Characteristics of distributed photovoltaic power generation
1. The output power is relatively small. Generally speaking, the capacity of a distributed photovoltaic power generation project is within a few kilowatts.
Unlike centralized power plants, the size of photovoltaic power plants has little impact on power generation efficiency, and therefore has little impact on their economic viability. The investment return rate of small photovoltaic systems is not lower than that of large ones.
2. Low pollution, outstanding environmental benefits. Distributed photovoltaic power generation projects generate no noise and do not pollute the air and water during the power generation process.
3. To some extent, it can alleviate the local electricity shortage situation. However, the energy density of distributed photovoltaic power generation is relatively low, with a power of only about 100 watts per square meter of distributed photovoltaic power generation system.
In addition, the limited roof area of buildings suitable for installing photovoltaic modules cannot fundamentally solve the problem of electricity shortage.
4. It can generate and use electricity simultaneously. Large scale ground power stations generate electricity by boosting and connecting to the transmission grid, operating solely as power generation stations;
Distributed photovoltaic power generation is connected to the distribution network, where power generation and consumption coexist, and it is required to be consumed locally as much as possible.
Application of Distributed Photovoltaic Power Generation Projects
1. Industrial applications
Especially in factories with high electricity consumption and online shopping, the roof area of the factory is usually large, open and flat, suitable for installing photovoltaic arrays;
At the same time, due to the high electricity load, distributed photovoltaic power generation can achieve on-site consumption, offsetting some of the electricity purchased online, thereby saving users’ electricity bills.
2. Commercial applications
The difference between commercial buildings and industrial areas is that commercial buildings often have cement roofs, which are more conducive to installing photovoltaic arrays.
However, there are often requirements for building aesthetics, and installation is carried out according to the characteristics of service industries such as commercial buildings, office buildings, hotels, and conference centers.
The user load is generally higher during the day and lower at night, which can better match the characteristics of photovoltaic power generation.
3. Residential applications
Residential areas have a large number of available roofs, including self owned residential roofs, vegetable greenhouses, fish ponds, etc. Residential areas are often located at the end of the public power grid and have poor power quality. Building distributed photovoltaic systems in residential areas can improve electricity security and power quality.
