1. Utilizing IED Capability to Reduce Wiring Terrence Smith, GE Digital Energy Multilin Richard Hunt, GE Digital Energy Multilin Jakov Vico, GE Digital Energy Multilin

2. Introduction Reducing Wiring is not a new concept

3. Introduction Review of the Design/Installation Process A case study of a medium voltage breaker A case study of a transmission breaker A case study of a control IED as a transformer alarm aggregator

4. Introduction A case study of a high voltage circuit breaker using process bus. A look at the direction the industry will likely head. Rules we can develop from the case studies.

5. Introduction-How the design is communicated Typical Schematic Diagram

6. Introduction-How the design is communicated Typical Wiring Diagram

7. Introduction-How the design is communicated The design process

8. Introduction-How the design is communicated The design process

9. Case Study One- Medium Voltage Switchgear

10. Replace with IED Pushbutton

11. Case Study One- Medium Voltage Switchgear Replace with Latching Elements and IED Communications

12. Case Study One- Medium Voltage Switchgear Replace IED to SCADA communications

13. Case Study One- Medium Voltage Switchgear

14. Replaces Control Switch

15. Case Study One- Medium Voltage Switchgear Replaces SCADA Trip Contact

16. Case Study One- Medium Voltage Switchgear Replaces Lockout Relays

17. Case Study One- Medium Voltage Switchgear The new circuit is much simpler

18. Case Study One- Medium Voltage Switchgear The real value of internal lockout relays is seen in the close circuit

19. Case Study One- Medium Voltage Switchgear

20. Close Operands

21. Case Study One- Medium Voltage Switchgear Close Operands Block Close Logic

22. Case Study One- Medium Voltage Switchgear Optimization Benefits 1. Simpler Circuits meaning reduced design time, reduced wiring time, and reduced commissioning time. 2. Bench tested logic replaces wiring which reduces commissioning time. 3. Logic is repeatable and consistent.

23. Case Study One- Medium Voltage Switchgear Optimization Challenges 1. Cost of communications equipment, design, and installation 2. Operational challenges associated with process change.

24. Case Study Two – Breaker and a Half Scheme

26. 62 wires and 124 terminations for one breaker of this scheme.

27. Case Study Two – Breaker and a Half Scheme

30. Case Study Three – Transformer Alarm Aggregator

31. Case Study Three – High Voltage Breaker with Process Bus

33. Future Directions – A station IED

34. Conclusions Rule #1: Wire a Process Value once and only once. Rule #2: If a function does not have to be wired, then dont.

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