Title A Unified Power Flow Controller Using a Power Electronics Integrated Transformer
Authors Elsaharty M.A., Luna A., Candela J.I., RODRÍGUEZ CORTÉS, PEDRO, RODRÍGUEZ CORTÉS, PEDRO
External publication No
Means IEEE Trans Power Delivery
Scope Article
Nature Científica
JCR Quartile 1
SJR Quartile 1
JCR Impact 3.68100
Area International
Web https://www.scopus.com/inward/record.uri?eid=2-s2.0-85066402903&doi=10.1109%2fTPWRD.2019.2897601&partnerID=40&md5=12d3a8a3a512afdf5929385564c4aa89
Publication date 01/01/2019
ISI 000469337200005
Scopus Id 2-s2.0-85066402903
DOI 10.1109/TPWRD.2019.2897601
Abstract This paper presents a Unified Power Flow Controller (UPFC) application of the Custom Power Active Transformer (CPAT); a power electronics integrated transformer which provides services to the grid through its auxiliary windings. The CPAT structure integrates three single-phase transformers into one shunt-series combining transformer. This integration empowers a sub-station with the capability of dynamically regulating the terminal voltage and current of a transformer through isolated power electronics converters. This paper investigates the CPAT's capability to provide UPFC services which includes power flow control, reactive power compensation, voltage regulation, and harmonics elimination. Simulations of the CPAT-UPFC with a stiff grid and a 5-bus power system demonstrates its functionality as an inter-bus coupling transformer that provides the required grid services. Moreover, the impact of the CPAT-UPFC during load perturbations on the power system is investigated to further validate its transient and steady-state response. Furthermore, an experimental prototype reveals the operation of the three-phase CPAT-UPFC confirming its stable operation according to the theoretical expectations. © 2018 IEEE.
Keywords Controllers; Electric load flow; Electric power system control; Electric power transmission; Electric power transmission networks; Flow control; Magnetic circuits; Power electronics; Power transformer
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