Study On Black Start Scheme For Shandong Grid By Pumped-Storage Power Plant

In recent years, large-scale blackouts happen occasionally around the world, causing enormous social impact and economic losses. After a blackout, power needs to be restored quickly and reliably. Therefore, it is necessary to develop the black start scheme for power system restoration.In this thesis, a black start scheme of Huangtai power plant in Jinan by Taian pumped-storage power plant is thoroughly studied. The background of the black start problem is introduced comprehensively. Based on the actual conditions, the feasibility of self-start for Taian pumped-storage power plant is studied. With the main technique problems be discussed, the proper qualification and procedure for black start of pumped-storage power plant are proposed. The process of black start is simulated with PACAD/EMTDC. The relative problem during black start including generator self-exciting, over-voltages and starting up electromotor with large capacity are studied in detail. Based on power flow calculation, rationality and reliability operation modes are given. The transient and small-signal stability problems of the power system restoration are analyzed with PSASP (power system analysis software package). The simulation results are verified and the whole black start process is demonstrated with POWERWORLD program. The filed-test and black start scheme of Huangtai power plant in Jinan started by the pumped-storage power plant in Taian are put forward in detail.Furthermore, the proposed methods and experimental data will play an important role in carrying on further field-test and developing a feasible black start scheme for Shandong power system.