CN112649662A - Distribution network line fault metering device based on voltage characteristics - Google Patents
Distribution network line fault metering device based on voltage characteristics Download PDFInfo
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- CN112649662A CN112649662A CN202011388638.9A CN202011388638A CN112649662A CN 112649662 A CN112649662 A CN 112649662A CN 202011388638 A CN202011388638 A CN 202011388638A CN 112649662 A CN112649662 A CN 112649662A
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- metering device
- distribution network
- network line
- line fault
- metering
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
- G01R11/04—Housings; Supporting racks; Arrangements of terminals
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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
- G01R31/67—Testing the correctness of wire connections in electric apparatus or circuits
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
Abstract
The invention provides a distribution network line fault metering device based on voltage characteristics, which is characterized in that two groups of metering voltage loops and current loops are respectively connected into an electric energy meter and a negative control terminal, so that the independence of the metering loops of the electric energy meter and the negative control terminal is met, the data of the electric energy meter and the negative control terminal in operation are monitored and compared in real time in a remote manner, and the abnormal operation of the metering device is found in time and is processed in time. Meanwhile, the installation of the metering module can be completed quickly through the installation assembly with the embedded structure. The stability of the connection of the metering module and the mounting assembly is ensured.
Description
Technical Field
The invention relates to the technical field of power transmission network maintenance equipment, in particular to a distribution network line fault metering device based on voltage characteristics.
Background
The conventional metering device in a metering mode has more connecting devices and more complex connecting points, a wiring terminal is easy to generate virtual connection and wrong wiring, and a professional teacher can not judge whether the wiring of the metering device is correct or not or change the correct wiring to be wrong through devices such as a phase sequence meter, a phase volt-ampere meter and the like to cause metering errors due to the fact that the user load property is uncertain, the load is light, the electric energy quality is unqualified and the like during field inspection, so that the defects of user electric quantity and electric charge compensation, metering dispute and the like are caused.
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.
In order to solve the technical problems, the invention provides the following technical scheme: a distribution network line fault metering device based on voltage characteristics comprises:
the metering module comprises current transformers, voltage transformers, electric energy meters and a load control terminal, wherein the current transformers are provided with two independent groups, and the electric energy meters and the load control terminal are respectively connected with one current transformer through one group of secondary circuits;
the wiring component is arranged among the electric energy meter, the negative control terminal and the secondary loop, and the electric energy meter, the negative control terminal and the secondary loop are all connected into the wiring component;
the box body component comprises a metering box and an installation component, the metering module and the wiring component are metered inwards and are detachably arranged in the metering box through the installation component, and the installation component comprises an embedding structure and an operation structure; the operation structure controls an installation state of the fitting structure.
As an optimal scheme of the distribution network line fault metering device based on the voltage characteristics, the invention comprises the following steps: the transformation ratios of the two groups of current transformers are the same and are independent of each other.
As an optimal scheme of the distribution network line fault metering device based on the voltage characteristics, the invention comprises the following steps: the electric energy meter and the negative control terminal are connected in parallel to a group of voltage transformers.
As an optimal scheme of the distribution network line fault metering device based on the voltage characteristics, the invention comprises the following steps: the chimeric structure comprises a chimeric gene and a chimeric gene,
the connecting sleeve is arranged in the metering box and is provided with an inlet and an inserting cavity facing outwards; a limit plate is arranged on the upper part of the support,
the connector is located the metering module orientation on one side of batch meter, the metering module installation advances during the batch meter, the connector gets into in the grafting intracavity, the limiting plate with the locking piece contact to by locking piece limit position.
As an optimal scheme of the distribution network line fault metering device based on the voltage characteristics, the invention comprises the following steps: the limiting plate is a boss which is formed on the side wall of the connector in a protruding mode, and a first limiting surface is arranged on the limiting plate;
the locking piece comprises a buckle piece movably arranged along the direction vertical to the inlet and outlet direction of the connector, and a second limiting surface is arranged on the buckle piece;
when the connector enters the accommodating cavity, the second limiting surface is in contact with the first limiting surface, and the second limiting surface is located on the outer side of the first limiting surface.
As an optimal scheme of the distribution network line fault metering device based on the voltage characteristics, the invention comprises the following steps: the limiting plate is also provided with a guide part which is a convex block which is formed on the limiting plate and is provided with a first inclined guide surface; the buckle piece is provided with a second guide surface parallel to the first guide surface; when the connector moved out the holding chamber direction and moved, the first guide face and the second guide face contacted, the drive buckle spare was to keeping away from the limiting plate direction removes.
