Recent content by EhGC

Some of the risks include safety of anyone that might be working on the "dead" 138 kV grid (or distribution lines, if any) if your machine energizes it without their knowledge. And, in the state described in your first post, the load seen by your generator is going to be almost entirely...

And there is a simple relationship: Power is Torque multiplied by Speed. Since speed (grid frequency, the shaft speed of your generator) is constant, then to get more power from that shaft the prime mover (turbine) has to provide more torque. And then the generator does it's torque-to-amps...

From the electric utility operations perspective, generating units can and do affect the "infinite bus" grid frequency. There is a recent, real-life example almost exactly like CSA describes, although in a 6000 <b>MW</b> system (perhaps 6000 GW is a typo?): on 02-jan-2017 22:13 local time in...

Head determines the maximum shaft power a turbine can produce. The power produced when the generator is synchronized is controlled by adjusting the amount of water flowing through the turbine. Power is RPM multiplied by torque and since a synchronous machine runs at constant speed, you get more...

Prasad: remember, current does not "contain" MW. Watts are produced when current flows thru a resistance and all generators, bus work, transformers etc have some unless they are superconducting. So when current flows thru a resistance, watts are produced in the form of heat in an amount...

Hi Daniel, I can talk about AGC (Automatic Generation Control). It is an external system that produces generator MW set points, or MW raise/lower controls depending on the generator. Your unit/station will have some interface (for example, an RTU - Remote Terminal Unit) to the remote...

The sentences Marius quoted from a textbook actually appear in a paper that was submitted in partial requirements of a Master's degree (!) in 2009. The paper is titled "INTEGRATED EQUIPMENT OPERATION AND CENTRAL CONTROL SYSTEM OF POWER PLANTS" by Maunank V Patel and Nilay K Desai at...

Synchronous machines remain in synchronism because the angular frequency of the rotating magnetic field in the stator matches the angular frequency of the magnetic field in the rotor. As many others have said, there will be an angular displacement between the two fields, and this angle does not...

It depends on how precisely you want to control frequency. If the grid loads (and the turbines driving the generators) can tolerate frequency wandering between, say, +/-0.5 Hz of nominal (50 or 60 Hz) then a central dispatcher can manually dispatch generation up/down to keep frequency within...

>> If power grid frequency is increasing or increasing so what will be >> the effect on gas turbine generator or steam turbine generator? >their rpm will equal the frequency? Their governors should respond according to their droop settings to increase output if frequency is decreasing or...

If you are in Canada or the US or anyplace where the grid is "large", flickering lights are almost always the result of local line protection operation (or voltage regulation if you're served by a long distribution feeder). Synchronizing a generator does not produce any effect you would notice...