Recent content by Serena_hm

Question related to Slack bus ( help please ) ! Can we set the MVAR limits of a Slack bus as Zero ( for both MAx. and Min. limits ) during operating load flow program !? and what does the minus sign exactly mean when it's written in the limit , such this one : Qmin. (MVAR) = -42.7...

thanks for your explanation , I meant with load flow study , power flow study in power system

Differences between Newton Raphson & Gauss Seidel Methods !? hello everyone ... can anyone please summarize me the differences between Newton Raphson & Gauss Seidel Methods in load flow study !? I'll be really thankful

hello everybody ! I'm working on a simple MATLAB program & I got stuck with something so I'll appreciate it if anyone can help how can I write an imaginary value in a MATLAB program as input , for example, impedance Z = 100+10i

no worries , I finally got what I'm really looking for R = R'/Zbase...(p.u) x = X'/Zbase...(p.u) B = B'/Ybase...(p.u) where R' : Total series resistance in Ohms X' : Total series inductive reactance in Ohms B' : total series susceptance in Siemens Thanks to you...

well , thanks for your reply all and I really do appreciate your help actually I'm working on Powerworld simulator and in that program I'm supposed to enter the transmission line parameters in per unit system " p.u " for ( R , L , and C ) I'm going to work on practical grid that has...

hello there ! thanks for your reply ...well I'm talking about per unit system where we use Vbase & Sbase in the circuit , I'm afraid that I got a little bit lost ...did you get what I exactly mean !? the program is supposed to calculate the parameters with knowing Vbase , Sbase , length and...

Help please...Transmission line parameters in per unit hello there I'm trying to work on a program that converts electrical quantities of transmission line ( R , L , and C ) into per unit system using Matlab the thing is that I'm finding difficulties with the formulas , how I can obtain...

I've checked the links I found somethings interesting I'm still wondering what might happen if I reversed winding polarities in both Wye and Delta connection , will there be a short circuit !?

hello there ; I have several questions about the 3-phase transformer connections and I will be really grateful if anyone could help ... I've learned that there are several types of 3-phase transformer connections which are in general ; the (Wye-wye) , ( Wye-Delta ) , (Delta-Delta ) , (...

Troubleshooting a problem ...Urgent please ! hello everyone , I'm working on 30-Bus grid with Powerwolrd simulator ( version 15 ) and I'm facing some troubles with the results ...I got some different values from the one I was expecting , such as low voltages on some of the buses , different...

Old jim I'm extremely thankful for your help and attention...I had checked all the links above and I found the SSR topic pretty interesting ...tomorrow I'm going to see my supervisor and I hope that we will reach an agreement ... sincere regards

any other suggestions !?

jim hardy I had already checked the website but I'm not so sure if I got the links you're talking about ! Sincere regards .

first of all thank you very much for paying attention to my post ...I really appreciate it Well , I'm not looking for something in particular to be honest but I have curiosity about renewable energy topics and how can be possible to Integrate it into the power system I had read some articles...