CN118566788B - Electric power system relay protection secondary circuit disconnection and connection calibrator - Google Patents
Electric power system relay protection secondary circuit disconnection and connection calibrator Download PDFInfo
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- CN118566788B CN118566788B CN202411059610.9A CN202411059610A CN118566788B CN 118566788 B CN118566788 B CN 118566788B CN 202411059610 A CN202411059610 A CN 202411059610A CN 118566788 B CN118566788 B CN 118566788B
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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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/58—Testing of lines, cables or conductors
- G01R31/60—Identification of wires in a multicore cable
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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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints
- G01R31/68—Testing of releasable connections, e.g. of terminals mounted on a printed circuit board
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Abstract
The application relates to the technical field of power system relay protection overhaul equipment, in particular to a secondary circuit disconnection and connection calibrator for a power system relay protection, which comprises a main connector and a slave connector, wherein the main connector and the slave connector are respectively and electrically connected with circuits at two ends of a secondary circuit terminal block; the main connector comprises a plurality of first connectors, and the auxiliary connector comprises second connectors which are connected with the first connectors in a one-to-one correspondence manner; each first connector and the second connector connected with the first connector are used for being connected with the circuits at two ends of one terminal of the secondary circuit terminal row; according to the secondary circuit disconnection and connection calibrator for the power system relay protection, the circuits at two ends of the secondary circuit terminal strip are subjected to one-to-one marking calibration through the uniqueness between each first connector and the second connector which is connected with the first connectors in one-to-one correspondence, measurement and analysis on secondary circuit resistance, voltage and the like are not needed, and the influence on electronic devices on the secondary circuit is avoided.
Description
Technical Field
The application relates to the technical field of power system relay protection overhaul equipment, in particular to a power system relay protection secondary circuit disconnection and connection calibrator.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The relay protection of the power system is used as a particularly important loop in the power system, after the relay protection of the power system fails, the core of a part of the secondary circuit needs to be disassembled before inspection, and after the relay protection inspection is finished, the secondary circuit needs to be recovered. The traditional method needs two people to check and mark before the protection secondary circuit part wire core is disassembled, after relay protection inspection is finished, the two people are required to recover the secondary circuit according to the record before the disassembly, and after the completion, the two people are required to check and verify again manually, namely, a large amount of manpower is wasted, the working efficiency is low, the problems of miswiring, wire leakage recovery and the like are easily caused, and the problems of great potential safety hazard exist, so that the safe and reliable operation of a power grid is influenced. The secondary circuit is not electrified and the connected electronic device is not electrified, so that the method is difficult to be applied by the technical means such as secondary circuit resistance, voltage detection and the like.
In view of the above, it is necessary to provide a secondary circuit disconnection and connection verifier for power system relay protection to solve the above-mentioned technical problems.
Disclosure of Invention
Based on the above technical problems, the application provides a secondary circuit disconnection and connection checker for a power system relay protection.
The application solves the problems existing in the prior art by adopting the technical scheme that:
the application provides a secondary circuit disconnection and connection calibrator for a power system relay protection, which comprises a main connector and a slave connector, wherein the main connector and the slave connector are respectively and electrically connected with circuits at two ends of a secondary circuit terminal block; the main connector comprises a plurality of first connectors, and the auxiliary connector comprises second connectors which are connected with the first connectors in a one-to-one correspondence manner; each first connector of the main connector is respectively connected with a test wire SI;
each first connector and the second connector connected with the first connector are used for being connected with the circuits at two ends of one terminal of the secondary circuit terminal row;
The first connector comprises a resistor R 1 to a resistor R 4, a relay KM, a triode VT and an electric indication light emitting diode LED 2, wherein one end of the resistor R 1 is simultaneously connected with one end of a coil of the relay KM and one end of the resistor R 4, and a common end connected with the resistor R 1 and the resistor R 4 is connected with one end line L 2 of a terminal after being LED out; the other end of the relay KM coil is connected with the collector electrode of the triode VT; the other end of the resistor R 1 is connected with the base electrode of the triode VT and one end of the resistor R 2 at the same time; the emitter of the triode VT is connected with one end of a resistor R 3, and the other end of the resistor R 3 is connected with the anode of an electric indication light-emitting diode (LED 2); the cathode of the electric indication light emitting diode LED 2 is connected with the other end of the resistor R 2 and grounded; the other end of the resistor R 4 is connected with a test line SI;
The second connector includes resistors R 5 to R 6 and a normal indication light emitting diode LED 1; the anode of the normal indication light emitting diode LED 1 is connected with one end of the resistor R 5 and then is connected with the other end line L 1 of the terminal; the cathode of the normal indication light emitting diode LED 1 is connected with one end of the resistor R 6; the other end of the resistor R 5 is connected with the other end of the resistor R 6 and then is connected with one end of a normally open auxiliary contact KM 1 of the relay KM, and the other end of the normally open auxiliary contact KM 1 of the relay KM is grounded.
