Chapter 6

Single line diagrams and SIMULINK theoretical accounts of the two trial systems are given in chapter-2. Fig. 2.7 and 2.8 for 3-Machine 9-Bus WSCC power system and Fig. 2.9 and 2.10 for 6-Machine 30-Bus IEEE trial power system of the two trial systems.

3-Machine 9-Bus WSCC power system with simple machines

Presence of SVC in 3-Machine 9-Bus WSCC power

System

The SVC is placed at the bus-5 in 3-Machine 9-Bus WSCC power system as determined in the capter-2. The dynamic public presentation of SVC with a measure fluctuation of Vref = [ 1 0.9 1.1 1 ] at clip T = [ 0 5 10 15 ] is shown in Fig.6.1.

For transeunt stableness analysis see a perturbation is 3-Ph short circuit mistake at coach -7 at clip T = 1sec and cleared at T = 1.1sec.

Fig.6.1 ( a ) Voltage response

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Fig.6.1 ( B ) Susceptance response

Fig.6.1 SVC dynamic response at coach – 5 in 3-Machine 9-Bus WSCC power system

Rotor angle oscillations

The Fig. 6.2 and 6.3 shows the rotor angle oscillations of generator-2 and generator-3 with regard to generator-1 of 3-Machine 9-Bus WSCC power system for 3 – Phase short circuit mistake at coach – 7. The mistake exists for the continuance of 0.1 sec. These secret plans show the rotor angle oscillations with and without the presence of the SVC in the system. It is obvious from these Figures that SVC with proposed accountant ( SVC equipped with FLCPOD along with PIVC ) is muffling the oscillations well

Fig.6.2. Rotor angle Oscillations of Generator – 2 with regard to

Generator – 1 for 3-Ph Short circuit at coach – 7 in 3-Machine 9-Bus

WSCC power system with the presence of SVC

Fig.6.3. Rotor angle Oscillations of Generator – 3 with regard to

Generator – 1 for 3-Ph Short circuit at coach – 7 in 3-Machine 9-Bus

WSCC power system with the presence of SVC

Power oscillations

The Fig.6.4, Fig. 6.5 and Fig. 6.6 show the power oscillations of generator-1, generator-2 and generator-3 of 3-Machine 9-Bus WSCC power system for 3 – Phase short circuit mistake at coach – 7. It is clear from these Figures that SVC with proposed accountant is muffling the power oscillations efficaciously.

Fig.6.4 Oscillations in Power end product of Generator 1 for 3-Ph Short circuit at Bus – 7 in 3 – Machine 9 – Bus WSCC power system with the presence of SVC

Fig.6.5 Oscillations in Power end product of Generator 2 for 3-Ph Short circuit at Bus – 7 in 3 – Machine 9 – Bus WSCC power system with the presence of SVC

Fig.6.6 Oscillations in Power end product of Generator 3 for 3-Ph Short circuit at Bus – 7 in 3 – Machine 9 – Bus WSCC power system with the presence of SVC

Angular velocities

The Fig.6.7, Fig. 6.8 and Fig. 6.9 show the angular velocities of generator-1, generator-2 and generator-3 of 3-Machine 9-Bus WSCC power system for 3 – Phase short circuit mistake at coach – 7. These secret plans besides compare the velocity ( rad/sec ) fluctuation with and without SVC in the system. Without SVC, it is taking more than 10 seconds to make concluding steady value. Whereas as with SVC in the system oscillations are settling down to concluding steady value in less than 10 sec but ab initio there is big fluctuation in the velocity. SVC with proposed accountant shows better public presentation.

Fig.6.7 Speed Variation of Generator 1 for 3-Ph Short circuit at Bus – 7 in 3 – Machine 9 – Bus WSCC power system with the presence of SVC

Fig.6.8 Speed Variation of Generator 2 for 3-Ph Short circuit at Bus – 7 in 3 – Machine 9 – Bus WSCC power system with the presence of SVC

Fig.6.9 Speed Variation of Generator 1 for 3-Ph Short circuit at Bus – 7 in 3 – Machine 9 – Bus WSCC power system with the presence of SVC

Voltage profile at SVC coach

The Fig.6.10 shows the electromotive force fluctuation at bus-5 at which SVC is connected in 3-Machine 9-Bus WSCC power system for 3 – Phase short circuit mistake at coach – 7. With SVC in the system, electromotive force is settling to concluding steady value in around 8 unsweet otherwise it is taking more than10sec.

Fig.6.10 Voltage at bus – 5 for 3-Ph Short-circuit at Bus – 7 in 3-Machine 9-Bus WSCC Power system with the presence of SVC

Susceptance of SVC

The Fig.6.11 shows the susceptance fluctuation of SVC for 3 – Phase short circuit mistake at coach – 7 in 3-Machine 9-Bus WSCC power system with SVC is located at coach – 5. SVC susceptance is making steady value in around 8 sec, this clip indicates oscillations muffling clip in the system.

Fig.6.11 Susceptance fluctuation of SVC for 3 – Phase short circuit mistake at coach – 7 in 3 – Machine 9 – Bus WSCC power system with SVC is located at coach – 5.

