CN112595931A - Comprehensive tester for testing distribution automation terminal equipment - Google Patents
Comprehensive tester for testing distribution automation terminal equipment Download PDFInfo
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Abstract
The invention discloses a comprehensive tester for testing distribution automation terminal equipment, which comprises a comprehensive device and a testing system, wherein the comprehensive device comprises: the system comprises a system management module, a standard source module, an input/output module, a clock synchronization module, an interface module and a touch screen; the test system is installed in a system management module or a client to realize an offline or online operation mode, and includes: the system comprises a human-computer interaction interface, a user management module, a parameter setting module, an automatic test control module and a test database. Compared with the prior art, the integrated device and the test system are arranged to serve as an integrated tester, and automatic detection is achieved locally or remotely, so that the portable test device is convenient to carry and improves test efficiency.
Description
Technical Field
The invention relates to the field of intelligent power grids, in particular to a comprehensive tester for testing distribution automation terminal equipment.
Background
With the rapid development of distribution network systems in recent years, most old-fashioned power distribution equipment does not meet the requirement of power grid automation, so the power distribution equipment is updated. The distribution automation terminal is generally provided with a set of independent communication power supply centralized screen assembly installation, can directly acquire distribution network real-time operation data and upload the data to the distribution network automation system, so that a superior master station system can monitor the distribution network operation condition at any time and make a correct decision.
In order to ensure reliable operation of the distribution automation terminal, testing before delivery and commissioning of the distribution automation terminal is a necessary link. The traditional testing method is mainly characterized in that the traditional tester and equipment are operated manually to create conditions required by testing of the distribution automation terminal, most of the distribution automation terminals are designed without a screen, PC (personal computer) end software is required to be remotely connected with the distribution automation terminal to be tested, and only manual observation of the response of the terminal under the testing conditions can be adopted. The distribution automation terminal also relates to the function of a signal transmission and distribution system, and the accuracy of signal transmission needs to be manually calibrated. The traditional test method has the defects of low efficiency, low test precision, low accuracy, difficulty in obtaining quantitative test results of test items similar to communication tests and the like due to human intervention in the test process.
Disclosure of Invention
The invention aims to provide a comprehensive tester for testing distribution automation terminal equipment, and aims to solve the technical problems of realizing local or remote automation detection, being convenient to carry and improving the testing efficiency.
In order to solve the problems, the invention adopts the following technical scheme: an integrated tester for testing distribution automation terminal equipment comprises an integrated device and a testing system, wherein the integrated device comprises:
the system management module is used for controlling each module of the comprehensive device and transmitting and collecting data, receiving the operation parameters of the tested device sent by the system and sending the collected data to the test system, wherein the collected data comprise change signals of the tested device, the change signals comprise opening signals, abnormal signals or action signals of the tested device, and the system management module is connected and communicated with the client;
the standard source module is connected with the system management module and used for outputting a corresponding alternating current power supply andor alternating current voltage according to the operation parameters of the device to be tested, which are sent by the system management module;
the system management module is used for acquiring an input signal, outputting the input signal, receiving a first instruction sent by the system management module through the interface module, outputting a corresponding output signal according to the first instruction, acquiring the input signal of the tested device and sending the acquired input signal to the system management module;
the clock synchronization module is used for timing the device and outputting a standard timing signal to the tested device in an electric B code mode;
the interface module is used for connecting and communicating with the tested device and the client, sending standard timing signals, acquisition of opening signals and output of opening signals to the tested device, forwarding data sent by the system management module, realizing communication between each module in the device and the tested device, and providing ports for the client to carry out remote maintenance, parameter setting and debugging;
the touch screen is used for displaying and inputting operation and is connected with the system management module;
the test system is installed in a system management module or a client to realize an offline or online operation mode, and includes:
the human-computer interaction interface is used for human-computer interaction;
the user management module is used for managing the user authority, setting the user authority through a human-computer interaction interface and sending the user authority to the parameter setting module;
the parameter setting module is used for extracting corresponding test item information from the test database according to the user permission, displaying the test item information through the human-computer interaction interface, extracting corresponding test cases from the test database according to the test item information, displaying the test cases through the human-computer interaction interface and sending parameter setting to the automatic test control module;
the automatic test control module is used for receiving the parameter information sent by the parameter setting module, sending the running parameters of the tested device to the system management module so as to control the output of the analog quantity and the output signal of the comprehensive tester, comparing the data change analog quantity or the state quantity of the tested device sent by the system management module with the corresponding verification quantity parameters in the test case to obtain a test result, generating a test report and displaying the test report through a human-computer interaction interface;
and the test database is used for storing data, including test cases and test item information.
