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Integrated On-line Monitoring System for Transformer (Reactor) PD
Category: Product Center
Key words: equipment
Product Description
Product Introduction
The transformer (reactor) PD on-line monitoring system integrates vibration sensor, HFCT (high frequency PD sensor), AE (ultrasonic sensor), UHF (UHF PD sensor) and radio frequency PD sensor. The system can provide user guidance and analysis conclusions by comprehensively analyzing various dynamic operating data and static data, using fault assessment models and experience databases. The transformer (reactor) integrated monitoring system can provide interfaces for data interaction with the core and clamp grounding current monitoring system, winding optical fiber temperature measurement system, transformer neutral point grounding monitoring and other devices.
Functional features
◎ It has the function of automatic, continuous or periodic acquisition of state monitoring information such as ultrasonic partial release and high-frequency partial release of equipment, and transmits standardized data analysis results and early warning information to the comprehensive monitoring background, and receives down control commands;
◎ Have the time service function of each sensing unit;
◎ With partial discharge amplitude, unit time partial discharge times and other characteristic parameters real-time display function, support single parameter trend analysis, threshold and trend alarm, historical data query, report generation and other functions, support threshold setting, data call, parameter setting and other remote control functions;
◎ With partial discharge amplitude, partial discharge times per unit time, and other characteristic parameters can be configured, multi-parameter synchronous real-time display function, support multi-parameter trend analysis, evaluation and diagnosis, can realize customized early warning function;
◎ With a single monitoring parameter alarm, other monitoring parameters automatically shorten the sampling cycle and data upload cycle function;
◎ Have the system self-check function, and have the active alarm function when the device is abnormal.
Technical parameters of local monitoring host
| System function |
Technical indicators |
| Acquisition host |
i7,3.4GHz,8Mcache,14nm,65WPower consumption |
| HF and RF channel acquisition |
Support5Channel synchronization,100MS/ssampling rate; resolution14bit; Input range: ±2V;DCcoupling, 50Ω input impedance |
| ultrasonic channel acquisition |
Support12Channel synchronous acquisition,50kS/s,16-Bit |
| Vibration channel acquisition |
Support6Channel vibration signal acquisition,100kS/s Maxsampling rate; resolution12 bit±10V |
| Sensor |
Number of channels |
| Ultrasonic sensor |
12 |
| Vibration sensor |
6 |
| UHF PD sensor |
3 |
| HF PD sensor |
4 |
| Operating environment |
Technical indicators |
| Network Connection |
Electricity4Gwireless private network |
| Protection level |
IP55 |
| System power supply |
AC220V/50Hz |
| Power consumption |
300W(Air conditioning off),900W(Air conditioning on) |
| Working temperature |
-15℃~ 55℃ |
| Working humidity |
5%~95%RH |
| Cabinet material |
Spray treatment of cold-rolled plate for box body/Mounting plate2.5mmGalvanized sheet |
| Cabinet Dimensions |
600*600*1200mm |
Technical index of local discharge sensor unit
| Picture |
Model |
Main technical parameters |
|
UHF sensor unit |
LHJFTGP |
◎Amplitude-frequency characteristics: The bandwidth covers 200MHz ~ 1.5GHz, and the average effective height in this frequency band shall be ≥ 11mm, and the minimum effective height shall be ≥ 3mm; ◎Detection sensitivity: ≤ 7 V/m(17dBV/m); ◎Resistance dynamic range: 40dB; ◎Time deviation of different detection channels: ≤ 2us; ◎Input impedance: 50Ω ; ◎NType wood interface output. |
|
HFCT Sensing Unit |
LHJFGP |
◎3MHz~ 30MHz average transfer impedance: 10mV/mA; ◎3MHz~ 30MHz band range sensor bandwidth: 10MHz; ◎Minimum measurable partial discharge: 50pC; ◎When the dynamic range of partial discharge signal is 40dB, the detection linearity error is 15%; ◎The detection frequency can be adjusted in the range of 3MHz ~ 30MHz, and the suppression ability of narrow-band interference signal: 20dB ； ◎Sampling rate: 100 MS/s; ◎Time deviation of different detection channels: 2us. ◎MRLS-150/54 aperture: 54mm; ◎Frequency: up to 150MHz; ◎Installation method: open type. |
|
AE Sensing Unit |
LHJFCSB |
◎Resonant frequency: 140±20% RH; ◎Sensor peak sensitivity: 60dB(V/(m/s)), average sensitivity: 40dB(V/(m/s)); ◎Detection sensitivity: 40dB; ◎Sensor detection band range: 80~200kHz; ◎Dynamic range: 40dB; ◎Linearity error: ± 20%; ◎Amplitude deviation of different detection channels: ± 10%, time deviation: ± 5μs; ◎The relative standard deviation of 6 measurements shall be ≤ ± 5% after the sensor unit has been working continuously for 1 hour; ◎Input impedance: 50Ω. |
|
RF sensing unit |
LHJFSP |
◎Detection frequency range: 100MHz ~ 1000MHz; ◎Average effective height: ≥ 10mm; ◎Sampling rate: 100 MS/s. |
|
Vibration sensing unit |
LHJFZD |
◎Measurement range (peak-to-peak):0.1μm～400μmError ≤ 10%; ◎Vibration acceleration measurement range:-10g ~ +10g, error ≤ 10%; ◎Frequency response: 5Hz ~ 3000Hz, the relative error of frequency response should be ± 5%; ◎Sensor sensitivity: 100mV/g. |
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