电网接纳风电能力的评估及应用

Evaluation and Application of Wind Power Integration Capacity in Power Grid

随着风电装机容量的快速增加,电网调峰能力与风电消纳之间的矛盾日益突出。文中提出一套基于电源结构、负荷特性和调峰能力的电网接纳风电能力评估体系。基于该评估体系,首先考虑了风电接入后对系统备用需求容量的影响,并基于发电可靠性指标计算出对应的备用容量;然后根据低谷常规机组调峰能力评估电网接纳风电能力。通过对2010年京津唐电网接纳风电能力的逐月分析可知,年底可接纳风电容量将远小于规划容量。针对风电送出受限的具体情况,提出了最大限度消纳风电的应对措施。

With the fast development of wind power, the conflict between limited power system regulation capability and increased wind power becomes more and more intense. A comprehensive method of wind power integration capacity assessment is presented, based on power source composition, load characteristics and load regulation capability. Through this method, the impact of wind integration on the reserve capacity is analyzed and the system spinning reserve is calculated based on generation reliability; then wind integration capacity is evaluated according to regulation capability of conventional units. The integration capacity of each month in 2010 is calculated and test results show that the wind integration capacity is much smaller than the planning capacity. At last, measures for maximum wind power integration are put forward according to the wind power curtailment in power grid.