STATCOM (static synchronous compensator) control method for voltage adjusting of wind farm and network nodes

The invention discloses a STATCOM (static synchronous compensator) control method for voltage adjusting of a wind farm and network nodes. The method specifically comprises the following steps of (1) when a power grid is provided with a plurality of STATCOMs, separating the adjusting range of each STATCOM; (2) performing passive adjusting on local network nodes in a single STATCOM administrative area after area separating, so as to furthest guarantee that node voltage in the area does not exceed the limit; (3) finding the optimum voltage setting value of the STATCOMs, so as to enable the average fluctuating rate of the voltage of each network node to be minimum. Compared with the traditional voltage adjusting strategy for access points of the wind farm, the method has the advantages that the voltage fluctuating of all network nodes can be reduced, the voltage level of the network nodes is improved, and the purpose of improving the network running quality is realized; the characteristic of quick response of the STATCOMs is effectively utilized, the robustness and security of the power grid are improved, and the purpose of adjusting power grid voltage fluctuating and wind farm exit side fluctuating is realized.