design and implementation of thyristor switched shunt capacitors a ...

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4.2.1.2 Disconnection from the Busbar . . 82 4.2.2 Contactor Switched Shunt Filter . . . . . . . . 85 4.2.2.1 Connection to the Busbar . . . . . 85 4.2.2.2 Disconnection from the Busbar . . 87 4.2.3 Thyristor Switched Plain Capacitor . . . . . . 90 4.2.3.1 Connection to the Busbar . . . . . 90 4.2.3.2 Disconnection from the Busbar . . 94 4.2.4 Thyristor Switched Shunt Filter . . . . . . . . 94 4.2.4.1 Connection to the Busbar . . . . . 95 4.2.4.2 Disconnection from the Busbar . . 102 4.3 Application Prototype . . . . . . . . . . . . . . . . . . . 102 4.3.1 Voltage Waveforms of Thyristor . . . . . . . . 107 4.3.2 Voltage Waveforms of Capacitor . . . . . . . . 109 4.3.3 Current Waveforms of Reactor . . . . . . . . . 113 4.3.4 Harmonic Analysis . . . . . . . . . . . . . . . . 117 4.3.5 Reactive Power Compensation Performance . . 119 4.4 TSC Cabinet Interior Equipment . . . . . . . . . . . . . 121 4.5 Discussion . . . . . . . . . . . . . . . . . . . . . . . . . 123 5 CONCLUSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 124 REFERENCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126 APPENDICES A DERIVATION OF ORDINARY DIFFERENTIAL EQUATION 130 B DISTINCTIVE CURVES OF THE THYRISTOR . . . . . . . . 133 C DETAILS OF THE CONTROL CARD . . . . . . . . . . . . . . 137 D SIMULATION MODEL OF THE TSC ENABLING UNIT . . . 148 E APPLICATION MODEL OF THE TSC CABINET . . . . . . . 151 F REACTIVE POWER COMPENSATION REFERENCE LIST OF SIEMENS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154 x
LIST OF TABLES TABLES Table 1.1 Current harmonic limits imposed by Energy Market Regulatory Authority of Turkey . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Table 1.2 Electrical Construction Equipment found in BLI, [24]. . . . . 8 Table 2.1 Reactive Current Generation in a Design with Binary System 16 Table 3.1 Type of the excavators and their reactive power requirement. . 47 Table 3.2 Reasons for the voltage rise of the TSC capacitors in practical situation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 Table 3.3 Ratio of harmonic current component to the fundamental frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 xi
Page 1 and 2: DESIGN AND IMPLEMENTATION OF THYRIS
Page 3 and 4: I hereby declare that all informati
Page 5 and 6: ÖZ TRİSTÖR ANAHTARLAMALI ŞÖNT
Page 7 and 8: ACKNOWLEDGMENTS I would like to exp
Page 9: 2.3 Switching Performance of TSC .
