Answer / deepuraj

Substation are classified into
1.According to service requirement are
a.Transformer substation
1.Step up S.S
2.Primary grid S.S
3.Secondary S.S
4.Distribution S.S
b.Switching S.S
c.Power factor correction S.S
d.Frequency Changing S.S
e.Convrerting S.S
f.Industrial S.S
2.According to the constructional features
a.Indoor S.S
b.Outdoor S.S
c.Undergrond S.S
d.Pole mounted S.S

Answer / tarun aggarwal ymca

The substations can be classified in several ways including the
following:
i) Classification based on voltage levels e.g.:
AC Substation: EHV, HV, MV, LV; HVDC substation
ii) Classification-outdoor or indoor.
Outdoor substation is under open sky. Indoor substation is
inside a building.
iii) Classification based on configuration, e.g.:
a) Conventional air insulated outdoor substation or
b) SF6 Gas Insulated Substation (GIS)
c) Composite substations having combination of the above two.
iv) Classification based on application.
a) Distribution substation
b) Switchyard in Generating Station
c) Switching substation (without power transformers)
d) Sending-end substation
e) Receiving substation
f) Factory substation
g) Compensating substation e.g. having static var compensation etc.
h) Load substation, e.g. arc-furnace substation.

Answer / gbs

all answers comes under 2 main categories
1. AIS- Air insulated substation
2.GIS- Gas insulated substation
gis are normally underground or indoor type.
and ais ar open type

.if the vector group of two transformers is not same n tey r connected in parallel operation then what will happen?

2 Answers   ABB,

---

why we use condenser in the thermal power plant, althrough the same vapour will be again heated

0 Answers   Bhel,

---

what will happen if neutal in AC ckt will get open

3 Answers  

---

hi friends can u tell me name of the sites where i can get animation of electrical machines......

1 Answers  

---

What is ment by KVAR and what are the advantage&dis- advantages of KVAR

2 Answers  

---

what is power plant?

2 Answers  

---

A 10 kva ,400v/200V , single phase transformer with 10% leakage impedance draws a steady short -circuit line current of

1 Answers  

---

what is level 2 automation?

0 Answers  

---

What is the function of NGR for the parallel operation of alternator? whats happen when different rating of alternator are running with parallel?

0 Answers   Welspun,

---

What type of surgery impedence with 200ohs 

1 Answers  

---

highest rating of alternator used in india

1 Answers  

---

What is Electrical Engineering?

13 Answers   L&T, NTPC, Wockhardt,

---