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Hierarchical Two-Level Voltage Controller for Large Power Systems.

Authors :
Venkatasubramanian, Vaithianathan
Guerrero, Javier
Su, Jingdong
Chun, Hong
Zhang, Xun
Habibi-Ashrafi, Farrokh
Salazar, Armando
Abu-Jaradeh, Backer
Source :
IEEE Transactions on Power Systems; Jan2016, Vol. 31 Issue 1, p397-411, 15p
Publication Year :
2016

Abstract

This paper proposes a two-level voltage controller for large-scale power systems. The aim of the controller is to maintain a near-optimal voltage profile in the transmission network by coordinating discrete reactive power (var) control devices in the system. The controller is targeted for implementation in electric power transmission utility companies where most of the voltage controls are coordinated by switching of discrete var devices such as shunt capacitor and reactor banks and transformer banks load tap changers (LTCs). By effectively dividing the controller responsibilities between local substation controls and a central coordinator at control center level, the design is aimed at voltage control of large-scale power systems. At local level, the substation controllers maintain their respective substation bus voltages by local power-flow-like computations using mostly local PMU measurements. The central coordinator computes and provides the voltage set-points to the substation controllers and also coordinates by enabling or disabling the local controllers as needed. The controller is being designed towards prototype implementation in Southern California Edison (SCE), starting with local controllers at specific substations in the first stage. It is tested on real-time dynamic models and large-scale power-flow simulations of SCE transmission network. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
08858950
Volume :
31
Issue :
1
Database :
Complementary Index
Journal :
IEEE Transactions on Power Systems
Publication Type :
Academic Journal
Accession number :
111983822
Full Text :
https://doi.org/10.1109/TPWRS.2015.2406279