What is Co-generation in the context of electrical power systems?

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When we change the tap position of 10MVA transformer it suddenly tripped with Out of step indication and also with Static differential relay indication, Transformer Bucholz relay indn and Low oil level indication. Before 1 week the same problem occured by changing the tap position. but at that time only oltc bucholz relay activated. After testing the TxR Relay team & PET team cant find any solid reason. The values are ok also. So plz answer wat's the reason for this incident? anybody plz help.

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dear all, i want to ask that what is diversity factor. please explain breifly. because i hve quiet no concept about this.

2 Answers  

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why the capacity of power plant is given in MW though the generators are rated in MVA?

3 Answers   TATA,

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what is real power and reactive power?

3 Answers  

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what questions will be asked for 11/33KV licence interview APSEB hyderabad. Can any one share question and answers.

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How to calculate HT XLPE CABLE for 11 kv / 433 v , 1500 kva oil type transformer system? plz provide step by step calculation

15 Answers   Engineers India, Indian Railways, Polycab, Shashwat, Sitara Energy, Sonali Bank,

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We know that, in case if there is a faulty insulation,or sc, the current is bypassed to earth through the earth wire that has low resistance.Actually, what will happen to that current that flows through gnd?In that case,if we come in contact with that faulty appliance, wont that current flow through us as we form a closed path by standing in gnd?Is grounding a safety measure?

3 Answers  

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how to calculate the lightning arrester conductor @ no of earth pits required

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what is static switch where it can be use?

1 Answers  

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What is Engine?

6 Answers   HSL,

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What happened If 3phase supply connected to slip ring side of slipring induction motor ?

2 Answers  

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