CAJ | 학술논문

分布式电源(distributed generation，DG)具有启动速度快、结构简单、反应灵活等特点，在配电网黑启动中发挥着重要作用。分析了在电网大面积停电情况下基于DG的配电网局部自我恢复方案。因DG的发电功率不能满足配电网中所有负荷的供电，首先在主网分区恢复方案下，根据DG的性能和重要负荷的分布对配电网进行划分；然后讨论了分区后DG启动顺序及恢复路径的优化，以保证能够在尽可能短的时间内恢复尽可能多的重要负荷。该方法以最小路径权值和最大重要负荷恢复量为目标，满足负荷的恢复量不超过DG发电量等约束条件，采用改进粒子群算法进行求解。算例结果验证了该方法的有效性。
분포식전원(distributed generation，DG)구유계동속도쾌、결구간단、반응령활등특점，재배전망흑계동중발휘착중요작용。분석료재전망대면적정전정황하기우DG적배전망국부자아회복방안。인DG적발전공솔불능만족배전망중소유부하적공전，수선재주망분구회복방안하，근거DG적성능화중요부하적분포대배전망진행화분；연후토론료분구후DG계동순서급회복로경적우화，이보증능구재진가능단적시간내회복진가능다적중요부하。해방법이최소로경권치화최대중요부하회복량위목표，만족부하적회복량불초과DG발전량등약속조건，채용개진입자군산법진행구해。산례결과험증료해방법적유효성。
In view of its advantages in fast start-up, simple structure and flexible response, distributed generation (DG) plays an important role in the black start of distribution network. A DG-based local self-recovery scheme for distribution network at post-blackout early stage of power grid restoration is analyzed. Since the DG cannot meet the demand of supplying all loads in distribution network, firstly under the partition recovery scheme of main grid the distribution network is partitioned according to the performance of DG and the distribution of essential loads; secondly the starting sequence of DG after the partitioning and the optimization of the restoration path are discussed to ensure that the power supply for as many as possible loads can be recovered within as short time period as possible. In the proposed model, in which the weight of minimum path and restoration of power supply for maximum essential loads are taken as objectives and the recovered power supply for loads not exceeding the generating capacity of DG is taken as one of constraints, is solved by the modified particle swarm optimization (MPSO). Simulation results of IEEE 33-bus system show that the proposed method is effective.