NDLI: Power flow control capability of the power transistor-assisted Sen transformer and the unified power flow controller: a close comparison

Content Provider	IET Digital Library
Author	Mohamed, Salah Eldeen Gasim
Abstract	Currently, transmission grids are subject to experience more operation and control difficulties. The use of power flow controllers (PFCs) can ease such difficulties. However, most competent PFCs need to be used. Cost-wise, the power transistor assisted Sen transformer (TAST) is attractive as compared to the unified PFC (UPFC). However, while the UPFC has three control parameters, the TAST has only two. The UPFC can regulate the voltage of its shunt bus while the TAST cannot. The main objective of this study is to investigate the extent to which the TAST and UPFC are comparable when used for power flow control. Power flow control is performed in this study for congestion management using a TAST/UPFC in a modified IEEE-118 bus system. A TAST/UPFC is optimally located using sensitivity analysis. For the sake of validation, results are obtained using both load flow analysis and voltage vector analysis. With only two control parameters, the performance of the TAST is found very closely comparable to that of the UPFC. Accordingly, the TAST can competently replace the UPFC for application of power flow control, at a far lower cost. Nonetheless, appropriate limited angle TAST is a suitable substitute for the TAST at a further lower cost.
Starting Page	3033
Ending Page	3041
Page Count	9
ISSN	17518687
Volume Number	14
e-ISSN	17518695
Issue Number	Issue 15, Aug (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/14/15
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2020.0114
Journal	IET Generation, Transmission & Distribution
Publisher Date	2020-04-30
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	A.c. Transmission Control Difficulties Control of Electric Power System Control Parameter Flexible AC Transmission System Load Flow Load Flow Control Optimisation Technique Power Flow Control Capability Power Flow Controller Power System Control Power Transistor-assisted Sen Transformer Power Transmission Control Sensitivity Analysis Unified Power Flow Controller
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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