Presence of STATCOM in 3-Machine 9-Bus WSCC power system

The STATCOM is placed at the bus-5 in 3-Machine 9-Bus WSCC power system as determined in the capter-2. The dynamic public presentation of STATCOM with a measure fluctuation of Vref = [ 1 0.9 1.1 1 ] at clip T = [ 0 5 10 15 ] is shown in Fig.6.12.

For transeunt stableness analysis see a perturbation is 3-Ph short circuit mistake at coach -7 at clip T = 1sec and cleared at T = 1.1sec.

Fig.6.12 ( a ) Voltage response

Fig.6.12 ( B ) Reactive current of STATCOM

Fig.6.12 STATCOM dynamic response at coach – 5 in 3-Machine 9-Bus WSCC power system

Rotor angle oscillations

The Fig.6.13 and Fig.6.134 shows the rotor angle oscillations of generator-2 and generator-3 with regard to generator-1 of 3-Machine 9-Bus WSCC power system for 3 – Phase short circuit mistake at coach – 7. The mistake exists for the continuance of 0.1 sec. These secret plans show the rotor angle oscillations with and without the presence of the SVC in the system. It is obvious from these Figures that STATCOM with proposed accountant ( STATCOM equipped with FLCPOD along with PIVC ) is muffling the oscillations well

Fig.6.13 Rotor angle Oscillations of Generator 2 with regard to Generator 1 for 3-Ph Short circuit at coach – 7 in 3-Machine 9-Bus WSCC power system with the presence of STATCOM

Fig.6.14 Rotor angle Oscillations of Generator 3 with regard to Generator 1 for 3-Ph Short circuit at coach – 7 in 3-Machine 9-Bus WSCC power system with the presence of STATCOM

Power oscillations

The Fig.6.15, Fig.6.16 and Fig.6.17 show the power oscillations of generator-1, generator-2 and generator-3 of 3-Machine 9-Bus WSCC power system for 3 – Phase short circuit mistake at coach – 7. It is clear from these Figures that STATCOM with proposed accountant is muffling the power oscillations efficaciously

Fig.6.15 Oscillations in Power end product of Generator 1 for 3-Ph Short circuit at Bus – 7 in 3-Machine 9-Bus WSCC power system with the presence of STATCOM

Fig.6.16 Oscillations in Power end product of Generator 2 for 3-Ph Short circuit at Bus – 7 in 3-Machine 9-Bus WSCC power system with the presence of STATCOM

Fig.6.17 Oscillations in Power end product of Generator 3 for 3-Ph Short circuit at Bus – 7 in 3-Machine 9-Bus WSCC power system with the presence of STATCOM

Angular velocities

The Fig.6.18, Fig.6.19 and Fig.6.20 show the angular velocities of generator-1, generator-2 and generator-3 of 3-Machine 9-Bus WSCC power system for 3 – Phase short circuit mistake at coach – 7. These secret plans besides compare the velocity ( rad/sec ) fluctuation with and without STATCOM in the system. Without STATCOM, it is taking more than 10 seconds to make concluding steady value. Whereas as with STATCOM in the system oscillations are settling down to concluding steady value in less than 10 sec but ab initio there is big fluctuation in the velocity. STATCOM with proposed accountant shows better public presentation.

Fig.6.18 Speed Variation of Generator 1 for 3-Ph Short circuit at Bus – 7 in 3-Machine 9-Bus WSCC power system with the presence of STATCOM

Fig.6.19 Speed Variation of Generator 2 for 3-Ph Short circuit at Bus – 7 in 3- Machine 9-Bus WSCC power system with the presence of STATCOM

Fig.6.20 Speed Variation of Generator 3 for 3-Ph Short circuit at Bus – 7 in 3- Machine 9-Bus WSCC power system with the presence of STATCOM

Voltage profile at STATCOM coach

The Fig.6.21 shows the electromotive force fluctuation at bus-5 at which STATCOM is connected in 3-Machine 9-Bus WSCC power system for 3 – Phase short circuit mistake at coach – 7. With STATCOM in the system, electromotive force is settling to concluding steady value in around 8 unsweet otherwise it is taking more than10sec.

Fig.6.21 Voltage at bus – 5 for 3-Ph Short-circuit at Bus – 7 in 3-Machine 9-Bus WSCC Power system with the presence of STATCOM

Reactive current of STATCOM

The Fig.6.22 shows the reactive current fluctuation of STATCOM for 3 – Phase short circuit mistake at coach – 7 in 3-Machine 9-Bus WSCC power system with STATCOM is located at coach – 5. STATCOM reactive current is making steady value in around 8 sec ; this clip indicates oscillations muffling clip in the system.

Fig.6.22 Reactive current fluctuation of STATCOM for 3 – Phase short circuit mistake at coach – 7 in 3-Machine 9-Bus WSCC power system with STATCOM is located at coach – 5.

