基于故障树蒙特卡洛模拟法的孤岛微电网薄弱环节识别

发布时间：2018-01-18 03:31

本文关键词：基于故障树蒙特卡洛模拟法的孤岛微电网薄弱环节识别　出处：《电力自动化设备》2017年04期 　论文类型：期刊论文

【摘要】：为增强微电网风险评估工作的针对性,采用故障树蒙特卡洛模拟法对孤岛微电网的薄弱环节进行识别。以网内不同用户供电中断为顶事件建立各用户的故障树模型,通过蒙特卡洛模拟法随机抽样建立孤岛微电网的两状态模型。从元件重要度和网络风险重要度2个方面,建立微电网薄弱环节重要度指标体系。对某典型低压孤岛微电网的薄弱环节进行识别,评估孤岛微电网的可靠运行能力,算例结果验证了所提方法的合理性。结果表明,柴油机和逆变器是该算例微电网的薄弱环节,降低其故障率有利于降低微电网的风险水平。
[Abstract]:In order to enhance the micro-grid risk assessment work targeted. The fault tree Monte Carlo simulation method is used to identify the weak links of the isolated island microgrid, and the fault tree model of each user is established by taking the power supply interruption of different users in the network as the top event. The two-state model of isolated island microgrid is established by Monte Carlo simulation method, which includes two aspects: component importance and network risk importance. Establish the index system of the microgrid weak link importance, identify the weak link of a typical low-voltage isolated microgrid, and evaluate the reliable operation ability of the isolated island microgrid. The simulation results show that the diesel engine and inverter are the weak links of the microgrid, and reducing the failure rate is helpful to reduce the risk level of the microgrid.
【作者单位】：河海大学能源与电气学院;河海大学可再生能源发电技术教育部工程研究中心;
【基金】：国家自然科学基金资助项目(51477041) 教育部、国家外国专家局海外名师项目(MS2012HHDX021)~~
【分类号】：TM727
【正文快照】： 0引言微电网凭借其自治运行、独立组网等特点,在一些偏远的山区或海岛等大电网不能普及的地区得到了实际应用,解决了居民用电问题,实现了孤岛运行[1-2]。然而,微电网孤岛运行时与大电网脱离,且网内存在许多具有间歇性和波动性的分布式电源,导致网内用户的长期稳定供电具有一定

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