Engineering calculation of single-phase grounding capacitance current in 10kV distribution network The neutral point of 10kV distribution network adopts small resistance grounding or arc suppression coil grounding. The key issue is whether the calculation of 10kV busbar grounding capacitance current value is correct. This paper briefly introduces the composition of single-phase grounding capacitance current in the small current grounding system in the distribution network, discusses that the capacitance current engineering calculation method is an effective means to judge whether a new engineering project is equipped with a small resistor or arc suppression system, analyzes the algorithm of single-phase grounding capacitance current under different conditions, and analyzes and verifies the engineering calculation method through the example of field measurement of 10kV busbar capacitance current of 110kV substation and comparison with the calculated value. It has high accuracy and can be widely promoted and applied.
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