Page 13 and 14: Figure 2.9 (a) Equivalent circuit r
Page 15 and 16: Figure 4.8 Resultant line-to-line v
Page 17 and 18: Figure 4.38 3 Phase current wavefor
Page 19 and 20: CHAPTER 1 INTRODUCTION 1.1 Power Qu
Page 21 and 22: this disturbance since they do not
Page 23 and 24: driving algorithm and it has to wit
Page 25 and 26: how to improve the transient respon
Page 27 and 28: From the practical view, the less t
Page 29 and 30: CHAPTER 2 PROBLEM DEFINITION AND PR
Page 31 and 32: as switching devices instead of ant
Page 33 and 34: Directly Connected Clients 35 33 30
Page 35 and 36: 2.2.2 Harmonic Filtration A pure si
Page 37 and 38: components dramatically. The follow
Page 39 and 40: 20A 20A 15A 15A Line Current 10A Li
Page 41 and 42: VS RS XS VL Source Load IL Ic Compe
Page 43 and 44: a couple of cycles. However, at lea
Page 45 and 46: i + + VT - T1 T2 V + VC - L C Figur
Page 47 and 48: 2.15 shows that there are some comp
Page 49 and 50: waveform directly follows the sourc
Page 51 and 52: is known as copper loss of the tran
Page 53 and 54: components parallel to the thyristo
Page 55 and 56: Ls Coupling Transformer V TCR TSC L
Page 57 and 58: +1.0 Reactive Power, Q (pu) Inducti
Page 59 and 60: V V max V max = voltage limit I Cma
Page 61 and 62:
power system. Voltage source conver
Page 63 and 64:
timing of switching must be when th
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Table 3.1: Type of the excavators a
Page 67 and 68:
3.3 Selection Criterion of Capacito
Page 69 and 70:
minutes should be given to self-dis
Page 71 and 72:
possible in order to achieve a tran
Page 73 and 74:
advantage. It is not affected by th
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(a) (b) Figure 3.7: PSCAD model of
Page 77 and 78:
this value is at least twice of the
Page 79 and 80:
of the reverse recovery current and
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curve in its datasheet should be ta
Page 83 and 84:
Figure 3.13: The current distributi
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stays in inductive or capacitive re
Page 87 and 88:
”ENB A, ENB B and ENB C” are co
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3.7 Key Points in Design of TSC Cab
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chapter, some basic calculations to
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CHAPTER 4 EXPERIMENTAL RESULTS 4.1
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(a) Contactor Switched Plain Capaci
Page 97 and 98:
ated capacitor current. This inrush
Page 99 and 100:
current. Line-to-line voltage is al
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(a) Three phase current waveform at
Page 103 and 104:
4.2.2 Contactor Switched Shunt Filt
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to high inrush current causes a con
Page 107 and 108:
(a) Voltage Waveform across the cap
Page 109 and 110:
Page 111 and 112:
This transient has also negligible
Page 113 and 114:
(a) Three phase current waveform at
Page 115 and 116:
Figure 4.17: Resultant 3φ Capacito
Page 117 and 118:
Page 119 and 120:
Figure 4.21: Resultant line-to-line
Page 121 and 122:
Figure 4.24: Firing pulses, voltage
Page 123 and 124:
566 uF 2x6.0 MVA TM 34.5 kV 500 / 5
Page 125 and 126:
Experimental results will be presen
Page 127 and 128:
+1.6 +0.66 Thyristor Voltage (kV) -
Page 129 and 130:
+1.5 +1.0 Capacitor Voltage (kV) +0
Page 131 and 132:
+1.5 +1.0 Capacitor Voltage (kV) +0
Page 133 and 134:
increase in current can be approxim
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would be given to the supply voltag
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250 1 cycle transient fft 200 I Pha
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4.4 TSC Cabinet Interior Equipment
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4.5 Discussion In contactor or thyr
Page 143 and 144:
• Delta-connected TSC topology is
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[13] Tabandeh, M., Alavi, M.H., Mar
Page 147 and 148:
[38] Bilgin, H.F., “Design and Im
Page 149 and 150:
Since the roots of this equation ar
Page 151 and 152:
APPENDIX B DISTINCTIVE CURVES OF TH
Page 153 and 154:
135 Figure B.2: Stored charge and r
Page 155 and 156:
APPENDIX C DETAILS OF THE CONTROL C
Page 157 and 158:
139 Figure C.2: P-CAD 2002 Schemati
Page 159 and 160:
Page 161 and 162:
Page 163 and 164:
Page 165 and 166:
147 Figure C.10: P-CAD 2002 Schemat
Page 167 and 168:
149 Figure D.1: General view of the
Page 169 and 170:
APPENDIX E APPLICATION MODEL OF THE
Page 171 and 172:
153 Figure E.2: 3 dimensional plot
Page 173 and 174:
155 Figure F.1: Installed SVC syste
Page 175 and 176:
157 Figure F.3: Installed SVC syste
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