Introduction

Power balance refers to the equal amount of electricity generated and consumed in the power system at any given time to ensure the stable operation of the power grid. Energy storage technology plays a crucial role in achieving power balance by storing excess electricity and releasing it when needed, thereby balancing supply and demand.

The Challenge of Power Balance

The uncertainty of power supply and demand is one of the main challenges to power balance. The volatility of renewable energy sources such as wind and solar energy increases the difficulty of power system scheduling. In addition, changes in electricity demand also require flexible adjustment measures.

Application of energy storage technology

Energy storage technology helps balance power supply and demand by storing electricity during low demand and releasing it during high demand. For example, lithium-ion batteries can be charged when there is excess power and discharged during peak demand, smoothing the power curve. In addition, pumped storage achieves power balance by storing water at a higher location during low periods and releasing hydroelectric power during peak periods.

Case analysis

In the German electricity market, energy storage technology is widely used for grid frequency regulation, ensuring the stability of the power system by quickly responding to changes in grid frequency. China’s wind farms also use energy storage systems to smooth wind power output and reduce impact on the power grid.

Conclusion

Energy storage technology plays an irreplaceable role in power balance. With the continuous advancement of technology and the decrease of costs, energy storage will become an important means to solve the problem of power balance, providing guarantees for the stable operation of the power system.