On-line Condition Monitoring of Distribution Network Assets – Making the Network Smarter Neil Davies Neil Davies – UK – Session 1: Network Components – Paper 0980

Contents Factors affecting network reliability The direct cost of failure Condition Assessment of MV Assets Smart Substation Monitoring Conclusions Neil Davies – UK – Session 1: Network Components – Paper 0980

Factors Affecting Network Reliability – Major Causes* Switchgear partial discharge faults Switchgear mechanical faults Other switchgear faults (e.g. lightning, protection) Cable faults Theft Vandalism *Ground Mounted Equipment Neil Davies – UK – Session 1: Network Components – Paper 0980

Factors affecting Network Reliability – Costs* *Ground Mounted Equipment Neil Davies – UK – Session 1: Network Components – Paper 0980

Planned intervention or unplanned remedial action? Neil Davies – UK – Session 1: Network Components – Paper 0980

Condition – the key factor in improving SAIDI and SAIFI Restoration of unexpected failures is more costly and takes longer Effective management of assets requires accurate knowledge of condition Condition links good investment, operation and maintenance of networks Improving network performance can have significant cost benefits Neil Davies – UK – Session 1: Network Components – Paper 0980

Partial Discharge Monitoring UltraTEV Monitor Powerful WEB enabled hub PD monitor Locate Transient Earth Voltage signals to resolution of 30cm Locate ultrasonic activity Locate Cable Discharge activity Correlate discharge with environmental and network conditions Neil Davies – UK – Session 1: Network Components – Paper 0980

Cable PD Monitoring from Substation Determine magnitude and location of discharge Correlate with switchgear discharge signals Map PD signals along length of cable Neil Davies – UK – Session 1: Network Components – Paper 0980

Substation Monitoring Approach The UltraTEV Monitor Hub provides a web based gateway into substation Additional condition and network parameters can be monitored Limited additional cost Improved business case for capital expenditure of condition monitoring Single interface per substation Neil Davies – UK – Session 1: Network Components – Paper 0980

Smart Substation Monitor Partial Discharge - Switchgear Power Quality Environment Circuit Breaker Trip Timing Partial Discharge - Cables Substation Monitor Web Fault Level Protection Battery Condition Security cameras and recording Asset / Circuit Algorithms System Voltage and Current Neil Davies – UK – Session 1: Network Components – Paper 0980

Smarter Networks Need Condition Monitoring Asset Partial Discharge - Switchgear Circuit Breaker Trip Timing Protection Battery Condition Security cameras and recording Partial Discharge - Cables Condition Neil Davies – UK – Session 1: Network Components – Paper 0980

Smarter Networks Need Condition Monitoring Asset Condition System Voltage and Current Power Quality Environment Asset / Circuit Algorithms Fault Level System Condition Neil Davies – UK – Session 1: Network Components – Paper 0980

Smarter Networks Need Condition Monitoring Asset Premature Ageing Condition Asset Capability System Capacity Smart Substation Monitor Performance Risk Headroom Capability System Change System Condition Neil Davies – UK – Session 1: Network Components – Paper 0980 The Smart Grid of tomorrow will be built on the assets of yesterday

The Smart Grid of Tomorrow Will Be Built Upon the Assets of Yesterday Smarter Networks Need Condition Monitoring The Smart Grid of Tomorrow Will Be Built Upon the Assets of Yesterday Neil Davies – UK – Session 1: Network Components – Paper 0980