NDLI: Fault resilient multi-terminal high voltage direct current systems using distributed corrective power dispatch

Content Provider	IET Digital Library
Author	Mojallal, Aslan Lotfifard, Saeed Azimi, Seyed Mohammad
Abstract	A distributed secondary layer control scheme for multi-terminal high voltage direct current (MTDC) transmission systems is proposed. The proposed control scheme is achieved via solving a multi-objective optimization problem. The objectives are defined such that: (i) the power losses of the system are minimized and (ii) the resiliency of the system in facing large disturbances and faults is enhanced. The second objective prevents the constant power converters to change their intended operating mode to avoid over-voltages. Hence, the proposed scheme enhances the power commitment of such buses despite the occurrence of faults and large disturbances in the system. The proposed secondary controller is implemented in a distributed architecture using optimality condition decomposition. By employing the distributed scheme, the computational burden of the secondary level control is decreased and the autonomy of each zone in the MTDC grid is increased. The CIGRE B4 MTDC test system is employed to demonstrate the effectiveness of the proposed method. PSCAD and MATLAB are used to perform the simulations for the case studies. The simulation results verify that the proposed method enhances the resiliency of the MTDC systems by avoiding undesirable change of operations mode of constant power converters while decreasing losses of the system.
Starting Page	4391
Ending Page	4399
Page Count	9
ISSN	17518687
Volume Number	13
e-ISSN	17518695
Issue Number	Issue 19, Oct (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/13/19
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2018.7010
Journal	IET Generation, Transmission & Distribution
Publisher Date	2019-08-14
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	CIGRE B4 MTDC Test System Constant Power Converter Constant Power Voltage Source Converter Control of Electric Power System Corrective Power Dispatch D.C. Transmission Different System Operators Distributed Architecture Distributed Power Generation Distributed Scheme Distributed Secondary Layer Control Scheme Fault Resilient Multiterminal High Voltage Direct Current System HVDC Power Converter HVDC Power Transmission Intended Operating Mode Load Flow Control MTDC System Multiobjective Optimisation Problem Multiterminal High Voltage Direct Current Transmission System Optimisation Optimisation Technique Over-voltages Power Commitment Power Converter Power Generation Control Power Grid Power Loss Power System Control Power System Stability Power Transmission Control Secondary Controller Secondary Level Control Voltage Control
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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