大规模风电地区电网电压稳定研究综述

风电的快速发展对风电地区电网电压稳定性威胁越来越大,为此,对国内外大规模风电地区电网电压稳定问题进行了综述。介绍了风力发电模型以及风电并网的电压变化计算以及风机的低电压穿越能力和我国对风机的低电压穿越能力的要求,分析影响风电地区电压稳定的因素和风电地区电网电压稳定的方法,并探讨解决大规模风电地区电网的电压稳定的措施。建议应从风力预测、故障时对风电并网点的电压暂态波形研究、风机脱网后的对应策略研究和火电与风电的配合控制电压策略,加强对大规模风电地区电网电压稳定性研究,保障风电地区的电网安全。

Summary on Voltage Stability of Power Grid in Large-scale Wind Power Area

Rapid development of wind power is more and more threatening voltage stability of power grid in wind power are- a. Therefore, this paper summarizes problem of voltage stability of power grid in large-scale wind power area. It introduces wind power generation model, voltage change calculation for wind power integration, low voltage ride through capability of wind power generator and requirements for low voltage ride through for wind power generator in our country. It analyzes factors affecting voltage stability in wind power area and methods for voltage stability. In addition, it discusses measures for solving voltage stability of power grid in large-scale wind power area. It suggests to strengthen study on voltage stability of power grid in large-scale wind power area in order to ensure safety of power grid in wind power area in aspects of wind pow- er forecast, study on voltage transient wave for wind power integration point at fault time, countermeasures study after wind power generator taking off the grid and coordinated voltage control strategies by thermal power and wind power.