CN219657818U - Relay protection test loop switching device - Google Patents
Relay protection test loop switching device Download PDFInfo
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- CN219657818U CN219657818U CN202320738206.9U CN202320738206U CN219657818U CN 219657818 U CN219657818 U CN 219657818U CN 202320738206 U CN202320738206 U CN 202320738206U CN 219657818 U CN219657818 U CN 219657818U
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- 238000012360 testing method Methods 0.000 title claims abstract description 129
- 238000009434 installation Methods 0.000 claims abstract description 8
- 238000012795 verification Methods 0.000 claims description 18
- 230000009471 action Effects 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000007689 inspection Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
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Abstract
The utility model provides a relay protection test return circuit auto-change over device, includes the auto-change over device body, the auto-change over device body is square box, install a plurality of modules respectively in the box, connect through the circuit between, and install a control panel in one side of box, set up the installation notch on control panel, the module that corresponds is installed to the embedding in every installation notch, the module is by analog test line jack module, analog selection change over switch module, the signal reset button, the test line jack module of opening and the test line jack module of opening are constituteed, analog test line jack module sets up in the position that control panel is close to the top, be provided with analog selection change over switch module under analog test line jack module, analog selection change over switch module's below left side position is provided with the signal reset button, the right side of signal reset button has set gradually the test line jack module of opening and the test line jack module of opening from top to bottom.
Description
Technical Field
The utility model relates to a relay protection test loop switching device, and belongs to the field of relay protection equipment.
Background
According to the relevant standard regulations of relay protection and safety automatic devices, the protection of the variable group needs to be checked regularly during each unit maintenance, including protection device check, secondary circuit check, relay check and the like. Aiming at the protection and maintenance work of the generator-transformer group, three main problems exist at present:
first, in terms of workload, as the number of the protection related to the variable group is large, the number of secondary circuits is much larger than that of other protection screen cabinets, and the number of analog quantities of the output quantity of the relay protection check instrument is limited, so that the check of various types of protection cannot be completed at one time. Therefore, the test wiring needs to be adjusted back and forth in the protection and verification process, which is time-consuming and labor-consuming and has the risk of misoperation in the process of adjusting the test wiring.
Secondly, in terms of maintenance time margin, since the protection and verification work of the variable group relates to two switches at the high voltage side of 500kV, all maintenance works are required to be completed in the period of stopping and re-operating the switches at the high voltage side, and for relay protection maintenance teams, the protection and maintenance of the variable group which is not faced by the relay protection maintenance teams, other system protection and verification works are more, and the conditions of time tightness and heavy tasks exist.
Third, in terms of maintenance safety control, because the maintenance screen cabinet has an electrified loop in operation, the traditional verification method has a large safety operation risk, such as: the maintainer shorts the outlet relay loop by mistake to cause tripping of the operation switch, the maintainer adjusts the test line to cause vibration of the terminal strip to cause CT open circuit, the maintainer mistakenly walks the equipment interval by mistake, and the like, and the event of mistaken tripping of the 500kV switch caused by misoperation of the operation loop of the relay protection maintainer happens once in the factory.
In summary, to solve the above problems, a relay protection test circuit switching device is designed to solve the above safety management problem and improve the maintenance efficiency.
Disclosure of Invention
The utility model provides a relay protection test loop switching device which can improve the verification efficiency of a relay protection device and shorten the overhaul operation time on the premise of ensuring safety and has the characteristics of simple structure, multiple functions, safety, practicability and the like.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the relay protection test loop switching device comprises a switching device body, wherein the switching device body is a square box body, a plurality of modules are respectively installed in the box body and are connected through a circuit, a control panel is installed on one side of the box body, a plurality of installation notches matched with the modules in size are formed in the control panel, corresponding modules are embedded and installed in each installation notch, each module consists of an analog test line jack module, an analog quantity selection switch module, a signal reset button, an output test line jack module and an input test line jack module, wherein the analog test line jack module is arranged at a position, close to the top, of the control panel, the analog selection switch module is arranged under the analog test line jack module, the signal reset button is arranged at the left side of the lower part of the analog selection switch module, and the output test line jack module and the input test line jack module are sequentially arranged on the right side of the signal reset button from top to bottom; the analog quantity test line jack module is used as a current test source of the switching device, the analog quantity selection switching switch module is used for selecting a current loop required by verification protection, the signal reset button is used for receiving a reset signal and a reset action signal by the protection device when the signal reset button is pressed down, and the opening quantity test line jack module are respectively used for corresponding use according to the requirement of relay protection verification content.
