Microgrid energy storage system

With the increasing proportion of wind power, photovoltaic and other new energy sources in the energy structure, and the rapid decline of the cost of power lithium batteries, the application scenarios of electrochemical energy storage in peak-valley price arbitrage, new energy grid-connection and power system auxiliary services are constantly being developed and promoted. Now most industrial households of provinces and cities have implemented peak and valley electricity system, energy storage is used for peak and valley price arbitrage, which can reduce the enterprise power cost. When energy storage batteries are used for peak-valley price arbitrage, the payback period mainly depends on the peak-valley price difference and battery system cost. In the future, the peak-valley price difference is expected to gradually strengthen, and the cost of lithium batteries will further decline, and the arbitrage space will gradually increase, which is expected to accelerate the application of energy storage in the field of industrial peak-valley price arbitrage. Wind power and photovoltaic power generation fluctuate greatly. In order to reduce frequency fluctuation of the power grid, wind and light abandonment are often generated, resulting in low utilization rate of new energy. The introduction of energy storage system can play a role in smoothing wind-power output and energy scheduling, so as to improve the utilization rate of new energy power generation. Energy storage can be applied in all aspects of the whole power system, including: in the power generation side, it can improve the stability of power generation, improve the power quality, so as to promote large-scale grid connection of renewable energy; In the link of power transmission and transformation, it can reduce the cost of power transmission and transformation. In the link of electricity distribution, it can ease the initial investment in power distribution and the upgrade and expansion of the grid. On the user side, the peak-valley difference can be arbitraged to improve the power quality of the user and reduce the power cost of the user. Today, the author introduces the configuration of micro-grid energy storage system.

Product Name: Energy Storage System

Product brand: Huannu Electric Power

Product specification: 90kw-3h-270kwh

Cell type: lithium iron phosphate

Rated battery capacity: 270kWh

Charge and discharge ratio: ≤0.5C

Fire safety configuration: aerosol, combustible gas detection + exhaust air

Communication: RS485/CAN

Power grid voltage range: 360~440V

Rated network frequency: 50/60Hz

Power network frequency range: 45~55Hz, 55~65Hz

Application scenarios: peak cutting and valley filling, backup power supply, microgrid