光伏电源接入对配电网线损动态的影响研究

Study on the Impact of Photovoltaic Power Access on Line Loss Dynamics of Distribution Networks

随着全球对清洁能源的需求增长,光伏发电正迅速成为关键能源供应方式,与配电网的接入成为趋势。但这带来了配电网线损的问题。光伏发电是通过太阳能电池转化太阳光能为电能,但其产出受日照、温度等因素影响,给配电网带来挑战。线损是配电过程中的电能损失,其中固定线损和变量线损均受光伏发电的影响。选取某大型都市地区为例,对比有无光伏接入的情况,结果证明光伏接入显著影响线损动态。为避免此问题,推荐采用储能技术、动态调度策略及升级配电设备。未来研究应更深入探讨大规模光伏接入对电网的影响以及先进技术的利用。

With the growth of global demand for clean energy,photovoltaic(PV)power generation is rapidly becoming a key energy supply method,and access to the distribution grid is becoming a trend.However,this brings the problem of distribution network line loss.Photovoltaic(PV)power generation is the conversion of sunlight energy into electricity through solar cells,but its output is affected by factors such as sunlight and temperature,which brings challenges to the distribution network.Line loss is the loss of electrical energy in the distribution process,where both fixed and variable line loss are affected by PV generation.In this study,a large metropolitan area was selected as an example to compare the situation with and without PV access,and the results proved that PV access significantly affects line loss dynamics.To reduce this problem,energy storage technologies,dynamic dispatch strategies and upgraded distribution equipment are recommended.Future research should explore in more depth the impact of large-scale PV access on the grid and the utilisation of advanced technologies.