I. Product Overview
The device is mainly used for 110kV, 220kV cable and power system,power system 500kV circuit breakers, GIS, insulators, AC voltage busbar test design and manufacture. The reactor has many separate designs, which can meet the requirements of the test conditions of high voltage and small current. It is the ideal pressure equipment for the high pressure test department of the city, the city and the county, and the power installation and repair engineering units. The device consists of a variable frequency control power supply, an exciting transformer, a high voltage reactor and a capacitive voltage divider.
This device is fourth generation AC voltage withstand resonance test device upgraded by our company's experience and market feedback. It is different from the previous equipment. It has low sensitivity and low input power, and the input power can only be selected individually. The fourth generation of resonance AC voltage withstand test device interface with a 32 bit RISC CPU and simplified LINX kernel, 7 Inch Touch screen color graphics format, test the resonant frequency curve, boost curve, curve display timing, high voltage, low voltage, high current current RMS digital feedback to the interface, the calculation of the resonant frequency, sample the calculation results, the resonant capacitor has the function of protection, low voltage current, high voltage, flashover voltage protection function is more sensitive, the biggest advantage is not affected by the input power limits of 220V and 380V are used as the working power supply equipment. At present, the only use of mobile terminal LAN control platform in China can be connected with the mainstream intelligent mobile devices of Android, IOS and windows systems. It can realize remote control and remote control of the equipment, and can realize the monitoring and inquiry of the result of the test process on the mobile device, and reduce the labor intensity of the field test personnel.
II.Subject object to be tested
1.Meet AC withstand voltage test of 110kV/630mm2 cable 3Km AC, capacitance≤0.603uF, Test frequency: 30-300Hz; Test voltage:128kV, Test time:60min.
2. Meet AC withstand voltage test of 220kV/630mm2 cable 1.2km AC, capacitance ≤ 0.1728uF, test frequency:30-300Hz test, test voltage:216kV, test time:60min.
3. Meet 500kV power system, power transformer, transformer, insulator, wall busbar, GIS, circuit breaker, AC withstand voltage test frequency:45-65Hz, suitable for the sample capacitance ≤0.0215uF, the maximum test voltage:740kV, test time 60min.
4. Meet 110kV power system, power transformer, transformer, insulator, wall busbar, GIS AC voltage withstand test frequency 45-65Hz, the maximum test voltage 265kV.
5. Meet 220kV power system, power transformer, transformer, insulator, wall busbar, GIS AC voltage withstand test frequency:45-65Hz, the maximum test voltage 495kV.
III.working condition
1.Temperature：-15°C - 45°C;
2.Humidity：≤90%RH;
3.Altitude: ≤ 2500M；
IV. Equipment adheres to standards
GB501502006 "electrical device standard for hand over test of electric equipment installation engineering"
DL/T474.4-2006 "guide for implementation of field insulation test - AC withstand voltage test"
DL/T596-1996 "regulation of preventive test for electric power equipment"
GB/T16927.1-2-1997 "high voltage test technology"
DL/T1015 "guidelines for the use of on-the-spot DC and AC voltage test voltage measurement systems"
GB/T311.1-1997 "insulation and coordination of high voltage transmission and transformation equipment"
GB10229-1988 "reactor"
GB1094.3-2003 "power transformer"
GB191-2000 "package storage and transportation graphic sign"
JB/T9641-1999 "test transformer"
IEC 358 (1990) "coupling capacitor and capacitance divider"
GB4793-1984 "safety requirements for electronic measuring instruments"
GB/T3859.2-1993 "guidelines for application of semiconductor converters"
GB/T2423.8-1995 "basic environmental test rules for electrical and electronic products"
DL/T849.6-2004 "general technical conditions for special test instruments for electric power equipment,the sixth part: high voltage resonance test device
V.Parameters of Full System
- Rated Capacity: 4000kVA;
- Output Rated Voltage: 800KV
- Rated current: 5A;
- Output frequency: 30-300Hz;
- Input Power: 220V single phase /380V three phase, 50Hz;
- Waveform distortion rate: output voltage distortion ≤ 1%;
- Working time: continuous 60 minutes under rated load;
- Sine wave output waveform
- Quality factors: Q ≥ 30 (f=45Hz);
- Stability: Over-current/over-voltage/Flashover protection;Auto Time;Touch Screen;
- Accuracy: RMS 1.5
VI.Capacity determination
1) 110kV 630mm2，3km AC cable withstand voltage testing.
Max capacitance ≤ 0.603μF,
test frequency 30-300Hz, test voltage <128kV.
The frequency. Selecting 40Hz
Current(I)=2πfCU试=2π×40×0.603×10-6×128×103=19.3A
Inductance(L)=1/ω2C=26.28H
2) 220kV 630mm2，1.2km AC cable withstand voltage testing.
Max capacitance ≤ 0.1728μF,
test frequency 30-300Hz, test voltage <216kV.
