The completion of large-scale independent energy storage projects connected to the grid only means that the engineering construction has come to an end; What truly determines the value of a project is whether it can withstand the test of actual operating conditions during continuous operation.

As of now, the Shanxi Pianguan 100MW supercapacitor hybrid energy storage independent frequency regulation project, which is provided with core equipment and system solutions by Jinchao Times, has been running continuously for 7 months. During the project operation phase, the daily average number of system actions exceeded 2000, the daily K value remained stable at 5.5 or above, and the daily adjustment mileage exceeded 20000 MW. For independent frequency regulation scenarios, these operational performances not only reflected the stable operation status of the project, but also verified the practical application value of the supercapacitor+lithium battery hybrid energy storage technology route in high-frequency frequency regulation scenarios.

For today's era, the significance brought by a 7-month operation is not only the continuous and stable operation of the project, but more importantly, it verifies a series of technical judgments adhered to in the project planning stage: in the scenario of independent energy storage frequency regulation, only by allowing different energy storage technologies to undertake their respective best tasks can we balance responsiveness, operational reliability, and full lifecycle value.

The sustained performance after operation reflects the potential application of hybrid energy storage solutions

In recent years, with the continuous increase in the installed capacity of new energy, the demand for frequency regulation resources in the power grid has been constantly increasing. At the same time, the application scenarios of independent energy storage projects are also undergoing changes.

Compared to traditional energy storage applications, frequency modulation scenarios have the characteristics of frequent actions, high response speed requirements, and complex operating conditions. If relying solely on a single energy storage technology to undertake high-frequency regulation tasks for a long time, it is easy to face challenges in terms of cycle life, operational efficiency, and long-term reliability. Therefore, more and more projects are starting to focus on one issue: how to divide labor reasonably according to the characteristics of different energy storage technologies, rather than letting one technology undertake all tasks.

The Shanxi Pianguan project adopts a hybrid energy storage technology route of supercapacitors and lithium batteries under this idea. Among them, the 60MW/30s double-layer supercapacitor system is responsible for high-frequency and fast power regulation, while the 42MW/42MWh lithium battery system is responsible for energy support tasks. The two types of energy storage technologies work together to meet the needs of independent frequency regulation scenarios.

The continuous operation performance of the project shows that this design concept of technical division of labor for application scenarios has withstood the verification of actual operating conditions.

Targeting frequency modulation scenarios, hybrid energy storage achieves complementary technological advantages

For large-scale energy storage projects, operational data itself is not the ultimate goal, but more importantly, understanding the technical logic reflected behind the data.

During the operation of the Pian Guan project, the system maintains high-frequency operation capability while maintaining stable frequency regulation performance. This means that supercapacitors can continue to undertake fast and high-frequency power regulation tasks, while lithium batteries can focus on energy support. The two types of energy storage devices operate in synergy according to their respective advantages, rather than replacing each other.

For today's era, this is also one of the most important gains after the project enters the stable operation stage. We always believe that in the independent energy storage frequency modulation scenario, the value of supercapacitors is not to replace lithium batteries, but to fully utilize their fast response, high power density, long cycle life and other characteristics, and complement the advantages of lithium batteries.

The continuous operation of the Pian Guan project further demonstrates that when the energy storage technology roadmap is based on the requirements of application scenarios rather than on the performance of a single device, the overall operational effect of the system can be more fully utilized. This is also of great significance for hybrid energy storage solutions compared to single technology routes.

Practice at the 100MW level to demonstrate the application value of supercapacitors

The true application of technological routes to large-scale projects relies on the support of core equipment capabilities.

In the Pianguan project, Jinchao Era focuses on the core technology equipment of supercapacitors, providing technical support for the project and participating in the construction of a 100MW level hybrid energy storage frequency modulation scheme. From the core technology research and development of supercapacitors to product design that meets the needs of large-scale energy storage applications, today's era always adheres to technological innovation around application scenarios, rather than simply pursuing individual performance indicators.

This approach also runs through the entire technical roadmap design process of the Pian Guan project. After the project entered the stable operation phase, we became even more determined that for future independent energy storage projects, what is truly worth paying attention to is not only the project scale, but also whether the technical route can adapt to long-term operation.

From a single project to large-scale application, promote the expansion of hybrid energy storage solutions

The implementation and stable operation of the Pianguan project is an important practice of supercapacitor hybrid energy storage technology in the 100MW level independent frequency regulation scenario.

The project proves that the synergistic application of supercapacitors and lithium batteries can fully leverage the advantages of different energy storage technologies, providing new technological paths for high-frequency regulation and high reliability operation of energy storage application scenarios. For future independent energy storage projects, customers are not only concerned about the scale of construction, but also the degree of matching between technical solutions and application scenarios, the ability of equipment to operate continuously, and the long-term performance of project benefits.

With the continuous promotion of the construction of new power systems, energy storage projects have put forward higher requirements for system stability, technical economy, and operation and maintenance guarantee capabilities. In this era, we will continue to focus on the innovation of core supercapacitor technology, promote the implementation of mature technology routes in more application scenarios, and provide customers with safer, more efficient, and reliable supercapacitor hybrid energy storage solutions.Editor/Cheng Liting