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In the picture, three items are shown: 1) Servers (2 units) 2) PC for HMI 3) PC for Engineering workstation

Do the terms operator workstation, HMI and the touch panel all refer to same thing? Operator workstation --> Just a Monitor? or Monitor + PC? HMI --> Device flush mounted on the front door of the cabinet with some displays for monitoring. Some may be equipped with touch screen for control...

Just wondering if STG Lube Oil Mist Separator need to be powered from Emergency or UPS power source? as collegue said as this is a device that avoids explosions so you want a secure supply. Share you thoughts please!

We are using DEIF IE350 for load sharing/paralleling of the generators. What is the best communication method for load sharing, there is a RJ 45 port and there is a CAN bus.

Sorry, dumb question, even though Touch panel is provided, why mouse and key is provided in some control panels?

Why some auto synchronizers are provided with only ability to adjust the speed and not the voltage? In which case synchronizers with ability to adjust only speed is used? and In which case, synchronizers with ability to adjust both speed and voltage is used?

Is it practically feasible to successfully test, commission, and operate isochronous load sharing lines for load sharing between one steam turbine generator (STG - 1.5MW) and three diesel engine–driven generators (3.5MW), given that the generators are dissimilar? Normally the steam turbine...

In this setup, is it possible to operate all three generators in parallel by configuring DG-1, DG-2, and the STG in Droop mode, while operating DG-3 in Fixed kW mode? The manufacturer claims that DG-3 cannot run in parallel with 11kV generators, citing a mismatch in droop settings: the maximum...

What are the methods for detecting earth faults in rotor windings without using slip rings? This is for diesel generators with a capacity of 3 to 5 MVA. Is it possible to use instruments like Brush Prismic R10 Rotor earth fault monitor for these generators (3 to 5MVA). What are the disadvantages...

I have some questions regarding the CT & VT location in the generator terminal box, 1. Droop CT location before the star point at the neutral side of the generator (or) can be at the line side? 2. Why AVR VT sensing has to be taken from the line side and not from the neutral end? 3. What is the...

We have three diesel generators that operate in parallel with a steam turbine generator (STG) on a tanker, of course there is a Main Engine. The excess steam generated from the heat value of VOC gases during cargo loading operations is utilized to drive the steam turbine generator (STG). Should...

a) Installing Generator speed / load sharing controller in the engine skid. Installing the AVR in the Generator terminal box or in the skid. b) Installing Generator speed / load sharing controller in the dedicated control panel remote from the engine skid. Installing AVR in the dedicated...

1. For diesel generators, at what size capacity is a separate excitation panel or AVR panel required? 2. In parallel operation of diesel generators and steam turbine-driven generators, how is load sharing and reactive power management typically achieved? - Is a master control panel required...

The specification requires "Maintaining a sustained short-circuit current of at least 300% of the rated current for 10 seconds," yet I have only observed up to manufacturers offering it 300% for 5 seconds. This is in reference to a diesel engine generator with capacities from 1.5 MW to 5 MW. Why...

The specification requires an AVR of the solid-state type with PMG. One vendor offers AREP+PMI, while another lists only an auxiliary winding. What prevents them from simply providing a PMG? This is for a diesel engine generator, with capacities ranging from 1.5 MW to 5 MW. Why might PMG not be...

The specification states: "The AVR should have sufficient protection against voltage surges, be free from voltage drift, remain unaffected by temperature changes, and maintain regulation accuracy within a frequency variation of +/- 10% of the rated value." The vendor responded that the...

From the previous discussions in this forum, it is understood that the generator absorbs reactive power from the grid when the grid voltage is higher than generator voltage, and supplies reactive power to the grid when the grid voltage is lower than generator voltage. However, there is confusion...

What is the typical time delay used in an under-frequency load shedding scheme for an Islanded generation, and what criteria are used to determine this time delay? 1. Should the under-frequency load shedding (UFLS) scheme be combined with a rate of change of frequency (df/dt) along with a time...

We have three Gas Turbine Generators (GTGs) of the GE (LM2500+G4) model in parallel, each with a site rating of approximately 27.5MW. Inquiring about the maximum acceptable step load for this type of GTG, I reached out to GE for guidance and yet to get a response. However, I'm seeking additional...

Say, there are 4 machines not connected to grid. The four machines all worked in "isochronous load sharing mode" with the PMS and other controllers. What stops the governor from fighting one another in this mode? It seems all the machines talk to each other as to who will respond to the system...