PQ Monitoring with Smart Meters for Condition Based Maintenance on Distribution Systems

1. PQ Monitoring with Smart Meters for Condition Based Maintenance on Distribution Systems Tremblay – Canada – Session 2 – 0509

2. What are you talking about ? PQ Monitoring with Smart Meters for Condition Based Maintenance on Distribution Systems A new fault location technique: VDFL – Voltage Drop Fault Location A condition based maintenance (CBM) system: MILE – Maintenance Intelligente de Lignes Électriques + Tremblay – Canada – Session 2 – 0509

3. CBM in distribution system with MILE What we are looking for? What equipments? Incipient faults caused by trees, insulator flashovers, loose tie wires, etc. The distribution line in its entirety considered as a major equipment How? Monitoring and locating Non Persistent Faults What are the benefits? Reduced outage frequency, improved reliability and productivity Why? Acting before failure Tremblay – Canada – Session 2 – 0509

4. What is VDFL ? Patent Pending • Distributed PQ Monitors • 4 per feeder (HQ study) • Minimum of 2 • Voltage Drop Triangulation • Faulty lateral tap indentified… • Fault located…………………………………... • Voltage fault provided……………… • No measurement calibration needed • No need for accurate time basis • Centralised processing of signal synchronisation Tremblay – Canada – Session 2 – 0509

5. VDFL typical PQ monitoring installations Tremblay – Canada – Session 2 – 0509

6. Why use VDFL technique ? • Has been proven to be accurate • Fault located within +/- 162m 50% of time • Gives a reduced set of possible fault locations • The zone to patrol is considerably reduced • Easier to locate non persistent faults • Provides the voltage fault amplitude • Helps to identify the cause of faults before sending crews • Supplies valuable online information • Provides quick in office PQ analysis without displacement • Uses Smart Grid infrastructure • On line PQ monitors will be commonly available Tremblay – Canada – Session 2 – 0509

7. DMS Feeders Topology Outage Data (OMS) Weather Data Voltage Sag Data Fault Location Analysis (VDFL and others) Condition Based Maintenance Analysis Fault location Email Notification Damaged Fuse Identification Fault Type Identification Non persistent fault Identification Repetitive Fault Identification WEB Interface MILE Systems MILE System Overview Tremblay – Canada – Session 2 – 0509

8. Event calendar Email Topology database error detection Non persistent fault analysis MILE WEB Interface Tremblay – Canada – Session 2 – 0509

9. GoogleEarth ECCalled from MILE WEB interface Fault location (14 km from substation) Substation Tremblay – Canada – Session 2 – 0509

10. Zoom in Excessive conductor swing (Gallop) automatically identified by MILE Wind direction Real fault location 100m Tremblay – Canada – Session 2 – 0509

11. «Street View » Wind direction Possible excessive conductor swing? Tremblay – Canada – Session 2 – 0509

12. Field follow-up Tremblay – Canada – Session 2 – 0509

13. 2 3 • 1200km of conductor • 10500 clients 1 Ongoing Project on 7 Distribution Feeders 6 5 4 7 Tremblay – Canada – Session 2 – 0509

14. Extensive CBM practice on the feeder #5 Ranked among the worst feeders of 2006 and 2007 Average of 180 outages annually Tremblay – Canada – Session 2 – 0509

15. The benefits of CBMon the feeder #5 • Outage frequency reduced by 51% • CAIDI index reduced by 61% • Outages due to unknown causes reduced by 92% Outage time frame Crew Recall Time Travel to Fault Site Time Fault Location Patrol Time Repair Time Working on non persistent faults = Avoiding Outages Tremblay – Canada – Session 2 – 0509

16. What’s next? • Study for sharing Smart Grid infrastructures • Advanced Distribution Automation (ADA) • Advanced Metering Infrastructure (AMI) • Volt & Var Control (VVC) • Development of a global concept of fault location including outage locations for DMS • Industrialisation and commercialisation of MILE / VDFL technology (seeking partners) • Call for potential candidates in mid-June • Request for proposal (RFP) in September Tremblay – Canada – Session 2 – 0509