ECE U682-Power Systems Analysis

Intended for advanced undergraduates and beginning graduate students. Fundamentals include phasors, single-phase and balance three-phase circuits, complex power, and network equations; symmetric components and sequence networks; power transformers, their equivalent circuits, per-unit notation, and the sequence models; transmission line parameter including resistance, inductance, and capacitance for various configurations; steady-state operation of transmission lines including line loadability and reactive compensation techniques; power flow studies including Gauss-Speidel and Neton-Raphson interactive schemes; symmetrical faults including formation of the bus impedance matrix; unsymmetrical faults including line to ground, line to line, and double line-to ground faults.

Textbooks: Glover and Sarma, Power Systems Analysis and Design, 3rd. Edition. Power Systems Analysis and Design Software including Power World Simulator.

Course Objectives:

Upon Completion of this course, a student should:

1.  Understand and appreciated the history of electric power systems, present and future trends and the role of computer in power-system engineering.

2.  Understand and be able to use phasor analysis, concepts of complex power, network equations, matrix operations; be able to analyze balanced three-phase circuits and calculate power in those; be able to appreciate advantages of balanced three-phase systems.

3.  Understand and use symmetrical components; be able to develop sequence networks of impedance loads, series impedance and rotating machines, be able to calculate power in sequence networks; be able to use personal computer program related to symmetrical components.

4.  Understand the principals of an ideal transformer and construct equivalent circuits for practical transformers; understand and use the per-unit system as applied to transformers; understand three-phase transformer connections and appreciate the concept of phase shift; construct per-unit sequence models of three-phase two-winding transformers and auto-transformers.

5.  Understand and appreciate transmission-line design considerations; be able to calculate resistance, conductance, inductance, and capacitance for various configurations including single-phase, three-phase composite conductors, unequal phase spacing, and bundled conductors. Understand magnetic and electric field effects of earth return and parallel-circuit three-phase line configurations; be able to use personal computer program related to line constants.

6.  Understand the principles of steady-state operation of transmission lines and system modeling.

7.  Be able to perform load flow studies using Jacob/and Gauss-Siedel methods, and Newton-Raphson scheme.

8.  Be able to analyze symmetrical faults and un-symmetrical faults (line to ground, line to line, double line to ground).

9.  Be exposed to system protection schemes, controls, and transient operation stability considerations.

Topics Covered:

1.  Instruction: History of electric power systems; present and future trends; role of computers in power-system engineering.

2.  Three-phase circuits: Phase concepts; instantaneous power in AC circuits; complex power; network equations; balance three-phase circuits; advantages of three-phase versus single-phase systems; matrix-operations software program.

3.  Symmetrical components: Definition: sequence networks of impedance loads; sequence networks of series impedances; sequence networks of rotating machines; power in sequence in sequences networks; symmetrical components software program.

4.  Power Transformers: Ideal transformer; equivalent circuits for practical transformers; per-unit systems as applied to transformer; three-phase transformer connections and phase shift; three-phase two winding and three-winding transformers and their per-unit sequence models; autotransformers.

5.  Transmission-line Parameters: Transmission-line design considerations; resistance; conductance; capacitance calculations related to various configurations based on electric-field considerations; stranded conductors, unequal phase spacing, and bundled conductor; effect of earth return; parallel circuit three-phase line-constants software program.

6.  Introduction to steady-state operation of transmission lines and system modeling techniques.

7.  Power flows using Jacob1, Gauss-Sidel and Newton-Raphson Schemes.

8.  Analysis of Symmetrical Fault, and Unsymmetrical Faults (line to ground, line to line, double line to ground).

9.  Development of Bus-Impedance Matrices.

10.  Introduction to Systems Protection, Controls, and Transient Operations/Stability.

Class/Lab Schedule: TU, Friday 3:25 -5:05; Lab TBA 3hourse/week.

Contribution of course to meeting the professional component:

Engineering topic: 4qh

General Engineering Component: See relation to Program Objectives below.

Program Objective / Assessed
1.1 Formulate and solve ECE problem / HE: One or two midterms and one final exam graded by instructor count 70-80% of grade Weekly homeworks graded by TA count 20% to 30% of grade.
1.2 Laboratory and Computing Tools / HR: Power Systems Analysis and Design software used in homework problems and/or projects.
1.3 Design/conduct experiments analyze data. / H: Consider various alternatives in Lab/Homework.
1.4 Design systems components or processes / H: Computing line constant symmetrical-component sequence network calculations using software in homework; Power flow studies; Fault calculations.
1.5 (CE) Design and implement computer programs / HR: Power Systems Analysis software used in homework and projects.
2.1 Understand/apply mathematics
2.1.1 Differential Calculus / HE: Usage in text/homework/exams
2.1.2 Integral Calculus / HE: Usage in text/homework/exams
2.1.3 Complex algebra/analysis / HE: Usage in text/homework/exams
2.1.4 Differential difference equations / HE: Differential equations are utilized in textbook/homework/exams
2.1.5 Linear Algebra / HE: Using to solve network equations with matrix operations in textbook/home/exams
2.1.6 Multivariate Calculus / N/A
2.1.7 Probability/Stochastic Processes / N/A
2.2 Understanding/apply physics
2.2.1 Solid-state physics / N/A
2.2.2 Electricity & Magnetism / HE: Electric and magnetic filed consideration in calculating inductance and capacitance in text/homework/exams.
2.3 (EE) Apply knowledge of programming
(CE) Design and implement computer programs
2.3.1 Flow-charting/program design / N/A
2.3.2 Language syntax/debugging / N/A
2.3.3 Output analysis / N/A
2.4 Connect ECE subfields / CHE: Circuits theory and E.M. filed theory used in class/homework/exam.
2.5 Information sources/literacy / CH: Outside reference and handbook used for various parameters in class/homework.
2.6 Connect between theory and application / CHE: Examples covered in class and used for homework and exams.
2.7 Connect between classroom, work/coop / CHE: Examples from industry and co-op covered in class and used from homework and exams.
3.1 Effective written communication / H: Homework to be neatly written with full explanations
3.2 Effective oral communication / C: Discussion and participation in class, an occasional oral presentations.
3.3 Analyze information/compare alternatives / C: Discussion in class
3.4 Multidisciplinary teams / N/A
3.5 (CE) Document engineering work appropriately / H: Homework to be neatly written with full explanations.
4.1 Professional/ethical issues / CHE: Topic covered towards preparation for the FIE exam in class/homework/exams.
4.2. Lifelong learning / N/A
4.3 Career management / N/A
4.4 (CE) Copyright and privacy standards specific to computer hardware and software / N/A
5.1 Social/cultural context of ECE / N/A
5.2 Historical/contemporary issued of ECE / C: History of electric power systems and present and future trends discussed in class with active student participation.
5.3 Esthetics in Engineering / CHE: Various alternative schemes considered in class/homework/exam
5.4 Esthetics written/oral communication / N/A