Line quick grounding tester
A fast, line-based technology, applied in the direction of instruments, measuring devices, measuring electricity, etc., can solve the problems of power loss and waste, burning voltage transformers, personal electric shock incidents, etc., and achieve the effect of convenient storage
Active Publication Date: 2018-11-02
JIYANG POWER SUPPLY CO STATE GRID SHANDONG ELECTRIC POWER CO +1
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- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
If the distribution line is grounded, it will easily cause the iron core of the voltage transformer to saturate. If it runs for a long time, it will easily burn the voltage transformer, generate resonant overvoltage, and destroy the stability of the regional power grid, which will have a great impact on the reliability of power supply for users.
In addition, if the distribution line is not powered off and the conductive line falls to the ground, personal electric shocks caused by step voltage may occur and cause power loss and waste
Method used
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Embodiment Construction
[0017] The present invention will be described in detail below in conjunction with the drawings.
[0018] Such as figure 1 As shown, the box body 1 is the main body of the present invention. The open end of the box body is provided with lugs 11, and the box body is hingedly connected with the box cover 2 through the lugs 11, and a judgment instrument 21 is provided inside the box cover to determine Is it grounded? Fixed shafts 12 are respectively fixed on the left inner wall and the right inner wall of the box, such as figure 2 As shown, a radial rod 13 is provided on the fixed shaft, and the radial rod is arranged perpendicular to the fixed shaft. A locking rod 14 is installed on the top hinge 5 of the radial rod, and a damping member is arranged between the locking rod and the radial rod to avoid free movement between the limiting rod and the radial rod.
[0019] Such as figure 2 As shown, the fixed shaft is a stepped shaft, and a line roller 3 is provided on the fixed shaft. ...
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A quick line grounding judgment instrument is used for facilitating grounding detection of a line. The quick line grounding judgment instrument mainly comprises a box body and a box cover, wherein the box body is hinged with the box cover. The inner side of the box cover is provided with a judgment instrument for judging grounding; the left and right two sides of the box body are respectively provided with a fixation shaft; each fixation shaft is rotatably equipped with a line roller; a coil spring is arranged between the line roller and the fixation shaft; the two ends of the line roller are respectively provided with a baffle plate; the outer wall of the baffle plate is provided with a lock stop mouth; the fixation shaft is fixedly provided with a radial rod; a lock stop rod is hinged to the radial rod; when the free end of the lock stop rod is arranged in the lock stop mouth, the line roller is fixed with respect to the fixation shaft; the left-side line roller is wound by a current lead; the right-side line roller is wound by a voltage lead; the front side wall of the box body is provided with a movable plate; the movable plate and the box body can be in up-down slide connection; the movable plate is provided with a transformer; and the two ends of the movable plate are relatively fixed to the box body through lock stoppers. The quick line grounding judgment instrument can realize line grounding test effectively and is convenient to put away.
Description
Technical field [0001] The invention relates to the technical field of power line grounding detection, in particular to a line fast grounding judgment instrument. Background technique [0002] In the power industry, single-phase grounding of lines is a common fault, especially in severe weather such as rainy season, strong wind and snow, single-phase grounding faults occur frequently. After the single-phase is grounded, the fault phase-to-ground voltage decreases, and the phase voltage of the non-faulty two phases increases. Grounded operation of distribution lines can easily cause saturation of the voltage transformer core. If it is operated for a long time, it is easy to burn the voltage transformer, generate resonant overvoltage, and damage the stability of the regional power grid, which will have a greater impact on the reliability of power supply to users. In addition, if there is no power outage on the distribution lines and the conductive lines fall to the ground, a perso...
Claims
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IPC IPC(8): G01R31/02
CPCG01R31/50
Inventor 马宁周元哲王承军李江吉高崇滨李晓昕
Owner JIYANG POWER SUPPLY CO STATE GRID SHANDONG ELECTRIC POWER CO