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Protection System Of Generating Stations Presentation Transcript
1.DIFFERENTIAL PROTECTION SYSTEM OF GENERATING STATIONS
2.Limitations of S.C.C
Only stator E/F is simulated.
For rest of protection only spill current is measured as being done in stability test.
It could not be checked whether spill current will actuate the relay and no contact of the relay will pickup master trip relay.
It is not foolproof simulation of generator protection.
Only stator E/F is simulated.
For rest of protection only spill current is measured as being done in stability test.
It could not be checked whether spill current will actuate the relay and no contact of the relay will pickup master trip relay.
It is not foolproof simulation of generator protection.
3.Site opinion about scc
S.C.C test should be conducted only in case of
rotor is thread-out .
Major work carried out in G.T
Any C.T is replaced in total generating system.
With the help of S.C.C we can ascertain the healthiness and sturdiness of stator windings.
S.C.C test should be conducted only in case of
rotor is thread-out .
Major work carried out in G.T
Any C.T is replaced in total generating system.
With the help of S.C.C we can ascertain the healthiness and sturdiness of stator windings.
4.WHAT WE ARE DOING IN SCC AND NORMAL STABILITY TEST?
5.Relay pickup values v/s spill current at 250 amp
6.TOTAL GENERATOR PROTECTIONS
7.SCC Curve – Unit # 1 (March 2005 & 2006)
8.OCC Curve – UNIT # 1 (March 2005 & 2006)
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