Furthermore, the test system also comprises a database management module which is used for backing up, restoring, upgrading or deleting the data in the test database.
Further, the automated testing module comprises:
the test editing module is used for displaying through a human-computer interaction interface according to the test content of the current test item and the number of test cases and sending parameter information to the test execution module;
the test execution module is used for judging whether the tested device meets the test condition or not after receiving the parameter information sent by the parameter setting module, sending the analog quantity parameter and the state quantity parameter in the test case to the system management module when the test condition is met, and sending the analog quantity parameter and the state quantity parameter to the tested device for testing through the corresponding modules after the system management module receives the analog quantity parameter and the state quantity parameter;
the acquisition module is used for receiving the change signal of the tested device acquired by the system control module in the test process;
the comparison module is used for comparing the verification quantity parameters of the current test case in the test database with the variation signals generated by the tested device and collected in the test process, and sending the comparison result to the test report generation module;
and the test report generation module is used for outputting each test step and test result in the test process of the test case to the human-computer interaction interface in real time.
Further, the step of judging whether the tested device meets the test condition comprises the following steps:
step S101, detecting whether a test system establishes MMS connection with a tested device, sending a three-way handshake message of TCP connection to the tested device through the test system, if the tested device responds, indicating that the MMS connection is established, executing step S102, otherwise, failing, executing step S105, sending the handshake message of TCP connection to the tested device again, when three times of continuous failures, judging whether a plurality of test cases exist, if yes, executing the test of the next test case, otherwise, ending the test;
step S102, after sending the fixed value parameter of the tested device in the current test example to the tested device in the form of MMS message through the system control module, judging whether the tested device replies, when receiving the confirmation message of successful reply, namely the fixed value parameter is successfully downloaded to the tested device, and executing step S104; otherwise, prompting the downloading failure through a human-computer interaction interface, simultaneously judging whether a plurality of test cases exist, if so, returning to the step S101 to execute the test of the next test case, otherwise, finishing the test;
and step S104, converting the analog quantity parameters and the state quantity parameters into UDP103 message formats according to the analog quantity parameters and the state quantity parameters in each test case, and then sending the UDP103 message formats.
Further, when the network operation mode is adopted, the method further includes a step S103 between the step S102 and the step S104, whether the client is normally connected with the system management module is checked, the client sends a UDP103 message for establishing a connection to the system management module, the system management module sends a reply message to the client 1 after receiving the message for establishing the connection, the client is normally connected with the system management module, if the client does not receive the reply message, the step S106 is executed, when the UDP103 message sent by the client unsuccessfully passes through the UDP103 message for three times without obtaining the reply message of the system management module 2, the connection is determined whether a plurality of test cases exist, if yes, the step S101 is returned to execute the test of the next test case, otherwise, the method is ended.
Further, the database adopts SQLServer database.
Further, the interface module comprises an adaptive electric network, a USB interface, an optical B code output optical port, an alternating current output port and a switching value input/output port.
Furthermore, the integrated device also comprises a case, and the system management module, the standard source module, the input/output module, the clock synchronization module, the interface module and the touch screen are arranged in the case.
Further, the system management module is an industrial personal computer.
Compared with the prior art, the invention realizes local or remote automatic detection by setting the comprehensive device and the test system as a comprehensive tester, is convenient to carry and improves the test efficiency, has comprehensive functions and convenient operation, is externally connected with a PC client to use matched software, can carry out remote maintenance, parameter setting and debugging on the PC client through remote software, runs protection logic test cases in batch, and can greatly improve the test efficiency and the test accuracy; meanwhile, wired network connection is supported, and effective test is carried out in an environment inconvenient for field debugging.
