| 摘要 |
An electrical assembly for use in a power transmission network such as a high voltage DC network (HVDC), where the electrical assembly comprises a converter 32 including: a first terminal; and a second terminal for connection to an electrical network 40, where the first terminal is a DC terminal; a DC power transmission medium 38; a circuit interruption device connected to the DC power transmission medium 38; the circuit interruption device including at least one switching element and an energy absorbing element (which may be a non-linear resistor or a surge arrestor), the switching element of the circuit interruption device can divert a flow of current in the DC power transmission medium 38 through the energy absorption element 64 in order to reduce the flow of current in the DC power transmission medium 38, and a converter control unit programmed to operate the converter 32 in a leakage reduction mode to control a voltage across the energy absorption element 64 to reduce a leakage current flowing in the DC transmission medium 38 subsequent to the reduction of the flow of current in the DC power transmission medium 38 by the switching of the or each switching element of the circuit interruption device to divert the flow of current in the DC power transmission medium 38 through the energy absorption element 64. |
