GPRS Transmitter Surge Arrester Online Monitoring

Transmission LinesMOASurge Arrester Online Monitoring Device

One,    Preface

In recent years, with the aim of reducing circuit breaker trips caused by lightning overvoltage on transmission lines, surge arresters for high-voltage transmission lines have played a significant role and have been widely adopted.MOAThe quality of surge protectors directly impacts the safe operation of the power system.MOASurge arresters, when subjected to high voltage AC for an extended period, will gradually degrade. During operation, they may experience breakdown and damage, leading to a decrease in protective characteristics, which could result in extremely severe consequences. In order to ensureMOASurge protector operates safely, must ensureMOASurge protectors are undergoing rigorous monitoring.

Currently, monitoringMOASurge arrester methods utilize surge arrester monitors for online monitoring. The principle of operation, under normal operating voltages, is measured by a current meter through the variation of the leakage current of the surge arrester. When a strong action current flows, it is transferred from the leakage current measuring circuit to the counter circuit. The operation of the counter is achieved by utilizing the energy from the action current to record the number of operations. However, since surge arrester monitors are all installed at high pole towers, the task of reading surge arrester parameters and maintenance work is quite challenging. The existing method involves regularly replacing surge arresters and conducting inspections on the towers during the annual standard maintenance, cleaning the surge arresters and grounding devices. This method is costly for surge arrester replacement, labor-intensive, and requires a long power outage period for approval, which is not conducive to the economic and stable operation of transmission lines. Therefore, it is necessary to adopt a“Online, real-time, remote, intelligent, reliable”Our monitoring methods.

Two,    Overview

YDT-XLType Transmission LineMOAThe online surge arrester monitoring device (hereinafter referred to as the device), is a high-tech new product developed by our company to meet the needs of the power system.Online monitoring has been enhanced with the integration of digital collection and transmission technology.The measurement results will be transmitted throughGPRSEnable Digital Transmission: This device boasts exceptional reliability and security, coupled with a relatively affordable price, making it possible to install in each setMOASurge protectors are subjected to real-time monitoring, enabling centralized surveillance, which effectively enhances the inspection efficiency of line surge protectors and reduces the labor intensity on inspectors. This ensures accurate and timely health status of operating equipment, allowing operators to promptly grasp and proactively address potential accidents, thus guaranteeing the safe and stable power supply of the power grid.

Three  Product Features

1．According to electricity generation [2004］338The company has developed the "Technical Regulations for Online Monitoring and Live Testing of Zinc Oxide Surge Arresters."

2Principle of Measurement: This deviceUtilizing a single-chip microcontrollerElectric currentLightning strike occurrences were sampled and isolated.485Output via communication protocol485Please provide the Chinese content you would like translated into American English.GPRSData transmission to the main station via the conversion protocolThe surge protector operates without any impact, effectively ensuring both personal and equipment safety.

3Integrated Information and Full-Digital Communication: This device employs the latest technologies of信息化 integration and full-digital communication to realize real-time remote transmission functions and achieve network management.

4The local system is powered by solar energy, ensuring safety and stability.

5．Based onGPRS/GSMWireless data transmission over the internet“Real-time, online, intelligent, remote transmission”Monitor.

IV. Main Functions and Technical Specifications

The device is primarily composed of two parts: the data collection and transmission unit (local system) and the data receiving unit (back-end system). The local system employs advanced electronic technology for real-time monitoring of transmission lines.MOASurge arresters are monitored for their full current (leakage current) under operating voltage, the dates and times of discharge operations, and the cumulative number of discharge operations, with data processing and storage conducted. The backend system operates on a hardware platform of servers or laptops, with servers located at the substation.(Power Plant)Within the system operation monitoring center, laptops can be conveniently carried around. The backend system is primarily responsible for receiving lightning rod detection data sent from all local systems, and completes tasks such as display storage, curve analysis, and alarm management.