The frequency. Selecting 40Hz
Current(I)=2πfCU试=2π×40×0.1728×10-6×216×103=9.3A
Inductance(L)=1/ω2C=91.7H
3) 500KV electric power system, power transformer, transformer, insulator, wall busbar, GIS, circuit breaker, AC withstand voltage test.
Max capacitance ≤ 0.0215μF,
test frequency 45-65Hz, test voltage <740kV.
The frequency. Selecting 50Hz
Current(I)=2πfCU试=2π×50×0.0215×10-6×740×103=4.99A
Inductance(L)=1/ω2C=471.7H
According to the items mentioned above, the inductance can be designed as 4 pieces of Reactor, which can be combined in series or in parallel to complete the test requirements, then single reactor should be 1000kVA/200kV/5A/120H
Verification:
1.110kV，630mm2，3km AC withstand voltage testing
1) 110kV，630mm2，3km AC withstand voltage testing,max capacity 0.603μF, test frequency is 30-300Hz, test voltage 128kV.
2)4 reactors in parallel,then the inductance is (120/4) =30H
3)Test frequencyf=1/2π√LC=1/(2×3.14×√30×0.603×10-6) = 37.4Hz
4)Test current I=2πfCU试=2π×37.4×0.603×10-6×128×103 = 18.14A
2.220kV，630mm2，1.2km AC withstand voltage testing
2) 110kV，630mm2，3km AC withstand voltage testing,max capacity 0.1728μF, test frequency is 30-300Hz, test voltage 216kV.
2)4 reactors 2 in series and 2 group in parallel,then the inductance is (120*2) /2=120H
3)Test frequencyf=1/2π√LC=1/(2×3.14×√120×0.1728×10-6) = 34.9Hz
4)Test current I=2πfCU试=2π×34.9×0.1728×10-6×216×103 = 8.2A
3.500KV power system, power transformer, transformer, insulator, wall busbar, GIS, circuit breaker, AC withstand voltage test.
1)max capacity 0.0215μF, test frequency is 45-65Hz, test voltage 740kV.
2)4 reactors in series connection,then the inductance is (120*4) =480H
3)Test frequencyf=1/2π√LC=1/(2×3.14×√480×0.0215×10-6) = 49.56Hz
4)Test current I=2πfCU试=2π×49.56×0.0215×10-6×740×103 = 4.95A
Summary: the device’s capacity is confirmed as 4000kVA/800kV; 4 reactors conneciton, and each reactor1000kVA/200kV/5A/120H , which can meet the test requirements.
VII. Equipment configuration
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Equipment combination
DUT
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Reactor
1000kVA/200kV 4units
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Excitation transformer output
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110kV，630mm2，3km AC cable
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4 Reactors in parallel
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6 kV
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220kV，630mm2，1.2km AC cable
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2 Reactors in series and 2 group in parallel
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12 kV
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110 kVpower system, power transformer, transformer, insulator, wall busbar, GIS
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2 Reactors in series
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12 kV
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220 kVpower system, power transformer, transformer, insulator, wall busbar, GIS
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3 Reactors in series
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12 kV
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500 kVpower system, power transformer, transformer, insulator, wall busbar, GIS
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4 Reactors in series
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36 kV
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VIII.System technical parameters
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Sr
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Description
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Speicifcation
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Qty
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Unit
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1
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Excitation Transformer
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JLB-200kVA/6kV12kV/36kV/0.2kV/0.4kV
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1
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Set
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2
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Control unit
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CHXB-F-200kW/0.22/kV/0.38kV
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1
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Set
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3
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HV Reactor
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DK-1000kVA/200kV
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4
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Set
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4
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Capacitance Divider
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FCR-800kV/750pF
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1
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Set
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5
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Connection Cables
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1
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Set
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6
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Insulation Support
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1
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Set
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1. Control unit :
1.1 Technical parameters
1.1.1 Power rating: 200KW ;
1.1.2 Input voltage: 220V/380V ±10%, power frequency 50Hz;
1.1.3 Output voltage: 0 ~ 400V, single phase
1.1.4 Output voltage frequency: 30 ~ 300Hz
1.1.5 Rated output current:500A
1.1.6 Rated input current: 303.8A
1.1.7 Voltage resolution: 0.01KV
1.1.8 Voltage test accuracy: ±0.5%
1.1.9 Frequency Resolution: ≤0.1 Hz
1.1.10 Frequency Stability: 0.1%
1.1.11 Working time: 60 mins continous
1.1.12 Components highest temperature under 60 mins continuous working at rated capacitance:
≤ 65K ,
1.1.13 Noise level: ≤ 50dB
1.2 Advantage:
1.2.1 Placed way: the placement of variable frequency power for longitudinal and transverse, especially suitable for field operation and observe.
1.2.2 Shockproof protection: internal and external have special damping rubber support foot and protect aluminum boxes, which can effectively slow motion and lifting the bumpy transport the shock. Ensure the inverter power long-term stability and reliability.