Preferably, a normally closed auxiliary contact KT 1 of a time relay KT is also connected in series between the resistor R 1 and the resistor R 4;
The common end of the resistor R 1, the relay KM coil and the normally closed auxiliary contact KT 1 of the time relay KT is connected with one end of the other normally closed auxiliary contact KT 2 of the time relay KT;
the resistor R 4 is connected with the normally closed auxiliary contact KT 1 of the time relay KT and is connected with the positive electrode of the direct-current power supply E and one end of the coil of the time relay KT;
the negative electrode of the direct current power supply E is grounded;
the other end of the time relay KT coil is connected with one end of a normally closed auxiliary contact KM 2 of the relay KM;
The other end of the normally-closed auxiliary contact KM 2 of the relay KM is connected with the other end of the other normally-closed auxiliary contact KT 2 of the time relay KT and then is connected with one end line L 2 of the terminal.
Preferably, the main connector comprises a first sliding rail and a second sliding rail which are arranged in parallel, and a first connecting block and a second connecting block are respectively and fixedly arranged at two ends of the first sliding rail; the two ends of the first connecting block and the second connecting block are respectively connected with a compression screw in a threaded manner, and the main connector is fixed on the terminal block by screwing the compression screws;
a screw is arranged between the first slide rail and the second slide rail, one end of the screw is rotationally connected with the first slide rail, the other end of the screw penetrates through the second slide rail and then is fixedly connected with the screwing block, and the screw is in threaded connection with the second slide rail;
a plurality of first sliding blocks are arranged on the first sliding rail in a sliding manner, second sliding blocks which are arranged on the second sliding rail in a sliding manner are arranged between every two first sliding blocks, the second sliding blocks are of an inverted triangle structure, and the distance between every two adjacent first sliding blocks is controlled by controlling the depth of the second sliding blocks inserted between every two adjacent first sliding blocks;
A notch is formed in the middle of the first sliding rail, a first connecting wire is arranged on the first sliding block, and the first connecting wire is connected with one end, different from the end connected with the base electrode of the triode VT, of the resistor R 1; the first connecting wire is connected with a first connecting end, and the first connecting end is used for being connected with one end line L 2 of the terminal.
Preferably, a first sliding cavity is arranged in the middle of the first sliding rail, a top block is arranged in one side, close to the second connecting block, of the first sliding cavity in a sliding manner, a third spring is arranged between the top block and the second connecting block, and the top block is used for giving pressure to the first sliding block in the lateral direction under the action of the elastic force of the third spring;
The second sliding cavity is arranged in the middle of the second sliding rail, and a second sliding body matched with the second sliding cavity is arranged at the bottom of the second sliding block.
Preferably, the second connector comprises a second connection end for connection with a line detached from the other end of the terminal, the second connection end is fixedly connected with one end of a connection column, and the other end of the connection column is fixedly connected with the pressure-bearing rod; the pressure-bearing rod is arranged in the holding rod in a sliding manner, one end of the holding rod is fixedly connected with the rod bottom, the middle of the rod bottom is provided with a through hole, and the connecting column penetrates through the through hole and is in sliding connection with the rod bottom;
An accommodating cavity is formed between the bottom of the rod and the pressure-bearing rod and is formed outside the connecting column, a third spring is sleeved outside the connecting column, and the third spring is positioned in the accommodating cavity;
The pressure-bearing rod is connected with one end of a second connecting wire, and the other end of the second connecting wire is connected with the other end of a normally open auxiliary contact KM 1 of the second connector relay KM.
Preferably, a plurality of slide rail slide bars are arranged between the first slide rail and the second slide rail, one end of each slide rail slide bar is fixedly connected with the first slide rail, and the other end of each slide rail slide bar penetrates through the second slide rail and is in sliding connection with the second slide rail.
Preferably, the first springs are arranged above the first connecting blocks and the second connecting blocks at two ends of the second sliding rail, a plurality of first sliding rods are arranged around the first springs, one ends of the first sliding rods are fixedly connected with the second sliding rail, and the other ends of the first sliding rods are respectively connected with the first connecting blocks and the second connecting blocks in a sliding mode.
Preferably, the first sliding block is of a structure with a wide upper part and a narrow lower part, and pulleys are rotatably arranged at two ends of the top of the first sliding block; a wire passing hole is formed in the middle of the first sliding block, a metal rod penetrates through the wire passing hole, one end of the metal rod is fixedly connected with the first connecting wire, and the other end of the metal rod is fixedly connected with the first connecting end; a lantern ring is fixedly sleeved outside one side of the metal rod, which is close to the first connecting end, and the lantern ring is in sliding connection with the wire passing hole;
a wire passing cavity is formed between the metal rod and the wire passing hole, a second spring is arranged in the wire passing cavity, one end of the second spring is fixedly connected with the lantern ring, and the other end of the second spring is fixedly connected with the fixed plate;
the metal rod penetrates through the fixed plate and is connected with the fixed plate in a sliding manner;
the fixed plate is fixedly connected with the first sliding block through a fixed rod.
Preferably, the first sliding block is in sliding connection with the first sliding rail through a first sliding body;
The first sliding body comprises a connecting part fixedly connected with the first sliding block, and the connecting part is fixedly connected with the sliding part.
