuring accuracy is made.