Shunt Capacitor & SVC

[SMB1]

Dear All,

Currently, our engineers writting a specification of installing a Fixed shunt capacitor (FC).
But in future project they may replace the FC by SVC.

Now, What shall they consider in the FC specification to use them as a filter when TCR installed.

thanks and regards

SMB

 

[busbar]

With the foreseeable business climate, I see two widely diverging opinions on the scheme you describe. The static-capacitor vendor may tell you now, “Certainly our products will work perfectly with any future electrical-system modifications you may have.” Later, the SVC vendor will likely say, “You can't expect us to build a new system with those old, unreliable, improperly specified capacitors.”

 

[SMB1]

Thanks busbar

But, what shall be added to the FC specification to meet the SVC specification in the future?

 

[jbartos]

Eng-tips: Reference:
1. L.L. Grigsby The Electric Power Engineering Handbook, CRC Press, IEEE Press, 2001,
Pages 4-170 to 4-174
From Shunt Capacitors to Static VAR Control (SVC)
It is not clear from the original posting, which version of SVC is covered by the future project.
TCR will be applicable to two SVC versions.
2. The capacitors for switched capacitor bank will be affected by switching. Check with the capacitor manufacturer for the standard specification format for switched capacitor bank. Traditional capacitor switching phenomena will apply to those capacitors, i.e. harmonics, impact on the system stability, etc.

 

[busbar]

SMB1, I mean no personal offense, but I cannot answer that question. You are going to have to spend time in study, footwork, phone calls and meetings to define what you want now {and expect to pay for now} and what you’ll want later {and expect to pay for later.}

Until you assign engineering and budgetary numbers to both systems, the question of specifications cannot be answered.

You might approach it this way—define the scope of work as “SVC without controls; to initially be used in unswitched power factor correction” or whatever verbiage that best translates your expectations, budget and time frame.

 

[SidiropoulosM]

You'll need to treat this as one project in two stages, done by the same vendor. The vendor should be able to give you a two stage design, with the view of minimizing the cost of stage 2 modification.