CN217954588U - Join in marriage net secondary operation auxiliary device - Google Patents
Join in marriage net secondary operation auxiliary device Download PDFInfo
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- CN217954588U CN217954588U CN202221436041.1U CN202221436041U CN217954588U CN 217954588 U CN217954588 U CN 217954588U CN 202221436041 U CN202221436041 U CN 202221436041U CN 217954588 U CN217954588 U CN 217954588U
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Abstract
The utility model discloses a join in marriage net secondary operation auxiliary device comprises protection module, simulation circuit breaker, shell and bearing structure, simulation circuit breaker with through being used for the short circuit or breaking off between the protection module mechanism tripping and closing binding post with the integrative test switch of divide-shut brake input and switch position output terminal connects. The utility model discloses simple structure, join in marriage net secondary operation to present, especially the problem of the operation of not cutting off the power supply of protection, a join in marriage net secondary operation auxiliary device has been designed, the device joins in marriage net protection that does not cut off the power supply and improves the change operation in-process technically, correctly replace former protection on the one hand, make live working interval continue to take the protection operation, on the other hand is through using simulation circuit breaker, make the protection of new installation can test its whole group's action circuit, guarantee the accuracy of improving the change operation back secondary circuit technically, the bearing structure of magnetism is inhaled, external binding post of simplifying, be applicable to the quick of distribution network electric power technique and improve the operation and develop.
Description
Technical Field
The utility model relates to a power grid secondary is technically improved, is changed, fortune dimension, is overhauld the field, especially relates to a join in marriage net secondary operation auxiliary device.
Background
The operation and maintenance periods of primary and secondary equipment in a power grid are greatly different, the secondary equipment in a modern power grid is widely applied to microelectronic products and has the characteristics of easy aging and easy damage, a protection power supply plug-in unit is generally replaced once in 6 years, and the whole protection device is generally replaced after 10 years of operation. Whereas primary devices in the grid can often operate for twenty years or even longer. On the other hand, with the increasing demand of power supply reliability by power consumers, especially in a power distribution network below 35kV, power failure operation will greatly affect the production activities of people and enterprises, easily cause complaints of user opinions, and thus, uninterrupted maintenance and technical improvement operation of power enterprises is also more and more common. In the power distribution network, because the environment of the secondary equipment is poor, the maintenance capability of personnel is obviously insufficient, the protection device is more prone to failure damage, and the technical improvement and replacement operation of the distribution network protection is relatively more frequent. Therefore, in a power distribution network, technical improvement, operation and maintenance of protection are often carried out under the condition that primary equipment is not powered off.
The uninterrupted technical change replacement operation of the distribution network protection has great defects because the equipment is uninterrupted. One is that the job interval is unprotected during the crafting job: in the protection replacement process, if a system fails, a fault point cannot be removed in an electrified operation interval, and the fault point must be removed by relying on superior protection action, so that the fault range is expanded. Secondly, the correctness of a secondary loop for protecting technical improvement and replacement operation cannot be ensured: after the protection device is replaced, because the newly replaced protection device cannot be used for carrying out the whole set of transmission test, the correctness of the secondary circuit of the technical improvement operation cannot be ensured, and thus, the replaced protection device may have larger operation hidden trouble.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a join in marriage net secondary operation auxiliary device, join in marriage net secondary operation to present, especially the problem of the operation of not cutting off the power supply of protection, a join in marriage net secondary operation auxiliary device has been designed, the device is joining in marriage net and is not cutting off the power supply protection technical change and change the operation in-process, correctly replace former protection on the one hand, make live working interval continue to take the protection operation, on the other hand is through using simulation circuit breaker, the protection that makes the new installation can test its whole group's action circuit, guarantee technical change and change the exactness of operation back secondary circuit, with the problem of proposing in solving above-mentioned background art.
