Simulation Study of Multi-dimensional Information Change Rule of Electric Energy under Single-phase Grounding Fault of Distribution Network and Its Verification

Based on Matlab and 10 kV distribution network single-phase grounding fault simulation test platform, this paper carried out a typical single-phase grounding fault simulation and experimental verification analysis under different fault conditions. In terms of simulation, this paper analyzes the impact of single-phase grounding fault on the voltage, current and power at the end of the distribution terminal bus when it occurs in A-phase, B-A-phasend C-phase. In terms of experiment, the test on the impact of single-phase grounding fault on electrical energy information is carried out and measured the impact of single-phase grounding fault on electrical energy information in different grounding resistor sizes (2000 Ω, 250 Ω), different duration time (0.02 s, 0.06 s, 0.1 s, 0.2 s) and different phases (0°, 90°, 270°) of the voltage, current and power at the end of the bus.