Method and terminal for configuring reactive power capacity of a power grid to which offshore wind power is connected on a large scale

A terminal for configuring reactive power capacity of a power grid to which offshore wind power is connected on a large scale, comprising:

• a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when executing the computer program, the processor performs steps of a method for configuring the reactive power capacity of the power grid to which the offshore wind power is connected on the large scale,
• wherein the method for configuring the reactive power capacity of the power grid to which the offshore wind power is connected on the large scale comprises:
• calculating static voltage stability index of substations in a regional power grid to which the offshore wind power is connected on the large scale and at multiple points, and selecting weak points of static voltage stability based on the static voltage stability index of the substations;
• performing an N-2 fault analysis on each of outgoing lines of the weak points of static voltage stability, calculating relative dynamic voltage drop area index of the weak points of static voltage stability, and selecting candidate reactive power compensation configuration nodes from the weak points of static voltage stability based on the relative dynamic voltage drop area index;
• using a minimum total cost of reactive power compensation devices configured at the candidate reactive power compensation configuration nodes as an objective function, and establishing static voltage stability constraints, voltage stability constraints under faulty state, and other constraints to build a multi-type reactive power optimization configuration model considering large-scale connection of the offshore wind power;
• and
• solving the multi-type reactive power optimization configuration model to obtain an optimal reactive power capacity configuration result.