Post on 22-Nov-2021
transcript
Mariesa CrowPresented by: Keyou Wang
Missouri University of Science & Technology
FACTS/Energy Storage Project
Funded in part by the Energy Storage Systems Program of the U.S. Department Of Energy through Sandia National Laboratories
Integrate BESS with existing STATCOM
STATCOM/BESSData Acquisition System
Original STATCOM
BESS
Background:
Note Similarity of ResponseBetween STATCOM/BESS and
STATCOM/UCAP
STATCOM/BESS STATCOM/UCAP
BESS vs EC (UCAP)
1st Quadrant
FACTS
10 KVA
3332
31 30
35
80
78
74
7966
75
77
7672
8281
8683
84 85
156 157 161162
vv
167165
15815915544
45160
166
163
5 11
6
8
9
1817
43
7
14
12 13
138139
147
15
19
16
112
114
115
118
119
103
107108
110
102
104
109
142
376463
56153 145151
15213649
4847
146154
150149
143
4243
141140
50
57
230 kV345 kV500 kV
36
69
FACTS
FACTS
FACTS
A/D D/A
A/D
D/AA
/D D
/A
Hardware in the loop simulations
Power System Security
Natural faults
Simulation Engine
(multiprocessor)
Manual power flow control
Placement for steady-state performance
Placement for dynamic performance
Long term control (MF & SQP)
agent based long term control
Line overload cascading failure
scenarios
dynamic cascading failure scenarios
Closed-loop long term control
Cascading failure scenarios
Closed loop dynamic control
Closed loop multi-device
Dynamic nonlinear control
Visualization
Unified Power Quality Conditioner with EC
Series DVR Shunt APF
Three PhaseLoad
AC systemLoad busSystem bus
VS VLiS iL
iSh
Series DVR Shunt APF
DC/DC converter
Three PhaseLoad
AC systemLoad busSystem bus
VS VLiS iL
iSh
UPQC
0.35 0.4 0.45 0.5 0.55
0.06
0.08
0.1
(a)
0.35 0.4 0.45 0.5 0.552
4
6
(b)
0.35 0.4 0.45 0.5 0.55-2
0
2
(c)
0.35 0.4 0.45 0.5 0.55-0.5
0
0.5
(d)time (seconds)
source voltage
load voltage
0.35 0.4 0.45 0.5 0.55
0.06
0.08
0.1
(a)
2
4
6
(b)
-2
0
2
-0.5
0
0.5
(d)time (seconds)
source voltage
load voltage
(c)0.35
No EC with EC
Dynamic voltage regulation
Using power electronics and EC to improve residential wind
turbine response
Measured wind turbine power outputSkystream 3.7
DC-DC converterUcap DC
Link
Shunt Inverter
+
-
DC-DC Converter Controller
PWM Shunt Inverter
Controller
AC Load
PCCis
i inv
iL
Lsh Rsh
PsPrefVref Vdc
S1 S2 g1 g2 g3 g4
Power quality conditioner
Vs
Power Quality
Conditioner
is
iinv
iL
LOAD
Wind Turbine
Simplified functional circuit
1+sT
-sTIs Iinv*
ControlDC Link voltage Vdc is measured
Error signal e is calculated from
Vdc and Vref
Is Vdc lies between 205V and
210V?
Is Vdc>Vref?
Error signal is compared with
negative triangular waveform
Error signal is compared with
triangular waveform
S2 gate signals are obtained and S1 is
zero
S1 gate signals are obtained and
S2 is zero
Error signal is passed into dead
band and it becomes zero
Converter doesnot operate in any mode
Converter operates in Buck mode
Converter operates in Boost mode
NO YES
YESNO
UcapDC Link
S1
S2
L1
Q2 D2
D1
Q1
C1
BUCK Mode
BOOSTMode
Vdc<Vref
Vdc>Vref
Vdc
Bi-directional DC/DC converter
Hardware development and validation is continuing for the UPQC and the power quality conditioner
Publications (selected)• K. Wang*, M. L. Crow, B. McMillin, S. Atcitty, “A Novel Real-Time Approach to Unified Power
Flow Controller Validation,” IEEE Transactions on Power Systems (to appear)
• M. Zarghami*, M. L. Crow, S. Jagannathan, S. Atcitty, “A Novel Approach to Inter-Area Oscillation Damping by Unified Power Flow Controllers Utilizing Ultracapacitors,” IEEE Trans. on Power Systems, vol. 25, no. 1, February 2010.
• W. Siever*, D. Tauritz, A. Miller, B. McMillin, M. Crow, and S. Atcitty, “Symbolic Reduction for High-Speed Power System Simulation,” Simulation: Transactions of the Society for Modeling and Simulation International, vol. 84, no. 6, June 2008.
• Y. Cheng, C. Qian, M. L. Crow, S. Pekarek, S. Atcitty, “A Comparison of Diode-Clamped and Cascaded Multilevel Converters for a STATCOM with Energy Storage,” IEEE Transactions on Industrial Electronics, vol. 53, no.5, October 2006.
• L. Zhang, C. Shen, M. L. Crow. S. Atcitty, L. Dong*, S. Pekarek “Performance Indices for the Dynamic Performance of FACTS and FACTS with Energy Storage,” Electric Power System Components and Systems, vol. 33, no. 3, March 2005.
• L. Dong, M. L. Crow, Z. Yang*, S. Atcitty, “A Reconfigurable FACTS System for University Laboratories, IEEE Transactions on Power Systems, vol. 19, no. 1, pp. 120-128, February 2004. (Awarded IEEE PES prize paper)