STAMFORD UNIVERSITY BANGLADESH. LAB-REPORT COURSE CODE : EEE 458. COURSE TITLE : POWER SYSTEM PROTECTION LAB. PERFORMANCE DATE : 25.01.2010 SUBMISSION DATE : 13.02.2010 SUBMITTED TO : Mr. Shaikhul Arefin Khan. Lecturer‚ Department of EEE‚ Stamford University‚ Bangladesh. This report is Prepared on the base of Energypac study tour in Saver. POWER SYSTEM PROTECTION LAB
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Investigation of Wireless Measure and Control Methodology for High Voltage Circuit Breaker I. INTRODUCTION The high voltage circuit breaker is the most important device for protection and control in power systems and its safety operation has always been an important requirement to be guaranteed. The working state of high voltage circuit breaker can be evaluating by the condition monitoring and fault diagnosis technology. If the data provided by the condition monitoring proved to be normal‚ the
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and Reproduction (e) Harmonic Impedance (b) Load Flow (f) Transient Stability (c) Short Circuit (g) Protection Co-ordination (d) Harmonic Penetration The first two items (a & b) form the heart of the suite which are explored in this assignment. In this assignment‚ a typical power network is constructed and Load Flow Analysis is performed. Short circuit levels and Fault current levels are monitored and compared with those obtained from analytical calculations
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current and voltage to moving if don’t take a protection or neglect transformet can be burn or controlling attendant can be exposed very huge voltage. All electrical systems require some kind of insulation to prevent short circuits and leaking currents. 3 forms of insulators: Solid‚ liquid and gaseous Performance of these insulators depend on the temperature. Classification according to their temperature rating: International Electrotechincal Commission has categories
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Operation and Control of Auxiliary Systems: FUEL/GBC: Safe operation of GBC Check out while starting: • CW System: Ensure that the cooling water pump & at least 04/05 nos fan are in running condition. • Seal Gas Skid: Always Charge gas through gas filters GT-F8102 and fill the system. This prevents dirty gas going to seals. • Always maintain barrier seal pressure @ 0.3to 0.5 atg on OTB side and TB side before start of the Lube oil Pump and during normal operation.
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m / F answer: a The SI unit of time is the second. Express 0.00001 seconds in a suitable sub multiple: a. 10 milliseconds‚ 10 ms b. 100 milliseconds‚ 100 ms c. 100 microseconds‚ 100 us d. 10 microseconds‚ 10 us answer: d In a magnetic circuit the magnetic field strength H is expressed in ampere turns/metre. H is calculated using the formula: a. H = I/nl b. H = nI/l c. H = Il/n d. H = nl/I answer: b The formula used to calculate the resistance (R) of a conductor‚ given its length
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RAJASTHAN RAJYA VIDYUT PRASARAN NIGAM LTD. (Regd. Office: Vidyut Bhavan‚ Janpath‚ Jyoti Nagar‚ Jaipur–302005) CONSTRUCTION MANUAL FOR SUB STATIONS Last Updated : 31-1-2008 FOREWORD The Engineers experienced in the field of Transmission have made this effort to compile the experience gained over the past 40 years in the form of a Manual and make it available to the Engineers and Technical Supervisors of the Company. This is a step forward to disseminate knowledge so that uniform practices
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CURRENT PROTECTION FUNCTIONS ANSI 50/51 – Phase over-current ANSI 50N/51N or 50G/51G – Earth fault or sensitive earth fault ANSI 50BF – Breaker failure ANSI 46 -Negative sequence / unbalance ANSI 49RMS – Thermal overload CURRENT PROTECTION FUNCTIONS ANSI 50/51 – PHASE OVERCURRENT Three-phase protection against overloads and phase-to-phase short-circuits. ANSI 50N/51N OR 50G/51G – EARTH FAULT Earth fault protection based on measured or calculated residual current values: ANSI 50N/51N:
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Code violations can be due to incorrectly sized‚ damaged or outdated wiring‚ faulty electrical panels‚ overloaded circuits‚ poor connections‚ exposed wiring hazards and other causes. If you are wondering who sets the electrical standards‚ it is the National Electrical Code‚ or the NEC‚ who establish the standards which guide electrical repair‚ installation and other
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Hazards of Electricity 1. Electric Shock 2. Fire / Short Circuit 3. Electric Burns Confidential Slide Electric Shock It is sudden & accidental stimulation of the body’s nervous system by electric current. It is the result of passage of electric current through the human body Confidential Slide • Most widely recognised danger of electricity. • When a person standing on the ground touches a live wire‚ or touches a live tool or machine with poor insulation or hits a live cable‚ then a person
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