CN216926864U - Intermediate connection device convenient for intelligent switch relay protection test - Google Patents
Intermediate connection device convenient for intelligent switch relay protection test Download PDFInfo
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- CN216926864U CN216926864U CN202121156570.1U CN202121156570U CN216926864U CN 216926864 U CN216926864 U CN 216926864U CN 202121156570 U CN202121156570 U CN 202121156570U CN 216926864 U CN216926864 U CN 216926864U
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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Abstract
The utility model discloses an intermediate connection device convenient for an intelligent switch relay protection test, which comprises an intelligent switch body, a switch controller, a relay protection tester and a junction box, wherein the junction box is provided with: the relay protection tester comprises a first interface, a second interface and a wiring terminal, wherein the first interface is used for connecting the intelligent switch body, the second interface is used for connecting the switch controller, and the wiring terminal is used for connecting an additional test analog quantity of the relay protection tester; the intelligent switch body and the switch controller form a complete control loop through the junction box, and simultaneously, the relay protection tester can be used for testing and simulating current and voltage quantities on the junction box.
Description
Technical Field
The utility model relates to the technical field of switch tests, in particular to an intermediate connection device convenient for an intelligent switch relay protection test. The applicant is for cooperating automatic construction, has purchased a batch of this kind of intelligence switch recently, has carried out relay protection debugging test to it by my unit, has nevertheless encountered a problem that hinders experimental going on at the in-process of debugging.
Background
In recent years, in order to strengthen fault study and judgment of a distribution network and promote automatic construction of power distribution, a plurality of provincial power companies in China popularize and use an intelligent switch of the distribution network. However, in the process of carrying out the relay protection debugging test, the problem that the test is prevented from being carried out exists: the intelligent switch and the switch controller are designed separately, and the intelligent switch and the switch controller need to be connected through an aviation plug so as to realize the measurement and control and communication functions of the intelligent switch; meanwhile, a control loop and a measurement loop are arranged in the intelligent switch controller, the control loop is required to be connected to the switch body during switch debugging test, and analog current and voltage are added to the measurement loop of the controller, so that analog control over the switch is realized, and protection fixed value and action delay data are measured. However, the control loop and the measurement loop of the intelligent switch controller are integrated into one interface, after the controller is connected with the switch body, the whole interface is occupied, and the relay protection tester for the test cannot add analog quantity to the measurement loop of the controller.
Therefore, a manufacturer of the intelligent switch of the distribution network is consulted, and the manufacturer recommends that large current is conducted on the primary side of the intelligent switch to verify the protection constant value. However, this method requires a large current generator for current rise, and the large current generator is relatively extensive in adjustment and insufficient in accuracy, and the protection action delay cannot be measured.
Because the protection function of the intelligent switch is likely to need to be matched with the related protection function of the transformer substation in a time difference manner, in order to prevent the error jumping of the power station outgoing line caused by the improper matching of the level difference due to the time error when the distribution network fault occurs, the precision of the protection constant value and the action delay of the intelligent switch must be ensured. The related specifications DL-T478-2013 Relay protection and automatic device general technical conditions 4.3.3 and 4.3.4 also have clear requirements on protection fixed values and time delay, and if the numerical values measured in the test exceed the error range, the product is unqualified.
And with the continuous promotion of the distribution network automation project, more intelligent switches can be installed on a distribution network in the future, and the power failure accident can be caused by the fault of any one switch, so that the social and economic losses are caused, and therefore, in order to ensure the safety and the benefit of a power grid, the intelligent switches are qualified by 100% of tests, and a better mode must be found to accurately test the intelligent switches.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides the intermediate connection device which is convenient for the intelligent switch relay protection test to be carried out, and can effectively solve the prior technical problem.
The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides an intermediate junction device convenient to experimental going on of intelligence switch relay protection, includes intelligence switch body, switch controller, relay protection tester, still includes the terminal box, be provided with on the terminal box: the relay protection tester comprises a first interface, a second interface and a wiring terminal, wherein the first interface is used for connecting the intelligent switch body, the second interface is used for connecting the switch controller, and the wiring terminal is used for connecting an additional test analog quantity of the relay protection tester; the intelligent switch body and the switch controller form a complete control loop through the junction box, and simultaneously, the relay protection tester can be used for testing and simulating current and voltage quantities on the junction box.
In the above technical solution, preferably, the intelligent switch body includes a current transformer and a voltage transformer.
In the above technical solution, preferably, the current transformer is an alternating current sensor.
In the above technical solution, preferably, the voltage transformer is an ac voltage transformer.
In the above technical solution, preferably, the transformation ratio of the current transformer is 600A/1V.
In the above technical solution, preferably, the transformation ratio of the voltage transformer is
In the above technical solution, preferably, the connection terminal is led out from the inside of the junction box and is connected to the relay protection tester through a test line.
In the above technical solution, preferably, the first interface and the second interface are respectively provided with an aviation plug.
In the test process, firstly, the wiring of the test junction box is completed, then, a test wire on the relay protection tester is connected to the junction box, the tester is used for applying test simulation measurement to obtain fixed value data and protection time delay, whether the data error is within a standard specification allowed value is judged, and if the data error is beyond the standard specification allowed value, the test junction box is unqualified.
