Application
This lightning impulse voltage generator test system device is mainly applicable to the test and research of various standard waveforms of lightning impulse voltage of ≤36KV high and medium voltage distribution system electrical products and power equipment such as Switchgear,transformer,Insulator...
Woking condition
- Altitude ≤ 2000m
- Environment temperature: -15ºC~50ºC
- Relative humidity≤90%
- Installation place: indoor type, movable
- Good grounding point is necessary, ground resistance<0.5Ω
Test system includes following parts
| Sr no |
Description |
Specfication |
Qty |
| 1 |
Impulse voltage geneartor (Main body) |
|
|
| 1.1 |
Main capacitor |
1.5uF/100kV |
4 unit |
| 1.2 |
Modulation resistor |
20Ω~200Ω;1kΩ~3kΩ |
5 groups |
| 1.3 |
Charging & protection resistor |
20kΩ |
1 set |
| 1.4 |
Insulating support & material |
|
1 set |
| 1.5 |
High voltage connection board and mobile base |
|
1 set |
| 1.6 |
Ignition check and feedback signal device |
100kV |
1 set |
| 2 |
Automatic lightning impulse control system |
|
|
| 2.1 |
Lightining impulse control software |
|
1 set |
| 2.2 |
Auto impulse control |
|
1 pc |
| 2.3 |
Optical fiber conversion transmission circuit and optical fiber |
|
1 set |
| 2.4 |
FX2n-PLC |
Tech from Japan |
1 set |
| 2.5 |
Desktop computer |
|
1 set |
| 3 |
Safety grounding system |
|
|
| 3.1 |
Automatic electromagnet grounding system |
|
1 pc |
| 4 |
Automatic lightning impulse measurement and analysis system |
|
1 set |
| 4.1 |
TDS3012C High voltage color digital oscilloscope
|
Made in USA
2 channels
Accuracy 3%,
Record length:10k byte |
1 unit |
| 4.2 |
Good performance attenuator |
100 times |
2 pcs |
| 4.3 |
Measuring cable |
20m,75Ω |
2 pcs |
| 4.4 |
Isolattion filter power supply |
10kV |
1 set |
| 4.5 |
Operation desk |
|
1 set |
| 4.6 |
Special software for shock measurement and analysis |
1.0% |
1 set |
| 5 |
Automatic charging power supply |
|
|
| 5.1 |
Charging transformer |
100kV/5KVA/100mA |
1 unit |
| 5.2 |
Multi-voltage capacitor |
|
1 unit |
| 5.3 |
High voltage rectifier stack |
|
2 pc |
| 5.4 |
Electric grounding protection |
Electric drive mechanism |
1 set |
| 5.5 |
Charging protection resistor on the side of high voltage & low voltage |
Charging protection and charging monitoring |
1 set |
| 6 |
Lightning impulse capacitor voltage divider |
|
|
| 6.1 |
Weak damping impulse capacitive voltage divider |
400kV/800pF,1.0% |
1 unit |
| 7 |
Chopping device |
400KV |
|
| 7.1 |
Sphere gap |
|
2 units |
| |
Chopping wave resistance |
|
1 unit |
| 8 |
Transport and insurance |
Negotiation |
|
| 9 |
Installation and commissioning |
The quotation only includes commissioning & demo at factory. |
|
1. Impulse voltage generator (Main body: 400KV/30KJ)
-Main technical parameters
- Nominal lightning impulse voltage: 400kV
- Nominal capacity (energy): 30kJ
- Capacitance per stage: 1.5μF,100KV, dry fully insulated package
- Voltage per stage: ± 100kV
- Number of stages/ Capacity per stage: 4 /7.5KJ
- Output waveform:
- 1.2μs ±30% / 50μs±20% standard lightning impulse voltage full wave, efficiency ≥ 90%
- 250±20% / 2500±60%μs standard lightning impulse operating wave.
- Synchronization range: > 20%
- Duration of use:
< 80% rated voltage: working continously;
> 80% rated voltage: working intermittently
- Minimum output ≤10% rated voltage: error voltage difference of amplitude regulation < 1%:
- Synchronization malfunction rate: < 1%
- Base: 2.6m × 1.5m, caster moving.
- Height: About 1.5m. Weight: about 800kg
-Structure of main body
- The main circuit design of SGS series of HAEFELY from Switzerland is adopted, so as to realize the overall super small size.
- The low-speed rack and pinion transmission mechanism
with one revolution per minute is adopted to adjust the
ball clearance at all levels, which not only has no noise
and little wear, but also has fast and accurate positioning.
