RESEARCH ON μ SYNTHESIS BASED HYDROTURBINE GOVERNOR DESIGN

Öz

A novel hydroturbine governor scheme based on networked control system (NCS) is proposed. The key problem of the scheme rest with the time delay existing in the data communication in NCS as the time delay may be a detriment to governor system  stability and may degrade system robustness. In order to guarantee the governor system stable with time delay, the uncertain delay model is modeled as multiplicative perturbation, and a  μ  synthesis based robust governor is presented. The result verifies feasibility of the robust controller.

Anahtar Kelimeler

• NCS, μ-synthesis, robust control, governor, time delay

Kaynakça

1. Walsh, G.C.; Hong Ye. "Scheduling of networked control systems". IEEE Control Systems Magazine, vol. 21,pp.57-65, Feb.2001
2. Walsh, G.C.; Hong Ye; Bushnell, "Stability analysis of networked control systems ". IEEE Trans. Control Systems Technology, vol. 10, pp.438-446, May 2002.
3. D.Findiay, H.Davie, T.R.Foord, A.G.Marshall, "Microprocessor-based adaptive water-turbine governor ", IEE Proc. vol. 127,pt C, No 6,pp.360-369, 1980
4. L.Ye, S.Wei, O.P.Malik, "An intelligent self-improving control strategy and its microprocessor –based implementation for application to a hydroturbine governing system". Canadian Journal of Electrical and Computer Engineering, vol. 1, No.4, 1990. [5] P. Kundur. Power System Stability and Control .New York: McGraw- Hill, 1994.
5. Z.J.palmor. "Time-delay compensationSmith predictor and its modifications", the Control Handbook, CRC press, 1996
6. Y.Halevi, R.Asok. "Integrated communication and control system: part", Journal of Dynamic Systems, Measurement, and control, vol.110, pp.367381, 1988
7. Hongxia Wu; Tsakalis, K.S.; Heydt, G.T.; "Evaluation of time delay effects to widearea power system stabilizer design ", IEEE Trans. Power Systems, vol.19, pp.19351941, Nov. 2004
8. F.L.Lian, J.R.Moyne, D.M.Tilbury. "Performance evaluation of control network: Ethernet, controlNet, and Devicenet", IEEE control system magazine, vol. 21, pp.66-83, Feb. 2001.