Welcome to Control.com, the global online community of automation professionals.
Control.com - Nerds in Control
Member Login
Search
Jump to a Date
Sponsored Communities
Cool stuff
Twitter Feed
Neat Stuff
Visit our shop for nerds in control lifestyle products.
Thermal Overload
The threads that wouldn't die...
- PC reliability?
- Windows, real time
- PID loops
- PCs vs. PLCs
- Replacing people
- MS 'monopoly'?
- Software quality
- Where do we go from here?
- Why pay?
- PC reliability?
- Windows, real time
- PID loops
- PCs vs. PLCs
- Replacing people
- MS 'monopoly'?
- Software quality
- Where do we go from here?
- Why pay?
Fortune
Where there's a will, there's an Inheritance Tax.
RSS Feed
Use this link to get an RSS feed of the Control.com article flow, for private, non-commercial use only:www.control.com/rss/
To get a personalized feed, become a member at no cost.
A computer virus caused serious problems recently for an Australian electric utility.
New Replies:
By M Griffin on 14 October, 2009 - 7:17 pm -
In reply to Matt Warshawsky: It's just as well that you added those remarks in your second reply,...
By Matt Warshawsky on 14 October, 2009 - 12:35 pm -
I guess I should add:
A firewall is actually just a piece of software running on an embedded...
By Matt Warshawsky on 14 October, 2009 - 12:14 pm -
In response to the various posts:
A firewall with no open ports (i.e. doesn't let any traffic...
By DaveMH on 14 October, 2009 - 8:21 am -
Michael
I don't think it is entirely fair to say that all vendors wash their hands and say it is...
By M Griffin on 13 October, 2009 - 9:35 pm -
In response to various posts: I was aware of the Sydney Morning Herald report, but that was one of...
By M Griffin on 13 October, 2009 - 8:45 pm -
In reply to Dilip: Standard routers and firewalls can help somewhat with older types of worms, or...
Hello Michael,
Thank you for posting this as I am trying to keep some kind of log on incidents...
And here
...
Could it be this?
"A virus outbreak is wreaking havoc with Integral Energy's computer...
We are also a 24x7 manufacturing unit having three standalone SCADA running on Windows platform. I...
By Andrey Romanenko on 13 October, 2009 - 8:30 am -
Hello,
I agree with Michael's ideas on the replacement of the bridge with a more robust OS and...
By M Griffin on 13 October, 2009 - 3:06 am -
In reply to RK Sastry: I can imagine a number of ways to improve your system. However the fact that...
I am also interested in knowing the details about this case. In our installation, the SCADA/PLC...
Could someone explain whether variable speed with a single-shaft gas turbine is permitted while the generator is producing power?
fuel change over problem
New Replies:
Low GT fuel pressure tripping is provided to avoid high pressure fuel pump starvation. Normally...
I have some experience on Naphtha fired units with more or less the same kind of arrangement (HSD...
Abb station does not get "enter" command
Is a large generator (150 mW) harmed by VARs lagging above the mfg's PF limits in the published D-curve? It should stay below -12 mVARs and often runs between -14 and -30 mVARs. As the load increases, VARs come into rated values.
New Replies:
Thanks for your comments, Phil. The I^2*T comment got me thinking about V-curves, relating...
By Phil Corso on 11 October, 2009 - 10:24 am -
Road Surfer... the data you provided indicates that max design kVAr (lagging) is about 136...
difference between min governor and max. governor in the steam turbine
New Replies:
By mike on 11 October, 2009 - 1:58 am -
My "guess" would its just like a clamp in toolbox. if we go above set point 1 logic bit...
What is the formula for FSRT calculation in MARK IV?
New Replies:
While not as user-friendly as the former 'Search' feature, the present 'Search' feature of...
from the Electrical engineer department...
Medium Voltage Variable Frequency Drive to Control the Speed of Motor
I am electrical engineer by profession and currently I am doing research on medium voltage Variable Frequency drive (also called as VFD, VSD, AC drive, VVVF, etc.)
