CAJ | 학술논문

基于配电网的有向网络模型，提出了一种V2G模式下计及设备开断概率和负荷转移概率的配电网可靠性评估算法。首先分析了网络中元件故障后的传播路径和传播特性，引入期望对可靠性指标进行描述，进而建立了配电系统可靠性分析模型。在V2G模式下，该算法根据电动汽车充放电动态概率模型将电动汽车等效为备用电源，再根据其额定功率，确定电动汽车的最大供电范围和对该范围内各区域的供电次序，计算可靠供电概率，从而建立电动汽车充放电随机性与供电可靠性之间的映射。RBTS母线6馈线4系统算例分析表明，电动汽车接入配电网后，能够显著改善配电网局部的供电可靠性。
기우배전망적유향망락모형，제출료일충V2G모식하계급설비개단개솔화부하전이개솔적배전망가고성평고산법。수선분석료망락중원건고장후적전파로경화전파특성，인입기망대가고성지표진행묘술，진이건립료배전계통가고성분석모형。재V2G모식하，해산법근거전동기차충방전동태개솔모형장전동기차등효위비용전원，재근거기액정공솔，학정전동기차적최대공전범위화대해범위내각구역적공전차서，계산가고공전개솔，종이건립전동기차충방전수궤성여공전가고성지간적영사。RBTS모선6궤선4계통산례분석표명，전동기차접입배전망후，능구현저개선배전망국부적공전가고성。
Based on the directed network model of distribution network, considering equipment breaking probability and load transfer probability a reliability evaluation algorithm for distribution network under V2G mode is proposed. Firstly, the post-fault transfer path and characteristic of elements in the network are analyzed, and the expectation is led in to describe the reliability indices, then a reliability analysis model of distribution network is further established. Under V2G mode, according to dynamic charging/discharging probability model of electric vehicles (EV) the EV is equivalent to backup power sources by the proposed algorithm, and then according to the rated capacity of EV both the biggest power supply range of EV and the order of power supply to areas within this range are determined, and then the probability of reliable power supply is computed, thus the mapping between the randomness of EV charging/discharging and reliability of power supply is established. Simulation results of feeder 4 of RBTS bus-6 show that under the V2G mode the local power supply reliability of distribution network can be improved obviously.