摘要
并网风电场会显著影响局部电网的电压稳定性,为研究大规模风电接入对电网电压稳定性的影响,在PSCAD/EMTDC中建立了包含风电场的电网模型,以某实际风电场接入地区电网为例,详细分析和研究了三相短路故障情况下风电系统对电压稳定性的影响。仿真结果表明风电场无功补偿能力、故障点的位置以及故障切除时间等都将影响系统电压稳定性。通过提高风电场无功补偿能力、加快保护切除时间以及限制接入某点的风电容量,可提高风电接入系统的电压稳定性。
Interconnected wind farm will significantly affect the voltage stability of local power grid. In order to research on the effect of the voltage stability about large scale interconnected wind farm, the grid model containing wind farm is established in PSCAD/EMTDC. Taking a practical wind farm interconnecting to a regional power grid for example, it detail analyses the effect of voltage stability about wind farm under three-phase short fault. The simulation results show that the reactive power compensation capacity of wind farm, the position of fault point and the clearing time of protection can all affect the system voltage stability. Therefore, through improving the reactive power compensation capacity of wind farm, speeding up clearing time of protection and restricting wind power capacity of access to a point can improve the voltage stability about interconnected wind farm.
出处
《电力科学与工程》
2010年第4期1-4,共4页
Electric Power Science and Engineering
基金
华北电力大学青年教师科研基金资助项目(200911001)
