高压直流输电可靠性评估的等效模型

EQUIVALENT MODEL FOR HVDC RELIABILITY EVALUATION

在深入研究 Markov过程的基本原理和累积状态之间转移频率的性质的基础上 ,建立了高压直流输电系统的数学模型 ,提出了等效模型的方法 ,并利用边界墙的原理求解等效模型中各累积状态之间的等效转移率。等效模型的使用 ,降低了求解随机转移概率矩阵的阶数 ,简化了计算 ,提高了精度。

Based on the basic theory of Markov processes and the properties of transmission frequencies among cumulativestates. the mathematical model of HVDC transmission system is established. The method to obtain its equivalent model isgiven. The equivalent transitional rate is obtained by boundary wall. Using this equivalent model, the order of the stochastictransitional probability matrix is reduced: the calculation is simplified with high accuracy. A practical example proves that themethod is correct and effective.