JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Prerequisite

Reliability Engineering

Course Objectives:

• To identify the generation system model and recursive relation for capacitive model building
• To calculate the equivalent transitional rates, cumulative probability and cumulative frequency
• To classify the risk, system and load point reliability indices
• To evaluate the basic reliability indices

Course Outcomes

Upon the completion of the subject, the student will be able to

• Find loss of load and energy indices for generation systems model
• Describe merging generation and load models
• Apply various indices for distribution systems

UNIT - I

Generating System Reliability Analysis – I: Generation system model – capacity outage probability tables – Recursive relation for capacitive model building – sequential addition method – unit removal – Evaluation of loss of load and energy indices – Examples.

UNIT - II

Generating System Reliability Analysis – II: Frequency and Duration methods – Evaluation of equivalent transitional rates of identical and non-identical units – Evaluation of cumulative probability and cumulative frequency of non-identical generating units – 2- level daily load representation - merging generation and load models – Examples.

UNIT - III

Operating Reserve Evaluation: Basic concepts - risk indices – PJM methods – security function approach – rapid start and hot reserve units – Modelling using STPM approach. Bulk Power System Reliability Evaluation: Basic configuration – conditional probability approach – system and load point reliability indices – weather effects on transmission lines – Weighted average rate and Markov model – Common mode failures.

UNIT - IV

Inter Connected System Reliability Analysis: Probability array method – Two inter connected systems with independent loads – effects of limited and unlimited tie capacity - imperfect tie – Two connected Systems with correlated loads – Expression for cumulative probability and cumulative frequency. Distribution System Reliability Analysis – I (Radial configuration): Basic Techniques – Radial networks –Evaluation of Basic reliability indices, performance indices – load point and system reliability indices – customer oriented, loss and energy oriented indices – Examples.

UNIT - V

Distribution System Reliability Analysis - II (Parallel Configuration): Basic techniques – inclusion of bus bar failures, scheduled maintenance – temporary and transient failures – weather effects – common mode failures –Evaluation of various indices – Examples

Substations and Switching Stations: Effects of short-circuits - breaker operation – Open and Short- circuit failures – Active and Passive failures – switching after faults – circuit breaker model – preventive maintenance – exponential maintenance times.

TEXT BOOKS:

• 1. Reliability Evaluation of Power systems by R. Billinton, R. N. Allan, BS Publications, 2007.
• 2. Reliability Modeling in Electric Power Systems by J. Endrenyi, John Wiley and Sons, 1978

REFERENCES:

• 1. Reliability Engineering: Theory and Practice by Alessandro Birolini, Springer Publications.
• 2. An Introduction to Reliability and Maintainability Engineering by Charles Ebeling, TMH Publications.
• 3. Reliability Engineering by E. Balaguruswamy, TMH Publications.
• 4. Reliability Engineering by Elsayed A. Elsayed, Prentice Hall Publications. M. TECH – I YEAR – II SEM. (EPE/EPS/ PSC&A)