Cable uniform current detection device and method for achieving same
A technology of detection device and implementation method, applied in the direction of measurement device, measurement of current/voltage, fault location, etc., can solve problems such as failure to monitor current sharing, affecting power quality and grid reliability, and inability to realize cable current, to prevent The effect of failure and avoidance of failure
Active Publication Date: 2013-03-27
鲁明(山东)市政工程有限公司
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[0002] In recent years, with the rapid development of science and technology and economy, the demand for electric energy in industrial production and daily life is increasing day by day. For example, cable fires and cable discharges occur frequently. As a power transmission wire, the performance and reliability of cables directly affect the power quality and grid reliability. Among them, the important factors for cable faults are that the currents of different cables in the same phase cannot achieve current sharing. In the existing technology, there is no detection device that can monitor whether the cable is current-sharing, especially the cable current-sharing device applied to the high-frequency PWM output of the frequency converter. This problem has become the focus of attention of users.
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[0018] Such as figure 1 , figure 2 and image 3 A cable current equalization detection device shown includes: a box body 5 and a cover body 2; the box body 5 and the cover body 2 are sealed and connected; the cover body 2 is provided with several sheaths for cables to pass through hole 1; several lead wire holes 4 are opened on the box body 5; a plurality of current detectors for detecting the passing current of multiple parallel cables 6 are fixedly installed in the airtight cavity formed by the box body 5 and the cover body 2 Module 3, each cable 6 is correspondingly connected to a current detection module 3; the current detection modules 3 are respectively connected to the microprocessing for judging whether the passing current of multiple parallel cables 6 is evenly distributed according to the current signal transmitted by the current detection module 3 device 7; in addition, it also includes a connection to the microprocessor 7, an alarm module for alarming when the m...
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The invention discloses a cable uniform current detection device and a method for achieving the same. The device comprises a box body and a cover body which are in sealing connection. Penetrating holes for a plurality of cables to penetrate through are arranged on the cover body; a plurality of lead holes are opened on the box body; a plurality of current detection modules used for detecting the currents passing through a plurality of cables connected in parallel are fixedly mounted in a sealed cavity formed by the box body and the cover body, and Each cable is connected with one of the current detection modules correspondingly; the current detection modules are connected with a microprocessor which is used for judging whether currents passing through the plurality of cables connected in parallel are distributed uniformly according to current signals transmitted by the current detection modules. The plurality of the current detection modules which are mounted in the sealed cavity formed by the box body and the cover body are used for detecting current passing values of the plurality of the cables which are connected in parallel, and the microprocessor compares and determines the detected passing current values of the cables, so that uniform current conditions of the cables connected in parallel are obtained.
Description
technical field [0001] The invention relates to a cable current equalization detection device and a realization method. Background technique [0002] In recent years, with the rapid development of science and technology and economy, the demand for electric energy in industrial production and daily life is increasing day by day. For example, cable fires and cable discharges occur frequently. As a power transmission wire, the performance and reliability of cables directly affect the power quality and grid reliability. Among them, the important factors for cable faults are that the currents of different cables in the same phase cannot achieve current sharing. In the prior art, there is no detection device capable of monitoring whether the cable is current-sharing, especially the cable current-balancing device applied to the high-frequency PWM output of the frequency converter, and this problem has become the focus of users' attention. Contents of the invention [0003] In vi...
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IPC IPC(8): G01R31/08G01R19/165
Inventor 王阳
Owner 鲁明(山东)市政工程有限公司