JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Prerequisite

Electrical Power Systems

Course Objectives

Students will be able to:

• understand economic load scheduling problem and unit commitment problem.
• understand hydro-thermal scheduling problem.
• understand load frequency control (LFC)
• understand the optimal power flow (OPF) problem.

Course Outcomes

the student will be able to

• distinguish between economic load dispatch and unit commitment problem
• solve economic load scheduling (with and without network losses) and unit commitment problem
• solve hydro-thermal scheduling problem
• analyze the single area and two area systems for frequency deviation
• solve the OPF problem using ac and dc load flow methods.

UNIT - I: ECONOMIC LOAD SCHEDULING

Characteristics of Steam Turbine, Variations in steam unit characteristics, Economic dispatch with piecewise linear cost functions, Lambda Iterative method, LP method, Economic dispatch under composite generation production cost function, Base point and Participation factors, Thermal system Dispatching with Network losses.

UNIT - II: UNIT COMMITMENT

Unit Commitment – Definition – Constraints in Unit Commitment–Unit Commitment solution methods – Priority–List Methods – Dynamic Programming Solution.

UNIT - III: HYDRO THERMAL SCHEDULING

Characteristics of Hydroelectric units, Introduction to Hydrothermal coordination, Long-Range and Short-Range Hydro-Scheduling, Hydroelectric plant models, Hydrothermal scheduling with storage limitations, Dynamic programming solution to hydrothermal scheduling.

UNIT - IV: LOAD FREQUENCY CONTROL

Control of generation – models of power system elements – single area and two area block diagrams – generation control with PID controllers – implementation of Automatic Generation control (AGC) – AGC features.

UNIT - V: OPTIMAL POWER FLOW

Introduction to Optimal power flow problem, OPF calculations combining economic dispatch and power flow, OPF using DC power flow, Algorithms for solution of the ACOPF, Optimal Reactive Power Dispatch.

TEXT BOOKS:

• 1. Olle l. Elgerd, “Electric Energy Systems Theory an Introduction”, TMH, 2nd Edition, 1983
• 2. J.J. Grainger &W.D.Stevenson, “Power system analysis ”, McGraw Hill ,2003

REFERENCES:

R19 M. TECH. EPE/EPS

• 1. Allen J. Wood, Bruce F. Wollenberg, Gerald B. Sheblé-Power Generation, Operation and Control-Wiley-Interscience (2013)
• 2. NPTEL Course, Prof. S. N. Singh, Power System Operation and Control, https://www.youtube.com/playlist?list=PL4BFB13CCDB954BCF R19 M. TECH. EPE/EPS M. TECH. I Year I Sem. (EPE/EPS)