CN219915680U - Relay protection device open-in/open-out module testing system - Google Patents

Abstract

The utility model discloses a relay protection device open-in and open-out module test system, which comprises a PC (personal computer), a test fixture and open-in and open-out modules, wherein the test fixture is connected with an open-in and open-out module to be tested through an open-in and open-out conversion module in a signal manner, and the open-in and open-out conversion module is used for normalization treatment of different open-in and open-out modules; the opening and closing module is provided with a left terminal and a right terminal, and the left terminal and the right terminal are connected with the elastic terminal of the test fixture during testing; the PC is in signal connection with the test fixture and is used for supplying power and connecting communication to the module to be tested. According to the relay protection device open-in and open-out module testing system, the test fixture realizes the normalization treatment of the module to be tested by selecting the open-in and open-out conversion module matched with the module to be tested, the requirement of mass production test of different open-in and open-out modules with the same structure under one set of fixture can be met, and the expansion can be realized by only matching the conversion module for other open-in and open-out modules with the same structural design.

Description

Relay protection device open-in/open-out module testing system

Technical Field

The utility model relates to a relay protection device open-in/open-out module testing system, and belongs to the technical field of automatic testing of power system protection devices.

Background

Along with the continuous development of the power system automation technology, the reliability requirement of the relay protection device is higher and higher. With the continuous rise of labor cost, the characteristic of insufficient reliability of manual testing is also more prominent, and the demand of automatic testing is prominent.

In the development process of automatic test equipment for mass production of all modules in a device, a power system secondary equipment production enterprise usually designs different test jigs for different modules to realize connection of ports of the corresponding modules, and then develops corresponding tests for specific ports and functions, the modules are in one-to-one correspondence with the test jigs, and the modules of a CPU/HMI usually adopt the scheme. The open/close module is used as a product category, so that the model is multiple, the configuration quantity in the device is multiple, and the continuous changing requirements exist along with the number and definition of open/close channels of different products required by users, so that the scheme is not economical.

The open channel test scheme is that the PC realizes open voltage value adjustment control through an adjustable voltage source, the adjusted voltage signal is connected to a module to be tested through a clamp, the module to be tested realizes open logic value judgment, the logic value is sent to the PC through the clamp in a communication mode, the PC carries out channel function judgment according to the control voltage value and the read logic value, and the open input voltage value corresponding to a logic value change point is ensured to be in a control area.

The PC sends the set control word to the module to be tested by the clamp, the module sets the action state of the open relay according to the received control word, and the PC reads the action state as an open signal by the clamp and compares the open signal with the original set value to judge the channel function.

It can be seen that developing independent and expensive test fixtures for these modules with differences in the number of channels and differences in the definition of wiring is a relatively inefficient and expensive solution, and a need exists for a relay protection device open-in/open-out module test system.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provides a relay protection device open-in/out module testing system, a testing fixture realizes the normalization processing of a module to be tested by selecting an open-in/out conversion module matched with the module to be tested, the requirement of mass production testing of different open-in/out modules with the same structure under one set of fixture can be met, and the expansion can be realized only by matching the conversion module with other open-in/out modules with the same structural design.

In order to achieve the above purpose/solve the above technical problems, the present utility model is realized by adopting the following technical scheme: the system comprises a PC, a test fixture and an open-close module, wherein the test fixture is connected with the open-close module to be tested through an open-close conversion module in a signal manner, and the open-close conversion module is used for normalizing the open-close module;

the opening and closing module is provided with a left terminal and a right terminal, and the left terminal and the right terminal are connected with the elastic terminal of the test fixture during testing;

the PC is in signal connection with the test fixture and is used for supplying power and connecting communication to the module to be tested.

Further, the open/close module comprises a DI open/close module/DO open/DIO open/close module/SIG signal module, and the structural dimensions of the modules are identical.

Further, the open-close conversion module is matched with the open-close module.