Presence of TCSC 3-Machine 9-Bus WSCC power system

The TCSC is placed in transmittal line 7 -5 in 3-Machine 9-Bus WSCC power system as determined in the capter-2 by Extended Phasor Voltage Analysis is simulated. The dynamic public presentation of TCSC with a measure fluctuation of Pref = [ 100 110 100 ] at clip T = [ 5 15 25 ] is shown in Fig.6. 32. Up to t = 5sec TCSC is bypassed so existent power flow in the line i.e. , 84.19MW.

For transeunt stableness analysis see a perturbation is 3-Ph short circuit mistake at coach -7 at clip T = 1sec and cleared at T = 1.1sec.and TCSC is bypassed up to t = 0.5sec.

Fig.6.23 ( a ) Power flow in line 7 -5

Fig.6.23 ( B ) Xtcsc of TCSC

Fig.6.23 TCSC dynamic response in line 7 -5 in 3-Machine 9-Bus WSCC power system

Rotor angle oscillations

The Fig.6.24 and Fig.6.25 shows the rotor angle oscillations of generator-2 and generator-3 with regard to generator-1 of 3-Machine 9-Bus WSCC power system for 3 – Phase short circuit mistake at coach – 7. The mistake exists for the continuance of 0.1 sec. These secret plans show the rotor angle oscillations with and without the presence of the TCSC in the system. It is obvious from these Figures that TCSC with proposed accountant ( TCSC equipped with FLCPOD along with PIPFC ) is muffling the oscillations well

Fig.6.24 Rotor angle Oscillations of Generator 2 with regard to Generator 1 for 3-Ph Short circuit at coach – 7 in 3-Machine 9-Bus WSCC power system with the presence of TCSC

Fig.6.25 Rotor angle Oscillations of Generator 3 with regard to Generator 1 for 3-Ph Short circuit at coach – 7 in 3-Machine 9-Bus WSCC power system with the presence of TCSC

Power oscillations

The Fig.6.26, Fig.6.27, Fig.6.28 and Fig.6.29 show the power oscillations of generator-1, generator-2, generator-3 and power fluctuation through transmittal line 7-5 of 3-Machine 9-Bus WSCC power system for 3 – Phase short circuit mistake at coach – 7.

From these Figures, Without TCSC the power oscillations take more than 10sec to settling down. TCSC with proposed accountant in the system power oscillations are settling down to concluding steady value in less than 5 sec. TCSC with proposed accountant is muffling the power oscillations efficaciously.

Fig.6.26 Oscillations in Power end product of Generator 1 for 3-Ph Short circuit at Bus – 7 in 3-Machine 9-Bus WSCC power system with the presence of TCSC

Fig.6.27 Oscillations in Power end product of Generator 2 for 3-Ph Short circuit at Bus – 7 in 3-Machine 9-Bus WSCC power system with the presence of TCSC

Fig.6.28 Oscillations in Power end product of Generator 3 for 3-Ph Short circuit at Bus – 7 in 3-Machine 9-Bus WSCC power system with the presence of TCSC

Fig.6.29 Oscillations in Power through the line 7 – 5 for 3-Ph Short circuit at Bus – 7 in 3-Machine 9-Bus WSCC power system with the presence of TCSC

Angular velocities

The Fig.6.30, Fig.6.31 and Fig.6.32 show the angular velocities of generator-1, generator-2 and generator-3 of 3-Machine 9-Bus WSCC power system for 3 – Phase short circuit mistake at coach – 7. These secret plans besides compare the velocity ( rad/sec ) fluctuation with and without TCSC in the system. Without TCSC, it is taking more than 10 seconds to make concluding steady value. Whereas as with TCSC in the system oscillations are settling down to concluding steady value in less than 5 sec. TCSC with proposed accountant shows better public presentation.

Fig.6.30 Speed Variation of Generator 1 for 3-Ph Short circuit at Bus – 7 in 3-Machine 9-Bus WSCC power system with the presence of TCSC

Fig.6.31 Speed Variation of Generator 2 for 3-Ph Short circuit at Bus – 7 in 3- Machine 9-Bus WSCC power system with the presence of TCSC

Fig.6.32 Speed Variation of Generator 3 for 3-Ph Short circuit at Bus – 7 in 3- Machine 9-Bus WSCC power system with the presence of TCSC

Voltage profile at input and end product terminuss of TCSC

The Fig.6.33 and Fig.6.34 shows the electromotive force fluctuation at input and end product terminuss of TCSC which is connected in the line 7 -5 of 3-Machine 9-Bus WSCC power system for 3 – Phase short circuit mistake at coach – 7. With TCSC in the system, electromotive force is settling to concluding steady value in around 5 unsweet otherwise it is taking more than10sec.

Fig.6.33 Voltage at input terminuss of TCSC for 3-Ph Short-circuit at Bus – 7 in 3-Machine 9-Bus WSCC power system with the presence of TCSC in the line 7 -5.

Fig.6.34 Voltage at bus – 5 for 3-Ph Short-circuit at Bus – 7 in 3-Machine 9-Bus WSCC Power system with the presence of TCSC in the line 7 -5.

