Calculation Method of Increasable and Decreasable Reactive Power for AVC Region-Province Coordination Gate
Region-province coordination control under the hierarchical scheduling mode is closely related with the grid voltage stability.The real-time control precision is affected by the increasable and decreasable reactive power of the region-province coordination gate.In fact,the calculation consists of two problems:the first one is how to define the coordination gate and form the coordination zone; the second one is how to calculate the increasable and decreasable reactive power.For the first problem,coordination zones are automatically formed based on the topology searching in order to solve the difficult zone division problem,which occurs under the "big rings take the small ones" operation mode; for the second problem,realtime calculation is made for increasable and decreasable reactive power based on sensitivity,and dimension decreasing process is performed by grouping approach within each coordination zone,which guarantees the feasibility of engineering applications.Finally,a real case has been researched to verify the validity of the proposed method.
automatic voltage controlcoordination voltage controlcoordination zonesensitivity
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万方数据
维普
