What to do if the power goes out? Electric cars are your big charging treasure

The head picture comes from: Weibo @I am a scientist iScientist. In addition to food safety and health, people in cities are most afraid of power outages. Once there is a power outage, the air conditioner and heater cannot be used, the computer cannot be used, and the scary thing is that Wi-Fi is gone. At this time, if your cell phone has not had time to charge, it is even more anxious. Huang Yuping, a researcher at the Guangzhou Institute of Energy Research, Chinese Academy of Sciences, shares the topic “What Can Energy Optimization Do? We want every electric car to be a walking storage power station. ” This switched public micro-channel number: I am a scientist iScientist (ID: IamaScientist) author: Huang Yuping.

Huang Yuping’s speech video:

</ iframe> The following is the actual record of Huang Yuping’s speech: Hello everyone, this is Huang Yuping, from the Guangzhou Institute of Energy Research, Chinese Academy of Sciences. My research work has two main parts: Optimization of energy systems and grid-connected operation of electric vehicles. You may find that there are fewer and fewer blackouts now, which is actually the result of the optimization of the energy system. However, a few days ago, my home was out of power. The whole neighborhood was completely dark and the elevator was stopped. I got off work that day and went home to climb the tenth floor. When I got home, my husband said that he had to work overtime at night, so he gave the child to me. I turned over the box at home and found out the chargers that I haven’t used for many years. I hope that I have some spare power, but it has been left for too long, and there is usually no charge and discharge. <img class = "lazyImg" _src = "https://img.huxiucdn.com/article/content/202004/01/093705782750.jpg?imageView2/2/w/ 1000 / format / jpg / interlace / 1 / q / 85 "data-w =" 1080 "data-h =" 608 "> Ten minutes later, someone knocked on the door. It turned out that my husband came back with a bag of candles in his hand. He ran all over the community and finally bought a few. I was so touched at the time that I didn’t know what to say, because I felt already panting when I climbed the tenth floor. I didn’t expect him to buy a candle to come back. That night my mother and I and my baby lit candles and waited for the electricity to come. Every night after a power outage, everyone was happy because they could skip homework. Everyone held candles, and some naughty classmates told ghost stories. At this time, you usually hear a bangThe rumbling sound is actually a backup generator at work. It didn’t take long for electricity to come. In fact, a power outage is a partial failure of the urban power grid and distribution network. When the backup generator set starts to work, the power outage becomes an independent microgrid. (Micro-Grid) , also known as “Micro “Grid” refers to a small power generation and distribution system consisting of distributed power sources, energy storage devices, energy conversion devices, loads, monitoring and protection devices. In short, microgrid is mainly composed of three parts- <img class = "lazyImg" _src = "https://img.huxiucdn.com/article/content/202004/01/093705887435.jpg?imageView2/2/w/ 1000 / format / jpg / interlace / 1 / q / 85 "data-w =" 1080 "data-h =" 608 "> Distributed power: Most of the power in microgrids is distributed power with small capacity, including micro gas turbines, solar cells, photovoltaic cells, small wind turbines, etc. Energy storage device: including storage batteries, thermal energy storage, etc., the surplus electricity is stored by electricity or other energy forms, and used when needed. Energy storage devices are very important. They can maintain the supply and demand balance of the entire microgrid, and also maintain voltage and frequency stability. Load: In fact, it is the power capacity of the microgrid. If the mobile phone is equipped with a microgrid, the load is small, but if the microgrid is built for a residential area, the load is very large, and the capacity of the energy storage device to be matched is also very large. Why do you rarely experience large-scale power outages now? Because we have already upgraded the power system, including power generation, transmission and transformation, power distribution and user systems. <img class = "lazyImg" _src = "https://img.huxiucdn.com/article/content / 202004/01 / 093705171739.jpg? imageView2 / 2 / w / 1000 / format / jpg / interlace / 1 / q / 85 "data-w =" 1080 "data-h =" 608 "> The main function of the power system is to convert primary energy in the natural world into electrical energy through power generation power devices, and then supply power to various load centers through power transmission and transformation equipment and distribution systems, and finally convert electrical energy into power through various equipment. Different forms of energy, such as light and heat, serve people. The upgrading and transformation of the power system actually requires sufficient power generation and transmission equipment and sufficient available power resources to meet the growing demand for electricity in the whole society. <img class = "lazyImg" _src = "https://img.huxiucdn.com/article/content/202004/01/093705356703.jpg?imageView2/2/w/ 1000 / format / jpg / interlace / 1 / q / 85 "data-w =" 1080 "data-h =" 596 "> How does the electricity load of residential communities change? At 7 or 8 in the morning, everybody gets up, rinses, and eats breakfast. At this time, a small peak will appear. At four o’clock in the afternoon, power consumption suddenly increased because everyone started to work, go home from school, cook for dinner, turn on the electric water heater to prepare for bathing, also known as “peak power”. In the middle of the night, people use the lowest amount of electricity, also known as the “power trough”. The difference between the daily maximum load and minimum load of the power system is the “peak-to-valley difference”. In fact, the difference between peaks and valleys is not as large as possible, because during peak hours of electricity consumption, additional power generation resources are required, and more fuel is burned to supply electricity. So the optimization of the power energy system is to reduce the peak-to-valley difference, cut the peaks and fill the valleys, and at the same time ensure the safe operation of the power system, so that this part of the energy is used economically and reasonably. How can I optimize the energy system? <img class = "lazyImg" _src = "https://img.huxiucdn.com/article/content/202004/01/093705989003.jpg? imageView2 / 2 / w / 1000 / format / jpg / interlace / 1 / q / 85" data-w = "1080" data-h = "608"> In 2017, I came back from the United States to take over a project to make a smart energy management system for an industrial park that mainly produces proprietary Chinese medicines and traditional Chinese medicine tablets, which has a variety of energy needs. We cook traditional Chinese medicine at home. Generally, we put the medicinal materials in the medicine pot, add water, and then open the stove to burn. The medicine factory is a little different. They first put the medicinal materials in the extraction tank, then added steam and hot water, first covered the pot lid and sizzled for half an hour, then turned to a low fire and boiled for an hour and a half, and then experienced some extraction, Production process of concentration, drying, granulation and packaging. In the whole process, the power consumption of each process and operation is different, and not every operation requires steam. <img class = "lazyImg" _src = "https://img.huxiucdn.com/article/content/202004/01/093705975218.jpg?imageView2/2/w/ 1000 / format / jpg / interlace / 1 / q / 85 "data-w =" 1080 "data-h =" 608 "> There are many companies in the industrial park, and another company produces different brands of Chinese medicine infusions. Their requirement is that the production line runs non-stop for eight hours, using steam for the first four hours and electricity for the next four hours. There are also other manufacturers. Adding all of their energy loads, the problem becomes very complicated: How much steam does the boiler produce per hour to meet everyone’s heat demand? How much electricity does the power plant need to generate to meet the normal operation of the entire park? Here is the optimization of the energy system. First, we will install sensors for the main energy-consuming equipment for real-time monitoring; then, upload the collected data to the system for analysis, dig out the characteristics of energy load, and mathematically model the system operation and operation logic relationship in the computer. Establish a simulation model to simulate the actual production status of the entire park, including production capacity, heat production process, user power consumption characteristics, and so on. We can add or remove equipment at will in the simulation system, control the boiler switch,In order to find the best match and the best operating conditions. With this optimized scheduling method, you can improve the efficiency of the energy system, enhance peak-shaving capabilities, and maximize the optimal allocation of resources. Everyone may think, can we store the electricity and use it again when needed? The power bank in our hand can store a certain amount of power, but it is only enough to supply some simple power to the energy storage appliances, and it cannot feed the power back to the power grid to meet the peak regulation requirements. <img class = "lazyImg" _src = "https://img.huxiucdn.com/article/content/202004/01/093705485763.jpg?imageView2/2/w/ 1000 / format / jpg / interlace / 1 / q / 85 "data-w =" 1080 "data-h =" 608 "> Now let’s do a small survey: everyone in the audience, please raise your hand if you have bought a car? Raise your hand for a pure electric vehicle? In the field of transportation, the electrification of vehicles has gradually become a trend. In 2017, China accounted for more than half of global electric vehicle sales, and more than twice the world’s second-largest electric vehicle market. From the perspective of energy and environment, electric vehicles can use diversified power sources to replace traditional fossil fuel energy sources. Not only is the energy conversion efficiency relatively high, but it is also environmentally friendly. It can reduce greenhouse gases, improve air quality, and reduce noise. Pollution. What else does an electric car do? Electric vehicles are the largest energy storage devices in the family, and they can also interact with the power grid— It can provide power assistance services to the