XTCSC of TCSC

The Fig.6.35 shows the reactance of TCSC for 3 – Phase short circuit mistake at coach – 7 in 3-Machine 9-Bus WSCC power system with TCSC is placed in the line 7 -5. TCSC reactance is making steady value in around 5 sec with proposed accountant ; it is around 8sec with PIPFC merely. This indicates the proposed accountant shows better public presentation.

Fig.6.35 Reactance of TCSC for 3 – Phase short circuit mistake at coach – 7 in 3-Machine 9-Bus WSCC power system with TCSC is placed in the line7 – 5.

Presence of SSSC in 3-Machine 9-Bus WSCC power system

The SSSC is placed in transmittal line 7 -5 in 3-Machine 9-Bus WSCC power system as determined in the capter-2 by Extended Phasor Voltage Analysis is simulated. The dynamic public presentation of SSSC with a measure fluctuation of Pref = [ 0.5 1 0.5 ] plutonium at clip T = [ 5 15 25 ] is shown in Fig.6.36. Up to t = 5sec SSSC is bypassed so existent power flow in the line i.e. , 0.8419 plutonium.

For transeunt stableness analysis see a perturbation is 3-Ph short circuit mistake at coach -7 at clip T = 1sec and cleared at T = 1.1sec.and TCSC is bypassed up to t = 0.5sec.

Fig.6.36 ( a ) Power flow in line 7 – 5

Fig.6.36 ( B ) Series injected reactive electromotive force of SSSC

Fig.6.36 SSSC dynamic response in line 7 -5 in 3-Machine 9-Bus WSCC power system

Rotor angle oscillations

The Fig.6.37 and Fig.6.38 shows the rotor angle oscillations of generator-2 and generator-3 with regard to generator-1 of 3-Machine 9-Bus WSCC power system for 3 – Phase short circuit mistake at coach – 7. The mistake exists for the continuance of 0.1 sec. These secret plans show the rotor angle oscillations with and without the presence of the SSSC in the system. It is obvious from these Figures that SSSC with proposed accountant ( SSSC equipped with FLCPOD along with PIPFC ) is muffling the oscillations well

Fig.6.37 Rotor angle Oscillations of Generator 2 with regard to Generator 1 for 3-Ph Short circuit at coach – 7 in 3-Machine 9-Bus WSCC power system with the presence of SSSC

Fig.6.38 Rotor angle Oscillations of Generator 3 with regard to Generator 1 for 3-Ph Short circuit at coach – 7 in 3-Machine 9-Bus WSCC power system with the presence of SSSC

Power oscillations

The Fig.6.39, Fig.6.40, Fig.6.41 and Fig.6.42 show the power oscillations of generator-1, generator-2, generator-3 and power fluctuation through transmittal line 7-5 of 3-Machine 9-Bus WSCC power system for 3 – Phase short circuit mistake at coach – 7.

From these Figures, Without SSSC the power oscillations take more than 10sec to settling down. SSSC with proposed accountant in the system power oscillations are settling down to concluding steady value in less than 5 sec. SSSC with proposed accountant is muffling the power oscillations efficaciously.

Fig.6.39 Oscillations in Power end product of Generator 1 for 3-Ph Short circuit at Bus – 7 in 3-Machine 9-Bus WSCC power system with the presence of SSSC

Fig.6.40 Oscillations in Power end product of Generator 2 for 3-Ph Short circuit at Bus – 7 in 3-Machine 9-Bus WSCC power system with the presence of SSSC

Fig.6.41 Oscillations in Power end product of Generator 3 for 3-Ph Short-circuit at Bus – 7 in 3-Machine 9-Bus WSCC power system with the presence of SSSC

Fig.6.42 Oscillations in Power through the line 7 – 5 for 3-Ph Short-circuit at Bus – 7 in 3-Machine 9-Bus WSCC power system with the presence of SSSC

Angular velocities

The Fig.6.43, Fig.6.44 and Fig.6.45 show the angular velocities of generator-1, generator-2 and generator-3 of 3-Machine 9-Bus WSCC power system for 3 – Phase short circuit mistake at coach – 7. These secret plans besides compare the velocity ( rad/sec ) fluctuation with and without SSSC in the system. Without SSSC, it is taking more than 10 seconds to make concluding steady value. Whereas as with SSSC in the system oscillations are settling down to concluding steady value in less than 5 sec. SSSC with proposed accountant shows better public presentation.

Fig.6.43 Speed Variation of Generator 1 for 3-Ph Short circuit at Bus – 7 in 3- Machine 9-Bus WSCC power system with the presence of SSSC

Fig.6.44 Speed Variation of Generator 2 for 3-Ph Short circuit at Bus – 7 in 3- Machine 9-Bus WSCC power system with the presence of SSSC

Fig.6.45 Speed Variation of Generator 2 for 3-Ph Short circuit at Bus – 7 in 3- Machine 9-Bus WSCC power system with the presence of SSSC

Voltage profile at input and end product terminuss of SSSC

The Fig.6.46 and Fig.6.47 shows the electromotive force fluctuation at input and end product terminuss of SSSC which is connected in the line 7 -5 of 3-Machine 9-Bus WSCC power system for 3 – Phase short circuit mistake at coach – 7. With SSSC in the system, electromotive force is settling to concluding steady value in around 5 unsweet otherwise it is taking more than10sec.

