Synchronising Emergency Generator 1.8MW 1

[ekuegler]

Hi,

Wondering if anyone can assist me. We have a 1.8MW Emergency generator that we usually carryout 3 weekly load runs on, normal practice is to auto synch with main generation.

My question is we have a power management system controlling the main generators to a pre set base load 95% of there rated capacity, auto controlling all usual active/reactive power parameters.

I have no issues manually synchronising the emergency - the only problem is as it doesn't constitute part of the power management system in manual I can raise/lower governor set point/increase or decrease frequency but will I have to worry about reactive power flow here given generator size 1.8MW? I can control the reactive power by increasing/decreasing the excitation but how will I monitor this with no VAR meter/p.f meter......? Any tips from the experts.....?

Regards

Ekuegler

 

[7anoter4]

It is not "an expert" instruction but a simply advice.
If the Generator will work in a steady state[ammeter is in still position]
and the Generator is provided with MW-meter and an ammeter
S=sqrt(3)*Iactual*Vactual pf=MW/S Q=sqrt(1-pf^2)*S
If you have not a MW-meter, a kwh-meter[electric meter] will do the job.
Let's say k=kwh/one full rotation of the monitor disk
Count n rotations at t sec P=n*k/t pf=P/S and so on.
This is not a perfect method but will be enough.