Simulation of Low-Current Grounding Faults in Power Systems

The simulation of low-current grounding faults in power systems is a critical procedure for assessing and enhancing system safety and reliability. This study implements a computational model that simulates voltage and current waveforms under two distinct neutral configurations in a 10KV distribution system: ungrounded neutral point and neutral point grounded through an arc suppression coil. The simulation algorithm incorporates power system transient analysis using differential equations to capture fault dynamics, with waveform visualization techniques enabling detailed observation of phase shifts and harmonic distortions. Through analysis of the simulation results - which may include implementing Fast Fourier Transform (FFT) for harmonic analysis and RMS calculation algorithms for magnitude evaluation - we can identify potential risks and operational challenges during grounding fault scenarios. These insights facilitate the development of more effective protection strategies, including relay coordination algorithms and fault detection logic, to prevent and mitigate fault impacts, thereby ensuring stable and efficient power system operation.