CN213633583U - Transformer substation protection screen pressure plate high-efficiency voltage measuring instrument - Google Patents
Transformer substation protection screen pressure plate high-efficiency voltage measuring instrument Download PDFInfo
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- CN213633583U CN213633583U CN202022284837.7U CN202022284837U CN213633583U CN 213633583 U CN213633583 U CN 213633583U CN 202022284837 U CN202022284837 U CN 202022284837U CN 213633583 U CN213633583 U CN 213633583U
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Abstract
The utility model discloses a high-efficient voltage measurement appearance of transformer substation's protection screen clamp plate, include: the device comprises a direct-current voltmeter V1, a direct-current voltmeter V2, a direct-current voltmeter V3, a potential test pen A, a potential test pen B and a jointing clamp; the positive electrodes of the direct-current voltmeter V1 and the direct-current voltmeter V3 are connected to the potential test pen A; the negative electrodes of the direct-current voltmeter V1 and the direct-current voltmeter V2 are connected to the jointing clamp; the positive electrode of the direct-current voltmeter V2 and the negative electrode of the direct-current voltmeter V3 are both connected to the potential test pen B; through the design of loop connection of the voltage meters and the binding posts, the three voltage meters can simultaneously display the voltage to ground of the pile head on the pressing plate, the voltage to ground of the pile head under the pressing plate and the voltage between the pile head under the pressing plate; in the measuring process, only one person needs to operate the upper pile head and the lower pile head of the two potentiometric measuring pens to measure the pressure plate, the required three data can be displayed on a screen of the device, the judgment and analysis can be intuitively carried out, and the possibility of misjudgment caused by memory errors is avoided.
Description
Technical Field
The utility model relates to a transformer substation's protection screen clamp plate measures technical field, concretely relates to transformer substation's protection screen clamp plate high-efficient voltage measurement appearance.
Background
When the current transformer substation operating personnel carry out switching operation, the operation on the secondary equipment is mainly to switch on or off the protective pressing plate of the protective screen of the secondary equipment. The protective pressing plate is a bridge and a link of the relay protection device in connection with external wiring, and whether the protective pressing plate is correctly put into the bridge or the link is related to the function of the relay protection device and whether an outlet can normally play a role, so that the protective pressing plate is very important. The protective pressure plate can be divided into a functional pressure plate and an outlet pressure plate according to the position of the protective pressure plate connected to the secondary loop. When a primary circuit breaker corresponding to the relay protection device is in a switching-on position, a high internal resistance voltmeter is needed to measure the voltages of the upper pile head and the lower pile head of the pressing plate to the ground and the voltage between the upper pile head and the lower pile head before the pressing plate is put into protection.
At present, the transformer substation operating personnel adopt a universal meter to measure the voltage to ground of the upper pile head and the lower pile head of the protection pressing plate and the voltage between the upper pile head and the lower pile head. Need respectively hold two pieces of positive and negative universal meter pen-shape meters of both hands alone in the operation process, the universal meter is held to another people hand, cuts the universal meter to direct current voltage shelves, divides the cubic altogether to measure, is respectively: measuring the pile head voltage on the pressing plate for the first time, connecting a red pen of the universal meter with the pile head on the pressing plate, and grounding a black pen; measuring the voltage of the lower pile head of the pressing plate for the second time, connecting a red pen of the universal meter with the lower pile head of the pressing plate, and grounding a black pen; and thirdly, measuring the voltage between the upper pile head and the lower pile head of the pressing plate, connecting the red meter pen with the upper pile head of the pressing plate, and connecting the black meter pen with the lower pile head of the pressing plate. Three measurements were memorized and then combined for comparative analysis.
Such a measurement method has the following problems: firstly, the operation is complicated, and the operation needs to be carried out three times for measuring one pressing plate; secondly, manpower is wasted, and two persons are needed to cooperate to operate; and thirdly, judgment errors are easy to occur, and three times of voltage measurement need to be memorized by people for comparison and analysis.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the personnel when mainly solving the transformer substation operation personnel and carrying out secondary equipment protection clamp plate operation are more, and the measurement process is complicated, and the problem that the judgement error rate is high reduces the probability of manual operation judgement error for realizing simple and convenient operating procedure, the utility model provides a transformer substation protection screen clamp plate high-efficiency voltage measuring apparatu.
The utility model discloses a following technical scheme realizes:
the utility model provides a high-efficient voltage measurement appearance of transformer substation's protection screen clamp plate, include: the device comprises a direct-current voltmeter V1, a direct-current voltmeter V2, a direct-current voltmeter V3, a potential test pen A, a potential test pen B and a jointing clamp;
the positive electrodes of the direct-current voltmeter V1 and the direct-current voltmeter V3 are connected to the potential test pen A; the negative electrodes of the direct-current voltmeter V1 and the direct-current voltmeter V2 are connected to the jointing clamp; the positive pole of the direct-current voltmeter V2 and the negative pole of the direct-current voltmeter V3 are both connected to the potential test pen B.
