Intelligent monitoring terminal for arrester working condition
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Lightning damage is one of the main factors affecting the safety of power grid operation. Due to the low insulation level of the distribution network system and generally no lightning protection wire, lightning strikes are particularly prominent. At present, as the main means of lightning protection in distribution networks, lightning arresters are widely used in distribution lines and distribution transformers. In areas where lightning activities are relatively frequent, the failure rate of arresters has remained high. Faced with the large quantity and wide distribution of arresters, it brings huge manpower and economic pressure for power outage maintenance and troubleshooting. For this reason, our company has specially developed a lightning arrester working condition Internet of Things monitoring system.
This monitoring unit has passive wireless (no external power supply, wireless transmission), low power consumption, GPS positioning, comprehensive lightning current parameter monitoring: peak value, effective value, wave head, duration, energy, frequency and other related parameters. Through the synchronous detection of time, environmental parameters, and electrical parameters of the arrester, the use of big data and neural network algorithms to effectively eliminate the impact of environmental factors such as pollution, temperature, humidity, and interphase capacitance, coupled with multiple international and industry standards such as Qrs, impact times, leakage current and other international and industry standards, it can effectively predict and judge the working conditions of the arrester, and realize the pre-judgment repair and accurate fault alarm in management.
Product function
1 | Full parameters | Real-time monitoring of leakage current, lightning times, time, peak value, effective value, wave head, duration, energy, frequency and other parameters. |
2 | Self-powered | Product integrates solar panel + lithium battery |
3 | Self-monitoring | Monitor the internal battery power, solar charging current, and self-power consumption of the product. |
4 | Remote setting | The lightning current alarm threshold and leakage current alarm threshold can be set remotely. |
5 | Remote upgrade | The firmware of the acquisition unit can be upgraded remotely |
6 | Synchronization detection | With synchronous monitoring function of time, temperature and humidity |
7 | Fault location | With GPS positioning function, accurately determine the location of the fault |
Main Specifications
1 | Measurement error | 10% |
2 | Input signal | Lightning current: 300A～20kA Leakage current: 100mA |
3 | Power supply | 6V 1.5W solar,battery 2000maH |
4 | Output signal | NB-IOT+GPS |
5 | Linear range | 0～120% |
6 | Number of acquisition channels | One way lightning current, one way leakage current |
7 | Power consumption | Send 200mA, standby 4mA |
8 | Protocol | MODBUS protocol |
9 | Operating temperature | -20℃～+60℃ |
10 | Working humidity | Not more than 95% (temperature 30℃, no dew) |
11 | Dimensions | See Figure 1 for details |
12 | Shell material | metallic material |
13 | Support frequency band | Band1/2/3/5/8/12/13/17/18/19/20/25/26/28/66/70 (currently only the Band5 frequency band is open for the product) |
14 | Bandwidth | 100bps～100Kbps |
15 | Transmit power | ＜23dBm±2dB |
16 | Acceptance sensitivity | ＜-139dBm±1dB |
17 | Network protocol | COAP protocol |
18 | Platform | Telecom AEP platform |
19 | Synchronization detection | It has the function of synchronous monitoring of time, temperature and humidity. |
20 | Remote setting | The lightning current alarm threshold and leakage current alarm threshold can be remotely set through the SSET cloud platform |
21 | Remote upgrade | The firmware of the acquisition unit can be upgraded through the telecom AEP platform |
CE-AL12-5THT2-1.0
Appearance and Dimensions:
Installation instructions
Features
l Lightning monitoring: detection of all parameters of lightning current: real-time monitoring of parameters such as number, time, peak value, effective value, wave head, duration, energy, frequency and so on.。
l Condition monitoring: According to the international and industry standard Qrs, the number of impacts, leakage current and other multi-parameter criteria, effective prediction and judgment of the operating conditions of the arrester.
l A variety of probes: it is convenient for the direct installation of various aperture arresters, and the lightning monitoring needs of different nodes (flexible, open).
l Accurate judgment: effectively eliminate the influence of temperature, humidity, and pollution on the leakage current, and monitor the status of the arrester in real time.
l Environmental monitoring: It has the synchronous monitoring function of time, temperature and humidity.
l Fault location: with GPS positioning function, accurately determine the location of the fault.
l Intelligent duplex: remote software update; can remotely set the threshold value, early warning value, alarm value, communication times and other parameters in each unit.
l Easy to install: self-monitoring of the environment before installation to ensure the use of the product, just screw the bottom of the arrester, light and handy.
l Passive wireless: no need for power supply, with power warning, charging monitoring, and multiple wireless communication methods such as NB, 4G, and LORA.
l Accurate counting: It has the functions of preventing repeated counting of multiple thunders and identifying the impact of power grid fluctuations.