1.Static synchronous compensator (STATCOM) for power factor improvement. 2. What are the constraints are followed in Unit commitment?
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1.Static synchronous compensator (STATCOM) for power factor improvement.
2. What are the constraints are followed in Unit commitment?
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- Discuss the concept of load shedding and its role in maintaining power system stability.The figure below shows the one-line diagram of a four- bus power system. The voltages, the scheduled real power and reactive powers, and the reactances of transmission lines are marked at this one line diagram (The voltages and reactances are in PU referred to 100 MW base. The active power P2 in MW is the last three digits (from right) of your registration number (i.e for the student that has a registration number 202112396, P2 =396). [10] Starting from an estimated voltage at bus 2, bus 3, and bus 4 equals V2 (0) = 1.15<0°, V3 = 1.15 < 0°, V4 1.1< 0°. 1- Specify the type of each bus and known & unknown quantities at each bus. 2- Find the elements of the second row of the admittance matrix (i.e. [Y21 Y22 Y23 Y24]). 3- Using Gauss-Siedal fınd the voltage at bus 2 after the first iteration. 4- Using Newton-Raphson, calculate: |- The value of real power (P2), at bus 2 after the first iteration. Il- The second element in the first row of the Jacobian matrix after the first iteration. 2 P2…1. Thyristor-Controlled Series Capacitor (TCSC) for power factor improvement 2. What are the constraints are followed in Unit commitment?
- 2. The transient reactance in a synchronous machine is defined as the ratio of no-load voltage to the short-circuit current during transient period. Sketch its equivalent-circuit representation.What is a load flow analysis, and why is it important in power system engineering?Which of the following cannot be determined with the help of load flow analysis?a) frequency of busbar voltagesb) active and reactive forcesc) phase angle of busbar voltagesd) loss of strengthe) amplitude of busbar voltages
- Discuss motherboard power delivery systems, including voltage regulators and phases. How do they impact system stability and overclocking capabilities?Problem 4: Consider an interconnected 50-Hz power system that contains four turbine-generator units rated 750 MW, 500 MW, 220 MW and 110 MW. The regulating constant of each unit is 0.05 per unit based on its own rating. Each unit is operating on 75% of its own rating when the load is suddenly dropped by 250 MW. We shall choose a common base of 500 MW. Calculate the rise in frequency and drop in the mechanical power output of each unit without Load Frequency Control.Equal area criteria is a method used to calculate: Select one: O a. None of the answers b. Critical clearing angle and time for transient faults O c. Critical clearing voltage angle for transient faults d. Transient stability current limit O e. Steady state stability power limits
- (a) Sketch the equivalent circuit and obtain the general equation for synchronous generatorwhat are the advantage of per unit computation in power system analysis?OR A single phase voltage controller has input voltage of 240V,50HZ and a load R 300. For 12 cycles On and 8 cycle off. Determine ()RMS Output voltage (i). Input Power factor (1). Average and RMS thyristor currents What are different the applications of cycloconverters lal