GPRS network-based power cable temperature online monitoring system

Abstract

The invention discloses a GPRS network-based power cable temperature online monitoring system. The GPRS network-based power cable temperature online monitoring system comprises conductor elements, a temperature detection module, a GPRS wireless communication module, a cable surface temperature acquisition circuit, a current measurement circuit and a data monitoring server. The GPRS network-based power cable temperature online monitoring system is characterized in that a temperature detection part needs the cable surface temperature acquisition circuit and the cable working current measurement circuit, an acquired and converted voltage value is converted into a digital value through an AD converter, and the digital value is transmitted to a single chip microcomputer for temperature formula calculation, and an obtained temperature numerical value is transmitted to the GPRS wireless communication module through an RS-485 bus. The GPRS network-based power cable temperature online monitoring system gives an alarm and carries out a cut-off action when encountering an abnormal operation condition of a cable, and transmits the information to electric power dispatch personnel as a basis for their maintenance and dispatching. According to the GPRS network-based power cable temperature online monitoring system, the temperature monitoring of power cables is mainly to measure conductor temperature during the operation of the cables, and then transmit temperature numerical values to a monitoring center through the GPRS wireless communication module.

Description

technical field [0001] The invention relates to a data acquisition and detection system, in particular to a system for detecting cable temperature by using a GPRS system. Background technique [0002] With the rapid development of our country's national economy, urban construction and enterprise modernization have improved, and the power industry, which is the lifeline of the national economy, has encountered unprecedented challenges. In order to meet the demand for power supply, the proportion of power cables in the urban power grid is increasing, which leads to an increasing workload of operation management, inspection and maintenance of power cables. my country's urban power grid transformation has two notable features, one is the power supply mode ring network, and the other is the cable transmission and distribution network. Among them, the cableization of the power transmission and distribution network is to change the 10KV (or higher voltage level) overhead transmiss...

AI Technical Summary

Problems solved by technology

When the cable is directly buried, if the thermal characteristics of the environment are stable, the temperature rise of the cable based on the environment can be solved by the linear superposition method, but when the environment is a nonlinear thermal characteristic, the linear superposition method is not applicable

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