pres wollenberg

8/13/2019 Pres Wollenberg

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First Course on

Power Systems

What topics should be included? What has changed from electrical

engineering education in the past? What is inspiring new student

interest? How are we addressing the need?

Bruce Wollenberg


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How is electric powerproduced?n Students have not had a

machines coursen Most students have not had a

thermodynamics course

n Most students do not know howelectric power is produced


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What does three phasemean?

n Most introductory circuit analysiscourses do not teach three phase

n Most do not cover AC power

adequatelyn Reactive power? Transformers?


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What is The Grid


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How do we makeconnections at 345kV?

n Whats so special about circuit breakers?n Why also have disconnect switches?

n Why do we raise and lower voltage?


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What can go wrong?

n Fault analysis usingsymmetrical components

n Protection with relays


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Why are students soexcited about renewables?


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Wind Generation

n How do we generate at60 Hz from variablespeed wind?


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What can go wrong withwind generation?


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Will we need moretransmission? You betcha!

Green Power Express


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13.8 kVTransmissionline

Generator

Load

Feeder

Step upTransformern Balanced Coverage of

Topics

u Changing Landscape and

Resources

u Apparatus in Generation

& Delivery of Power

u Analysis and Operation

u Fault Protection

Textbook:

- Presentation Slides

- Solutions Manual

- Online Problems


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Labs are all computerbased


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Test Power SystemBus-1 Bus-3

Bus-2

1mP 1eP

2mP

2eP

Software MATLAB/Simulink PowerWorld

EMTDC/PSCAD


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Lab using Simulink

The above simulation is with D1=0.7 5/ws yn and K1=0.001/ws yn with timeconstants Tg1,Ts1 in seconds

Generator1

Generator2

Rotating Mass

Rotating Mass

Step change in load at t=0

Step change in load at t=0

Tie Line Flow

Govornor Steam Turbine

Regulator

RegulatorGovornor Steam Turbine

ACE1

ACE21

Tg1.s+1

1

Tg1.s+1

1

Ts1.s+1

1

Tg1.s+1

K1

s

1

Ts1.s+1

1

Tg1.s+1K1

s

1

M1.s+D1

1

M1.s+D1

1

s

1

s

-K-

B1 1/R1

1/R1B1

-K-

T12

DL2

DL1


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Lab using PowerWorld


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Lab using EMTP/PSCAD


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Topics Includedn Changing Landscape, Distributed generation (DG)

n Energy Sources, Renewables, Environmental Consequences

n

Synchronous generatorsn AC Transmission Lines and Cables; HVDC Lines

n Power Flow

n Power Electronics based FACTS Controllersn Types of loads; Power Quality

n Voltage Stability

n Transient Stability

n Interconnected Systems

n Short-Circuit Faults, Relays, Circuit Breakers

n Switching Transients, Surge Arresters


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Power Systems Lab free to download:Lab Manual - Experiments

1. Visit to a Local Substation/Generating Plant

2. Familiarization with PSCAD/EMTDC

3. Obtaining Parameters of a 345 kV Transmission

Line and Modeling it in PSCAD/EMTDC

4. Power Flow using MATLAB and PowerWorld

5. Including Transformers in Power Flow using

PowerWorld and Confirmation by MATLAB

6. Including an HVDC Transmission Line for Power

Flow Calculations in PowerWorld and Modeling of

Thyristor Converters in PSCAD/EMTDC

7. Power Quality

8. Synchronous Generators

9. Voltage Regulation

10. Transient Stability using MATLAB

11. AGC using Simulinkand Economic Dispatch

using PowerWorld

12. Transmission Line Short Circuit Faults using

MATLAB and PowerWorld, and Overloading of

Transmission Lines using PowerWorld

13. Switching Over-Voltages and Modeling of Surge

Arresters using PSCAD/EMTDC

CD with 18 Video Clips

1. Installation of PowerWorld and PSCAD-EMTDC

2. Familiarization with using PSCAD-EMTDC

3. Obtaining Parameters of Transmission Line using PSCAD/EMTDC

4. Simulating a Transmission Line in a Power System using PSCAD/EMTDC

5. Power Flow using PowerWorld

6. Power Flow using MATLAB7. Including Off-Nominal Turns-Ratio and Phase-Shifting Transformers in

Power Flow using PowerWorld

8. Including an HVDC Transmission Line for Power Flow in PowerWorld

9. Modeling of Thyristor Converters in PSCAD-EMTDC

10. Power Quality Calculations using PSCAD-EMTDC

11. Modeling of Synchronous Generators using PSCAD-EMTDC

12. Voltage Regulation by Thyristor Controlled Reactors (TCR) using EMTDC

13. Thyristor Controlled Series Capacitors (TCSC) using PSCAD-EMTDC

14. Transient Stability using MATLAB15. AGC using Simulink

16. Transmission Line Short Circuit Faults using PowerWorld

17. Tripping of Transmission Lines due to Overloads using PowerWorld

18. Switching Over-Voltages and Modeling of Surge Arresters using EMTDC

MATLAB/Simulink

PowerWorld

PSC

Softwar

AD-E

e:

MTDC

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