As preferable: the analog quantity test line jack module consists of four groups of analog quantity test line jacks, wherein the first group of jacks are jacks IA, IB, IC and IN respectively, a second group of jacks are arranged right below the first group of jacks 7 and are jacks Ia, ib, IC and IN respectively, a third group of jacks are arranged on the right side of the first group of jacks and are jacks UA, UB, UC and UN respectively, and a fourth group of jacks are arranged right below the third group of jacks and are jacks Ua, ub, uv and Un respectively.
As preferable: the analog quantity selection switch module right below the analog quantity test line jack module consists of a current output operation area and a voltage output operation area, the current output operation area is arranged on the right left side of the voltage output operation area, a plurality of analog quantity selection switch jacks are respectively arranged in the current output operation area and the voltage output operation area, the analog quantity selection switch jacks in the current output operation area are respectively connected with a first group of jacks and a third group of jacks in the analog quantity test line jack module through cables to form a current loop of the switching device, the analog quantity selection switch jacks in the voltage output operation area are respectively connected with a second group of jacks and a fourth group of jacks through cables to form a voltage loop of the switching device, and the current loop and the voltage loop are respectively provided with a switch for controlling the opening and closing of the current loop and the voltage loop.
As preferable: the current output operation area consists of a first current output operation area and a second current output operation area, and a first group of current output terminals and a second group of current output terminals are respectively arranged in the first current output operation area and the second current output operation area; the voltage output operation area is composed of a first voltage output operation area and a second voltage output operation area, and a first group of voltage output terminals and a second group of voltage output terminals are respectively arranged in the first voltage output operation area and the second voltage output operation area.
As preferable: the outlet test line jack module consists of four groups of outlet test line jacks, wherein the jacks are respectively opened at the position of the circuit breaker, the jacks are opened at the position of the main valve, and the jacks are opened in a three-phase inconsistent manner and the other jacks are opened.
As preferable: the opening test line jack module consists of two groups of feedback input jacks, namely a first feedback input jack and a second feedback input jack.
The beneficial effects of the utility model are as follows:
the utility model designs a relay protection test loop switching device, which greatly improves the safety aspect and the efficiency aspect of protection and inspection work. In the aspect of economic benefit, according to incomplete speculation, the maintenance operation time can be shortened by about 30%, and if two secondary circuit switching devices are arranged, the protection inspection work of the two-sided protection screen cabinets can be finished at the same time, so that the maintenance operation time is further saved by 50%. And due to portability of operation, two persons can finish the whole protection and inspection work of the transformer group, so that the investment of the labor cost of enterprises is saved. In the aspect of social benefit, protection misoperation caused by a charged loop in misoperation operation of an maintainer can be effectively avoided, and the safe and stable operation of the system is influenced.
Drawings
FIG. 1 is a plan view of a relay protection test loop switching apparatus of the present utility model;
FIG. 2 is a schematic diagram of a current loop of the present utility model;
FIG. 3 is a schematic diagram of a voltage loop of the present utility model;
fig. 4 is a schematic wiring diagram of the neutral point circuit of the medium current and voltage circuit of the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.
