Coordinated control of multi-terminal HVDC systems

摘要

Multi-terminal HVDC systems and control methods therefore are disclosed. Methods for controlling multi-terminal HVDC systems having a plurality of converter stations may include receiving a plurality of measurements from a plurality of measurement units disposed on the HVDC system, identifying from the measurements a disruption within the HVDC system, monitoring the measurements to identify a steady-state disrupted condition for the HVDC system, calculating a new set point for at least one of the plurality of converter stations, which new set point may be based on the steady-state disrupted condition and the measurements, and transmitting the new set point to the at least one of the plurality of converter stations. In some examples, the HVDC systems may include an HVDC grid interconnecting the plurality of converter stations and a controller communicatively linked to the plurality of measurement units and the plurality of converter stations.

主权项

1. A method for controlling a multi-terminal HVDC system comprising at least three converter stations interconnected by a plurality of HVDC transmission lines, the method comprising:
receiving a plurality of measurements from a plurality of measurement units disposed within the HVDC system proximate at least two of the at least three converter stations; identifying from the plurality of measurements a disruption within the HVDC system, wherein the disruption comprises at least one of: a fault on, outage of or isolation of one or more of the plurality of HVDC transmission lines or a failure, outage or shutdown of or in one or more of the at least three converter stations; monitoring the plurality of measurements to identify a steady-state disrupted condition for the HVDC system; calculating a new set point for at least one of the at least three converter stations, wherein the new set point is based on the steady-state disrupted condition and the plurality of measurements; and transmitting the new set point to the at least one of the at least three converter stations.