CN115372669A - Binding post structure and wireless nuclear phase device of relay protection - Google Patents
Binding post structure and wireless nuclear phase device of relay protection Download PDFInfo
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- CN115372669A CN115372669A CN202211016530.6A CN202211016530A CN115372669A CN 115372669 A CN115372669 A CN 115372669A CN 202211016530 A CN202211016530 A CN 202211016530A CN 115372669 A CN115372669 A CN 115372669A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0416—Connectors, terminals
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R25/00—Arrangements for measuring phase angle between a voltage and a current or between voltages or currents
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/18—Indicating phase sequence; Indicating synchronism
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
- H01R4/4854—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a wire spring
- H01R4/4863—Coil spring
- H01R4/4872—Coil spring axially compressed to retain wire end
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
- H01R9/22—Bases, e.g. strip, block, panel
- H01R9/24—Terminal blocks
- H01R9/2416—Means for guiding or retaining wires or cables connected to terminal blocks
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- General Physics & Mathematics (AREA)
- Connections Arranged To Contact A Plurality Of Conductors (AREA)
Abstract
The invention discloses a wiring terminal structure and a relay protection wireless nuclear phase device, wherein the wiring terminal structure comprises a shell, wherein the surface of the shell is provided with a threading hole; and the connecting assembly comprises a wiring piece arranged in the shell, pressing pieces arranged on two sides of the wiring piece, and an unlocking piece arranged on the top of the wiring piece. The relay protection wireless phase checking device comprises an alternating current signal generator and a wireless phase checking instrument. The invention can not only automatically compress the wiring when detecting the equipment, but also meet the wiring of different types, and in addition, the invention can rapidly complete the secondary polarity correctness check of the total station equipment by a single person, thereby saving a large amount of manpower and reducing the working intensity.
Description
Technical Field
The invention relates to the technical field of power equipment detection, in particular to a wiring terminal structure and a relay protection wireless phase checking device.
Background
At present, a relay protection device is an important guarantee for safe operation of primary equipment, once errors such as phase sequence, phase, polarity and the like occur, the safe operation of the primary equipment is influenced, a power system is possibly paralyzed in severe cases, and the safe and reliable operation of the power system equipment can be guaranteed only by rapidly and correctly eliminating secondary circuit faults. In the installation process of a newly-built project of a transformer substation, relay protection personnel are very complicated in links and difficult to control in the process of checking the correctness of the wiring of a current and voltage secondary circuit in the installation process of the project, operation misoperation, operation rejection and the like of new equipment can occur, even defects after operation are difficult to discover (such as open circuit of a standby current winding, wrong current phase sequence, wrong polarity and the like), and great potential safety hazards are brought to the safe operation of primary equipment.
Traditional relay protection voltage, current phase sequence, phase place, polarity detection judge need alone ascend a height and open voltage transformer, current transformer body terminal box, alone protect the ladder, alone detect at circuit breaker terminal box and judge, nuclear phase work seems comparatively complicated, loaded down with trivial details, consuming time, work load is big, checks with the mode of oral biography phone to two people of line moreover, makes mistakes very easily, brings fatal potential safety hazard for equipment safe operation. In addition, the current-rising equipment carrying a heavy current-rising device with large capacity can be different from hundreds of jin, and the current-rising device has limitation in use, and the current output by the generator can only be tested by a current transformer and cannot flow through a transformer and a voltage transformer for testing. In addition, after the newly built or expanded primary equipment is put into operation, a capacitor load in a substation is carried, secondary polarity detection is carried out by using a phase volt-ampere meter, if wrong secondary polarity is encountered during operation, incorrect relay protection action tripping can be caused, the success rate of operation is directly influenced, and relay protection professionals also use a large amount of time to call fault record wave analysis to judge whether the operation equipment has faults or not so as to eliminate the risk of the operation equipment and then can continue to execute the next operation scheme. The operation success rate is low, if the time spent for the occurrence of the secondary polarity error condition is very much, relay protection personnel have no bottom in the operation process center.
