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Dear friends What is voltage base value in IEEE 14 bus test system and How to access IEEE 14 bus generator data including: winding resistance, reactance, sub-transient reactance,... Regards

How much its active power (P) should be determined?

Dear user In the newton-rafson load flow, network buses divided by 3 group: Main bus, PV buses and PQ buses. I want to write IEEE 14 bus load flow code. How do I consider synchronous condenser bus? The PQ bus? Regars

I need to a criterion to circuit breaker (CB) lifetime equipped pre-insertion resistor with regard switching operations and its catalog. And please put a link of mentioned CB producer.

"trapped charge source (AC3ph with Tsta=5432)" can not accept any phase angle and there are substation impedance in back of main source. Do you have any solution?

Dear FPelec At first, thank you for your reply One of the source is power station source and another is trapped charge source. I would like to employ "trapped charge source (AC3ph with Tsta=5432)" with "TACS-controlled TYPE 13 switch" in switching overvoltage study. Can you help me to use...

therefor, why do you ask for rated voltage and length of transmission line?

Vrated=400 kV Length= 300 km

Dear friends I am faced a ATPDraw Warning as following: %%% Notice. Two or more sinusoidal voltage sources are present on node " therefore .lis file can not show maximum and minimum of output parameters. However, the simulation results are reliable? Regards

Dear friends I calculated transmission line's sequence impedance (positive, negative and zero) by tower and conductor configuration in MATLAB Powergui toolbox. I want to determine the line surge impedance ( Zc=√(L/C) *). I have L0 , L1 , C0 , C1 but I don't know, how to determine L and C by L0...

I maked a mistake in line 8 for comparing N. I think, N can be determined by A, because The amount of copper usually is same, then for example if A2>A1 then N2<N1 (N)us<(N)ind then (A)us>(A)ind

The following formula is key for your question: E=4.44*N*f*A*B E= electro-motive force N= turn of winding f=frequency B=magnetic flux density A=unit of area if f1>f2 and E2>E1 then it must be n1<n2 or A2<A1 therefore US devices are larger(A1>A2)

Thank you Dear QBplanner I know about free and forced component, but my questions is following: 1- how to determine a nominal capacity for the EHV shunt reactor, while the line's load not assigned and my EHV line only recognized through conductor type and tower configuration? 2- how...

Dear friends I have a 400-kV transmission line for a simulation which conductor type and tower configuration specified and compenseted through a end line reactor. how to determine a nominal capacity for the corresponding reactor in order to reduce switching overvoltage surges? The end line is...

i run your model, to access non zero angle, you should determine a initial speed for your stepper motor block.

to employ point of wave switching, you need circuit breaker with switch-synchronous relay. And there is not need pre-insertion resistor.

Dear User I have a application file(.exe extention) for converting .pl4 extention to .mat extention that downloaded from: http://www.dsea.unipi.it/Members/ceraolow/Software/converter/view That file written in borland C++. I need to execute it by MATLAB command, I know I should use...

Dear friends I received the M.S. degree in Electrical Engineering in Transient Power Systems in Iran and would like to get P.H.D. degree in a good Foreign university. Which university do you propose for me with Scholarship?

Is the ATPDraw 2004 old to open a ".acp" extention file?

Do you want to define a appliance with constant power, constant current or constant impedance? and what time can it off or on? please clarify your problem.