The utility model has the beneficial effects that: 1. the problem of unable accurate test intelligence switch controller protection definite value and protection action time delay is solved for intelligence switch protection debugging test can normally go on, ensures to install 100% qualified to the intelligence switch of joining in marriage the net in batches, has eliminated the intelligent switch protect function and has abnormally leaded to the hidden danger of grid loss voltage qualification rate and house number when having a power failure, brings great benefit for the electric wire netting safe operation. 2. The original common column switch test is that the connection is directly carried out on the measuring port of the controller by using a contact pin, the connection is difficult, the connection is not firm enough, and simultaneously, the connection is not safe enough. Compared with a protection debugging test method of a common pole-mounted switch, the middle connecting device is a junction box, so that the test wiring efficiency is greatly improved, the time for carrying out switch warehousing tests in batches is saved, meanwhile, the test junction box is provided with a special wiring terminal, and the whole test junction box is made of an insulating material, so that the test process is safer and more reliable.
Drawings
The utility model is further illustrated by the following examples in conjunction with the drawings.
FIG. 1 is a schematic view of the structural connection of the present invention.
In the figure, 1, an intelligent switch body, 2, a switch controller, 3, a relay protection tester, 4, a junction box, 41, a first interface, 42, a second interface, 43, a wiring terminal and 44 are test wires.
Detailed Description
As shown in fig. 1, a specific embodiment of the present invention: the utility model provides an intermediate junction device convenient to experimental going on of intelligence switch relay protection, includes intelligent switch body 1, switch controller 2, relay protection tester 3, still includes terminal box 4, be provided with on terminal box 4: a first interface 41 for connecting the intelligent switch body 1, a second interface 42 for connecting the switch controller, and a connection terminal 43 for connecting the relay protection tester 3, wherein the connection terminal 43 is led out from the inside of the junction box 4 and is connected to the relay protection tester 3 through a test line 44, and the first interface 41 and the second interface 42 are respectively provided with an aviation plug; the intelligent switch body 1 and the switch controller 2 form a complete control loop through the junction box 4, and simultaneously, the relay protection tester 3 can be used for testing and simulating current and voltage quantities on the junction box 4.
The intelligent switch body 1 comprises a current transformer and a voltage transformer, wherein the current transformer is an alternating current sensor and is 600A/1V; the voltage transformer is an alternating current voltage transformer with a transformation ratio of
In the test process, firstly, the wiring of the test junction box 4 is completed, then a test wire on the relay protection tester 3 is connected to the junction box 4, the tester applies test simulation measurement to obtain fixed value data and protection time delay, whether the data error is within the allowable value of the standard specification is judged, and if the data error is beyond the allowable value, the data is unqualified.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and simple modifications, equivalent changes and modifications may be made without departing from the technical scope of the present invention.
Claims (8)
1. The utility model provides an intermediate junction device convenient to experimental going on of intelligence switch relay protection, includes intelligence switch body, switch controller, relay protection tester, its characterized in that still includes the terminal box, be provided with on the terminal box: the first interface is used for connecting the intelligent switch body, the second interface is used for connecting the switch controller, and the wiring terminal is used for connecting the relay protection tester; the intelligent switch body and the switch controller form a complete control loop through the junction box, and simultaneously, the relay protection tester can be used for testing and simulating current and voltage quantities on the junction box.
2. The intermediate connection device for facilitating intelligent switch relay protection test according to claim 1, wherein the intelligent switch body comprises a current transformer and a voltage transformer.
3. The intermediate connection device for facilitating intelligent switch relay protection test according to claim 2, wherein the current transformer is an alternating current sensor.
4. The intermediate connection device for facilitating intelligent switch relay protection test according to claim 2, wherein the voltage transformer is an ac voltage transformer.
5. The intermediate connection device for facilitating the intelligent switch relay protection test according to claim 3, wherein the transformation ratio of the current transformer is 600A/1V.
6. The intermediate connection device for facilitating intelligent switch relay protection test according to claim 4, wherein the transformation ratio of the voltage transformer is
7. The intermediate connection device for facilitating intelligent switch relay protection test according to claim 1, wherein the connection terminal is led out from the inside of the connection box and connected to the relay protection tester through a test wire.
8. The intermediate connection device convenient for intelligent switch relay protection test to be carried out according to claim 1, wherein aviation plugs are respectively arranged on the first interface and the second interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121156570.1U CN216926864U (en) | 2021-05-27 | 2021-05-27 | Intermediate connection device convenient for intelligent switch relay protection test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121156570.1U CN216926864U (en) | 2021-05-27 | 2021-05-27 | Intermediate connection device convenient for intelligent switch relay protection test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216926864U true CN216926864U (en) | 2022-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121156570.1U Active CN216926864U (en) | 2021-05-27 | 2021-05-27 | Intermediate connection device convenient for intelligent switch relay protection test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216926864U (en) |
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2021
- 2021-05-27 CN CN202121156570.1U patent/CN216926864U/en active Active
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