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Title: Intelligent tap changer duty cycle control for load voltage improvement
Authors: Chang, C.S. 
Huang, J.S.
Keywords: Adaptive fuzzy logic control
Dynamic load characteristics
Load voltage improvement
OLTC duty cycle
Tap-change affectivity
Target voltage
Voltage stability
Issue Date: Oct-1997
Citation: Chang, C.S.,Huang, J.S. (1997-10). Intelligent tap changer duty cycle control for load voltage improvement. Electric Power Systems Research 43 (1) : 1-10. ScholarBank@NUS Repository.
Abstract: Voltage stability of a power system is related to load characteristics and voltage control devices such as on-load tap-changing (OLTC) transformers. This paper discusses the need for enhancing the OLTC operation, and identifies five control requirements for intelligent control of the OLTC duty cycle. The paper also describes an adaptive fuzzy logic controller (AFLC) developed for satisfying these requirements. By simulations on a six-bus study system, the ALFC is shown to be an effective means of enhancing the OLTC operation. The five control requirements are fulfilled by preventing the reverse actions, suppressing voltage transients, reducing control errors, and ensuring fast response and robustness. © 1997 Elsevier Science S.A.
Source Title: Electric Power Systems Research
ISSN: 03787796
Appears in Collections:Staff Publications

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