考虑多种终端配置的中低压配电网供电可靠性协同评估

Cooperative Evaluation of Power Supply Reliability of Medium and Low Voltage Distribution Network Considering Multiple Terminal Configurations

针对现有配电网可靠性评估方法无法整体评估到低压,对配电终端类型考虑不全面的问题,提出一种考虑多种终端配置的中低压可靠性协同评估方法。首先,从评估对象、评估指标以及评估框架三方面说明中低压配电网可靠性协同评估的基本思路;其次,结合馈线分区理念,考虑各类终端对供电可靠性的影响,建立基于多模块智能终端设备配置的故障查找与影响分析逻辑;再次,结合所提故障分析逻辑,提出不同电压等级协同分析的中低压蒙特卡洛可靠性评估方法;最后,以IEEE RBTS BUS-2系统为例,对不同场景下的系统可靠性水平进行了对比分析,验证了所述方法的有效性。

Aiming at the problems that the existing reliability evaluation methods of distribution network cannot fully evaluate low voltage system and the types of distribution terminals are not comprehensively considered,a collaborative evaluation method for medium and low voltage reliability considering multiple terminal configurations is proposed.Firstly,the basic idea of reliability collaborative evaluation of medium and low voltage distribution network is explained from three aspects:evaluation object,evaluation index and evaluation framework.Secondly,combining with the concept of feeder partition and considering the influence of various terminals on power supply reliability,the fault finding and impact analysis logic based on multi-module intelligent terminal device configuration is established.Thirdly,combined with the proposed fault analysis logic,a low-and medium-voltage Monte Carlo reliability assessment method based on collaborative analysis of different voltage levels is proposed.Finally,taking the IEEE RBTS BUS-2 system as an example,a comparative analysis of the system reliability levels in different scenarios is carried out to verify the effectiveness of the method.