基于负荷分类评估的配电网可靠性分析方法

Reliability Analysis Method of Distribution Network Based on Load Classification Evaluation

快速准确的可靠性评估技术对提高配电网运行水平至关重要.本文在传统配电网可靠性评估基础上,针对具有快速转供功能的含分布式电源配电网,提出了一种基于负荷分类的可靠性评估方法.该方法基于概率和抽样方法确定系统运行状态及故障或失效发生地点,将配电网分为不同类型的负荷进行分析,并考虑了含分布式电源情况下的网络重构和负荷转供等功能.该方法有效地简化了传统可靠性评估过程的复杂性,提高了分析效率,能应用于配电网的实时可靠性评估.采用改进的IEEE-RBTS Bus6系统验证了所提模型及方法的可行性.

The rapid and accurate reliability assessment technique is critical to the improvement of distribution network operational level.A reliability evaluation method of distribution network based on load classification is proposed in the paper,which uses probabilities and sampling approach to determine the operating state of the system and the place where the fault or failure occurs.The distribution system is divided into different types of loads for analysis,and the functions of network reconfiguration and load transfer are taken into account under the case of distributed generation.This method can effectively simplify the traditional reliability evaluation process and improve the efficiency of analysis.It can be also suitable for the real-time reliability evaluation of the distribution network.The validity of the proposed method is verified by the improved IEEE-RBTS Bus 6 system as an example.