发电系统可靠性指标及其计算

Indices and Calculation of Power Generation System Reliability

发电系统传统地从概率、期望值、频率和持续时间几个指标衡量发电系统的可靠性,即电源充裕度．对发电系统传统可靠性指标及其计算方法进行了分析,并以IEEE-24RTS系统为例进行计算,分析影响和改善系统可靠性的因素,以期通过对传统指标和计算方法的剖析,为市场环境下可靠性问题分析提供依据．分析结果表明:可通过采用峰谷分时电价政策或进行合理有效的负荷管理,改变系统的负荷曲线形状,以期达到提高系统可靠性和经济运行的目的．

Traditional power generation system reliability indices such as probality index, expectation index, frenquency index and duration index are used to evaluate the level of power generation system reliability. This paper analyzes the traditional power generation system reliability indices and the calculation method, and reliability indices of IEEE 24 RTs bus test system are calculated to find the factors affecting or improving reliability. This paper tries to supply references to the problem of reliability on power market conditions. The results show that implementing TOU （ tine-of- use） pricing policy and load management can improve the system reliability and benefit.