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Thermal Overload
The threads that wouldn't die...
- PC reliability?
- Windows, real time
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- PC reliability?
- Windows, real time
- PID loops
- PCs vs. PLCs
- Replacing people
- MS 'monopoly'?
- Software quality
- Where do we go from here?
- Why pay?
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It is the business of little minds to shrink.
-- Carl Sandburg
-- Carl Sandburg
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from the Electrical department...
Use of reactors and synchronising busWe have a power plant for a refinery. There is no grid connection. The generation and main distribution voltage is 75MW. Use is made of 6 x 25%, 10kV generators. There are issues of short circuit level at the 10kV receiving switchgear.
It is planned to have 4 x 25% generators operating under load and out of the two remaining generators, one will be a spinning reserve and the other one will be idle. The 10kV switchhgear has 4 bus sections with series reactors between them. One generator is connected to each bus section.
Under this configuration:
1. Will there be power flow (active and reactive) between the generators through the series reactor?
2. If there is a fault in one bus section what will be the voltages on the other sections?
It is planned to have 4 x 25% generators operating under load and out of the two remaining generators, one will be a spinning reserve and the other one will be idle. The 10kV switchhgear has 4 bus sections with series reactors between them. One generator is connected to each bus section.
Under this configuration:
1. Will there be power flow (active and reactive) between the generators through the series reactor?
2. If there is a fault in one bus section what will be the voltages on the other sections?
Responding to Bala’s 28-Mar-08 (23:12) queries:
1. Yes!
2. In order to carry out a fault study much more information is required then that provided thus far!
Regards, Phil Corso (cepsicon@aol.com)
1. Yes!
2. In order to carry out a fault study much more information is required then that provided thus far!
Regards, Phil Corso (cepsicon@aol.com)
Bala, the lead to your topic referred to reactors and a synchronizing bus:
1) Were you interested in evaluating various bus-schemes to determine their fault-reduction efficacy?
2) Were you asking about an existing situation, that is, replace a bus-sectionalizing scheme with a synchronizing-bus arrangement to improve voltage regulation?
Regards, Phil Corso
1) Were you interested in evaluating various bus-schemes to determine their fault-reduction efficacy?
2) Were you asking about an existing situation, that is, replace a bus-sectionalizing scheme with a synchronizing-bus arrangement to improve voltage regulation?
Regards, Phil Corso
From Control Engineering magazine...
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