After the State Council reviewed and approved the "Air Pollution Prevention Action Plan," Tianjin is faced with the dual proposition of ensuring the development of electric power, meeting the demand for electricity supply, and fulfilling the goal of reducing emissions and environmental protection in the process of converting primary energy coal into secondary energy and electric power.
According to the environmental protection plan, Tianjin needs to reduce the total coal consumption by 10 million tons, so that the quality of the ambient air is significantly improved, the city's heavily polluted weather is greatly reduced, and the number of good days increases year by year. The concentration of fine particulate matter drops by more than 25% in more than three years.
However, during the 12th and 13th five-year period, Tianjin's electricity demand is expected to show sustained and rapid growth. It is necessary to increase the proportion of electricity purchased by Tianjin Power Grid in order to optimize the energy structure of Tianjin.
The limited power receiving capacity of the external power transmission channel of Tianjin Power Grid is about 5 million kilowatts, which cannot meet the power load demand in Tianjin. According to the State Grid Planning and Arrangement, Tianjin Electric Power Company promoted the 1000kV UHV AC projects in the Tin Mum-Nanjing, Mengxi-Tianjin South and Tianjin Nantes UHV substations. These projects are the transmission paths connecting Ximeng, Mengxi, Shanxi Energy Base and Beijing-Tianjin-Helu-Lu Load Center. Upon completion, they can add 5 million kilowatts of power capacity in Tianjin, and increase the annual electricity consumption by 20 billion kwh, saving coal. Consumption of 9 million tons will reduce emissions of 17.5 million tons of carbon dioxide, 44,000 tons of sulfur dioxide and 46,000 tons of nitrogen oxides, effectively improving regional air quality. At present, the feasibility study design of the Ximeng-Nanjing Exchange UHV project has been completed and approved by the National Development and Reform Commission. The feasibility study design for the UHV project of Mengxi-Tianjin South Exchange has been completed, and preliminary work such as the selection of the Tianjin Uchibo high-voltage line and the location of the Tianjin South UHV station has been completed.
Sino-Singapore Eco-city has connected 4500kw of Yunhekou wind power and built a microgrid with 30 kilowatts of photovoltaic, 6 kilowatts of wind power, and 15 kilowatts of 4-hour lithium-ion battery storage capacity in the business hall. Invested in the 110KV smart substation of Hechang Road, completed the distribution automation master station and 35 switchgear stations, 19 distribution automation 10kV cable outlets, installed and deployed power quality monitoring and equipment condition monitoring system, and built a visualization platform.
In conjunction with the construction of eco-city and industrial development, Tianjin Power reinvested in the construction of five 10 kV outlets and 20 switching stations. For the newly built and completed residential areas in the Eco-City during the year, the installation of power optical fiber will provide technical conditions for the residents to use smart electricity. The Eco-City will also construct two 220 kV and four 110 kV smart substations to form nearly 30 10 kV double ring network intelligent distribution networks to meet the needs of eco-city 20% clean energy access, with reliable power supply. 99.999%. Under this model, Tianjin will build a strong smart grid in the city, and the level of power supply will rank among the top cities in the world.
In February 2012, the Tianjin Municipal Government Office Conference adopted the “Tianjin Pure Electric Bus Demonstration and Promotion Implementation Plan†to determine the plan to run 2000 pure electric buses by 2015. The power company accordingly promoted the construction and management of electric vehicle charging and replacing facilities.
Up to now, there are 7 charging stations and 407 AC charging stations in Haitai, including Haitai, Puji River, Huaming, Menggang Post, overhaul base, Yongdingzhou and Beitang. Among them, Haitai General Charge-and-Swap Station is the first comprehensive charge-and-replace power station in Tianjin. In the first phase, four commercial vehicles will be installed for electrician's replacement, which will provide replacement services for 120 pure electric vehicles.
The National Grid’s “Opinions on Doing a Good Job in Distributed Power Grid Connection Services†clearly provides facilities for distributed power projects to access the grid and opens up green channels for access system engineering construction. This move is of great significance to the promotion of distributed power in China.
Tianjin Electric Power Company opened a special window for individual customers to provide green channels for service. Mr. Tung, the first individual power generation user in Tianjin, installed photovoltaic and wind power installations on the roof of his three-story townhouse, including a group of 3-kilowatt photovoltaic power generation equipment and a group of 3-kilowatt wind power generation equipment, generating about 15 degrees of electricity per day. (Some of the self-use part of the sale), invested in tens of thousands of yuan. By the time of the 100th day of on-grid connection on September 14th, the electricity generation was 1060 kWh.
For large customers to provide comprehensive human and material support. At present, Tianjin has built the country's largest civil building photovoltaic power generation project, with 92 residential buildings in 4 residential areas, and a photovoltaic array of more than 8,600 solar panels. The annual power generation capacity is 1.59 million kWh. After the electricity is integrated into the power grid, the annual revenue is approximately 700,000 to 800,000 yuan, and the power generation income is used to subsidize the cost of residential property.
In Tianjin, China has also built the largest amorphous roof grid-connected photovoltaic power station in China. It uses 28 canopies at Tianjin West Railway Station to lay solar panels. The designed capacity is 1,884 kilowatts. It is estimated that the annual power generation will be 2 million kwh. More tons, reducing carbon dioxide emissions by about 2,000 tons, saving large areas of land, promoted the impression of a green city.
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