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AC resonance PD free test system

交流谐振无局放测试系统主要用于电力电缆、电力变压器、高压互感器、高压开关等电力产品试验;试验内容包括交流耐压试验、局部放电试验、电力设备老化试验。

Series resonance system adopts this feature: capacitive object is with stored energy. This application results in obvious saving in cost. This system application conforms to XLPE cable power frequency voltage test and PD test requirement, and is suitable for PD test, voltage test and PD fault location test for XLPE cables before leaving factory. And other power products test.
The system is called series resonance PD test system, including regulatable reactor (inductance). The inductance can be changed to best point according to capacitance of tested object. When capacitance and inductance matches at the best point, it is called resonance. This is with advantage compared with traditional test transformer.
Bigger reactor power (ineffective power) output with very low actual power input;
After output filtered, output waveform distortion ratio is 0.5% lowered than total resonance wave distortion;
When tested object fault happens, fault current generated in power loop will be deleted, and the fault point damage is the lowest;
The operation mode is controllable resonance status, so accidental resonance will not happen, while this happens to traditional power frequency test transformer when doing capacitive load test.

  • 产品描述
  • 左上角内容
  • Working condition

    ● Maximum altitude:1000m ● Altitude 100 m increase voltage rate lowered:1%
    ● Ambient Temperature for HV component operation:3˚C ~ +45˚C ● HV component relative humidity (non-condensing):95%
    ● Temperature range of electronic components operation:10˚C ~ +45˚C ● Relative Humidity of electronic components:80%
    ● Transport & storage temperature:20˚C ~ +60˚C ● Anti-seismic:8 grade
    ● Grounding resistance:< 1.0Ω ● Operation environmentNo dust

     

     

    Main technical parameter

     

    ● Rated voltage:100kV~1500kV(and above) ● Rated energy:300kVA ~ 30000kVA( and above ) ● Noise: 75dB( 2 meters away from;equipment )
    ● Q value:Q≥20 ~ 100 ● PD:80% voltage PD ; 2pC (Or we design as per customer requirement) ● Load:under rated capacity, 1 hour on,1 hour off, 3~6 times per day; under 50% capacity, continuous. Operation (Or we design as per customer requirement)

     

    System components

     

    ● YKTY – Series HV resonance reactor: 1set ● CIC - series correction injection capacitors:1set ● EXC – Series Exciting transformer:1set
    ● JFD/XPD – Series Digital PD detector:1set ● DSIT – Series double shielded isolation transformer:1set ● LVF – Series LV filter:1set
    ● HVF – Series high voltage filter:1set  ● TDGZ – Series contact regulator:1set  ● JTKZ – 5 Series digital control desk: 1set

     

    HV resonance reactor:

    At present we have two structures of HV resonance reactor:

    YKTY — Tank type:voltage 5kV-350kV / capacity 100kVA-15000kVA;Adopt this structure

    YYKTYC — Epoxy barrel type:voltage 150kV-1500kV / capacity 100kVA-30000kVA ;Adopt this structure

     

    YKTY-Series reactor

    The HV resonance reactor is main component of the system. It forms series resonance loop with cable capacitance. When inductance of reactor equals the capacitance of cable, resonance is achieved, and system can output high voltage.
    The reactor adopts transformer oil for insulation. It is put in a steel tank. It is made of silicon steel, with iron core inside. The iron core is made of two U shaped devices. The gap between two U shapes can be changed by precise roller screw, thus inductance of reactor is changed with range of 20:1. The above design ensures low dissipation, high quality factor, small partial discharge of reactor.

    Parameters (for cables upto 220kV)

    Rated capacity: 12250kVA 28000kVA 52500kVA
    Rated voltage: 350kV 700kV 1050kV
    Rated current: 35.0A 40.0A 50.0A
    Rated frequency: 50-60Hz
    PD level: 100% rated voltage ≤ 5.0PC 80% rated voltage ≤ 2.0PC
    Load capacity: 1 hour on, 1 hour off under rated capacity, 3 ~ 6 times one day
    Q value (design): 40-100
    Reonance distortion: < 3%
    Load capacitance range: 15.92-318.4 nF 31.85-636.9 nF 7.96-159.2 nF
    Gap regulation mechanic device: Adopt precision ball screw mechanical transmission mechanism to adjust gap
  • Series resonance system adopts this feature: capacitive object is with stored energy. This application results in obvious saving in cost. This system application conforms to XLPE cable power frequency voltage test and PD test requirement, and is suitable for PD test, voltage test and PD fault location test for XLPE cables before leaving factory. And other power products test.
    The system is called series resonance PD test system, including regulatable reactor (inductance). The inductance can be changed to best point according to capacitance of tested object. When capacitance and inductance matches at the best point, it is called resonance. This is with advantage compared with traditional test transformer.
    Bigger reactor power (ineffective power) output with very low actual power input;
    After output filtered, output waveform distortion ratio is 0.5% lowered than total resonance wave distortion;
    When tested object fault happens, fault current generated in power loop will be deleted, and the fault point damage is the lowest;
    The operation mode is controllable resonance status, so accidental resonance will not happen, while this happens to traditional power frequency test transformer when doing capacitive load test.

