并网方式对分布式光伏发电项目成本与收益的影响

摘要

At present, distributed photovoltaic generation projects mainly rely on subsidies. The high kWh cost is still the main factor which restricts the development of the PV. In this paper, through the whole-life cycle method, the kWh cost and benefit of distributed PV under various grid connection modes are calculated. The influence of voltage level and consumption mode on cost and benefit of distributed PV generation is ana-lyzed. The sensitivity analysis shows that local consumption of PV power and low-voltage grid integration should be adopted preferentially to improve profitability of distributed PV generation.%目前，分布式光伏发电项目主要依靠补贴政策维持，度电成本高仍是制约光伏发电项目发展的主要因素。通过全寿命周期的方法，计算了不同并网方式的分布式光伏电站的度电成本和收益，分析了并网电压等级和电量消纳方式这2个敏感性因素对分布式光伏发电成本、收益的影响。敏感性分析结果显示若要提高分布式光伏发电项目的收益率，应优先采用光伏电量就地消纳的方式，并尽量采用低压并网。