On-line monitoring system for data collection of electric arresters based on GPS (Global Positioning System) synchronization

Abstract

The invention relates to an on-line monitoring system for data collection of electric arresters based on GPS (Global Positioning System) synchronization. The on-line monitoring system comprises a back-stage management server, wherein the back-stage management server is connected to a station control central unit; terminal devices are connected to the station control central unit; synchronous data of running parameters of the electric arresters which are in a network are collected by the terminal devices; power is supplied to the terminal devices by remote optical fibers of the arrester station control central unit; optical fiber communication is utilized to transmit the data; the station control central unit has a GPS time service function and is used for supplying synchronously collected pulses to the terminal devices distributed in different places, thereby realizing synchronous data collection; and inspection personnel can conveniently perform field check and state display on the running parameters of a plurality of local arresters by virtue of a man-machine interface of the station control central unit. Meanwhile, the collected data can be transmitted to the back-stage management server through the optical fibers or in a backup GPRS (General Packet Radio Service) wireless manner; therefore, the system has the characteristics of reducing the working strength of maintenance personnel and finding out potential hidden dangers of the arresters in time and is high in safety.

Description

technical field [0001] The invention belongs to the technical field of on-line monitoring of electric power equipment, and in particular relates to an on-line monitoring system for data acquisition of power surge arresters based on GPS synchronization. Background technique [0002] In recent years, in order to reduce the tripping of circuit breakers caused by lightning overvoltage in transmission lines or substations, high-voltage transmission line arresters have played a huge role and have been widely used. The performance of metal oxide (MOA) arresters directly affects power The system operates safely. Because the MOA arrester will gradually age under the action of high power frequency and high voltage for a long time, breakdown damage may occur during operation, and the protection characteristics will decline, which will have extremely serious consequences. In order to ensure the safe operation of the MOA arrester, MOA arresters must be Carry out strict online monitoring...

AI Technical Summary

Problems solved by technology

This method is expensive to replace the lightning arrester, labor-intensive, and needs to apply for a long period of power outage, which is not conducive to the economical and stable operation of the transmission line.

At present, most of the lightning arrester monitors used for online monitoring are installed independently. The inspectors regularly go to the site to check or record the operation of the lightning arrester. There is no data remote transmission function, and data sharing cannot be formed. It is not suitable for the substation environment where the lightning arresters are relatively concentrated. It is beneficial to management, and some manufacturers use the terminal plus GPRS wireless data module to realize remote data transmission and centralized management. Moreover, the data collection of each online monitor has not achieved clock synchronization, the collected data is not the same time data, and the reference of statistical analysis becomes poor.

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