Real-time early warning system for internal environment of high-voltage cable branch boxes

Abstract

The invention provides a real-time early warning system for internal environment of high-voltage cable branch boxes. An inducting energy obtaining power source, a smell sensor, a smoke sensor and a monitoring device are arranged in each branch box, wherein the inducting energy obtaining power source, the smell sensor and the smoke sensor are connected with monitoring devices, and the monitoring devices are connected with an upper computer or mobile monitoring equipment by means of wireless communication. According to the early warning system, the smell sensors and the smoke sensors are adopted for monitoring the internal environment of the high-voltage cable branch boxes in real time, concentration of smells and smoke serves as a criterion for early warning of cable connector faults in the branch boxes, equipment cost is low, installing and using are convenient, a threshold value can be adjusted according to actual conditions, false alarms and alarm failure can be avoided by means of double monitoring over the smells and the smoke, and the system is suitable for power supply and distribution networks in large and medium cities, and particularly suitable for real-time early warning of the high-voltage cable branch boxes in the complex environment with heavy external smoke, or varied external smells or haze.

Description

technical field [0001] The invention relates to a power cable transmission and distribution network, in particular to high-voltage cable joint fault handling, and more specifically to a real-time early warning system for the internal environment of a high-voltage cable distribution box. Background technique [0002] The power industry is the foundation and leading industry of national economic construction, and plays a pivotal role in national economic construction. The fundamental task of the power system is to supply electric energy "safely, reliably, and with high quality". With the rapid development of our country's national economy, the improvement of urban construction and industrial modernization, the electric power industry, which is the lifeline of the national economy, has encountered unprecedented challenges. [0003] In the power supply system of cities and large and medium-sized enterprises, more and more power cables are used for power transmission and distrib...

AI Technical Summary

Problems solved by technology

[0006] 1. High cost: Due to the large number of cable joints inside the distribution box, there are generally more than 6 cables in the distribution box, and each cable needs to be installed with a sensor, so the number of sensors is large and the equipment costs a lot

[0007] 2. Difficult to implement: At present, the internal cable joint structure of the distribution box does not reserve space for the installation of temperature sensors

[0008] 3. Difficulty in installation: the temperature sensor needs to directly contact the core of the high-voltage cable conductor, and it is difficult to insulate the installation position

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