Hosseini Mehdi, Shayanfar Heidar Ali, Fotuhi-Firuzabad Mahmoud
Center of Excellence for Power System Automation and Operation, Department of Electrical Engineering, Iran University of Science & Technology, Tehran, Iran.
ISA Trans. 2009 Jan;48(1):98-106. doi: 10.1016/j.isatra.2008.10.006. Epub 2008 Nov 11.
This paper presents a reliability assessment algorithm for distribution systems using a Static Series Voltage Regulator (SSVR). Furthermore, this algorithm considers the effects of Distributed Generation (DG) units, alternative sources, system reconfiguration, load shedding and load adding on distribution system reliability indices. In this algorithm, load points are classified into 8 types and separated restoration times are considered for each class. Comparative studies are conducted to investigate the impacts of DG and alternative source unavailability on the distribution system reliability. For reliability assessment, the customer-oriented reliability indices such as SAIFI, SAIDI, CAIDI ASUI and also load- and energy-oriented indices such as ENS and AENS are evaluated. The effectiveness of the proposed algorithm is examined on the two standard distribution systems consisting of 33 and 69 nodes. The best location of the SSVR in distribution systems is determined based on different reliability indices, separately. Results show that the proposed algorithm is efficient for large-scale radial distribution systems and can accommodate the effects of fault isolation and load restoration.
本文提出了一种使用静态串联电压调节器（SSVR）的配电系统可靠性评估算法。此外，该算法考虑了分布式发电（DG）单元、替代电源、系统重构、负荷削减和负荷增加对配电系统可靠性指标的影响。在该算法中，负荷点被分为8类，并为每类考虑了不同的恢复时间。进行了对比研究，以调查DG和替代电源不可用对配电系统可靠性的影响。为了进行可靠性评估，评估了面向客户的可靠性指标，如系统平均停电频率指标（SAIFI）、系统平均停电持续时间指标（SAIDI）、平均停电持续时间指标（CAIDI）、平均供电可用率指标（ASUI），以及面向负荷和能量的指标，如停电电量指标（ENS）和平均停电电量指标（AENS）。在所提出的算法在由33个和69个节点组成的两个标准配电系统上进行了有效性检验。分别基于不同的可靠性指标确定了配电系统中SSVR的最佳位置。结果表明，所提出的算法对于大规模辐射状配电系统是有效的，并且能够适应故障隔离和负荷恢复的影响。
