CN114089060A - Transformer substation hard pressing plate state self-diagnosis detection box and self-diagnosis method thereof - Google Patents
Transformer substation hard pressing plate state self-diagnosis detection box and self-diagnosis method thereof Download PDFInfo
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- CN114089060A CN114089060A CN202111329719.6A CN202111329719A CN114089060A CN 114089060 A CN114089060 A CN 114089060A CN 202111329719 A CN202111329719 A CN 202111329719A CN 114089060 A CN114089060 A CN 114089060A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
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Abstract
The invention provides a self-diagnosis detection box for the state of a hard pressing plate of a transformer substation, which comprises two metal screw rods which are symmetrically arranged, wherein a pressing plate switching mechanism is arranged between the upper parts of the two metal screw rods, a self-diagnosis detection box is arranged between the lower parts of the metal screw rods, a detection circuit formed by connecting a diode, a button battery, an LED lamp and a voltage type relay in series is arranged in the self-diagnosis detection box, and the detection circuit, the two metal screw rods and the pressing plate switching mechanism form a closed current path. The invention has simple structure, ingenious design and convenient use, and the method switches on and off the detection circuit by opening and closing the metal connecting sheet of the hard pressing plate, lights or closes the LED lamp and visually reflects the contact condition of the metal connecting sheet of the hard pressing plate and the metal screw rod by closing the normally open node of the relay so as to assist operation and maintenance personnel to judge the input and exit states of the hard pressing plate and whether the contact condition of the metal connecting sheet of the hard pressing plate is good or not, find the hidden danger of the switching-in and switching-out errors and poor contact of the hard pressing plate in time, reduce the refusing action of the circuit breaker, enlarge the accident range and improve the operation reliability of a power grid.
Description
Technical Field
The invention relates to a self-diagnosis detection box for the state of a hard pressing plate of a transformer substation and a self-diagnosis method thereof.
Background
The hard pressing plate is also called a protection connecting piece, is widely applied to a relay protection screen cabinet of a transformer substation and a local control cabinet of a circuit breaker, can form an obvious fracture in a switching-on and switching-off loop of the circuit breaker, and is used for artificially controlling the switching-on and switching-off of the switching-on and switching-off loop of the circuit breaker. Therefore, the correct throwing and returning of the hard pressure plate and good contact are a key ring for realizing the protection function of the protection device.
At present, in a transformer substation, the on-off and daily running state monitoring of the hard pressing plate are both manually carried out on site. After the device is put into use, whether the contact is good or not and whether the putting-in and putting-out are in place or not are judged by naked eyes, and no auxiliary judgment and monitoring means are provided. After the protective pressing plate is put into the device, the situation that the protective pressing plate is not actually connected is difficult to find in a visual mode. Meanwhile, the hard pressing plate can cause the problems of loosening of the fastening bolt or poor contact of the connecting piece under strong vibration of opening and closing of the circuit breaker and the like, if hidden dangers are discovered and eliminated in time, the circuit breaker can not work when the power grid fault is caused, and the accident power failure range is enlarged.
Disclosure of Invention
The invention improves the problems, namely the invention aims to provide the self-diagnosis detection box for the hard pressing plate state of the transformer substation, which monitors the pressing plate on-off state in real time on line after the metal connecting sheet of the hard pressing plate is put into operation, self-diagnoses the connection condition of the pressing plate in real time on line and displays the diagnosis result, can prevent the metal connecting sheet from generating the hidden trouble of abnormal disconnection such as poor contact after the metal connecting sheet is put into operation, reduces the failure of a breaker, enlarges the accident range and improves the operation reliability of a power grid.
The invention is formed in such a way, the device comprises two metal screws which are symmetrically arranged, a pressing plate switching mechanism is arranged between the upper parts of the two metal screws, a self-diagnosis detection box is arranged between the lower parts of the metal screws, a detection circuit formed by connecting a diode, a button cell, an LED lamp and a voltage type relay in series is arranged in the self-diagnosis detection box, and the detection circuit, the two metal screws and the pressing plate switching mechanism form a closed current path.