The wireless phase checking device developed by the invention can complete all-around detection and judgment of correctness of phase sequence, phase, polarity and current-voltage transformation ratio of primary and secondary loops of voltage and current loops such as a main transformer bushing current transformer, a line current transformer, a bus voltage transformer and the like at one time before the new equipment is put into operation or the technical improvement equipment is put into operation, can timely find defects of the secondary loops, and ensures safe and reliable operation of the newly-built and technical improvement equipment. Meanwhile, the device can also be used as an operation device for remote multipoint wireless nuclear phase, such as: three-point wireless nuclear phase of strange land circuit breaker terminal box on three sides of main transformer has greatly improved the work efficiency, the rate of accuracy of nuclear phase. And binding post on the device can satisfy multiple type wiring demand, is suitable for different operational environment.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.
The invention is provided in view of the above and/or the problems existing in the existing connecting terminal structure and the relay protection wireless phase checking device.
It is therefore an object of the present invention to provide a terminal structure T which not only automatically compresses the wiring but also satisfies different types of wiring.
In order to solve the technical problems, the invention provides the following technical scheme: a wiring terminal structure T comprises a shell, wherein a threading hole is formed in the surface of the shell; and the connecting assembly comprises a wiring piece arranged in the shell, pressing pieces arranged on two sides of the wiring piece, and an unlocking piece arranged on the top of the wiring piece.
As a preferable aspect of the terminal structure T of the present invention, wherein: the wiring piece including set up in the inside below of casing base, and set up in the inside wire holder of base, the base with casing fixed connection, the wire holder with base sliding fit.
As a preferable aspect of the terminal structure T of the present invention, wherein: the top central point of connection terminal puts and still is provided with the slot, the side of connection terminal still is provided with the baffle, the baffle with connection terminal fixed connection.
As a preferable aspect of the terminal structure T of the present invention, wherein: the wiring piece still including set up in inside inserted bar of slot, set up in inserted bar outlying briquetting and fixed plate, and set up in the briquetting with first spring between the fixed plate, the briquetting with inserted bar sliding fit, the fixed plate with inserted bar fixed connection, the both ends of first spring respectively with the fixed plate with briquetting fixed connection still is provided with the jack on the inserted bar.
As a preferable aspect of the terminal structure T of the present invention, wherein: the pressing piece comprises a second spring arranged on one side of the wire holder and mounting boxes arranged on two sides of the base, two ends of the second spring are respectively fixedly connected with the base and the wire holder, and a telescopic groove is further formed in each mounting box.
As a preferable aspect of the terminal structure T of the present invention, wherein: the compressing piece further comprises a telescopic strip arranged in the telescopic groove and a third spring arranged on the side edge of the telescopic strip, and a moving groove is further formed in the other side edge of the telescopic strip; the pressing piece further comprises a moving strip arranged in the moving groove and a fourth spring arranged at the end of the moving strip, a vertical rod is further arranged at the top of the moving strip, a pressing rod is further arranged on the side face of the top of the vertical rod, and a first clamping block is further arranged on the side face of the moving strip.
As a preferable aspect of the terminal structure T of the present invention, wherein: the pressing piece further comprises a wedge-shaped block arranged on the side edge of the pressing block and second clamping blocks arranged on two sides of the wire holder, and the second clamping blocks are in sliding fit with the wire holder.
As a preferable aspect of the terminal structure T of the present invention, wherein: the unlocking piece comprises a fifth spring arranged at the top of the fixing plate and an unlocking rod arranged in the fifth spring, and two ends of the fifth spring are fixedly connected with the fixing plate and the shell respectively;
the unlocking piece further comprises a sixth spring arranged between the wedge-shaped block and the second clamping block, and two ends of the sixth spring are fixedly connected with the wedge-shaped block and the second clamping block respectively.
Another object of the present invention is to provide a relay protection wireless phase checking device, which can fully cover an "ac signal source" to all branches (current, voltage transformer, main transformer bushing current transformer, breaker bushing current transformer, etc.) of the primary equipment of the transformer substation, and a relay protection person can quickly check and judge the correctness of the secondary polarity of the primary equipment of the total station in a very short time by only holding the slave machine of the wireless phase checking device for testing.
