SIL 1168 HV Tech Brochure
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Transcript of SIL 1168 HV Tech Brochure
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High Voltage
Technical Services
www.silcar.com.au
High voltage testing
Commissioning and maintenance of transmission
Generation
Distribution
Mining and process plant electrical equipment switchboards
Transformers
Generators
Motors and associated electrical apparatus
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02
Silcar high voltage technical services utilises highly
skilled and trained technical staff to provide a wide
range of testing, commissioning and high voltagetest services Australia wide.
Silcar provide a wide range of testing, commissioning and high voltage test services
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Testing and commissioning services for
transmission, distribution, generation and
mining industries electrical infrastructure
Silcar provides commissioning and maintenance testing of protection relays
and schemes. We utilise highly skilled eld technical personnel using Doble and
Omicron secondary injection test equipment to provide:
3 Project management and commissioning of protection and control schemes
in new and existing sub stations
3 Factory Acceptance Testing of electrical switchboards (FAT)
3 Site Acceptance Testing of electrical ewitchboards (SAT)
3 Maintenance of existing protection schemes
3 Development of data setting les for numerical protection relays
3 Test plans, relay setting and relay logic les
3 Simulation testing of SCADA systems to ensure correct functions integrity
3 Development of quality Inspection Test Plans (ITPs).
Testing Capability
3 Protection relay programming and scheme testing
3 Protection relay maintenance
3 Secondary injection
3 Primary injection
3 Current transformer testing
3 Voltage transformer testing
3 Battery discharge testing
3 High voltage testing of switchboard apparatus
3 Ductor testing
3 Insulation resistance testing
3 Circuit breaker testing and commissioning
3 Metering equipment commissioning and testing
3 Scada interface testing
3 On Load measurement of current and voltage
3 Fault nding
3 Earth resistance testing
Silcar protection scheme testingand commissioning services
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Dielectric Loss Angle test (DLA)
The DLA test, also known as DDF, Doble, Power factor test, is used
to determine conditions of an insulation medium in a high voltage
apparatus.
Applications: transformers, current & voltage transformers,
bushings, generators, motors
and surge arrestors.
Silcar provides a specialist diagnostic high voltage testing capability.
Technical Services staff utilise specialised condition monitoring
and diagnostic equipment to quickly and accurately establish the
condition of HV plant. The range of available services and their
typical application is outlined below:
Frequency
Response
Analysis (FRA)
The FRA test system is designed to detect winding movements
resulting from shipping damage, or subjection to low impedance
through faults.
Applications: power transformers.
Partial Discharge test (PD)
Partial Discharge is an electrical discharge that occurs across
a portion of the insulation between two conducting electrodes,
without completely bridging the gap. Partial discharges can occur
in voids in solid insulation (paper, polymer), gas bubbles in liquid
insulation or around an electrode in a gas (corona).
PD testing is particularly important where HV plant has a high
criticality. This may be due to its age, historical failures or the
consequences of its failure (such as position in the network).
Applications: transformers, current and voltage transformers,
bushings, generators, motors, switchgear (SF6).
Frequency response analysis (FRA)
2MHz range amplitude
Frequency (hz 000s)
a2 - n RMS b2 - n RMS
5
0
-5
-10
-15
-20
-25
-30
0 200 400 600 800 1000 1200 1400 1600 1800 2000
Gain(db)
c2 - n RMS
Very Low Frequency (VLF)
high potential test
The VLF test focuses on high voltage cables, but can also be applied
to rotating machinery, transformers, arrestors and insulators.TheVLF high potential test is the only high potential test approved for
XLPE cables.
Silcar high voltage testing services
04 Silcar provide a wide range of testing, commissioning and high voltage test services
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Ring Flux test
The ring ux test can detect deep core lamination breakdown as well
as back core burning, which may not be detected by the ELCID test.
The core damage is represented by a localised heating of the core
laminations, which is then detected by thermography equipment.
Applications: generator stators
Recurrent Surge Oscillograph
(RSO) test
This test is most sensitive to inter-turn insulation faults, or shorted
turns on generator rotors. It can also be used to detect open circuits
and earth faults of the rotor windings.
Applications: generator and motor rotors
Thermography (detection tool)
Thermography will quickly locate hot spots and determine the
severity of the problem. Thermography is also particularly useful forinspecting indoor and outdoor components such as motor control
centres, substations, breaker panels, switchgear, transformers and
circuit breakers.
