分布式光伏电能质量问题的影响及治理方法

The Impact and Treatment Methods of Distributed Photovoltaic Power Quality Problems

能源问题是世界各国的共同难题,我国非常重视可再生能源的发展,可再生能源是政策导向型产业。我国幅员辽阔、光照充足,在光伏发电方面具有得天独厚的优势,因此我国是光伏发电大国,其中分布式光伏发电发展最为迅猛。但分布式光伏发电也带来了一定的电能质量问题,解决好电能质量问题是安全平稳供电的基础和保障。因此,根据国内外学者的研究,介绍了分布式电源并网引发的电能质量问题,包括谐波污染、三相不平衡、电压偏差、频率偏差等,然后分析了分布式光伏发电并网的关键技术,最后阐述了分布式光伏发电提高电能质量的未来规划,希望能够对相关从业人员提供一定的理论借鉴和研究方向。

Energy problem is a common problem in the world.China attaches great importance to the development of renewable energy,and renewable energy is a policy-oriented industry.China has a vast territory,sufficient light,and has unique advantages in photovoltaic power generation,so China is a large photovoltaic power generation country,of which distributed photovoltaic power generation has developed most rapidly.However,distributed photovoltaic power generation also brings certain power quality problems,and solving the power quality problem is the basis and guarantee for safe and stable power supply.Therefore,according to the research of domestic and foreign scholars,the power quality problems caused by distributed power supply integration are introduced,including harmonic pollution,three-phase imbalance,voltage deviation,frequency deviation and other aspects.Then,the key technologies distributed photovoltaic power generation grid connection are analyzed.Finally,the future planning of distributed photovoltaic power generation to improve point power quality is expounded,hoping to provide a certain theoretical references and research directions for relevant practitioners.