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.
关键词
高速公路新能源微网/时变故障率/时序蒙特卡洛/可靠性评估
Key words
expressway energy self-reliance system/time-varying failure rate/Sequential Monte Carlo/reliability as-sessment
维普
万方数据