JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Prerequisite

Electrical Power Systems

Course Objectives:

• To formulate and derive the necessary conditions for economical load scheduling problem.
• To understand various constraints, problem formulation and methods to solve the unit commitment problem.
• To understand the constraints related to hydel power plants, problem formulation and solution techniques for hydro-thermal scheduling problem.
• To understand the necessity, factors governing the frequency control and analyze the uncontrolled and controlled LFC system.
• To understand the basic difference between ELS and OPF problem, formulation of the OPF problem and solution techniques.

Course Outcomes

After completion of the course, students will be able to:

• Solve the economic load scheduling with and without network losses both in classical method and iterative methods.
• Solve the unit commitment problem using priority-list method and forward-dynamic method.
• Solve hydro-thermal scheduling problem for short-term and long-term range.
• Analyze the single area and two area systems for frequency deviation under sudden change in load.
• 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 considered.

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) and its 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.

TEXTBOOKS:

• 1. J.J. Grainger & W.D.Stevenson, “Power system analysis”, McGraw Hill, 2003.
• 2. Allen J. Wood,Bruce F.Wollenberg, Gerald B. Sheblé, “Power Generation Operation and Control” Wiley-Interscience, 2013.

REFERENCES:

• 1. Olle l. Elgerd, “Electric Energy Systems Theory an Introduction”, TMH, 2nd Edition, 1983. M. Tech – I Semester L T P C 3 0 0 3