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Energies 2013, 6(8), 3692-3705; doi:10.3390/en6083692

EMS-Data-Based Load Modeling to Evaluate the Effect of Conservation Voltage Reduction at a National Level

1
Department of Electrical Engineering, Myongji University, Yongin 449-728, Korea
2
Department of System Operation and Control, Korea Power Exchange, Seoul 135-791, Korea
3
Department of Electrical Engineering, Chonnam National University, Gwangju 500-757, Korea
*
Author to whom correspondence should be addressed.
Received: 28 May 2013 / Revised: 12 July 2013 / Accepted: 15 July 2013 / Published: 25 July 2013
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Abstract

This paper proposes a linearized load model to evaluate the effect of conservation voltage reduction at a national level. In this model, the respective active and reactive linearizing parameters for active and reactive loads in a power system are estimated using energy management system (EMS) data resulting from conservation voltage reductions. To verify the validity of the linearized load model, PSS/E simulations were conducted for a test power system. Given that conservation voltage reductions are usually executed in the range of 2.0%–5.0%, the proposed model was found to be sufficient to accurately evaluate the effect of conservation voltage reduction. Additionally, Korean EMS data were used to estimate the linearizing parameters for aggregated loads in an actual power system.
Keywords: conservation voltage reduction; energy management system; linearized load modeling; linearizing parameter; PSS/E simulations conservation voltage reduction; energy management system; linearized load modeling; linearizing parameter; PSS/E simulations
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Nam, S.-R.; Kang, S.-H.; Lee, J.-H.; Choi, E.-J.; Ahn, S.-J.; Choi, J.-H. EMS-Data-Based Load Modeling to Evaluate the Effect of Conservation Voltage Reduction at a National Level. Energies 2013, 6, 3692-3705.

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