Application Scenarios of Energy Storage Batteries

Application Scenarios of Energy Storage Batteries

  1. Application of energy storage battery in grid connection of renewable energy

The intermittence and variability of renewable energy power generation and the increasing penetration rate pose severe challenges to the normal operation and dispatch of the existing power grid system. In recent years, in order to utilize renewable energy as much as possible and improve the reliability and efficiency of grid operation, various energy storage technology research and engineering demonstration projects have been developed rapidly. Large-capacity energy storage battery technology applied to wind power and photovoltaic power generation can smooth power output fluctuations, reduce the impact on the power system, improve the ability of power stations to track planned output, and supply backup energy for construction and operation of renewable energy power stations.

  1. Application of energy storage batteries in grid auxiliary services

Grid auxiliary services are divided into capacity-based services and power-based services. Capacity type services must reach a certain amount of energy storage, usually between 1 and 500MW. Discharge time greater than 1 hour; power-based services such as FM assist and voltage support require the battery to have a large power or voltage output for a short period of time. Energy storage battery technology can reduce the loss of traditional frequency modulation power supply caused by frequent switching, thereby improving the frequency modulation capability of the power grid; in the process of improving the peak regulation capacity of the power grid, the energy storage system can be timely and reliably based on changes in power supply and load instructions Respond to scheduling and change output levels according to instructions.

  1. Application of energy storage battery in power grid transmission and distribution

Energy storage battery systems can improve the quality and reliability of power distribution. When the distribution network fails, it can be used as a backup power supply to continuously supply power to users. In terms of improving power quality, it is used as a system controllable power supply to control the power quality of the distribution network, eliminate voltage sags, harmonics and other problems, and at the same time reduce the expansion investment of the backbone network and save expansion funds.

  1. Application of energy storage battery in distributed and micro grid

The microgrid system requires an energy storage device, and the energy storage device must perform the following operations: when off-grid and distributed power cannot be supplied, supply short-term uninterrupted power; meet the needs of microgrid peak regulation; can improve the power quality of the microgrid; can complete the black start of the microgrid system; balance the output of intermittent and fluctuating power sources, and effectively control both power loads and thermal loads. The energy storage battery system has the characteristics of dynamically absorbing energy and releasing energy in time. As a necessary energy buffer for the microgrid, it can improve power quality, stabilize network operation, optimize system configuration, and ensure the safe and stable operation of the microgrid.

  1. Application of energy storage battery on the user side

Energy storage on the user side mainly includes industrial and commercial peak-shaving and valley-shaving and demand-side response. The combination of batteries and power electronics can provide users with reliable power supply, improve power quality; and use the difference between peak and trough prices to save users.

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