CN212483710U

CN212483710U - Automatic terminal test device for supporting networking cascade test

Info

Publication number: CN212483710U
Application number: CN202020822929.3U
Authority: CN
Inventors: 周克林; 帅金泉
Original assignee: Guangzhou Sitai Information Technology Co ltd
Current assignee: Guangzhou Sitai Information Technology Co ltd
Priority date: 2020-05-18
Filing date: 2020-05-18
Publication date: 2021-02-05
Anticipated expiration: 2030-05-18

Abstract

The utility model discloses an automatic terminal test device for supporting the networked cascade test of a material, which comprises an Internet of things module, a processing unit, a navigation connection module, a power supply module and a box body; the Internet of things module is configured to receive a test scheme issued by a test management and control platform and transmit the test scheme to the processing unit; the Internet of things module is further configured to upload a test result of the distribution automation terminal to the test management and control platform; the navigation connection module is electrically and separably electrically connected with the processing unit through the box body. The utility model discloses can support and connect the module removable based on the long-range download test scheme of thing networking, distribution automation terminal full automation test that can compatible difference reduces the work load and the error rate that detect the wiring, has improved distribution automation terminal's detection efficiency, has still reduced fortune dimension personnel's manpower.

Description

Automatic terminal test device for supporting networking cascade test

Technical Field

The utility model particularly relates to an automatic terminal test device of support thing networking cascade test.

Background

Reliable operation of the distribution automation system is beneficial to improving the reliability of power supply. Before the distribution automation terminal is connected to the power system, when the distribution automation terminal is regularly checked and when a fault is generated and the fault is eliminated, the distribution automation terminal needs to be detected so as to ensure that the distribution automation terminal meets the relevant standards of the power industry and the technical indexes specified by manufacturers.

At present, detection of a distribution automation terminal mainly depends on manual wiring, and then a relay protection tester is added, so that time and labor are consumed, and wiring is easy to make mistakes. In addition, the wiring mode, communication protocol and protection configuration of the distribution automation terminals of different manufacturers have large differences, and technicians of the corresponding manufacturers are required during detection, so that the operation and maintenance cost is increased. It should also be noted that the communication of the existing distribution automation terminal generally depends on WiFi or bluetooth, and is not suitable for the equipment development trend in the context of the internet of things.

Therefore, those skilled in the art are dedicated to develop an automated terminal testing apparatus supporting networking cascade test, which can support networking remote configuration test schemes, is compatible with tests of different distribution automated terminals, and can reduce the workload and error rate of detection wiring.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an automatic terminal test device for supporting the Internet of things cascade test, aiming at the defects of the prior art, which comprises an Internet of things module, a processing unit, a navigation connection module, a power supply module and a box body;

the Internet of things module, the processing unit, the navigation connection module and the power supply module are connected with the box body; the power supply module is configured to provide power for the internet of things module and the processing unit;

the Internet of things module is configured to receive a test scheme issued by a test management and control platform and transmit the test scheme to the processing unit; the Internet of things module is also configured to upload a test result of the distribution automation terminal to the test management and control platform;

the processing unit is configured to automatically control the output quantity of the navigation connection module based on the test scheme, and test the power distribution automation terminal; the processing unit is further configured to receive an input quantity of the test result fed back by the navigation module;

the navigation connection module is electrically and separably electrically connected with the processing unit through the box body.

Furthermore, the processing unit comprises an extended I/O module, and the extended I/O module is detachably and electrically connected with the aerial connection module through a pin jack.

Further, the aerial connection module comprises a shell and a conductive part; the shell can rotate relative to the conductive part and can drive the conductive part to move back and forth; the shell is connected with the box body through threads, and the conductive part is detachably and electrically connected with the expanded I/O module.

Further, the housing and the conductive portion are coaxial.

Furthermore, the housing of the navigation connection module is connected with the box body through a clamping groove.

Further, a tripping module is arranged between the navigation connection module and the processing unit, and the tripping module is configured to cut off the electrical connection between the navigation connection module and the processing unit when the navigation connection module and the processing unit start to be separated.

Further, the trip module includes a travel switch.

Furthermore, the navigation connection module further comprises a buckle, and the navigation connection module is fixed with the box body through the buckle after being installed in place.

Further, the internet of things module at least supports one or more of the following protocols: 4G, 5G, TCP/IP protocol, NB-IoT protocol.

Further, the system also comprises an interaction module, wherein the interaction module at least comprises one or a combination of the following components: display screen, pilot lamp, loudspeaker; the interaction module is connected with the processing unit.