Further, the clamp plate is thrown and is moved back mechanism and is included that the metal links the piece and the cover is equipped with the insulating sheath on the metal links the piece, the insulating sheath top is provided with insulating handle, metal screw rod upper portion has set gradually upper portion fastening nut, upper portion fastening gasket, lower part fastening gasket, clamp plate base and lower part fastening nut from top to bottom, the metal links the piece both ends and all fixes between the upper portion fastening gasket and the lower part fastening gasket of corresponding metal screw rod, the metal links piece one end and one of them metal screw rod normal running fit, the metal links the piece other end and contacts or separates with another metal screw rod.
Further, self-diagnosis detection box both ends are provided with the current conducting plate, the metal screw lower part has set gradually first hexagon nut, second hexagon nut and third hexagon nut from top to bottom, the current conducting plate cover is just fixed on corresponding metal screw between first hexagon nut and second hexagon nut, gasket and spring washer have set gradually from top to bottom between second hexagon nut and the third hexagon nut.
Further, the conductive plate is provided with a mounting hole.
Furthermore, a button battery cabin is arranged on one side of the self-diagnosis detection box, and an idle contact is arranged on the other side of the self-diagnosis detection box.
Further, the self-diagnosis method of the transformer substation hard pressing plate state self-diagnosis detection box comprises the following steps: (1) connecting a self-diagnosis detection box to the lower parts of the two metal screws; (2) by rotating the metal connecting sheet, two ends of the metal connecting sheet are bridged on the upper parts of the two metal screw rods, and the upper fastening nut and the lower fastening nut are screwed tightly; (3) the diode, the button battery, the LED lamp and the voltage type relay which are installed in the self-diagnosis detection box in series are connected in series to form a detection circuit, and a closed current path is formed by the two metal screws and the metal connecting sheet; (4) checking whether the LED lamp is lighted or not and whether a normally open contact of the voltage type relay is closed or not, and confirming that the metal connecting plate is well contacted with the two metal screw rods; (5) if the LED lamp is lighted and the normally open contact of the voltage type relay is closed, the metal connecting plate is in the input state, and the metal connecting piece is in good contact with the metal screw rod; if the LED lamp is not lighted or the normally open contact of the voltage type relay is not closed after the metal connecting sheet is put into the metal connecting sheet, the surface of the metal connecting sheet of the hard pressing plate is in the putting state at the surface, but the metal connecting sheet is not well contacted with the metal screw rod and is actually in the disconnection state; (6) unscrewing upper portion fastening nut and lower part fastening nut, connecting the piece with one of them metal screw rod separation through insulating handle with the metal, form obvious fracture, look over the LDE lamp and whether go out, whether voltage type relay normally open contact is opened, if the LED lamp goes out, voltage type relay normally open contact is opened, show that the metal links the piece and is in the exit state.
Compared with the prior art, the invention has the following beneficial effects: the device has the advantages of simple structure and reasonable design, can monitor the switching-on and switching-off state of the pressing plate in real time on line after the hard pressing plate is switched in, can perform on-line self-diagnosis on the switching-on condition of the switched-in pressing plate in real time, can prevent the hard pressing plate from generating abnormal disconnection hidden troubles such as poor contact after the hard pressing plate is switched in, reduces the refusing of the circuit breaker, enlarges the accident range and improves the operation reliability of a power grid.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a top view of the self-diagnostic test kit according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of the wiring of the self-diagnostic test kit according to the embodiment of the present invention;
in the figure: 1-metal screw, 2-self-diagnosis detection box, 21-diode, 22-button cell, 23-LED lamp, 24-voltage relay, 25-conductive plate, 26-mounting hole, 27-button cell bin, 28-hollow joint, 3-metal connecting piece, 4-insulating sheath, 5-insulating handle, 6-upper fastening nut, 7-upper fastening gasket, 8-lower fastening gasket, 9-pressing plate base, 10-lower fastening nut, 11-first hexagon nut, 12-second hexagon nut, 13-third hexagon nut, 14-gasket, 15-spring gasket;
a-protection device outlet contact, B-negative terminal.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Example (b): as shown in fig. 1 to 3, in the present embodiment, a self-diagnosis detection box for a hard pressing plate state of a transformer substation is provided, which includes two metal screws 1 symmetrically arranged, a pressing plate moving mechanism is arranged between upper portions of the two metal screws, and a self-diagnosis detection box 2 is arranged between lower portions of the metal screws, and is used for online monitoring a moving state of the hard pressing plate in real time and online self-diagnosing a switch-on condition of the inserted hard pressing plate in real time; the self-diagnosis detection box is internally provided with a detection circuit formed by connecting a diode 21, a button cell 22, an LED lamp 23 and a voltage type relay 24 in series, and the detection circuit, the two metal screws and the pressing plate switching mechanism form a closed current path.
