Reliability Evaluation of Expressway Energy Self-reliance System Considering Time-varying Factors
In the context of"carbon neutrality"and"peak carbon dioxide emissions",the highway energy self-reli-ance system is gradually coming into the public's view,and the reliability assessment of this system is a necessary prerequisite for its reliability design,which is also important to ensure the safe and stable operation of the grid.Firstly,the component reliability modeling was carried out and the real-time failure rate model of the converter was obtained by the heat loss of the power supply element to correct the failure probability of the distributed generation.And then,me-teorological factors were introduced to other components to describe the impact of meteorological conditions and life cy-cle,so as to obtain the time-varying failure rate.Secondly,the feeder partitioning method was used to simplify the sys-tem reliability modeling based on the high dispersion of renewable energy in the system,which also facilitated the delin-eation of islands.Finally,the sequential Monte Carlo was used to build the system reliability evaluation model,and the load reduction strategy was introduced.The reliability index of the system was obtained through simulation analysis.The calculation results can provide a basis for identifying the weaknesses of the system and effectively improve the effi-ciency and level of operation and maintenance.
expressway energy self-reliance systemtime-varying failure rateSequential Monte Carloreliability as-sessment
万方数据
维普
