全功率风电系统高电压穿越的仿真与实验研究

Simulation and Testing Research of Wind Turbines High Voltage Ride Through

随着国内风电装机容量的不断增长,其对电网可能产生的影响也越来越大,因此电网对机组的电网适应性要求也在不断提高。高电压穿越(HVRT)作为电网适应性要求的一部分,国外已制定相应标准,国内虽暂时没有展开相关测试,但相关人员已经在研究高电压穿越相关技术了,其要求在国内也必将得到推广。因此,以风电全功率变流器高电压穿越为例,通过理论分析、仿真及实验,揭示高电压穿越时变流器的运行状态,并研究其相关的控制策略。

With the increase of the capacity of wind power generation, the wind turbines may affect grid greatly. And the grid companies have proposed higher and higher grid adaptabilities for wind turbines. As one requirement of grid adaptabilities, High voltage ride through （HVRT） has become a standard in foreign countries. In our country, there has not such standard, but many researchers are, studying on this, the HVRT standard will come true soon. In this paper, using full power converter as an object of study, some researches on running states and control methods are done by theoretical analysis, simulations and tests when high voltage occurs.