自然灾害下高风险多重故障集快速生成方法

随着电力系统稳定特性日趋复杂、极端自然灾害频发以及社会对电能依赖程度的增长,迫切需要将停电防御框架向自然灾害预警拓展.提出一种自然灾害下高风险多重故障集快速生成方法,将高风险预想故障纳入在线安全分析.在兼顾多类型自然灾害和多地点电气设备空间-电气耦合特性的基础上计算群发故障和相继故障的组合概率,从网架结构脆弱性、电网状...

Rapid generation method of high risk multiple fault set under natural disaster

Along with increasing complication of stability characteristic of power system, frequent occurrence of extreme natural disasters and increasing dependence of society on electrical energy, it is urgent to extent blackout defense framework to early-warning of natural disaster. A rapid generation method of high risk multiple fault set under natural disasters is proposed, which incorporates high risk anticipated faults into online security analysis. On the basis of considering multiple types of natural disasters and spatial-electrical coupling characteristics of electrical equipment in multiple locations, the combined probability of group faults and successive faults is calculated. Fault consequence is evaluated from three dimensions of grid structure vulnerability, power grid state vulnerability and power grid fault risk. The backtracking algorithm is adopted to quickly screen and generate high risk fault set under natural disasters. The effectiveness and practicability of the proposed method are verified by a practical power grid case.