1.2.3 Parameter display: touch or external mouse LCD interface display system.
Can show resonance voltage (namely test before setting goals voltage), test frequency, measure frequency, low-pressure voltage, low voltage electric current, voltage time, over-voltage protection, over-current protection, flash winding protection, phase booster and stage timing, operation mode switch, capacitor, inductance, frequency swap calculation, parameters, still can show inquiry on frequency curve, voltage curve can intuitivey judgment when trials resonance frequency accurately and stability.
1.2.4 Parameter Settings: big screen touch LCD backlit and external mouse directly in completing various parameters Settings. But on the initial frequency, termination frequency, starting voltage, phase booster and timing, measuring bleeder variable ratio, incentive change ratio, over-voltage protection, over-current protection, flash winding protection, test mode, capacitance inductance frequency swap calculation, parameter setting tips, and help parameters Settings or choice.
1.2.5 Test mode: touch screen and external mouse operation, there is automatic and semi-automatic, manual three operating status. With pressor, tuning (including manual, automatic), subsection pressurized and timing, running status, pattern switching, troubleshooting tips, capacitance inductance frequency swap computing functions, etc.
1.2.6 Protection function and information clew: having high-pressure over-voltage protection, low-pressure over-current, over-current protection, as well as detuning protection, zero, shem winding protection, emergency stop, undervoltage protection multiple protection function.
1.2.7 Data storage function: test results preservation, print, upload, back to check, etc.
A, Test results: manual or automatic test is finished, the interface of the test results can show trial, when test detailed parameters, may indicate a dramatic disruption interrupt state. Can be stored in memory, the parameters of the memory for non-volatile memory, can save 50 times test records.
B, Data query: but will have saved the test results data displayed on the screen. Also has USB interface, can print or using equipment data output carried by playing printing machine to print.
1.2.8 Automatic voltage function: system according to the test voltage or manually set of automatic tracking and boost results, stable test voltage, voltage stability can amount to 1.0%.
1.2.9 FM range and frequency resolution all can set: FM range set:30～300Hz、45～100Hz、200-300Hz, on-demand setting, can accelerate tuning process; The frequency resolution, according to the needs, presetting 0.1 Hz, 0.2 Hz, 0.5 Hz, or 1.0 Hz, efficiency and tuned in tuned balance between accuracy obtained optimization.
10.Frequency adjustment is divided into thick harmonic fine tuning, and automatic resonant point, guarantee for trials in the whole experiment resonant frequency process does not happen drift.
2. Excitation Transformer
The exciter is fully insulated, copper wire and cold rolled silicon steel plate. The transformer uses a double loop, a low voltage input coil and a high voltage output coil. Between low pressure and high pressure, low pressure and iron core, electrostatic shielding. Magnetic coupling between high and low windings
and no electrical connection.
- Rated capacity: 200kVA;
- Input voltage: 200V/400V, single phase;
- Output voltage :6KV, 12KV, 36KV;
- Output current:33.3A；16.7A；5.5A
- Frequency:30-300Hz;
- Resistance voltage: ≤10％
- Noise: ≤60dB
- Working time: 60mins continous
- Cooling: ONAN
- Structure: Oil-immersed Transformer,
- Weight: about 1000kg;
- Size: L（950mm）×W（750mm）×H（1200mm）
- Hoisting method: hoist + hook + rolling wheel
3. HV Reactor
The iron core is enclosed in the design of cold rolled silicon steel plate, with a heat conduction air gap and a copper wire in the winding. It is oil saturated self cooling. The outer cover uses an insulated epoxy resin barrel; the power and mechanical strength are solid. Heat dissipation is good; sufficient oil expansion and lower cover and flange are non magnetic. Aluminum alloy material is used in pressure sharing ring, and reactor is reliably connected in series or in parallel connection.
- Rated Capacity: 1000kVA;
- Rated voltage: 200kV;
- Rated current: 5A;
- Inductor:120H/each section
- Quality factor: Q ≥ 30 (f=45Hz)；
- Structure: Oil-immersed Transformer
- Frequency:30-300Hz;
- Temperature raising: ≤65K
- Noise: ≤60dB
- Working time: 60mins continous
- Cooling: ONAN
- Structure: Oil-immersed Transformer,
- Weight: about 1200kg;
- Size:Φ（950mm）×H（1200mm）
- Hoisting method: hoist + hook + rolling wheel
4. Capacitor Divider
- Rated voltage: 800KV
- High-voltage capacitance: 750pF
- Dielectric loss: tgσ ≤ 0.5%;
- Structure: Oil-immersed Transformer
- Frequency:30-300Hz;
- Temperature raising: ≤65K
- Noise: ≤60dB
- Working time: 60mins continous
- Cooling: ONAN
- Structure: Oil-immersed Transformer,
- Weight: about 200kg;
- Size:Φ（200mm）×H（1200mm×4）
- Hoisting method: hoist + hook + rolling wheel
IX. Accessaries
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Sr
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Description
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Qty
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Unit
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1
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Calibration report
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1
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PC
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2
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Operating manual
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1
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PC
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3
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Connecting cables
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1
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SET
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0.1Hz VLF AC/DC Hipot tester