Further, the open-close conversion module is provided with two fixed terminals, wherein,

one fixed terminal is connected with the left side terminal of the open/close module to be tested, and the other fixed terminal is connected with the test fixture and used for converting terminals with different channel numbers and different wiring definitions into normalized open/close connection signals and connecting the normalized open/close connection signals back to the test fixture through the other fixed terminal.

Further, the open-close conversion module is detachably mounted on the test fixture.

Furthermore, the open-close conversion module is connected with the test fixture in a plug-in mode.

Compared with the prior art, the utility model has the beneficial effects that:

according to the relay protection device open-in open-out module testing system provided by the utility model, the test fixture realizes the normalization processing of the module to be tested by selecting the open-in open-out conversion module matched with the module to be tested, so that the mass production testing requirements of different open-in open-out modules with the same structure under one set of fixture can be met, and the expansion can be realized by only matching the conversion module with other open-in open-out modules with the same structural design.

Drawings

FIG. 1 is a block diagram of a system architecture of a test system for an on-off module of a relay protection device according to a first embodiment;

FIG. 2 is a schematic diagram of an embodiment of an on/off switching module of a relay protection device;

FIG. 3 is a flowchart of a testing system for an on-off module of a relay protection device according to an embodiment.

Detailed Description

The utility model is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and are not intended to limit the scope of the present utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.

Embodiment one:

as shown in fig. 1, the embodiment provides a test system for an open-in/out module of a relay protection device, which comprises a PC, a test fixture and an open-in/out module, wherein the test fixture is in signal connection with the open-in/out module to be tested through an open-in/out conversion module, and the open-in/out conversion module is used for normalization processing of the open-in/out module;

the opening and closing module is provided with a left terminal and a right terminal, and during testing, the left terminal and the right terminal are connected with the elastic terminal of the test fixture, wherein the left terminal is used for realizing the external opening and closing connection of the relay protection device, and the right terminal is used for realizing the functions of communication connection in the relay protection device, module power supply and the like;

the PC is in signal connection with the test fixture and is used for power supply and communication connection of the module to be tested, the PC and control software and hardware realize regulation of an input voltage value of an open loop, the module to be tested judges an open logic value according to the input voltage value and sends the open logic value through a communication link, and the PC determines whether an open channel is normal or not according to the controlled voltage value and the up-sending logic value; the PC sends out loop command control words through the communication link, the module to be tested controls the action state of the relay according to the received loop command, and the PC and control software and hardware compare the action state of the relay as the loop command after the loop command is read and the loop command is compared with the control command to determine whether the loop channel is normal or not.

In some embodiments, according to different application requirements in practical situations, the open-in/open-out module includes a DI open-in module/DO open-out module/DIO open-in/open-out module/SIG signal module, although different types of open-in/open-out modules to be tested have different terminal wiring definitions according to different application requirements, the sizes of the modules and the types and positions of welding terminals are the same, so that it is ensured that the open-in/open-out modules of different types can share one set of test fixture to realize the test.

In some embodiments, to achieve the mating of the open-and-close conversion module with the open-and-close module, the open-and-close conversion module is mated with the open-and-close module.

In some embodiments, to achieve a normalization of the open-in/open-out conversion module to different open-in/open-out modules, the open-in/open-out conversion module is provided with two fixed terminals, wherein,

one fixed terminal is connected with the left side terminal of the opening/closing module to be tested, the other fixed terminal is connected with the test fixture and is used for converting terminals with different channel numbers and different wiring definitions into normalized opening/closing connection signals and connecting the normalized opening/closing connection signals back to the test fixture through the other fixed terminal; as shown in fig. 2, the left terminal of the open-close conversion module is connected with the left external connection terminal of the module to be tested through a clamp, and different open-close wiring is connected to the right terminal through wiring in the board according to the uniform specification definition; the right side terminal of the open-in/open-out conversion module is used as a standard definition terminal to be connected back to the test fixture, so that normalization processing of different modules is realized; for the open channels, the conversion module properly connects channels with the same rated voltage value in parallel, so that the number of terminals is reduced; for open channels, the conversion modules provide a total of 32 connections.