Preferably, the wire passing cavity passes through the connecting part and the sliding part;
the wire passing cavity is positioned right above the notch.
Compared with the prior art, the application has the beneficial effects that:
1. According to the secondary circuit disconnection and connection calibrator for the power system relay protection, the circuits at two ends of the secondary circuit terminal strip are subjected to one-to-one marking calibration through the uniqueness between each first connector and the second connector which is connected with the first connectors in one-to-one correspondence, measurement and analysis on secondary circuit resistance, voltage and the like are not needed, and the influence on electronic devices on the secondary circuit is avoided.
2. In practice, the voltage of the secondary circuit will affect the detection process, in the application, the characteristic that the secondary circuit is mostly direct current voltage if electricity exists (380V or higher voltage is needed by artificial power failure), if the voltage exists, the first connector firstly uses the resistor R 1 to limit the current, then uses the triode VT to amplify and detect, and uses the voltage to light the normal indication light emitting diode LED 1 and the electricity indication light emitting diode LED 2, so that an additional power supply is not needed, and the energy conservation and safety are realized.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application.
Figure 1 is a schematic diagram of the electrical principle of the secondary circuit disconnection and connection verifier of the power system of the present application in one embodiment,
Figure 2 is a schematic diagram of the electrical principle of the secondary circuit disconnection and connection verifier of the power system according to another embodiment of the present application,
FIG. 3 is a schematic diagram of the whole structure of the primary connector of the secondary circuit disconnection butt-joint verifier of the power system,
Figure 4 is an enlarged view of a portion of region a of figure 3,
Figure 5 is an enlarged view of a portion of region B of figure 3,
FIG. 6 is a schematic view of another overall structure of the primary connector of the secondary circuit disconnection-connection verifier of the power system of the present application in FIG. 3,
FIG. 7 is a schematic diagram of the overall structure of a first slider of the primary connector of the secondary circuit disconnection-connection verifier of the power system of the present application,
Figure 8 is a cross-sectional view of the interior of the first slider of the primary connector of the power system relay protection secondary circuit disconnect docking verifier of the present application of figure 7,
Figure 9 is a cross-sectional view of the first and second rails of the primary connector of the power system relay protection secondary circuit disconnection butt verifier of the present application,
Figure 10 is a schematic diagram of the overall structure of a second connector of the secondary circuit disconnection and connection verifier of the power system of the present application,
Figure 11 is an internal cross-sectional view of the power system relay protection secondary circuit disconnect abutment verifier of the present application from a second connector of the connector of figure 10,
Fig. 12 is a connection block diagram of a secondary circuit disconnection and connection checker for a relay protection system of the present application.
In the figure:
100. A first connector 200, a second connector 300, a connection flat cable 400, a master connector 500, a slave connector,
1. The first slide rail, 2, the second slide rail, 3, the second slide block, 4, the first slide block, 5, the first connecting block, 6, the second connecting block, 7, the hold-down screw, 8, the slide rail slide bar, 9, the screw, 10, the first connecting line, 11, the notch, 12, the first connecting end, 13, the upper opening, 14, the first spring, 15, the first slide bar, 16, the fixed plate, 17, the fixed rod, 18, the second spring, 19, the metal rod, 20, the lower opening, 21, the third spring, 22, the top block, 23, the first slide cavity, 24, the second slide cavity, 25, the second slide body, 26, the holding rod, 27, the pressure-bearing rod, 28, the second connecting line, 29, the second connecting end, 30, the accommodating cavity, 31, the fourth spring, 32, the connecting post, 33, the rod bottom,
40. The sliding part comprises a sliding part, 41, pulleys, 42, a sliding part, 43, a connecting part, 44 and a lantern ring.
Detailed Description
The application will be further described with reference to the drawings and examples.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments in accordance with the present disclosure. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, are merely relational terms determined for convenience in describing structural relationships of the various components or elements of the present disclosure, and do not denote any one of the components or elements of the present disclosure, and are not to be construed as limiting the present disclosure.
Referring to fig. 12, the secondary circuit disconnection and connection checker of the power system relay protection of the present application includes a master connector 400 and a slave connector 500 for electrically connecting with lines at both ends of a secondary circuit terminal block, respectively; the master connector 400 includes a plurality of first connectors 100, the slave connector 500 includes second connectors 200 connected to the first connectors 100 in a one-to-one correspondence, and the master connector 400 and the slave connector 500 are connected by a connection flat cable 300 in the figure; each first connector 100 of the main connector 400 is connected with a test line SI; in some embodiments, the test line is routed from the connection bus 300; each of the first connectors 100 and the second connector 200 connected thereto is for line connection with both ends of one terminal of the secondary circuit terminal block;
the principle of the relay protection secondary circuit disconnection and connection calibrator of the power system is as follows:
Each of the first connectors 100 and the second connector 200 connected in one-to-one correspondence with the first connector 100 has uniqueness. And the disassembly and the butt joint verification of the relay protection secondary circuit of the power system are realized under the condition of ensuring the uniqueness of the relay protection secondary circuit.
