Anti-interference filtering device for grounding ring current

A technology of grounding circulating current and filtering device, applied in the direction of measuring device, only measuring current, measuring current/voltage, etc., can solve the problem of unstable output of ground wire current monitoring transformer, and reduce system instability, stabilize output, The effect of improving accuracy

Inactive Publication Date: 2017-05-10
JIANGSU JUNLONG ELECTRIC TECH
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Problems solved by technology

[0003] Aiming at the problems existing in the prior art, the present invention provides a method that can solve the problem of unstable output of the ground wire current monitoring transformer, realize the stable output of the centralized data collector, enable the ground current signal to be accurately restored, and improve the overall monitoring efficiency. Anti-jamming filter device for ground loops with high system accuracy

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  • Anti-interference filtering device for grounding ring current
  • Anti-interference filtering device for grounding ring current

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Embodiment Construction

[0012] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0013] Such as figure 1 As shown, an anti-jamming filter device that can be used for ground loops includes a ground loop monitoring transformer 1 and a centralized data collector 3, and the output standard of the ground loop monitoring transformer 1 is 4-20mA. An anti-interference filter interface 2 is provided between the ground circulation monitoring transformer 1 and the centralized data collector 3, and the output end of the ground circulation monitoring transformer 1 is connected to the input end of the anti-interference filter interface 2. The output end of the interference filtering interface 2 is connected with the input end of the centralized data collector 3 .

[0014] Such as figure 2 As shown, the anti-jamming filter interface 2 includes a resistor and a capacitor, the resistor is connected in series with the capacitor, and the...

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Abstract

The invention discloses an anti-interference filtering device for a grounding ring current. The device comprises a grounding ring current monitoring mutual inductor and a concentrated data collector; an anti-interference filtering interface is arranged between the grounding ring current monitoring mutual inductor and the concentrated data collector; an output end of the grounding ring current monitoring mutual inductor is connected with an input end of the anti-interference filtering interface, and an output end of the anti-interference filtering interface is connected with an input end of the concentrated data collector. The device can help solve a problem that the grounding ring current monitoring mutual inductor is instable in output, stable output of the concentrated data collector can be realized, grounding current signals can be accurately restored, and precision of a whole monitoring system can be improved.

Description

technical field [0001] The invention relates to the field of smart grid online monitoring equipment, in particular to an anti-interference filtering device which can be used for ground circulation. Background technique [0002] With the rapid development of power grid construction and the widespread use of power cables, the problems of cable insulation are also increasing, so the demand for insulation performance testing of new cables or existing cables is increasingly strong. The ground wire current monitoring transformers used in traditional ground loop current monitoring equipment have more or less problems with unstable signals or electromagnetic interference, resulting in inaccurate measurement results. This design is to make up for this defect, to achieve accurate measurement of ground circulation. Contents of the invention [0003] Aiming at the problems existing in the prior art, the present invention provides a method that can solve the problem of unstable output...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12G01R19/00G01R15/18
CPCG01R15/18G01R19/0092G01R31/1272
Inventor 朱俊高建王磊
Owner JIANGSU JUNLONG ELECTRIC TECH
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