Fast frequency response from offshore multi-terminal VSC-HVDC schemes

Adeuyi, Oluwole, Cheah, Marc, Liang, Jun ORCID: https://orcid.org/0000-0001-7511-449X and Jenkins, Nicholas ORCID: https://orcid.org/0000-0003-3082-6260 2016. Fast frequency response from offshore multi-terminal VSC-HVDC schemes. IEEE Transactions on Power Delivery 32 (6) , pp. 2442-2452. 10.1109/TPWRD.2016.2632860

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Abstract

This paper analyses the frequency support characteristics of multi-terminal VSC-HVDC (MTDC) schemes using the energy transferred from wind turbine rotating mass and other AC systems. An alternative coordinated control (ACC) scheme, which gives priority to a frequency versus active power droop fitted to onshore VSCs is proposed to: (i) transfer wind turbine recovery power to undisturbed AC grids and (ii) allow correct control operation of MTDC systems during multiple power imbalances on different AC grids. The fast frequency response capability of MTDC systems equipped with the proposed ACC scheme is compared against a coordinated control (CC) scheme, which uses a frequency versus DC voltage droop. The frequency control schemes are demonstrated on an experimental test rig which represents a 3-terminal HVDC system. Also, the MTDC frequency support capability when wind farms do not provide extra power is tested using a 4-terminal HVDC system.

Item Type:	Article
Date Type:	Published Online
Status:	Published
Schools:	Engineering
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Uncontrolled Keywords:	frequency control, hardware-in-the-loop simulation, inertial response, multi-terminal VSC-HVDC (MTDC) transmission, offshore wind farm.
Additional Information:	PDF uploaded in accordance with publisher's policies at http://www.sherpa.ac.uk/romeo/issn/0885-8977/ (accessed 16.12.16).
Publisher:	Institute of Electrical and Electronics Engineers
ISSN:	0885-8977
Funders:	RCUK, EC, EPSRC
Date of First Compliant Deposit:	16 December 2016
Date of Acceptance:	17 November 2016
Last Modified:	08 May 2023 11:44
URI:	https://orca.cardiff.ac.uk/id/eprint/96374

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