In order to solve the technical problems, the invention provides the following technical scheme: a relay protection wireless phase checking device comprises the wiring terminal structure and also comprises an alternating current signal generator, wherein the surface of the alternating current signal generator is provided with the wiring terminal structure; the wireless nuclear phase instrument comprises a wireless nuclear phase instrument main machine and a wireless nuclear phase instrument slave machine.
As a preferable scheme of the relay protection wireless phase checking device, the invention comprises: the alternating current signal generator further comprises a power supply ammeter, a power supply voltmeter, an alternating current signal regulator, an alternating current power supply air switch, a start button and a stop button which are arranged on the surface of the alternating current signal generator.
The invention has the beneficial effects that: according to the wiring terminal structure and the relay protection wireless phase checking device, the test wire can be automatically clamped during wiring, and different test wire joint types can be met. In addition, the relay protection wireless nuclear phase device can fully cover an alternating current signal source to all branches of primary equipment of a transformer substation, relay protection personnel can quickly check and judge the correctness of the secondary polarity of the primary equipment of the total station in a very short time by only holding a wireless nuclear phase instrument slave machine for testing, and the relay protection device is different from the traditional heavy current rising equipment in that each section of equipment needs to be reconnected and an instrument needs to be arranged, and the primary wiring is needed, so that the working efficiency is greatly improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor. Wherein:
fig. 1 is an external structural view of a terminal structure.
Fig. 2 is an internal schematic view of the terminal structure.
Fig. 3 is a schematic diagram of the internal structure of the terminal structure.
Fig. 4 is a schematic view of a part of a terminal structure.
Fig. 5 is a schematic diagram of a base portion of the terminal structure.
Fig. 6 is a top view of a base portion of a terminal structure.
Fig. 7 is a schematic view of a mounting box of a terminal structure and the internal structure thereof.
Fig. 8 is a schematic view of the terminal structure inserted into a cylindrical wire.
Fig. 9 is a schematic diagram of the overall structure of an alternating current signal generator in the relay protection wireless phase checking device.
Fig. 10 is a view of an application scenario of a relay protection wireless phase checking device.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanying figures of the present invention are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Example 1
Referring to fig. 1 and 2, a first embodiment of the present invention provides a terminal structure T, which includes a housing 100 and a connecting member 200, wherein the terminal structure is mounted on a device through the housing 100, and a wire is tightly connected and automatically pressed through the connecting member 200.
Specifically, the casing 100 has a threading hole 101a formed in a surface thereof. The surface of the housing 100 is made of an insulating material, and the threading hole 101a is used for the threading.
The connecting assembly 200 comprises a wiring piece 201 arranged inside the housing 100, pressing pieces 202 arranged on two sides of the wiring piece 201, and an unlocking piece 203 arranged on the top of the wiring piece 201. The terminal 201 can be connected to an external terminal or directly to an electric wire. The pressing member 202 can secure the connection, and the unlocking member 203 unlocks the disconnection of the electric wire.
When the wire connecting device is used, the wire connecting end is inserted into the threading hole 101a in the shell 100, the wire connecting piece 201 in the shell 100 can firstly connect the wires, then the pressing piece 202 can automatically press the wires, and if the wire connecting device needs to be detached, the wires can be pulled out only by operating the unlocking piece 203. This structure not only can carry out automatic compressing tightly to the wiring and can also be applicable to the wiring end of different grade type.
Example 2
Referring to fig. 3 to 8, there is shown a second embodiment of the present invention, which is based on the previous embodiment.
Specifically, the wire connecting element 201 includes a base 201a disposed below the inside of the housing 100 and a wire connecting seat 201b disposed inside the base 201a, the base 201a is fixedly connected to the housing 100, and the wire connecting seat 201b is slidably engaged with the base 201 a. The base 201a is provided with a slot at the top, and the wire holder 201b can move in the slot. The wire holder 201b and the base 201a are made of metal conductive material and can be electrically connected with the outside.
Preferably, the center of the top of the wire holder 201b is further provided with a slot 201b-1, the side of the wire holder 201b is further provided with a baffle 201b-2, and the baffle 201b-2 is fixedly connected with the wire holder 201 b. The slot 201b-1 is circular, and the baffle 201b-2 is connected with the wire holder 201b integrally to push the baffle 201b-2 to move, so that the wire holder 201b can move together. The baffle 201b-2 is mainly used to block external terminals or rigid wires.
