Zero-sequence current transformer fixing device of small-current system grounding fault positioning device
A zero-sequence current, ground fault technology, used in the installation of inductors, cables, transformer/reactor installation/support/suspension, etc.
Active Publication Date: 2020-04-17
GUIZHOU WUJIANG HYDROPOWER DEV
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- Application Information
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Problems solved by technology
Therefore, a fixed bracket for the zero-sequence current transformer of the ground fault location device of the small current system was designed on site, which solved the problem of installation and fixing of the zero-sequence current transformer in the panel cabinet of the 10kV plant power system
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[0022] The technical means adopted by the present invention to achieve the intended invention purpose are further described below in conjunction with the drawings and preferred embodiments of the present invention.
[0023] Such as figure 1 , figure 2 and image 3 As shown, in an optional embodiment of the present invention, a zero-sequence current transformer fixing device for a small current system ground fault location device is provided, including a bus connection assembly and a transformer connection assembly;
[0024] The busbar connection assembly includes a combined connecting plate, which can be assembled and connected to form a flat installation platform, and the combined connecting plate is combined to form a busbar embracing unit, and the busbar embracing unit is fixed outside the busbar by extrusion surface;
[0025] The transformer connection assembly includes a screw assembly fixedly connected to the surface of the mounting table, the screw assembly includes...
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The invention discloses a zero-sequence current transformer fixing device of a small-current system grounding fault positioning device. The zero-sequence current transformer fixing device comprises abus connecting assembly and a transformer connecting assembly, wherein the bus connecting assembly comprises combined connecting plates, the combined connecting plates can be connected in an assembledmode to form a plane mounting table, the combined connecting plates are combined to form a bus embracing and binding unit, and the bus embracing and binding unit is fixed to the outer surface of a bus in an extrusion mode; the transformer connecting assembly comprises a screw rod assembly fixedly connected to the surface of the mounting table, the screw rod assembly comprises a screw rod, a firstnut and a second nut, and the first nut and the second nut are in threaded connection to the screw rod and used for fixing the zero-sequence current mutual inductor. According to the fixing device, aflexible and adjustable installation structure is provided, the comb-tooth-shaped embracing and binding structure can adapt to installation of buses of different sizes, and the position and the posture of the transformer can be adjusted through the double-nut structure. The parallelogram assembly can adjust the position and the posture of the device relative to the bus.
Description
technical field [0001] The invention belongs to the technical field of power plant control systems, and relates to a current transformer installation technology of a power plant measurement and control system, in particular to a zero-sequence current transformer fixing device for a small current system grounding fault location device. Background technique [0002] When the power plant should install a small current system ground fault location device in the 10kV utility power system, it is necessary to install a zero-sequence current transformer in the corresponding 10kV utility power system incoming line switch and load switch panel. The space inside the system panel is relatively narrow, and there are 10kV cables passing through inside, and there is no fixed point for the zero-sequence current transformer. Therefore, a fixed bracket for the zero-sequence current transformer of the ground fault location device of the small current system was designed on site, which solved t...
Claims
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IPC IPC(8): H01F27/06H01F38/30H02G5/00
CPCH01F27/06H01F38/30H02G5/00
Inventor 王立军李吉刘万贾庆斌谭普成朱奎
Owner GUIZHOU WUJIANG HYDROPOWER DEV