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In this paper, a reactive power (Q) balance strategy is proposed to enhance the stability of the HVDC inverter connected to weak grids. The main circuit topology of a new line-commutated-converter (LCC)-based HVDC system is presented, where a new converter transformer and related fully tuned (FT) branches are included in the converter subsystem for implementing an inductive filtering method. The phasor analysis is used to reveal a special Q-compensation performance of the new LCC-HVDC system. Then, an equivalent impedance representation, which takes the Q-compensation degree at the ac valve side of the converter into consideration, is established by a mathematical modeling. Based on these, the impact of the inductive filtering on the Q-compensation characteristic of the converter is investigated under different HVDC control modes (e.g., constant dc-current and dc-voltage controls at the rectifier and the inverter sides, respectively). Finally, both the transient simulation and experimental results validate the theoretical analysis, and further demonstrate that the proposed Q-balance strategy can compensate reactive power near the converter bridges (the Q-absorber), widen the operating range of the converter, and enhance the stability of the LCC-HVDC connected with weak grids.

Titel:	Realization of Reactive Power Compensation Near the LCC-HVDC Converter Bridges by Means of an Inductive Filtering Method
Autor/in / Beteiligte Person:	YONG, LI ; LONGFU, LUO ; REHTANZ, Christian ; RÜBERG, Sven ; FUSHENG, LIU
Link:	Volltext View record from PASCAL Archive
Zeitschrift:	IEEE transactions on power electronics, Jg. 27 (2012), Heft 9-10, S. 3908-3923
Veröffentlichung:	New York, NY: Institute of Electrical and Electronics Engineers, 2012
Medientyp:	academicJournal
Umfang:	print, 22 ref
ISSN:	0885-8993 (print)
Schlagwort:	Electrical engineering Electrotechnique Sciences exactes et technologie Exact sciences and technology Sciences appliquees Applied sciences Electronique Electronics Appareillage électronique et fabrication. Composants passifs, circuits imprimés, connectique Electronic equipment and fabrication. Passive components, printed wiring boards, connectics Electrotechnique. Electroenergetique Electrical engineering. Electrical power engineering Electronique de puissance, alimentations électriques Power electronics, power supplies Electroénergétique Electrical power engineering Réseaux et lignes électriques Power networks and lines Réseaux à courant continu Direct current networks Exploitation. Commande de charge. Fiabilité Operation. Load control. Reliability Architecture circuit Circuit architecture Arquitectura circuito Commande puissance Power control Control potencia Commande tension Voltage control Control tensión Compensation énergie réactive Reactive current compensation Compensación energía reactiva Conception circuit Circuit design Diseño circuito Convertisseur puissance courant continu haute tension HVDC power convertors Courant continu Direct current Corriente contínua Electronique puissance Power electronics Electrónica potencia Etude expérimentale Experimental study Estudio experimental Evaluation performance Performance evaluation Evaluación prestación Implémentation Implementation Implementación Impédance Impedance Impedancia Modèle mathématique Mathematical model Modelo matemático Onduleur Inverter Ondulador Phaseur Phasor Fasor Puissance réactive Reactive power Potencia reactiva Redresseur Rectifier Rectificador Simulation système System simulation Simulación sistema Soupape Valve Válvula Sous système Subsystem Subsistema Système courant continu haute tension HVDC systems Transformateur Electric transformer Transformador eléctrico -High-voltage direct current (HVDC) inductive filtering method line-commutated converter (LCC) reactive power compensation stability
Sonstiges:	Nachgewiesen in: PASCAL Archive Sprachen: English Original Material: INIST-CNRS Document Type: Article File Description: text Language: English Author Affiliations: College of Electrical and Information Engineering, Hunan University, Changsha 410082, China ; Institute of Energy Systems, Energy Efficiency and Energy Economics, TU Dortmund University,, Dortmund 44227, Germany ; Institute of Energy Systems, Energy Efficiency and Energy Economics, TU Dortmund University, Dortmund 44227, Germany Rights: Copyright 2015 INIST-CNRS ; CC BY 4.0 ; Sauf mention contraire ci-dessus, le contenu de cette notice bibliographique peut être utilisé dans le cadre d’une licence CC BY 4.0 Inist-CNRS / Unless otherwise stated above, the content of this bibliographic record may be used under a CC BY 4.0 licence by Inist-CNRS / A menos que se haya señalado antes, el contenido de este registro bibliográfico puede ser utilizado al amparo de una licencia CC BY 4.0 Inist-CNRS Notes: Electrical engineering. Electroenergetics ; Electronics

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Realization of Reactive Power Compensation Near the LCC-HVDC Converter Bridges by Means of an Inductive Filtering Method