Further, the interaction module is capable of recording

Further, the processing unit further comprises a protocol converter, and the protocol converter supports protocol conversion among IEC61080, IEC61850, IEC61870, RS422, RS485 and RS 232.

Further, the processing unit comprises an FPGA.

Further, the processing unit supports an oceaneconnect platform.

Further, the navigation connection module comprises a voltage terminal, a current terminal, a remote signaling terminal, a remote control terminal and a communication terminal.

Further, the communication terminal supports optical fiber communication.

Compared with the prior art, the utility model discloses a beneficial technological effect is:

1) the method is based on an Internet of things remote cascade test control platform, a standard test scheme is downloaded, control of a processing unit is combined, the test process is full-automatic, manual equipment parameters are not needed, plug and check are realized, the test efficiency is improved, and operation and maintenance manpower and dependence on outside service technicians are reduced;

2) the aerial connection module and the modularized joint are arranged, so that complex wiring of the relay protection tester is avoided;

3) the aviation connection module is replaceable, the aviation connection module with faults can be replaced in time, and the testing device is also suitable for aviation connectors of different distribution automation terminals.

The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention.

Drawings

FIG. 1 is a schematic diagram of an automated terminal test equipment circuit connection and external device connection for support networking cascade testing in accordance with a preferred embodiment of the present invention;

FIG. 2 is a schematic structural view of the test device of the embodiment shown in FIG. 1;

FIG. 3 is a schematic diagram of a processing unit and an extended I/O module according to a preferred embodiment of the present invention;

fig. 4 is a schematic view of a slot-type connection of the navigation connection module according to a preferred embodiment of the present invention;

FIG. 5 is a schematic structural diagram of an aerial connection module with a threaded housing according to a preferred embodiment of the present invention;

fig. 6 is a schematic diagram of the operation of a preferred embodiment of the present invention;

FIG. 7 is a schematic diagram of the chip connection of the processing unit according to a preferred embodiment of the present invention;

fig. 8 is a schematic circuit diagram of an optocoupler module according to a preferred embodiment of the invention;

fig. 9 is a schematic circuit diagram of an AD conversion module according to a preferred embodiment of the present invention;

fig. 10 is a chip diagram of the internet of things module according to a preferred embodiment of the present invention.

Detailed Description

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings for clarity and understanding of the technical contents. The present invention may be embodied in many different forms of embodiments, and the scope of the invention is not limited to the embodiments described herein.

The utility model discloses in "the volume of opening into of everywhere", "the volume of opening out", indicate "remote control" or "remote signalling" volume in the electric power system, including but not limited to the volume that represents the switching state of primary and secondary equipment. For example, the open/close state of the auxiliary contact reflecting the open/close state of the feeder switch is transmitted to the processing unit through the navigation connection module as an open/close amount. For another example, the protection logic outlet of another distribution automation terminal is used as an input volume to be input into the distribution automation terminal, and the logic judgment of the distribution automation terminal is started.

The utility model discloses in each department "remote control", "remote signalling", "telemetering measurement" and "remote regulation", indicate the four remote information that electric power system fortune was examined. Wherein, the telemetering is that the electrical parameters of the electrical equipment, such as voltage, current and power, are obtained by using a communication technology; the remote signaling is the switching state of the electrical equipment, such as the switching-on and switching-off states of a contactor, a feeder switch and an isolation disconnecting link, and the outlet or joint tripping amount of the protection logic; the remote control means remotely controlling the on/off of the electrical equipment; and the remote measurement is to remotely control the on-load voltage regulation gear of the transformer.

Fig. 1 and fig. 2 are schematic diagrams illustrating the present invention and connection with external equipment, where the testing apparatus 1 includes an internet of things module 12, a processing unit 11, a navigation connection module 13, a power supply module 14, and a box body 15; the power supply module 14 provides power for the internet of things module 12 and the processing unit 11; the internet of things module 12 acquires a test scheme through the cascaded test management and control platform 2 and transmits the test scheme to the processing unit 11; the internet of things module 12 can also upload the test result of the distribution automation terminal 3 to the test management and control platform 2; the processing unit 11 automatically controls the output quantity of the navigation connection module 13 based on the test scheme, and tests the power distribution automation terminal 3; the processing unit 11 also receives the input quantity fed back by the navigation module 13; one end of the aerial connection module 13 is detachably and electrically connected with the processing unit 11 through the box body 15, and the other end of the aerial connection module is aerial-connected with an aerial connector of the power distribution automation terminal 3. The internet of things module 12, the processing unit 11, the navigation connection module 13 and the power supply module 14 are connected with the box body 15.

