中压配电网接线模式的最优分段研究

分析了10kV中压配电网各种接线模式的分段情况, 提出了一种配电线路最优分段计算的新思路。针对中压配电网的各种接线模式进行了计算,从而得到了配电网沿线负荷均匀分布时的线路最优分段数和供电半径的对应关系。最后对最优分段数计算方法进行了灵敏度分析,结果表明当线路供电半径一定时,10kV配电线路的最优分段数的值将受到分段开关造价、产电比、线路故障率和修复时间、线路线型和综合售电收益等因素的影响。

Optimal Sectioning of Connection Modes in Medium Voltage Distribution Systems

The authors carry out concrete analysis on sectioning of different connection modes for 10kV distribution network and propose a new idea of optimal sectioning of distribution transmission lines. The calculation of various connection modes used in medium voltage distribution network is conducted, thus the relation between the optimal sections and power supply radius is obtained while the power loads along the transmission line are uniformly distributed. Sensitivity analysis on the calculation method for optimal sections is performed and the results show that under a certain given power supply radius the value of optimal sections will be impacted by following factors, namely the manufacturing cost of disconnected switch, ratio of output value to unit electric energy, the failure rate of transmission line and repair time, conductor type of transmission line and comprehensive revenue from selling electricity.