中压配电系统供电模型综合评价

Comprehensive evaluation of power supply model of medium voltage distribution system

针对当前中压配电系统供电模型的研究缺乏有效分析和评价方法的问题,提出了供电模型评价指标体系与指标计算方法,并对典型供电模型进行了评价。首先对中压配电系统供电模型进行了定义并给出了典型类型,然后从供电能力、供电质量、转供能力、经济性、协调性五个方面建立了供电模型评价指标体系,并提出了各个评价指标的分析方法。其中,在各指标分析中,考虑了由于线路最大负载率的不同而造成的线路实际供电距离的差别,进而修正了可靠性、电压偏差、经济性等传统分析中的线路长度计算方法。最后应用该评价指标体系对三角形类供电模型进行了评价,得出了各个供电模型的适应结果。

Evaluation index system and index calculation method of power supply model （PSM） is presented in view of the fact that the current research on the PSM of MV distribution system lacks effective analysis and evaluation method. Typical PSMs are evaluated by the evaluation index system. Firstly, PSM of MV distribution system is defined and typical types of PSM are presented. Secondly, evaluation index system of PSM which contains power supply capability, power supply quality, power transfer capability, economy and coordination is established and corresponding analysis method of each index is presented. The effect on power supply distance caused by load rate of lines is also considered so that calculation method of length of line is corrected in the analysis of reliability, voltage deviation, economy, etc. Finally, TRIANGLE power supply model is taken as an example to be evaluated by the evaluation index system and the evaluation result of each PSM is given.