Whether it is the evolution direction of industrial structure, the growth rate of economic aggregate or the energy consumption structure dominated by coal, the development of Suzhou is very similar to the overall situation of the country.
Nowadays, with the continuous development of Suzhou's industrial economy, more than 80% of industrial energy consumption has brought a test to this city, which was originally not rich in energy.
On the one hand, there is an economy that still needs steady progress, and on the other hand, there is an increasingly tense energy source. How to break through the shackles has become a difficult problem for many "resource-based small cities".
Suzhou is to solve this problem.
In recent years, Suzhou has comprehensively promoted energy reform in urban development and created a new urban development sample.
Recently, a new energy reform in Suzhou has attracted many people's attention. It is understood that Suzhou is planning to build three energy storage power stations with a total capacity of 242 MWh.
This is not only the first municipal energy storage group in China, but also the largest planned energy storage group in China.
According to industry experts, this energy storage action in Suzhou provides a new idea for other cities to solve energy problems, and it is expected to affect the energy supply mode of 100 cities in the next two to three years. ?
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Megacity "charging treasure"?
In 1990s, the influx of industrial enterprises made Suzhou's economy develop rapidly. At the same time, the development of industry has greatly increased the demand for energy.
Suzhou, like most cities in China, lacks abundant fossil energy such as coal and oil and gas, and also lacks the conditions for building large-scale clean energy such as wind energy and photovoltaic energy.
According to statistics, in 20 18, Suzhou's industrial energy consumption (including processing and conversion input) exceeded 85 million tons of standard coal, and the city's electricity consumption exceeded156.2 billion kWh.
Compared with the rising consumer demand, Suzhou's local energy production capacity is obviously insufficient.
By the end of 20 17, Suzhou had a local installed capacity of 22.92 million kilowatts, of which coal and electricity accounted for 73%.
In addition, judging from the existing planning in Suzhou, there is no room for new thermal power plants, and the scenery conditions are average, so clean energy substitution is not a feasible way. ?
To solve the problem of energy supply in Suzhou, we have to rely on calls from outside the region, and energy storage power stations have become a necessary choice for storing electric energy and peaking and frequency regulation.
The three energy storage power stations planned in Suzhou this time constitute the largest energy storage urban agglomeration in China, which is of great significance to promoting urban energy reform.
The total charging and discharging power of the three power stations is 138.6 MW, with a total capacity of 242 MWh, which is expected to be completed by the end of 20 19.
The planning of three energy storage power stations is closely related to the development of urban industry.
Among them, the scale of Kunshan energy storage power station is 193.6 MWh, which is used to meet the development needs of local IT industry with 100 billion clusters.
The energy storage stations in Yang Ren and Yule are 13.2 MWh and 35.2 MWh, respectively, which can relieve the power load pressure of Changshu and Zhangjiagang automobile and parts, equipment manufacturing and textile and garment industries.
At the same time, the three energy storage power stations are interconnected and cooperated with each other through the 220 kV power grid to realize millisecond-level accurate control and communication in the largest urban energy storage group in China.
In addition, in Zhuangtian, Suzhou, a 200 MWh energy storage power station is also under construction, and Suzhou Urban Energy Storage Group is further expanding.
In the process of developing energy storage, Suzhou has taken a unique path by fully considering its own resources. Kunshan, Yule and Yang Ren energy storage power stations are the former sites of retired substations.
Using the former site of substation to build energy storage power station can effectively save land cost, especially in urban construction where land is scarce. Land reuse of decommissioned power stations is a new idea in the process of energy reform and urban development.
In fact, Suzhou's exploration has turned on the switch of power grid-side energy storage power station construction.
As the epitome of China's urban development, Suzhou's energy storage wave will set off a new wave of energy industry in China. In the next few years, a number of super-large "city charging treasures" will appear in various regions of the country. ?
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Which cities will benefit from the explosion of energy storage on the grid side? ?
Urban energy storage group is an important foundation of Suzhou's urban energy reform. Each energy storage power station is connected with power grid, Internet of Things and data network. With the participation of more and more energy storage power stations, an energy Internet ecosystem is finally formed.
