含分布式风电的配电网可靠性研究

Reliability Research of Distribution Network with Distributed Wind Power

分布式风力发电接入配电网,对配电网的可靠性产生影响.采用拉丁超立方采样和改进的同步回带消减技术建立风力发电机出力多场景模型.根据配电网中负荷的重要程度,定义等值有效负荷.以等值有效负荷最大为目标建立配电网孤岛划分模型.对最小路法进行改进,计算在不同场景下负荷点在孤岛划分范围内的概率,求得负荷点的可靠性指标.在IEEE-RBTS Bus6系统上进行仿真,算例分析验证了方法的有效性.

Distributed wind power has effect on the distribution network reliability. The paper establishes the model for output power of wind turbines based on Latin hypercube sampling and improves simultaneous backward reduction.Based on the importance of the load,the paper defines the equivalent effective load an optimization model is established of distribution network islanding scheme with the goal of the maximum equivalent effective load. The paper improves the minimal path,calculates the probabilities of load points which are in the islanding scope,and solves the reliability indices for load points indifferent scenes. The algorithm is applied to a modified IEEE-RBTS Bus6 test system,the effectiveness of this algorithm is analyzed and confirmed by the simulation example.