Preferably, the wire connecting piece 201 further comprises an insertion rod 201c arranged inside the slot 201b-1, a pressing block 201d and a fixing plate 201c-1 arranged on the periphery of the insertion rod 201c, and a first spring 201e arranged between the pressing block 201d and the fixing plate 201c-1, wherein the pressing block 201d is in sliding fit with the insertion rod 201c, the fixing plate 201c-1 is fixedly connected with the insertion rod 201c, two ends of the first spring 201e are respectively fixedly connected with the fixing plate 201c-1 and the pressing block 201d, and the insertion rod 201c is further provided with a jack 201c-2. The connection place of the external electric wire or the wiring terminal is between the pressing block 201d and the wiring seat 201b, the fixing plate 201c-1 and the inserted link 201c are integrally connected, and the pressing block 201d is annular and is sleeved on the inserted link 201c and can move up and down. The first spring 201e is a compression spring and is used for pressing the pressing block 201d downwards to ensure that the external terminal is pressed tightly. An arc-shaped notch is formed in the pressing block 201d, so that a round single-core wire can be conveniently inserted.
Preferably, the pressing member 202 includes a second spring 202a disposed on one side of the wire holder 201b, and a mounting box 202b disposed on two sides of the base 201a, two ends of the second spring 202a are respectively fixedly connected to the base 201a and the wire holder 201b, and a telescopic slot 202b-1 is further disposed in the mounting box 202 b. The second spring 202a is a compression spring, and is acted on by the second spring 202a when the wire holder 201b moves in the slot of the base 201 a. The telescopic groove 202b-1 is opened not only at the side of the mounting box 202b but also at the top thereof.
Preferably, the pressing member 202 further includes a telescopic bar 202c disposed inside the telescopic slot 201b-1, and a third spring 202d disposed on a side of the telescopic bar 202c, and the other side of the telescopic bar 202c is further provided with a moving slot 202c-1 and a moving slot 202c-1; the third spring 202d is a compression spring, and the retractable strip 202c is long, and not only has a moving slot 202c-1 on its side, but also has a slot on its top to facilitate the movement of the moving strip 202 e.
The pressing member 202 further comprises a moving bar 202e arranged in the moving groove 202c-1 and a fourth spring 202f arranged at the end of the moving bar 202e, the top of the moving bar 202e is further provided with a vertical bar 202e-1, the side surface of the top of the vertical bar 202e-1 is further provided with a pressure bar 202e-2, and the side surface of the moving bar 202e is further provided with a first fixture block 202e-3. The fourth spring 202f is an extension spring for returning the moving bar 202 e. When the first latch 202e-3 is pulled, the moving bar 202e and the vertical bar 202e-1 drive the pressing bar 202e-2 to move.
Further, the pressing element 202 further includes a wedge block 202g disposed on a side of the pressing block 201d, and second engaging blocks 202h disposed on two sides of the wire holder 201b, and the second engaging blocks 202h are slidably engaged with the wire holder 201 b. The wedge block 202g is matched with the pressure lever 202e-2, when the pressure lever 202e-2 horizontally moves to the position of the wedge block 202g, the wedge block 202g is extruded to vertically move downwards, so that the pressure block 201d is driven to move downwards, and the external terminal and the wire holder 201b are further pressed tightly.
Further, the unlocking piece 203 comprises a fifth spring 203a arranged at the top of the fixing plate 201c-1 and an unlocking rod 203b arranged inside the fifth spring 203a, and two ends of the fifth spring 203a are fixedly connected with the fixing plate 201c-1 and the housing 100 respectively; the unlocking rod 203b is fixedly connected with the fixing plate 201c-1, the fifth spring 203a is a compression spring, the elastic coefficient of the compression spring is larger than that of the first spring 201e, when the external terminal needs to be pulled out, the unlocking rod 203b needs to be lifted upwards with force, so that the fixing plate 201c-1 drives the pressing block 201d to move upwards together through the first spring 201e, the pressing block 201d is separated from the external terminal, and the external terminal can be pulled out at this time.