In order to realize the purpose, the utility model adopts the following technical scheme: a distribution network secondary operation auxiliary device comprises a protection module, a simulation circuit breaker, a shell and a supporting structure, wherein the protection module comprises a power circuit, a miniature protection device, a current circuit wiring terminal, a tripping and closing pressing plate and a mechanism tripping and closing wiring terminal; the simulated circuit breaker comprises a switching-on/off position indicator, a switching-on/off button, a switch action time regulator, a switching-on/off input and switch position output terminal and an integrated test switch; the simulation circuit breaker is connected with the protection module through an integrated test switch for short-circuiting or disconnecting the mechanism tripping and closing connection terminal and the switching-on and switching-off input and switch position output terminal.
As a further improvement of the utility model: the simulation circuit breaker and the protection module are of an integrated structure, and loops between the simulation circuit breaker and the protection module are mutually independent.
As the further improvement of the utility model: the power supply loop passes through an independent air switch and is used for the miniature protection device; the miniature protection device comprises a liquid crystal display, an indicator light, an input panel and an operation loop, wherein the current loop wiring terminal is used for accessing three-phase currents A, B and C and zero-sequence currents of a current loop of a secondary winding of the current transformer; the mechanism tripping and closing connecting terminal directly outputs the action signal of the miniature protection device to a tripping ring or a closing ring of the mechanism tripping and closing connecting terminal; the tripping and closing pressing plate comprises a tripping pressing plate and a closing pressing plate, and the tripping pressing plate and the closing pressing plate are used for electrically isolating tripping or closing action commands from the miniature protection device to the tripping and closing wiring terminal of the mechanism.
As a further improvement of the utility model: the on-off position indication is used for indicating the on-off state of the simulation circuit breaker; the switching-on and switching-off button is used for manually switching on and switching off the simulation circuit breaker; the switch action time regulator is used for regulating the opening and closing action time of the simulation circuit breaker; and the opening and closing input and switch position output terminal is used for accessing tripping and closing signals and outputting switch position signals of the analog circuit breaker.
As the further improvement of the utility model: the shell is all-metal light shell, bearing structure adopts magnetism to inhale the structure to do benefit to and join in marriage anti-interference and placing of net secondary operation field device.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the protection module correctly replaces original protection in uninterrupted protection technical improvement replacing operation, technical improvement replacing operation can be safely carried out by setting an original protection fixed value, even if a fault occurs at an on-site operation interval, the fault can be successfully removed, and uninterrupted protection is realized.
2. The addition of the simulation circuit breaker ensures that the secondary circuit of a new protection device can carry out 'whole group transmission test' in the uninterrupted protection technical improvement replacement operation, verifies the correctness of the circuit after the technical improvement operation, and eliminates the possible hidden danger of the secondary circuit.
3. The protection module and the simulation circuit breaker adopt a compact and integrated structure, and can perform self-checking on the whole working energy; the bearing structure of magnetism absorption, the external binding post of simplifying are applicable to developing fast of distribution network electric power technical transformation operation.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the housing and the supporting structure of the present invention;
FIG. 3 is a functional self-checking wiring diagram of the present invention;
FIG. 4 is a wiring diagram of the present invention for accomplishing the replacement protection;
figure 5 is the utility model discloses accomplish the wiring picture that simulation circuit breaker inserted.