As an optimal scheme of the distribution network line fault metering device based on the voltage characteristics, the invention comprises the following steps: the buckle spare is located in the mounting groove on the adapter sleeve inner wall, the symmetry both sides of limiting plate are located to the guide portion symmetry, first guide face and second guide face are domatic.
As an optimal scheme of the distribution network line fault metering device based on the voltage characteristics, the invention comprises the following steps: the unlocking piece is parallel to the unlocking rod arranged in the axial direction of the connecting sleeve, one end of the unlocking piece is connected with the buckling piece through a traction belt, the other end of the unlocking piece protrudes out of the position base seat, the buckling piece is further provided with a reset spring between the mounting grooves, and the unlocking rod drives the buckling piece to retract in the mounting groove when the connecting sleeve reversely moves.
As an optimal scheme of the distribution network line fault metering device based on the voltage characteristics, the invention comprises the following steps: the tip of connector is equipped with butt joint portion, prevent mistake handle through linkage structure with butt joint portion joint, when preventing mistake handle rotation, drive the connector is rotatory.
As an optimal scheme of the distribution network line fault metering device based on the voltage characteristics, the invention comprises the following steps: the linkage structure comprises a plurality of linkage mechanisms,
the butt joint sleeve is rotatably arranged at the end part of the connecting sleeve, and is provided with a butt joint groove matched with the butt joint part;
the rotary cranks are respectively connected to the butting sleeve and the anti-misoperation handle, and the two rotary cranks are the same in length;
and the driving connecting rod is connected with the two rotating cranks, and two ends of the driving connecting rod are hinged with the rotating cranks.
The invention has the beneficial effects that: according to the distribution network line fault metering device based on the voltage characteristics, the two groups of metering voltage loops and current loops are respectively connected to the electric energy meter and the negative control terminal, the independence of the metering loops of the electric energy meter and the negative control terminal is met, real-time remote data monitoring and comparison are carried out on the data of the electric energy meter and the negative control terminal in operation, and abnormal operation of the metering device is found in time and is processed in time. Meanwhile, the installation of the metering module can be completed quickly through the installation assembly with the embedded structure. The stability of the connection of the metering module and the mounting assembly is ensured.
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 exercise. Wherein:
FIG. 1 is a circuit diagram of a distribution network line fault metering device based on voltage characteristics;
FIG. 2 is a circuit diagram of another state of the distribution network line fault metering device based on voltage characteristics;
FIG. 3 is a schematic view of a case component;
FIG. 4 is a schematic view of a fitting structure;
FIG. 5 is a cross-sectional view of the fitting structure;
fig. 6 is a schematic structural diagram of an operating assembly.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures 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.
Example 1
The present embodiment provides a distribution network line fault metering device based on voltage characteristics, the structure of which is shown in fig. 1 to 5, and the distribution network line fault metering device includes a metering module, a wiring component 160 and a box module.
The metering module comprises a current transformer 130, a voltage transformer 140, an electric energy meter 110 and a negative control terminal 120, wherein the current transformers 130 are provided with two independent groups, and the electric energy meter 110 and the negative control terminal 120 are respectively connected to one current transformer 130 through one group of secondary circuits 150;
the wiring component 160 is arranged among the electric energy meter 110, the load control terminal 120 and the secondary circuit 150, and the electric energy meter 110, the load control terminal 120 and the secondary circuit 150 are all connected into the wiring component 160;
the box body part comprises a metering box and a mounting assembly, the metering module and the wiring component 160 are metered inwards and are detachably arranged in the metering box through the mounting assembly, and the mounting assembly comprises an embedding structure 230 and an operating structure; the operation structure controls the installation state of the fitting structure 230. The control structure may be such that the engagement structure 230 can only be disengaged at a particular location to prevent the metering module from being removed at will.
As shown in fig. 2, the two sets of current transformers 130 in the present embodiment have the same transformation ratio and are independent from each other, and the electric energy meter 110 and the negative control terminal 120 are connected in parallel to a set of voltage transformers 140. Fig. 2 is a circuit diagram of three-phase three-element components, and fig. 3 is a circuit diagram of three-phase two-element components.
Because the load terminal and the electric energy meter 110 in the prior art are connected in a wiring way by the same group of measuring voltage and measuring current loops, the measuring data of the load terminal and the measuring current loops are consistent and wrong under the condition of wrong wiring of the measuring device, the terminal cannot analyze the data acquired on site, and the defect of abnormal reporting cannot be found; in this embodiment, the electric energy meter 110 and the negative control terminal 120 are respectively connected to and used with independent metering current loops and voltage loops, so that when the metering device is in a wiring error, the data collected by the terminal and the electric energy meter 110 are different, the metering system monitors the data which can be collected on site in real time, an abnormal active alarm is found, and the staff of the power supply department can compare the data collected by the metering automation system with the data collected by the electric energy meter 110 to find the abnormal active alarm, so that the abnormal active alarm is timely processed on site.