In addition to Suzhou, Beijing, which is also facing the contradiction between energy and production, is also carrying out energy storage on the grid side recently.
Last week, Huairou North Energy Storage Power Station, the first demonstration project of power grid-side energy storage power station in Beijing, was officially put into production. The final scale of the power station is 30,000 kWh, and the maximum output power reaches 1.5 kW. It can supply power to 10000 households for 2 hours at the same time after being fully charged.
Similar to the site selection of Suzhou Energy Storage Power Station, Huairou North Energy Storage Power Station is located in Huairou Science City, and there are many scientific devices around it that require high reliability of power supply. Once the power grid fails, the energy storage power station can "replace" at millisecond speed to meet the power demand.
In addition, Changsha, Hunan, Hangzhou, Zhejiang, Ningbo, Jiangsu, Nanjing and other places began to plan and build energy storage power station projects.
It can be seen that most of these cities are located in the south, with developed economic level and large industrial volume. At the same time, urban development is facing the problem of high energy consumption, and its own energy supply is far from meeting the needs of production.
Therefore, it is necessary to build energy storage power stations to alleviate the pressure on the power grid, thus promoting the energy reform of the city.
From the perspective of industry, the development prospect of energy storage in China is very broad.
According to the latest survey report of Wood Mackenzie, a British data analysis consultancy, China will surpass South Korea to become the largest energy storage market in the Asia-Pacific region in the next five years, and it is expected to become the dominant position in the energy storage industry in the Asia-Pacific region.
With the growth of domestic energy storage market, an energy storage competition between cities will also begin. Many cities, such as Suzhou and Beijing, have taken the lead and run in the front line of energy reform. ?
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Sample of Energy Transformation: Suzhou Industrial Park
In addition to the action on energy storage, Suzhou's energy reform in other fields is also of great reference significance, the most representative of which is Suzhou Industrial Park.
Anyone who cares about the development of Suzhou will leave a deep impression on Suzhou Industrial Park.
From 65438 to 0992, Sino-Singapore cooperation in building Suzhou Industrial Park became the key point of Suzhou's later economic outbreak. In 20 17, Suzhou industrial park achieved a regional GDP of 235 billion yuan, accounting for 13.8% of Suzhou's regional GDP.
However, in the past five years, the GDP growth of industrial parks has maintained an upward trend, but the growth rate is unstable. One of the important factors is local energy.
After 25 years of development, Suzhou Industrial Park is close to saturation in power grid construction and public resources.
The data shows that the power grid load density of Suzhou Industrial Park exceeds 0.9 million kilowatts per square kilometer, which has reached 10 times the average level of Jiangsu Province.
In order to solve this problem, Suzhou Industrial Park has adopted two means of "separation" and "combination" to optimize energy resources.
The "sub" refers to the construction of distributed energy. Suzhou Industrial Park has adopted a multi-energy complementary model according to local conditions, giving full play to the strengths of their respective enterprises and solving some energy consumption problems from the supply side.
Compared with residential areas, the energy consumption demand of users in industrial parks is quite different. Based on this, enterprises in the industrial park have arranged distributed energy construction according to local conditions, such as ground source heat pump of Zhongheng Building, biogas utilization of kitchen waste, and food energy storage in Sizhou.
Of course, this "fragmentation" will also increase the complexity of energy supply.
In order to solve this problem, Suzhou Industrial Park has applied the energy system of "four networks and one cloud".
Simply put, it is based on the "cloud platform" to monitor data and realize management. At the same time, it is surrounded by power grid, heating network, cooling network and natural gas network, with natural gas distributed energy as the hub to realize the conversion between energy sources.
In the centralized energy-using area, Suzhou Industrial Park has carried out distributed cogeneration of natural gas, which has realized the cascade utilization of energy and the comprehensive energy efficiency is about 70%.
Between separation and integration, Suzhou Industrial Park has gradually found a solution to the energy problem and become the forerunner of energy reform in Suzhou and even the whole Yangtze River Delta region.
A change in the industrial market has quietly arrived.
The energy optimization of Suzhou Industrial Park has become a microcosm of Suzhou. Suzhou's energy transformation is a sample of many industrial cities in China in the future.