500KV extra-high voltage power cable with real-time temperature detection function

Abstract

The invention discloses a 500KV extra-high voltage power cable with a real-time temperature detection function, which comprises a conductor positioned in the center of the cable. A semiconductive tape, a conductor shielding layer, an insulating layer, an insulating shielding layer, a semiconductive water-blocking expansion buffer layer, a corrugated aluminum sheath and a nonmetallic sheath are sequentially arranged outside the conductor. A temperature detection optical fiber is arranged in the insulating shielding layer along the axial direction of the cable, and is connected with a switch cabinet temperature monitoring and early warning system. The 500KV extra-high voltage power cable with the real-time temperature detection function can monitor the temperature variations of long-distance cables in real time and accurately monitor the temperature conditions of high voltage switch contacts so as to realize point and line combination and comprehensive monitoring, and simultaneously can timely transmit fire alarming information to a fire alarming controller to realize gang control.

Description

A 500KV UHV power cable with real-time temperature detection function technical field The invention relates to a power cable, especially a 500KV ultra-high voltage power cable. Background technique With the rapid development of my country's economy, new situations continue to emerge in terms of safety production. Some frequent accidents still occur from time to time, and some have become more and more prominent. Fire accidents and power outages caused by cables on fire Accidents account for a large proportion of them. A large number of power cables and control cables are laid in the power plant and connected to the high-voltage switchgear. These cables are distributed in cable tunnels, cable bridges, and cable interlayers, and are respectively connected to various electrical equipment and connected to the control room. After a cable fire accident, it is extremely harmful. Since the cables are often laid in a centralized manner, once a fire occurs, it will have a wide ra...

AI Technical Summary

Problems solved by technology

Since the cables are often laid in a centralized manner, once a fire occurs, it will have a wide range of influence, long repair time, and great losses

Especially for 500KV UHV power cables, once a fire occurs, the consequences are unpredictable

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