Fujian Province’s first station-type microgrid new power system demonstration project completed and put into operation

Recently, Fujian Province’s first demonstration project of a new type of power system for microgrids was officially put into operation. The project was constructed by State Grid Fujian Electric Power, and adopted Contemporary Nebula’s shared energy storage solution for microgrids in the town.

Xiangyun town is located in the western part of Nan’an city, with abundant light resources throughout the year, and more than 2/3 of the distribution transformers in the town have distributed PV power generation access. 13 million degrees of PV power generation and 12 million degrees of hydroelectric power generation will be generated in Xiangyun town in 2021, and the proportion of green energy in Xiangyun town’s annual electricity consumption will be as high as 92.59%.

In order to locally solve the problem of photovoltaic power consumption, as well as due to the volatility of photovoltaic power generation generated by the voltage bidirectional overrun, voltage fluctuations and flicker, harmonic overrun, three-phase imbalance and other issues, Nan’an Municipal Electricity Supply Bureau selected Xiangyun Town of the four platforms for the pilot were configured with the storage sub-systems, the construction of the platform area-type microgrid new power system demonstration project.

The station-type energy storage sub-system can store excess PV power in the distribution network station area, and after meeting the balance of local power supply and demand, connect the excess power to the power grid, so as to solve the problem of PV power consumption locally. At the same time, the energy storage system can also achieve 100% qualified power quality of distribution network station area, increase capacity of station area flexibly, improve power supply reliability, and provide short-time guarantee power supply for important loads.

For villagers who have installed photovoltaic power generation devices, on the one hand, they can obtain subsidies for photovoltaic power generation kWh, and on the other hand, they can sell the excess electricity to the grid company for a fee to obtain feed-in tariffs, which will help to increase income while contributing to energy conservation and emission reduction.

Contemporary Nebula’s shared energy storage system adopts an integrated box design, which integrates battery cabinets, PCS, DC/DC, monitoring system, fire protection system, power distribution system, air conditioning, etc. The DC/DC can be controlled by constant voltage/current/power and sag, and used in parallel with other sub-systems to form a shared energy storage system for the power distribution network. The DC/DC can be used in parallel with other station energy storage sub-systems to form a shared distribution network station energy storage system, promoting the efficient use of energy storage resources.

With the promotion of the national “double carbon” strategy, the proportion of rural distributed new energy to be connected to the grid will be gradually increased. The successful application of Contemporary Nebula’s shared energy storage system in Xiangyun Town’s new microgrid power system demonstration project has created a typical case of lithium battery energy storage system’s ability to promote energy consumption, energy saving and emission reduction, and income generation in rural areas with a high proportion of distributed new energy grid-connected scenarios.

Contemporary Nebula will persist in technological innovation and provide multi-scenario lithium battery energy storage solutions to help build new power systems and achieve the goal of “double carbon”.