The further optimization scheme is that the device further comprises a shell, wherein the direct-current voltmeter V1, the direct-current voltmeter V2 and the direct-current voltmeter V3 are positioned inside the shell; the shell is provided with a binding post A, a binding post B and a binding post C;
the positive electrodes of the direct-current voltmeter V1 and the direct-current voltmeter V3 are connected to the inner side of the binding post A, and the potential test pen A is connected to the outer side of the binding post A;
the positive electrode of the direct current voltmeter V2 and the negative electrode of the direct current voltmeter V3 are connected to the inner side of the binding post B, and the potential test pen B is connected to the outer side of the binding post B;
the negative electrodes of the direct-current voltmeter V1 and the direct-current voltmeter V2 are connected to the inner side of the binding post C, and the binding post C is clamped on the outer side of the binding post C.
The further optimized scheme is that a display screen A, a display screen B and a display screen C are arranged on the shell; the display screen A displays the reading of the direct current voltmeter V1, the display screen B displays the reading of the direct current voltmeter V2, and the display screen C displays the reading of the direct current voltmeter V3.
The further optimization scheme is that the direct current voltmeter V1, the direct current voltmeter V2 and the direct current voltmeter V3 adopt active voltmeters with the measuring range of +/-300V.
The further optimization scheme is that the shell further comprises a charging interface, and the Type of the charging interface is USB Type-C.
The working principle of the scheme is as follows: the voltage measuring instrument body is provided with three liquid crystal displays arranged above three wiring terminals at the front part of the main body of the device, one wiring terminal passes through a wire body and a wiring clamp and is used for being connected with the ground potential, and the other two testing external terminals are respectively connected with a potential testing pen through the wire body and are used for measuring the upper end and the lower end of a protective pressing plate.
The voltage measuring instrument device internally comprises 3 active direct current voltmeters, and when the wiring clamp is grounded and two potential measuring pens measure the upper pile head and the lower pile head of the pressing plate by performing loop connection design on the three voltmeters and the three binding posts, the three voltmeters respectively and simultaneously display the voltage of the upper pile head of the pressing plate to the ground, the voltage of the lower pile head of the pressing plate to the ground and the voltage between the upper pile head and the lower pile head of the pressing plate; in the measuring process, only one person needs to operate the upper pile head and the lower pile head of the two potentiometric measuring pens to measure the pressure plate, the required three data can be displayed on a screen of the device, the judgment and analysis can be intuitively carried out, and the possibility of misjudgment caused by memory errors is avoided.
When the potential test pen A measures the pile head on the pressing plate:
because the positive pole of the direct-current voltmeter V1 is connected with the potential test pen A, and the negative pole is connected with the jointing clamp, the direct-current voltmeter V1 measures the voltage of the pile head on the pressing plate to the ground;
the positive electrode of the direct-current voltmeter V2 is connected with the potential test pen B, and the negative electrode of the direct-current voltmeter V2 is connected with the jointing clamp, so that the voltage of the pile head under the pressing plate to the ground is measured;
because the positive pole of the direct current voltmeter V3 is connected with the potential test pen B, and the negative pole is connected with the potential test pen A, the direct current voltmeter V3 is measured as the voltage between the upper pile head and the lower pile head of the pressing plate.
Compared with the prior art, the utility model, following advantage and beneficial effect have:
the utility model provides a high-efficient voltage measurement appearance of transformer substation protection screen clamp plate, through carrying out the loop connection design to three voltmeter and three terminal, when realizing that the binding clip ground connection, two potentiometre measuring pens measure the upper and lower pile head of clamp plate, three voltmeter shows the voltage of pile head on the clamp plate to the ground voltage, the voltage of pile head under the clamp plate to the ground voltage, the clamp plate between the upper and lower pile head respectively simultaneously; in the measuring process, only one person needs to operate the upper pile head and the lower pile head of the two potentiometric measuring pens to measure the pressure plate, the required three data can be displayed on a screen of the device, the judgment and analysis can be intuitively carried out, and the possibility of misjudgment caused by memory errors is avoided.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention.
In the drawings:
FIG. 1 is a schematic connection diagram of a high-efficiency voltage measuring instrument;
FIG. 2 is a diagram of a high efficiency voltage measurement instrument;
FIG. 3 is a connection diagram of an embodiment of the high-efficiency voltage measuring instrument.
In the drawings:
the device comprises a shell, a 2-display screen A, a 3-display screen B, a 4-display screen C, a 5-wiring terminal A, a 6-potential test pen A, a 7-potential test pen B, an 8-wiring clip, a 9-charging interface, a 10-wiring terminal B and an 11-wiring terminal C.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.
Example 1
As shown in fig. 1 and 2, an efficient voltage measuring instrument for a protective screen of a transformer substation comprises: the device comprises a direct-current voltmeter V1, a direct-current voltmeter V2, a direct-current voltmeter V3, a potential test pen A6, a potential test pen B7 and a jointing clamp 8;
the positive electrodes of the direct-current voltmeter V1 and the direct-current voltmeter V3 are connected to the potential test pen A; the negative electrodes of the direct-current voltmeter V1 and the direct-current voltmeter V2 are connected to the jointing clamp; the positive pole of the direct-current voltmeter V2 and the negative pole of the direct-current voltmeter V3 are both connected to the potential test pen B.