The unlocking member 203 further includes a sixth spring 203c disposed between the wedge block 202g and the second latch 202h, and both ends of the sixth spring 203c are fixedly connected to the wedge block 202g and the second latch 202h, respectively. The sixth spring 203c is a light spring, and is stretchable and compressible, and when the pressing piece 201d moves upward, the second latch 202h is carried by the sixth spring 203c to move upward.
When the terminal is used, during wiring, an external terminal is inserted into the housing 100, and the bottom edge of the pressing piece 201d has a certain radian, so that the pressing piece 201d is jacked up when the terminal is inserted, and the terminal is pressed between the pressing piece 201d and the wire holder 201 b.
When the terminal is of a type with an opening in an electrode plate, the insertion action is blind insertion, so that the terminal pushes against the insertion rod 201c to drive the wire holder 201b to move forward continuously during continuous insertion, the second fixture blocks 202h at two ends of the wire holder 201b are blocked by the first fixture blocks 202e-3 on the side surfaces of the movable strip 202e in the movement process, and the end surfaces of the first fixture blocks 202e-3 and the second fixture blocks 203h are both smooth surfaces, so that the movable strip 202e moves towards two sides, at the moment, the second fixture blocks 202h can cross over the first fixture blocks 202e-3, and the movable strip 202e can reset under the action of the third spring 202d after crossing. When the terminal stops being inserted, under the action of the second spring 202a, the wire holder 201b rebounds, at this time, because the other surfaces of the first fixture block 202e-3 and the second fixture block 202h are not smooth surfaces, the wire holder 201b can drive the moving strip 202e to move together in the original direction, at this time, the pressing rod 202e-2 can also move together, when the pressing rod 202e-2 moves to the position of the wedge block 202g on the two sides of the pressing block 201d, the wedge block 202g is pressed to vertically move downwards, so that the pressing block 201d is further pressed downwards, and thus, the terminal is pressed by the springs at the two positions of the first spring 201e and the second spring 202a, and the connection and fastening of the terminal are ensured.
When the connection needs to be released, the unlocking lever 203b is simply lifted up, and the pressing piece 201d and the parts above the pressing piece are all lifted up, so that the terminal is released. In addition, during the process of lifting up, the second latch 202h is also lifted up by the sixth spring 203c, so that the first latch 202e-3 is out of the way, and the moving bar 202e is reset by the third spring 202d for the next use.
In addition, for the electrode plate terminal with the shape of a circular ring, the unlocking rod 203b can be lifted first and then inserted, and the baffle 201b-2 on the side edge of the wire holder 201b can also block the unlocking rod, so that the wire holder 201b is driven to move, and the actions are realized. And for the terminal with only a single battery cell, the terminal can also pass through the insertion hole 201c-2 on the insertion rod 201c and abut against the baffle plate 201 b-2. The device not only realizes the automatic clamping of the wiring terminal, but also can be suitable for various terminals.
Example 3
Referring to fig. 9 and 10, the embodiment provides a relay protection wireless phase checking device. A relay protection wireless phase checking device comprises a wiring terminal structure, an alternating current signal generator 300 and a wireless phase checking instrument 400.
Specifically, the ac signal generator 300 further includes a power supply ammeter 301, a power supply voltmeter 302, an ac signal regulator 303, an ac power supply idle switch 304, a start button 305, and a stop button 306 disposed on a surface thereof.
The self-checking operation steps are as follows: before testing, the connecting terminal structure T of the input end of the alternating current power supply of the alternating current signal generator 300 is connected to a 380V alternating current power supply, a data plug 401a on the wireless phase checking instrument host 401 is inserted into a data interface 307 on the alternating current signal generator 300, an alternating current power supply air switch 304 is switched on, the starting button 305 is pressed, the alternating current signal generator 300 is checked to be normally started, and the wireless phase checking instrument host 401 is opened to check that the 'reference phasor' is correct.
