ZGLJ-B5
General
The system uses a monitoring device installed on the wall of the tower barrel to accurately monitor the surge current information passing through the tower barrel of the wind turbine in real time.
Lightning threatens the safe operation of wind turbines. Therefore, we need to accurately grasp the time, times, peak value of lightning current, polarity, current change rate, amount of charge and specific energy of wind turbines subjected to lightning strikes, so as to evaluate the effect of lightning protection facilities of wind turbines and provide basis for lightning protection design, transformation and insurance claim settlement in this area, Ensure the safe operation of wind turbine.
Operating Environment
| Power supply |
POE power supply |
| Temperature |
-40 ℃～70 ℃ |
| Relative humidity |
≤95 % |
| Atmospheric pressure and altitude |
86 kPa～106 kPa |
Product Configuration (Standard Configuration)
| Name |
Quantity |
| ZGLJ-B5 lightning monitor |
1 |
| ZGPOW-5W POE control box |
1 |
Performance Index
| Item |
Index |
| Monitored object |
Lightning occurrence time, peak value, polarity, times, current change rate, amount of charge and specific energy |
| Monitoring range of lightning peaks |
±1KA～±250 kA |
| Measuring error |
≤±10 % |
| Error in the front time and time to half value |
≤±10 % |
| Sampling frequency |
1 MHz |
| Waveform acquisition length |
1s |
| Storage capacity |
200 records |
| Communication interface |
RJ45 |
| Communication protocol |
Web management interface/Modbus TCP/FTP/ IEC 60870-5-104 |
| Waterproofing grade |
IP66 |
| Salt fog prevention grade |
C5H |
| Overall power consumption |
≤6W |
Standards Complied
Q/75875187-9·7—2016 Lightning monitoring system
GB 4208—2008 Degrees of protection provided by enclosure (IP code)
GB 4943.1—2011 Information technology equipment - Safety - Part 1: General requirements
GB/T 2423 series Electrical and electronic products environmental test
GB/T 17626 series Electromagnetic compatibility, test and measurement technology
Configuration
Working Principle
The ZGLJ-B5 lightning monitor integrates the lightning current sensor, the data processing unit and the communication unit. It uses a permanent strong magnet to stick the monitor on the surface of the wind turbine tower.
The surge current generated by the wind turbine when it is struck by lightning is discharged to the grounding system through the tower barrel. When the lightning surge current passes through the tower barrel of the wind turbine equipped with a lightning monitor, the sensor will send the induced lightning current signal Into the data processing unit. The data processing unit will collect, calculate and record the lightning current waveform, analyze and obtain the key lightning waveform parameters and store them in the internal memory. The user can read the monitoring information through the local WEB interface, or read the monitoring data through the Modbus TCP/FTP/IEC 60870-5-104 protocol.
The monitor adopts an Ethernet interface to realize data reading, transmission and POE power supply.
Functional Characteristics
4.1Real-time monitoring of lightning strike failures
Real-time recording of lightning strike time, peak lightning current, polarity, times, current change rate, charge and specific energy.
Large-capacity data storage
200 data records.
With data save in case of power failure, long-term monitoring can be realized to avoid data loss.
Alarm output
With the dry contact signal output interface of lightning strike counting, can be connected to the fan control system.
With the dry contact signal output interface of equipment power failure, can be connected to the fan control system.
Single-port POE power supply
One POE output, the maximum output power is 6.5W.
Built-in lithium battery, automatically switch when power is off.
With the function of restoring the factory IP for the device.
Equipment status monitoring
With equipment working status and key parameter monitoring, including acquisition channel status, communication status, equipment working temperature and other status and parameters in real time, with regular equipment self-checking function to ensure the effectiveness of equipment work.
Setting of working parameters
With equipment working parameter setting function, including trigger threshold, temperature collection time interval, self-check time interval and other parameter settings.
High-precision sensing technology
The non-contact high-precision transient current sensor is used for wide-band signal response, which can effectively sense the lightning signal.
High reliability
The requirements of GB/T 3783 are met, with strong anti-interference ability.
Built-in hardware watchdog circuit, so crash is never going to happen.
Power, signal and communication ports have surge protection functions to ensure reliable operation of the equipment.
The structure design process is exquisite and light in weight. With the multi-layer isolation and watertight materials, it is resistant to high temperature, shock, aging, corrosion and salt spray, and has the characteristics of maintaining normal function in harsh environment.
