CN215986453U - Auxiliary tool for checking and accepting insulation monitoring device based on leakage current principle - Google Patents
Auxiliary tool for checking and accepting insulation monitoring device based on leakage current principle Download PDFInfo
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- CN215986453U CN215986453U CN202121952373.0U CN202121952373U CN215986453U CN 215986453 U CN215986453 U CN 215986453U CN 202121952373 U CN202121952373 U CN 202121952373U CN 215986453 U CN215986453 U CN 215986453U
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- insulation monitoring
- monitoring device
- lifting ring
- leakage current
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 23
- 238000009413 insulation Methods 0.000 title abstract description 24
- 238000007689 inspection Methods 0.000 claims abstract description 7
- 239000011810 insulating material Substances 0.000 claims 1
- 238000012360 testing method Methods 0.000 abstract description 12
- 238000010998 test method Methods 0.000 abstract description 6
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model provides an auxiliary tool for acceptance inspection of an insulation monitoring device based on a leakage current principle, which relates to the technical field of insulation monitoring and comprises the following components: the lifting ring, the switch, the connecting rod, the battery jar and the U-shaped block; the lifting ring is connected with the connecting rod; the lifting ring is connected with the inner side of the bottom of the U-shaped block in a contact way. The device provided by the application can effectively avoid the power loss risk of a direct current system caused by grounding short circuit of a certain direct current branch circuit, can also avoid the risk of misoperation or refusal of a relay protection device, is convenient to operate, improves the existing test method, and is favorable for improving the test quality and efficiency of the device.
Description
Technical Field
The utility model relates to the technical field of insulation monitoring, in particular to an auxiliary tool for acceptance inspection of an insulation monitoring device based on a leakage current principle.
Background
The insulation monitoring device of the direct current system of the transformer substation is a device used for monitoring the grounding of the direct current system and carrying out grounding line selection, and when any branch direct current has poor insulation to the ground, an alarm grounding branch can be given to the monitoring device on a liquid crystal display screen so as to solve the problem of operation and maintenance personnel. In the old method for performing the grounding test on the insulation monitoring device, the direct current branches to be tested are grounded in sequence, and the connection between the direct current branches and the communication line is checked to be correct. However, in the dc system still in operation, the branch grounding test is performed with the risk of causing a dc idle open short circuit trip, a two-point grounding, and a malfunction or misoperation of the relay protection device.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides an auxiliary tool for acceptance inspection of an insulation monitoring device based on a leakage current principle, which is convenient to operate, improves the existing test method, and is beneficial to improving the test quality and efficiency of the device.
The utility model provides an auxiliary tool for acceptance inspection of an insulation monitoring device based on a leakage current principle, which comprises: the lifting ring, the switch, the connecting rod, the battery jar and the U-shaped block;
the lifting ring is connected with the connecting rod;
the lifting ring is connected with the inner side of the bottom of the U-shaped block in a contact manner.
Preferably, the U-shaped block is internally conductive;
the embodiment of the utility model has the following beneficial effects: the utility model provides an auxiliary tool for acceptance inspection of an insulation monitoring device based on a leakage current principle, which comprises: the lifting ring, the switch, the connecting rod, the battery jar and the U-shaped block; the lifting ring is connected with the connecting rod; the lifting ring is connected with the inner side of the bottom of the U-shaped block in a contact way. The device provided by the application can effectively avoid the power loss risk of a direct current system caused by grounding short circuit of a certain direct current branch circuit, can also avoid the risk of misoperation or refusal of a relay protection device, is convenient to operate, improves the existing test method, and is favorable for improving the test quality and efficiency of the device.
Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a side view of an acceptance aid for an insulation monitoring device based on a leakage current principle according to an embodiment of the present invention;
fig. 2 is a front view of an acceptance aid of the insulation monitoring device according to the leakage current principle according to the embodiment of the present invention;
fig. 3 is a top view of an acceptance aid for an insulation monitoring device based on the leakage current principle according to an embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
At present, the old method for performing the grounding test of the insulation monitoring device needs to sequentially ground the direct current branches to be tested and check the connection of the direct current branches and the communication line. However, in the dc system still in operation, the branch grounding test is performed with the risk of causing a dc idle open short circuit trip, a two-point grounding, and a malfunction or misoperation of the relay protection device. The insulation monitoring device based on the leakage current principle can simulate the grounding of a certain branch by adopting the current flowing in a direct current high-precision CT opening, and therefore, the insulation monitoring device based on the leakage current principle provided by the embodiment of the utility model can effectively avoid the power loss risk of a direct current system caused by the grounding short circuit of a certain direct current branch and also can avoid the risk of misoperation or rejection of a relay protection device, the operation is convenient, the existing test method is improved, and the test quality and the test efficiency of the device are improved.
For the convenience of understanding the embodiment, first, a detailed description will be given to an auxiliary acceptance tool of an insulation monitoring device based on the leakage current principle disclosed in the embodiment of the present invention.
The utility model provides an auxiliary tool for acceptance inspection of an insulation monitoring device based on a leakage current principle, which comprises: the lifting ring, the switch, the connecting rod, the battery jar and the U-shaped block;
the lifting ring is connected with the connecting rod;
the lifting ring is connected with the inner side of the bottom of the U-shaped block in a contact manner.
Specifically, in the embodiment provided by the utility model, the lifting ring can move the connecting rod up and down to open the opening of the U-shaped block, so that the insulation monitoring device based on the leakage current principle is sleeved with an external alternating current transformer, and meanwhile, due to the existence of the battery jar, the insulation monitoring device based on the leakage current principle generates leakage current.
The test tool is suitable for conducting grounding line selection test on the insulation monitoring device based on the leakage current principle, can be applied to the insulation monitoring device for acceptance check, and can also be applied to work such as direct current system transformation. The test method can avoid the risks of tripping of a direct current system, incorrect protection and the like, is convenient to operate, improves the existing test method, and is beneficial to improving the test quality and efficiency of the device.
Unless specifically stated otherwise, the relative steps, numerical expressions, and values of the components and steps set forth in these embodiments do not limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (2)
1. The utility model provides an insulating monitoring devices inspection appurtenance based on leak current principle which characterized in that includes: the lifting ring, the switch, the connecting rod, the battery jar and the U-shaped block;
the lifting ring is connected with the connecting rod;
the lifting ring is connected with the inner side of the bottom of the U-shaped block in a contact manner.
2. The tool of claim 1,
the U-shaped block is internally conductive;
the connecting rod is made of an insulating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121952373.0U CN215986453U (en) | 2021-08-19 | 2021-08-19 | Auxiliary tool for checking and accepting insulation monitoring device based on leakage current principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121952373.0U CN215986453U (en) | 2021-08-19 | 2021-08-19 | Auxiliary tool for checking and accepting insulation monitoring device based on leakage current principle |
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| Publication Number | Publication Date |
|---|---|
| CN215986453U true CN215986453U (en) | 2022-03-08 |
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| CN202121952373.0U Active CN215986453U (en) | 2021-08-19 | 2021-08-19 | Auxiliary tool for checking and accepting insulation monitoring device based on leakage current principle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113608158A (en) * | 2021-08-19 | 2021-11-05 | 国网天津市电力公司 | Auxiliary tool for checking and accepting insulation monitoring device based on leakage current principle |
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2021
- 2021-08-19 CN CN202121952373.0U patent/CN215986453U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113608158A (en) * | 2021-08-19 | 2021-11-05 | 国网天津市电力公司 | Auxiliary tool for checking and accepting insulation monitoring device based on leakage current principle |
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