In the figure: the device comprises a power supply circuit 1, a miniature protection device 2, a current circuit wiring terminal 3, a tripping and closing pressing plate 4, a mechanism tripping and closing wiring terminal 5, a switching-on and switching-off input and switching-off position output terminal 6, a switching-on and switching-off position indication 7, a switching action time regulator 8, a switching-on and switching-off button 9, an integrated test switch 10, a shell 11 and a support structure 12.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-2, in an embodiment of the present invention, an auxiliary device for secondary operation of a distribution network is composed of a protection module, a simulation circuit breaker, a housing 11 and a supporting structure 12, where the protection module includes a power circuit 1, a miniature protection device 2, a current circuit terminal 3, a mechanism tripping and closing terminal 5, and a tripping and closing pressing plate 4; the simulated circuit breaker comprises a switching-on/off position indicator 7, a switching-on/off button 9, a switch action time regulator 8, a switching-on/off input and switch position output terminal 6 and an integrated test switch 10; the simulation circuit breaker is connected with the protection module through an integrated test switch 10 which is used for short-circuiting or disconnecting the mechanism tripping and closing wiring terminal 5 and the opening and closing input and switch position output terminal 6. The protection module is applicable to a power distribution network below 35kV, can correctly replace an original protection device at construction operation intervals, can be configured with various protection action logics and fixed values suitable for operation of the power distribution network, has an indicator light and a tripping and closing pressing plate 4, meets the requirement of selectable switching-on and switching-off of protection of the power distribution network, and aims to solve the problem that in the technical improvement and replacement operation of uninterrupted power protection, a newly replaced protection device cannot perform the whole set of transmission tests of a switch, so that the correctness of a secondary circuit cannot be guaranteed.
Furthermore, the simulation circuit breaker and the protection module are of an integrated structure, and loops between the simulation circuit breaker and the protection module are independent. The protection module and the simulation circuit breaker adopt a compact and integrated structure, and can be integrally used for self-checking.
Further, the power supply circuit 1 is used for the micro-protection device 2 through an independent air switch; the miniature protection device 2 comprises a liquid crystal display, an indicator light, an input panel and an operation loop, and the current loop wiring terminal 3 is used for accessing three-phase currents A, B and C and zero-sequence currents of a current loop of a secondary winding of the current transformer; the mechanism tripping and closing connecting terminal 5 directly outputs the action signal of the miniature protection device 2 to a tripping ring or a closing ring of the mechanism tripping and closing connecting terminal 5; the tripping and closing pressing plate 4 comprises a tripping pressing plate and a closing pressing plate, and the tripping pressing plate and the closing pressing plate are used for electrically isolating tripping or closing action commands from the miniature protection device 2 to the mechanism tripping and closing wiring terminal 5. The current loop connecting terminal 3 of the protection module is externally arranged at a proper position of the panel of the utility model, the current loop connecting terminal 3 is clear and simple, and a current type terminal which is easy to connect is adopted, and a short wire and a wire clamp are configured, so that the current loop of the operating equipment can be conveniently accessed; the mechanism tripping and closing connecting terminal 5 of the protection module is externally arranged at a proper position of the panel of the utility model, the mechanism tripping and closing connecting terminal 5 is clear and simple, a connecting terminal which is easy to connect is adopted, the tripping and closing secondary circuit of the switching mechanism can be quickly accessed, and the opening and closing position indication 7 is used for indicating the opening and closing state of the simulation circuit breaker; the opening and closing button 9 is used for manually opening and closing the analog circuit breaker; the switch action time regulator 8 is used for regulating the opening and closing action time of the simulation circuit breaker; the switching-on/off input and switch position output terminal 6 is used for accessing tripping and closing signals and outputting switch position signals of the analog circuit breaker, and the switching-on/off position indication 7 of the analog circuit breaker adopts two indicator lamps which are respectively used for indicating the switching-on/off states of the analog circuit breaker; the opening and closing button 9 of the miniature analog circuit breaker adopts two switch buttons which are respectively used for opening or closing the analog circuit breaker, and the switch state of the miniature analog circuit breaker can be synchronously switched to the opening or closing state; the on-off input and switch position output terminal 6 of the analog circuit breaker, and the on-off input terminal in the on-off input and switch position output terminal 6 is used for accessing an external loop to a switching-off or switching-on action signal cable of the analog circuit breaker; a switch position output terminal in the switching-on/off input and switch position output terminal 6 is used for outputting the on/off state of the analog circuit breaker and outputting the on/off state in a passive hard contact mode; simulation circuit breaker's integrative test switch 10, be used for with mechanism tripping and closing binding post 5 with divide-shut brake input terminal short circuit in divide-shut brake input and the on off position output terminal 6 is convenient for the device function is from the check-up.