The high-efficiency voltage measuring instrument further comprises a shell 1, wherein the direct-current voltmeter V1, the direct-current voltmeter V2 and the direct-current voltmeter V3 are positioned inside the shell 1; the shell is provided with a binding post A5, a binding post B7 and a binding post C8;
the positive electrodes of the direct-current voltmeter V1 and the direct-current voltmeter V3 are connected to the inner side of the binding post A5, and the potential test pen A5 is connected to the outer side of the binding post A5;
the positive electrode of the direct current voltmeter V2 and the negative electrode of the direct current voltmeter V3 are connected to the inner side of the binding post B10, and the potential test pen B7 is connected to the outer side of the binding post B10;
the negative electrodes of the direct current voltmeter V1 and the direct current voltmeter V2 are connected to the inner side of the terminal C11, and the wiring clamp is connected to the outer side of the terminal C11.
The shell is also provided with a display screen A2, a display screen B3 and a display screen C4; the display screen A2 displays the reading of the direct current voltmeter V1, the display screen B3 displays the reading of the direct current voltmeter V2, and the display screen C4 displays the reading of the direct current voltmeter V3.
The direct-current voltmeter V1, the direct-current voltmeter V2 and the direct-current voltmeter V3 adopt active voltmeters with the measuring range of +/-300V.
Taking a 500kV circuit protection device (model: RCS-931E)1LP 15012 switch A phase trip outlet 1 pressure plate as an example, when in operation, a jointing clamp of the voltage measuring instrument is connected to the ground potential, a tester holds a potential test pen A and a potential test pen B, the potential test pen A contacts the upper end of the protection pressure plate, the potential test pen B contacts the lower end of the protection pressure plate, 3 data are displayed on a screen of the device, namely-110V (upper end of the protection pressure plate), 0V (lower end of the protection pressure plate) and 0V (between the upper end and the lower end of the protection pressure plate), and the tester can quickly judge that the voltage between the upper end and the lower end of the pressure plate is correct and can be put into the device.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (5)
1. The utility model provides a high-efficient voltage measurement appearance of transformer substation's protection screen clamp plate which characterized in that includes: the device comprises a direct-current voltmeter V1, a direct-current voltmeter V2, a direct-current voltmeter V3, a potential test pen A, a potential test pen B and a jointing clamp;
the positive electrodes of the direct-current voltmeter V1 and the direct-current voltmeter V3 are connected to the potential test pen A; the negative electrodes of the direct-current voltmeter V1 and the direct-current voltmeter V2 are connected to the jointing clamp; the positive pole of the direct-current voltmeter V2 and the negative pole of the direct-current voltmeter V3 are both connected to the potential test pen B.
2. The transformer substation protection screen pressure plate high-efficiency voltage measuring instrument according to claim 1, further comprising a casing, wherein the direct current voltmeter V1, the direct current voltmeter V2 and the direct current voltmeter V3 are positioned inside the casing; the shell is provided with a binding post A, a binding post B and a binding post C;
the positive electrodes of the direct-current voltmeter V1 and the direct-current voltmeter V3 are connected to the inner side of the binding post A, and the potential test pen A is connected to the outer side of the binding post A;
the positive electrode of the direct current voltmeter V2 and the negative electrode of the direct current voltmeter V3 are connected to the inner side of the binding post B, and the potential test pen B is connected to the outer side of the binding post B;
the negative electrodes of the direct-current voltmeter V1 and the direct-current voltmeter V2 are connected to the inner side of the binding post C, and the binding post C is clamped on the outer side of the binding post C.
3. The transformer substation protection screen pressure plate high-efficiency voltage measuring instrument according to claim 2, wherein a display screen A, a display screen B and a display screen C are further arranged on the shell; the display screen A displays the reading of the direct current voltmeter V1, the display screen B displays the reading of the direct current voltmeter V2, and the display screen C displays the reading of the direct current voltmeter V3.
4. The transformer substation protection screen pressure plate high-efficiency voltage measuring instrument according to claim 1, wherein the direct current voltmeter V1, the direct current voltmeter V2 and the direct current voltmeter V3 adopt active voltmeters with the measuring range of +/-300V.
5. The efficient voltage measuring instrument for the protective screen pressing plate of the transformer substation as claimed in claim 2, wherein the housing further comprises a charging interface, and the Type of the charging interface is USB Type-C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022284837.7U CN213633583U (en) | 2020-10-14 | 2020-10-14 | Transformer substation protection screen pressure plate high-efficiency voltage measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022284837.7U CN213633583U (en) | 2020-10-14 | 2020-10-14 | Transformer substation protection screen pressure plate high-efficiency voltage measuring instrument |
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| Publication Number | Publication Date |
|---|---|
| CN213633583U true CN213633583U (en) | 2021-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022284837.7U Active CN213633583U (en) | 2020-10-14 | 2020-10-14 | Transformer substation protection screen pressure plate high-efficiency voltage measuring instrument |
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| Country | Link |
|---|---|
| CN (1) | CN213633583U (en) |
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- 2020-10-14 CN CN202022284837.7U patent/CN213633583U/en active Active
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