Since the voltage range required for lighting the normal indication light emitting diode LED 1 is fixed, in the present application, both the lighting of the normal indication light emitting diode LED 1 and the uniqueness of each of the first connectors 100 and the second connectors 200 correspondingly connected thereto are ensured, and the voltage required for lighting the normal indication light emitting diode LED 1 is ensured by dividing the voltage by using resistors having different resistance values but the same ratio of the resistance values by using the voltage dividing effect of the resistors, and the respective distinction is performed by using resistors having different resistance values.
For example: referring to fig. 1, in use, first connector 100 is first connected to one end line L 2 of one terminal, and if the connected terminal is charged, then LED 2 is turned on, at which time the other end line L 1 of the terminal is manually contacted by test line SI; since one end line L 2 of the terminal is charged, the normally closed auxiliary contact KT 2, the normally closed auxiliary contact KT 1、R4 form a path with the second connector 200 through the test line SI;
If the connected terminal is not electrified, the electrified indication light emitting diode LED 2 is not lighted, and at the moment, the other end line L 1 of the terminal is manually contacted by the test line SI, and then a direct current power supply E, a time relay KT, a normally closed auxiliary contact KM 2 and the second connector 200 form a passage;
If the resistances of the normal indication light emitting diode LED 1 are not considered, the voltages at the two ends of the normal indication light emitting diode LED 1 and the resistor R6 are divided by the series connection of the resistor R4, the resistor R5 and the resistor R 0 after the parallel connection of the resistor R6, and the proportion of the resistor R4 and the resistor R 0 is selected, the voltage at the two ends of the normal indication light emitting diode LED 1 can be completely determined, and if the resistor R 4 in the first connector 100 and the resistor R 0 after the parallel connection of the resistor R5 and the resistor R6 are in a proportional relation, the normal indication light emitting diode LED 1 is lightened; however, if the resistor R 4 in the first connector 100 and the resistor R 0 in the second connector are not in a proportional relationship, the normal indication LED 1 is not lit;
The present application is based on the above-mentioned proportional relationship, and ensures that each first connector 100 and the second connector 200 connected to the first connector 100 in a one-to-one correspondence have uniqueness.
Specifically, referring to fig. 2, in one embodiment, the first connector 100 includes resistors R 1 to R 4, a relay KM, a triode VT and an LED 2, wherein one end of the resistor R 1 is connected to one end of the coil of the relay KM and one end of the resistor R 4 at the same time, and a common terminal connected to the three is LED out and then is connected to one end line L 2 of the terminal; the other end of the relay KM coil is connected with the collector electrode of the triode VT; the other end of the resistor R 1 is connected with the base electrode of the triode VT and one end of the resistor R 2 at the same time; the emitter of the triode VT is connected with one end of a resistor R 3, and the other end of the resistor R 3 is connected with the anode of an electric indication light-emitting diode (LED 2); the cathode of the electric indication light emitting diode LED 2 is connected with the other end of the resistor R 2 and grounded; the other end of the resistor R 4 is connected with a test line SI;
The second connector 200 includes resistors R 5 to R 6 and a normal indication light emitting diode LED 1; the anode of the normal indication light emitting diode LED 1 is connected with one end of the resistor R 5 and then is connected with the other end line L 1 of the terminal; the cathode of the normal indication light emitting diode LED 1 is connected with one end of the resistor R 6; the other end of the resistor R 5 is connected with the other end of the resistor R 6 and then is connected with one end of a normally open auxiliary contact KM 1 of the relay KM, and the other end of the normally open auxiliary contact KM 1 of the relay KM is grounded.
However, the above embodiment is only applicable to the case where the secondary circuit terminal strip lines are all charged, the application range is relatively small, and the lines are determined to be charged and remain charged before use. In practice, however, the electrification condition of the lines at both ends of the terminal block is largely uncertain, and even if electrification or non-electrification is determined, the electrification condition may be changed during disconnection.
Thus, in another embodiment, referring to fig. 1, a normally closed auxiliary contact KT 1 of a time relay KT is further connected in series between the resistor R 1 and the resistor R 4; the common end of the resistor R 1, the relay KM coil and the normally closed auxiliary contact KT 1 of the time relay KT is connected with one end of the other normally closed auxiliary contact KT 2 of the time relay KT; the resistor R 4 is connected with the normally closed auxiliary contact KT 1 of the time relay KT and is connected with the positive electrode of the direct-current power supply E and one end of the coil of the time relay KT; the negative electrode of the direct current power supply E is grounded; the other end of the time relay KT coil is connected with one end of a normally closed auxiliary contact KM 2 of the relay KM; the other end of the normally-closed auxiliary contact KM 2 of the relay KM is connected with the other end of the other normally-closed auxiliary contact KT 2 of the time relay KT and then is connected with one end line L 2 of the terminal.
In this embodiment, it is applicable whether or not the secondary circuit terminal strip line is electrified. If in practice there is a possibility that both ends are charged, the circuit of the electrical indication light emitting diode LED 2 is installed in the second connector 200 at the same time, and after the disclosure of the present application, a person skilled in the art can completely install the circuit design of the electrical indication light emitting diode LED 2 in the second connector 200, which is a common technical means for a person skilled in the art and will not be described again.