Fig.6.46 Voltage at input terminuss of SSSC for 3-Ph Short-circuit at Bus – 7 in 3-Machine 9-Bus WSCC power system with the presence of SSSC in the line 7 -5.

Fig.6.47 Voltage at bus – 5 for 3-Ph Short-circuit at Bus – 7 in 3-Machine 9-Bus WSCC Power system with the presence of SSSC in the line 7 -5.

Series injected voltage Vq of SSSC

The Fig.6.48 shows the series injected electromotive force of SSSC for 3 – Phase short circuit mistake at coach – 7 in 3-Machine 9-Bus WSCC power system with SSSC is placed in the line 7 -5. Series injected electromotive force of SSSC is making steady value in around 7sec with proposed accountant ; it is around 9sec with PIPFC merely. This indicates the proposed accountant shows better public presentation.

.

Fig.6.48 Series injected reactive electromotive force of SSSC for 3 – Phase short circuit mistake at coach – 7 in 3-Machine 9-Bus WSCC power system with TCSC is placed in the line7 – 5.

Presence of UPFC in 3-Machine 9-Bus WSCC power system

The UPFC is placed in transmittal line 7 -5 in 3-Machine 9-Bus WSCC power system as determined in the chapter-2 by Extended Phasor Voltage Analysis is simulated. The dynamic public presentation of UPFC with a measure fluctuation of Pref = [ 1 1.1 1 ] plutonium at clip T = [ 0 15 25 ] at Vref = 1pu is shown in Fig.6.49. Up to t = 1sec UPFC series component is bypassed so existent power flow in the line i.e. , 0.8419 plutonium.

For transeunt stableness analysis see a perturbation is 3-Ph short circuit mistake at coach -7 at clip T = 1sec and cleared at T = 1.1sec.and UPFC series component is bypassed up to t = 0.5sec.

Fig.6.49 ( a ) Power flow in the line 7 -5

Fig.6.49 ( B ) Voltage at Bus – 5

Fig.6.49 UPFC dynamic response in line 7 -5 in 3-Machine 9-Bus WSCC power system

Rotor angle oscillations

The Fig.6.50 and Fig.6.51 shows the rotor angle oscillations of generator-2 and generator-3 with regard to generator-1 of 3-Machine 9-Bus WSCC power system for 3 – Phase short circuit mistake at coach – 7. The mistake exists for the continuance of 0.1 sec. These secret plans show the rotor angle oscillations with and without the presence of the UPFC in the system. It is obvious from these Figures that UPFC with proposed accountant ( UPFC equipped with FLCPOD along with PI accountant ) is muffling the oscillations well

Fig.6.50 Rotor angle Oscillations of Generator 2 with regard to Generator 1 for 3-Ph Short circuit at coach – 7 in 3-Machine 9-Bus WSCC power system with the presence of UPFC

Fig.6.51 Rotor angle Oscillations of Generator 3 with regard to Generator 1 for 3-Ph Short circuit at coach – 7 in 3-Machine 9-Bus WSCC power system with the presence of UPFC

Power oscillations

The Fig.6.52, Fig.6.53, Fig.6.54 and Fig.6.55 show the power oscillations of generator-1, generator-2, generator-3 and power fluctuation through transmittal line 7-5 of 3-Machine 9-Bus WSCC power system for 3 – Phase short circuit mistake at coach – 7.

From these Figures, Without UPFC the power oscillations take more than 10sec to settling down. UPFC with proposed accountant in the system power oscillations are settling down to concluding steady value in less than 7 sec. UPFC with proposed accountant is muffling the power oscillations efficaciously.

Fig.6.52 Oscillations in Power end product of Generator 1 for 3-Ph Short circuit at Bus – 7 in 3-Machine 9-Bus WSCC power system with the presence of UPFC

Fig.6.53 Oscillations in Power end product of Generator 2 for 3-Ph Short circuit at Bus – 7 in 3-Machine 9-Bus WSCC power system with the presence of UPFC

Fig.6.54 Oscillations in Power end product of Generator 3 for 3-Ph Short circuit at Bus – 7 in 3-Machine 9-Bus WSCC power system with the presence of UPFC

Fig.6.55 Oscillations in Power through the line 7 – 5 for 3-Ph Short-circuit at Bus – 7 in 3-Machine 9-Bus WSCC power system with the presence of UPFC

Angular velocities

The Fig.6.56, Fig.6.57 and Fig.6.58 show the angular velocities of generator-1, generator-2 and generator-3 of 3-Machine 9-Bus WSCC power system for 3 – Phase short circuit mistake at coach – 7. These secret plans besides compare the velocity ( rad/sec ) fluctuation with and without UPFC in the system. Without UPFC, it is taking about 9seconds to make concluding steady value. Whereas as with UPFC in the system oscillations are settling down to concluding steady value in around 6 sec. UPFC with proposed accountant shows better public presentation.

