计及电网安全风险的风电机组最优规划

引入配电系统的风电机组如果配置不当会给系统的安全与经济运行带来严重的负面影响。在机会约束规划的框架下构建了风电机组的优化规划模型，并提出了一种计及风电机组出力不确定性的静态安全风险评估方法。该方法将初始投资的年值费用、风电机组的年运行费用、年网络损耗费用及年静态安全风险费用总和的最小化作为目标函数， 计及了风电机组接入后对系统可靠性的影响，并应用和声搜索算法求解该优化问题。以IEEE 37节点配电系统作为算例，说明了所发展的模型和算法的基本特征。

Optimal Planning of Wind Generators Considering Security Risks of Power Networks

There may be negative effect on the secure operation of a distribution system due to its inappropriate placements of wind generators. In the framework of the chance constrained programming (CCP), a new model for planning wind generators in a distribution system is established, and a new method for evaluating steady security risks associated with the uncertainties of wind generators is presented in this paper. Minimizing the total cost, which is taken as an objective function, of annual wind generators investment and operation costs, annual network losses costs as well as those associated with annual steady security risks, and taking the effect of wind generators on the system reliability into account, the proposed method realizes the optimal planning of wind generators in a distribution system with the harmony search (HS) method. The essential features of the proposed model and algorithum are demonstrated with the IEEE 37-node distribution network .