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    32KV SUBSTATION

    Presented By-Gourav-3513671Parmod-3513670

    Electrical And ElectronicsEngineering

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    CONTENTS

    1. SUBSTATION.2. KEY DIAGRAM

    3. EQUIPMENTS OF SUBSTATIONa). BUS BAR

    b). LIGHTNING ARRESTERS

    c). CT & PT

    d). ISOLATER

    e). CIRCUIT BREAKER

    f). TRANSFORMER4. CONTROL PANEL

    5. POWER BANK

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    An electrical substationis a subsidiarystation of a transmission and distributionsystem where voltage is transformed from high

    to low using transformers.

    Electric power may flow through several

    substations between generating plant andconsumer, and may be changed in voltage inseveral steps.

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    TYPES OF SUBSTATION

    1. INDOOR SUBSTATION2. OUTDOOR SUBSTATION

    3. POLE MOUNTED SUBSTATION

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    1. INDOORSUBSTATION:- The

    substation which is

    situated inside a

    building called indoorsubstation. These

    substations are of low

    power.

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    OUTDOORSUBSTATION:-The

    substations which are

    installed in an open

    place under the sky.

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    POLE MOUNTED SUBSTATION:- Thesesubstations have a single transformer

    which is mounted on poles.

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    Primary Substationsreceive power from EHV lines

    at 400KV, 220KV, 132KV and transform the voltage

    to 66KV, 33KV, 22KV or 11KV

    Secondary Substationsreceive power at 66/33KV

    which is stepped down usually to 11KV.

    Distribution Substations receive power at 11KV, 6.6

    KV and step down to a volt suitable for LV

    distribution purposes, normally at 415 volts

    PRIMARY/SECONDARY/DISTRIBUTI

    ON SUBSTATIONS

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    KEY DIAGRAM

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    EQUIPMENTS OF SUBSTATION

    a). BUS BAR :- Inelectrical powerdistribution, a busbaris a strip or bar ofcopper, brass or

    aluminium thatconducts electricitywithin a switchboard,distribution board,substation, battery

    bank, or otherelectrical apparatus.

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    b). LIGHTNING ARRESTER

    :-A lightning arrester is a

    device used on electrical

    power systems and

    telecommunications

    systems to protect the

    insulation and conductors

    of the system from thedamaging effects of

    lightning. The typical

    lightning arrester has a

    high-voltage terminal anda ground terminal.

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    CT & PT :- A current

    transformer (CT) is

    used for measurement

    of alternating electric

    currents. Current

    transformers, togetherwith voltage (or

    potential) transformers

    (VT or PT), are known

    as instrumenttransformers.

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    ISOLATOR:- It is amanually operated

    mechanical switch

    which break the

    electrical circuit underno load conditions.

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    CIRCUIT BREAKER:-

    .It is automatically operated switch which breakes the

    electrical circuit.

    .It can operate on both coditions "No Load" & "Full

    Load".

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    TRANSFORMER:-It isa static electrical

    device which transfer

    the electrical power

    from one circuit toanother by changing

    voltage level without

    changing frequency.

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    CONTROL PANEL:- Itis the essential part of

    a substation which

    controls the whole

    activity of a substationfrom input to output

    like tripping,

    measurements etc.

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    POWER BANK:-It isused to supply DC

    power to different

    small equipments

    used in control panellike protective relays

    etc.

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    THANK YOU