Particularly, the electric energy meter 110 and the load control terminal 120 are respectively connected to use an independent metering current loop and an independent metering voltage loop, when the metering automation system finds that the data of the terminal is inconsistent with that of the electric energy meter 110, the field check on the wiring of the metering device is correct, one of the electric energy meter 110, the terminal and the mutual inductor can be judged to have an error, and the error of the equipment can be tested in a targeted manner and can be processed in time. If the wiring error of the electric energy meter 110 can refer to the data measured by the terminal to perform electric quantity and electric charge compensation, the accuracy of the compensation of the electric quantity and the electric charge can be effectively ensured
As shown in fig. 4, the engaging structure 230 in this embodiment includes a connecting sleeve 231 and a connecting head 232, wherein the connecting sleeve 231 is opened in the epitope mounting groove 231a and has an inlet and a plugging cavity facing outward, and two connecting sleeves 231 are disposed in each epitope mounting groove 231 a. The connector 232 is disposed on one side of the single-phase electric meter facing the epitope mounting groove 231a, and when the single-phase electric meter is mounted in the epitope mounting groove 231a, the connector 232 enters the insertion cavity and is locked by the locking member 233.
Specifically, as shown in fig. 4, a limiting plate 232a is disposed on the connecting head 232 in this embodiment, after the connecting head 232 enters the connecting sleeve 231, the limiting plate 232a contacts the locking member 233 and is limited by the locking member 233, so as to limit the limiting plate 232a in the accommodating cavity 231b, and temporarily separate the connecting head 232 from the connecting sleeve 231.
Preferably, the position-limiting plate 232a is a boss formed protruding on the sidewall of the connecting head 232, and has a first position-limiting surface 232a-1 thereon; the locking member 233 comprises a latch member 233a movably disposed along a direction perpendicular to the inlet and outlet direction of the connector 232, and the latch member 233a has a second limiting surface 233 a-1; when the connecting head 232 enters the accommodating cavity 231b, the second limiting surface 233a-1 contacts with the first limiting surface 232a-1, and the second limiting surface 233a-1 is located outside the first limiting surface 232 a-1.
The limiting plate 232a is a boss protruding from the sidewall of the connector 232, and has a first limiting surface 232a-1 thereon, the boss is annular and is uniformly perpendicular to the axial plane of the connecting shaft, and the first limiting surface 232a-1 is a surface of the boss facing the outer side of the accommodating cavity 231 b. The locking member 233a is movably disposed in an installation groove 231a inside the connection sleeve 231 along a direction perpendicular to the moving direction of the connection head 232, the locking member 233a has a second limiting surface 233a-1, the installation groove 231a is a slot opened on the inner sidewall of the connection sleeve 231, and the extending direction of the slot allows the locking member 233a to move along a direction perpendicular to the moving direction of the connection head 232. As shown in fig. 4 and 5, after the connecting head 232 enters the receiving cavity 231b, as the connecting head 232 moves further into the receiving cavity 231b, when the first limiting surface 232a-1 on the limiting plate 232a moves to be closer to the inside of the receiving cavity 231b than the second limiting surface 233a-1, the buckling member 233a moves towards the connecting head 232 to contact the second limiting surface 233a-1 with the first limiting surface 232a-1, so as to block the outward movement of the limiting plate 232a, and the connecting head 232 can be temporarily retained in the receiving cavity 231 b.
In order to keep the latch 233a in a state of protruding out of the mounting groove 231a, a return spring 323 is further provided between the latch 233a and the mounting groove 231a, and the return spring 323 applies a pushing force to the latch 233a to move to the outside of the mounting groove 231 a. Simultaneously still be equipped with the unblock button on adapter sleeve 231, the activity of unblock button inlays and locates on adapter sleeve 231 outer wall, its direction of motion is the same with buckle spare 233a, be connected through traction band 322 between unblock button and buckle spare 233a, the activity groove and the mounting groove 231a intercommunication of unblock button, the middle part of traction band 322 and the spacer butt between activity groove and the mounting groove 231a, when unblock button is pressed to, traction band 322 will drive buckle spare 233a to the inside removal of mounting groove 231a, thereby with buckle spare 233a withdrawal mounting groove 231a, reserve the position for limiting plate 232a gets into holding chamber 231 b.
