Capacity design of a distributed energy system based on integrated optimization and operation strategy of exergy loss reduction

摘要: Abstract With the increase in energy demands for heating, cooling, and electricity buildings, distributed system (DES), which is driven by renewable natural gas, has become an economic environmentally beneficial option generation supply. This paper presents a method integrated optimization of component capacity annual operation DES. In outer cycle optimization, generators storages optimized together to match fluctuating whole year. inner hourly storage managed following strategy that reduces exergy loss rate. Case studies DES design under different grid connection modes office building demonstrate feasibility flexibility proposed method. A traditional centralized employed as baseline performance, two other methods are utilized comparison. Results show designed carbon emissions 0.170 kg/kWh, consumption 0.392 kWh/kWh, costs 0.123 CNY/kWh, on average. contrast DESs methods, performance these parameters improved 0.019 kg/kWh, 0.078 0.031 respectively. Moreover, exhibits advantages saving, uncertainty resistance, power independence.