Power Systems Laboratory - 1


Electrical Power System is nervous system of any modern economy. The progress of any nation depends on the safe and stable operation of the system. For safe and stable operation of Power System, it is important to understand the behaviour of the system under various operating condition’s beforehand. This can be understood by doing system simulations for various operating conditions. For doing system simulation one have to build mathematical models or use of simulation software’s. This lab provides an opportunity for the students to build mathematical models of the system components and analysing it with available simulation software’s like MATLAB or MiPower. In these lab students:
Models various types of system components like transmission lines, Generators, transformers, loads etc
Understands state of the system by doing Load flow analysis.
Studies various types of contingencies that arises in power systems like short circuit, voltage collapse, line outage etc
4. Plans how to optimize generation among different generating units etc
This lab is useful for the students for understanding various aspects of power systems operation and control.
Power system simulation software models the behaviour of electrical networks, from low voltage distribution networks (typically 110 and 240 V) to very high voltage grids (up to 800 kV). They are mathematical models based on the electrical laws, offering a user interface specifically developed to represent networks equipment: substations, transformers, overhead lines, underground cables, generators, including renewable energy sources like wind farms and photovoltaic panels, circuit breakers, SVC, etc. Power system simulation models are a class of computer simulation programs that focus on the operation of electrical power systems. These computer programs are used in a wide range of planning and operational situations including:
Long-term generation and transmission expansion planning
Short-term operational simulations
Market analysis (e.g. price forecasting)
These programs typically make use of mathematical optimization techniques such linear programming, quadratic programming, and mixed integer programming.
Key elements of power systems that are modeled include:
Load flow (power flow study)
Short circuit
Transient stability
Optimal dispatch of generating units (unit commitment)
Transmission (optimal power flow)


Course Objectives



To form the admittance matrix with and without mutual coupling using direct inspection method and singular transformation.
To Determine the bus currents, bus power and line flow for a specified system voltage (Bus)Profile
To Form Z-bus without mutual coupling using Z-bus building Algorithm.
To form ABCD parameters, Formation for symmetric π & T configuration. Verification of AD-BC=1
To find power angle diagrams, reluctance power, excitation, emf and regulation for salient and non-salient pole synchronous machines.
To obtain swing curve and to determine critical clearing time and regulation for a single machine connected to infinity bus through a pair of identical transmission lines under 3-phase fault on one of the lines for variation of inertia constant/line parameters /fault location/clearing time/pre-fault electrical output.
To Form the Jacobian for a system not exceeding 4 buses (no PV buses) in polar coordinates
To perform load using Gauss- Seidel method (only p q bus)
To determine fault currents and voltages in a single transmission line system with star-delta transformers at a specified location for LG, LLG.
To find the Load flow analysis using Gauss Siedel method, NR method, Fast decoupled method for both pq and pv buses.
To find the Optimal Generation Scheduling for Thermal power plants.


Course Outcomes



Able to form the admittance matrix with and without mutual coupling using direct inspection method and singular transformation.
Able to determine the bus currents, bus power and line flow for a specified system voltage (Bus)Profile
Able to form Z-bus without mutual coupling using Z-bus building Algorithm.
Able to form ABCD parameters, Formation for symmetric π & T configuration. Verification of AD-BC=1
Able to find power angle diagrams, reluctance power, excitation, emf and regulation for salient and non-salient pole synchronous machines.
Students should be able to apply knowledge of the swing curve and to determine critical clearing time and regulation for a single machine connected to infinity bus through a pair of identical transmission lines under 3-phase fault on one of the lines for variation of inertia constant/line parameters /fault location/clearing time/pre-fault electrical output
Students will able to to Form the Jacobian for a system not exceeding 4 buses (no PV buses) in polar coordinates
Students will be able to perform load using Gauss- Seidel method (only p q bus)
Students will be able to determine fault currents and voltages in a single transmission line system with star-delta transformers at a specified location for LG, LLG.
Able to find the Load flow analysis using Gauss Siedel method, NR method, Fast decoupled method for both pq and pv buses.
Able to find the Optimal Generation Scheduling for Thermal power plants.


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