project1 - Electrical Engineering Department ELEG 490 Power...

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Electrical Engineering Department ELEG 490 Power System Protection Project 1 Differential Relay for lines Prepared by: Khalid Ali Aljaafari ID: 010901570 Instructor: Dr. Majed Poshtan PI honor Pledge: “I pledge that I have neither given nor received any unauthorized assistance on this assignment” 1
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Table of contents: 1) Introduction ……………………………………………………. . 3 a. What is a relay?. ................................................................................. 3 2) Differential protection.…………………………………………. 4 a. Inner and outer view…………………………. .…………………… 6 3) Relays Manufacturers…………………………………………. . 7 a. General motors……………………………………………………. . 7 b. Siemens……………………………………………………………. ..7 c. ABB………………………………………………………………. .. 8 4) Appendix A……………………………………………………. . 9 5) Appendix B……………………………………………………. . 15 6) Appendix C……………………………………………………. . 22 11) References ……………………………………………………. 26 2 Page #
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List of Tables and Figures List of Tables and Figures Figure Name Figure Name Page Number Page Number Fig 1: Differential protection scheme . 4 Fig 2: Tripping range . 5 Fig 3: Connection of the relay . 6 Fig 4: Outer view 6 3
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1. Introduction: It is known that even the best electrical systems sometimes experience some failure resulting in equipment damaging and it disrupts the operations of the plant. Some of these failures like fault current can cause thermal and mechanical stress. In order to avoid these consequences, some protective devices are connected to the circuit such as, relays, circuit breakers and fuses. In addition, Protection devices minimize fault damages,
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This note was uploaded on 12/26/2010 for the course ELEG 490 taught by Professor Maiidposhtan during the Spring '06 term at The Petroleum Institute.

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project1 - Electrical Engineering Department ELEG 490 Power...

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