A guide portion 232b, which is a protrusion having an inclined first guide surface 232b-1 formed on the position limiting plate 232a, is further provided on the position limiting plate 232 a; the first guide surface 232b-1 faces the outlet side of the accommodating chamber 231b, and the latch 233a has a second guide surface 233a-2 parallel to the first guide surface 232 b-1; the second guiding surface 233a-2 faces the inside of the accommodating chamber 231b, and as shown in fig. 4, when the connecting head 232 moves out of the accommodating chamber 231b, the first guiding surface 232b-1 and the second guiding surface 233a-2 contact each other, and when the connecting head 232 continues to move outward, the first guiding surface 232b-1 drives the latch 233a to move away from the limiting plate 232a, so that the latch 233a retracts into the mounting groove 231a, and the connecting head 232 can move out of the accommodating chamber 231 b.
In order to make the limiting plate 232a move out of the accommodating cavity 231b only at a specific position, as shown in fig. 5, the snapping member 233a in this embodiment is disposed in the mounting groove 231a on the inner wall of the connecting sleeve 231, the guiding parts 232b are symmetrically disposed on two symmetrical sides of the limiting plate 232a, and the first guiding surface 232b-1 and the second guiding surface 233a-2 are both sloped. When the connecting head 232 rotates to a specific position, the guiding portion 232b faces the latch 233a, the first guiding surface 232b-1 and the second guiding surface 233a-2 can be opposite to each other, and at this time, the connecting head 232 is pulled out to be interlocked with the latch 233a, so that the latch 233a is forced to move back.
As shown in fig. 5, the unlocking member 320 in this embodiment is an unlocking rod 321 disposed parallel to the axial direction of the connecting sleeve 231, one end of the unlocking rod 321 is connected to the fastener 233a through a pulling belt 322, and the other end protrudes out of the epitope base, so that when the unlocking rod 321 moves in the opposite direction toward the inside of the connecting sleeve 231, the fastener 233a is driven to retract into the mounting groove 231 a.
When the unlocking rod 321 is pressed inward, the traction belt 322 drives the fastener 233a to move inward toward the mounting groove 231a, so as to retract the fastener 233a into the mounting groove 231a, thereby leaving a position for the limiting plate 232a to enter the accommodating cavity 231b, and facilitating the connector 232 to enter the connecting sleeve 231.
In order to control the angular position of the connection head 232, a linkage structure 330 is provided between the anti-misoperation handle 310 and the connection head 232, and as shown in fig. 4 and 6, the end of the connection head 232 is provided with an abutting part 232 c. The linkage 330 includes a docking sleeve 333, a rotary crank 332, and a drive link 331. The butt joint sleeve 333 is rotatably arranged at the end part of the connecting sleeve 231, and is provided with a butt joint groove matched with the butt joint part 232 c; the rotary cranks 332 are respectively connected to the docking sleeve 333 and the anti-misoperation handle 310, and the two rotary cranks 332 have the same length. The driving link 331 connects the two rotating cranks 332, and both ends are hinged to the rotating cranks 332.
When the anti-misoperation handle 310 is rotated, the rotating crank 332 on one side is driven to rotate, and due to the connection relationship of the driving connecting rod 331, the rotating crank 332 on the other side is driven to rotate, so that the butt joint sleeve 333 is rotated, and because the connecting head 232 is provided with the square butt joint part 232c, after the connecting head 232 enters the connecting sleeve 231, the butt joint part 232c and the butt joint sleeve 333 are sleeved into a whole, and therefore the anti-misoperation handle can be driven by the linkage structure 330.
It is important to note that the construction and arrangement of the present application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperatures, pressures, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the present invention is not limited to a particular embodiment, but extends to various modifications that nevertheless fall within the scope of the appended claims.
Moreover, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those unrelated to the presently contemplated best mode of carrying out the invention, or those unrelated to enabling the invention).
It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, without undue experimentation.
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 has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on 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. The utility model provides a join in marriage net twine way trouble metering device based on voltage characteristic which characterized in that: comprises that
The metering module comprises current transformers (130), voltage transformers (140), an electric energy meter (110) and a load control terminal (120), wherein the current transformers (130) are provided with two independent groups, and the electric energy meter (110) and the load control terminal (120) are respectively connected to one current transformer (130) through one group of secondary circuits (150);
the wiring component (160) is arranged among the electric energy meter (110), the load control terminal (120) and the secondary circuit (150), and the electric energy meter (110), the load control terminal (120) and the secondary circuit (150) are all connected into the wiring component (160);
the box body component comprises a metering box and a mounting component, the metering module and the wiring component (160) are metered inwards and are detachably arranged in the metering box through the mounting component, and the mounting component comprises a tabling structure (230) and an operating structure; the operation structure controls the installation state of the fitting structure (230).