One end of the current path can be connected with the outlet contact A of the protection device, and the other end of the current path is connected with the negative terminal B.
In this embodiment, clamp plate is thrown and is moved back mechanism and is included that the metal links piece 3 and the cover is equipped with insulating sheath 4 on the metal links piece, the insulating sheath top is provided with insulating handle 5, metal screw rod upper portion has set gradually upper portion fastening nut 6, upper portion fastening gasket 7, lower part fastening gasket 8, clamp plate base 9 and lower part fastening nut 10 from top to bottom, the metal links the piece both ends and all fixes between the upper portion fastening gasket and the lower part fastening gasket of corresponding metal screw rod, the metal links piece one end and one of them metal screw rod normal running fit, the metal links the piece other end and contacts or separates with another metal screw rod.
Through adjusting the tightness of the upper fastening nut and the lower fastening nut, one end of the metal connecting piece is rotated as a rotating point, so that the other end of the metal connecting piece is contacted with or separated from the metal screw rod, and the closing effect is realized.
In this embodiment, self-diagnosis detection box both ends are provided with current conducting plate 25, the metal screw lower part has set gradually first hexagon nut 11, second hexagon nut 12 and third hexagon nut 13 from top to bottom, the current conducting plate cover is on corresponding metal screw and fixes between first hexagon nut and second hexagon nut, gasket 14 and spring shim 15 have set gradually from top to bottom between second hexagon nut and the third hexagon nut.
First hexagon nut, second hexagon nut and third hexagon nut, gasket and spring shim can be used for inserting the hard clamp plate in the circuit breaker operating circuit.
In this embodiment, the conductive plate has a mounting hole 26.
In the embodiment, a button battery bin 27 is arranged on one side of the self-diagnosis detection box and used for installing and replacing a button battery;
and two idle contact points 28 are arranged on the other side of the self-diagnosis detection box and can be used for sending the metal connecting sheet state of the hard pressing plate to an intelligent terminal or other acquisition units.
The LED lamp is positioned in front of the self-diagnosis detection box and used for displaying the metal connection sheet on-off state of the hard pressing plate in real time.
The above
In this embodiment, in operation: (1) connecting a self-diagnosis detection box to the lower parts of the two metal screws; (2) by rotating the metal connecting sheet, two ends of the metal connecting sheet are bridged on the upper parts of the two metal screw rods, and the upper fastening nut and the lower fastening nut are screwed tightly; (3) the diode, the button battery, the LED lamp and the voltage type relay which are installed in the self-diagnosis detection box in series are connected in series to form a detection circuit, and a closed current path is formed by the two metal screws and the metal connecting sheet; (4) checking whether the LED lamp is lighted or not and whether a normally open contact of the voltage type relay is closed or not, and confirming that the metal connecting plate is well contacted with the two metal screw rods; (5) if the LED lamp is lighted and the normally open contact of the voltage type relay is closed, the metal connecting plate is in the input state, and the metal connecting piece is in good contact with the metal screw rod; if the LED lamp is not lighted or the normally open contact of the voltage type relay is not closed after the metal connecting sheet is put into the metal connecting sheet, the surface of the metal connecting sheet of the hard pressing plate is in the putting state at the surface, but the metal connecting sheet is not well contacted with the metal screw rod and is actually in the disconnection state; (6) loosening the upper fastening nut and the lower fastening nut, separating the metal connecting sheet from one of the metal screw rods through the insulating handle to form an obvious fracture, checking whether the LDE lamp is extinguished and whether a normally open contact of the voltage type relay is opened, and if the LED lamp is extinguished and the voltage type relay coil is powered off, opening the normally open contact of the voltage type relay to indicate that the metal connecting sheet is in a withdrawing state; at the moment, the coil of the button battery, the diode, the LED lamp and the voltage type relay in the self-diagnosis detection box has no conduction loop.
