Shengyang Power: Advanced lead charcoal battery energy storage system solution

　　Author ：Iflowpower – Portable Power Station Supplier

The renewable and sustainable development of energy is the opportunities and challenges of the 21st century. The construction of my country's strong smart grid has a large number of demand for energy storage systems. First, the output power of the renewable energy such as wind energy, solar energy is affected by the natural environment, and there will be randomness and intermittent fluctuations.

Second, with the new amount of electricity, the length of the day and night peak valley consumed is increasingly expanded. More and more industrial companies with highly automated production lines and services involving information, users in the security field have higher requirements for power quality of load side. The energy storage can make energy with adjustability, not only in power generation, transmission, substation, distribution, electricity and other links, etc.

, it also has wide application in the microgrid. When running in grid, the energy storage system is important to play flexible adjustment and smooth fluctuations; when running in the network, the energy storage system can act as the main power of the microgrid, maintain the voltage and frequency of the microgrid, and ensure the stability of the microgrid. run.

At present, the energy storage system has been widely used in domestic and foreign microgrid projects. The energy storage system can effectively improve the connection capacity of clean energy, support the safe operation of the power grid, and implement user demand side management, improve power equipment utilization, and decrease Power supply costs, becoming an important part of intelligent microgrid. Lead-acid battery energy storage failure mode and optimization measures of FCP lead charcoal cells In typical preparation applications, the important failure mode of lead-acid batteries includes a positive electrode plate grid corrosion, a negative electrode active substance of sulfate and electrolytic solution.

In the circulating charge application of the grid-level energy storage system, the important failure mode of the lead-acid battery includes a positive electrode plate grid corrosion, an active substance softening, and a negative electrode active substance of sulfate. Shengyang power supply and the strategic cooperation of Japanese River Battery Co., Ltd.

introduced the international leader's FCP lead charcoal batteries produced by the international leader, adopted the following optimization measures, revolutionized the battery's cycle life of 70% D0D to more than 4,200 times, with Advanced lead charcoal technology, excellent manufacturing process and excellent system integration technology, the cycle life of high-voltage battery packs (600V) in the energy storage system can also reach more than 3,500. 1) The new type of corrosion-resistant alloy, improves the corrosion resistance of the grid; 2) Special plate active material formulation and special additive, reduce the softening rate of the positive electrode active material, improve the number of positive electrode cycles; 3) Adopt advanced carbon material Negative electrode additive, increase charging acceptance ability, reduce negative electrode sulfate, more suitable for use under partial charge state (PSOC); 4) Novel electrolyte formula and special additive, reduce battery internal resistance, improve charge and discharge efficiency and relieve electrolysis Liquid moral and negative electrode sulfate; 5) Adopt advanced manufacturing techniques and rigorous manufacturing processes to ensure consistency and reliability of products. Key indicators in the energy storage market: Most energy storage technology of the electricity cost is too high at the cost per kW or each kilowatt, hindering the wide adoption of the energy storage.

Although the traditional lead-acid battery is low, it does not have advantages due to shorter cycle life, and the energy cost of the energy storage system does not have advantages; the lithium-ion battery can achieve thousands of cycle life, but due to monomer capacity Small, a large number of monomers have a substantancy life of the battery pack, and the high-voltage battery pack (600V) 80% DOD used in the energy storage system is 200 times is a high threshold. The energy cost in the energy storage system is still more high. With excellent circulating performance, the FCP lead-carbon battery has a substantially reduced electricity cost to approximately 1/2 of the lithium ion battery, and 1/3 of conventional lead-acid batteries, as follows, considering battery charge and discharge energy conversion loss and residual value, On the basis of uncertain transportation and occupation costs, the economic comparison of conventional lead-acid batteries, lithium-ion batteries and FCP lead carbon batteries in energy storage systems.

With the size of the energy storage system, the FCP lead carbon battery is expected to reduce the cost of electricity to 0.4 yuan, and it can be seen that the cost performance ratio of FCP lead charcoal cells is excellent in cost performance, economic lead, and is the energy storage system. Renewable energy access, load area peaks in the load area, the scale application of microgrid storage is supplied.

Typical case 1: Renewable energy smooth access Lin Yang headquarters microfrigence system by 2MWP roof photovoltaic, 76kwp car shed photovoltaic, 10KW fan, charging pile, 500 / 500KWH battery energy storage system (where: 250KW / 250KWH lead carbon battery energy storage system ), Compose, high-efficiency variable flow and control equipment, and advanced microgrid energy management system, automatic control, protection and management. The system can maximize control indicators that utilize distributed power generation and exert energy efficiency, implement adjustment control policies, and implement two-way interaction with external grid and systematic operation. Typical Case 2: Load Zone Mountain Fill Valley High Density Multi-access Point Building Photovoltaic Systems Network and Distribution Network Coordination Key Technologies Tickets 863 Advanced Energy Technology Field Intelligent Power Grid Major Six - High Density Multi-access Point Building Photovoltaic System The coordination of the grid and distribution network, which is headed by the electrical industry of the Chinese Academy of Sciences, my country Institute of Electric Science, Tianjin University, Shanghai Electric Power Institute and other domestic research institutions and outstanding companies, last research and development.

The topic relies on 20MW high-density, multi-access point building photovoltaic demonstration project, mastering the key technology and core equipment of grid-connected control, power quality adjustment, system security, energy management, forming high-density building photovoltaic system and matching Technical system for coordinated operation of the grid, supply technical support for my country's large-scale promotion area distributed grid-connected power generation system. As the key assessment of the key assessment, the battery energy storage system (1MW / 500KWH), a tube-type colloidal battery container storage system (1MW / 500KWH), modular design, realized energy storage The system is integrated, integrated, distributed, distributed, 1MWH, maximum output power up to 2MW. Typical Case 3: Microcontrol News Shanghai Electric Power Academy Intelligent Microgrid Demonstration and R & D Center Shanghai Electric Power Institute Intelligent Microgrid Demonstration and R & D Center Construction Project is a key construction project of Shanghai Electric Power School 085 Project, which is located in the Shanghai Electric Power School Yangpu North Campus ( No.

2588, Changyang Road, will make full use of the roof of the campus and install a certain capacity of photovoltaic power generation and wind power system, and access micro gas turbine, energy storage device, electric vehicle charging station, simulate diesel power generation system, and large The grid is set up for the campus load, the project is planned to build photovoltaic 222.75kW, wind power 10kw, 55KW, simulated kimona 50KW, access load 208KW, energy storage system size 300KW (where: 100KW / 500KWH lead carbon battery energy storage system ), In addition, intelligent electricity system interaction intelligent electricity system is implemented in the graduate dormitory building. Future foreground energy storage as a key determinant of energy supply systems based on reliable and economic benefitable renewable energy.

Shengyang power supply lead charcoal battery energy storage system, can be fully applied to distributed, scale energy storage systems including renewable energy access, peak-filled valley, microgrid. With its excellent cycle performance and excellent group performance, the cost of electricity is directly pumping energy storage, supplying currently cost-effective chemical power supply scale energy storage system solutions, in reasonable integration support policies, greatly improve subsidy funds On the basis of efficiency, the scale storage can enter the new stage of commercial operations.