Drawings
FIG. 1 is a schematic view of the structure of the integrated tester of the present invention.
FIG. 2 is a block diagram of the data flow of the integrated tester of the present invention.
FIG. 3 is a block diagram of software modules of the integrated test system of the present invention.
FIG. 4 is a flow chart of the testing of the system of the present invention.
FIG. 5 is a flow chart of the system performing the test of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 2, the present invention discloses a comprehensive tester for testing distribution automation terminal equipment, comprising: an integrated device (device) and a test system (system), the integrated device comprising:
the system management module 2 is used for controlling each module of the comprehensive device and transmitting and collecting data, receiving the operation parameters of the tested device sent by the system and sending the collected data to the test system, the collected data comprises change signals of the tested device, the change signals comprise opening signals, abnormal signals or action signals of the tested device, and the system management module 2 is connected with the client 1 for communication;
the standard source module 4 is connected with the system management module 2 and used for outputting a corresponding alternating current power supply and/or alternating current voltage according to the operation parameters of the device to be tested, which are sent by the system management module 2; the standard source module 4 can realize simultaneous output of 13 channels, that is, six voltages, six currents and one-phase UX voltage with different amplitudes, frequencies and phases can be simultaneously output. In addition, 2-20 th harmonic waves can be output, and the programmable auxiliary direct-current power supply also has the programmable auxiliary direct-current power supply output of 0-300V/0.6A; specifically, the standard source module 4 can output 7-phase alternating voltage and 6-phase alternating current, the output amplitude range of the voltage is 0-300V, and the precision is 0.1%; the output amplitude range of the current is 0-30A, and the precision is 0.1%. When the alternating voltage and the alternating current are connected in series, 3-phase alternating voltage of 0-600V and 1-phase alternating current of 0-100A can be output, and the precision is also 0.1%; the device has 0-300V direct current voltage output and 0-20A direct current output, and the precision is 0.5%;
the open-in and open-out module 5 is connected with the system management module 2 and is used for acquiring open-in signals, outputting open-out signals, receiving first instructions sent by the system management module 2 through the interface module 3, outputting corresponding open-out signals according to the first instructions and acquiring open-in signals of a tested device and then sending the open-in signals to the system management module 2; the first instruction is a closing or opening instruction of an opening contact generated by the system management module 2 according to the operation parameters of the tested device; the change signal is an input signal; specifically, when the open-in contact of the device to be tested is closed, the resistance between a pair of open-in contacts of the device to be tested and the device to be tested is very small and almost 0, the contact corresponding to the device can generate a deflection level, and the open-in and open-out module 5 feeds back level change information (open-in signal) to the system management module 2 through the interface module 3, so that the acquisition of the open-in signal of the device to be tested is realized; and outputting the opening signal of the corresponding opening contact which is closed or opened after receiving the opening or closing instruction of the opening contact sent by the system management module 2; in the invention, the open-in and open-out module 5 comprises 8 groups of open-in contacts and 4 groups of open-out contacts;
the clock synchronization module 6 is used for timing the device and outputting a standard timing signal to the tested device in an electric B code form; specifically, a stable and reliable timing signal is provided for the device by receiving a GPS or Beidou satellite signal and taking the time of the GPS or Beidou satellite signal as a reference; when the clock synchronization module 6 receives a GPS or Beidou satellite signal, the clock synchronization module converts the time into an IRIG-B code element format, and outputs the IRIG-B code element format to a tested device through an optical interface or an electrical interface of the interface module 7, so that the time synchronization of the tested device and the comprehensive device is realized;
the interface module 3 is used for connecting and communicating with the tested device and the client 1, sending standard timing signals, acquisition of opening signals and output of opening signals to the tested device, forwarding data sent by the system management module 2, realizing communication between each module in the device and the tested device, and providing a port for the client 1 to carry out remote maintenance, parameter setting and debugging; specifically, the interface module 3 includes 1 adaptive power network port 301, 2 USB interfaces 302, 1 optical B code output optical port 303, 13 sets of ac output ports 304, and 12 sets of switching value input/output ports 305, where 6 sets of inputs and 6 sets of outputs are provided, and the adaptive power network port is an 100/1000M adaptive power network port, preferably a 100Base-T ethernet interface;
the touch screen 100 is used for displaying and inputting operations, and the touch screen 100 is connected with the system management module 2.
