Control method and control system for wind power participating frequency modulation of electric power system
A technology of power system and control method, which is applied in the control method and system field of wind power participating in power system frequency modulation, and can solve problems such as inability to provide sufficient support, reduce the service life of wind turbines, and inability to realize overspeed control, so as to improve the dynamic frequency Effects of responsiveness, enhanced inertia, and reduced steady-state frequency deviation
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[0073] The simulation study adopts a classic 4-machine 2-area system, such as Figure 6 shown. The system contains 11 nodes, and the wind farm and battery energy storage system with rotor kinetic energy control are respectively integrated into B through a transformer. 2 On the No. bus, the configuration capacity of the battery energy storage system is 30MVA, the wind field is 200MW (2MW×100), and the wind speed is constant at 8m / s. G 1 , G 2 , G 3 Each has a capacity of 800MW and is equipped with a governor and a power system stabilizer. System load L 1 , L 2 The sizes are 1600MW and 900MW respectively; L 0 is the disturbance load. The entire simulation process lasts for 15s, and the system load is disturbed at 5s. The frequency response characteristics of no-frequency control, rotor kinetic energy control, battery energy storage system and their combined control are compared by simulation.
[0074] When the system load is disturbed by 5% at the time of 5s, the frequ...
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