The utility model is further described below with reference to the drawings and specific examples, which are not intended to be limiting. As shown in fig. 1, the relay protection test circuit switching device comprises a switching device body, wherein the switching device body is a square box body, a plurality of modules are respectively installed in the box body and are connected through a circuit, a control panel 1 is installed on one side of the box body, a plurality of installation notches matched with the modules in size are formed in the control panel 1, corresponding modules are embedded and installed in each installation notch, each module consists of an analog test line jack module 2, an analog selection switch module 3, a signal reset button 4, an output test line jack module 5 and an input test line jack module 6, wherein the analog test line jack module 2 is arranged at a position, close to the top, of the control panel 1, the analog selection switch module 3 is arranged under the analog test line jack module 2, the signal reset button 4 is arranged at the left side position under the analog selection switch module 3, and the signal reset button 4 is sequentially provided with the output test line jack module 5 and the input test line jack module 6 from top to bottom; the analog quantity test line jack module 2 is used as a current test source of the switching device, the analog quantity selection switching switch module 3 is used for selecting a current loop required by verification protection, the signal reset button 4 is used for receiving a reset signal and a reset action signal by the protection device when the button is pressed, and the opening quantity test line jack module 5 and the opening quantity test line jack module 6 are respectively used for corresponding use according to the requirement of relay protection verification content.
The analog test line jack module 2 is composed of four groups of analog test line jacks, a first group of jacks 7 are jacks IA, IB, IC and IN respectively, a second group of jacks 8 are arranged right below the first group of jacks 7 and are jacks Ia, ib, IC and IN respectively, a third group of jacks 9 are arranged on the right side of the first group of jacks 7 and are jacks UA, UB, UC and UN respectively, and a fourth group of jacks 10 are arranged right below the third group of jacks 9 and are jacks Ua, ub, uv and Un respectively.
The analog quantity selection switch module 3 directly below the analog quantity test line jack module 2 is composed of a current output operation area 11 and a voltage output operation area 12, the current output operation area 11 is arranged on the right left side of the voltage output operation area 12, a plurality of analog quantity selection switch jacks 13 are respectively arranged in the current output operation area 11 and the voltage output operation area 12, the analog quantity selection switch jacks 13 in the current output operation area 11 are respectively connected with the first group of jacks 7 and the third group of jacks 9 in the analog quantity test line jack module 2 through cables to form a current loop of the switching device, the analog quantity selection switch jacks 13 in the voltage output operation area 12 are respectively connected with the second group of jacks 8 and the fourth group of jacks 10 through cables to form a voltage loop of the switching device, and switch 14 are arranged on the current loop and the voltage loop and used for controlling the opening and closing of the current loop and the voltage loop.
The current output operation area 11 is composed of a first current output operation area 21 and a second current output operation area 22, and a first group of current output terminals 23 and a second group of current output terminals 24 are respectively arranged in the first current output operation area 21 and the second current output operation area 22; the voltage output operation region 12 is composed of a first voltage output operation region 25 and a second voltage output operation region 26, and a first group of voltage output terminals 27 and a second group of voltage output terminals 28 are respectively arranged in the first voltage output operation region 25 and the second voltage output operation region 26.
The open-quantity test line jack module 5 consists of four groups of open-quantity test line jacks, namely a breaker position open-out jack 15, a main valve position open-out jack 16, a three-phase inconsistent open-out jack 17 and other open-out jacks 18.
The opening test line jack module 6 is composed of two groups of feedback input jacks, namely a first feedback input jack 19 and a second feedback input jack 20.
Examples:
according to the relay protection test loop switching device, the analog quantity selection switch is used for selecting a current loop required by verification protection, the input end of the switch is connected to the bottom end of an analog quantity test wire jack by using a cable, and the output end of the switch is connected to the position, corresponding to a current wiring terminal, of the protection device by using a test wire. When the switch is in the "ON" position, the current is output, and when the switch is in the "OFF" position, the current is not output, and the total number of the analog quantity selection switches is 25.
The upper end of the relay protection test loop switching device is connected with a current output loop of the relay protection test device by using a test wire, the bottom end of the relay protection test loop switching device is connected with the input end of a switch by using a cable, and the relay protection test loop switching device is used as a current test source of the switching device, and two groups of analog test wire jacks are shared.