In some embodiments, the internet of things module 12 may be disposed inside the box 15 or on the surface thereof. Similarly, the power module 14 may be disposed inside the case 15; or arranged on the surface of the test device 1 and powered by an external power supply.

Through changing the navigation connection module 13, the usability detection of the power distribution automation terminal 3 compatible with different types of the test device 1 can be realized, the universality is strong, the investment of test equipment is saved, and the technical requirements on test personnel are reduced.

In some embodiments, the processing unit 11 comprises an FPGA. Because the I/O port function of the FPGA can be edited, and the number of the I/O ports is rich, different navigation modules 13 can be adapted through configuration. For example, for distribution automation terminals 3 of different manufacturers, the electrical quantities transmitted by the wires at the same location of the aerial connection module 13 may change from open-in to open-out, or from telemetry to remote control. At this time, based on the test scheme downloaded by the test management and control platform 2, the processing unit 11 reconfigures the I/O port of the FPGA, and then identifies and tests different distribution automation terminals 3 through the navigation connection module 13.

In some embodiments, the processing unit 11 employs an integrated PCB, so that the integral wiring of the testing device 1 is not affected when the navigation connection module 13 is separated from or connected to the processing unit 11, the processing unit 11 is provided with an extended I/O module 111, and the extended I/O module 111 and the navigation connection module 13 are electrically connected in a detachable manner through a pin jack. For example, one end of the extended I/O module 111 is connected to the processing unit fixing 11 in the form of PCB trace, and the other end is electrically connected to the navigation connection module 13 in a detachable manner. FIG. 3 illustrates one embodiment of an expansion I/O module 111; the expansion I/O module 111 and the processing unit 11 based on the FPGA form an upper-layer structure and a lower-layer structure; the upper layer is an expanded I/O module 111, and the expanded I/O module 111 is fixedly connected with the lower processing unit 11 in a PCI or DIP mode; the expansion I/O module 111 is arranged as a panel with a plurality of jacks; the aerial connection module 13 is connected with the jack of the expansion I/O module 111 through a pin. Optionally, the docking module 13 is connected to the pins of the expansion I/O module 111 via jacks. It should be noted that, in the present application, the PCI or DIP form refers to a form of mating pin and socket that satisfies the PCI or DIP design. For example, the expansion I/O module 111 has PCI pins, and the processing unit 11 has PCI jacks; alternatively, expansion I/O module 111 has PCI jacks and processing unit 11 has PCI pins.

In some embodiments, the processing unit 11 comprises an FPGA-based OceanConnect platform.

In some embodiments, the docking module 13 forms a drawer-type card slot connection with the housing 15 and the expansion I/O module 111. And pushing and pulling the navigation connection module 13 to realize the connection and separation of the navigation connection module 13 and the expansion I/O module 111, and further installing or replacing the navigation connection module 13. Fig. 4 is a schematic diagram of the drawer-type connection, in which the box 15 has a through slot 151, the contour of the housing of the docking module 13 matches the shape of the through slot 151, and the jack of the docking module 13 is connected to the pin of the extended I/O module 111. Optionally, the box body 15 integrates a plurality of through slots 151, and the through slots 151 include a square through slot 151 and a circular through slot 151 of a certain size to accommodate an aviation connector of the distribution automation terminal 3 in the market mainstream.

In some embodiments, docking module 13 may also be threadably connected to case 15; the housing 131 of the docking module 13 can rotate relative to the conductive portion 132 of the docking module 13, and the housing 131 can drive the conductive portion 132 to move back and forth relative to the box 15, so that the conductive portion 132 and the extended I/O module 111 can be electrically connected in a detachable manner. Alternatively, when the docking module 13 is cylindrical in shape, the housing 131 and the conductive portion 132 form a coaxial structure having an outer layer and an inner layer to reduce the volume of the docking module 13.

FIG. 5 is a schematic view of the docking module 13 with a threaded housing, the housing 131 having threads on its outer surface and being secured to the housing 15 by screwing; the inner wall of the housing 131 is a hollow cylinder with a smaller inner diameter at both ends and a larger inner diameter at the middle, and the outer contour of the conductive part 132 has a shape matching the size of the inner wall of the housing 131. When the housing 131 is screwed into or out of the box 15, that is, when the housing 131 moves towards the box 15, the conductive part 132 does not rotate, but moves towards the box 15 under the driving of the housing 131. Further, the conductive portion 132 approaches or moves away from the expansion I/O module 111 as the housing 131 rotates.

