Coordinated frequency control through MTDC transmission systems
2015 (English)In: IFAC Proceedings, Elsevier, 2015, Vol. 48, no 22, 106-111 p.Conference paper (Refereed)Text
In this paper we propose a distributed dynamic controller for sharing frequency control reserves of asynchronous AC systems connected through a multi-terminal HVDC (MTDC) grid. We derive sufficient stability conditions, which guarantee that the frequencies of the AC systems converge to the nominal frequency. Simultaneously, the global quadratic cost of power generation is minimized, resulting in an optimal distribution of generation control reserves. The proposed controller also regulates the voltages of the MTDC grid, asymptotically minimizing a quadratic cost function of the deviations from the nominal voltages. The proposed controller is tested on a high-order dynamic model of a power system consisting of asynchronous AC grids, modelled as IEEE 14 bus networks, connected through a six-terminal HVDC grid. The performance of the controller is successfully evaluated through simulation.
Place, publisher, year, edition, pages
Elsevier, 2015. Vol. 48, no 22, 106-111 p.
IdentifiersURN: urn:nbn:se:kth:diva-187103DOI: 10.1016/ifacol.2015.10.315ScopusID: 2-s2.0-84954323220OAI: oai:DiVA.org:kth-187103DiVA: diva2:929389
5th IFAC Workshop on Distributed Estimation and Control in Networked Systems, NecSys 2015; University of Pennsylvania in PhiladelphiaPhiladelphia; United States
QC 201605182016-05-182016-05-172016-05-18Bibliographically approved