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Optimization of an isolated photo-voltaic generating unit with battery energy storage system using electric system cascade analysis

机译:电气系统级联分析优化带电池储能系统的隔离式光伏发电机组

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摘要

This paper presents an improvement to the iterative method of electric system cascade analysis (ESCA) for the optimisation of an isolated PV system with battery energy storage system (BESS) for a residential load. The ESCA algorithm is implemented on MATLAB software environment with Final Excess Energy (FEE), Loss of Power Supply Probability (LPSP) and system cost as optimization constraints. The load, temperature and solar radiation profiles are considered for a year, based on historical data. Practical losses in solar radiation reaching the PV collector surface are considered for analysis. Change in PV efficiency due to variation in temperature and change in charge/discharge efficiency of the battery based on current state of charge (SOC) of BESS are taken into consideration which further bolsters the credibility of the ESCA methodology. The ESCA methodology is used to optimize a PV-BESS system for a residential load with average daily consumption of 26.1 kWh. The optimized result obtained from improved ESCA are compared and verified with benchmark HOMER software.
机译:本文提出了一种对电气系统级联分析(ESCA)迭代方法的改进,该方法可优化带有住宅用户负载的电池储能系统(BESS)的隔离式光伏系统。 ESCA算法是在MATLAB软件环境中实现的,其中的最终剩余能量(FEE),电源损耗(LPSP)和系统成本是优化约束。根据历史数据,考虑一年的负载,温度和太阳辐射曲线。分析时会考虑到达PV集热器表面的太阳辐射的实际损耗。考虑到由于温度变化引起的PV效率变化以及基于BESS的当前充电状态(SOC)的电池充电/放电效率变化,这进一步增强了ESCA方法的可信度。 ESCA方法用于优化日均耗电量26.1 kWh的住宅负载的PV-BESS系统。从改进的ESCA获得的优化结果将与基准HOMER软件进行比较和验证。

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