Discussion on application mode and economy of user-side battery energy storage

The international energy storage summit and exhibition 2018 (ESIE2018) was held at the national convention center in Beijing from April 2 to 4. Tao yibin, state key laboratory of new energy and energy storage and operation control, new energy research center, Chinese academy of electric power sciences, delivered a speech on the topic BBS. Details of the speech are as follows:

State key laboratory of new energy and energy storage operation control, new energy research center, Chinese academy of electric power sciences

Next, I will share the theme of user-side energy storage application mode and economy.

Because many of them are located in jiangsu province, many of them made a wonderful report on the client side of jiangsu province. Later, we saw that many of them brought us something of a niche, such as the multi-scene application of mobile battery energy storage system in the distribution network, to share, or to do an engineering exploration.

My report is mainly divided into application background, technical status, technical analysis, application cases and promotion and application.

Let's first look at the mobile energy storage report two content, from the national standard one integrated, one separated. What is the integrated, can be supplied to the bureau 95988, the locomotive and cabotage is integrated. There are also mobile storage containers on the client side that can be pulled and run. Simply put, the concept of mobile energy storage is well defined.

As you can see from the previous report, the demand for electricity in our modern society is growing stronger and stronger. With the vigorous development of electric vehicles, we will put forward requirements for the power grid, its capacity and quality. Now the state emergency power supply headquarters will provide emergency support means when special disasters occur, especially in fujian and guangdong. These things are in great demand for us. First, it is important to meet the requirement of maintaining electricity. For example, in the college entrance examination, we all basically participate in this process. Second, behind the silent contribution, thousands of power should be the power protection device, each examinee to provide power quality safety and reliability. Like the youth Olympic Games or davos BBS, can do a lot of support, we can do the G20 summit electricity supply power supply.

Second, familiar from our load control center you can see, this is a question of actual survey last year, anhui, fujian, load, in April each year around the load suddenly increases, the data can be seen from the regulation of low load operation, high load operation in April, we supply transformer power supply capacity is insufficient, in the mountains, island has carried out a lot of activities, including business district of the city electricity load, can be seen from the curve, due to the electric car after a lot of electricity, electricity load at peace when holidays is not the same. In terms of our demand, transformers are sometimes underloaded and sometimes overloaded.

We have service areas for electric cars in many of our service areas, and we see a lot of these things on the side of highways, on the side of our lives. We use electricity in our cars. It is absolutely impossible to drive a car without electricity. You need something to store the electricity.

Based on the above we are very mature generators, in this venue today there are industrial generators behind these safeguards. We are in a typical henan and fujian province as an example, each province has one hundred units, like jiangsu, shandong more, they need to emergency more at ordinary times, in this case, everyone in our traditional means, because we are now on the life, the quality of the electricity, especially as Beijing meeting more places, I know Beijing power supply bureau for Taiwan to energy storage, and combined generator combined together, and jointly run industrial generators, provides the high quality of the device. You can see, the problem of electricity replace now, traditional energy storage generator you can feel that, if in some everyone feel fair, if you are in use, using traditional generators to pollution and noise is very headache, hope to have a clean energy can replace, provides the high quality safety of electricity.

Second, when the National Day ceremony was held in the 60th year of Shanghai world expo, the flywheel energy storage device was adopted. It can be seen that the commissioning work was relatively large, the later operation cost was relatively high, and some problems were encountered in the process of operation. Based on these problems and requirements, we thank you very much among peers to energy storage to progress, not only operation control technology, including the cost of running, under this scenario can see mobile energy storage technology, and environment friendly, no environment and noise pollution, flexible, high quality, high reliability of power supply, can also add capacity, as many car can transfer, and improve economic benefit.

Our state grid mobile energy storage system topology, in normal times to the grid peak load, provide power system. The entire grid is greatly improved, and at the same time, its economic benefits are improved.

This is the modular design idea, this is the integration of the car, the yellow car, according to our site power size and capacity size, especially like some villages in the city or rural mountainous areas can not drive, sometimes in the city and the need for large power supply capacity, and there is a large power supply to use. We adopt design thinking to use, can go freely and flexibly boundary. Including power supply capacity including charging and discharging of the rapid switch, to provide power supply capacity. After some power failure, you can switch to the backup power supply in zero milliseconds. This is the specific analysis, the traditional generator, including the mobile energy storage system performance parameters, including the comparison of various indicators.

Because we can find through the actual investigation, if we generally have the power supply capacity, it is generally 2-4 hours, the peak time, at noon, the peak time is from 11 o 'clock to 1 o 'clock in the afternoon, and the peak time is from 9 o 'clock to 11 o 'clock in the evening. Just push this through.

We can make a comparative analysis of the economy. The cost of energy storage battery has dropped sharply, and the benefit cost is taking an increasingly obvious advantage. The demand is on an upward curve and the cost is on a downward curve.

This is an integrated development technology, why do seamless switch, which is the demand of the scene we put forward, which is also to take high new technology. As you can see, on March 5 last year, this is a relatively meaningful place to participate in meaningful work at the political work conference of the whole army held in gutian mountain resort, fujian province. The second meeting was the national youth games held in longyan sports park. Third, this is the gutian villa a wiring diagram, in order to improve its economic efficiency, can be used in two lines to protect electricity, this year will not happen a few times, there will be no such thing. And you can see that this is a diagram that simulates a sudden power failure, where you can switch in with a load side voltage of zero milliseconds. Do repeated experiments a few days in advance before arriving at the site, so as to ensure the smooth progress of the conference in the future. This is the current energy storage in the past, and some demonstration applications will be carried out in future scenarios in anxi, fujian province, caoxi, Shanghai, zhenjiang, wuxi and xuzhou prefecture-level cities.

Through everything we can to support from the south net, approved by the national standard, is exactly a year ago we open the can, within a year of time to complete the compilation of national standard, for approval, hopefully get gb releases this year, can put the container type, one-piece energy storage for specification, so the industry standard. The third one, including the mobile energy storage and power supply system and its control methods, has been submitted to the national standard, technical regulations and monitoring. Including the engineering regulations, the future development of mobile container energy storage access distribution network engineering access, do a further work. From the essence of the research and development and product monitoring engineering, a line, including the future of the cloud platform and regulatory center of the method further comb, patents do not say much, scientific research. We have entered the old company's new technology promotion directory, a large area of promotion, in various provinces and cities to accumulate.

Promote the integration of marketing distribution in the future, the distribution, marketing, scheduling together, can be combined and reused.

If the replacement rate is within four hours, 70 units per province, and the replacement rate is 20%, it is estimated to be about 2 billion. This is a flywheel product that currently saves $300 million. This is a little something for everyone to share, thank you very much.

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