There are the limitations of homology method and modal method during equivalent simplification of external equivalent system by dynamic equivalence,that is,the structure and parameters of the external system under various operating conditions should be known. For the part or all of generator parameters excitation and governing speed parameters of the small and medium - sized hydroelectric generating group with centralized access to the grid are unknown,the dynamic response signals of voltage and current in high - voltage side of substation after major disturbances are extracted,and based on FOXPRO platform, the automatic analysis and calculation of continuous variable - parameters is realized combined with PSASP,which makes the online hydroelectric generating group be equivalent as a unit,and accurately identifies its relevant parameters. Finally, the simulation of a small hydroelectric generating group in Sichuan power grid is carried out,and the test results show that the equivalent method is practical and feasible with a certain robustness.
参考文献
相似文献
引证文献
引用本文
魏巍;丁理杰;史华勃;滕予非.基于变电站线路出口信息的小水电群等值及参数辨识研究[J].四川电力技术,2013,36(5):20-24. .[J]. SICHUAN ELECTRIC POWER TECHNOLOGY,2013,36(5):20-24.