In terms of devices, in some embodiments, referring to fig. 3, 4,5 and 6, the main connector 400 includes a first sliding rail 1 and a second sliding rail 2 that are disposed in parallel, and a first connecting block 5 and a second connecting block 6 are fixedly disposed at two ends of the first sliding rail 1 respectively; the two ends of the first connecting block 5 and the second connecting block 6 are respectively connected with a compression screw 7 in a threaded manner, and the main connector 400 is fixed on the terminal block by screwing the compression screws 7; a screw rod 9 is arranged between the first slide rail 1 and the second slide rail 2, one end of the screw rod 9 is rotationally connected with the first slide rail 1, the other end of the screw rod 9 penetrates through the second slide rail 2 and then is fixedly connected with a screwing block, and the screw rod 9 is in threaded connection with the second slide rail 2; a plurality of first sliding blocks 4 are arranged on the first sliding rail 1 in a sliding manner, second sliding blocks 3 which are arranged on the second sliding rail 2 in a sliding manner are arranged between every two first sliding blocks 4, the second sliding blocks 3 are of an inverted triangle structure, and the distance between every two adjacent first sliding blocks 4 is controlled by controlling the depth of inserting the second sliding blocks 3 between every two adjacent first sliding blocks 4; a notch 11 is formed in the middle of the first sliding rail 1, a first connecting wire 10 is arranged on the first sliding block 4, and the first connecting wire 10 is connected with one end, different from the end connected with the base electrode of the triode VT, of the resistor R 1; the first connection line 10 is connected to a first connection end 12, and the first connection end 12 is used for connecting with a line for connecting with one end of a terminal. A plurality of slide rail slide bars 8 are arranged between the first slide rail 1 and the second slide rail 2, one end of each slide rail slide bar 8 is fixedly connected with the first slide rail 1, and the other end of each slide rail slide bar 8 penetrates through the second slide rail 2 and is in sliding connection with the second slide rail 2.
In some embodiments, the first springs 14 are disposed above the first connecting blocks 5 and the second connecting blocks 6 at two ends of the second sliding rail 2, a plurality of first sliding rods 15 are disposed around the first springs 14, one ends of the first sliding rods 15 are fixedly connected with the second sliding rail 2, and the other ends of the first sliding rods 15 are respectively connected with the first connecting blocks 5 and the second connecting blocks 6 in a sliding manner.
Referring to fig. 9 and 5, a first sliding cavity 23 is provided in the middle of the first sliding rail 1, a top block 22 is slidably provided in the first sliding cavity 23 at one side adjacent to the second connecting block 6, a third spring 21 is provided between the top block 22 and the second connecting block 6, and the top block 22 is used for applying pressure to the first sliding block 4 in the lateral direction under the action of the elastic force of the third spring 21; a second sliding cavity 24 is arranged in the middle of the second sliding rail 2, and a second sliding body 25 matched with the second sliding cavity 24 is arranged at the bottom of the second sliding block 3.
Referring to fig. 10 and 11, the second connector 200 includes a second connection end 29 for connection with a line detached from the other end of the terminal, the second connection end 29 is fixedly connected with one end of a connection post 32, and the other end of the connection post 32 is fixedly connected with a pressure-bearing rod 27; the pressure-bearing rod 27 is slidably arranged in the holding rod 26, one end of the holding rod 26 is fixedly connected with a rod bottom 33 provided with a through hole in the middle, and the connecting column 32 passes through the through hole and is slidably connected with the rod bottom 33; a containing cavity 30 is formed between the rod bottom 33 and the pressure-bearing rod 27 and outside the connecting column 32, a fourth spring 31 is sleeved outside the connecting column 32, and the fourth spring 31 is positioned in the containing cavity 30; the pressure-bearing rod 27 is connected with one end of a second connecting wire 28, and the other end of the second connecting wire 28 is connected with the other end of a normally open auxiliary contact KM 1 of the relay KM of the second connector 200.
Referring to fig. 3, 7 and 8, the first slider 4 has a structure with a wide top and a narrow bottom, and two ends of the top of the first slider 4 are rotatably provided with pulleys 41; a wire passing hole is formed in the middle of the first sliding block 4, a metal rod 19 is arranged in the wire passing hole in a penetrating mode, one end of the metal rod 19 is fixedly connected with the first connecting wire 10, and the other end of the metal rod is fixedly connected with the first connecting end 12; a lantern ring 44 is fixedly sleeved outside one side of the metal rod 19 close to the first connecting end 12, and the lantern ring 44 is in sliding connection with the wire passing hole; a wire passing cavity is formed between the metal rod 19 and the wire passing hole, a second spring 18 is arranged in the wire passing cavity, one end of the second spring 18 is fixedly connected with the lantern ring 44, and the other end of the second spring 18 is fixedly connected with the fixed plate 16; the metal rod 19 passes through the fixed plate 16 and is in sliding connection with the fixed plate 16; the fixing plate 16 is fixedly connected with the first sliding block 4 through a fixing rod 17. The first sliding block 4 is in sliding connection with the first sliding rail 1 through a first sliding body; the first sliding body includes a connecting portion 43 fixedly connected with the first sliding block 4, and the connecting portion 43 is fixedly connected with the sliding portion 42. The wire passing cavity passes through the connecting part 43 and the sliding part 42; the wire passing cavity is located right above the notch 11.