power grid, and also serve as a buffer for renewable energy grid connection. How did this happen? <img class = "lazyImg" _src = "https://img.huxiucdn.com/article/content / 202004/01 / 093705772913.jpg? imageView2 / 2 / w / 1000 / format / jpg / interlace / 1 / q / 85 "data-w =" 1080 "data-h =" 608 "> The main core component of an electric vehicle is the battery, which can be discharged at the peak of electricity consumption and charged at the trough of electricity. Car owners can earn a certain amount of money by charging at low prices and selling electricity at high prices. This is also a part of our research group’s current research, which can help you make a difference in the future. <img class = "lazyImg" _src = "https://img.huxiucdn.com/article/content/202004/01/093705063333.jpg?imageView2/2/w/ 1000 / format / jpg / interlace / 1 / q / 85 "data-w =" 1080 "data-h =" 608 "> Electric cars can bring more intelligence to cities and make cities cleaner. We can use solar charging piles in areas with strong solar radiation, use wind turbines in places with developed wind resources, and use energy storage batteries to directly power electric vehicles. Do you remember what I said before? Electric vehicles can be integrated into the power grid. During the low power consumption period, (electricity price is 0.3 ~ 0.4 yuan) . (Electricity price 1.3 ~ 1.4 yuan) Sell electricity, so you can earn 1 yuan for 1 kWh, not to mention that electric cars are not only charged and discharged in a day. once. Maybe many people already have a small abacus in their hearts and want to make a difference. But we also have to think about things, such as the battery capacity of the electric car, the current state of charge of the car, the energy density of the battery, and the convenience of the charging and discharging pile … It is still relatively theoretical and cutting-edge. There is no charge-discharge pile on it yet. However, I believe that in the near future, in two or three years, everyone can see demonstration projects in Shanghai. Everyone may say, I just buy a few electric cars, and just prepare to store electricity? However, I may think that the problem will be more comprehensive and detailed due to personal engineering thinking.To some. <img class = "lazyImg" _src = "https://img.huxiucdn.com/article/content/202004/01/093705680825.jpg?imageView2/2/w/ 1000 / format / jpg / interlace / 1 / q / 85 "data-w =" 1080 "data-h =" 608 "> I was also asked before, why should a girl study science and engineering? My answer was “I like”. But as I grew older, I found that it had a lot to do with the native family. My dad used to be a carpentry expert. When I was a kid, I liked to go through boxes and find things, and played with all his tools. I like my parents to buy me doll toys, but I also like the metal insert toys that I bought-I can toss all afternoon, and then show them my achievements very proudly. In addition, the atmosphere around the home is also important. I grew up on the campus of Guangdong University of Technology. I used to walk around in the laboratory and lie on the window to see my brothers and sisters doing experiments. When I was exposed to chemistry in high school, I became interested in science and engineering. My college tutor is my neighbor upstairs, which gave me a lot of encouragement and allowed me to go further on the research road after graduation. I am fortunate that I have been doing what I like, and I hope that in the future, I can continuously optimize the energy system, seamlessly connect electric vehicles with new energy, and serve the society from all angles. I also hope that I can do this together with my colleagues in the future and indirectly protect our environment. Thank you all. <img class = "lazyImg" _src = "https://img.huxiucdn.com/article/content/202004/01/093705035035081.jpg?imageView2/2/w/ 1000 / format / jpg / interlace / 1 / q / 85 "data-w =" 1080 "data-h =" 721 "> Speaker Huang Yuping: “What Can Energy Optimization Do? We want to make every electric car a walking storage power station. This article is transferred from WeChat public account: <a href =" https://mp.weixin.qq.com/s?__biz=MzI0MzA3OTI1MA==&mid=2651613752&idx=1&sn=882eb7afdf35065d499683cca3c060b7&chksm= f28a4b05c5fdc213acf1e7d27cd5cc16b5592d7a6afe7a12b40c5d97abbaf42f816131e56164 & mpshare = 1 & scene = 1 & srcid = & sharer_sharetime = 1585703488991 & sharer_shareid = 71ac9ff405764acd9ea540f47cebb9bf & key = 1b1c011b6d58afbc10d94e428b1a3cbe84fe04853f8bc15cf624cc130002aa8dc480640a331b765c3b493f250bdb8da677faa600a5f321872c9563811db60675a4cf4291fc8484923f5958795905fd87 & ascene = 1 & uin = ODI1NTgwNTEz & devicetype = Windows + 10 & version = 62080079 & lang = zh_CN & exportkey = A% 2BcG15mGGXIYAScFTUts7Bc% 3D & pass_ticket = 4Xsi% 2B% 2F5SHKMLBTgEmBi2Z0HW3Bor% 2BKRY% 2FNdbUof2IHUMj66vCllj6uBc2Z% 2B% 2BJRAW "target =" _ blank "rel =" nofollow "style =" text-decoration: none; "> I am a scientist iScientist (ID: IamaScientist) </a> , author: Huang Yuping </div> </article> <script src='//unpkg.com/valine/dist/Valine.min.js'></script> <div id="vcomments"></div> <script> new Valine({ el: '#vcomments', appId: 'nFXLD31mFjDHlrEDx3OQWstS-gzGzoHsz', appKey: 'GhTuxYTHv3w2aqSJ0urXJov5', }) </script> <style> #veditor { background-image: url(https://image.bestzuo.cn/images/20200708160947.gif!getwebp); 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