In a power system, a station area refers to the power supply range or area of (one) transformer. The solution of " Station Area Power Supply" of Kortrong ESS effectively solves the problem of capacity limitation of grid access for the popularization of photovoltaic and electric vehicle charging stations in the whole county. It is another important measure for Kortrong ESS to promote the "dual carbon" strategy .

01Project background

Building a new power system with new energy as the main body is a major decision-making arrangement made by the Chinese government based on strengthening the construction of ecological civilization, ensuring national energy security, and achieving sustainable development. It has great strategic significance for the transformation and development of the power industry and power companies.

Compared with conventional power supply, new energy power generation has small capacity, large quantity, scattered distribution points, and has significant intermittent, fluctuating and random characteristics. With the large-scale development of new energy, a high proportion of on-grid, and gradually becoming the main body of power supply, the system's power balance, safety and stability control will face unprecedented challenges, and the traditional power system is difficult to effectively adapt.

Specific to the distribution station area, with the rapid development of distributed generation, the distribution network has shifted from passive to active, and the rapid development of new loads such as 5G base stations, station area side energy storage, and electric vehicle charging piles has brought new requirements to the construction and operation of the distribution station area.

02 Value and function

Energy storage value in distribution area:

1） Ensure the safe operation of the power grid: improve the power quality of the power grid, enhance the reliability of the power supply system, and reduce the probability of system failure

2） Improve the economic investment of the power grid: delay the investment in lines and transformers, delay the expansion and upgrading of the distribution network, and improve the investment economy of the power grid

3）Improve new energy consumption: The local strategy in station area realizes new energy consumption and improves the level of local consumption of distributed generation

4）Other social benefits: In the event of sudden failure or power outage maintenance of the main power grid, it can be operated off-grid and black start to ensure the normal operation of the load

App features:

Dynamic capacity increase, power quality control, peak shaving and valley filling, emergency power maintenance

03 Solution

Solution 1: The energy storage terminal sends the operation data to the terminal equipment through the network, and the terminal equipment synchronizes the data to the power supply service command system, and the power supply service system monitors the energy storage operation conditions in real time.

Solution 2: Optional SCR static switching device to achieve seamless switching within 10ms to ensure uninterrupted operation of the load during the switching process; it can replace UPS.

04 Product introduction: Station area power supply

1. Combined outdoor cabinet structure, protection level reaches IP55, flexible installation.

2. Cooperate with the transformer in the station area to solve the problems of short-term overload, three-phase imbalance, and insufficient passive power compensation.

3. Equipped with EMU, support docking with related platforms, and realize multi-platform interconnection.

4. Three-phase four-wire electrical design, support fast switching between on /off-grid.

Intelligent cloud platform

EMS reserves communication interfaces, remote scheduling, implementation control, supports 104, 61850 and other interface protocols, supports docking with related platforms, and realizes multi-platform information interaction.

Station Energy Storage Control System (Local EMS)

●Intelligent platform, support alarm push, operation and maintenance management, energy management, visual monitoring, remote fault diagnosis, remote operation and maintenance.

●Distributed storage and distributed computing technology are adopted to support massive distributed energy storage data storage.

●High-density data acquisition and storage, real-time data push, support remote and local linkage control.

●Customized for energy storage, data classification and extreme details.

●Fault hierarchical management, according to the cell operation data, start the response warning and processing means to ensure safety.

Energy storage cloud

●Combined with big data analysis and mining technology, the battery characteristic curve is generated to realize battery status prediction and early warning.

●Provide rich and diverse UI, such as computer web side monitoring screen, local terminal and other interfaces.

05 Layout of the whole industrial chain

The core components of Kortrong ESS products are independently developed to maximize the overall performance of the energy storage system, further reduce costs, and provide customers with continuous and reliable services.