After a transformer substation is newly built or a technical improvement device is completed, phase checking work is required to be carried out in order to ensure the correctness of secondary polarity, phase sequence and phase of primary equipment. According to fig. 8, a 380V ac power supply is connected to a terminal structure T at an input end of an ac power supply, a test line 500 is connected to a primary device at a power end of a device to be tested, a data plug 401a on a host 401 of a wireless phase checking instrument is inserted into a data interface 307 on an ac signal generator 300, an ac power supply air switch 304 is closed, the ac signal generator 300 is checked to be normally started, the ac signal generator 300 automatically outputs an ac signal source at this time, the host 401 of the wireless phase checking instrument can be switched on to check that "reference phasor" is correct, it is ensured that after the host 401 of the wireless phase checking instrument and the slave 402 of the wireless phase checking instrument communicate normally, a relay protector holds the slave 402 of the wireless phase checking instrument, and it is possible to arbitrarily test secondary polarities, phase sequences and phases of a current transformer 501 at a power supply side, a bushing current transformer 502 of a circuit breaker, a bushing current transformer 503 of a main transformer, a secondary winding of a voltage transformer 504 at a load side and a backup winding, and it is also possible to judge whether a secondary loop of a primary device secondary current transformer 501, a bushing current transformer 502 of a main transformer 502 of a circuit breaker, a bushing circuit breaker and a bushing circuit transformer 504 of a load side voltage transformer 503 of a load side circuit.
According to fig. 1, when the ac signal generator 300 provides an ac signal to the primary devices of the power supply side current transformer 501, the breaker bushing current transformer 502, and the main transformer bushing current transformer 503, the relay protection personnel can perform a short circuit test at the secondary windings of the power supply side current transformer 501, the breaker bushing current transformer 502, and the main transformer bushing current transformer 503, and can judge whether the current secondary circuit is grounded at multiple points through the current display of the relay protection device. For example: after the head end and the tail end of the A-phase current secondary winding of the power supply side current transformer 501 are short-circuited, the power supply side line protection device displays that the A-phase secondary current is about 0mA, and can judge that the A-phase secondary circuit has no multi-point grounding phenomenon, so that one-point grounding is ensured. On the contrary, after the head and the tail of the phase current secondary winding of the power supply side current transformer 501A are short-circuited, the power supply side line protection device can judge that the multipoint grounding condition exists in the phase current secondary winding of the power supply side current transformer 501A when the phase current secondary winding of the power supply side is displayed at 10 mA.
The device can fully cover an alternating current signal source to all branch currents, voltage transformers, main transformer sleeve current transformers, circuit breaker sleeve current transformers and the like of primary equipment of the transformer substation, relay protection personnel only need to hold a wireless nuclear phase instrument slave machine for testing, and correctness of secondary polarity of the primary equipment of the total station can be rapidly checked and judged in a very short time.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. A binding post structure T which characterized in that: comprises the steps of (a) preparing a substrate,
a housing (100) provided with a threading hole (101 a) on the surface thereof; and (c) a second step of,
the connecting assembly (200) comprises a wiring piece (201) arranged inside the shell (100), pressing pieces (202) arranged on two sides of the wiring piece (201), and unlocking pieces (203) arranged on the top of the wiring piece (201).
2. The terminal structure T of claim 1, wherein: the wiring piece (201) comprises a base (201 a) arranged below the inside of the shell (100) and a wiring seat (201 b) arranged inside the base (201 a), the base (201 a) is fixedly connected with the shell (100), and the wiring seat (201 b) is in sliding fit with the base (201 a).
3. The terminal structure T of claim 2, wherein: the top center position of connection terminal (201 b) still is provided with slot (201 b-1), the side of connection terminal (201 b) still is provided with baffle (201 b-2), baffle (201 b-2) with connection terminal (201 b) fixed connection.
4. A terminal structure T according to claim 3, wherein: the wiring piece (201) further comprises an inserting rod (201 c) arranged inside the slot (201 b-1), a pressing block (201 d) and a fixing plate (201 c-1) arranged on the periphery of the inserting rod (201 c), and a first spring (201 e) arranged between the pressing block (201 d) and the fixing plate (201 c-1), wherein the pressing block (201 d) is in sliding fit with the inserting rod (201 c), the fixing plate (201 c-1) is fixedly connected with the inserting rod (201 c), two ends of the first spring (201 e) are respectively fixedly connected with the fixing plate (201 c-1) and the pressing block (201 d), and a jack (201 c-2) is further arranged on the inserting rod (201 c).
