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Title: Improving power grid transient stability by plug-in electric vehicles
Authors: Gajduk, A.Todorovski, M.Kurths, J.Kocarev, L.
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Issue Date: 2014
Published in: New Journal of Physics Vol. 16 (2014)
Publisher: Bristol : Institute of Physics Publishing
Abstract: Plug-in electric vehicles (PEVs) can serve in discharge mode as distributed energy and power resources operating as vehicle-to-grid (V2G) devices and in charge mode as loads or grid-to-vehicle devices. It has been documented that PEVs serving as V2G systems can offer possible backup for renewable power sources, can provide reactive power support, active power regulation, load balancing, peak load shaving, can reduce utility operating costs and can generate revenue. Here we show that PEVs can even improve power grid transient stability, that is, stability when the power grid is subjected to large disturbances, including bus faults, generator and branch tripping, and sudden large load changes. A control strategy that regulates the power output of a fleet of PEVs based on the speed of generator turbines is proposed and tested on the New England 10-unit 39-bus power system. By regulating the power output of the PEVs we show that (1) speed and voltage fluctuations resulting from large disturbances can be significantly reduced up to five times, and (2) the critical clearing time can be extended by 20-40%. Overall, the PEVs control strategy makes the power grid more robust.
Keywords: power systems; transient stability; vehicle-to-grid; Electric discharges; Electric power distribution; Electric vehicles; Energy policy; Fleet operations; Operating costs; Stability; Standby power systems; Active power regulations; Critical clearing time; Distributed energies; Plug-in Electric Vehicles; Reactive power support; Vehicle to grids; Vehicleto-Grid (V2G); Voltage fluctuations; Vehicles
DDC: 620
License: CC BY 3.0 Unported
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