During system operation, the background system performs designated cyclesGPRSData is collected and monitored from local systems on a regular basis, and all data sent from the local systems are displayed and stored in sequence according to their identification numbers.。

（1Local System's Main Functions and Technologies

Local systems primarily include:RS485Communicative Surge Arrester Online MonitorAndTransformTwo boxes in total.ConvertBox powered by solar-powered deviceGPRSThe wireless data transmission module composition. The solar-powered unit is responsible for providing the local system's power supply, with the solar configuration selected based on the climate conditions of the usage area.RS485Communication-type Surge Arrester Online MonitorReal-time measurement of transmission linesMOAThe surge protector's full current and operating times, along with the measured data, are transmitted to the dataBox Converter ConnectionGPRS。MonitorUpon receiving collection instructions from the back-end system, the total current and the cumulative operation times of the three-phase current transmitter are transmitted.GPRSData transmitted to the backend.

Component Function Brief Introduction:

1、RS485Communication Surge Arrester Online Monitor

Feature Overview:

Communication-type surge arrester online monitor, a newly designed product by our companyRS485Surge arrester monitor with bidirectional communication function. Technical performance fully meets international standards.IECThe requirements. Technical specifications and originalJSH/JCQSimilar models can record the operation times of surge arresters and monitor the leakage current of surge arresters online, and are equipped with485Communication interface allows for real-time transmission of lightning rod operating parameters, such as leakage current size, operation times, and operation time, to the main control room.

Technical Indicators:

l Full Current Range Testing0.01～5.00mA/Effective Value   Error±1%±2No Chinese content provided.  Minor division:  10μA

l Recorded total number of discharge actions:0～99Next    

l Discharge action count response value:  4/8^μS ≥50A(Peak)

l Power Supply:DC12VEnsures safety and reliability, meeting the power grid's requirements for secure power supply.

l Work Environment: Outdoor Use-30℃～50℃ 

2No Chinese content provided.Conversion Box

Feature Overview:

ThroughRS485Total real-time collection of eachOnline MonitorMeasure data, organize it into a dataset, and then throughGPRSThe network sends data to the backend system, installed onConvertInside the box.

Technical Indicators:

l Communication Interface:RS485Interface

l Porter Ratio:9600bps

l Power SupplyDC5VEnsures safety and reliability, meeting the power grid's requirements for secure power supply.

l Work Environment:-30℃～50℃  ＜95℅RH(Non-Cooled)

3Solar-powered installation

Feature Overview:

Including solar panels, power controllers, and batteries. Tailored according to regional environmental and climatic conditions, the device is primarily responsible for providing the working power for local systems. The unit employs high-efficiency solar panels and high-reliability batteries, with the power controller based on specialized software of an expert control system, achieving intelligence.SOCThe system features automatic control with overcharge, over-discharge, electronic short-circuit, overload protection, and unique reverse connection protection; ensuring long-term reliable power supply requirements for the local system. Installed inside the collection box.

4、GPRSWireless Data Transmission Module

Feature Overview:

Based onGPRSWireless data transmission terminal equipmentRS485/422Interface and fully transparent data channels enable convenient implementation of remote, wireless, and networked communication methods.RS485Interface easily integrates withIntemetOur wireless connection offers wide network coverage (mobile network coverage, where mobile phones can be used), flexible and quick networking, and is installed inside the collection box.

Technical Indicators:

l Adaptable Power SupplyDC5V-26V 

l SIMCircuit Voltage:3V、1.8V

l Frequency Band:900/1800/1900MHz

l Serial Port Level Type:RS485Standard Level

l Serial Port Baud Rate:300-115200bps

l Work Environment:-25℃～70℃  ＜95℅RH(Non-Cooled)

（2Back-end system's main functions

Back-End Center Software

System software-basedWindowsThe platform's backend application software is divided into two parts: monitoring and analysis, and data management. The system's monitoring and analysis section is designed using object-oriented programming techniques, featuring a simple software structure and a user-friendly interface.

Primary Features:

☆ Real-time collection of data from various local systems, displaying each transmission line groupMOASurge arrester status, data collection methods customizable by users.“Manual Inspection”No Chinese content provided.“Automated Inspection”, among which“Automatic Inspection”Users can set the number of automatic inspections per day, with each inspection collecting all local transmission lines of the system.MOASurge arrester's full current and total operation counts

☆ Historical data (normal operation data and alarm data) recording capabilities, with the ability to export and generateexcelDocuments, edit and print.