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The picture uploaded before is not that clear. This one is better.http://files.engineering.com/getfile.aspx?folder=92796c71-ef93-44d5-959f-39263fd2eaa7&file=Screen_Shot_2014-10-25_at_6.16.59_am.png

Thanks David. So what should i do? Please have a look at my attached picture. How can i represent the double circuit connection in the bus matrix? I need to form the bus matrix (which requires equivalent impedance between two buses). I assume single line representation of the grid is used to...

Thanks for the replies guys. They helped increase my understanding. Please have a look at this paper - minimization of voltage deviation is one of the objectives. There are many, many other researchers who publish paper with voltage deviation min as core objectives...

In other words, I know people are interested in keeping voltage close to 1pu as it is the rated level and consumer equipments are designed to work at rated levels. But are there any other benefits?

Hi thanks for the reply. Yes i agree with your point. Sorry i should've mentioned there is a third objective - 1) minimizing active losses, 2) minimization of VAR investment (i.e. capacitor banks) and 3) minimizing voltage deviation The cost of making vars can be minimized with obj(2), while...

Thanks David. I'm undertaking a reactive power optimization project - where i have to optimize the capacitor allocation problem. Can i use the positive sequence assumption as i will not consider fault conditions, and only the power flow in max load (steady-state)? If i can assume positive...

Sorry please ignore my reply above. Thanks David for your reply. I wish to know that if 2 transmission lines with the same parameters connect two buses, can i take the equivalent impedance to be half of a line?

Hi all I'm undertaking an optimization of the transmission network with capacitor bank installation. 2 common objectives are - 1) reduce active power loss, 2) reduce voltage deviation from 1pu (i.e. make buses V close to 1pu). I want to know the economic benefits for reducing the voltage...

Hi all I'm undertaking an optimization of the transmission network with capacitor bank installation. 2 common objectives are - 1) reduce active power loss, 2) reduce voltage deviation from 1pu (i.e. make buses V close to 1pu). I want to know the economic benefits for reducing the voltage...

Hi all Please explain the difference between parallel single circuit and double circuit transmission lines? I wish to understand them in terms of impedance calculation. Also, am i right to assume that the equivalent impedance of a double circuit transmission line is half of a single line...