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Hi "The turbine is tripped only if AT LEAST 2 of the solenoid valves are de-energized " according to Alstom O&M manual Look at the start/shutdown sequences for this plant for better overview Any time! James

Hey Mutahir, I would advise at least a re-varnishing for this unit... Any time! James

Seems that this alarm was present for a while and you did not cleared it as it shoud be and now you getting back to it... You will have to get your drawings and chase it could be a soleinod valve or other device ..I cannot add more for the moment as ground fault clearing need one to be on site...

Check synchronizing block diagram and see if all parameters are operating correctly Search for this rung

Check L52SX L25P /PXor other signals related to synchro in CSP files as each site got his own specific CSP file i cannot add more for the moment

You have to make sure that synchronizing permissifs are ok for a shot..like Voltage generator vs line matching, frequency line/generator matching... Check the CSP file and also if you have markV studio check that synchro sequences are ok.. There are some signals and window synchro calculations...

Hello All, When the problem started ...any work or other fact have been noted.. Clear DC ground fault require some one to be patient and follow the schematic carefully to at least locate the fault.. Start by searching what have been done any work in any area and chase the cat by read the...

Sorry i DONT HAVE SUCH MANUAL FOR dart PUMP BUT ONLY FOR FUEL DISPENSER pts atg

Hi I got some manuals but files are too big to get attached here so i will share by email.. Look at your email i just sent one now! Cheers James

Hi all! Here is what i found on Xd/X'd...generators caractheristics/parameters..calculations using Matlab simpowersystem.. See attached file ... iT IS ABOUT a case study on machine about 6MW at least and one 800MVA..but it can be a good read for all! Simpowersystems block diagram for...

Have a read on this article it discuss about aging components and effects ... https://www.researchgate.net/post/What-is-cause-of-generator-unbalanced-current

Have a read on that document for reactance calculation/measuring tests methods..it can highlight you!

Hi ALL , @Shagun Tandon here some answers( written in red ) on the questions that you posted ( see your last post18) This is what i can add for the moment, as we still do not know how APMS is operating in KVAR sharing mode ... Also we need KVAR /field excitation values for both generators...

Hi All! No problemo @PhilCorso although it is adressed to me anybody is free to add some notes here to support @Shagun Tandon ... Also i will review the questions and try to reply as best as i can . How is frequency maintained? I mean by 2 engines on droop mode are you sure that both should...

Hi Shagun Tandon, I was asking about if Load sharing scheme used /module in KVAR sharing was correct Did you ever try to compare both Load sharing module behaviour.. Both AVRs should have same caracteristics/settings as you mentionned. You right to ask those questions regarding generator...

Load sharing factors When a generator set is in a paralleled arrangement, the voltage and frequency outputs of the generator sets are forced to exactly the same values when they are connected to the same bus. Consequently, generator set control systems cannot simply monitor bus voltage and speed...

Droop governing and voltage regulation (a.k.a. “reactive droop compensation”) Isochronous kW load sharing Isochronous voltage kVAR load sharing Cross current compensation for kVAR load sharing

Cross current compensation Cross current is a flow of electrical current between generator sets that is caused by dissimilar excitation levels in those sets. Cross current compensation is a www.cumminspower.com ©2010 Cummins Power Generation term describing the operation of paralleled generator...

https://electronics.stackexchange.com/questions/107988/parallel-generators-dont-divide-reactive-kvar-load-equally

Hello All, Is there any kind of Load sharing module installed on this plant.. The reason for the same would be cross current compensation /kvar droop compensation scheme to study .. Maybe onb eof the 2 AVR is not well tuned and send overexcitation on one genset..causing KVAR fluctuations...