Karnataka. Department of Electrical & Electronics Engineering. Power System Simulation Lab. Lab Manual. 10EEL B.E – VII Semester. Lab Manual EE Power System Simulation Lab Manual EEE seventh semester. July 23, at AM · CLICK HERE TO VIEW ONLINE CLICK HERE TO. EE – POWER SYSTEM STIMULATION LAB MANUAL . ME COMPUTER AIDED SIMULATION & ANALYSIS LABORATORY.
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Computation of Parameters and Modeling of Transmission Lines 2. Load Flow Analysis – I: Load Flow Analysis – II: Transient and Small Signal Stability Analysis: Single-Machine Infinite Bus System7. Electromagnetic Transients in Power Systems9. Economic Dispatch in Power Systems. Computation of Parameters and Modeling of Transmission Lines. Single-Machine Infinite Bus System.
Electromagnetic Transients in Power Systems. To determine the positive sequence line parameters L and C per phase per kilometer of a single phase, three phase single and double circuit transmission lines for different conductor arrangements. Transmission line has four parameters resistance, inductance, capacitance and conductance.
The inductance and capacitance are due to the effect of magnetic and electric fields around the conductor. The resistance of the conductor is best determined from the manufactures data, the inductances and capacitances can be evaluated using the formula. Type and save the program in the editor window. Execute the program by either pressing Tools Run. The diameter of each conductor is 1.
Radius of conductor is 0. Lines are un transposed. Diameter of each conductor is 2cm. Find inductance per phase and capacitance if the radius of each sub conductor is 1.
The conductors have a diameter of 3. The conductors have a diameter of 2. The new line will also have a flat horizontal configuration, but it is to be operated at a higher voltage and therefore the phase spacing is increased to 14m as measured from the center of the bundles. The spacing between the conductors in the bundle is 45 cm.
Determine the inductance and capacitance per phase per kilometer of the above two lines. To understand modeling and performance of short, medium and long transmission lines.
An overhead 3 phase transmission line delivers KW at 11 KV at 0. The resistance and reactance of each conductor are 1. Determine the line performance. It delivers 40 MW at KV, 0. A 3 phase 50 Hz, KV line is m long. Calculate line performance when load is MW, 0. The following data refers to a 3 phase overhead transmission line.
The voltage is KV. Load delivers is MW at 0. Using rigorous method determine line performance. Thus the line modeling of different types of transmission lines was done. To develop a program to obtain Ybus matrix for the given networks by the lower of inspection. The generator and transformer impedances are taken into account. Ybus is a sparse matrix, Z-Bus is a full matrix, i.
The bus impedance matrix is most useful for short circuit studies. Initialize [Y-Bus] matrix, that is replace all entries by zero. Modify the Ybus matrix by adding the transformer and the generator admittances to the respective diagonal elements of Y- bus matrix. Compute the Z-Bus matrix by inverting the modified Ybus matrix. Compute the Z-bus matrix by inverting modified YbusPrint all the Results1. The [Y-Bus] matrix is formed by inspection method for a four bus system.
The line data and is given below. Sytsem the program for the Ybus formation by the method of inspection was executed and the output is verified with the manual calculationEXP NO: To develop a program to obtain the Z bus matrix for the given network by the method of direct inspection. In short circuit analysis, the generator and transformer impedances must be taken into account.
In contingency analysis, the shunt elements are neglected while forming the Z-Bus matrix, which is used to compute the outage distribution factors. This can be easily obtained by inverting the Ybus formed by inspection method or by analytical method. Taking inverse of the Ybus for large systems is time consuming; Moreover, modification in the system requires syshem whole process to be repeated to reflect the changes in the system.
In such cases, the Z-Bus is computed by Z-Bus building algorithm. Determine Z bus for the given network using direct inspection method. Thus the program for the Z bus formation by the method of inspection was executed and the output is verified with the manual kanual. To develop a program to obtain the Z bus matrix for the given network by the method of bus building algorithm. Read the number of buses, starting bus and ending bus.
Initialize the Sijulation Bus matrix. Form the Z Bus matrix as follows Simulafion 1: Adding impedance from an existing bus to reference bus. Print the Z bus matrix.
Find the bus poaer matrix for the given network. To carryout load flow analysis of the given power system by Gauss Ppwer method. The voltage of slack bus is the specified voltage and it is not modified in any iteration. Assume a suitable value of called convergence criterion. Here is a specified change in bus voltage that is used to compare the actual powed in bus voltage and iteration. Check for slack bus. If it is a slack bus then go to step,otherwise go to next step. Check for generator bus.
If it is a generator bus go to next step, otherwise i. Temporarily set and phase of as manuall iteration value if the bus-p is a generator bus where is the specified magnitude of voltage for bus p. Then calculate the reactive power of the generator bus using the following equation. The calculated reactive power may be within specified limits or it may violate the limits.
If the calculated reactive power is within the specified limits then consider this bus as generator bus and set for this iteration and go to step If the calculated reactive power violates the specified limit for reactive power then treat this bus as a load bus. The magnitude of the reactive power at this bus will correspond to the limit it has violated. For generator bus the magnitude of voltage does not change and so for all iteration the magnitude of bus voltage is the specified value.
The phase of the bus voltage can be as shown below. Now that iteration voltage of the generator bus is given byAfter calculating for generator bus go to step For the load bus the iteration value of load bus p voltage, can be calculated using the following equation.
Power System Simulation Laboratory Manual
An acceleration factor, can be used for faster convergence. If the acceleration factor is specified then modify the iteration value of bus-p voltage using the following equation. Calculate the change in the bus-p voltage, using the relation,Step Repeat the steps 5 to 11 until all the bus voltages have been calculated.
For this increment the bus count by1 and go to step-5,until the bus count is n. Find out the largest of the absolute value of the change in voltage. Check whether this largest change is less than the prescribed tolerance. If is less than then move to the next step. Otherwise increment the iteration count and go to step Calculate the line flows and slack bus power using the bus voltages. The system data for a load flow solution are given below.
Thus load flow analysis by Gauss Seidal method was done for the given power system. To carryout load flow analysis of the given power system by Newton raphson method. The voltage of the slack bus is the specified voltage and it is not modified in any iteration.
Hence is a specified change in the residue that is used to compare the critical residues P and Q or V at the end of each iteration. If it is a slack bus then go to Step 13, otherwise go to next step.