Lithium Battery Electric Cars

Lithium tapped for Storage Community

An intelligent network project in Ohio will check if the electricity company follow the history of computing, storage moving the center to the periphery of the network.

International Start-up battery said Monday it has been selected to supply lithium-ion batteries for energy storage pilot project managed by Community AEP utility set to go online by the middle of this year.

The storage units will be about the size of transformers on base, boxes about the size refrigerator stage high voltage current on transmission lines for local service, "said Ake Almgren, the CEO of International Battery.

The energy storage community will be part of an intelligent network project, which EPA is the installation of smart meters and other technologies to reduce energy consumption in an area of 150 square-mile north Ohio. Installing storage units, one of many Department of Energy-sponsored projects of network storage is provided to begin in May and will continue until mid next year, according to an EPA representative.

AEP is at the forefront of the use of energy storage on the electricity grid, which could help utilities use more wind and intermittent solar energy and reduce electricity demand during peak periods. It has already installed sodium sulfur batteries of NGK Insulators of Japan to a handful of sub-stations, which can provide 1 or 2 megawatts of power for several hours.

With its energy storage in the Community project, however, he will have to use smaller batteries with different technology. At each location, the utility plans to install at least one storage unit 25-kilowatt able to offer one hour of electricity, or 25 kilowatt hours of energy. EPA plans to try different configurations, but nearly 10 units in total, will store a value of 2 megawatts' capacity, the EPA representative said.

The hope is that networks of these storage boxes relatively low energy can provide the same services as larger units, such as power network at peak times or provide relief in case of failure.

"You can combine these batteries, so you do not see them as units isolated autonomous, but as a family that allows the storage battery, "said Almgren International Battery." These units will be smart, so that by time of day and the price, you can decide when to provide or store energy. "

S & C Electric, which is the systems integrator on the project, said that the distributed storage architecture will reduce losses power during transmission and make it easier to use wind or solar energy community. One battery could supply 25 kilowatts of for five units, or a mall for about an hour, Almgren said.

Other potential applications are using storage to ensure that networks of plug-in electric cars do not override a local distribution network, which is a serious concern for public services, if several people in a district office at the time.

The long-term vision of energy storage in the Community is to have dozens or hundreds in a space that would allow a utility to also use the stored energy to maintain a regular frequency on the grid, Almgren said.

large batteries

When testing network storage, a number of different storage technologies are considered conditioners work, including flywheels, giant cells, and even the air-assisted ice. Lithium ion battery company A123 Systems announced last November that AES usefulness to a value of 12 megawatts of batteries on the grid in Chile to regulate system frequency.

But the energy needs for the energy storage community are somewhat different than large centralized systems, "said Almgren. Compared to the technology holder Lithium-ion battery, battery International manufactures batteries can store much energy in a relatively small space. Instead of building a battery of hundreds or thousands of small cylindrical cells, the company packs brick size using prismatic cells, he explained.

"Since you have these building blocks more, you can monitor and control each individually … This allows us to optimize the system, "Almgren.

Although simple in concept, community systems of energy storage are still a number of technical challenges and business before they become commonplace.

Storage, especially for battery systems to large scale, are expensive and can be difficult for utilities to justify financially under traditional regulations, which are structured around central investments. Technically, there are a number challenges for the storage units on a small scale, which must to operate reliably in a wide range of temperatures and contact with other intelligent network hardware, like smart meters.

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