地区电网接纳风电能力的分析计算

Calculation of admitting capacity of regional power grid for wind power

地区电网风电规模达到一定比例后,由于地区电网鲁棒性不够、可调用的灵活性电源不足,并且电网规划滞后,导致电网接纳能力严重不足.在考虑风电同时率和反调峰率的基础上,建立了基于调峰平衡约束的风电接纳能力计算方法.根据电网功率平衡约束计算出电网调峰容量,然后综合分析地区电网常规机组可参与调峰的范围和当地负荷特性与外界电网功率的交换值,并结合风电同时率与反调峰率统计分析计算出地区风电接纳能力.通过某地区风电场的算例证明了该计算方法的准确性和有效性,对风资源丰富地区电网合理发展研究具有一定的价值.

With the wind power scale reach a certain percent, the regional power grid isn＇t robust enough to accept seriously, because of the power grid planning lag, lack of flexibility power and experience in large wind power. Taking full account of the wind velocity and wind power characteristics based on the regional power compose ,this paper establishes a method based on peak shaving balance constraint for wind power capacity. Calculating the power peaking capacity according to grid power balance constraint, then analy- zing the range of regional power grid regular units which can participate peaking, and analyzing the ex- change value between local load characteristics and external grid power, according to the analysis of wind power simultaneity and anti-peaking, regional power admitting capacity wind power can be calculated. A region wind farm numerical example has proved the accuracy and so as to make certain contribution for reasonable development and regions. validity of the calculation method above, research of the grid in wind resource-rich regions.