AC resonance PD free test system

DIELEC has more than 30 years history for applying high quality Q series resonance test. The test system components and capacitive tested object composes the resonance loop. The reactor inductance can be regulated. When reactor inductance and load capacitance is equal, resonance happens. At this time the reactor generates high voltage.

产品系列: CABLE SYSTEM PRODUCTS

  • 产品描述
  • 左上角内容
  • Working condition

    ● Maximum altitude:1000m ● Altitude 100 m increase voltage rate lowered:1%
    ● Ambient Temperature for HV component operation:3˚C ~ +45˚C ● HV component relative humidity (non-condensing):95%
    ● Temperature range of electronic components operation:10˚C ~ +45˚C ● Relative Humidity of electronic components:80%
    ● Transport & storage temperature:20˚C ~ +60˚C ● Anti-seismic:8 grade
    ● Grounding resistance:< 1.0Ω ● Operation environmentNo dust

     

     

    Main technical parameter

     

    ● Rated voltage:100kV~1500kV(and above) ● Rated energy:300kVA ~ 30000kVA( and above ) ● Noise: 75dB( 2 meters away from;equipment )
    ● Q value:Q≥20 ~ 100 ● PD:80% voltage PD ; 2pC (Or we design as per customer requirement) ● Load:under rated capacity, 1 hour on,1 hour off, 3~6 times per day; under 50% capacity, continuous. Operation (Or we design as per customer requirement)

     

    System components

     

    ● YKTY – Series HV resonance reactor: 1set ● CIC - series correction injection capacitors:1set ● EXC – Series Exciting transformer:1set
    ● JFD/XPD – Series Digital PD detector:1set ● DSIT – Series double shielded isolation transformer:1set ● LVF – Series LV filter:1set
    ● HVF – Series high voltage filter:1set  ● TDGZ – Series contact regulator:1set  ● JTKZ – 5 Series digital control desk: 1set

     

    HV resonance reactor:

    At present we have two structures of HV resonance reactor:

    YKTY — Tank type:voltage 5kV-350kV / capacity 100kVA-15000kVA;Adopt this structure

    YYKTYC — Epoxy barrel type:voltage 150kV-1500kV / capacity 100kVA-30000kVA ;Adopt this structure

     

    YKTY-Series reactor

    The HV resonance reactor is main component of the system. It forms series resonance loop with cable capacitance. When inductance of reactor equals the capacitance of cable, resonance is achieved, and system can output high voltage.
    The reactor adopts transformer oil for insulation. It is put in a steel tank. It is made of silicon steel, with iron core inside. The iron core is made of two U shaped devices. The gap between two U shapes can be changed by precise roller screw, thus inductance of reactor is changed with range of 20:1. The above design ensures low dissipation, high quality factor, small partial discharge of reactor.

    Parameters (for cables upto 220kV)

    Rated capacity: 12250kVA 28000kVA 52500kVA
    Rated voltage: 350kV 700kV 1050kV
    Rated current: 35.0A 40.0A 50.0A
    Rated frequency: 50-60Hz
    PD level: 100% rated voltage ≤ 5.0PC 80% rated voltage ≤ 2.0PC
    Load capacity: 1 hour on, 1 hour off under rated capacity, 3 ~ 6 times one day
    Q value (design): 40-100
    Reonance distortion: < 3%
    Load capacitance range: 15.92-318.4 nF 31.85-636.9 nF 7.96-159.2 nF
    Gap regulation mechanic device: Adopt precision ball screw mechanical transmission mechanism to adjust gap
  • Series resonance system adopts this feature: capacitive object is with stored energy. This application results in obvious saving in cost. This system application conforms to XLPE cable power frequency voltage test and PD test requirement, and is suitable for PD test, voltage test and PD fault location test for XLPE cables before leaving factory. And other power products test.
    The system is called series resonance PD test system, including regulatable reactor (inductance). The inductance can be changed to best point according to capacitance of tested object. When capacitance and inductance matches at the best point, it is called resonance. This is with advantage compared with traditional test transformer.
    Bigger reactor power (ineffective power) output with very low actual power input;
    After output filtered, output waveform distortion ratio is 0.5% lowered than total resonance wave distortion;
    When tested object fault happens, fault current generated in power loop will be deleted, and the fault point damage is the lowest;
    The operation mode is controllable resonance status, so accidental resonance will not happen, while this happens to traditional power frequency test transformer when doing capacitive load test.