The relay protection test loop switching device is characterized in that the upper end of the relay protection test loop switching device is connected with a switching value input port of the relay protection test device by using a test wire, and the lower end of the relay protection test loop switching device is connected with a signal open-loop of the protection device by using the test wire. For testing the action time of the protection device or as an action condition for the protection check. The two groups of opening test wire jacks are used according to the requirements of relay protection verification content.
The input end of the relay protection test circuit switching device is connected with the switching value output port of the relay protection test device by using a test wire, and the output end of the relay protection test circuit switching device is connected with the signal open-in circuit of the protection device by using the test wire. For signaling protection devices, such as: circuit breaker contact positions, main valve contact positions, etc. And 4 groups of opening quantity test wire jacks are used according to the requirements of relay protection verification content.
One end of a signal reset button of the relay protection test circuit switching device is connected to the positive end of a public wiring terminal of a circuit of a protective device through a test wire, the other end of the signal reset button is connected to the position of the circuit of the protective device through the test wire, and when the button is pressed down, the protective device receives a reset signal and a reset action signal.
The operation method of the utility model is as follows:
as shown in fig. 2 and 3, 1) inserting one end of a group of current test wires into a first path analog quantity test wire jack (a first group of jacks) of the relay protection test circuit switching device, and inserting the other end of the test wires into a first path current output terminal (a first group of current output terminals) of the relay protection test device;
2) Inserting one end of another group of current test wires into a second path analog quantity test wire jack (a second group of jacks) of the relay protection test circuit switching device, and inserting the other end of the test wires into a second path current output terminal (a second group of current output terminals) of the relay protection test device;
3) One end of a group of signal wires is inserted into a first path opening amount test wire jack of the relay protection test circuit switching device, and the other end of the test wire is inserted into a signal opening terminal (a first feedback input jack) of the relay protection test device;
4) A second opening amount test wire jack (a second feedback input jack) is used according to the protection and verification requirements, and the method is the same as that of the first opening amount test wire jack;
5) Correspondingly connecting current, voltage and switching value output test lines of the relay protection test loop switching device to loop wiring terminals of the protection device;
6) According to the requirement, operating the change-over switch of the relay protection test loop switching device, if the main transformer differential protection is checked, switching the change-over switch S1 to the ON state, switching the change-over switch S6 to the ON state, and switching the other change-over switches to the OFF state, so that the protection check work can be completed by adjusting the two paths of current output by the relay protection test device;
7) In the verification process, if the protection device is required to be reset, the signal reset operation of the protection device can be completed only by operating the signal reset button of the relay protection test loop switching device;
8) If the main transformer differential protection device is required to verify the excitation differential protection after the verification work is completed, the protection verification work can be completed only by putting the change-over switch S3 to the ON state and putting the change-over switch S7 to the ON state and putting the other change-over switches to the OFF state and adjusting the two paths of current output by the relay protection test device;
9) The rest protection checking methods are the same as the above, and the whole protection checking process does not need to adjust test wiring.
Fig. 4 is a schematic wiring diagram of the neutral point circuit of the medium current and voltage circuit of the present utility model.
The preferred embodiments of the present utility model are provided only to help illustrate the present utility model. The preferred embodiments are not exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof. The above disclosure is only a few specific embodiments of the present utility model, but the present utility model is not limited thereto, and any changes that can be thought by those skilled in the art should fall within the protection scope of the present utility model.
