Flexible direct-current cable with cooling function

Abstract

The invention relates to a flexible direct-current cable with a cooling function. With the flexible direct-current cable with the cooling function adopted, defects in the prior art are overcome. According to the technical schemes, the flexible direct-current cable with the cooling function comprises cable cores, cooling pipelines and a temperature measurement optical fiber unit. Each cable core comprises a conductor; a conductor shielding layer wraps the conductor; the outer side of the conductor shielding layer is coated with an insulating layer; the outer side of the insulating layer is coated with an insulating shielding layer; the outer side of the insulation shielding layer is wrapped by a semi-conductive buffer layer; and the outer side of the semi-conductive buffer layer is wrappedby a metal shielding layer. The cable cores, the cooling pipelines and the temperature measurement optical fiber unit are wrapped by a wrapping tape layer; a gap in the inner side of the wrapping tapelayer is filled with a cable filling rope; and the outer side of the wrapping tape layer is wrapped by an outer sheath; the temperature measurement optical fiber unit is connected with a temperaturemonitoring system; the cooling pipelines are connected with a tap water pipeline; the running of tap water is controlled through an electromagnetic valve; and the control signal of the electromagneticvalve is provided by the temperature monitoring system.

Description

technical field [0001] The invention relates to a flexible DC cable, in particular to a ±10kV flexible DC cable with its own cooling function. Background technique [0002] For a long time, because AC power generation is relatively simple and does not require rectification, and AC transmission is convenient for voltage transformation and high-voltage transmission to reduce losses, AC transmission has always been the main method of power transmission. However, with the development of the power system, the increase of transmission capacity and distance, the stability of AC transmission and the short-circuit capacity under cut-off faults have become increasingly complex. In the development of new technologies such as high-power thyristors and automatic control of DC transmission Today, DC transmission technology has become possible and developed rapidly, and has been widely used all over the world. Compared with AC transmission, DC transmission has the following advantages: (1...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the existing common ±10kV flexible DC cable in the operation process of the current scheme. When the circuit is overloaded, the conductor heating will increase sharply, which greatly exceeds the long-term allowable operating temperature of the conductor (90°C). If the thermal aging speed of the cable insulation is reduced, the service life of the cable and the long-term stable operation of the line will be greatly reduced, which will bring immeasurable losses and impacts on the national economy and residents' lives. 10kV Flexible DC Cable

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