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Ok crshears thank you very much.

Thank you. Do you know any products (from GE, Rockwell, or others) that you could recommend? Thanks for your reply. Actually we don't have digital protective terminals on the MV side. A resolution of 100 ms would be good for us, because we have more than 2000 MV/LV substations in our...

You could call them MV/LV substations (but the name "MV" has been abandoned lately, and replaced by "HV" where HV >= 1kV for AC). In my case MV = 22kV and LV = 400V.

Thank you for your responses, @slavag: some HV/LV substations have air-insulated switchgears, others have open-air isolators. HV protection uses fuses and switches, LV protection uses fuses and circuit-breakers. @slavag and @davidbeach: I apologize because my question is confusing, as I am not...

OK slavag, Do you have any documents or websites to help me understand more?

Thank you slavag, Apparently the so-called NCC controls HV/HV and HV/MV substations. Here what I want to control HV/LV substations (typically 22kV/400V).

Hi slavag, Here it's substation automation. Functionality: dispatcher receives data about a substation (e.g. transformers loading, currents, voltages, etc.). He is also able to open (respectively: close) the HV switch and LV circuit breaker to isolate (respectively: reconnect) the substation's...

Hello! I wish to thank you for the time and consideration you gave to my question. I need to know if it is possible for an Electric Utility to use SCADA from a Dispatch Center to automate their HV/LV distribution substations. In the Dispatch Center, dispatchers can supervise substations by...

Thank you all for your replies. Just wanted to share with you some conclusions I came up with. Based on your answers and on some web search, I found that Diesel sets are more suitable for our case. The goal is to keep O&M costs low (not necessarily initial costs). Diesel sets are most widely...

Thanks a lot for your help Waross! I really appreciate it. Actually that's for a client with whom I work as a Freelancer. So if we decide to use the reciprocating engines, we will only need 4 engines, and have less maintenance costs, compared to 17 diesel sets, right? However, I think we will...

Hi everyone, I wish to thank you for your time. Please I need your help to solve this question. I have a standard distribution system (11kV) making use of an islanded power plant (generator output 11kV) (See attached). The loads for each section are: 0.7MW, 1.1MW, 1.1MW, 0.9MW. Ahead of these...

Hi, thank you for your reply. The arc furnace is in a network that is usually connected to a utility grid. However, if a disturbance occurs on the utility grid, the network is islanded. Thanks.

Hello, thank you for your time. Throughout the industry, large Arc Flash furnaces are used in smelters that demand large current inrush capacity and re-strikes (high current peak in a very short period). Is there a way to control these spikes irrespective of having a utility connection or...

Dear QBplanner, thank you for your answer. I'm referring to Scenario II: During system normal conditions, 6 units 4 stations interconnect with the Grid assuming at 60kV and after forced outages, somehow the 6 units 4 plant stations will be islanded from the grid and continue to supply the local...

Dear waross, thank you for your response. I think that's an adequate solution for this situation. the process of load control and island operation has to be completely automated, with very few operator intervention. but i didn't understand what you mean by central load controller and master...

Hello, I hope everything is ok for you. First, I wish to thank you for the time and consideration you gave to my post. I am currently looking at the islanding operation of six distributed steam turbine generators in a 60kV high voltage network. Each generator is a salient pole synchronous...