Full-compensation arc suppression coil grounding residual current detection method and system

• Main Authors: LI YIZHUO, QU SONGYUN, ZHANG JUAN, LU XIN, ZHAO YINGLU, YANG DEHAO, QI CHAO, GAO BO
• Format: Patent
• Language: Chinese; English
• Published: 02.11.2021
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERATION; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention relates to the technical field of electric power, in particular to a full-compensation arc suppression coil grounding residual current detection method and system, and the method comprises the following steps: firstly, measuring a grounding capacitance value before a grounding fault occurs; controlling grounding residual current and a single-phase inverter in the grounding fault; and finally, after the grounding fault is recovered, allowing an arc suppression coil and the single-phase inverter to quit operation. According to the full-compensation arc suppression coil grounding residual current detection method and system provided by the invention, the residual current can be quickly and accurately compensated, and the grounding residual current is limited in a relatively small range and even completely eliminated, so that the arc grounding overvoltage is effectively inhibited, the safe operation of equipment is guaranteed, the economic loss caused by power supply interruption and power accidents