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发明公开
CN104332996A 一种评估电力系统可靠性的方法 有权

一种评估电力系统可靠性的方法
摘要：
本发明提出一种评估电力系统可靠性的方法，所述方法包括(1)对所述电力系统参数初始化；(2)计算所述电力系统每一状态Xi的PL(Xi)；(3)计算所述电力系统每一状态Xi的W(Xi；u,vk-1)；(4)更新参数(5)判断是否满足rk＝PL总；(6)计算对偶抽样的系统切负荷标志和切负荷量(7)计算W(Xi；u,v*)，统计LOLP和EDNS及其收敛系数βLOLP和βEDNS；(8)判断是否满足βLOLP≤βMAX且βEDNS≤βMAX或N2≥NMAX；(9)输出可靠性指标。本发明提出的方法在元件故障率较低，即可靠性系统的可靠性评估中仍然高效可靠，充分表明该方法适用于不同可靠性系统的可靠性评估。
摘要（英）：

The invention provides a method for estimating power system reliability. The method comprises the steps of (1) initializing the parameters of the power system, (2) calculating the PL(Xi) of each state of the power system, (3) calculating the W(Xi; u, v) of each state of the power system, (4) updating the parameters as shown in the description, (5) determining whether the equation rk=PLtotal is satisfied, (6) calculating the dual sampled system load shedding flag as shown in the description and a shed load amount as shown in the description, (7) calculating W(Xi; u, v*), and calculating LOLP and EDNS as well as coefficients of convergence beta LOLP and beta EDNS, (8) determining whether beta LOLP is smaller than or equal to beta MAX and beta EDNS is smaller than or equal to beta MAX or N2 is greater than or equal to NMAX, and (9) outputting a reliability index. The method for estimating the power system reliability is still efficient and reliable in the reliability estimation of a reliable system having relatively low element failure rate, and therefore, the method is applicable to the reliability estimation of different reliable systems.

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