采用随机事件的条件概率的运算法则，引入失效模式间的条件关联系数来反映结构之间的失效相关性。
Adopting algorithm of random event 'conditional probability and introducing condition association coefficient of failure mode can reflect failure dependence of structure.
并还讨论了风险分析所涉及的一些主要问题，如概率分布的选择以及确定风险变量间的相关性。
Major issues involved in risk analysis such as selection of probability distribution and setting correlation for risk variables are also discussed.
但针对概率潮流问题，目前在相关性控制方面仍待改善。
But there are still some problems in controlling correlation in probabilistic load flow.
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