2. The voltage characteristic-based distribution network line fault metering device of claim 1, wherein: the transformation ratios of the two groups of current transformers (130) are the same and are independent of each other.
3. The voltage characteristic-based distribution network line fault metering device of claim 2, wherein: the electric energy meter (110) and the load control terminal (120) are connected in parallel to a group of voltage transformers (140).
4. The voltage characteristic-based distribution network line fault metering device according to any one of claims 1 to 3, wherein: the chimeric construct (230) comprises a chimeric construct,
the connecting sleeve (231) is arranged in the metering box and is provided with an inlet and an inserting cavity facing to the outside; a limit plate (232a) is arranged on the upper part,
connector (232), locate metering module orientation on one side of batch meter, metering module installs into during the batch meter, connector (232) get into in the grafting intracavity, limiting plate (232a) with locking piece (233) contact to by locking piece (233) restricted position.
5. The voltage characteristic-based distribution network line fault metering device of claim 4, wherein: the limiting plate (232a) is a boss which is formed on the side wall of the connecting head (232) in a protruding mode, and a first limiting surface (232a-1) is arranged on the limiting plate;
the locking piece (233) comprises a buckle piece (233a) movably arranged along the direction perpendicular to the inlet and outlet direction of the connecting head (232), and the buckle piece (233a) is provided with a second limiting surface (233 a-1);
when the connector (232) enters the accommodating cavity (231b), the second limiting surface (233a-1) is in contact with the first limiting surface (232a-1), and the second limiting surface (233a-1) is located on the outer side of the first limiting surface (232 a-1).
6. The voltage characteristic-based distribution network line fault metering device of claim 5, wherein: the limiting plate (232a) is also provided with a guiding part (232b), and the guiding part is a convex block which is formed on the limiting plate (232a) and is provided with a first inclined guiding surface (232 b-1); the buckle piece (233a) is provided with a second guide surface (233a-2) parallel to the first guide surface (232 b-1); when the connecting head (232) moves out of the accommodating cavity (231b) in the direction, the first guide surface (232b-1) is contacted with the second guide surface (233a-2), and the buckle piece (233a) is driven to move in the direction away from the limiting plate (232 a).
7. The voltage characteristic-based distribution network line fault metering device of claim 6, wherein: the buckle piece (233a) is arranged in a mounting groove (231a) in the inner wall of the connecting sleeve (231), the guide parts (232b) are symmetrically arranged on two symmetrical sides of the limiting plate (232a), and the first guide surface (232b-1) and the second guide surface (233a-2) are both slope surfaces.
8. The voltage characteristic-based distribution network line fault metering device of claim 7, wherein: unlocking piece (320) is for being on a parallel with unlocking pole (321) that adapter sleeve (231) axial direction set up, its one end with connect through traction band (322) between buckle spare (233a), the other end is outstanding epitope base, buckle spare (233a) with still be equipped with reset spring (323) between mounting groove (231a), unlocking pole (321) to during the inside reverse motion of adapter sleeve (231), drive buckle spare (233a) to shrink in mounting groove (231 a).
9. The voltage characteristic-based distribution network line fault metering device of claim 8, wherein: the tip of connector (232) is equipped with butt joint portion (232c), prevent mistake handle (310) through linkage structure (330) with butt joint portion (232c) joint, prevent mistake handle (310) when rotating, drive connector (232) are rotatory.
10. The voltage characteristic-based distribution network line fault metering device of claim 9, wherein: the linkage structure (330) comprises a gear mechanism,
the butt joint sleeve (333) is rotatably arranged at the end part of the connecting sleeve (231), and is provided with a butt joint groove matched with the butt joint part (232 c);
the rotating cranks (332) are respectively connected to the butt joint sleeve (333) and the anti-misoperation handle (310), and the lengths of the two rotating cranks (332) are the same;
and the driving connecting rod (331) is connected with the two rotating cranks (332), and two ends of the driving connecting rod are hinged with the rotating cranks (332).
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| CN202011388638.9A CN112649662B (en) | 2020-12-02 | 2020-12-02 | Distribution network line fault metering device based on voltage characteristics |
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| CN202011388638.9A CN112649662B (en) | 2020-12-02 | 2020-12-02 | Distribution network line fault metering device based on voltage characteristics |
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