Operators and planners for electric power utilities routinely perform dynamic stability analysis to assess the stability margins of their power systems and take preventive actions in case these margins are insufficient. They also design controllers and protection schemes to enable their power systems to dampen instabilities and withstand disturbances. Therefore, it is essential that the students be exposed to these modeling and design tools. This course will expose them to various models, methodologies and simulation techniques for multi-machine systems and their controllers.
Equal area criterion 6. Direct Lyapunov method for a multi-machine system 6. Synchronisation 6. Asynchronous operation and resynchronisation 6. Transition to asynchronous operation 6. Asynchronous operation 6. Possibility of resynchronisation 6. Impedance loci during power swings 6. Power swings blocking 6. Pole-slip protection of synchronous generator 6. Out-of-step tripping in network 6. Example of a blackout 6. Torsional oscillations in the drive shaft 6.
The torsional natural frequencies of the turbine-generator rotor 6. Effect of system faults 6. Network feasibility 8.
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Stability criteria 8. Critical load demand and voltage collapse 8. Effects of increasing demand 8. Effect of network outages 8. Influence of the shape of the load characteristics 8. Influence of the voltage control 8. Static analysis 8. Voltage stability and load flow 8. Voltage stability indices 8. Dynamic analysis 8. The dynamics of voltage collapse 8.
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Examples of power system blackouts 8. Computer simulation of voltage collapse 8. Prevention of voltage collapse 8. Self-excitation of a generator operating on a capacitive load 8. Parametric resonance in RLC circiut 8. Self-excitation of a generator with open-circuited field winding 8. Self-excitation of a generator with closed field winding 8.
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Practical possibility of self-excitation 9 Frequency stability and control 9. Automatic generation control 9. Generation characteristic 9. Primary control 9. Secondary control 9. Tertiary control 9. AGC as a multi-level control 9. Defence plan against frequency instability 9.
Quality assessment of frequency control 9. Stage I - Rotor swings in the generators 9. Stage II - Frequency drop 9. Stage III - Primary control 9. The importance of the spinning reserve 9. Frequency collapse 9. Under frequency load shedding 9. Islanded systems 9. Interconnected systems and tie-line oscillations 9. FACTS devices in tie-lines 8.
Incremental model of a multimachine system 9. State-variable control based on Lyapunov method 9. Example of simulation results 9. Power system stabilisers PSS applied to the excitation system PSS applied to the turbine governor Fast valving Braking resistors Generator tripping Power-angle characteristic State-variable control Control based on local measurements Mathematical Background. Power System Dynamic Simulation.
Numerical Integration Methods. The Partitioned-Solution. The Simultaneous Solution Methods. Comparison Between the Methods.
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Power System Model Reduction - Equivalents. Types of Equivalents. Network Transformation. Aggregation of Generating Units. Equivalent Model of External Subsystem. Coherency Recognition. Properties of Coherency-Based Equivalents. Average Review. Write a Review. Related Searches. Progressive reductions in vehicle emission requirements have forced the automotive industry to invest in research Progressive reductions in vehicle emission requirements have forced the automotive industry to invest in research and development of alternative control strategies. Continual control action exerted by a dedicated electronic control unit ensures that best performance in terms of pollutant emissions View Product.
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Power system dynamics : stability and control
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