风电场接入电网的安全稳定分析

采用电力系统潮流算法,基于风电场出力与母线电压的P-V曲线,实现大容量风电场接入电网后电力系统的静态安全分析方法。建立异步风力发电机组的动态仿真模型,实现含有大容量风电场的电力系统动态稳定分析方法。结合风电场接入系统实例,提出保证电网和风电机组安全稳定运行的风电场运行控制方法。探讨通过控制负荷侧功率因数、采用动态无功补偿装置及进行故障后切除风电机组等措施提高电网动态稳定水平、改善风电场运行条件的有效方法。

Analysis on security and stability of integration of wind farms into power systems

The static security analysis method of power systems with large scale wind farms was achieved based on the P-V curves of wind farm outputs and bus voltages by using the load flow calculation method of power systems. The dynamic model of an induction wind generator was established and the dynamic stability analysis method of power systems with large scale wind farms was realized. Combining a typical example of the integration of wind farms into the grid, the operational control method of wind farms was put forward to guarantee the security and stability of both the power system and the wind farms. Some strategies, such as the control of power factors of loads, the application of dynamic reactive power compensators and tripping of the wind turbines after the fault, were studied to enhance the dynamic behavior of the power system and improve the operational conditions of wind farms.