Fig.6.56 Speed Variation of Generator 1 for 3-Ph Short circuit at Bus – 7 in 3-Machine 9-Bus WSCC power system with the presence of UPFC

Fig.6.57 Speed Variation of Generator 2 for 3-Ph Short circuit at Bus – 7 in 3-Machine 9-Bus WSCC power system with the presence of UPFC

Fig.6.58 Speed Variation of Generator 3 for 3-Ph Short circuit at Bus – 7 in 3-Machine 9-Bus WSCC power system with the presence of UPFC

Voltage profile at input and end product terminuss of UPFC

The Fig.6.59 and Fig.6.60 shows the electromotive force fluctuation at input and end product terminuss of UPFC which is connected in the line 7 -5 of 3-Machine 9-Bus WSCC power system for 3 – Phase short circuit mistake at coach – 7. With UPFC in the system, electromotive force is settling to concluding steady value in around 5 unsweet otherwise it is taking more than10sec

Fig.6.59 Voltage at input terminuss of UPFC for 3-Ph Short-circuit at Bus – 7 in 3-Machine 9-Bus WSCC power system with the presence of UPFC in the line 7 -5.

Fig.6.60 Voltage at bus – 5 for 3-Ph Short-circuit at Bus – 7 in 3-Machine 9-Bus WSCC power system with the presence of UPFC in the line 7 -5.

Reactive current of shunt convertor

The Fig.6.61 shows the reactive current of shunt convertor of UOFC for 3 – Phase short circuit mistake at coach – 7 in 3-Machine 9-Bus WSCC power system with UPFC is placed in the line 7 -5. Shunt reactive current of UPFC is making steady value in around 5 sec with proposed accountant ; it is around 7sec with PI accountant merely. This indicates the proposed accountant shows better public presentation

Fig.6.61 shunt reactive current of UPFC for 3 – Phase short circuit mistake at coach – 7 in 3-Machine 9-Bus WSCC power system with UPFC is placed in the line7 – 5.

Series injected voltage Vq of Series convertor

The Fig.6.62 shows the reactive current of shunt convertor of UPFC for 3 – Phase short circuit mistake at coach – 7 in 3-Machine 9-Bus WSCC power system with UPFC is placed in the line 7 -5. series injected electromotive force of UPFC is making steady value in around 5 sec with proposed accountant ; it is around 7sec with PI accountant merely. This indicates the proposed accountant shows better public presentation

Fig.6.62 Series injected electromotive force of UPFC for 3 – Phase short circuit mistake at coach – 7 in 3-Machine 9-Bus WSCC power system with UPFC is placed in the line7 – 5.

6-Machine 30-Bus IEEE power system with elaborate machines

See SIMULINK theoretical account of 6-Machine 30-Bus IEEE power system as shown in Fig.2.10 with all FACTS devices as considered in 3 -Machine 9 – Bus WSCC power system. Detect the dynamic public presentation of the devices and rotor angle oscillations during mistake conditions through the simulation of the system.

Presence of SVC in 6-Machine 30-Bus IEEE power

System

The SVC is placed at the bus-7 in 6-Machine 30-Bus IEEE power system as determined in the capter-2. The dynamic public presentation of SVC with a measure fluctuation of Vref = [ 1 1.05 1 0.95 1 ] plutonium at clip T = [ 0 1 2 3 4 ] sec. is shown in Fig.6.63.

For transeunt stableness analysis see a perturbation is 3-Ph short circuit mistake at coach -1 at clip T = 1sec and cleared at T = 1.15sec.

Fig.6.63 SVC dynamic response at coach – 5 in 6-Machine 30-Bus IEEE power system.

Rotor angle oscillations

The rotor angle oscillations of generator-2 with regard to generator-1 of 6-Machine 30-Bus IEEE power system for 3 – Phase short circuit mistake at coach – 1 is shown in Fig.6.64. The mistake exists for the continuance of 0.15 sec. These secret plans show the rotor angle oscillations with and without the presence of the SVC in the system. It is obvious from these Figures that SVC with proposed accountant ( SVC equipped with FLCPOD along with PIVC ) is muffling the oscillations efficaciously.

Fig.6.64. Rotor angle Oscillations of Generator 2 with regard to

Generator 1 for 3-Ph Short circuit at coach – 1 in 6-Machine 30-Bus

IEEE power system with the presence of SVC

Voltage profile at SVC coach

The electromotive force fluctuation at bus-7 at which SVC is connected in 6-Machine 30-Bus IEEE power system for 3 – Phase short circuit mistake at coach – 1 is shown in Fig.6.65. With SVC in the system, electromotive force is settling clip is less when compared with without SVC in the system but big fluctuation in initial place.