When replacing the navigation connection module 13, the processing unit 11 may still control the output and input of the navigation connection module 13, so that the tester may be injured by electric shock. For example, some distribution automation terminals 3 have a remote signaling potential of 24V or 110V dc, which exceeds the safe withstand voltage of human body; at this time, the replacement may cause the tester to get an electric shock. Thus, in some embodiments, the trip module is arranged such that the processing unit 11 stops outputting immediately when the navigation module 13 starts to disengage the processing unit 11. Optionally, the trip module selects a travel switch. When the navigation connection module 13 is installed in place, the contacts of the travel switch are compressed, the auxiliary contacts are closed, and the processing unit 11 can start testing; when the navigation connection module 13 starts to be separated, the contact of the travel switch is released, the auxiliary contact is disconnected, and the processing unit 11 can immediately stop testing; meanwhile, the travel switch also enables the navigation connection module 13 to be used for plug and test.

In some test situations, there may be large vibration or continuous vibration, for example, when a Feeder Terminal Unit (FTU) tests the switching of a Feeder switch, the switching of the Feeder switch may cause large vibration; when testing a TTU (transducer Terminal Unit), the operating distribution Transformer has continuous and uniform vibration. In some embodiments, in order to prevent the aerial connection module 13 from loosening or falling off in the test process, a buckle is arranged; after the navigation connection module 13 is installed in place, the navigation connection module is fixed with the box body 15 through the buckle.

In some embodiments, an interaction module, such as a display screen, an indicator light, a speaker, may also be provided to provide a visual or interactive interface, or to alert the distribution automation terminal 3 of the detected abnormality. For example, through the display screen, a tester can select a test scheme, analyze test results and the like, perform visual or interactive operations, realize automatic identification and automatic testing of the distribution automation terminal 3, generate and upload a detection report by one key, simplify operation steps, improve test efficiency, and facilitate timely discovery and problem solving.

In some embodiments, the internet of things module 12 is capable of supporting at least 4G, 5G, NB-IOT and TCP/IP protocols to accommodate data interaction with the cascaded test management and control platform 2 in different scenarios.

Different distribution automation terminal devices 3 may have different communication protocols due to manufacturer or technology upgrades. For example, the old generation of distribution automation terminal devices 3 is typically configured with the IEC61080-103/104 specification, and the new generation of distribution automation terminal devices 3 is typically IEC 61850; IEC61080, IEC61850 itself also contains several versions. Therefore, the processing unit 11 may also comprise a protocol converter to improve the compatibility to distribution automation terminal devices 3 having different communication protocols; the protocol converter at least can support protocol interconversion among IEC61080, IEC61850, IEC61870, RS422, RS485 and RS 232.

For aviation connectors of different distribution automation terminals 3, access tests corresponding to the distribution automation terminals 3 can be realized only by selecting corresponding aviation connection modules 13.

The following is a working process of the present invention shown by fig. 6 as follows:

selecting a proper air connection module 13, connecting an air connector of the distribution automation terminal 3 with the air connection module 13, and connecting the air connector and the air connection module 13 into the test device 1;

the testing device 1 automatically identifies the equipment ID of the distribution automation terminal 3, and acquires a standard testing scheme from the cascaded testing control platform 2 through the Internet of things module 12; or, the tester manually selects the manufacturer and the test scheme of the distribution automation terminal 3, and then obtains the standard test scheme from the cascaded test management and control platform 2 through the internet of things module 12;

the processing unit 11 updates the board card and the I/O configuration thereof according to the standard test scheme, automatically generates a test wiring diagram and wiring, and a tester executes a one-key test;

the processing unit 11 detects the availability of the distribution automation terminal 3 by outputting or accepting input through the navigation connection module 13; the processing unit 11 realizes automatic circulation among single test tasks in a test case control mode, and reduces human intervention in the test process;

after the test is finished, the processing unit 11 automatically receives and analyzes the form of each type of protocol data of each level, so that the automatic closed-loop recording of the test data and the automatic generation of a test report are realized, the dependence degree of a test site on technicians is reduced, the effect of releasing professional technicians is achieved, and the automation and closed-loop test of a test link are realized;

the processing unit 11 feeds back the test result to the test management and control platform 2.

The Distribution automation Terminal 3 may be an FTU, a TTU, or a feeder Terminal equipment RTU (Remote Terminal Unit) or a DTU (Distribution Terminal Unit).

In the one-key test process, a tester can also seek the support of the tester through the interaction module and the internet of things module 12 and the technicians of the cascaded test management and control platform 2, so as to solve the abnormal situation in the test process in time.

