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

Introduction Reducing Wiring is not a new concept

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

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.

Introduction-How the design is communicated Typical Schematic Diagram

Introduction-How the design is communicated Typical Wiring Diagram

Introduction-How the design is communicated The design process

Introduction-How the design is communicated The design process

Case Study One- Medium Voltage Switchgear

Replace with IED Pushbutton

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

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

Case Study One- Medium Voltage Switchgear

Replaces Control Switch

Case Study One- Medium Voltage Switchgear Replaces SCADA Trip Contact

Case Study One- Medium Voltage Switchgear Replaces Lockout Relays

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

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

Case Study One- Medium Voltage Switchgear

Close Operands

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

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.

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

Case Study Two – Breaker and a Half Scheme

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

Case Study Two – Breaker and a Half Scheme

Case Study Three – Transformer Alarm Aggregator

Case Study Three – High Voltage Breaker with Process Bus

Future Directions – A station IED

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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