DEPARTMENT OF ELECTRICAL ENGINEERING

Gas Insulated Substation Seminar Report

13th October, 2015 At

Om Engineering College, Junagadh

Co-ordinator

Prof. H. V. Sojitra

Attended by 3rd Electrical Students

H.O.D. Prof. M. M. Baraiya

Prepared & Seminar By Merchant Aliraza S

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CONTENT

(1) Acknowledgement

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(2) Information

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(3) Purpose of Seminar

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(4) What we learn?

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(5) Conclusion

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ACKNOWLEDGEMENT We show gratitude towards our Principal/Director Prof. C. N. Jasani and H.O.D Prof. M. M. Baraiya who encourage us to take seminar on G.I.S (Gas Insulated Substation).

We are heartily thankful to our all faculty members for their support & continue guidance for the practical based approach learning to students.

We are also thankful to our 3rd semester electrical students who make this seminar successful by showing their curiosity regarding substations throughout the seminar.

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GENERAL INFORMATION OF G.I.S

Gas insulated substation is a substation that uses sulphur hexafluoride gases (SF6).High voltage current carrying parts are within a metal enclosure and are having co-centric configuration.The space between the conductor and enclosure filled with SF6 gas and moderate pressure.

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PURPOSE OF SEMINAR

Our main purpose for this Seminar is to be familiar with G.I.S (Gas Insulated Substation)equipment as well as to aware students for the precaution required in field work to avoid the accidents.

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WHAT WE LEARN?

We start our seminar at 10 A.M onwards at Om Engineering College, Junagadh. Mr. Merchant Aliraza S. (Student of5th Semester Electrical Engineering) taking this session and share his valuable knowledge with us.

MAIN PARTS OF GIS:

BUS BAR

CIRCUIT BRAKER

DISCONNECTORS (LINE OR

BUS)

EARTHING SWITCH

CURRENT TRANSFORMER

VOLTAGE TRANSFORMER

FEEDER DISCONNECTOR

FEEDER EARTHING SWITCH

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ADVANTAGES OF G.I.S:

Reduced Required Space

Reduced Noise

Safety Increases

No Possibility Of Accidents

No Risk Of Fire And Blast

Located Closer To Load Center To Reduced The Transmission And

Distribution Lines

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DRAWBACKS OF G.I.S:

High Cost Compared To Conventional Substation

Excessive Damages In Case Of Internal Fault

It Takes Very Long Time For Repairing Of Internal Fault

SF6 Gas Should Be Monitored In Each Compartments

Reduction In Pressure Of SF6 Gas In Any Compartment Results In Fault

SF6 Causes Ozone Depletion And Global Warming

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CONCLUSION

Since Only the Department of Electrical Engineering of Om Engineering

College has the permission to visit the Gas Insulated Substation near Rajkot, By

conducting this Seminar, students got brief idea regarding how to make

effective technical knowledge improvement on gas insulated Substation. This

will be beneficial to students as well as faculties. This seminar will be helpful to

student for getting job in industry because industry first requirement is

knowledge. Around 68 students were benefited and the faculty members of

electrical department has attended this seminar and got the knowledge about

the G.I.S.

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Thank You

Department of

Electrical Engineering