Expansion planning of substation capacity by considering service reliability
Expansion planning of substation capacity by considering service reliability
复制标题
考虑服务可靠性的变电站扩容规划
DOI：
10.1109/icpst.2004.1459966
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
C. Chen
中科院分区：
文献类型：
--
作者：
C.S. Chen;M.Y. Huang;C. Chen
变电站扩容规划是配电系统维持服务可靠性的一个非常关键的问题。本文提出了一种考虑负载预期损失（LOLE）的变电站主变压器扩容规划方法。为了考察配电系统的可靠性，选取台电凤山地区的6个服务区进行计算机模拟。根据历史负荷数据和负荷特征，采用时间序列法对各地区未来20年的年峰值负荷进行预测。利用变电站主变强制停运率（FOR）求解各服务区的LOLE。因此，主变扩容规划是通过LOLE超过规定标准当年投入新主变得出的。为了进一步提高系统可靠性，还考虑了不同区域之间联络线容量约束下主变的容量转移能力。结果发现，采用该方法进行主变压器扩建规划可以提供更好的变压器投资成本效益，以满足运行可靠性和系统峰值负载。
The expansion planning of substation capacity is a very critical issue for distribution system to maintain the service reliability. This paper proposes a methodology for capacity expansion planning of main transformers in substations by considering loss of load expectation (LOLE). To investigate the distribution system reliability, six service areas in Fengshan district of Taipower are selected for computer simulation. The forecasting of annual peak loadings of each area for the future 20 years is performed by the time series method based on the historical load data and load characteristics. By using the forced outage rate (FOR) of main transformers in the substations, the LOLE of each service area is solved. The capacity expansion planning of main transformers is therefore obtained by committing new main transformers at the year with LOLE exceeding the specified criterion. To further enhance system reliability, the capacity transfer capability of main transformers with constraint of tie line capacity between different areas is also considered. It is found that the expansion planning of main transformers by the proposed methodology can provide better-cost effectiveness of transformer investment to satisfy the service reliability as well as the system peak loading.