一种计及等效损伤载荷约束的风机黏性控制策略

Under adverse wind condition, wind turbine has been protected by cutout strategy, which will lead to sharply decreased wind power or wind turbines tripping off in a large scale, seriously affecting the safety and stability of power system. To solve this problem, this paper constructed wind turbine safety operation constraints, and then proposed a cohesive control strategy considering equivalent damage load constraint. According to the real-time wind conditions, the cohesive control strategy adjusts the wind power to maintain the equivalent damage load inside the corresponding security boundary while maximizing the output power of wind farm by making full use of equivalent damage load bearing capacity of wind turbines, thus reducing the impact to the power system caused by the steep fall in power. The strategy doesn't change the origin mechanical control method or the machine construction. Through simulation and comparison with other control strategies, the superiority of the proposed cohesive strategy is verified.