电网弃风电量计算方法及其在电网规划中的应用

摘要

This paper uses trapezoidal fuzzy membership function to describe uncertainty of wind power output and proposes a fuzzy calculation method for wind spillage electric quantity caused by insufficient capacity of the power transmission system under different wind power output levels which can reduce calculation workload at the same time of effectively simulating characteristics of wind power output. In aspects of planning objective and constraint conditions,it discusses application of this method in transmission network expansion planning. Taking the modified New England 39-bus system for an example,it verifies validity of this method.%采用梯形模糊隶属度函数描述风电出力的不确定性，提出不同风电出力水平下由于输电系统容量不足所导致的弃风电量的模糊计算方法，在有效模拟风电出力特性的同时可降低计算工作量。从规划目标和约束条件两个方面讨论该方法在电网规划中的应用；最后，以修改的新英格兰10机39节点为例，对所提方法的有效性进行验证。