Distributed energy system is mainly for the production of relatively large power plants or large power grids. Through the integrated application of an energy conversion technology, it provides multiple terminal energy sources such as electricity, heat, and cold in an area to achieve energy efficiency. Cascade utilization and efficient utilization.
The distributed energy utilization system can integrate various energy configurations to optimize them, and achieve a win-win situation for users, gas and power companies, environmental protection, resource conservation, and investment efficiency. Has the following advantages:
One is high efficiency, which is conducive to promoting the comprehensive utilization efficiency of energy, which can be as high as 90% or more;
The second is environmental protection, especially the heat, power, cold, and co-generation systems fueled by natural gas, fuel cells, and renewable energy, which are conducive to decentralizing and resource utilization of some pollution, striving to achieve the goal of moderate emissions, and curb climate warming;
The third is the diversity of energy utilization. On the one hand, the “input energy” as a fuel can be widely selected or even mixed and matched according to the needs of the unit; on the other hand, the “output energy” can meet the owner's multiple needs for heat, electricity and cooling.
Fourth is the flexibility of site selection. The distributed energy utilization system distributed cogeneration of heat, power and cooling. Because of its small footprint, office buildings, shopping malls, hotels, schools and other buildings can be located in the basement. There are no many limiting factors for the site selection of large thermal power plants.
Fifth, it is complementary to the large power grid. On the one hand, distributed energy can play a role in peak shaving to a certain extent; on the other hand, it can reduce transmission and distribution investment; finally, when natural disasters occur, it can flexibly play a role in Complementary expertise.
In the development and utilization of distributed energy, four main entities are involved. One is the government. The government is the leader and promoter of the development of distributed energy. The healthy and rapid development of distributed energy is inseparable from government policy support and supervision; The owner invests in the construction of a distributed energy system and uses the main body of the system; the third is a gas company or other energy supply company, which provides “input energy” for the distributed energy system; the fourth is a grid company, which must provide for the distributed energy system Standby is to provide power support or supplement for the continuous operation of distributed energy. When surplus power appears, the surplus power must be recovered. It can be said that the company plays an irreplaceable role in the development and utilization of distributed energy. Distributed energy users, on the one hand, need to perform universal service obligations, provide them with backups, and make up for the electricity gap; on the other hand, they need to comprehensively dispatch their on-grid power to ensure safe and stable power supply. Users need to provide adequate power supply according to their own power generation capacity changes. Distributed energy users operating in isolated grids in remote areas need to provide guidance on safe power use.