The using method comprises the following steps:
when the wire is disconnected:
Referring to fig. 3 and 6, first, the first connection ends 12 are aligned to one side of the secondary circuit terminal row, which is not required to be disconnected, the compression screw 7 is screwed down, and if the intervals between the first connection ends 12 are not consistent, the screw-down blocks are manually turned to adjust the distance between every two first connection ends 12;
Next, sequentially removing the lines below the secondary circuit terminal block, note that removing one line finds out the second connector 200 on the terminal where the line is located that matches the first connector 100 where the first connection end 12 that has been already fixed is located, and connects the line with the second connector 200; referring to fig. 10 and 11, after holding the grip lever 26, pressing the pressure-receiving lever 27 and the second connection end 29 being protruded, the wire is placed in the hook of the second connection end 29, and then the pressure-receiving lever 27 is released, thereby achieving the fixation of the second connector 200 and the wire;
When in wiring:
Before wiring, the second connector 200 is fixed to each wire, the test wires SI of the first connector 100 matched with the second connector 200 are respectively contacted with the wires connected with the second connector 200, and if the normal indication light emitting diode LED 1 is lighted, the wiring is proved to be correct, and the wiring can be performed; otherwise, the wiring is wrong, and the checking needs to be repeated. In some embodiments, the top of the test line SI is designed as a probe-like shape.
Referring to fig. 4, in some embodiments, upper and lower openings 13 and 20 are opened on the first and second connection blocks 5 and 6, and the lower opening 20 is used to store and place the connection flat cable 300, the test wire SI, and the like shown in fig. 12. The upper opening 13 provides a movable space for the first slide bar 15.
It should be noted that if the power indicating light emitting diode LED 2 is turned on, it indicates that the secondary circuit is powered on, only needs to pay attention to safety, and the basis for judging the wiring at this time is still to see whether the normal indicating light emitting diode LED 1 is turned on or not, if so, the wiring is correct, and the wiring can be proved to be correct; otherwise, the wiring is wrong, and the checking needs to be repeated.
According to the secondary circuit disconnection and connection calibrator for the power system relay protection, the circuits at two ends of the secondary circuit terminal strip are subjected to one-to-one marking calibration through the uniqueness between each first connector and the second connector which is connected with the first connectors in one-to-one correspondence, measurement and analysis on secondary circuit resistance, voltage and the like are not needed, and the influence on electronic devices on the secondary circuit is avoided. In addition, in the prior art, the voltage of the secondary circuit will affect the detection process, in the application, the characteristic that the secondary circuit is mostly direct current voltage if the secondary circuit is electrified is fully utilized, if the secondary circuit is electrified, the first connector firstly uses the resistor R 1 to limit the current, then uses the triode VT to amplify and detect, and uses the voltage to light the normal indication light emitting diode LED 1 and the electrified indication light emitting diode LED 2, so that an additional power supply is not needed, and the energy conservation and the safety are realized.
The above is only a preferred embodiment of the present application, and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
While the foregoing description of the embodiments of the present application has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the application, but rather, it is intended to cover all modifications or variations within the scope of the application as defined by the claims of the present application.
