考虑风电能量随机性的配电网可靠性快速评估

提出了一种考虑风电能量随机性的配电网可靠性评估新网络模型和快速算法。新网络模型中配电网简化成开关-区域块网络,并分成主网络和支网络2个部分。通过对风电功率的概率特性和支网络故障特性的分析,构造了风电的供电能力范围,并确定了风电对供电能力范围内各区域块的供电次序和供电概率,实现了风电随机出力与其供电能力范围内供电可靠性指标的映射。新的可靠性评估算法区别对待主网络和支网络,利用故障模式影响分析(failure-mode-effect-analysis,FMEA)法计算主网络的可靠性指标,利用元件对可靠性指标的逆流和顺流传递特性计算支网络的可靠性指标,并在可靠性指标的顺流传递中考虑了风电对其供电能力范围的可靠性的定量影响。算例仿真验证了该方法的有效性。

Fast Algorithm for Distribution System Reliability Evaluation Considering the Random Energy Output of Wind Power Generators

A novel network model and a fast algorithm for distribution system reliability evaluation are presented,which consider the random energy output of wind power generators(WPGs).The novel model first simplifies the distribution network to a switch-section network,and then divided it into two kinds of parts named as the main-networks and the branch-networks.After analyzing the energy output feature of WPGs and the fault characteristics in branch-networks,the supply area of WPGs is built.Then the order and proba...