NDLI: Impact of phase-locked loop on small-signal dynamics of the line commutated converter-based high-voltage direct-current station

Content Provider	IET Digital Library
Author	Guo, Chunyi Zhao, Chengyong Iravani, Reza Ding, Hui Wang, Xiaolin
Abstract	This study investigates the impact of phase-locked loop (PLL) and DC-side voltage controller on small-signal dynamics of the high-voltage direct-current (HVDC) inverter station system which utilises line commutated converter (LCC) technology. The studies are conducted based on eigenanalysis of a linearised model of a study system and verified by time-domain simulation studies in the PSCAD platform. The studies show that under weak grid conditions, e.g. short-circuit ratio (SCR) = 1, parameters of PLL and DC-side voltage controller of the LCC-HVDC station can highly impact the damping of the oscillatory modes and even cause instability. The studies also show that the voltage control parameters can be selected to prevent PLL-induced instability. The studies also (i) show that maximum available power and critical SCR are highly affected by PLL and DC-side voltage control and (ii) propose a procedure to systematically determine these indices.
Starting Page	1311
Ending Page	1318
Page Count	8
ISSN	17518687
Volume Number	11
e-ISSN	17518695
Issue Number	Issue 5, Mar (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/11/5
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2016.1449
Journal	IET Generation, Transmission & Distribution
Publisher Date	2017-01-03
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Commutation Control of Electric Power System D.C. Transmission DC-side Voltage Controller Demodulator Discriminators And Mixers Eigen Values And Eigen Function Eigenanalysis High-voltage Direct-current Inverter Station System HVDC Inverter Station System HVDC Power Converter HVDC Power Transmission LCC Technology LCC-HVDC Station Line Commutated Converter Technology Mathematical Analysis Modulator Oscillatory Mode Damping Phase Locked Loop PLL-induced Instability Power Converter Power Supplies to Apparatus PSCAD Platform SCR Short-circuit Ratio Time Domain Analysis Time-domain Simulation Studies Voltage Control Voltage Control Parameter
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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