Offshore wind plant medium voltage system grounding circuit

The utility model belongs to the technical field of distribution automation, and provides an offshore wind plant medium voltage system grounding circuit, which comprises a grounding transformer T1, a resistor Rn and a controllable reactor Ln, the neutral point of the grounding transformer is connected with the normally open end of a contactor K1, the common end of the contactor K1 is grounded through the resistor Rn, and the controllable reactor Ln is connected with the normally open end of the contactor K1. And a controllable reactor Ln is connected in parallel between the normally open end of the contactor K1 and the ground. According to the technical scheme, the problem of poor reliability of the grounding circuit of the offshore wind plant in the prior art is solved. 本实用新型属于配电自动化技术领域，提出了一种海上风电场中压系统接地电路，包括包括接地变压器T1、电阻Rn和可控电抗器Ln，所述接地变压器他的中性点与接触器K1的常开端连接，所述接触器K1的公共端通过电阻Rn接地，所述接触器K1的常开端与地之间并联有可控电抗器Ln。通过上述技术方案，解决了现有技术中海上风电场接地电路可靠性差的问题。