In some embodiments, due to the variety of types of the open/close modules to be tested, the conversion modules matched with the open/close modules need to be used in testing, and the different conversion modules have identical structural dimensions, so that the open/close conversion modules can be detachably mounted on the same test fixture for being mounted on the same test fixture.

In some embodiments, to achieve a detachable connection between the open-and-close conversion module and the test fixture, the open-and-close conversion module is connected to the test fixture by means of plugging.

When the actual test is carried out, as shown in fig. 3, the PC starts an automatic test flow, reads the bar code of the to-be-tested open/close module, judges whether the bar code belongs to a measurable range, and can obtain the corresponding number of open/close channels and the rated voltage value of the open/close channels of the module according to a database after confirmation;

after the PC powers on the single module to be tested, determining that the module has an opening function to be tested: firstly, sending an opening command to set the relay state to be inactive, and connecting the relay contact state to the peripheral of the PC machine as an opening signal through a test clamp to read the relay contact state into the PC machine; setting relay action by sending out command, reading data again by PC machine and carrying out exclusive OR on the two times of data, indicating that the corresponding channel is changed under control command, comparing exclusive OR result with module configuration out quantity to determine each out channel condition; if the open function does not exist, not executing the corresponding test;

after the PC powers on the single module to be tested, determining that the module has an opening function to be tested: determining upper and lower limits of the test according to rated voltage values of all channels stored in a database; firstly, setting an adjustable power supply voltage as a test lower limit by software, properly delaying and reading an on logic value through communication after the voltage is stable; performing the processes of adjusting the adjustable power supply voltage value and reading the open logic value in a recycling way, and xoring the read open logic value with the historical value to obtain 1, wherein the 1 indicates that the logic value of the corresponding channel is changed within the specified upper and lower limit ranges; if the exclusive OR is 1 until the upper voltage limit is not found, indicating that the corresponding channel is abnormal; if there is no open function, no corresponding test is performed.

In summary, in the test system for the open/close module of the relay protection device provided by the embodiment, the test fixture realizes the normalization processing of the module to be tested by selecting the open/close conversion module matched with the module to be tested, so that the requirement of mass production test of different open/close modules with the same structure under one set of fixture can be met, and the expansion can be realized only by matching the conversion module with other open/close modules with the same structural design.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present utility model, and such modifications and variations should also be regarded as being within the scope of the utility model.

Claims (6)

1. The system is characterized in that the test fixture is connected with an open-in/out module to be tested through the open-in/out conversion module, and the open-in/out conversion module is used for normalization processing of the open-in/out module;

the opening and closing module is provided with a left terminal and a right terminal, and the left terminal and the right terminal are connected with the elastic terminal of the test fixture during testing;

the PC is in signal connection with the test fixture and is used for supplying power and connecting communication to the module to be tested.

2. The apparatus of claim 1, wherein the in-out module comprises a DI in-out module/DO in-out module/DIO in-out module/SIG signal module, each module having substantially the same physical dimensions.

3. The system of claim 1, wherein the switch module is adapted to the switch module.

4. The test system of the on-off module of the relay protection device according to claim 1 or 3, wherein the on-off conversion module is provided with two fixing terminals, wherein,

one fixed terminal is connected with the left side terminal of the open/close module to be tested, and the other fixed terminal is connected with the test fixture and used for converting terminals with different channel numbers and different wiring definitions into normalized open/close connection signals and connecting the normalized open/close connection signals back to the test fixture through the other fixed terminal.

5. The system of claim 1, wherein the switch module is removably mounted to the test fixture.

6. The system of claim 5, wherein the switch module is connected to the test fixture by plugging.