What is the difference between centralized and distributed photovoltaic power generation systems?

According to different photovoltaic access can be divided into centralized distributed photovoltaic power generation systems, photovoltaic power generation and its own characteristics and advantages and disadvantages are as follows. 1. Characteristics and advantages and disadvantages features: centralized photovoltaic power generation can be directly to the power grid, the

according to the different access mode of photovoltaic power generation, photovoltaic power generation can be divided into centralized and distributed photovoltaic power generation systems. Their respective characteristics, advantages and disadvantages are as follows. 1. Centralized photovoltaic characteristics, advantages and disadvantages of characteristic: the power can be transmitted directly to the power grid, unified supply power to users. With the large power grid power exchange is one-way. Advantage: ( 1) Stable output location flexible, photovoltaic, peak clipping effect is obvious. ( 2) Flexible operation mode, the reactive voltage control is more convenient than distributed photovoltaic (pv), power grid frequency control is easy to implement. ( 3) Short construction period, strong adaptability to environment, don't need water, raw materials such as coal transportation security, low running cost, easy to centralized management, the boundaries between 0 + is small, easy to extend. Disadvantages: ( 1) Rely on long distance transmission line direction grid electricity, prone to transmission line loss, voltage sag, reactive power compensation and other issues. ( 2) Large centralized solar access to new features, such as low voltage across, IVRT) 。 2. Characteristics, advantages and disadvantages of distributed photovoltaic characteristics: convert solar energy directly into electrical energy system follow the power generation, to the nearest nearby distributed generation (dg), conversion and use of the principle of nearby nearby. Advantage: ( 1) Distributed photovoltaic power generation system is not subject to regional restriction, can local ease the power shortage of remote mountainous areas and islands, etc. ( 2) Distributed photovoltaic power connected to the power distribution network, this requires energy produced in the local consumption as much as possible, in order to reduce the power loss in the process of transmission. Disadvantages: ( 1) Connection of distributed photovoltaic system to transmit electricity to power grid, lead to the trend of the complex distribution network ( 2) Access shame influence of distributed photovoltaic system sensitivity and reliability of the unidirectional protection ( 3) Distributed photovoltaic system brings to the traditional distribution network operation and maintenance difficulties.