Tower grounding detection device
A grounding detection and tower technology, applied in the fault location and other directions, can solve the problem that the detection device cannot accurately judge the fault grounding point, etc., and achieve the effect of reasonable design and low cost
Active Publication Date: 2015-04-29
山西省电力公司阳泉供电公司 +1
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Problems solved by technology
[0005] In order to solve the problem that the existing detection device cannot accurately determine the faulty grounding point after a grounding fault occurs on the overhead power distribution line, the present invention provides a tower grounding detection device
Method used
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Embodiment Construction
[0015] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0016] Such as figure 1 As shown, a tower grounding detection device includes a casing and a circuit placed in the casing, the circuit includes a coil L wound on a ring iron core, and the two ends of the coil L are connected in parallel with a second crystal diode D2 , the anode of the second crystal diode D2 is grounded, the cathode of the second crystal diode D2 is connected to the anode of the first crystal diode D1, and the cathode of the first crystal diode D1 is grounded sequentially through the first resistor R1 and the second resistor R2 , the cathode of the first crystal diode D1 is grounded through the first capacitor C1.
[0017] The middle node of the first resistor R1 and the second resistor R2 is connected to the base of the NPN transistor T1, the emitter of the NPN transistor T1 is grounded, and the collector of the NPN transis...
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The invention relates to the technical field of power detection, in particular to a tower grounding detection device. The problem that the conventional detection device cannot accurately judge a fault grounding point after the overhead distribution line has a grounding fault is solved. The tower grounding detection device comprises a coil (L), wherein two ends of the coil (L) are connected in parallel with a second crystal diode (D2); the anode of the second crystal diode (D2) is grounded; the cathode of the second crystal diode (D2) is connected with the anode of a first crystal diode (D1); the cathode of the first crystal diode (D1) is sequentially grounded through a first resistor (R1) and a second resistor (R2); and the cathode of the first crystal diode (D1) is grounded through a first capacitor (C1). The tower grounding detection device is reasonable in design, simple, practical and low in cost, the maintainer can accurately judge which telegraph pole has a grounding fault, and the maintenance operation is timely performed.
Description
technical field [0001] The invention relates to the technical field of electric power detection, in particular to a tower grounding detection device. Background technique [0002] In the power system, the overhead transmission and distribution line is the main power supply method of the power supply company. Due to the long transmission distance of overhead distribution lines, many branch lines, and exposure to the atmospheric environment, they will be directly affected by meteorological conditions. After passing through equipment such as porcelain bottles and lightning arresters, ground faults often occur, which in turn causes power outages and brings great harm to people's lives. It is inconvenient to come and interfere with the normal production and operation of the enterprise. [0003] At present, each power supply company usually uses equipment such as grounding line selection device or fault indicator to find the grounding point after a grounding fault occurs in the d...
Claims
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IPC IPC(8): G01R31/08
Inventor 马维青白贵山杨培江赵世红
Owner 山西省电力公司阳泉供电公司