Nonlinear adaptive control for multi‐machine power systems with boiler‐turbine‐generator unit

Summary This paper studies the stability of multi-machine power systems via simultaneous design of boiler fuel flow control, turbine main steam valve control and generator excitation control for the boiler-turbine-generator unit. Because the whole system is coupled among generators and has multi-parametric uncertainties, the decentralized adaptive coordinated controller design is considered and is based on the adaptive backstepping method. Moreover, in addition to the transient stability of the power angle and power oscillation, the voltage regulation is also an important property in power systems. Thus, the global control technique is used to simultaneously ensure both the transient stability and the voltage regulation. Furthermore, we improve the transient performance of power systems greatly by introducing the state-constrained control. Simulation results show the effectiveness and advantage of the proposed controller. Copyright © 2014 John Wiley & Sons, Ltd.

[1]  Francis Eng Hock Tay,et al.  Barrier Lyapunov Functions for the control of output-constrained nonlinear systems , 2009, Autom..

[2]  Romeo Ortega,et al.  An energy-shaping approach to the design of excitation control of synchronous generators , 2003, Autom..

[3]  Romeo Ortega,et al.  A “Globally” Convergent Controller for Multi-Machine Power Systems Using Structure-Preserving Models , 2009, IEEE Transactions on Automatic Control.

[4]  Tao Yu,et al.  Coordinated robust nonlinear boiler-turbine-generator control systems via approximate dynamic feedback linearization , 2010 .

[5]  Le Wei,et al.  Backstepping-based nonlinear adaptive control for coal-fired utility boiler–turbine units , 2011 .

[6]  Ravi N. Banavar,et al.  Stabilization of a synchronous generator with a controllable series capacitor via immersion and invariance , 2012 .

[7]  J. De Leon-Morales,et al.  Robust excitation control design using sliding-mode technique for multimachine power systems , 2008 .

[8]  Murat Arcak,et al.  Constructive nonlinear control: a historical perspective , 2001, Autom..

[9]  Alessandro Astolfi,et al.  Transient stabilization of multimachine power systems with nontrivial transfer conductances , 2005, IEEE Transactions on Automatic Control.

[10]  Tapan Kumar Saha,et al.  A power system nonlinear adaptive decentralized controller design , 2010, Autom..

[11]  Georgi M. Dimirovski,et al.  Adaptive coordinated passivation control for generator excitation and thyristor controlled series compensation system , 2009 .

[12]  E. Cheres.  Small and medium size drum boiler models suitable for long term dynamic response , 1990 .

[13]  Alexander G. Loukianov,et al.  Multimachine Power-System Control: Integral-SM Approach , 2009, IEEE Transactions on Industrial Electronics.

[14]  Leonid M. Fridman,et al.  High-Order Block Sliding-Mode Controller for a Synchronous Generator With an Exciter System , 2011, IEEE Transactions on Industrial Electronics.

[15]  Youyi Wang,et al.  Global Transient Stability and Voltage Regulation for Power Systems , 2001 .

[16]  Xu Zhiqiang,et al.  Nonlinear coordinated control of drum boiler power unit based on feedback linearization , 2005 .

[17]  E. Z. Zhou,et al.  Power oscillation flow study of electric power systems , 1995 .

[18]  Vadim I. Utkin,et al.  Discontinuous controller for power systems: sliding-mode block control approach , 2004, IEEE Transactions on Industrial Electronics.

[19]  A. Isidori.  Nonlinear Control Systems , 1985 .

[20]  Lihua Xie,et al.  Robust nonlinear controller design for transient stability enhancement of power systems , 1992, [1992] Proceedings of the 31st IEEE Conference on Decision and Control.

[21]  Leonard L. Grigsby,et al.  Power system stability and control , 2007 .

[22]  Xinghuo Yu,et al.  New Coordinated Control Design for Thermal-Power-Generation Units , 2010, IEEE Transactions on Industrial Electronics.

[23]  Mihai Iacob,et al.  Boiler-turbine simulator with real-time capability for dispatcher training using LabView , 2010, 2010 12th International Conference on Optimization of Electrical and Electronic Equipment.

[24]  E. Cheres,et al.  Drum-type boiler following control configuration , 1994 .

[25]  Jun Zhao,et al.  Extended Backstepping Method for Single-Machine Infinite-Bus Power Systems With SMES , 2013, IEEE Transactions on Control Systems Technology.

[26]  Youyi Wang,et al.  A new nonlinear voltage controller for power systems , 1997 .