Claims (6)
1. The utility model provides a relay protection test return circuit auto-change over device, includes auto-change over device body, its characterized in that: the switching device comprises a square box body, wherein a plurality of modules are respectively arranged in the box body and are connected through circuits, one side of the box body is provided with a control panel (1), a plurality of installation notches matched with the modules in size are formed in the control panel (1), corresponding modules are embedded and arranged in each installation notch, each module consists of an analog test line jack module (2), an analog selection switch module (3), a signal reset button (4), an output test line jack module (5) and an input test line jack module (6), the analog test line jack module (2) is arranged at a position, close to the top, of the control panel (1), an analog selection switch module (3) is arranged under the analog test line jack module (2), a signal reset button (4) is arranged at the left side of the lower part of the analog selection switch module (3), and the right side of the signal reset button (4) is sequentially provided with the output test line jack module (5) and the input test line jack module (6) from top to bottom; the analog quantity test line jack module (2) is used as a current test source of the switching device, the analog quantity selection switching switch module (3) is used for selecting a current loop required by verification protection, the signal reset button (4) is used for receiving a reset signal and a reset action signal by the protection device when the button is pressed down, and the opening test line jack module (5) and the opening test line jack module (6) are respectively used for corresponding use according to the requirement of relay protection verification content.
2. The relay protection test circuit switching device according to claim 1, wherein: the analog quantity test line jack module (2) is composed of four groups of analog quantity test line jacks, the first group of jacks (7) are jacks IA, IB, IC and IN respectively, a second group of jacks (8) are arranged right below the first group of jacks (7) and are jacks Ia, ib, IC and IN respectively, a third group of jacks (9) are arranged on the right side of the first group of jacks (7) and are jacks UA, UB, UC and UN respectively, and a fourth group of jacks (10) are arranged right below the third group of jacks (9) and are jacks Ua, ub, uv and Un respectively.
3. The relay protection test circuit switching device according to claim 2, wherein: the analog quantity selection switch module (3) right below the analog quantity test line jack module (2) is composed of a current output operation area (11) and a voltage output operation area (12), the current output operation area (11) is arranged on the right left side of the voltage output operation area (12), a plurality of analog quantity selection switch jacks (13) are respectively arranged in the current output operation area (11) and the voltage output operation area (12), the analog quantity selection switch jacks (13) in the current output operation area (11) are respectively connected with a first group of jacks (7) and a third group of jacks (9) in the analog quantity test line jack module (2) through cables, a current loop of the switching device is formed, the analog quantity selection switch jacks (13) in the voltage output operation area (12) are respectively connected with a second group of jacks (8) and a fourth group of jacks (10) through cables, a voltage loop of the switching device is formed, and a switch (14) is arranged on the current loop and the voltage loop for controlling the opening and closing of the current loop and the voltage loop.
4. The relay protection test circuit switching device according to claim 3, wherein: the current output operation area (11) consists of a first current output operation area (21) and a second current output operation area (22), and a first group of current output terminals (23) and a second group of current output terminals (24) are respectively arranged in the first current output operation area (21) and the second current output operation area (22); the voltage output operation area (12) is composed of a first voltage output operation area (25) and a second voltage output operation area (26), and a first group of voltage output terminals (27) and a second group of voltage output terminals (28) are respectively arranged in the first voltage output operation area (25) and the second voltage output operation area (26).
5. The relay protection test circuit switching device according to claim 1, wherein: the opening test line jack module (5) is composed of four groups of opening test line jacks, namely a breaker position opening jack (15), a main valve position opening jack (16), a three-phase inconsistent opening jack (17) and other opening jacks (18).
6. The relay protection test circuit switching device according to claim 1, wherein: the opening test line jack module (6) consists of two groups of feedback input jacks, namely a first feedback input jack (19) and a second feedback input jack (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320738206.9U CN219657818U (en) | 2023-04-06 | 2023-04-06 | Relay protection test loop switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320738206.9U CN219657818U (en) | 2023-04-06 | 2023-04-06 | Relay protection test loop switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219657818U true CN219657818U (en) | 2023-09-08 |
Family
ID=87857529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320738206.9U Active CN219657818U (en) | 2023-04-06 | 2023-04-06 | Relay protection test loop switching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219657818U (en) |
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2023
- 2023-04-06 CN CN202320738206.9U patent/CN219657818U/en active Active
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