- The fixed mechanism of wave adjusting resistor with spring crimping and convenient plug-in is adopted to ensure the reliability of contact and make the output waveform smooth without burr.
- Pulse amplifier control system, the trigger range of synchronous ball gap can be more than 20%, which ensures the reliability of trigger, and the automatic control is convenient and reliable.
- Triggering of synchronous ball gap has no polarity effect, and it does not need bilateral triggering.
-Main capacitor
- It adopts high-density solid capacitor, the capacitance of each capacitor is 1.5μ F, and the DC working voltage ± 100 kV. The capacitor has small intrinsic inductance, light weight and small volume, which is the first in China.
- The concave convex deformation of capacitor is less than 1 mm under normal working condition and working environment.
- The capacitor is packaged with solid insulation medium and shell dry insulation, without oil leakage and deformation.
-Wave modulator
- The resistances of wave head and wave tail have enough heat capacity to ensure long-term continuous operation of generator.
- The charging resistor has enough thermal capacity to ensure the generator to operate continuously for a long time.
- The resistance of wave head and wave tail adopts plate structure, which is made of Kang copper wire without induction. The external part is made of insulating resin vacuum casting. The joint is of spring compression type, which is easy to install.
- The connector of wave head and wave tail resistance is made of 3mm stainless steel wire cutting.
- There are 5 groups of wave head resistance and 5 groups of wave tail resistance for lightning impulse, and 1 group of charging resistance and protection resistance.
-Automatic impulse intelligent control system
The full-automatic control system provides various controls for the main part of the impulse voltage generator, and fully meets the various control functions of the impulse test. The control system adopts imported devices, and the connection with the main body of the equipment adopts two core optical cable.
- We used the core device of the auto control system from the FX2N series programmable controller of Mitsubishi company in Japan, so the size of the controller is very small, and the controller can realize manual control and automatic control. The special software package can be used for computer control to realize intelligent operation. The special software package can be used together with peak voltmeter and oscilloscope for measurement and waveform analysis to realize the integration of computer measurement and control of impulse voltage test system.
- Control system has the following control functions:
-Using PLC technology, using two core optical fiber to transmit control commands and feedback equipment
status, thus avoiding electromagnetic interference and improving the safety of control system and computer.
-Control function has manual, automatic and program control functions. The functions of each level are
relatively independent to ensure the reliability of the system.
-Thyristor voltage regulation mode is adopted, and the charging voltage feedback measurement system is provided.
-Distance between ignition ball gap and chopper ball gap can be adjusted manually and automatically, and displayed on LCD panel.
-It also has the feedback system of the generator ignition trigger.
-Stability of charging voltage can reach 0.5% by using function control constant current charging mode.
-LCD panel can indicate the charging voltage and charging process of the impact generator with an accuracy of 1%.
-Charging voltage and charging time can be input directly by LCD panel.
-It has the function of abnormal charging protection, and can send trigger ignition pulse automatically or manually.
-Indication of the working state of the impulse generator, such as spontaneous combustion, non triggering,
abnormal charging, stable charging, etc.
-Grounding and grounding release control of equipment body and charging part.
-The polarity of charging voltage can be automatically changed through the button on the controller
-The charging process of charging voltage can be controlled automatically or manually
-Alarm automatically or manually
-It has over-current and over-voltage automatic protection
-Isolation filter shielding design
- The first stage of synchronous ball gap is triggered by three electrode ball gap, and the trigger range is more than 20%.
- Safety grounding system
-Electromagnet automatic grounding mechanism is used to ground the first stage capacitor of generator through a grounding resistance.
-Grounding operation and charging control have interlock protection to ensure safe and normal operation.