Fig.6.65 Voltage at bus – 7 for 3-Ph Short-circuit at Bus – 1 in 6-Machine 30-Bus IEEE Power system with the presence of SVC

Susceptance of SVC

The susceptance fluctuation of SVC for 3 – Phase short circuit mistake at coach – 1 in 6-Machine 30-Bus IEEE power system with SVC is located at coach – 7 is shown in Fig.6.66. SVC susceptance is making steady value in around 3.5sec ; this clip indicates oscillations muffling clip in the system.

Fig.6.66 Susceptance fluctuation of SVC for 3 – Phase short circuit mistake at coach – 1 in 6 – Machine 30 – Bus IEEE power system with SVC is located at coach – 7.

Presence of STATCOM in 6-Machine 30-Bus IEEE power system

The STATCOM is placed at the bus-7 in 6-Machine 30-Bus IEEE power system as determined in the capter-2. The dynamic public presentation of STATCOM with a measure fluctuation of Vref = [ 1 1.05 1 0.95 1 ] plutonium at clip T = [ 0 1 2 3 4 ] sec. is shown in Fig.6.67.

For transeunt stableness analysis see a perturbation is 3-Ph short circuit mistake at coach -1 at clip T = 1sec and cleared at T = 1.15sec.

Fig.6.66 STATCOM dynamic response at coach – 7 in 6-Machine 30-Bus IEEE power system

Rotor angle oscillations

The rotor angle oscillations of generator-2 with regard to generator-1 of 6-Machine 30-Bus IEEE power system for 3 – Phase short circuit mistake at coach – 1 is shown in Fig.6.67. The mistake exists for the continuance of 0.15 sec. These secret plans show the rotor angle oscillations with and without the presence of the STATCOM in the system. It is obvious from these Figures that STATCOM with proposed accountant ( STATCOM equipped with FLCPOD along with PIVC ) is muffling the oscillations efficaciously.

Fig.6.67 Rotor angle Oscillations of Generator 2 with regard to Generator 1 for 3-Ph Short circuit at coach – 1 in 6-Machine 30-Bus IEEE power system with the presence of STATCOM

Voltage profile at STATCOM coach

The electromotive force fluctuation at bus-7 at which SVC is connected in 6-Machine 30-Bus IEEE power system for 3 – Phase short circuit mistake at coach – 1is shown in Fig.6.68. With SVC in the system, electromotive force is settling clip is less when compared with without STATCOM in the system but big fluctuation in initial place

Fig.6.68 Voltage at bus – 7 for 3-Ph Short-circuit at Bus – 1 in 6-Machine 30-Bus IEEE Power system with the presence of STATCOM

Reactive current of STATCOM

The reactive current of STATCOM for 3 – Phase short circuit mistake at coach – 1 in 6-Machine 30-Bus IEEE power system with STATCOM is located at coach – 7is shown in Fig.6.69. Form these secret plans ; it shows that STACOM efficaciously utilized during oscillations with proposed accountant.

Fig.6.69 Reactive current fluctuation of STATCOM for 3 – Phase short circuit mistake at coach 1 in 6-Machine 30-Bus IEEE power system with STATCOM is located at coach – 7.

Presence of TCSC 6-Machine 30-Bus IEEE power system

The TCSC is placed in transmittal line 2 -5 in 6-Machine 30-Bus IEEE power system as determined in the chapter-2 by Extended Phasor Voltage Analysis is simulated. The dynamic public presentation of TCSC with a measure fluctuation of Pref = [ 100 110 115 110 100 ] MW at clip T = [ 0 5 10 15 20 ] sec is shown in Fig.6.70. Up to t = 1sec TCSC is bypassed so existent power flow in the line i.e. , 78.8 MW.

For transeunt stableness analysis see a perturbation is 3-Ph short circuit mistake at coach -1 at clip T = 1sec and cleared at T = 1.15sec.and TCSC is bypassed up to t = 0.5sec.

Fig.6.70 TCSC dynamic response in line 2 -5 in 6-Machine 30-Bus IEEE power system

Rotor angle oscillations

The rotor angle oscillations of generator-2 with regard to generator-1 of 6-Machine 30-Bus IEEE power system for 3 – Phase short circuit mistake at coach – 1is shown in Fig.6.71. The mistake exists for the continuance of 0.15 sec. These secret plans show the rotor angle oscillations with and without the presence of the TCSC in the system. From these figures it is cleared that TCSC with proposed accountant ( TCSC equipped with FLCPOD along with PIPFC ) is muffling the oscillations well

Fig.6.71 Rotor angle Oscillations of Generator 2 with regard to Generator 1 for 3-Ph Short circuit at coach – 1 in 6-Machine 30-Bus WSCC power system with the presence of TCSC

XTCSC of TCSC

The reactance of TCSC for 3 – Phase short circuit mistake at coach – 1 in 6-Machine 30-Bus IEEE power system with TCSC is placed in the line 2 -5 is shown in Fig.6.72. Form these secret plans ; it shows that TCSC efficaciously utilized during oscillations with proposed accountant.

Fig.6.72 Reactance of TCSC for 3 – Phase short circuit mistake at coach – 1 in 6-Machine 30-Bus WSCC power system with TCSC is placed in the line2 – 5.

