Design Of 66kV Photovoltaic Power Generation Project In Bianzhao,Tongyu

With the continuous improvement of people's material and spiritual living standards,the consumption of fossil energy is also increasing,the energy crisis is more and more serious,and the earth environment is gradually deteriorating,so it is an inevitable trend for social development to replace fossil energy with renewable energy.Therefore,finding new clean,safe and reliable renewable or sustainable energy has become the primary task of environmental protection.Abundant solar energy is an inexhaustible,pollution-free and renewable low-cost clean energy.Solar distributed photo-voltaic power generation is a new type of power generation system,which takes solar energy as the main energy and directly converts light energy into electrical energy for transmission.Photovoltaic power generation process will not produce any harmful gases,nor emit any pollution.It has the advantages of sustainable supply,clean,safe and noiseless,which is of great significance to the earth's environmental protection and to solve the crisis of one-off resource shortage.This paper first analyzes the purpose and significance of photovoltaic power generation,and summarizes the current situation and development of photovoltaic power generation at home and abroad.Then take the Tongyu bianzhao photovoltaic power generation project as the research object,focusing on the design of the electrical part of the 66 kV photovoltaic power station,the design of the solar cell module and the design of the secondary system,analyzing the configuration and principle of the relay protection of the photovoltaic power station,and a comprehensive theoretical analysis and practical operation research on the photovoltaic power generation system is carried out.Appropriate solar cell modules,battery packs,photovoltaic off grid controllers,photovoltaic inverters,DC combiner boxes,AC distribution cabinets and other related electrical equipment are selected,and the secondary system scheme of the electric and gas part is designed,as well as the related lightning protection and grounding of this type of solar photovoltaic power generation system In the scheme.Finally,a complete and reliable photovoltaic power supply system is designed based on the principle of solar photovoltaic power generation,and establishing the 66 kV photovoltaic power station with the solar energy as the main energy.Finally.Photovoltaic power generation system works stably,using solar energy as the main energy,effectively solving the problem of energy supply,and achieving the purpose of environmental protection.In addition,the power generation project has a wide range of applications and is not limited by the region.It can supply power nearby without long-distance transmission,which effectively solves the problem of power loss caused by long-distance transmission lines.Photovoltaic power station also has the advantages of short construction period,low cost of resources,and convenient and fast establishment,which can effectively solve the problem of continuous and reliable power supply of photovoltaic substation to grid load,effectively improve the unreasonable grid structure in Tongyu,low voltage in some areas,and improve the reliability of power supply.