Protection schemes are modelled through Petri Nets, in order to carry out performance evaluation. Marked Petri Nets are suitable for qualitative evaluation, while Time Petri Nets and Timed Petri Nets are convenient for cycle time evaluations, and for deriving relationships between the time parameters of the primary and the secondary protection. Stochastic Petri nets are used for the modelling of the stochastic nature of protection; they enable the evaluation of probabilistic performance measures, and have advantages over simulation techniques.
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机译：保护方案通过Petri网建模，以进行性能评估。带标记的Petri网适合定性评估，而Time Petri Nets和Timed Petri Nets便于进行循环时间评估，以及推导一级保护和二级保护的时间参数之间的关系。随机Petri网用于保护的随机性建模。它们能够评估概率性能指标，并且具有优于仿真技术的优势。
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