How can energy storage help people improve the energy crisis due to energy shortage and rising electricity bills? What are the application scenarios for energy storage? Let’s take a look.
Reasons for requiring energy storage system
1、New energy power generation is unstable in terms of time and region, and needs to be smoothed through energy storage for better use
Wind power fluctuates greatly in the day, requiring short time and energy storage efficiency;
Scenery resources are distributed unevenly between regions and seasons, requiring long cycle energy storage and large capacity;
The startup and shutdown cost of thermal power units is high, which requires a large capacity of the grid for peak shaving in a day, and requires high energy storage efficiency and large capacity.
Thermal power frequency modulation
2、Power demand fluctuates in terms of time and region, so peak regulation and frequency modulation are required through energy storage.
The new energy power joining the power grid has higher requirements for frequency modulation, and the demand for energy storage has a fast response and high efficiency;
Ease grid congestion and demand high energy storage efficiency;
Reserve capacity, high and stable demand energy storage, long cycle.
3、End users always pursue a more stable and economical power supply scheme.
There is arbitrage space for peak valley electricity price difference, and the demand for energy storage is efficient;
Respond to unstable power supply/terminal of the power grid, stable demand energy storage, and long period;
Standby power supply for communication base station, stable energy storage, fast response and long cycle.
Application scenario decomposition
1、Power generation side
Daily peak shaving of thermal power: peak shaving and valley filling of power load can be realized by energy storage.
Daily peak shaving of new energy power: meet the grid connection requirements by configuring energy storage in wind and photovoltaic stations.
Reduce wind and light discarding: store the wind and light discarding electricity of renewable energy and then move it to other periods for grid connection, so as to improve the utilization rate of renewable energy.
2、Grid side
System frequency modulation: new energy power is integrated into the power grid, which challenges the existing frequency modulation system, and energy storage frequency modulation is more economical/efficient.
Mitigating grid congestion: when the line is blocked, the electric energy that cannot be transmitted can be stored in the energy storage equipment. When the line load is less than the line capacity, the energy storage system will discharge to the line.
Standby capacity: reserved for ensuring power quality and safe and stable operation of the system in case of emergency.
3、User side
Off grid operation: use distributed photovoltaic power generation to make better use of new energy power through energy storage.
Peak valley price difference arbitrage: charge the energy storage system when the electricity price is low and discharge the energy storage system when the electricity price is high, so as to realize the peak valley price difference arbitrage and reduce the electricity cost.
Standby capacity: in case of emergency, in order to ensure the safety of their own electricity use.
Capacity cost management: industrial users can use the energy storage system to store energy in the low ebb and discharge in the peak load, thereby reducing the overall load and reducing the capacity charge.
SCU focuses on user side energy storage. Distributed PV and energy storage is a good application direction. The significance of distributed PV power generation and energy storage lies in the following three points: ① The configuration of energy storage can improve the proportion of self use and increase the revenue of photovoltaic power generation. ② Use the peak and valley electricity price mechanism to reduce the power consumption cost of users by cutting peak and filling valley. ③ Demand electricity charge management. In addition to the aforementioned functions of improving power quality, peak shaving and valley filling, the configuration of the energy storage system can also realize uninterrupted power supply, dynamic capacity expansion, response to power dispatching and other functions.
If you have factory and have been installed photovoltaic, welcome to contact us to get the PV plus storage proposal.