A new decentralised controller design method with application to power-system stabiliser design |
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| Affiliation: | 1. School of Engineering, University of Sussex, Falmer, Brighton, Sussex BN1 9QT, UK;2. North China Electric Power University, Beijing, 102206, People''s Republic of China;3. School of Engineering and Computer Science, University of Exeter, Exeter, EX4 4QJ, UK;1. State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, PR China;2. Brain-inspired Integrated Chip and Systems Research Center, University of Electronic Science and Technology of China, Chengdu 610054, PR China;3. School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore;1. State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, School of Control and Computer Engineering, North China Electric Power University, Beijing 102206, PR China;2. Guodian New Energy Technology Research Institute Co., Ltd, Beijing 102209, PR China;1. School of Electronic and Information Engineering, University of Science and Technology Liaoning, Anshan, Liaoning 114051, PR China;2. Graduate School, University of Science and Technology Liaoning, Anshan, Liaoning 114051, PR China;3. School of Science, University of Science and Technology Liaoning, Anshan, Liaoning 114051, PR China |
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| Abstract: | It is known that decentralised stabilising controller design for a large-scale system can be translated into an equivalent problem of decentralised controller design for a multi-input multi-output (MIMO) control system. This paper shows that, subject to a condition based on the structured singular values, each local controller can be designed independently. The stability condition for the overall system can be easily stated as the achievement of a sufficient interaction margin, introduced in earlier work, together with a sufficient gain and phase margin, defined using classical feedback theory during each independent design. The suggested design approach is applied to the decentralised design of a power-system stabiliser for a model of a practical 10-machine power system. The potentials and limitations of the suggested design approach in its current form, and possibilities for further research, are also discussed in this paper. |
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