Method and system for detecting state of cable intermediate joint
A technology of cable intermediate joints and intermediate joints, which is applied in the direction of measuring devices, instruments, etc., can solve the problem that the cable cannot reach the designed service life, and achieve the effects of intuitive and clear detection results, simple and efficient operation, and high detection efficiency
Inactive Publication Date: 2021-03-02
SHENZHEN POWER SUPPLY BUREAU
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Problems solved by technology
Cables with hidden dangers of damp and water ingress, under the excitation of partial discharge or overvoltage, are easy to rapidly develop into defects and expand to cause faults, and faults often occur repeatedly on the same line, resulting in the failure of most cables. Cannot reach its designed service life
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[0020] The present invention will be described in detail below through specific embodiments in conjunction with the accompanying drawings. The following embodiments are only used as examples for illustration and will not limit the scope of protection of the present invention.
[0021] The cable intermediate joint state detection system of the present invention is used to obtain the state information of the cable intermediate joint. Such as figure 1 As shown, the cable intermediate joint 10 includes an intermediate joint body 11 and an intermediate joint protection box 12, wherein the intermediate joint body 11 is installed in the intermediate joint protection box 12, and the intermediate joint protection box 12 plays the role of protecting the intermediate joint body 11 .
[0022] The cable intermediate joint state detection system of the present invention includes a passive wireless sensor 20 and an intelligent handheld terminal 30 .
[0023] The passive wireless sensor 20 ...
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The invention provides a method and a system for detecting the state of a cable intermediate joint, which are used for acquiring the state information of the cable intermediate joint. The cable intermediate joint comprises an intermediate joint body and an intermediate joint protection box used for installing the intermediate joint body. The system for detecting the state of the cable intermediatejoint comprises a passive wireless sensor and an intelligent handheld terminal, and the passive wireless sensor is arranged on the cable intermediate joint and used for detecting the state information of the cable intermediate joint; and the intelligent handheld terminal is used for supplying power to the passive wireless sensor to activate the passive wireless sensor, so that the passive wireless sensor detects the state information of the cable intermediate joint and transmits the detected state information to the intelligent handheld terminal. The system can achieve the state detection ofthe cable intermediate joint in an operation state, is low in cost, is convenient to install, is safe and reliable, and is high in detection efficiency.
Description
technical field [0001] The invention relates to the technical field of electrician detection, in particular to a method and system for detecting the state of a cable intermediate joint. Background technique [0002] Power cables are important devices for transmitting and distributing electrical energy. According to incomplete statistics in Shenzhen, Guangzhou and other regions, a large number of operating cables have different degrees of moisture or water ingress, especially for medium-voltage cables, the proportion of damp and water ingress lines exceeds 60%. Cables with hidden dangers of damp and water ingress, under the excitation of partial discharge or overvoltage, are easy to rapidly develop into defects and expand to cause faults, and faults often occur repeatedly on the same line, resulting in the failure of most cables. Cannot reach its designed service life. Taking Shenzhen as an example, during the National Day of 2013, a certain line suffered from water ingress...
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IPC IPC(8): G01D21/02
CPCG01D21/02
Inventor 何亮黄湛华吕谢超毛骏阳浩徐启源
Owner SHENZHEN POWER SUPPLY BUREAU