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. 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

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 Pavel Novak – Germany – Session 1 – 0494 90 [kA]50 30 10
-10
-30
-50
88 kAp = 35 kAef
25 kAef ´
[ms]
Pavel Novak – Germany – Session 1 – 0494

9. iCB Specification Pavel Novak – Germany – Session 1 – 0494 90 [kA] 6438 12
-14
-40
88 kAp = 35 kAef
25 kAef
´ 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