In the power system, zinc oxide lightning arrester is a key equipment for protecting transmission lines and substation equipment from lightning strikes. The stability and reliability of its performance are directly related to the safe operation of the power grid. With the growth of electricity demand and the expansion of power grid scale, traditional lightning arrester detection methods are no longer able to meet real-time, efficient, and accurate monitoring needs. In this context, Liou Measurement and Control has launchedLE-MOA-600The online monitoring and analysis system for zinc oxide lightning arrester has emerged, providing strong technical support for real-time monitoring and maintenance of power equipment.

1、 System Overview

LE-MOA-600The online monitoring and analysis system for zinc oxide lightning arrester is an efficient and accurate monitoring tool designed by Leo Measurement and Control for zinc oxide lightning arrester. The system comprehensively adopts two detection techniques, absolute value measurement and relative value comparison, effectively solving the problem of accurate measurement of dielectric loss and resistive current under on-site interference environment, and providing strong guarantee for the normal operation of equipment.

2、 System functions

1. Real time online monitoring

LE-MOA-600The system can monitor key parameters such as full current, resistive current, capacitive current, as well as the number of actions and lightning strike time of the zinc oxide lightning arrester in real time. Through real-time data collection and transmission, the system can timely reflect the working status of lightning arresters and provide accurate data support for operation and maintenance personnel.

2. Data Analysis and Evaluation

The system is equipped with a high-performance processor, combined with advanced algorithms and analysis techniques, to deeply mine and analyze the collected data. Through data analysis, the system can evaluate the health status of lightning arresters, predict their degradation trends, and provide scientific basis for operation and maintenance decisions.

3. Fault warning and alarm

When abnormal data is detected in the lightning arrester,LE-MOA-600The system can automatically issue warning or alarm signals and promptly notify operation and maintenance personnel to take measures. This function effectively prevents secondary disasters caused by the aging and failure of lightning arresters, ensuring the safe and stable operation of the power system.

4. Data storage and recording

The system has powerful data storage capabilities and can continuously detect and save data from up to hundreds of devices. These data can not only be used for subsequent analysis and maintenance, but also provide strong support for the full lifecycle management of equipment.

5. Multiple detection modes and compensation methods

LE-MOA-600The system provides multiple detection modes and compensation methods to meet the monitoring needs in different scenarios. For example, when measuring zinc oxide lightning arresters, the system provides capacitive equipment compensation method andPTTwo methods of signal compensation effectively avoid the use ofPTThe inconvenience caused by secondary signals.

3、 System advantages

1. High precision and stability

LE-MOA-600The system adopts high-precision current sensors with cross frequency self calibration function and advanced digital phase detection technology to ensure the accuracy and stability of dielectric loss testing. The system can eliminate harmonic interference and the influence of environmental temperature changes, providing strong guarantees for the accuracy of data.

2. Wide range detection and high tolerance

The system sensor can accurately detect100μAto1000mAThe input signal is adaptable to various working conditions. At the same time, the sensor also has high tolerance and can withstand10APower frequency current and10kAThe impact of lightning current meets strict online detection requirements.

3. Convenience and Security

LE-MOA-600The system adopts a design structure with built-in sensors and contains high-precision core penetration insideCTSimply install a dedicated sampling protection unit below the tested electrical equipment to conduct regular inspections of the operating electrical equipment using portable detection instruments. This design not only improves the convenience of detection, but also avoids the safety hazards that may arise from traditional sampling methods.

4. Intelligence and automation

The system has intelligent analysis capabilities and can deeply mine and analyze monitoring data through algorithms and analysis techniques. At the same time, the system also supports“Live detection”to“online monitoring”The upgrade without power outage only requires the installation of a monitoring unit（IED）It can achieve the expansion and upgrade of functions.

5. Intuitive display and convenient operation

LE-MOA-600The system is equipped with a LCD screen that can clearly display key data such as voltage, current, dielectric loss, resistive current, capacitive current, etc. At the same time, the system also adopts a portable design structure, which is easy to operate, and the built-in lithium battery can support long-term continuous work, meeting the requirements of on-site use.

4、 Application prospects

With the continuous development of the power system and the expansion of the power grid scale, the application prospects of the online monitoring and analysis system for zinc oxide lightning arresters are becoming increasingly broad.LE-MOA-600The system plays an increasingly important role in real-time monitoring and maintenance of power equipment due to its advantages of high precision, high stability, convenience, and intelligence. In the future, with the continuous advancement of technology and the deepening of applications,LE-MOA-600The system is expected to be widely applied and promoted in more fields.