Furthermore, shell 11 is all-metal light shell, bearing structure 12 adopts magnetism to inhale the structure to do benefit to and join in marriage anti-interference and the placing of net secondary operation field device. The utility model discloses for the convenience of the convenient and safe operation of electric power operation site operation, dispose bearing structure 12. The device adopts the metal shell, thereby being beneficial to the anti-interference and stable operation of the equipment under the high-voltage environment; the supporting structure 12 adopts a magnetic attraction structure, can be attracted and hung on the surface of a metal plate, and is suitable for power construction operation sites of a power distribution network switch cabinet, a ring main unit and the like.
The utility model discloses novel structure, the operation is stable, the utility model discloses when using, concrete implementation process as follows:
certain distribution network operation is a certain spaced protection device of change for the circumstances of not having a power failure, and this operation is used the utility model discloses develop the process of operation as follows:
(1) Develop the utility model discloses a function self-test. As shown in fig. 3, a temporary power supply is connected to the power circuit 1 of the present invention, the tripping and closing pressing plate 4 is released, a test current is added to the current circuit connecting terminal 3 by a tester, and the functions of the protection module of the present invention, such as running state, sampling, protection action, etc., are verified to be correct; using a switching-on and switching-off button 9 to observe that the switching-on and switching-off position indication 7 of the simulated circuit breaker is correct; put through integrative test switch 10, drop into trip clamp plate 4, add test current once more at current loop binding post 3, the utility model discloses a protection module will move trip simulation circuit breaker, remove 4 back protection modules of trip clamp plates and can't trip simulation circuit breaker.
(2) Setting the operating parameters of the utility model. According to the protection definite value condition of operation interval, set up the utility model discloses a protection module's definite value removes protection module's tripping and closing clamp plate 4. When the switching operation time of the present operation interval is known, the switching operation time adjuster 8 simulating the circuit breaker is provided, and it is confirmed that the integrated test switch 10 is in the off state.
(3) And accessing a current loop of the operation interval. The protection of the original protection device at the operation interval is quitted, and the current of the original protection device is short-circuited into a current loop connecting terminal 3 of the protection module; all current return circuits of former protection all insert the utility model discloses afterwards, break off former protection device's current return circuit.
(4) And switching in a jump ring loop of the operation interval switch mechanism. The former protection device's in disconnection operation interval operating power supply, the disconnection the utility model discloses a power supply circuit 1, with operation spaced on-off mechanism jump circle secondary circuit with the utility model discloses protection module's mechanism jumps the combined floodgate binding post 5 and connects.
(5) And finishing the operation of the replacement protection. Close once more the utility model discloses a power supply circuit 1 confirms the utility model discloses protection module operates normally, drops into tripping and closing clamp plate 4, makes the utility model discloses can replace former protection operation, the wiring is as shown in fig. 4. The supporting module 12 is magnetically attracted and placed at a proper position of the secondary chamber at intervals of construction operation.
(6) And switching in the simulated circuit breaker of the new protection device at an operation interval. The new protection debugging of the operation interval needs to be connected with the switching state position and the switching mechanism opening and closing coil loop, and the comprehensive test of the protection can be normally finished. Connect the new protection device of operation interval to the on-off ring circuit cable of switching mechanism to the utility model discloses the on-off input terminal among miniature simulation circuit breaker's the on-off input and the on-off output terminal 6, the wiring is as shown in figure 5.
(7) And debugging the new protection device at the operation interval. The tripping operation of the new protection device and the whole group test can be carried out on the simulation circuit breaker, the protection module is mutually independent with the simulation circuit breaker power supply and does not influence the normal operation of the protection module.
(8) And (4) recovering the operation of the new protection device. The experimental correct back of new protection device in operation interval has set up new protection device's definite value, removes the utility model discloses a jump combined floodgate clamp plate 4, the disconnection the utility model discloses a power supply circuit 1, follow the utility model discloses resume operation spaced electric current and on switching mechanism's jump closed loop circle to new protection device.
