Integrated gasification humid air turbine (IGHAT) cycle is an advanced power generation system, combining gasification technology and humid air turbine (HAT) cycle. It draws great attention in the energy field considering its high specific power, high efficiency, and low emission. There are only a few HAT cycle plants and IGHAT cycle is still on the theory research stage. Therefore, the study on control strategies of IGHAT cycle has great significance in the future development of this system. A design method of control strategy is proposed for the unknown gas turbine systems. The control strategy design is summarized after IGHAT control strategy and logic is designed based on the dynamic simulation results and the operation experience of gas turbine power station preliminarily. Then, control logic is configured and a virtual control system of IGHAT cycle is established on the Ovation distribution control platform. The model-in-loop control platform is eventually set up based on the interaction between the simulation model and the control system. A case study is implemented on this model-in-loop control platform to demonstrate its feasibility in the practical industry control system. The simulation of the fuel switching control mode and the power control mode is analyzed. The power in IGHAT cycle is increased by 24.12% and 32.47%, respectively, compared to the ones in the simple cycle and the regenerative cycle. And the efficiency of IGHAT cycle is 1.699% higher than that of the regenerative cycle. Low component efficiency caused by off-design performance and low humidity caused by high pressure are the main limits for system performance. The results of case study show the feasibility of the control strategy design method proposed in this paper.

References

References
1.
Chiesa
,
P.
,
Kreutz
,
T.
, and
Lozza
,
A. G.
,
2005
, “
CO2 Sequestration From IGCC Power Plants by Means of Metallic Membranes
,”
ASME J. Eng. Gas Turbines Power
,
129
(
1
), pp.
123
134
.
2.
Na
,
C.
,
Yuan
,
J.
,
Xu
,
Y.
, and
Hu
,
Z.
,
2015
, “
Penetration of Clean Coal Technology and Its Impact on China's Power Industry
,”
Energy Strategy Rev.
,
7
(
1
), pp.
1
8
.
3.
Kim
,
T. S.
,
Song
,
C. H.
,
Ro
,
S. T.
, and
Kauh
,
S. K.
,
2000
, “
Influence of Ambient Condition on Thermodynamic Performance of the Humid Air Turbine Cycle
,”
Energy
,
25
(
4
), pp.
313
324
.
4.
Zhang
,
H. S.
,
Su
,
M.
, and
Weng
,
S. L.
,
2004
, “
The Analysis for Heat Recuperated Gas Turbine Cycles for Power Generation
,”
Therm. Turbine
,
33
(
3
), pp.
137
141
.
5.
Lazzaretto
,
A.
, and
Segato
,
F.
,
2000
, “
Thermodynamic Optimization of the HAT Cycle Plant Structure—Part II: Structure of the Heat Exchanger Network
,”
ASME J. Eng. Gas Turbines Power
,
123
(
1
), pp.
8
16
.
6.
Nyberg
,
B.
, and
Thern
,
M.
,
2012
, “
Thermodynamic Studies of a HAT Cycle and Its Components
,”
Appl. Energy
,
89
(
1
), pp.
315
321
.
7.
Sun
,
B.
,
2012
, “
The Modeling and Experimental Research of the Key Components of Integrated Gasification Humid Air Turbine (IGHAT) Cycle
,”
Ph.D. thesis
, Shanghai Jiao Tong University, Shanghai, China.
8.
Zhao
,
Z.
,
Wang
,
Y.
,
Weng
,
Y.
, and
Xu
,
L.
,
2011
, “
Simulation and Analysis on IGHAT System Based on Air Blown Gasifier
,”
Mod. Electric Power
,
28
(
1
), pp.
58
61
.
9.
Wang
,
Y.
, and
Weng
,
Y.
,
2014
, “
Analysis on Integrated Gasification Humid Air Turbine System With Air Blown Gasifier
,”
ASME
Paper No. GT2014-26770.
10.
Zhao
,
L. F.
,
Zhang
,
S. Z.
, and
Xiao
,
Y. H.
,
2001
, “
Parameters Optimization of Integrated Gasification Humid Air Turbine Cycle
,”
J. Eng. Thermophys.
,
22
(
2
), pp.
141
144
.
11.
Arnold
,
J. F.
,
Langlois
,
N.
, and
Chafouk
,
H.
,
2005
, “
The Evolution Required in Standard Cars for the Use of New EGR-VGT Control Strategies
,”
ASME
Paper No. IMECE2005-82405.
12.
Li
,
Y. H.
,
2007
, “
Research and Debugging on MARK VI Control System of GE Gas Turbine
,” Master's thesis, Zhejiang University, Zhejiang, China.
13.
Barker
,
W.
, and
Cronin
,
M.
,
2007
, “SPEEDTRONIC™ Mark VI Turbine Control System,”
Ge Power Systems Ger
,
Schenectady, NY
, Report No.
GER-4193A
.
14.
Peng
,
Y. H.
,
2008
, “
On the Closed-Loop Control and Protection System of V94.3A Combined Cycle Steam Turbine
,”
Master's thesis
, Shanghai Jiao Tong University, Shanghai, China, pp.
1
76
.
15.
Mao
,
D.
, and
Zhu
,
E. S.
,
2008
, “
Analysis on Control System for Mitsubishi M701F Gas Turbine
,”
J. Hunan Univ. Technol.
,
22
(
6
), pp.
76
79
.
16.
Dixon
,
R.
, and
Pike
,
A. W.
,
2006
, “
Alstom Benchmark Challenge II on Gasifier Control
,”
IEE Proc. Control Theory Appl.
,
153
(
3
), pp.
254
261
.
17.
Dixon
,
R.
,
Pike
,
A. W.
, and
Donne
,
M. S.
,
2000
, “
The ALSTOM Benchmark Challenge on Gasifier Control
,”
Proc. Inst. Mech. Eng. Part I
,
214
(
6
), pp.
389
394
.
18.
Zhang
,
F. J.
,
2013
, “
Study on Some Operation Characteristics of Gas Turbine Firing Syngas in IGCC
,”
Gas Turbine Technol.
,
26
(
3
), pp.
13
17
.
19.
Koganezawa
,
T.
,
Katagiri
,
Y.
, and
Miura
,
K.
,
2008
, “
Humid Air Turbine, Humid Air Turbine Control System, and Humid Air Turbine Control Method
,” Hitachi, Ltd., Tokyo, Japan, U.S. Patent No.
EP1972760 A2
.
20.
Kurz
,
R.
, and
Brun
,
K.
,
2017
, “
Process Control for Compression Systems
,”
ASME J. Eng. Gas Turbines Power
,
140
(
2
), p.
022401
.
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