What is distributed power? Classification and advantages of distributed power generation technology. The distributed power system does not simply adopt traditional power generation technology, but is based on new technologies such as automatic control systems, advanced material technology, and flexible manufacturing processes. It has low pollution emissions, flexibility and convenience, high reliability and Highly efficient new energy production system.

　　What is distributed power?

　　Distributed power supply: refers to an independent power supply with a power of several kilowatts to 50MW, small modular, and compatible with the environment. These power supplies are owned by power authorities, power users or third parties and are used to meet the specific requirements of the power system and users. Such as peak shaving, supplying power to remote users or commercial and residential areas, saving investment in power transmission and transformation, improving power supply reliability, etc.

　　Construction, installation, and operation of power generation facilities at or near the user's site that are mainly self-consumption on the user side, with excess electricity connected to the grid, and balanced regulation of the distribution network system, or energy comprehensive cascade utilization multi-generation facilities with power output. Including solar energy, natural gas, biomass energy, wind energy, geothermal energy, ocean energy, comprehensive utilization of resources for power generation, etc.

　　In terms of grid connection, a green channel will be opened for the connection of distributed power sources to the grid and all preferential conditions will be provided; for distributed power projects built in users' internal premises, all the power generated can be online, all for self-use, or the remaining power for self-use can be online for users to choose. , the user's insufficient power is provided by the power grid.

　　In terms of price settlement, when distributed power is connected to the grid, the electricity on and off the grid is settled separately, and the electricity price follows relevant national policies. For distributed photovoltaic power generation and wind power projects, the company provides free gateway measurement devices and energy meters for power generation measurement, and does not charge system reserve capacity fees. The power generated by distributed power sources can be used entirely for self-use or the remaining power can be put online at the user's choice. The power grid will provide the user with insufficient power. The on-grid and off-grid electricity are settled separately, and the electricity price follows relevant national policies.

　　Advantages of distributed power

　　(1) Economy: Since distributed power generation is located on the user side and close to the load center, the construction cost and loss of the power transmission and distribution network are greatly reduced; at the same time, the planning and construction period of distributed power generation is short, investment returns are quick, and investment risks are smaller. ?

　　(2) Environmental protection: Distributed power generation can make extensive use of clean renewable energy, reducing the consumption of fossil energy and the emission of harmful gases. ?

　　(3) Flexibility: Distributed power generation systems mostly use small and medium-sized modular equipment with advanced performance, which can be quickly started and shut down, convenient for maintenance and management, and flexible in adjustment. Each power source is relatively independent, which can meet the requirements of peak shaving and valley filling, and power supply to important users. etc. different needs. ?

　　(4) Safety: The distributed power generation system has various forms of power generation, which can reduce the dependence on a single energy source and alleviate the expansion of the energy crisis to a certain extent; at the same time, the distributed power generation locations are dispersed and are less susceptible to unexpected disasters or emergencies. impact, with the potential to withstand large-scale power outages.

　　The power generation system that makes up the distributed energy system has the following characteristics:

　　① Efficiently utilize the waste energy generated by power generation to generate heat and electricity;

　　② On-site renewable energy system;

　　③Including energy recycling system that uses on-site waste gas, waste heat and excess pressure difference to generate electricity

　　Distributed power generation technology classification and advantages

　　Distributed power generation refers to the configuration of smaller generating units (generally less than 30MW) at the user site or close to the power consumption site to meet the needs of specific users, support the economic operation of the existing distribution network, or satisfy both aspects at the same time requirements. According to the different primary energy sources used, distributed power generation can be divided into distributed power generation technology based on fossil energy, distributed power generation technology based on renewable energy, and hybrid distributed power generation technology.

　　Distributed power generation technologies mainly include: photovoltaic power generation, wind power generation, biomass power generation, gas turbine and tidal power generation, etc. At present, domestic and foreign development is mainly focused on the development of photovoltaic power generation and wind energy power generation. In particular, the technology research and development and market application of photovoltaic power generation have become relatively mature.

　　Compared with the traditional large-scale centralized power generation and distribution model, distributed power generation technology has the characteristics of independence, real-time control of the power quality and performance of the regional power grid, low investment, flexible installation location, short construction period, and high energy utilization rate. and low environmental pollution. The specific advantages are as follows:

　　1. Conducive to improving the distribution network's ability to accept distributed energy resources;

　　2. It can effectively improve the utilization rate of distributed renewable energy and provide corresponding power quality services according to actual application needs.

　　3. It can reduce the loss of distribution network and optimize the operation mode of distribution network;

　　4. It can ensure the power supply of key loads under power grid failure and improve the reliability of power supply;

　　5. Can be used to solve power problems in remote areas, deserts or islands.

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