Isochronous Load Sharing is usually used in the context of an islanded network, such as a small community where the utility owns and operates the power station and all the generators are in the one location. I'm not aware of such systems being used in interconnected networks.
Effectively each...
Marine the load sharer / synchroniser probably ends up in the switchboard.
If you have the space, load share / synchroniser in a separate control panel, separate to both the switchboard and the set.
AVR is set dependent, also depends on your excitation system. Most sets I've been involved with...
An interesting point. Not sure I'd said anything about stirring tea...
I would have thought that as with most other modern forum platforms, there's an alternative means of referencing (or linking...) posts that would work just as well, same as the option to quote previous posts, something that...
Been quite some time since I was working in NT, but generally for building related services the requirement is to register with Building Practitioners Board. Electrical was not one of the disciplines required to register but structural and mechanical were. I think CPEng was required for...
This is relatively straightforward in certain configurations now, but there's still a few caveats, and it's subject to how big the system and load is.
As an example, SMA has components that are capable of being configured to run in either grid-connect or islanded with solar and batteries, they...
So trip coil supervision is normally used when there's a risk that the coil itself has been disconnected or is otherwise non-functional. It is done as a positive operation check (i.e. confirm that the trip circuit is intact and operational) as opposed to just hoping that the circuit integrity...
waross has a longer winded (better? sorry waross...) explanation but the summary is, if you're the only source on your network, then your load defines the power factor and the required reactive power.
If the required reactive power is within the capability curve of the generator, and the load...
What's the load and arrangement look like?
I've seen VCO used for feeders in islanded systems as 'normal' protection practice using pure overcurrent for feeders doesn't behave so well with tiny machines. That scenario may not apply to what you're doing, particularly if you're connected to a...
That's because they don't really mean the same thing.
One is used for selection of CTs for protection purposes, the other for metering and measurement.
Whilst the function and behaviour of the CT is the same for both purposes, the requirements are different for the two applications, and the...
Something like this might work https://aemc.com/products/power-analyzers/power-pel105
Perhaps if you advise why you're looking at capturing data off the generator as well?
Is it a pilot product that you're doing validation on, or is it an existing piece of equipment with issues?
Some of us...
waross' approach is pretty much de rigueur for sizing generators for starting motor load, if it isn't it probably should be.
One aspect I'll add, as I've seen what I'd consider as surprisingly large sets without an excitation boost or PMG system, is that it needs to be called out when dealing...
To expand on the responses here, there's a couple of options on what is happening, and it depends on the specific configuration.
Run relay is generally a permissive to run, as both waross and Tug have indicated.
Start relay engages the starter motor (generally via a solenoid).
In some cases...
Strictly speaking that doesn't really include the first two options asked about, only the third. I've also dealt with plenty of applications where overcurrent is used and coordinated on a per set basis as far as is practicable given the size of the load and the size of the generator. It's not...
Single Set would generally be overcurrent, overload, undervoltage, overvoltage, underfrequency, separate overspeed as a minimum.
Parallel set would extend to reverse power as an absolute minimum. Sync check depends on the system, if there's any possibility of an operator closing out of sync...
I am aware of use of a 2301A as a load bias device for Caterpillar generators, as I understand it one can't just use a 4-20mA or similar output, but put a 2301A in load share mode and off it goes.
The context I am aware of was parallel isoch in isolated networks (supervising controller varies...
waross, you are correct that they do the same thing, it appears the difference is quadrature droop allows the voltage to droop as the power factor gets further away from unity, cross current does not.
I've managed to locate the document I was using for reference in the difference between the...
At that size there's multiple ways of doing load and var sharing.
Once such way is as waross has stated, Quadrature sharing, another is cross current compensation (which also requires a separate CT), the third way with modern controllers is to let them do the VAr sharing, no CT required but...
They normally have a speed bias output in one form or another (CAN, 4-20mA, 0-5V etc) that will interface with whatever's on the engine, to be able to synchronise, and parallel load share with other similar connected units. There's obviously a minimum threshold for capability and in all my...
Bumpless transfer probably isn't the best term for what I'm referring to. The Deif units (I'm familiar with the older GPC series rather than the newer AGC150) are mostly capable of synchronising, hence the use of bumpless transfer. Fast Open-Transition as you note may cause issues.
EDMS...
