NDLI: Hybrid control strategy for effective frequency regulation and power sharing in multi-terminal HVDC grids

Content Provider	IET Digital Library
Author	Kumar, Ancha Satish Padhy, Bibhu Prasad
Abstract	This study proposes a hybrid control (HC) strategy for improved frequency regulation and power sharing in multi-terminal HVDC (MTDC) integrated AC grids. The proposed method uses the topology of bi-polar converters in the MTDC system to improve power sharing and frequency regulation. In this methodology, the two voltage source converters (VSCs) in a bi-polar topology are operated with individual specified control methods. In the proposed HC method, one of the converters operate in voltage square frequency droop ( PV 2 f ) and another in power frequency droop (Pf) control methods. This HC strategy is implemented for grid side voltage source converters in MTDC grids. Further, the performance of frequency regulation and autonomous power sharing of the proposed HC technique is compared with the conventional voltage and frequency droop (PVf) and improved PV 2 f control methodologies. In order to validate the proposed method, two AC-MTDC systems are considered. In both the systems, mesh typed MTDC CIGRE B4 DC test system is in common, it is integrated with two-area power system and New England IEEE 39-bus system to form two different AC-MTDC systems.
Starting Page	5536
Ending Page	5546
Page Count	11
ISSN	17518687
Volume Number	14
e-ISSN	17518695
Issue Number	Issue 23, Dec (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/14/23
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2020.0921
Journal	IET Generation, Transmission & Distribution
Publisher Date	2020-09-14
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Autonomous Power Sharing Bipolar Converter Bipolar Topology Control of Electric Power System Conventional Voltage D.C. Transmission Different AC-MTDC System Effective Frequency Regulation Frequency Control HC Method HC Strategy HC Technique HVDC Power Converter HVDC Power Transmission Hybrid Control Strategy IEEE Standards Improved Frequency Regulation Individual Specified Control Method MTDC CIGRE B4 DC Test System MTDC Grid MTDC System Multiterminal HVDC Integrated AC Grid Power Converter Power Frequency Droop Control Method Power Grid Power Supplies to Apparatus Power System Control Power Transmission Control Power Transmission Reliability PV2f Control Methodologies Reliability Two-area Power System Voltage Control Voltage Source Converter Voltage Square Frequency Droop Voltage-source Converter
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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