电力系统暂态稳定风险量化分级方法研究

提出了基于风险理论的暂态稳定风险评估量化分级方法。从风险理论的角度出发,综合考虑运行方式、故障发生、故障类型、故障地点和重合闸等不确定因素计算系统失稳的概率,以暂态失稳导致的切负荷百分比作为后果,定量的得出暂态稳定风险值,并依据《国家电网公司安全事故调查规程》应用ALARP原则对风险量化分级,使风险值的意义更加清晰明确,为运行人员提供一定参考依据。最后,以WSCC3机9节点为例,说明了该方法的可行性和有效性。

Research on The Quantitation and Classification Method of Power System Transient Stability Risk

This paper presents a method about quantitation and classification of transient stability risk assessment based on the risk theory. From the point of risk theory, Uncertain factors include the operation, the fault occurring, the fault type, the fault location and the automatic reclosing process and so on, the consequence is the percentage of load cutting caused by transient instability, and then the risk value of transient stability is derived which is quantitative, then use the ALARP principle based on "safety accident investigation procedures of State Grid " to quantify and classify the risk value, which can make the meaning of risk value more clear, and also provide a reference for operating personnel. Finally, the WSCC 3 unit 9 bus test system is used to illustrate the feasibility and effectiveness of this method.