Claims (4)
1. The utility model provides a power system relay protection secondary circuit tear open and connect butt joint verifier which characterized in that:
Comprises a main connector (400) and a slave connector (500) which are used for being respectively and electrically connected with the circuits at two ends of the secondary loop terminal strip; the main connector (400) comprises a plurality of first connectors (100), and the auxiliary connector (500) comprises second connectors (200) which are connected with the first connectors (100) in a one-to-one correspondence manner; each first connector (100) of the main connector (400) is connected with a test wire SI;
each first connector (100) and a second connector (200) connected thereto are used for line connection with both ends of one terminal of the secondary circuit terminal row;
The first connector (100) comprises resistors R 1 to R 4, a relay KM, a triode VT and an electric indication light emitting diode LED 2, wherein one end of the resistor R 1 is simultaneously connected with one end of a coil of the relay KM and one end of the resistor R 4, and a common end connected with the resistor R 1 and the resistor R 4 is connected with one end line L 2 of a terminal after being LED out; the other end of the relay KM coil is connected with the collector electrode of the triode VT; the other end of the resistor R 1 is connected with the base electrode of the triode VT and one end of the resistor R 2 at the same time; the emitter of the triode VT is connected with one end of a resistor R 3, and the other end of the resistor R 3 is connected with the anode of an electric indication light-emitting diode (LED 2); the cathode of the electric indication light emitting diode LED 2 is connected with the other end of the resistor R 2 and grounded; the other end of the resistor R 4 is connected with a test line SI;
The second connector (200) includes resistors R 5 to R 6 and a normal indication light emitting diode LED 1; the anode of the normal indication light emitting diode LED 1 is connected with one end of the resistor R 5 and then is connected with the other end line L 1 of the terminal; the cathode of the normal indication light emitting diode LED 1 is connected with one end of the resistor R 6; the other end of the resistor R 5 is connected with the other end of the resistor R 6 and then is connected with one end of a normally open auxiliary contact KM 1 of the relay KM, and the other end of the normally open auxiliary contact KM 1 of the relay KM is grounded;
The main connector (400) comprises a first sliding rail (1) and a second sliding rail (2) which are arranged in parallel, and a first connecting block (5) and a second connecting block (6) are respectively and fixedly arranged at two ends of the first sliding rail (1); the two ends of the first connecting block (5) and the second connecting block (6) are respectively connected with a compression screw (7) in a threaded manner, and the main connector (400) is fixed on the terminal block by screwing the compression screws (7);
A screw rod (9) is arranged between the first sliding rail (1) and the second sliding rail (2), one end of the screw rod (9) is rotationally connected with the first sliding rail (1), the other end of the screw rod (9) penetrates through the second sliding rail (2) and then is fixedly connected with the screwing block, and the screw rod (9) is in threaded connection with the second sliding rail (2);
A plurality of first sliding blocks (4) are arranged on the first sliding rail (1) in a sliding manner, second sliding blocks (3) which are arranged on the second sliding rail (2) in a sliding manner are arranged between every two first sliding blocks (4), the second sliding blocks (3) are of inverted triangle structures, and the distance between every two adjacent first sliding blocks (4) is controlled by controlling the depth of the second sliding blocks (3) inserted between every two adjacent first sliding blocks (4);
A notch (11) is formed in the middle of the first sliding rail (1), a first connecting wire (10) is arranged on the first sliding block (4), and the first connecting wire (10) is connected with one end, different from the end connected with the base electrode of the triode VT, of the resistor R 1; the first connecting wire (10) is connected with the first connecting end (12), and the first connecting end (12) is used for being connected with one end line L 2 of the terminal;
A first sliding cavity (23) is formed in the middle of the first sliding rail (1), a top block (22) is arranged in one side, close to the second connecting block (6), of the first sliding cavity (23) in a sliding manner, a third spring (21) is arranged between the top block (22) and the second connecting block (6), and the top block (22) is used for giving pressure to the first sliding block (4) in the lateral direction under the action of the elastic force of the third spring (21);
a second sliding cavity (24) is formed in the middle of the second sliding rail (2), and a second sliding body (25) matched with the second sliding cavity (24) is arranged at the bottom of the second sliding block (3);
The second connector (200) comprises a second connecting end (29) for connecting with a line detached from the other end of the terminal, the second connecting end (29) is fixedly connected with one end of a connecting column (32), and the other end of the connecting column (32) is fixedly connected with a pressure-bearing rod (27); the pressure-bearing rod (27) is arranged in the holding rod (26) in a sliding manner, one end of the holding rod (26) is fixedly connected with a rod bottom (33) with a through hole in the middle, and the connecting column (32) penetrates through the through hole to be in sliding connection with the rod bottom (33);
A containing cavity (30) is formed between the rod bottom (33) and the pressure-bearing rod (27) and outside the connecting column (32), a fourth spring (31) is sleeved outside the connecting column (32), and the fourth spring (31) is located in the containing cavity (30);
The pressure-bearing rod (27) is connected with one end of a second connecting wire (28), and the other end of the second connecting wire (28) is connected with the other end of a normally open auxiliary contact KM 1 of a relay KM of the second connector (200);
a plurality of slide rail slide bars (8) are arranged between the first slide rail (1) and the second slide rail (2), one end of each slide rail slide bar (8) is fixedly connected with the first slide rail (1), and the other end of each slide rail slide bar (8) penetrates through the second slide rail (2) and is in sliding connection with the second slide rail (2);
The two ends of the second sliding rail (2) are positioned above the first connecting block (5) and the second connecting block (6), a plurality of first sliding rods (15) are arranged around the first springs (14), one end of each first sliding rod (15) is fixedly connected with the second sliding rail (2), and the other end of each first sliding rod (15) is respectively connected with the first connecting block (5) and the second connecting block (6) in a sliding manner;
The first sliding block (4) is of a structure with a wide upper part and a narrow lower part, and pulleys (41) are rotatably arranged at two ends of the top of the first sliding block (4); a wire passing hole is formed in the middle of the first sliding block (4), a metal rod (19) is arranged in the wire passing hole in a penetrating mode, one end of the metal rod (19) is fixedly connected with the first connecting wire (10), and the other end of the metal rod is fixedly connected with the first connecting end (12); one side of the metal rod (19) close to the first connecting end (12) is fixedly sleeved with a collar (44), and the collar (44) is in sliding connection with the wire passing hole;
a wire passing cavity is formed between the metal rod (19) and the wire passing hole, a second spring (18) is arranged in the wire passing cavity, one end of the second spring (18) is fixedly connected with the lantern ring (44), and the other end of the second spring (18) is fixedly connected with the fixed plate (16);
The metal rod (19) passes through the fixed plate (16) and is in sliding connection with the fixed plate (16);
The fixing plate (16) is fixedly connected with the first sliding block (4) through a fixing rod (17).