Applications: transformers, current and voltage transformers,
bushings, generators, motors, switchgear
DC Insulation Resistance (IR)
and Polarization Index (PI)
A megohmmeter (insulation resistance tester), is used to measure
the ohmic value of an insulator under a direct voltage of great
stability. The insulation resistance test is a non-destructive test and
can detect where insulation is satisfactory.
Applications: transformers, current and voltage transformers,
bushings, generators, motors, switchgear.
Transformer Ratio test
Transformer turns ratio measurements are best made with
specialised instruments that include detailed connection and
operating instructions. The measured turns ratio should be within
0.5% of the calculated turns ratio. Ratios outside this limit may be
the result of winding damage, which has shorted or opened some
winding turns.
Applications: transformers, current and voltage transformers
Winding Resistance test
Transformers are subject to vibration. Problems or faults occur
due to poor design, assembly, handing, poor environments,
overloading or poor maintenance. Measuring the resistance of the
windings assures the connections are correct and the resistance
measurements indicate there are no severe mismatches or opens.
Applications: transformers, current and voltage transformers,
bushings, generators, motors, switchgear (SF6).
Electromagnetic Core Imperfection
Detection (ELCID) test
The ELCID test was developed in the late 1970s by the Central
Electricity Generating Board (CEGB) in the UK to enable it to readily
test machines where a high power source for traditional ring ux test
was not available. Because of a large number of laminations and thin
insulation layers there is a high probability of insulation breakdown.
The fault currents induced can be large and cause excessive local
core heating. If not detected and repaired at an early stage, faults
can be catastrophic.
Applications: generators, motors
Pole A
Pole B
Flux Probe
Quadrature
Axis
Slot
Leakage
Flux
Air Gap (Rotor) Flux test
Flux monitoring via permanently mounted air gap ux probes is a
proven technology in synchronous machines to determine if turn-to-
turn shorts have occurred in the rotor winding. Flux measurements
are the most powerful means of monitoring the condition of rotor
windings on-line and can provide information on the integrity of
the rotor winding inter-turn insulation. This information is critical
in planning maintenance, explaining abnormal vibrations, and
verifying new and rewound rotor integrity.
Applications: generator rotors
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2012 UGL SP Ausnet Ringwood, Glenrowan and West
Melbourne Terminal Stations Victoria.
Testing and commissioning associated with 66kV CT replacement
program.
2012 UGL Verve Power Station WA.
Commissioning engineers to provide assistance with commissioning
of generator and transformer protection schemes.
2011 2012 Siemens Goonyella Terminal Substation Moranbah
Queensland.
120 KV terminal substation (green eld) pre-commission and
commission substation.
2012 2013 Siemens Woodside KGP Karratha, WA.
Pre-commissioning and commissioning of the substation 33kV GIS
replacement program.
2011 2012 Siemens Eraring Power Station.
Test & commissioning on generator/transformer protection upgrade.
2011 2012 Siemens Sino Iron Power Plant Cape Preston, WA.
Pre-commissioning and commissioning work at Sino Iron port substation.
2010 2011 Archer Zone Substation Darwin Darwin, NT.
66Kv to 11 KV zone substation (green eld) pre-commission and
commission substation.
2010 2011 Mortlake Power Station 500kV Switchyard
Mortlake, Victoria.
500kV switchgear and protection scheme commissioning.
2009 2010 Sino Iron Power Plant Cape Preston, WA.
220kV, 33kV, 11kV & 6.6kV switchgear and protection commissioning.
2008 TRUenergy Yallourn Power Station.
Generator stator re-wind. High voltage testing of stator winding duringthe outage. ELCID test before, during and after re-wind.
2007 Rowville Terminal Station.
333.3MVA 500/220kV single phase auto transformers congured as
YNa0d1. Full commissioning and testing.
2007 - Kalgoolie Nickel Smelter.
B Set furnace transformer change over full turn key operation.
Including all SAT and witness FAT, Alstom, Rocklea, Queensland.
2007 2009 Jeeralang Power Station Protection Upgrade
Jeeralang, Victoria.
7 x generator/transformer protection scheme commissioning.
2006 - 2007 Transend Package B Substation Project TAS.
4 x 110kV/22kV Substations switchgear, transformer and protection
commissioning
Major projects include
Silcar has been providing high voltage services since 2000. Projects include substation commissioning, maintenance of
transmission, distribution and process plant electrical infrastructure, and high voltage testing of transformers, generators,
motors and switchboards and associated apparatus.
Our activities include Factory Acceptance Testing and Site Acceptance Testing on site pre-commissioning, commissioning
and maintenance.
