台风天气条件下的电网暂态稳定风险评估  

Transient stability risk assessment of power grid under typhoon weather

作　　者：宋晓喆[1] 汪震[1] 甘德强[1] 邱家驹[1] 

机构地区：[1]浙江大学电气工程学院,浙江杭州310027

出　　处：《电力系统保护与控制》2012年第24期1-8,共8页Power System Protection and Control

基　　金：国家自然科学基金资助项目(51277160);中央高校基本科研业务费专项资金资助项目(2011QNA4012);浙江省自然科学基金资助项目(LY12E07003);浙江省教育厅科研基金资助项目(Y201119800)~~

摘　　要：基于风险的分析方法可以定量地评估灾害条件下电网的短期安全稳定水平,并为电网的安全预警提供支持。提出了一种台风天气条件下的电网暂态稳定风险评估方法。该方法考虑了台风天气条件对输电线路运行可靠性的影响,并根据故障概率建立电网风险评估的预想故障集。对于预想故障集中不满足暂态稳定或静态安全的故障,建立了该故障下的最优紧急控制模型,并以紧急控制代价来衡量各预想故障的后果。最后通过新英格兰测试系统初步验证了所提出方法的有效性。Risk-based analysis methods can quantitatively assess the security level of power systems under disasters in the short-term level, and provide support to the security alarm of power grid. A novel method to assess the transient stability risk of power systems under typhoon weather conditions is proposed. This method considers the influence of typhoon on the operational reliability of transmissions lines, and the contingency set for risk assessment is established according to the contingency probabilities. For the contingency which could not satisfy both the transient stability constraints and post-contingency static security constraints, an optimal emergency control model is formulated. The contingency consequence induced by typhoon is measured by the cost of the emergency control in the study. The New England test system is used to demonstrate the effectiveness of the proposed method.

关 键 词：台风天气 运行可靠性 风险评估 暂态稳定 紧急控制 

分 类 号：TM712[电气工程—电力系统及自动化]