Technical Services/Products

Based on the architectural characteristics, distribution system architecture and load characteristics of rail transit, build the photovoltaic storage and direct-supply system scheme for rail transit. Based on the typical building form, build the photovoltaic system scheme for each typical building of rail transit (including system architecture, capacity, equipment selection, technical parameters, etc.); on this basis, combined with the capacity of photovoltaic power generation, peak and valley electricity price and load operating characteristics, etc., formulate the configuration scheme for energy storage in the typical building of rail transit, realize the peak shifting within the distribution system, reduce the cost of electricity consumption and improve the capacity of photovoltaic power generation in the building. At the same time, combined with the power distribution system architecture and load characteristics, the DC power distribution system of rail transit takes advantage of the scheme to reduce the conversion loss of the power distribution system and improve the security of the single; finally, it synthesizes the situation of photovoltaic power generation, energy storage and power equipment, and combines the network source measurement and the load side to realize the dynamic adjustment, and develops the flexible power consumption scheme applicable to rail transit. Ultimately, the proposed rail transit "optical storage, direct and flexible" integrated system solution will increase the proportion of new energy use, assist in the construction of a new type of power system, and realize the carbon reduction goals of the energy side, load side and the construction of near-zero-carbon buildings.

Technical features and advantages/innovations

It is the first time that DC distribution system control technology is used in urban rail transit to comprehensively coordinate distributed photovoltaic power generation and energy storage, and combine with flexible loads at the end to improve the overall operation efficiency of the system, flexibly consume renewable energy, maximize the use of clean energy, and initially estimate a carbon reduction of more than 25%.

Application/Scenario

Photovoltaic application: The total installed capacity of Yuzhu Vehicle Section reaches 5MWp, and the average annual power generation is expected to be 4.5 million kWh, which is one of the largest urban rail transit photovoltaic projects in the country;

DC application: DC lighting research results have been applied to Suzhou Metro Line 5, and a pilot station DC power distribution system will be applied to Guangzhou Metro Line 22.