In recent years, the new energy automotive industry development spurt, driven by the rapid growth in demand for storage power station. "Industry statistics show that in 2015, China's charging and discharging storage integrated charging station investment size of 1.15 billion yuan, is expected to reach 10.37 billion yuan by 2020." China Chemical and Physical Power Industry Association Branch Secretary-General Liu Yong energy storage applications In his speech, pointed out that with the development of energy storage industry is getting better, the industry's focus on light storage and integration projects rising concern, the huge market opportunities behind it is expected to spawn the next investment in the air, pry open energy storage industry New room for growth.
At this meeting, this reporter on the current development of China's light-filling project related issues, interviewed at the end of September this year, delivered another commercial side of the demand side of the megawatt-class power plant project, Shenzhen Ke Lu Electronics Technology Co., Ltd. Company (referred to as "Ke Lu Electronics") product operations manager Zhou Han.
Helping to achieve grid stability
In the future, the charging pile equipment will increase on a large scale, "but in the distribution network peak, the large-scale charging pile into the impact load, the stability of the power grid will have a very big impact." Zhou said, Dispatch platform construction lag, lack of demand response capacity, the peak charge will increase the peak-valley difference, resulting in increased operating costs of electricity. At the same time, this will also increase the substation construction, line construction and other power grids to upgrade difficult, resulting in a total of more than AC power bus power plant loss, causing overloading with variable weight, resulting in insufficient capacity of the entire power distribution network.
He also said that if the electricity market in the future to achieve open, short-term peak-valley electricity price difference will increase, the peak customer electricity costs will also increase.
"Distribution network system stability is reduced, the overall capacity is very serious problem, how to solve?" Zhou Han believes that this requires the energy management platform, charging equipment and energy storage system combined to achieve storage and storage combined application.
"With the further reduction in energy storage costs, its economy will become increasingly evident." Zhou Han said, energy storage can be flexible to absorb new energy, so that it does not produce grid impact, stable distribution network and off-grid operation, Flexible distribution of charging power, time and space peak power consumption, while no harmonic pollution, safety and health.
Therefore, "based on the many advantages of energy storage, through a large number of energy storage equipment, charging pile equipment access to energy management platform, it can take the initiative to do energy storage V2G, including the realization of charge pile charging control, thus passive response grid Demand, to achieve the stability of the entire power grid. "Zhou Han said.
With significant economic and social benefits
At present, the industry has a lot of light storage combined application of demonstration projects, and the formation of a certain arbitrage model.
"For example, Kelu Electronics has built a number of light storage projects, and the formation of a valley when the power from the grid, the peak discharge of photovoltaic, energy storage and the arbitrage between the grid model." Zhou Han said that when a large number of Energy storage devices and network control at the same time, it can be a large-scale peaking, FM, resulting in a good premium.
Zhou Han to Kelu electronic megawatt-class demand side of the energy storage applications Project Description: "In this project, including energy storage equipment costs, operating costs, including all the costs of about 9 million yuan, the project overall income of nearly 13 million Yuan, the annual net profit margin of 3 to 5 percentage points or so. "He said enterprises can also apply to the grid demand response, the current estimates, this part of the cost of about 1.5 million yuan a year.
Zhou Han introduced, at present, many large factories are adjusting the user load discharge, electricity behavior. "They are adjusted to the valley in the distribution network when the production and discharge." Zhou Han analysis, so, if the valley in the distribution network when charging, it will increase the virtual load of customer load, resulting in customer capacity transformer, thereby increasing electricity cost. If the peak load in the customer when the discharge strategy to be able to reduce the pressure of the customer transformer, thereby reducing the transformer cost of virtual volume. "In general, customers can reduce the cost of about 10% a year," he said.
Zhou Han further introduced, from the economic point of view, 100 megawatts of energy storage projects can replace the traditional side of the peak power plant power generation, compared to traditional power plants in peak shaving, FM and other ancillary services investment, 100 megawatts of energy storage projects can save about 3 Billion of investment, and nearly 450 million yuan of transmission and distribution investment. At the same time, demand for virtual power plant operating costs low response, the government can reduce the 1 ~ 250 million yuan of electricity peak load hot standby costs.
"In terms of social benefits, the optical storage and storage combined project will help to build, improve and perfect the flexible summer peak response system to ease the tension in power supply situation, enhance the reliability of power supply, while increasing the demand side to participate in the initiative, Enhance the stability of the electricity market and operating efficiency. "Zhou Han said.
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