Prague, 8-11 June 2009

Evaluation of a Self Healing Distribution Automation Scheme on the Isle of Wight

Bik-US-Session5-Paper0178.ppt

Prague, 8-11 June 2009

Scottish and Southern Energy (SSE) • • • •

One of top 30 companies in the UK Market capitalization over £9.6 billion 17,000 employees 2nd largest electricity generator across the UK • 2nd largest energy supplier in the UK • Over 9 million customers

Bik-US-Session5-Paper0178.ppt

Prague, 8-11 June 2009

IntelliTEAM ® Evaluation Project • DA system on the Isle of Wight

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Prague, 8-11 June 2009

Isle of Wight Evaluation System • • • •

Represents typical SSE network layout Area is subject to severe weather conditions Evaluation is being done on challenging network Power restoration target of less than 3 minute set by OFGEM

Bik-US-Session5-Paper0178.ppt

Prague, 8-11 June 2009

Expected Project Benefits • •

•

Reduction of restoration times to less than 3 minutes using distributed intelligence Reduction in fault impact by increased feeder segmentation, pulseclosing, peer-to-peer communications, and automatic restoration Better asset utilization by integration of legacy equipment into the automatic restoration system using Universal Interface Modules

Bik-US-Session5-Paper0178.ppt

Prague, 8-11 June 2009

Feeder Device Location • Determine locations for most cost-effective reliability improvement • Factors: – Fault rate – Average time to switch – Average time to complete a repair – Customer priority – Underground / overhead split

Bik-US-Session5-Paper0178.ppt

Prague, 8-11 June 2009

IntelliRupter ® (IR) PulseCloser • • • • •

High performance fault interrupter Design for accuracy with low tolerances More IntelliRupters can be coordinated in series than conventional reclosers Sensitive earth fault protection down to 3 amperes Runs native distributed intelligence automatic restoration system

Bik-US-Session5-Paper0178.ppt

Prague, 8-11 June 2009

PulseClosing Technology • PulseClosing uses a minor loop of fault current to differentiate fault versus load • PulseClosing tests the line for faults without closing CLOSING ANGLE 118° AFTER VOLTAGE ZERO Voltage

This Is the Pulse! Current

Bik-US-Session5-Paper0178.ppt

Prague, 8-11 June 2009

PulseClosing Technology • Permanent fault using a recloser or a breaker

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Prague, 8-11 June 2009

PulseClosing Technology • The same with IR PulseClosing

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Prague, 8-11 June 2009

PulseClosing Technology • Test as many times as required • Improvements as compared to hard reclose by conventional recloser: – Conductor life – Conductor accessory life – Transformer life

Bik-US-Session5-Paper0178.ppt

Prague, 8-11 June 2009

Reduced Fault Let-Through 6,000,000

5,000,000

4,000,000

3,000,000

2,000,000

1,000,000

-

Conve n Reclo tional sing

3,000 4,000

Availa ble

Bik-US-Session5-Paper0178.ppt

6,000

Fault C u

rrent (

amps)

8,000 10,000

Pulse Closin g

Prague, 8-11 June 2009

PulseFinder • Communication not required in radial systems • Use in lieu of overcurrent protection • Use to add segmentation to overhead loop restoration systems • Fast recovery from loss of communications signal in complex restoration systems

Bik-US-Session5-Paper0178.ppt

Prague, 8-11 June 2009

PulseFinder

• Non-communicating automatic sectionalizing

and restoration • Coordinate as many devices as possible, but shared curves for remaining devices

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Prague, 8-11 June 2009

PulseFinder

• T = 0 sec • Fault is downstream from IR-4 • All PulseClosers with A3 curve trip

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Prague, 8-11 June 2009

PulseFinder

• T = 1 sec • IR-2 pulses

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Prague, 8-11 June 2009

PulseFinder

• T = 1 sec • IR-2 pulses and closes

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Prague, 8-11 June 2009

PulseFinder

• T = 1.5 sec • IR-3 pulses

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Prague, 8-11 June 2009

PulseFinder

• T = 1.5 sec • IR-3 pulses and closes

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Prague, 8-11 June 2009

PulseFinder

• T = 2 sec • IR-4 pulses

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Prague, 8-11 June 2009

PulseFinder

• T = 2 sec • IR-4 pulses and locks out (permanent fault)

Bik-US-Session5-Paper0178.ppt

Prague, 8-11 June 2009

IntelliTEAM II Automatic Restoration System • • • • • • •

Smart Grid enabled, self-healing system Easily applied to complex feeders Accommodates multiple power sources Scalable - supports systems of virtually any size Uses real-time load data to prevent overloads Automatic return to normal configuration Open architecture

Bik-US-Session5-Paper0178.ppt

Prague, 8-11 June 2009

IntelliTEAM II – Team Concept

Bik-US-Session5-Paper0178.ppt

Prague, 8-11 June 2009

IntelliTEAM II Automatic Restoration System • In this project, IT II works with IRs and UIMs/breakers to achieve restoration • IT II requires no central monitoring or SCADA control • Restoration proceeds without delays • Monitors current and voltage • Uses real-time information to make smart switching decisions • Acts locally before breakers or reclosers lock out

Bik-US-Session5-Paper0178.ppt

Prague, 8-11 June 2009

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Prague, 8-11 June 2009

IntelliTEAM II Universal Interface Module (UIM) • Enables Intelligent Electronic Devices (IED) such as breaker relays to function as team member of IT II system • Allows the host device to communicate with other team members using DNP 3.0 • Supplies real-time feeder loading information to its team

Bik-US-Session5-Paper0178.ppt

Prague, 8-11 June 2009

IntelliTEAM II Universal Interface Module (UIM)

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Prague, 8-11 June 2009

Project Status • The system has been deployed and IT II logic is active • No restoration has occurred yet, but individual devices correctly responded to several SEF events

Bik-US-Session5-Paper0178.ppt

Prague, 8-11 June 2009

Questions ?

Contact: • • •

[email protected] [email protected] [email protected]

Bik-US-Session5- Paper 0178.ppt