Control.com - Nerds in Control
Select Page: 1
Control.com member...
Member Information and Posts by not_quite_nyquistTitle: power engineer
What will happen when 2 out of 3 poles of a 220 kv circuit breaker of a 330MVA Generator (of a steam power plant) is closed and one open when the generator (via GT) is connected (or synchronized)with 220kv bus?
New Replies:
Santanu Das,
The answer to this is complicated to explain in words. The simple, but not...
Looking for a transfer function for a solenoid valve which regulates the quantity of steam that is provided to a heat exchange coil
New Replies:
Sebastian is right... i should have double checked my logic and math before i submitted that one......
Declan,
The easiest way is to assume that the model just involves a simple time constant....
AC generator voltage,excitation current, voltage drop and power flow
New Replies:
Bruce has a great answer, but try and start with this concept:
Apparent power (we'll label it S)...
Phase sequence identification in transformers
New Replies:
chandru,
the phase sequence of the secondary will change in the same manner as the primary.
...
This question concerns the isochronous load sharing operation of synchronous generators and the relation between their generated powers in this mode.
New Replies:
sam,
I think what your equation is getting at is that the scheme is implemented based on each...
What is normal slip frequency for synchronization.
New Replies:
I think what MWO is asking is (MWO, correct me if i'm wrong): should the Mark VI 100% speed setting...
MWO,
The 700G uses the generator terminal voltage to determine the frequency of the generator,...
How to determine what value of PID output represents 100% of duty cycle of pulse generator?
New Replies:
John Smith,
I'm assuming that you are using a pulse width modulation type control for the fan....
What are the things to be checked before running a DG in parallel with a trafo.
New Replies:
Phil Corso,
No disrespect taken. I agree that proper system design would make load shedding...
Sangeetha,
How much load does the UAT normally supply? The basic theory is that once the UAT...
Phil Corso,
I respectfully disagree. I have designed, installed and commissioned several of...
sangeetha,
This is a classic application for a fast load shedding system. Depending on what...
PMSM Motor modelling from first principles...mechanical properties!
New Replies:
> Q1. What does the damping factor actually depend on physically?
B would be the electrical...
how to calculate the pole position?
New Replies:
CSA,
I like your explanation, but would take issue with one detail.
The peak voltage actually...
Busbar Differential protection for MV switchgear for 2 out of 3 (2/3) Incomer logic
New Replies:
> Case -2
> Incomers-1 ON ,Incomer -2 OFF & Buscopler -ON
> 1) what will happen if...
Power Management System (CHP plant)
New Replies:
Daniel,
I think CSA gave a great explanation of the general features, but I would argue that...
Explanation of Reactive power
New Replies:
Ryan,
The lagging is due to the properties of the inductor. The relationship between the current...
What is "cold air" as it relates to generator capability curves?
using induction motor as grid tied generator
New Replies:
That is interesting. They are relying on the rotor being magnetized from previous operation. It's...
Mark,
Even with capacitors, there would be no source of magnetizing current without the...
Looking for some sources and information about gas turbine governors
New Replies:
The western electric coordinating council (WECC) in the United States has developed at least one...
I'm trying to determine the amount of electricity that can be practically generated from a stream of water on the top of our property.
New Replies:
Is that a 700m drop over 5 miles? Are you diverting the stream or are you piping the water? Could...
info on the blackouts in India
This thread covers the very simplistic case of synchronizing like-alternators, both of which are unloaded.
New Replies:
Phil,
I think some of these statements are a bit misleading, at least for me:
> 2. Their...
synchronization with grid when the turbine is in island mode and isochronous mode is selected?
New Replies:
MIKEVI,
I've developed and installed synchronizers that can synchronize a group of generators on...
What makes a generator coupled to a gas turbine increase load when load raise command is issued to Mark V
Our electrical system becomes unstable when we put generators on load control mode.
New Replies:
>(as opposed to a droop control which is purely proportional)
Minor quibble: I would disagree...
I know this is an old post, but the moderator rejected the new post that I tried to start......
Why Speed of Synchronous Generator decrease with increasing speed?
New Replies:
Two things:
Poles should never slip. If they do, you've got big problems. See GE's "Art and...
Select Page: 1
Your use of this site is subject to the terms and conditions set forth under Legal Notices and the Privacy Policy. Please read those terms and conditions carefully. Subject to the rights expressly reserved to others under Legal Notices, the content of this site and the compilation thereof is © 1999-2013 Nerds in Control, LLC. All rights reserved.
Users of this site are benefiting from open source technologies, including PHP, MySQL and Apache. Be happy.
Fortune
Parts that positively cannot be assembled in improper order will be.
