Power System Protection
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 seminar class Active In SP Posts: 5,361 Joined: Feb 2011 26-02-2011, 02:42 PM presented by: Rajesh Sharma   Device-Coordination.ppt (Size: 1.32 MB / Downloads: 216) Power System Protection definition  Overcurrent Coordination A systematic study of current responsive devices in an electrical power system Objective  To determine the ratings and settings of fuses, breakers, relay, etc.  To isolate the fault or overloads. Criteria  Economics  Available Measures of Fault  Operating Practices  Previous Experience Design  Open only PD upstream of the fault or overload  Provide satisfactory protection for overloads  Interrupt SC as rapidly (instantaneously) as possible  Comply with all applicable standards and codes  Plot the Time Current Characteristics of different PDs Analysis When:  New electrical systems  Plant electrical system expansion/retrofits  Coordination failure in an existing plant Protection vs. Coordination  Coordination is not an exact science  Compromise between protection and coordination  Reliability  Speed  Performance  Economics  Simplicity Protection  Prevent injury to personnel  Minimize damage to components  Quickly isolate the affected portion of the system  Minimize the magnitude of available short-circuit Spectrum Of Currents  Load Current  Up to 100% of full-load  115-125% (mild overload)  Overcurrent  Abnormal loading condition (Locked-Rotor)  Fault Current  Fault condition  Ten times the full-load current and higher Coordination  Limit the extend and duration of service interruption  Selective fault isolation  Provide alternate circuits
 seminar ideas Super Moderator Posts: 10,003 Joined: Apr 2012 16-04-2012, 11:24 AM to get information about the topic "power protection system" full report ppt and related topic refer the link bellow http://topicideas.org/how-to-power-system-protection http://topicideas.org/how-to-design-of-p...ined-using
 hotelogix Hotelier Posts: 45 Joined: Apr 2011 18-04-2012, 05:00 PM Power System Protection is one of the techniques and methods through which we can save power by decreasing the load