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Smart demand for improving short-term voltage control on distribution networks

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4 Author(s)
Garcia-Valle, R. ; Dept. of Electr. Eng., Tech. Univ. of Denmark, Lyngby, Denmark ; da Silva, L.C.P. ; Xu, Z. ; Ostergaard, J.

Smart grids must involve active roles from end users in order to be truly smart. The energy consumption has to be done in a flexible and intelligent manner, in accordance with the current conditions of the power system. Moreover, with the advent of dispersed and renewable generation, increasing customer integration to aid power system performance is almost inevitable. This study introduces a new type of smart demand side technology, denoted demand as voltage controlled reserve (DVR), to improve short-term voltage control, where customers are expected to play a more dynamic role to improve voltage control. The technology can be provided by thermostatically controlled loads as well as other types of load. This technology is proven to be effective in case of distribution systems with a large composition of induction motors, where the voltage presents a slow recovery characteristic due to deceleration of the motors during faults. This study presents detailed models, discussion and simulation tests to demonstrate the technical viability and effectiveness of the DVR technology for short-term voltage control.

Published in:

Generation, Transmission & Distribution, IET  (Volume:3 ,  Issue: 8 )