Convergence: Contravariant new “forces”

Convergence: Contravariant new “forces”

As the proportion of renewable energy such as photovoltaic continues to increase, energy storage is becoming an indispensable role in the construction of new power systems.

Not long ago, the National Energy Administration announced the energy storage projects and technologies for 2022. By the end of 2022, the installed capacity of new energy storage projects in China has reached 8.7 million kilowatts, with an average energy storage time of about 2.1 hours, an increase of more than 110% over the end of 2021.

Up to now, 26 provinces and cities in the country have planned new energy storage installation targets during the “14th Five-Year Plan” period, with a total scale of nearly 70.55GW. Among them, 100-megawatt projects have become the norm, and more than 20 100-megawatt projects have realized grid-connected operation, five times the number of the same period in 2021; More than 400 100MW projects are planned and under construction, including 7GW projects.

It is expected that by 2027, China’s energy storage market will enter the T-watt era.

Obvious fusion trend

With the outbreak of the energy storage market, the fusion trend of light storage has come. Since the second half of 2022, domestic landscape storage integration bidding projects have increased significantly. On November 11, the Ministry of Industry and Information Technology, the Ministry of Housing, the Ministry of Transport, the Ministry of Agriculture and Rural Affairs, and the National Energy Administration jointly issued the “Notice on the third batch of smart photovoltaic pilot Demonstration activities.” It is emphasized that we should support the cultivation of a number of smart photovoltaic demonstration enterprises and support the construction of a number of smart photovoltaic demonstration projects, and one of the priority directions is light storage integration. Self-storage and self-use of households light storage integration of important market direction.

Not only that, in the past two years, on the basis of light storage integration, charging piles have also joined the “combination”. At present, China has become the world’s largest electric vehicle market, compared with the rapid development of electric vehicles, charging infrastructure construction speed is slow, resulting in a huge charging pile gap. The rapid development of new energy power generation and electric vehicles provides a good opportunity for the integrated development of “photovoltaic + energy storage + charging”.

The integrated optical storage and charge power station can use the energy storage system to store energy at night, and supply power to the charging station through the energy storage power station and the grid together during the charging peak. It can not only cut the peak and fill the valley, but also save the cost of distribution and capacity increase, and effectively solve the intermittent and unstable problems of new energy power generation. This creates a microgrid of photovoltaic, energy storage and charging facilities.

New models generate new market demands

Optical storage fusion and optical storage and charge integration are becoming important joints of new power systems.

Light storage fusion is not a simple combination of photovoltaic system and energy storage system, but to rely on the deep integration of technology in order to achieve the maximum efficiency and economy of the energy storage system. For example, before the construction of the project, you can adjust the type of energy storage inverter, battery type, energy management system and other aspects according to the technical conditions and the location of the project, to improve the operation efficiency and income of the project.

To maximize the benefits of the system and minimize the cost of electricity, the innovation of inverter technology is the most important thing.

As far as light storage integration is concerned, the combination of photovoltaic and energy storage can not only do a simple patchwork, but make the rigid power grid system flexible through the application of peak regulation, frequency modulation, and load transfer. Under such a technical premise, photovoltaic inverters need more powerful energy management functions.

The first is the photovoltaic energy storage management function. The importance of energy storage for large-scale grid-connection of new energy sources such as photovoltaic is self-evident. The application of the optical storage system further drives the evolution of the inverter to the power station energy management center. Second is the security management function. Dc arc detection, quick module shutdown and protection skills of inverters have evolved the safety protection of photovoltaic power plants from passive to active. At the same time, automatic monitoring and early warning operation and maintenance management functions and microgrid management functions will also become standard.

Inverters play a “central” role in photovoltaic, energy storage and microgrid systems, which is crucial to the power generation capacity, safety and reliability of the system. Inverter head enterprises that have been deeply engaged in the photovoltaic field for many years have innate advantages in generating power energy storage.

In addition to the technical origin, their experience accumulated in the most front-end applications, user insights and data analysis capabilities can better “feed” the development and improvement of energy storage products and solutions. For example, Aishiwei’s domestic shipments reached about 7GW last year, and even surpassed the traditional leading enterprises in the field of household use to jump to the first place, the practical application of these products produced enough samples and long-term data accumulation, the formation of the enterprise’s unique know-how, can provide better support for the reliability and stability of energy storage products.

Under the new market demand, light storage is undergoing new changes, and enterprises with comprehensive technology of light storage and charge are constantly making efforts, and are expected to become the backbone of this new market. How the market pattern will change in the future is worth looking forward to.

Post time: Jun-25-2023