5. The terminal structure T of claim 4, wherein: the pressing piece (202) comprises a second spring (202 a) arranged on one side of the wire holder (201 b) and mounting boxes (202 b) arranged on two sides of the base (201 a), two ends of the second spring (202 a) are fixedly connected with the base (201 a) and the wire holder (201 b) respectively, and a telescopic groove (202 b-1) is further formed in the mounting box (202 b).
6. The terminal structure T of claim 5, wherein: the pressing piece (202) further comprises a telescopic bar (202 c) arranged in the telescopic groove (201 b-1) and a third spring (202 d) arranged on one side edge of the telescopic bar (202 c), the other side edge of the telescopic bar (202 c) is further provided with a moving groove (202 c-1), and the moving groove (202 c-1);
the pressing piece (202) further comprises a moving strip (202 e) arranged in the moving groove (202 c-1) and a fourth spring (202 f) arranged at the end of the moving strip (202 e), a vertical rod (202 e-1) is further arranged at the top of the moving strip (202 e), a pressing rod (202 e-2) is further arranged on the side face of the top of the vertical rod (202 e-1), and a first clamping block (202 e-3) is further arranged on the side face of the moving strip (202 e).
7. A terminal structure T according to any one of claims 4, 5 or 6, wherein: the pressing piece (202) further comprises a wedge-shaped block (202 g) arranged on the side of the pressing block (201 d) and second clamping blocks (202 h) arranged on two sides of the wire holder (201 b), and the second clamping blocks (202 h) are in sliding fit with the wire holder (201 b).
8. The terminal structure T of claim 7, wherein: the unlocking piece (203) comprises a fifth spring (203 a) arranged at the top of the fixing plate (201 c-1) and an unlocking rod (203 b) arranged inside the fifth spring (203 a), and two ends of the fifth spring (203 a) are respectively fixedly connected with the fixing plate (201 c-1) and the shell (100);
the unlocking piece (203) further comprises a sixth spring (203 c) arranged between the wedge block (202 g) and the second fixture block (202 h), and two ends of the sixth spring (203 c) are fixedly connected with the wedge block (202 g) and the second fixture block (202 h) respectively.
9. The utility model provides a wireless nuclear phase device of relay protection which characterized in that: comprising the terminal structure according to claims 1 to 8, further comprising,
an alternating current signal generator (300) with a wiring terminal structure T on the surface;
the wireless nuclear phase instrument (400) comprises a wireless nuclear phase instrument host (401) and a wireless nuclear phase instrument slave (402).
10. The connection terminal structure and the relay protection wireless phase checking device according to claim 9, wherein: the alternating current signal generator (300) further comprises a power supply ammeter (301), a power supply voltmeter (302), an alternating current signal regulator (303), an alternating current power supply air switch (304), a start button (305) and a stop button (306) which are arranged on the surface of the alternating current signal generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211016530.6A CN115372669A (en) | 2022-08-24 | 2022-08-24 | Binding post structure and wireless nuclear phase device of relay protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211016530.6A CN115372669A (en) | 2022-08-24 | 2022-08-24 | Binding post structure and wireless nuclear phase device of relay protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115372669A true CN115372669A (en) | 2022-11-22 |
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ID=84068497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211016530.6A Pending CN115372669A (en) | 2022-08-24 | 2022-08-24 | Binding post structure and wireless nuclear phase device of relay protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115372669A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117250415A (en) * | 2023-09-19 | 2023-12-19 | 国网安徽省电力有限公司祁门县供电公司 | Protection device and protection system with nuclear phase function |
-
2022
- 2022-08-24 CN CN202211016530.6A patent/CN115372669A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117250415A (en) * | 2023-09-19 | 2023-12-19 | 国网安徽省电力有限公司祁门县供电公司 | Protection device and protection system with nuclear phase function |
| CN117250415B (en) * | 2023-09-19 | 2024-03-08 | 国网安徽省电力有限公司祁门县供电公司 | Protection device and protection system with nuclear phase function |
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