Frequency-domain dielectric spectrum experimental system and method for vehicle cable terminal under different temperature conditions
A frequency-domain dielectric spectrum and cable terminal technology, which is applied in the field of insulation state detection of vehicle-mounted cable terminals, can solve the problems of long construction period, high operation cost, and large volume of artificial climate chamber, and achieve strong economic applicability and rapid temperature change , the effect of low operating cost
A frequency-domain dielectric spectrum and cable terminal technology, which is applied in the field of insulation state detection of vehicle-mounted cable terminals, can solve the problems of long construction period, high operation cost, and large volume of artificial climate chamber, and achieve strong economic applicability and rapid temperature change , the effect of low operating cost
CN107045083AActive Publication Date: 2017-08-15SOUTHWEST JIAOTONG UNIV
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[0023] The present invention will be further described below in conjunction with accompanying drawing:
[0024] figure 1 Shown is a schematic diagram of the appearance structure and composition of the experimental device of the present invention. Depend on figure 1 It can be known that a vehicle-mounted cable terminal frequency-domain dielectric spectrum experiment system and method under different temperature conditions can mainly realize the frequency-domain dielectric spectrum test of the vehicle-mounted cable terminal at different ambient temperatures. The specific features are: the low-temperature environment simulation system is mainly composed of Low temperature test chamber 14, exhaust hole 20, fan 4, air intake hole 22, No. nine sensor 33, No. ten sensor 34, No. eleven sensor 35, No. twelfth sensor 36 form: low temperature test chamber 14 is used for on-board cable The terminal 19 cools down; No. 9 sensor 33 and No. 12 sensor 36 are placed on the top of the low temp...
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The invention discloses a frequency-domain dielectric spectrum experimental system for a vehicle cable terminal under different temperature conditions. The frequency-domain dielectric spectrum experimental system is composed of a high-temperature heating simulation system, a low-temperature environment simulation system, a temperature control system and a frequency-domain dielectric spectrum test system; and the high-temperature heating simulation system is arranged in a cavity of the low-temperature environment simulation system, and the temperature control system and the frequency-domain dielectric spectrum test system are arranged outside the cavity of the low-temperature environment simulation system. On the basis of the experimental system, a provided experimental method can be used to simulate temperature change in a relatively wide range of the vehicle cable terminal and further conduct frequency-domain dielectric spectrum experiments of the vehicle cable terminal under the different temperature conditions, the economical and applicable performances are higher, and the system and method have significance in detecting and evaluating the insulation aging state of the vehicle cable terminal.
Description
technical field [0001] The invention belongs to the field of insulation state detection of vehicle-mounted cable terminals, and in particular relates to a frequency-domain dielectric spectrum experiment system and method of vehicle-mounted cable terminals under different temperature conditions. Background technique [0002] On-board high-voltage cables are the most critical part of the high-voltage equipment of high-speed EMUs and electric locomotives. The role of EMUs or locomotives in connecting various high-voltage equipment and transmitting electric energy is irreplaceable. However, in the northwestern region of my country, explosion accidents of high-voltage cable terminals on electric locomotives occur frequently, resulting in huge economic losses and endangering driving safety. Due to its geographical particularity, on-board cables often experience huge temperature changes of tens of degrees within a day. This change greatly tests the insulation state of the exposed o...
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Patent Timeline
15 Aug 2017
Publication
CN107045083A
- IPC
- G01R27/26
- CPC
- G01R27/2617
- Inventors
- 周利军; 朱少波