Single Phase and three Phase Distribution Substation SEMINAR ON Single Phase and three Phase Distribution Substation P. Ashis Ku. Patra Regd. No-0701214208 Electrical Engg.
* Requirement of Substation * What is a Substation Introduction: * Requirement of Substation * What is a Substation
Classification: 1. In accordance with the service a. Static b. Converting 2. In accordance with the service voltage a. Extra high voltage transmission Substation b. Step-down or Distribution Substation c. Industrial Substation d. Substation for power factor correction
Classification contd. 3. In accordance with mounting a. Pole-mounted Substation b. Foundation-mounted Substation
POLE MOUNTED FOUNDATION MOUNTED
Selection and Location of Site for a Distribution Substation: Availability of land Accessible to public road Away from chemical industries Nearer to load center
Single phase Distribution Substation Ratings: 25 kVA 11/0.433 kV 1.31/33.34 Amp Delta-Star Core type transformer % impedance voltage=4
RATING PLATE
Three phase Distribution Substation Ratings 250 kVA 11000/433 V 13.12/333 Amp Delta-Star Core type transformer % impedance voltage=4.6
OVERALL VIEW OF THREE PHASE DISTRIBUTION SUBSTATION
Equipments for a distribution substation Main Bus-Bar Lightning Arrestor Measuring kiosk (CT,PT) Isolators(AB switch) Horn Gap fuse Rod gap Arrestor Distribution Transformer Control Cables
Equipments for a distribution substation Contd. Circuit Breaker (MCCB) Protective Relays Control room Earthing
MAIN BUS-BAR
LIGHTNING ARRESTOR
MEASURING KIOSK (CT,PT)
ISOLATORS(AB SWITCH)
HORN GAP FUSE
ROD GAP ARRESTOR
DISTRIBUTION TRANSFORMER
CONTROL CABLE
CIRCUIT BREAKER (MCCB)
EARTHING
References: OPTCL, Chandaka Electrical Power By J.B. Gupta www.wikipedia.com
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