As shown in fig. 1, the device of the present invention further includes a chassis with a length of 32cm, a width of 16cm, and a height of 48cm, a front panel of the chassis is provided with a touch screen 100 with 9.7 inches of LEDs, a keyboard 101 with 20 soft rubber buttons and directional key buttons, a 100Base-T ethernet interface 301, and two USB ports 302 are disposed above the liquid crystal touch screen 100, a system management module 2, an interface module 3, a standard source module 4, an input/output function module 5, and a clock synchronization module 6 are disposed in the chassis, the device is further provided with a power supply module 7, a left side panel of the chassis is provided with an electrical B code output interface and an optical B code output port 303 connected to the clock synchronization module 6, and connected to a timing electrical port or an optical port of the device under test, so as to provide a B code timing signal for the device under test. The 12 groups of the opening-in and opening-out interfaces on the left side plate of the case are connected with the opening-in and opening-out module 5. The client 1 is electrically connected with the 100Base-T Ethernet interface 301 through a communication line; the 100Base-T Ethernet interface 301 is connected to a system management module through a bus, and the system management module is connected with the interface module 3; the interface module 3 is also electrically connected with the standard source module 4, the opening-in and opening-out module 5 and the clock synchronization function module 6 respectively; a power supply module 7 is also arranged on the case and supplies power to each module through a bus;
the system management module 2 is an industrial personal computer, is a DSP and FPGA embedded window xp operating system and can be provided with matched software; the touch screen 100 is connected to the system management module 2 through a serial line. The storage capacity of the system management module 2 is 32G, and the front panel USB port 302 supports the USB port to copy local use cases into a USB flash disk and export test reports. In the test process in the off-line operation mode, the analog quantity data and the state quantity data flow to different modules respectively through the system management module 2.
The client 1 is an upper computer or a computer arranged on a station.
As shown in fig. 3, the test system (system) can be installed in the system management module 2 or on the client 1, and can implement an offline operation mode when installed on the system management module 2, and can implement a networking operation mode when installed on the client 1, thereby implementing remote testing, and simultaneously supporting communication functions for the lower 61850 protocol and the UDP103 protocol, and the system includes:
the human-computer interaction interface is used for human-computer interaction and displaying a corresponding interface through the touch screen 101; specifically, the human-computer interaction interface is used for displaying and inputting; when installed in the system management module 2, the human-computer interaction interface is composed of a touch screen 100 and a keyboard 101; when installed in the client 1, the human-computer interaction interface is composed of a display screen and an input device of the client 1;
the user management module is used for managing the user authority, setting the user authority through a human-computer interaction interface and sending the user authority to the parameter setting module; the tester sets different user authorities and manages the operable range of the user through the user management module;
the parameter setting module is used for extracting corresponding test item information from the test database according to the user permission and then displaying the test item information through the human-computer interaction interface, and extracting corresponding test cases from the test database according to the test item information and then displaying the test cases through the human-computer interaction interface; the user can modify various parameter information in the test case through the human-computer interaction interface, and the parameter setting module sends the parameter information to the automatic test module after the user modifies the various parameter information in the test case; the parameter information comprises system operation parameters and operation parameters of the device to be tested; the test case (test case) comprises an analog quantity parameter, a state quantity parameter, a time parameter, a verification quantity parameter and a measured value parameter of the tested device;
the automatic test control module is used for receiving the parameter information sent by the parameter setting module, sending the running parameters of the tested device to the system management module 2 so as to control the output of the analog quantity and the output signal of the comprehensive tester, comparing the data change analog quantity or the state quantity of the tested device sent by the system management module 2 with the verification quantity parameters in the corresponding test case to obtain a test result, generating a test report and displaying the test report through a human-computer interaction interface;
the test database adopts an SQLServer database system and is used for storing data, wherein the data comprise test cases and test item information, and the test item information comprises at least one test case associated with the test case; in the invention, each test case is an independent individual in the test database, namely the test database is divided into a plurality of partitions, and each test case is stored in one partition for the automatic test module to call.
