[Legacy Report] IEEE UP PES/IAS Chapter Lecture on Utility Scale Energy Storage Systems - Applications and Technologies

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Energy storage is not a new concept and has been the integral component of electric power systems for more than a century. The energy storage requirements have traditionally been met by the physical storage of fuels for fossil fuelled power plants and by the use of generated power in pumped hydro storage schemes.
The electric power landscape has recently moved towards greater use of renewable energy in the form of solar and wind. While this type of power generation is more sustainable, delivering reliable power on demand becomes extremely challenging. The power output of wind and solar power installations is intermittent and highly variable. When the wind blows or the sun shines, excess power can be stored and made available during peak load conditions. The intermittency and variability has led to greater demand for energy storage facilities to support the grid.
Such fundamental changes in the architecture and controllability of the grid requires efficient and smart power transmission and distribution networks. Electricity storage systems can be employed to manage the amount of power required to supply customers at times when need is greatest, that is during peak load conditions. These devices can also make renewable energy, whose power output cannot be controlled by grid operators, smooth and dispatchable. Energy storage systems are also needed to balance microgrids to achieve a good match between generation and load. Storage devices can provide frequency regulation to maintain the balance between the load on network and power generated. Thus, energy storage holds substantial promise for transforming the electric power industry.
While it is not possible to store energy in the form of electricity, it is possible to convert electrical energy to another form that can be stored. The stored energy then can be converted back to electricity when it is needed. Energy storage systems can be deployed to any of the five major subsystems in the electric power system i.e. generation, transmission, substations, distribution, and end consumers. There are a wide variety of possible forms in which the energy can be stored. Most common examples include chemical energy (batteries), kinetic energy (flywheels or compressed air), gravitational potential energy (pumped hydroelectric), and energy in the form of electrical (capacitors) and magnetic fields (SMES). From the standpoint of the electrical system, these energy storage systems act as loads while energy is being stored (e.g. while charging a battery) and sources of electricity when the energy is returned to the system (e.g. while discharging a battery). These solutions are designed to enhance flexibility, increase energy securities and minimize environment impacts.
This talk would focus on benefits, applications and technologies of utility scale energy storage systems.

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• Kanpur, Uttar Pradesh
• India

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• Co-sponsored by Yogesh Singh Chauhan