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 Pavel Novak – Germany – Session 1 – 0494

Use of adaptive load-management, 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

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

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

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

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

iCB Specification Pavel Novak – Germany – Session 1 – 0494 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

iCB Specification Pavel Novak – Germany – Session 1 – 0494 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

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

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