2.Automatic digital impulse measurement system
- Waveform test: TDS3012C digital oscilloscope
Max. sample rate 1.0GS/s, 100MHz bandwidth,
resolution 8bit
Record length 2.5K byte, 2 channels
- Waveform analysis:
-Industrial control computer (including display screen)
-Special software package for impulse measurement:
-Calculation and display of shock wave parameters
-Waveform comparison function
-Amplification, reduction and translation of waveform
-Storage and calling of waveform
-Waveform mapping and report writing
3. Auto charging power supply (Together with main body)
- Specification: 100KV/5KVA/100mA
- Rated voltage: Un = ±100kV DC (Positive or negative polarity)
- Rated current: In = 100mA (Under rated voltage)
- Voltage control: Controllable constant current charge, regulate range 0~100% Un
- Polarity conversion: Auto convert path of high voltage silicon stack
- Input voltage: 220V, single-phase
- Frequency: 50/60Hz
- Power supply capacity: 5kVA
- power supply resistance: 1 set
4. Weak damping capacitive voltage divider
- Specification: 400kV/800pF
- Rated voltage: 400kV
- Rated capacitance: 800pF
- Stage of capacitor: 1 stage
- Capacitance per stage: 800pF
- Square wave response: Partial response time is less than 100ns, overshoot is less than 10%
- Divider ratio: as per the actual situation
- Voltage division uncertainty: Less than 1.0%
5. Chopping device
- Rated Voltage: 400kV
- Sphere gap type: Diameter 300mm hemisphere gap
- Time delay mode: 2-6us time delay adjustable circuit provide chopping trigger pulse.
- Chopping wave dispersibility: Chopping wave time standard error is less than 0.1us.
- Sphere gap Qty: 2 pcs
- chooped wave resistance 1 pc
Advantage
1.SGS generator voltage of 100kV is the best, which is in line with the current development trend at home and abroad. The main structure adopts the structure design of the world famous company haefly, which is the most compact generator in China at present, with the characteristics of small inherent inductance and convenient wave modulation.
2.The control and measurement system adopted in the scheme is the leading product in domestic technology, the core device is FX series programmable controller of Mitsubishi company of Japan, almost all control functions are realized by software programming, so the system structure is simple, the peripheral circuit board is very few, and the reliability is very high.
3.The measurement and control structure of the scheme is integrated with an industrial computer with liquid crystal display, which can realize automatic control, measurement and analysis. The measurement and control system uses LCD touch screen operation, with a variety of status prompt screen, to realize the intelligent operation of man-machine dialogue. The system cancels the multi-core control cable, uses the optical fiber communication line, does not need to open the cable trench, makes the control room layout more simple and convenient.
4.The optical fiber control transmission system adopted in the scheme is the first one among the domestic high-voltage test equipment. It realizes the optical fiber connection between the control measurement equipment and the high-voltage main equipment, effectively solves the harm of the ground potential elevation in the high-voltage test to the measurement and control system, eliminates the electromagnetic interference caused by the control lead, and greatly improves the reliability of the system, especially in the process of cutting The safety is better in wave and steep wave shock tests.
5.The operation interface of igcs-2008 control and measurement system adopted in the scheme
fully considers the habitual characteristics of high-voltage test, which is simple and clear, and is convenient for the test personnel to operate. Special program operation screen is designed in the system, which is convenient for full wave and cut-off wave test of transformer, greatly simplifies the operation of test personnel, and can effectively prevent human error.
6.The impulse voltage generator test system adopts the most advanced technology, good technology and high-quality raw materials, which can ensure long-term use, and the service life is more than 20 years. The operating cost is also very low.
Standard
- IEC 60060-1
- IEC 60076-3
- IEC 62271-1
- IEC 62271-200
- Test transformer (JB / T9641-1999)
- GB1094-2003 power transformer
- GB / T509-1997 power transformer test guide
- DL / T596 / 1996 code for preventive test of electric power equipment
- GB311.1-1997 insulation coordination of high voltage transmission and transformation equipment
- GB / T16927.1-1997 high voltage test technology general test requirements
- GB / T16927.2-1997 high voltage test technology measurement system
- Digital recorder for high voltage impulse test
- ZB F24 001-90 implementation rules for impulse voltage measurement
- GB191 packaging and transportation marks
- JB / T563 technical conditions for ordering coupling capacitors and capacitor voltage dividers
- GB4208 enclosure protection level
- GB813-89 oscilloscope and peak meter for impact test
- GB7449-87 test guide for lightning impulse and operation impulse of power transformers and reactors
- JB / T501 power transformer test guide
- Transformer test technology (JB / t501-1991)
- IEC60-1 and IEC60-2 high voltage test technology
- GB50150-91 standard for hand over test of electrical equipment in electrical equipment installation engineering
- DL / t557-94 high voltage line insulator steep wave impact test, definition, test method and criteria
- DL / T 848.5-2004 general specification for high voltage test equipment Part 5: impulse voltage generator
- DL / T 846.1-2003 general specification for high voltage test equipment Part 1: high voltage divider measurement system
- DL / T 846.2-2004 general specification for high voltage testing equipment Part 2: impulse voltage measuring system
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