Method and device for determining current-carrying capacity of cable

A determination method and technology for determining devices, which are applied in the field of electric power, can solve the problems of large errors in calculation results, large errors, and inability to obtain the current carrying capacity of cables, and achieve the effect of avoiding the influence of errors and small errors.

Active Publication Date: 2012-11-14
GUANGZHOU POWER SUPPLY CO LTD +1
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  • Abstract
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Problems solved by technology

[0003] At present, the determination of ampacity is generally carried out using the methods in the IEC60287 standard or the IEC60853 standard. However, the methods in these two standards have the problem of excessive cable design margins, and the error is large, and it is impossible to obtain accurate data. cable ampacity
Taking the IEC60287 standard as an example, in the IEC60287 standard, the calculation of the ampacity is obtained b...

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  • Method and device for determining current-carrying capacity of cable
  • Method and device for determining current-carrying capacity of cable
  • Method and device for determining current-carrying capacity of cable

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Embodiment Construction

[0017] The solution of the present invention will be described in detail below in combination with the preferred embodiments thereof.

[0018] figure 1 A schematic flowchart of an embodiment of the method for determining the ampacity of a cable according to the present invention is shown in .

[0019] Such as figure 1 As shown, the method for determining the cable ampacity in the present embodiment includes steps:

[0020] Step S101: measuring the skin temperature of the cable and the ambient temperature at a set distance from the cable;

[0021] Step S102: Determine the cable ampacity of the cable according to the above-mentioned skin temperature and the above-mentioned ambient temperature.

[0022] According to the solution in this embodiment, it is by measuring the skin temperature of the cable and the ambient temperature at a set distance from the cable, and then determining the ampacity of the cable based on the measured skin temperature and ambient temperature, which ...

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Abstract

The invention discloses a method and device for determining the current-carrying capacity of a cable. The method comprises the following steps of: measuring the skin temperature of the cable and the environmental temperature at a preset distance away from the cable; according to the skin temperature and the environmental temperature, determining the current-carrying capacity of the cable. According to the scheme of the invention, through measuring the skin temperature of the cable and the environmental temperature at a preset distance away from the cable, and based on the measured skin temperature and the environmental temperature, the current-carrying capacity of the cable is determined, and the current-carrying capacity of the cable is estimated through fully considering the surrounding environment temperature of the cable, therefore, the error influence of environment changes on the current-carrying capacity of the cable is avoided, so that the obtained current-carrying capacity of the cable is smaller in error and more accurate.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a method for determining the ampacity of a cable and a device for the ampacity of a cable. Background technique [0002] The 100% load factor ampacity of the cable (referred to as the cable ampacity) is one of the most important parameters in the cable line. The accurate calculation of the cable ampacity is important for both the design of the power cable and the operation of the power system. Significance, which is usually reflected in: the power design department selects the cable type and cable line design according to the cable ampacity, while the power operation department controls the load of the cable line according to the cable ampacity, so the calculation of the cable ampacity The determination method plays an important role in the operation of the entire power system. [0003] At present, the determination of ampacity is generally carried out using the methods ...

Claims

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Application Information

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IPC IPC(8): G01R31/00
Inventor 刘毅刚刘刚周凡叶晓君黄云张高言许宇翔石银霞单鲁平
Owner GUANGZHOU POWER SUPPLY CO LTD
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