Fig. 7 shows a preferred chip-level embodiment of the processing unit of the present invention. The processing unit 11 adopts XC6SLX25 FPGA with 256 pins, and the input end of DI (digital input) of the processing unit 11 is isolated by an optical coupling module shown in FIG. 8, so that the remote control is prevented from being influenced by external mechanical disturbance or electromagnetic interference; the optical coupling module is connected with the expansion I/O module 111 through a SIGNAL terminal, or is connected with the expansion I/O module 111 through a PCI slot. As shown in fig. 7, the FPGA is also cascaded with a PROM module to prevent the program and data of the FPGA from being lost after the device is powered off. The FPGA exchanges data with the PROM and the Internet of things module 12 through a PROM _ B pin to realize standard test scheme storage and data storage; the FPGA is also connected to an expansion I/O module 111 via DI pins.

As shown in fig. 9, the FPGA is also cascaded with an AD conversion module to obtain an accurate telemetry result; the AD conversion module adopts an ADS7890 chip with multiple channels. The number of output pins of the AD conversion module can be configured, for example, by connecting pins 26 to 30 to the FPGA as the input of the telemetering.

Fig. 10 shows the internet of things module 12, which uses ESP8 type chip to support 4G and WiFi transmission; pin 8(UTXD _ O) and pin 27(URXD) in the ESP8 chip form a channel for transmitting and receiving data with processing unit 11.

As shown in fig. 7 to 10, the FPGA is connected to the AD conversion module and the DI and DO interfaces, and the AD conversion module and the DI and DO interfaces are further connected to the expansion I/O module 111 through the PCI; the FPGA is connected with the ESP8, and the ESP8 is also connected with the test management and control platform 2 through 4G or WiFi.

It should be noted that the chip-level embodiments shown in fig. 7 to 10 may be replaced by other chips or circuit modules capable of implementing corresponding functions in the art, or different functional pins may be used by the arrangement. The present application is not particularly limited.

The utility model relates to a device for automatic detection of a distribution automation terminal, which is connected with an aviation connector of the distribution automation terminal by arranging an aviation connection module, and avoids the complex wiring of applying a relay protection tester in the test process of the distribution automation terminal in the past; the aerial connection module is replaceable, so that the testing device can be compatible with different distribution automation terminals. In addition, a standard test scheme can be downloaded remotely, manual equipment parameters are not needed, the test process of the detection device is fully automated, the rapid test of the functions and the performance of the distribution automation terminal is realized, and the test time period is less than 3 minutes.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the teachings of this invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims

1. An automatic terminal test device for supporting networking cascade test is characterized by comprising an Internet of things module, a processing unit, a navigation connection module, a power supply module and a box body;

the Internet of things module is configured to receive a test scheme issued by a test management and control platform and transmit the test scheme to the processing unit; the Internet of things module is also configured to upload a test result of the distribution automation terminal to the test control platform;

2. The automated terminal testing apparatus supporting the internet of things cascade test as recited in claim 1, wherein the processing unit comprises an expansion I/O module, and the expansion I/O module is detachably and electrically connected with the navigation connection module through a pin jack.

3. The automated end-point testing apparatus supporting networked cascade testing of claim 2, wherein the docking module comprises a housing and a conductive portion; the shell can rotate relative to the conductive part and can drive the conductive part to move back and forth; the shell is connected with the box body through threads, and the conductive part is detachably and electrically connected with the expanded I/O module.

4. The automated end-point testing apparatus for supporting networked cascade testing of claim 3, wherein the housing and the conductive portion are coaxial.

5. The automated terminal testing apparatus supporting the internet of things cascade test as claimed in claim 2, wherein the housing of the navigation module is connected with the box body through a card slot.

6. The automated terminal testing apparatus supporting internet-of-things cascade testing of claim 1, wherein a trip module is included between the docking module and the processing unit, the trip module being configured to break an electrical connection between the docking module and the processing unit when the docking module and the processing unit begin to separate.

7. The automated end-point testing apparatus supporting networked cascade testing of claim 6, wherein the trip module comprises a travel switch.

8. The automated terminal testing apparatus supporting internet of things cascade testing according to claim 1, wherein the internet of things module supports at least one or more of the following protocols: 4G, 5G, TCP/IP protocol, NB-IoT protocol.

9. The automated terminal testing apparatus supporting networking cascade testing of claim 1, further comprising an interactive module, wherein the interactive module comprises at least one or a combination of: display screen, pilot lamp, speaker.

10. The automated end-point testing apparatus supporting networked cascade testing of claim 1, wherein the processing unit further comprises a protocol converter, the protocol converter supporting interconversion of at least: IEC61080, IEC61850, IEC61870, RS422, RS485 and RS 232.