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L#10 Power _System_Stability_2

L#10 Power _System_Stability_2 - Power System Security in...

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pk1443 - 1 Power System Security in the New Industry Environment: Challenges and Solutions Prabha Kundur Powertech Labs Inc. Surrey, B.C. Canada Prabha Kundur Powertech Labs Inc. Surrey, B.C. Canada IEEE Toronto Centennial Forum on Reliable Power Grids in Canada October 3, 2003
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pk1443 - 2 Power System Security Security of a power system is affected by three factors: Characteristics of the physical system : the integrated generation, transmission and distribution system protection and control systems Business structures of owning and operating entities The regulatory framework
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pk1443 - 3 Challenges to Secure Operation of Today's Power Systems Power Systems are large complex systems covering vast areas national/continental grids highly nonlinear, high order system Many processes whose operations need to be coordinated millions of devices requiring harmonious interplay
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pk1443 - 4 Challenges to Secure Operation of Today's Power Systems (cont'd) Complex modes of instability global problems different forms of instability: rotor angle, voltage, frequency "Deregulated" market environment many entities with diverse business interests system expansion and operation driven largely by economic drivers; lack of coordinated planning
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pk1443 - 5 Traditional Approach to Power System Stability The November ,9 1965 blackout of Northeast US and Canada had a profound effect on consideration of stability in system design and operation focus, however, has been largely limited to transient (angle) stability The changing characteristics of power systems requires careful consideration of other aspects of stability Interarea oscillations; voltage stability System designed/operated to withstand loss of a single element Operating limits based on off-line studies scenarios based on judgment and experience
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