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Pavel Novak – Germany – Session 1 – 0494

Local Intelligent Circuit Breakers – A New Concept for the Refurbishment of Existing Distribution Network. Pavel Novak – Germany – Session 1 – 0494. Inhalt. 1. Introduction 2. Requirements of future distribution networks 3. Concept of iCB 4. Specification of iCB 5. Conclusion.

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Pavel Novak – Germany – Session 1 – 0494

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  1. Local Intelligent Circuit Breakers – A New Concept for the Refurbishment of Existing Distribution Network Pavel Novak – Germany – Session 1 – 0494

  2. Inhalt 1. Introduction 2. Requirements of future distribution networks 3. Concept of iCB 4. Specification of iCB 5. Conclusion Pavel Novak – Germany – Session 1 – 0494

  3. Introduction • „Greenfields“ vs. Existing infrastructure • Investment demand in EU distribution grids up to 300 mlds. € / 30 years • Grid extensions and refurbishment Use of adaptive load-management, local intelligence Pavel Novak – Germany – Session 1 – 0494

  4. Requirements of future distribution networks Centralized power supply Power flow direction Pavel Novak – Germany – Session 1 – 0494

  5. Requirements of future distribution networks Decentralized power supply Power flow direction Pavel Novak – Germany – Session 1 – 0494

  6. Requirements of future distribution networks Pavel Novak – Germany – Session 1 – 0494

  7. iCB Concept • Real time monitoring of network state • Local intelligence – switching capability • Decission matrix Pavel Novak – Germany – Session 1 – 0494

  8. iCB Specification 90 [kA] 50 30 10 -10 -30 -50 88 kAp = 35 kAef 25 kAef 0 50 100 150 200 ´ 250 [ms] Pavel Novak – Germany – Session 1 – 0494

  9. iCB Specification 90 [kA] 64 38 12 -14 -40 88 kAp = 35 kAef 25 kAef 0 50 100 150 200 ´ 250 [ms] Pavel Novak – Germany – Session 1 – 0494

  10. iCB Specification • Quick evaluation of short-circuit current - over-current measurement - directional protection • Quick tripping mechanism - magnetic actuator - Thomson-Drive • Separation of faulted feeder + reclosing of local power generation within 100ms  under conventional protection setting times in distribution grids Pavel Novak – Germany – Session 1 – 0494

  11. Conclusion • High costs are expected in existing distribution grids for the adaption on operational equality with smart grids • The iCB concept matches the requirements of future distribution grids • It can guarantee the system stability without any massive refurbishment of network components Pavel Novak – Germany – Session 1 – 0494

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