For a class of strongly nonlinear reheat-type turbo generator steam valve control problem, a whole-range nonlinear adaptive large disturbance attenuation control scheme is investigated based on the Minimax and adaptive Backstepping method. The effect of unknown external disturbances on the rotor angle and the rotor speed of the generator are considered. The Minimax method is used to reduce effectively the conservativeness of the disturbance treatment, which is brought by the estimation of the upper bound of the disturbance and the inequality scaling. The purpose is to ensure the robustness and insensitivity to effects of large disturbances of the closed-loop system. By considering the effect of the short-circuit ground fault and the mechanical power of disturbances, an application of the single-machine infinite-bus system is researched. Simulation results show that the control scheme can effectively improve the dynamic process of the transient stability of the power system. Compared with the conventional nonlinear controller, the control scheme has more advantages for large disturbances, and the process of controller design is simple and intuitive.

References

References
1.
Lu
,
Q.
, and
Sun
,
Y. Z.
,
1989
, “
Nonlinear Stabilizing Control of Multi-Machine Systems
,”
IEEE Trans. Power Syst.
,
4
(
1
), pp.
236
241
.10.1109/59.32483
2.
Alexander
,
G.
, and
Omar
,
T.
,
2000
, “
Nonlinear Control of U-tube Steam Generators Via H∞ Control
,”
Control Eng. Pract.
,
8
(
8
), pp.
921
936
.10.1016/S0967-0661(00)00020-4
3.
Lu
,
Q.
, and
Sun
,
Y. Z.
,
1993
,
Nonlinear Control of Power System
,
Science Press
, pp.
129
264
.
4.
Bolek
,
W.
,
Sasiadek
,
J.
, and
Wisniewski
,
T.
,
2002
, “
Two-Valve Control of a Large Steam Turbine
,”
Control Eng. Pract.
,
10
(
4
), pp.
365
377
.10.1016/S0967-0661(01)00153-8
5.
Li
,
S. J.
,
Yu
,
Z.
, and
Wang
,
G.
,
2006
, “
Adaptive H-Infinity Control of Synchronous Generators With Steam Valve via Hamiltonian Function Method
,”
Control Theory Appl.
,
4
(
2
), pp.
105
110
.10.1007/s11768-006-5059-6
6.
Ma
,
J.
,
Xi
,
Z. R.
,
Mei
,
S. W.
, and
Lu
,
Q.
,
2002
, “
Nonlinear Stabilizing Controller Design for the Steam-Valuing and Excitation System Based on Hamiltonian Energy Theory
,”
Proc. CSEE
,
22
(
5
), pp.
88
93
.
7.
Lu
,
Q.
,
Mei
,
S. W.
,
Shen
,
T. L.
, and
Hu
,
W.
,
2000
, “
Recursive Design of Nonlinear H Excitation Controller
,”
Sci. China, Ser. E
,
30
(
1
), pp.
70
78
.
8.
Wang
,
B. H.
,
Yang
,
C. W.
, and
Zhang
,
Q.
,
2006
, “
Integrated Nonlinear Adaptive Backstepping Controller for Synchronous Generator
,”
Control Theory Appl.
,
23
(
1
), pp.
60
64
.
9.
Sun
,
L. Y.
, and
Zhao
,
J.
,
2009
, “
Nonlinear Adaptive Control for the Turbine Steam Valve With Input Constraints
,”
Control Theory Appl.
,
6
(
6
), pp.
601
606
.
10.
Li
,
W. L.
,
Jing
,
Y. W.
, and
Wang
,
M. S.
,
2002
, “
Stability Control in Power Systems: A Survey
,”
Control Decision
,
17
(
6
), pp.
1
6
. Available at: http://en.cnki.com.cn/Article_en/CJFDTotal-KZLY200906005.htm
11.
Li
,
W. L.
,
Jing
,
Y. W.
, and
Liu
,
X. P.
,
2003
, “
Adaptive Robust Backstepping Design for Nonlinear Steam Valve Controller
,”
Proc. CSEE
,
23
(
1
), pp.
155
158
.
12.
Wang
,
Y. Y.
, and
David
,
J.
,
1996
, “
Robust Nonlinear Co-ordinated Control of Power Systems
,”
Automatica
,
32
(
4
), pp.
611
618
.10.1016/0005-1098(95)00186-7
13.
Chen
,
S.
,
Malik
,
O. P.
, and
Chen
,
T. W.
,
1997
, “
A Robust Power System Stabilizer Design
,”
Opt. Control Appl. Methods
,
18
(
3
), pp.
179
193
.10.1002/(SICI)1099-1514(199705/06)18:3<179::AID-OCA597>3.0.CO;2-5
14.
Yang
,
J.
,
Chen
,
W. H.
, and
Li
,
S.
,
2010
, “
Nonlinear Disturbance Observer-Based Robust Control for Systems With Mismatched Disturbances/Uncertainties
,”
IET Control Theory Appl.
,
5
(
18
), pp.
2053
2062
.10.1049/iet-cta.2010.0616
15.
Rehman
,
O. U.
,
Fidan
,
B.
, and
Petersen
,
I. R.
,
2009
, “
Robust Minimax Optimal Control of Nonlinear Uncertain Systems Using Feedback Linearization With Application to Hypersonic Flight Vehicles
,”
Proceedings of the 48th IEEE Conference on Decision and Control
, pp.
720
726
.
16.
Jiang
,
N.
, and
Jing
,
Y. W.
,
2008
, “
Non-Fragile Minimax Control of Nonlinear Systems Based on T-S Model
,”
Control Theory Appl.
,
25
(
5
), pp.
925
928
.
17.
Athanasius
,
G. X.
,
Pota
,
H. R.
,
Subramanyam
,
P. B.
, and
Ugrinovskii
,
V.
,
2007
, “
Robust Power System Stabiliser Design Using Minimax Control Approach: Validation Using Real-Time Digital Simulation
,”
Proceedings of the 46th IEEE Conference on Decision and Control
, pp.
2427
2432
.
18.
Jiang
,
N.
,
Liu
,
B.
, and
Jing
,
Y. W.
,
2011
, “
Nonlinear Steam Valve Adaptive Controller Design for the Power Systems
,”
Intell. Control Autom.
,
2
, pp.
31
37
.10.4236/ica.2011.21004
19.
Jiang
,
N.
,
Liu
,
B.
, and
Jing
,
Y. W.
,
2012
, “
The Design of Nonlinear Disturbance Attenuation Controller for TCSC Robust Model of Power System
,”
Nonlinear Dyn.
,
67
(
3
), pp.
1863
1870
.10.1007/s11071-011-0113-4
20.
Ri
,
H. R.
,
Li
,
D. H.
, and
Li
,
L. Q.
,
2000
, “
Reheat-Type Turbo Generator Steam Valve Whole-Range Non-Linear Control
,”
J. Tsinghua Univ. (Sci. Technol.)
,
40
(
10
), pp.
89
92
.
21.
Li
,
W. L.
, and
Liu
,
X. P.
,
2003
, “
Study on the Nonlinear Adaptive Robust Control for Power Systems
,” Ph.D. thesis, Northeastern University, Shenyang, China.
22.
Sun
,
L. Y.
,
Tong
,
S. C.
, and
Liu
,
Y.
,
2011
, “
Adaptive Backstepping Sliding Mode H Control of Static Var Compensator
,”
IEEE Trans. Control Syst. Technol.
,
19
(
5
), pp.
1178
1186
.10.1109/TCST.2010.2066975
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