Frankfurt (Germany), 6-9 June 2011 Neil Davies – UK – Session 1: Network Components – Paper...

Frankfurt (Germany), 6-9 June 2011

Neil Davies – UK – Session 1: Network Components – Paper 0980

On-line Condition Monitoring of Distribution Network Assets – Making the

Network Smarter

Neil Davies


Factors affecting network reliability The direct cost of failure Condition Assessment of MV Assets Smart Substation Monitoring Conclusions


Contents


Switchgear partial discharge faults Switchgear mechanical faults Other switchgear faults (e.g. lightning, protection) Cable faults Theft Vandalism

*Ground Mounted Equipment


Factors Affecting Network Reliability – Major Causes*


Factors affecting Network Reliability – Costs*

£-£2£4£6£8

£10£12£14£16£18£20

Cost (Millions)

Cost of factors affecting UK Network reliability

*Ground Mounted Equipment



Planned intervention or unplanned remedial action?



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


Condition – the key factor in improving SAIDI and SAIFI


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



Cable PD Monitoring from Substation UltraTEV Monitor Capture

1750

1800

1850

1900

1950

2000

2050

2100

2150

-5 0 5 10 15 20 25

Time (us)

Am

plitu

de (A

DU

)

Determine magnitude and location of discharge

Correlate with switchgear discharge signals

Map PD signals along length of cable



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



Smart Substation MonitorPartial Discharge - Switchgear

Circuit Breaker Trip Timing

Protection Battery Condition Security cameras and recording

System Voltage and Current

Power Quality Environment

Partial Discharge - Cables

Substation MonitorWeb

Asset / Circuit Algorithms

Fault Level



Smarter Networks Need Condition Monitoring

AssetCondition

Partial Discharge - Switchgear

Circuit Breaker Trip Timing

Protection Battery Condition

Security cameras and recording

Partial Discharge - Cables




AssetCondition

SystemCondition

System Voltage and Current

Power QualityEnvironment

Asset / Circuit Algorithms

Fault Level




The Smart Grid of tomorrow will be built on the assets of yesterday

AssetCondition

AssetCapability

PerformanceRisk

SystemCondition

HeadroomCapability

SystemCapacity

SystemChange

PrematureAgeing

SmartSubstation

Monitor



The Smart Grid of Tomorrow Will Be Built Upon the Assets of Yesterday



Frankfurt (Germany), 6-9 June 2011 Neil Davies – UK – Session 1: Network Components – Paper...

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Transcript of Frankfurt (Germany), 6-9 June 2011 Neil Davies – UK – Session 1: Network Components – Paper...