2. The power system relay protection secondary circuit disconnection and connection checker according to claim 1, wherein:
A normally closed auxiliary contact KT 1 of a time relay KT is also connected in series between the resistor R 1 and the resistor R 4;
The common end of the resistor R 1, the relay KM coil and the normally closed auxiliary contact KT 1 of the time relay KT is connected with one end of the other normally closed auxiliary contact KT 2 of the time relay KT;
the resistor R 4 is connected with the normally closed auxiliary contact KT 1 of the time relay KT and is connected with the positive electrode of the direct-current power supply E and one end of the coil of the time relay KT;
the negative electrode of the direct current power supply E is grounded;
the other end of the time relay KT coil is connected with one end of a normally closed auxiliary contact KM 2 of the relay KM;
The other end of the normally-closed auxiliary contact KM 2 of the relay KM is connected with the other end of the other normally-closed auxiliary contact KT 2 of the time relay KT and then is connected with one end line L 2 of the terminal.
3. The power system relay protection secondary circuit disconnection and connection checker according to claim 1, wherein:
The first sliding block (4) is in sliding connection with the first sliding rail (1) through a first sliding body;
The first sliding body comprises a connecting part (43) fixedly connected with the first sliding block (4), and the connecting part (43) is fixedly connected with the sliding part (42).
4. The power system relay protection secondary circuit disconnection and connection checker according to claim 3, wherein:
the wire passing cavity passes through the connecting part (43) and the sliding part (42);
the wire passing cavity is positioned right above the notch (11).
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| CN202411059610.9A CN118566788B (en) | 2024-08-05 | 2024-08-05 | Electric power system relay protection secondary circuit disconnection and connection calibrator |
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| CN202411059610.9A CN118566788B (en) | 2024-08-05 | 2024-08-05 | Electric power system relay protection secondary circuit disconnection and connection calibrator |
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| CN118566788B true CN118566788B (en) | 2024-10-18 |
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| KR20130121461A (en) * | 2012-04-27 | 2013-11-06 | 신건태 | Apparatus for detecting impair of rails and method using the same |
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| GB892468A (en) * | 1959-08-22 | 1962-03-28 | Charles Henry Nicholson | Improvements in electrical testing devices |
| GB1504181A (en) * | 1975-01-09 | 1978-03-15 | Lansing Bagnall Ltd | Detection of earth faults |
| JPH1152001A (en) * | 1997-07-31 | 1999-02-26 | Sumitomo Wiring Syst Ltd | Inspection part of connector-inspection apparatus |
| US6307386B1 (en) * | 1998-05-29 | 2001-10-23 | Agilent Technologies, Inc. | Modular mechanical fixturing and automated handling of printed circuit assemblies on automated test equipment |
| SE519945C2 (en) * | 2000-12-14 | 2003-04-29 | Abb Ab | Fault localization method and device for power transmission lines |
| DE102007057394A1 (en) * | 2006-11-27 | 2008-05-29 | Suss Microtec Test Systems Gmbh | Vector network analyzer calibrating method, involves implementing reflection standards resembling short-circuit and open-circuit operation in which ports are physically equal, and realizing transmission values of port by through connection |
| CN203490260U (en) * | 2013-09-25 | 2014-03-19 | 国家电网公司 | Relay protection secondary circuit auxiliary verifying device |
| CN107196275A (en) * | 2017-06-19 | 2017-09-22 | 中国南方电网有限责任公司 | A kind of method for examining bus differential protection secondary circuit with electric transmission in short-term |
| CN207457405U (en) * | 2017-12-05 | 2018-06-05 | 广东电网有限责任公司清远供电局 | A kind of pressure-free type secondary circuit contact dedicated tester |
| CN209327405U (en) * | 2018-12-29 | 2019-08-30 | 云南电网有限责任公司电力科学研究院 | A relay protection secondary circuit maintenance terminal |
| US11163532B2 (en) * | 2019-01-18 | 2021-11-02 | Fujitsu Limited | Solving multivariate quadratic problems using digital or quantum annealing |
| CN217766536U (en) * | 2022-06-27 | 2022-11-08 | 国网江苏省电力有限公司宿迁供电分公司 | Based on relay protection secondary circuit overhauls terminal for electric power |
| KR102619629B1 (en) * | 2023-07-18 | 2023-12-29 | 유진기공산업주식회사 | Electrical Connector Verification Tester for Railway Vehicles |
| CN117805685A (en) * | 2023-12-27 | 2024-04-02 | 国网山东省电力公司临清市供电公司 | Relay protection secondary circuit disconnection and connection calibrator for power system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20130121461A (en) * | 2012-04-27 | 2013-11-06 | 신건태 | Apparatus for detecting impair of rails and method using the same |
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