Any embodiment disclosed herein above is meant to disclose, unless otherwise indicated, all numerical ranges disclosed as being preferred, and any person skilled in the art would understand that: the preferred ranges are merely those values which are obvious or representative of the technical effect which can be achieved. Since the numerical values are too numerous to be exhaustive, some of the numerical values are disclosed in the present invention to illustrate the technical solutions of the present invention, and the above-mentioned numerical values should not be construed as limiting the scope of the present invention.
Meanwhile, if the invention as described above discloses or relates to parts or structural members fixedly connected to each other, the fixedly connected parts can be understood as follows, unless otherwise stated: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).
In addition, terms used in any technical solutions disclosed in the present invention to indicate positional relationships or shapes include approximate, similar or approximate states or shapes unless otherwise stated.
Any part provided by the invention can be assembled by a plurality of independent components or can be manufactured by an integral forming process.
Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention and not to limit the same; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (6)
1. The transformer substation hard pressing plate state self-diagnosis detection box is characterized by comprising two metal screw rods which are symmetrically arranged, a pressing plate switching mechanism is arranged between the upper portions of the two metal screw rods, a self-diagnosis detection box is arranged between the lower portions of the two metal screw rods, a detection circuit formed by diodes, button batteries, LED lamps and voltage type relays in series is arranged in the self-diagnosis detection box, and the detection circuit, the two metal screw rods and the pressing plate switching mechanism form a closed current path.
2. The transformer substation hard pressing plate state self-diagnosis detection box according to claim 1, characterized in that the pressing plate throwing and withdrawing mechanism comprises a metal connecting plate and an insulating sheath sleeved on the metal connecting plate, an insulating handle is arranged above the insulating sheath, an upper fastening nut, an upper fastening gasket, a lower fastening gasket, a pressing plate base and a lower fastening nut are sequentially arranged on the upper portion of the metal screw from top to bottom, two ends of the metal connecting plate are fixed between the upper fastening gasket and the lower fastening gasket of the corresponding metal screw, one end of the metal connecting plate is in running fit with one of the metal screws, and the other end of the metal connecting plate is in contact with or separated from the other metal screw.
3. The transformer substation hard pressing plate state self-diagnosis detection box according to claim 2, wherein conductive plates are arranged at two ends of the self-diagnosis detection box, a first hexagon nut, a second hexagon nut and a third hexagon nut are sequentially arranged on the lower portion of the metal screw from top to bottom, the conductive plates are sleeved on the corresponding metal screws and fixed between the first hexagon nut and the second hexagon nut, and a gasket and a spring gasket are sequentially arranged between the second hexagon nut and the third hexagon nut from top to bottom.
4. The transformer substation hard pressing plate state self-diagnosis detection box according to claim 3, wherein the conductive plate is provided with mounting holes.
5. The transformer substation hard pressing plate state self-diagnosis detection box according to claim 3, wherein a button battery bin is arranged on one side of the self-diagnosis detection box, and an idle contact is arranged on the other side of the self-diagnosis detection box.
