严重灾害下特高压交直流电网风险评估方法Risk Assessment Method of UHV AC/DC Power System in Serious Disasters
龙日尚;张建华;蒙园;谭涛;胡浩;刘阳;
摘要(Abstract):
为研究特高压交直流电网承受自然灾害的能力,基于风险评估理论,研究了适用于严重灾害下特高压交直流混合电网的安全性分析方法。首先,考虑连锁故障的全过程,提出一种基于PSD电力系统分析软件仿真的快速故障概率计算方法,计算系统在某初始故障集下的连锁故障概率;并考虑故障恢复阶段的损失,建立全过程风险评估模型;其次,从电网架构、故障状态、经济损失3个方面提出了综合指标评价体系,对系统风险进行了量化评估。最后对某地区特高压电网2种规划方案进行了风险评估,通过比较其连锁故障发展过程,并根据事故阶段和恢复阶段的风险指标计算结果,得出了优选网架规划方案,验证了研究工作的有效性。
关键词(KeyWords): 特高压;连锁故障;风险评估;指标体系
基金项目(Foundation): 国家自然科学基金项目(51277067);; 电网技术国际标准研制(201510207-3)~~
作者(Author): 龙日尚;张建华;蒙园;谭涛;胡浩;刘阳;
Email:
DOI: 10.13335/j.1000-3673.pst.2016.2842
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