New Replies:
Better you go for MV drives with Multi cell technology which are now a days comparatively very...
abb 800xA Communication problems
New Replies:
By allan.evans on 8 October, 2009 - 7:46 pm -
We had the same problem, got quoted $NZ many thousands to have it fixed. System was also...
So, I believe we have network communication problems, I think rj45 connectors. So the controller it...
Hi
I'd the same issue having two redundant AC800M controller switched (actualy not fully...
Interested in anyone's experience with Alarm Notification Software
New Replies:
Thanks to all who responded to my post.. the comments were very helpful...
Designing of Deaerator level control loop for super critical power plants.
New Replies:
By Ananda kannan on 6 October, 2009 - 12:32 pm -
Dear Ankur,
Deaerator level settings: -
HHL - Turbine Bleed steam motorised valve close
HL -...
Incoming reactive power change
New Replies:
If MVARs demands is increasing than the permissible VARs limit of the generator, what could be...
Leading power factor for backup generators
New Replies:
By Phil Corso on 5 October, 2009 - 8:37 pm -
Bhagwan, I concur with Jojo's recommendation that you seek the manufacturer's SOAR... also known as...
By jojo on 4 October, 2009 - 9:27 am -
If you are running with a real power load of 1600kW, you can go up to 1200kVAr on your genset. For...
By Bhagwan H Prajapati on 2 October, 2009 - 6:36 am -
Dear Sir
Can we please tell how much reactive power can be loaded on a genset in my condition,...
Why is FSR value different when TNR value is same for 4 units?
New Replies:
Good observation, but what it seems is that the TNR value you have mentioned is quite minimal. ...
Turbine thrust bearing wear.
GT Trip on IGV control trouble
New Replies:
The originator has a problem of IGV control trouble trip with CSGV moving down and under a prefixed...
from the Forum department...
GT giving 7-8 MW higher Load at Base load mode with same IGV opening, i.e. 84DGAWe have 106 MW, GE Frame 9E gas turbine of control system mark-IV. Before 2 months our GT tripped at 60% speed due to IGV trouble
New Replies:
What I understand is that under any given circumstances it is not normal for the actual exhaust...
Dear nanang,
I have forwarded all ur queries to our C&I cell, since i belong to opeartion...
What is the increment/decrement rate of TNR in Speedtronic MARK IV control system
New Replies:
Well that was a great piece of discussion. Some really hard brain storming to clear the facts. It...
How to fix the humming in combustion chamber when Gas turbine is loading or unloading.
New Replies:
By neger on 2 October, 2009 - 7:58 am -
Hi
1. you may check the humming frequency at the problem (in the range 20 - 30 % IGV) because the...
two motor with the specification 'V 230/400 delta/star'
New Replies:
By Bhagwan H Prajapati on 2 October, 2009 - 7:00 am -
Dear nawaz
What u have mentioned is that .37kW means 370Watt means the motor will draw approx .64...
from the instrumentation and control department...
want some guides about power plant instrumentation and controlwant some guides about power plant instrumentation and control
Coal flow where to start?
I need models and data for GE Mark I governor and GE AE100 exciter for NERC compliance. Need either IEEE or PTI block diagrams.
I search about the methods of fire fighting on the turbine bearings & the brushes collector for tandem compound turbine GE
What would be required to connect to the Mark V network using the network switch provided for the Viewers and DCS.
New Replies:
The Ethernet-based LANs on a VLAN (Virtual LAN) switch:
PDH - Plant Data Highway
HMI and DCS...
"Rotoguard" earth fault telemetry unit
New Replies:
Dear Kosta:
If needed I can send you the rotoguard manual. Unfortunately it is in Spanish....
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 © 1999-2009 Nerds in Control, LLC. All rights reserved.
Our Advertisers
Help keep our servers running...
Patronize our advertisers!
Patronize our advertisers!