Although the present description is described in terms of embodiments, not every embodiment includes only a single embodiment, and such description is for clarity only, and those skilled in the art should be able to integrate the description as a whole, and the embodiments can be appropriately combined to form other embodiments as will be understood by those skilled in the art.
Therefore, the above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application; all changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (5)
1. A distribution network secondary operation auxiliary device comprises a protection module, a simulation circuit breaker, a shell (11) and a supporting structure (12) arranged on the shell (11),
the protection module comprises a power supply loop (1), a miniature protection device (2), a current loop wiring terminal (3), a tripping and closing pressing plate (4) and a mechanism tripping and closing wiring terminal (5);
the simulated circuit breaker comprises a switching-on/off position indicator (7), a switching-on/off button (9), a switch action time regulator (8), a switching-on/off input and switch position output terminal (6) and an integrated test switch (10);
the simulation circuit breaker is connected with the protection module through an integrated test switch (10) which is used for short-circuiting or disconnecting the mechanism tripping and closing wiring terminal (5) and the opening and closing input and switch position output terminal (6).
2. The auxiliary device for secondary operation of a distribution network as claimed in claim 1, wherein the analog circuit breaker and the protection module are of an integrated structure, and the loops between the analog circuit breaker and the protection module are independent of each other.
3. A distribution network secondary operation auxiliary device according to claim 1, characterized in that said power circuit (1) is used for said miniature protective device (2) through an independent air switch; the miniature protection device (2) comprises a liquid crystal display, an indicator light, an input panel and an operation loop, wherein the current loop wiring terminal (3) is used for accessing three-phase currents A, B and C and zero-sequence currents of a current loop of a secondary winding of the current transformer; the mechanism tripping and closing wiring terminal (5) directly outputs the action signal of the miniature protection device (2) to a tripping ring or a closing ring of the mechanism tripping and closing wiring terminal (5); the tripping and closing pressing plate (4) comprises a tripping pressing plate and a closing pressing plate, and the tripping pressing plate and the closing pressing plate are used for electrically isolating tripping or closing action commands from the miniature protection device (2) to the mechanism tripping and closing wiring terminal (5).
4. The auxiliary device for secondary operation of the distribution network according to claim 1, wherein the switching position indication (7) is used for indicating the switching state of the analog circuit breaker; the opening and closing button (9) is used for manually opening and closing the analog circuit breaker; the switch action time regulator (8) is used for regulating the opening and closing action time of the simulation circuit breaker; and the switching-on/off input and switch position output terminal (6) is used for accessing tripping and closing signals and outputting switch position signals of the analog circuit breaker.
5. The auxiliary device for the secondary operation of the distribution network according to claim 1, wherein the housing (11) is an all-metal light housing, and the supporting structure (12) adopts a magnetic attraction structure, so as to facilitate the anti-interference and placement of the devices on the secondary operation site of the distribution network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221436041.1U CN217954588U (en) | 2022-06-09 | 2022-06-09 | Join in marriage net secondary operation auxiliary device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221436041.1U CN217954588U (en) | 2022-06-09 | 2022-06-09 | Join in marriage net secondary operation auxiliary device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217954588U true CN217954588U (en) | 2022-12-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221436041.1U Active CN217954588U (en) | 2022-06-09 | 2022-06-09 | Join in marriage net secondary operation auxiliary device |
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| Country | Link |
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| CN (1) | CN217954588U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117878822A (en) * | 2024-03-12 | 2024-04-12 | 国网山东省电力公司安丘市供电公司 | Relay protection conversion device, circuit detection method and teaching method |
-
2022
- 2022-06-09 CN CN202221436041.1U patent/CN217954588U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117878822A (en) * | 2024-03-12 | 2024-04-12 | 国网山东省电力公司安丘市供电公司 | Relay protection conversion device, circuit detection method and teaching method |
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