There is electricity is capricious! See how electric cars "rely feed" the national grid
In fact, these MINI-E are exactly the products that BMW specially designed for the experimental projects of the University of Delaware's Institute of Technology. We all know that electric vehicles recharge and consume the energy of the national grid. But is it feasible at the technical level if it does the opposite and sells surplus electric vehicles back to the national grid? Although this idea is more like a nonsense, it is precisely the orientation of the University of Delaware. After obtaining financial support from a consortium of private companies, it is called "vehicle-to-" The technology of grid (abbreviated as V2G) was able to bear fruit. According to the person in charge of the project, this V2G technology mainly hopes to help the local power system to effectively manage supply and demand by continuously tapping the enormous energy storage potential of electric vehicle batteries.
After years of development and mature incubation, this technology has been able to deliver stable currents to PJM Interconnection, the largest grid operator in the United States. Professor Willett Kempton, a researcher from the Department of Marine Sciences at the University of Delaware who was also one of the founders of V2G technology, said in an interview that “This technology has successfully turned 15 MINI-E into part of the PJM grid. It is not only conducive to the stable operation of the entire power system, but also can be used to earn some 'zero money' for the laboratory."
In the past two years, researchers from Delaware University and PJM’s subsidiary, NRG Energy, have developed systems that can connect electric vehicles and the national grid, enabling two-way energy exchange. The system allows up to 15 electric vehicles and their corresponding charging piles to exchange data with the PJM power system and, if necessary, provide the grid with the required power. We all know that the current frequency of the National Grid of the United States is higher than that of mainland China, which is 60 Hz. However, if the sudden reversal of wind power generation or solar power generation systems, or the surge in demand for electricity, may cause the current frequency to be disturbed, which in turn causes the entire power system to paralyze. This service, known in the industry as "frequency regulation", is based on a second-to-second delivery mechanism that can be used to balance the load of the entire grid system.
Naturally, you guys must have guessed exactly what kind of role the 15 electric cars played. But why choose BMW instead of the hot train type Nissan Leaf as the "white mouse", electric state believes that the reason is that the MINI-E is the prototype of the BMW i3. It is equipped with a lithium battery with relatively stable performance and large capacity. Charging and discharging "蹂èº". It is reported that electric vehicles store electric energy in lithium batteries during the trough of low electricity demand, and the cost is low; and when the demand for electricity in the area reaches the peak, the excess electricity in the lithium battery is returned to the grid system. The strategy of “buying at a low price and selling at a high price†will earn a profit for the electric vehicle users.
Michael Kormos, senior vice president of PJM Power Systems, said, “This is also a win-win move for power companies.†On the one hand, electric car users have further reduced the cost of vehicles. Secondly, compared to increasing production and building more thermal power stations, this practice of recovering excess electric energy from electric vehicles is not only affordable, but also facilitates rapid expansion and application.
Benmen make axe? Doing is the business of the national grid!
Since the advent of electric vehicles, people have not been satisfied with its role as a purely transportation vehicle. For the secondary development of the electric vehicle, which is a large-capacity mobile charging device, many major OEMs around the world have made various attempts. Using the Nissan Leaf and Chevrolet Volenda as examples, Nissan introduced a similar device on the Japanese market by using a two-way charger to transfer excess battery power to the power grid system, allowing consumers to use electric vehicles in the event of a power outage. Electrical energy supports the normal power needs of the family. It is reported that Mitsubishi Motors of Japan announced that its Outlander plug-in hybrid vehicle will be equipped with a V2H (vehicle-to-house) electric vehicle home power supply system, and its battery storage capacity can support household power supply needs.
These 15 four-seat MINI-Es are provided by BMW. In the future, with the continuous maturity of technology and the large increase in demand, there will be more other brands of electric vehicles to join the army of “selling electricityâ€. Prof. Kempton said that he has devoted himself to the development of the "V2G" system for more than ten years. Half of the electric Minis currently located in the Institute of Technology of the University of Delaware are in a fixed position. The other half just plugs in the charger. Start providing services immediately and work at least 20 hours a day. All test vehicles are mainly controlled by the local PJM power grid system. The signal is transmitted every four seconds and the battery is controlled to charge or discharge or stand by.