6. A self-diagnosis method using the transformer substation hard pressing plate state self-diagnosis detection box according to claim 3, characterized by comprising the steps of: (1) connecting a self-diagnosis detection box to the lower parts of the two metal screws; (2) by rotating the metal connecting sheet, two ends of the metal connecting sheet are bridged on the upper parts of the two metal screw rods, and the upper fastening nut and the lower fastening nut are screwed tightly; (3) the diode, the button battery, the LED lamp and the voltage type relay which are installed in the self-diagnosis detection box in series are connected in series to form a detection circuit, and a closed current path is formed by the two metal screws and the metal connecting sheet; (4) checking whether the LED lamp is lighted or not and whether a normally open contact of the voltage type relay is closed or not, and confirming that the metal connecting plate is well contacted with the two metal screw rods; (5) if the LED lamp is lighted and the normally open contact of the voltage type relay is closed, the metal connecting plate is in the input state, and the metal connecting piece is in good contact with the metal screw rod; if the LED lamp is not lighted or the normally open contact of the voltage type relay is not closed after the metal connecting sheet is put into the metal connecting sheet, the surface of the metal connecting sheet of the hard pressing plate is in the putting state at the surface, but the metal connecting sheet is not well contacted with the metal screw rod and is actually in the disconnection state; (6) unscrewing upper portion fastening nut and lower part fastening nut, connecting the piece with one of them metal screw rod separation through insulating handle with the metal, form obvious fracture, look over the LDE lamp and whether go out, whether voltage type relay normally open contact is opened, if the LED lamp goes out, voltage type relay normally open contact is opened, show that the metal links the piece and is in the exit state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111329719.6A CN114089060A (en) | 2021-11-11 | 2021-11-11 | Transformer substation hard pressing plate state self-diagnosis detection box and self-diagnosis method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111329719.6A CN114089060A (en) | 2021-11-11 | 2021-11-11 | Transformer substation hard pressing plate state self-diagnosis detection box and self-diagnosis method thereof |
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| CN114089060A true CN114089060A (en) | 2022-02-25 |
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| CN202111329719.6A Pending CN114089060A (en) | 2021-11-11 | 2021-11-11 | Transformer substation hard pressing plate state self-diagnosis detection box and self-diagnosis method thereof |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60214272A (en) * | 1984-04-10 | 1985-10-26 | Takaoka Ind Ltd | Confirming device for continuity of grounding device |
| CN104647070A (en) * | 2013-11-19 | 2015-05-27 | 西安众智惠泽光电科技有限公司 | Manual spiral fastening device |
| CN206967107U (en) * | 2017-07-03 | 2018-02-06 | 哈尔滨市安宇迪机械制造有限公司 | A kind of adjustable pressing plate for aeronautical product processing |
| CN107993413A (en) * | 2017-12-05 | 2018-05-04 | 北京工业大学 | A kind of door folding condition intelligent detection device |
| CN111313358A (en) * | 2020-03-18 | 2020-06-19 | 国网湖南省电力有限公司 | Double-contact scribing type relay protection pressing plate with state acquisition function |
| CN112737108A (en) * | 2020-12-16 | 2021-04-30 | 国电南瑞科技股份有限公司 | Transformer substation pressure plate state online monitoring system and method |
| CN113113969A (en) * | 2021-04-09 | 2021-07-13 | 深圳供电局有限公司 | Intelligent remote control pressing plate with tripping outlet detection function and relay protection screen cabinet |
-
2021
- 2021-11-11 CN CN202111329719.6A patent/CN114089060A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60214272A (en) * | 1984-04-10 | 1985-10-26 | Takaoka Ind Ltd | Confirming device for continuity of grounding device |
| CN104647070A (en) * | 2013-11-19 | 2015-05-27 | 西安众智惠泽光电科技有限公司 | Manual spiral fastening device |
| CN206967107U (en) * | 2017-07-03 | 2018-02-06 | 哈尔滨市安宇迪机械制造有限公司 | A kind of adjustable pressing plate for aeronautical product processing |
| CN107993413A (en) * | 2017-12-05 | 2018-05-04 | 北京工业大学 | A kind of door folding condition intelligent detection device |
| CN111313358A (en) * | 2020-03-18 | 2020-06-19 | 国网湖南省电力有限公司 | Double-contact scribing type relay protection pressing plate with state acquisition function |
| CN112737108A (en) * | 2020-12-16 | 2021-04-30 | 国电南瑞科技股份有限公司 | Transformer substation pressure plate state online monitoring system and method |
| CN113113969A (en) * | 2021-04-09 | 2021-07-13 | 深圳供电局有限公司 | Intelligent remote control pressing plate with tripping outlet detection function and relay protection screen cabinet |
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