Double-feed wind power generating system with energy storage function
A doubly-fed wind power generation and wind power generator technology, which is applied in the directions of AC network load balancing, single-network parallel feeding arrangement, reactive power adjustment/elimination/compensation, etc., can solve output power fluctuations, does not involve power generation equipment and users Control problems such as power dynamic balance of electrical equipment to achieve the effect of improving power quality and enhancing power supply reliability
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[0030] The parameters of doubly-fed wind turbine 1 are set as follows: rated power 1.5MW; rated voltage 690V; stator leakage inductance 0.050p.u.; rotor leakage inductance 0.015p.u.; stator-rotor mutual inductance 2.4p.u.; stator loop resistance 0.024p.u.; The number of pole pairs is 3; the effective value of the grid line voltage is 690V.
[0031] Simulation analysis illustrates two working modes of the present invention: (1) Grid-connected working mode; (2) Independent working mode with load.
[0032] According to the above two working modes, simulation parameter settings:
[0033] 1. Grid-connected working mode
[0034] (1) The wind speed changes within 0-120s. The wind speeds of basic wind, gust wind and gradual wind are 12m / s, 2m / s, and 2m / s respectively; the duration of gust wind is 20s-30s, and the duration of gradual wind is 40s-60s or 90s~110s; random wind surface roughness 0.0005, disturbance range 600m. The grid-connected point power is given as 0.862MW.
[0035...
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