The EV Grid from Palo Alto, California, developed hardware and chargers for the electric version of the Mini that participated in the experiment. Thomas B.Gage, head of the company, said in an interview with reporters that electric vehicles are usually equipped with common one-way chargers and can withstand a maximum power of 3 kilowatts. However, these electric Mini chargers can not only achieve current. Two-way circulation, while the maximum output power up to 18 kilowatts.
However, unfortunately, ordinary electric car users currently cannot purchase such two-way chargers, and Prof. Kempton also said that at present, five electric car manufacturers that can use bi-directional charging systems have been developed at the same five host plants, with the exception of BMW. The list of car companies is still confidential, but Electric State speculates that there must be Nissan, because Nissan spokesperson Brian Brockman expressed that he is optimistic about the development prospects of the technology and hopes to further supply electric vehicle electric energy to the national grid in the future. Professor Kempton also pointed out that one manufacturer is developing a bidirectional charging system with a charging power that is three times the current. According to the current profit of US$5 a day, after a three-fold increase, the same-day profit can even reach US$15. At $5,400, the cost of installing the system was $400, making it easy to earn a net of $5,000.
V2G technology business, still need to step through what threshold?
Having talked about so much, you have a deeper understanding of the secondary development of electric vehicles than you did. Although at present, the new energy vehicles on the market are more expensive than the same level of fuel vehicles. At the same time, because the basic charging facilities are still very scarce, it is natural for ordinary consumers to feel uncomfortable embracing electric vehicles. But then again, as the technology continues to mature, the manufacturing cost of electric vehicles has been gradually reduced. At the same time, the government and local subsidies and other favorable policies to guide the development of the electric vehicle market have a positive meaning.
Then if the future electric vehicle two-way charging system becomes standard, like the recently released Beiqi EV200, the price after subsidy is only 169,900 yuan. Apart from the daily expenses of a few dollars, the surplus power is sold to the national grid every day. , Shave to keep the car costs, but also a net profit of more than a dozen, both to enjoy the green and convenient way to travel, but also "secretly" a private money, male compatriots must be happy to blossom it!
In terms of the two-way link between the electric vehicle and the national grid, this technology also extends to the “rotary back-up†service that is sorely needed by the traditional electric power industry. Spinning reverse (spinning reverse) refers to the normal running generator to maintain the rated speed, can be connected to the grid at any time, or has been connected to the grid but only with a part of the load, the generator can be added to the rated capacity at any time. At present, to achieve the basic "rotary standby" function, the need for extra consumption of quantitative fuel (more use of natural gas), but in fact the battery of an electric vehicle is fully capable of doing this job, and green pollution-free.
From this point of view, the characteristics of an electric vehicle determine the effect of its secondary development or even multiple developments. Besides acting as a means of transport, it can also provide energy for the regional grid, driving generators to provide backup power, and even in disasters. In the event of a power failure, it is used as a home emergency power source. These are refreshed on an hourly basis with a small aggregator to automatically determine what services the system should provide. So far, no similar system has been commercially available, enabling low-valley valley charging and peak power selling. At the same time, because the power frequency supervision market is profitable and the battery capacity of electric vehicles is relatively small, most car owners generally choose to travel during the peak period of electricity use. These are the reasons for the secondary development of two-way charging systems and electric vehicles. The reason for entering ordinary families' homes.
PVC Pipe Belling Machine is a Plastic Auxiliary Machinery of PVC Pipe Making Machine
This plastic pipe belling machine is suitable for PVC/PE/PP solid-wall pipe or corrugated pipe-for pipe connection. It has three types: "U" type and "R" type and "J "type
We could provide full-automatic or semi-automatic belling machine for plastic pipe according to customers' requirements, pipe range Φ50-630mm, and we could also provide "U" type and "R" type and "J" type for convenient installation and connection of pipe in the light of customers' requirements.
Pvc Pipe Belling Machine,pipe belling machines,pvc belling machine,Belling Machine
zhangjiagang sevenstars machinery co.,ltd , https://www.sevenstars-machineries.com