Crosslinked polyethylene high-voltage cable on-line monitoring and early warning system

Abstract

The invention discloses a crosslinked polyethylene high-voltage cable on-line monitoring and early warning system which is mainly composed of an on-site data collection device, a data transmission network and a monitoring center. Various state data of a sensor sampling high-voltage cable and the environment where the sensor sampling high-voltage cable is located are collected by the on-site data collection device through measurement sensors of all function modules, and then reported to an intelligent data management platform of the monitoring center through the data transmission network. The crosslinked polyethylene high-voltage cable on-line monitoring and early warning system has comprehensive functions, is capable of achieving comprehensive, real-time and automatic monitoring and early warning, and meanwhile is compact in structure, stable, reliable and convenient to install and maintain. When the crosslinked polyethylene high-voltage cable on-line monitoring and early warning system is applied, high-voltage cable operation maintainers can well know the state of the cable and the state of the environment where the cable operates at any time and find defects in time, and therefore power accidents are avoided.

Description

Technical field [0001] The invention belongs to the technical field of high-voltage cable monitoring, and particularly relates to an online monitoring and early warning system for cross-linked polyethylene high-voltage cables. Background technique [0002] AC high-voltage long-distance transmission lines of 110kV and above usually use long-distance overhead lines. When entering urban areas, the overhead lines will generally be connected to the corresponding XLPE high-voltage cables (hereinafter referred to as “high-voltage cables”) laid underground. The transformer substations are then converted into different voltage levels through transformers and other power equipment to transmit electricity to various power-consuming areas in the urban area. If there is a sudden power failure on the transmission line, it will cause a large-scale blackout in the urban area, and in severe cases, it will cause a power outage in the entire urban area, causing immeasurable economic losses. In ord...

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Problems solved by technology

Even some devices with the same function are equipped with sensors that are quite different in appearance and installation methods, and have no versatility, resulting in confusion in on-site installation and difficult maintenance; in addition, online monitoring devices with various functions produced by different manufacturers have different appearance , size, performance, etc. are usually different. To integrate them and install them all in the limited space of the high-voltage cable joint well, it is very cumbersome to realize the comprehensive monitoring of the high-voltage cable status, and the system performance will also be unstable.

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