Presence of SSSC in 6-Machine 30-Bus IEEE power system

The SSSC is placed in transmittal line 2 -5 in 6-Machine 30-Bus IEEE power system as determined in the chapter-2 by Extended Phasor Voltage Analysis is simulated. The dynamic public presentation of TCSC with a measure fluctuation of Pref = [ 0.5 0.75 1 1.15 1 ] MW at clip T = [ 0 5 10 15 20 ] sec is shown in Fig.6.73. Up to t = 0.5sec SSSC is bypassed so existent power flow in the line i.e. , 0.788 plutonium.

For transeunt stableness analysis see a perturbation is 3-Ph short circuit mistake at coach -1 at clip T = 1sec and cleared at T = 1.15sec.and TCSC is bypassed up to t = 0.5sec.

Fig.6.73 SSSC dynamic response in line 2 -5 in 6-Machine 30-Bus IEEE power system

Rotor angle oscillations

The rotor angle oscillations of generator-2 with regard to generator-1 of 6-Machine 30-Bus IEEE power system for 3 – Phase short circuit mistake at coach – 1is shown in Fig.6.74. The mistake exists for the continuance of 0.15 sec. These secret plans show the rotor angle oscillations with and without the presence of the TCSC in the system. From these figures it is cleared that TCSC with proposed accountant ( TCSC equipped with FLCPOD along with PIPFC ) is muffling the oscillations well

Fig.6.74 Rotor angle Oscillations of Generator 2 with regard to Generator 1 for 3-Ph Short circuit at coach – 1 in 6-Machine 30-Bus IEEE power system with the presence of SSSC

Series injected voltage Vq of SSSC

Series injected reactive electromotive force of SSSC for 3 – Phase short circuit mistake at coach – 1 in 6-Machine 30-Bus IEEE power system with SSSC is placed in the line 2 -5 is shown in Fig.6.75. Form these secret plans ; it shows that SSSC efficaciously utilized during oscillations with proposed accountant.

Fig.6.75 Series injected reactive electromotive force of SSSC for 3 – Phase short circuit mistake at coach – 1 in 6-Machine 30-Bus WSCC power system with TCSC is placed in the line 2 – 5.

Presence of UPFC in 6-Machine 30-Bus IEEE power system

The UPFC is placed in transmittal line 2 -5 in 6-Machine 30-Bus IEEE power system as determined in the chapter-2 by Extended Phasor Voltage Analysis is simulated. The dynamic public presentation of UPFC with a measure fluctuation of Pref = [ 1 1.1 1 ] plutonium at clip T = [ 0 15 25 ] sec with Vref = 1pu is shown in Fig.6.76. Up to t = 0.5sec UPFC series component is bypassed so existent power flow in the line i.e. , 0.788 plutonium.

For transeunt stableness analysis see a perturbation is 3-Ph short circuit mistake at coach -1 at clip T = 1sec and cleared at T = 1.15sec.and UPFC series component is bypassed up to t = 0.5sec.

Fig.6.76 ( a ) Power flow in the line 2 – 5

Fig.6.76 ( B ) Voltage at Bus – 5

Fig.6.76 UPFC dynamic response in line 2 -5 in 6-Machine 30-Bus IEEE power system

Rotor angle oscillations

The rotor angle oscillations of generator-2 with regard to generator-1 of 6-Machine 30-Bus IEEE power system for 3 – Phase short circuit mistake at coach – 1 is shown in Fig.77. The mistake exists for the continuance of 0.15 sec. These secret plans show the rotor angle oscillations with and without the presence of the UPFC in the system. It is obvious from these Figures that UPFC with proposed accountant ( UPFC equipped with FLCPOD along with PI accountant ) is muffling the oscillations well

Fig.6.77 Rotor angle Oscillations of Generator 2 with regard to Generator 1 for 3-Ph Short circuit at coach – 1 in 6-Machine 30-Bus IEEE power system with the presence of UPFC

Reactive current of shunt convertor

Reactive current of shunt convertor of UPFC for 3 – Phase short circuit mistake at coach – 1 in 6 – Machine 30 – Bus IEEE power system with UPFC is placed in the line 2 -5 is shown in Fig.6.78. Form these secret plans ; it shows that UPFC shunt component efficaciously utilised during oscillations with proposed accountant.

Fig.6.78 shunt reactive current of UPFC for 3 – Phase short circuit mistake at coach – 1 in 6-Machine 30-Bus IEEE power system with UPFC is placed in the line 2 – 5.

Series injected voltage Vq of Series convertor

Series injected Reactive Voltage of series convertor of UPFC for 3 – Phase short circuit mistake at coach – 1 in 6 – Machine 30 – Bus IEEE power system with UPFC is placed in the line 2 -5 is shown in Fig.6.79. Form these secret plans ; it shows that UPFC series component efficaciously utilised during oscillations with proposed accountant.

Fig.6.79 Series injected electromotive force of UPFC for 3 – Phase short circuit mistake at coach – 1 in 6-Machine 30-Bus IEEE power system with UPFC is placed in the line 2 – 5.

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