25-06-2012, 01:50 PM
TROUBLE SHOOTING
TROUBLE SHOOTING.docx (Size: 19.04 KB / Downloads: 41)
1) PROBLEM
In nhdc the water level is always low because maximum water is used in punasa hydro power plant, due to which all 8 turbines does not work at a time, so we could not get sufficient power. Therefore for starting we have to take power from near power stations.
1) SOLUTION
To gain sufficient power we should construct a thermal power plant near n.h.d.c. omkareshwar. Otherwise the water of river kaaveri must be used in omkareshwar dam.
2) PROBLEM
The loss in power is very high because maximum equipment used are mechanical, due to which friction increases in equipment’s. so the maintenances cost increases.
2) SOLUTION
The maximum electrical and electronic equipments should be used bu replacing the mechanical equipments.
3) PROBLEM
The power generated in omkareshwar dam is transferred to other cities but is not used in dam and omkareshwar. So we buy energy from other cities, which increases the cost of energy.
3) SOLUTION
The energy used in omkareshwar and dam must be solar energy, wind energy, bio-gas energy
4) PROBLEM
The oil used in transformer has to be changed in every 6 months or 8 months because the generation quality is very poor.
4) SOLUTION
The oil used must be of high viscosity so that the generation quality increases.
5) PROBLEM
Since due to the river the distance between the poles is large and the sag increases which result in power loss.
5) SOLUTION
The bridge construction should be of high quality and the poles should be fitted on the bridges itself.
6) PROBLEM
All the equipments, equipment structure, JBs, MOM box etc. are provided with double earth and connected to ground mat using 80 X 6 mm size galvanised earth strip
6) SOLUTION
Local earth mat of size 1.5M X 1.5M made of MS strip size 50 X 6 mm is provided near MOM box of all the isolators and earth switches for the safety of working personnel. The local earth mat is also connected with the ground mat.
7) PROBLEM
Distance Main - I Numerical Relay REL 521
Main - II Static Relay LZ 96
Power Swing Block Included in REL 521 and LZ 96 relay
Over voltage Stage - I (In built in REL relay)
Stage - II (RXEG21 Relay - One for each phase)
7) SOLUTION
The protection and relay panels installed in the switchyard control room covers all 04 outgoing line feeders bays, Bus coupler bay, transfer bus bay and the bus bars of switchyard.
8) PROBLEM
In electrical engineering, isolated-phase bus, also known as Phase-isolated Bus (PIB) in some countries, is a method of construction for circuits carrying very large currents, typically between a generator and its step-up transformer in a steam or large hydroelectric power plant. Each phase current is carried on a separate insulator, enclosed in a separate grounded metal housing.
8) SOLUTION
Conductors are usually hollow aluminum tubes or aluminum bars, supported within the housing on porcelain or polymer insulators. The metal housings are electrically connected so that induced current, nearly of the magnitude of the phase current, can flow through the housing, in the opposite direction from the phase current.
TROUBLE SHOOTING.docx (Size: 19.04 KB / Downloads: 41)
1) PROBLEM
In nhdc the water level is always low because maximum water is used in punasa hydro power plant, due to which all 8 turbines does not work at a time, so we could not get sufficient power. Therefore for starting we have to take power from near power stations.
1) SOLUTION
To gain sufficient power we should construct a thermal power plant near n.h.d.c. omkareshwar. Otherwise the water of river kaaveri must be used in omkareshwar dam.
2) PROBLEM
The loss in power is very high because maximum equipment used are mechanical, due to which friction increases in equipment’s. so the maintenances cost increases.
2) SOLUTION
The maximum electrical and electronic equipments should be used bu replacing the mechanical equipments.
3) PROBLEM
The power generated in omkareshwar dam is transferred to other cities but is not used in dam and omkareshwar. So we buy energy from other cities, which increases the cost of energy.
3) SOLUTION
The energy used in omkareshwar and dam must be solar energy, wind energy, bio-gas energy
4) PROBLEM
The oil used in transformer has to be changed in every 6 months or 8 months because the generation quality is very poor.
4) SOLUTION
The oil used must be of high viscosity so that the generation quality increases.
5) PROBLEM
Since due to the river the distance between the poles is large and the sag increases which result in power loss.
5) SOLUTION
The bridge construction should be of high quality and the poles should be fitted on the bridges itself.
6) PROBLEM
All the equipments, equipment structure, JBs, MOM box etc. are provided with double earth and connected to ground mat using 80 X 6 mm size galvanised earth strip
6) SOLUTION
Local earth mat of size 1.5M X 1.5M made of MS strip size 50 X 6 mm is provided near MOM box of all the isolators and earth switches for the safety of working personnel. The local earth mat is also connected with the ground mat.
7) PROBLEM
Distance Main - I Numerical Relay REL 521
Main - II Static Relay LZ 96
Power Swing Block Included in REL 521 and LZ 96 relay
Over voltage Stage - I (In built in REL relay)
Stage - II (RXEG21 Relay - One for each phase)
7) SOLUTION
The protection and relay panels installed in the switchyard control room covers all 04 outgoing line feeders bays, Bus coupler bay, transfer bus bay and the bus bars of switchyard.
8) PROBLEM
In electrical engineering, isolated-phase bus, also known as Phase-isolated Bus (PIB) in some countries, is a method of construction for circuits carrying very large currents, typically between a generator and its step-up transformer in a steam or large hydroelectric power plant. Each phase current is carried on a separate insulator, enclosed in a separate grounded metal housing.
8) SOLUTION
Conductors are usually hollow aluminum tubes or aluminum bars, supported within the housing on porcelain or polymer insulators. The metal housings are electrically connected so that induced current, nearly of the magnitude of the phase current, can flow through the housing, in the opposite direction from the phase current.