| 引用本文: | 侯宇翔,彭敏放,朱亮,车红卫,侯婧媖.考虑联络线转供及孤岛划分的配电网风险评估[J].电力自动化设备,2017,37(10): |
| HOU Yuxiang,PENG Minfang,ZHU Liang,CHE Hongwei,HOU Jingying.Risk assessment for distribution network considering tie line transfer and island partition[J].Electric Power Automation Equipment,2017,37(10): |
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| 摘要: |
| 基于风险评估理论和N-1安全准则，针对含分布式电源的配电系统故障及其供电恢复情况，提出负荷点损失风险指标、线路过负荷风险指标及其综合风险指标评估系统的风险程度，通过统计分析找到系统脆弱节点及线路。基于启发式算法，提出优先联络线转供、然后通过分布式电源孤岛划分相互配合的故障恢复策略，并从最大限度地降低系统负荷点损失风险的角度讨论了分布式电源的入网位置。以IEEE 33节点配电系统为例，验证了所提评估指标能反映含分布式电源配电网的风险程度，所提故障恢复策略及分布式电源入网位置方案能有效降低系统风险。 |
| 关键词: 配电网 风险评估 故障恢复 分布式电源 N-1安全准则 联络线转供 孤岛划分 启发式算法 |
| DOI：10.16081/j.issn.1006-6047.2017.10.012 |
| 分类号:TM761 |
| 基金项目:国家自然科学基金资助项目(61472128,61173108)；湖南省自然科学基金重点项目(14JJ2150) |
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| Risk assessment for distribution network considering tie line transfer and island partition |
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HOU Yuxiang1, PENG Minfang1, ZHU Liang2, CHE Hongwei2, HOU Jingying2
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1.School of Electrical and Information Engineering, Hunan University, Changsha 410082, China;2.State Grid Hunan Electric Power Company, Changsha 410007, China
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| Abstract: |
| Based on the risk assessment theory and N-1 security criterion, aiming at the faults and power supply recovery situation of distribution system with DGs(Distributed Generations),loss risk index of load node, overload risk index of line and integrated risk index are proposed to find out the vulnerable nodes and lines in the network and assess the risk degree of system. Based on the heuristic algorithm, the fault recovery strategy is proposed, which uses tie lines to transfer load at first and then through DG islands to restore the remaining power supply. The grid-integrated location selection of DGs is also discussed from the aspect of minimizing the loss risk of load nodes. IEEE 33-bus distribution system is simulated to verify that the proposed assessment indexes can reflect the risk degree of distribution network with DGs and the proposed fault recovery strategy and grid-integrated location scheme of DGs can reduce the system risk effectively. |
| Key words: distribution network risk assessment fault recovery distributed generation N-1 security criterion tie line transfer island partition heuristic algorithm |
