摘要
当前,全球经济都进入了快速发展的阶段,而能源危机已成为世界各国制约可持续发展的重要原因。在未来,对于新型清洁能源的开发和利用,已成为推动全球经济持续发展的战略性计划。太阳能资源作为取之不尽的清洁性再生能源之一,在开发和应用的过程中,不受地域限制,并且具有清洁、可持续利用的特点,因此对于太阳能资源的开发和利用引起了社会各界的广泛关注。尤其是在我国中西部地区,太阳能资源含量丰富,更加适于将太阳能资源应用在大规模的光伏并网发电过程中。然而,当前在光伏发电技术应用的过程中,光伏发电接入区域配电网系统会对区域配电网的电力输送造成升高接入点电压、引起电压波动等影响。针对这一问题,必须要对大型光伏电站(装机容量大于30 MWp以上)并网系统结构进行进一步的分析,并有针对性地调节并网技术,从而确保光伏发电系统并入区域配电网系统后,电力输送的稳定性。分析了光伏并网系统的构成以及应用特征,并就光伏并网的关键技术进行了探讨,希望能为不断提升光伏并网系统的运行稳定性提供参考意见。
At present,the global economy has entered a stage of rapid development,and the energy crisis has become an important reason restricting sustainable development all over the world.In the future,the development and utilization of new clean energy has become a strategic plan to promote the sustainable development of the global economy.As one of the inexhaustible clean renewable energy sources,solar energy resources are not geographically limited in the process of development and application,and solar energy resources have the characteristics of clean and sustainable utilization.Therefore,the development and utilization of solar energy resources has attracted wide attention from all walks of society.Especially in the central and western China,solar energy resources are rich,which is more suitable for the application of solar energy resources in large-scale photovoltaic grid connected power generation.However,in the current application of photovoltaic power generation technology,the grid connection of photovoltaic power generation to the regional distribution network system will have an impact on the power transmission of the regional distribution network,such as increasing the access point voltage and causing voltage fluctuation.To solve this problem,it is necessary to further analyze the grid connection system structure of large-scale photovoltaic power stations(with an installed capacity greater than 30 MWp)and adjust the grid connection technology,so as to ensure the stability of power transmission after the photovoltaic power generation system is incorporated into the regional distribution network system.The composition and application characteristics of PV grid connected system are analyzed,and the key technologies of PV grid connection are discussed,hoping to provide reference for improving the operation stability of PV grid connected system.
作者
李序成
LI Xucheng(Guangdong Hydropower No.2 Bureau Co.,Ltd.(Southeast Guangdong Hydropower Investment Co.,Ltd.),Guangzhou 511300,China)
出处
《电工技术》
2022年第4期61-64,共4页
Electric Engineering
关键词
大型光伏电站
光伏并网
关键性技术
并网发电特征
large photovoltaic power station
photovoltaic grid-connected connection
key technology
grid-connected power generation characteristics