Major Silcar projects
Silcar provide a wide range of testing, commissioning and high voltage test services
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TRANSFORMERS
3 Frequency Response Analysis (FRA)
3 Dielectric Loss Angle (DLA) test on bushings and transformers
3 Insulation resistance test & polarisation index test
3 Winding resistance test
3 Winding ratio test
3 Impedance test
3 Applied voltage or AC high potential (Hi-pot) test
3 Induced voltage test
3 Surge arrestor watts loss test
3 Condition monitoring reports
3 Visual inspections
GENERATORS AND MOTORS
3 Dielectric Loss Angle (DLA) test
3 Partial Discharge test (PD)
3 Electromagnetic Core Imperfection Detection (ELCID) test
3 Winding resistance test
3 Impedance test
3 Recurrent Surge Oscillograph (RSO) test
3 Current spectrum analysis
3 Applied voltage or AC high potential (Hi-pot) test
3 Iron core loss test
3 Broken rotor bars (Induction Heater) test
3 Insulation resistance test
3 Polarisation index test
3 Air gap probe ux test
3 DC controlled over voltage test (step & continuous) also known
as step ramp test
3 Visual inspections
OTHER TESTS
3 Cable high potential (DC or VLF [very low frequency]) test
3 Instrumentation (functionality test and calibration)
3 Protection and metering testing
3 Primary injection
3 Energy measurement
3 Testing of operating equipment
3 Battery discharge testing
POWER TRANSFORMERS
3 Sweep Frequency Response Analysis (SFRA)
3 Dielectric Response Analysis (DIRANA)
3 Winding Dielectric Loss Angle (DLA)
3 HV Bushing DLA
3 Winding Insulation Resistance (IR)
3 Polarisation Index (PI)
3 Winding Resistance (through taps- HV)
3 Low voltage impedance
3 Low voltage induce
3 Low voltage no-load loss & load loss
3 Separate source
3 Single phase excitation (through taps)
3 Surge arrestors IR & DLA
3 Winding & oil temperature indicator calibration/check
3 Auxiliary controls
3 Visual inspection
3 Condition monitoring report
ROTATING MACHINES
Stator Core:
3 Inspection services
3 Core lamination tightness
3Thermography
3 Electromagnetic Core Imperfection Detector (ELCID)
3 Ring Flux (c/w Thermography)
Stator Winding
3 Insulation Resistance (IR)
3 Polarisation Index (PI)
3 Winding Dielectric Loss Angle (DLA) - power frequency up 25kV AC
3 Off - Line Partial Discharge (PD) - power frequency up to 25kV AC
3 DC resistance
3 DC Controlled Overvoltage (DCCO)
3 AC & DC Hi - Pot
Rotor Winding3 Recurrent Surge Oscillograph (RSO)
3 Off-line at stand still / speed
3 Air Gap Flux Probe - on line
3 Current Spectrum Analysis - on line
3 Residual magnetisms
3 Insulation Resistance (IR)
3 Polarisation
3 Resistance
3 Impedance
3 AC high potential
3 Pole balance
HIGH VOLTAGE CABLES3 Insulation resistance
3 AC high potential (Power Frequency & VLF)
3 DC high potential
3 Dielectric Loss Angle (DLA)
Silcar provides the following tests:
Silcar Services
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colemanstudios.c
om.a
u
National Office Victoria
25 37 Huntingdale Road
Burwood, Victoria, Australia 3125
P (03) 9273 7600 F (03) 9017 1424
Email [email protected]
WA Perth Regional Office
Unit B, 2-10 Kewdale Road
Welshpool WA 6106
Telephone (08) 9351 7300
QLD Brisbane Office
Unit 1, 237 Fison Avenue West
Eagle Farm QLD 4099
Telephone (07) 3291 2433
High Voltage Technical Services Head Of fice
43 Saviges Road, Moe, Victoria, 3825
(PO Box 549)
P (03) 5122 4000
F (03) 9017 1444
www.silcar.com.au colemanstudios.com.au
Ownership
Silcars 50/50 shareholders are Siemens Ltd (a global leader in electricalengineering and electronics) and Thiess Pty Ltd (a leading integrated engineering
and services provider in Australasia and South East Asia).
Silcar Corporate Locations & Operations
With over 1,800 employees Australia-wide, Silcar services technically
complex assets using a nationally distributed support network to
ensure 24/7 maintenance support. Whether you require capital city
CBD site coverage, or cover for the remotest outback location, Silcar
can deliver your requirements.
Darwin
Cairns
Brisbane
Sydney
Hobart
Adelaide
Perth
Melbourne
Rockhampton
Silcar State Offices
Silcar Service Coverage
Canberra
New Caledonia