In the invention, the system also comprises a database management module used for backing up, restoring, upgrading or deleting the data in the test database; according to the requirements of test items, the modification of a database and a test case of the previous similar test items can be introduced, and after the test is finished, the modified parameters in the corresponding test case can be backed up, and a corresponding new partition can be established and stored in the test database;
as shown in fig. 3, the automated test module includes:
the test editing module is used for displaying through a human-computer interaction interface according to the test content of the current test item and the number of test cases (test cases) and sending parameter information to the test execution module, different test cases are provided with different analog quantity parameters, state quantity parameters, time quantity data, measured value parameters and verification quantity parameters (variation analog quantity or state quantity parameters expected to be sent by the measured device in the test process) according to the test requirements, and all parameters in the test cases support the functions of adding, deleting, copying, pasting and the like, so that the test cases with the same control variable and different values can be conveniently compiled;
the test execution module is used for judging whether the tested device meets the test conditions or not after receiving the parameter information sent by the test editing module, sending the analog quantity parameters and the state quantity parameters in the test case to the system management module 2 when the test conditions are met, and sending the analog quantity parameters and the state quantity parameters to the tested device for testing through the corresponding modules after the system management module 2 receives the analog quantity parameters and the state quantity parameters;
as shown in fig. 4, the step of determining whether the device under test satisfies the test condition includes the following steps:
step S101, detecting whether a test system establishes MMS connection with a tested device, sending a three-way handshake message of TCP connection to the tested device through the test system, if the tested device responds, indicating that the MMS connection is established, executing step S102, otherwise, failing, executing step S105, sending the handshake message of TCP connection to the tested device again, when three times of continuous failures, judging whether a plurality of test cases exist, if yes, executing the test of the next test case, otherwise, ending the test;
step S102, after sending the fixed value parameter of the tested device in the current testing example to the tested device in the form of MMS message through the system control module 2, judging whether the tested device replies, when receiving the confirmation message of successful reply, namely the fixed value parameter is successfully downloaded to the tested device, and executing step S104; otherwise, prompting the downloading failure through the human-computer interaction interface, simultaneously judging whether a plurality of test cases exist, if so, returning to the step S101 to execute the test of the next test case, and if not, finishing the test.
When the network operation mode is adopted, the method further comprises the step S103 of checking whether the client 1 is normally connected with the system management module 2, the client 1 sends a reset communication unit UDP103 message for establishing connection to the system management module 2, the system management module 2 sends a reply message to the client 1 after receiving the message for establishing connection, the client 1 is normally connected with the system management module 2, if the client 1 does not receive the reply message, the step S106 is executed, when the UDP103 messages sent by the client 1 continuously for three times do not obtain the reply message of the system management module 2, the connection is unsuccessful, whether a plurality of test cases exist is judged, if yes, the step S101 is returned to execute the test of the next test case, and if not, the test is finished. In the offline operation mode, the step S104 is executed without the need of the determination in the step S103.
And step S104, converting the analog quantity parameters and the state quantity parameters into UDP103 message formats according to the analog quantity parameters and the state quantity parameters in each test case, and then sending the UDP103 message formats. Under the online operation mode, the client 1 converts the analog quantity parameters and the state quantity parameters in the measurement example into a UDP103 message format and then transmits the UDP103 message format to the system management module 2, and the system management module 2 receives the UDP103 message transmitted by the client 1 and respectively controls the output of the analog quantity of the standard source module 4 and the output of the state quantity of the input/output function module 5. In the off-line operation mode, the analog quantity parameter and the state quantity parameter are converted into a UDP103 message format by the management module 2 and then are transmitted to the standard source module 4 and the input/output function module 5, so that the analog quantity and the state quantity of the device to be tested are output by the comprehensive tester.
And the acquisition module is used for receiving the change signal of the tested device acquired by the system control module 2 in the test process. In the online operation mode, the system management module 2 collects the input signal of the device to be tested through the input and output function module 4, converts the input signal into a UDP103 message, and feeds the UDP103 message back to the client 1, and meanwhile, the client 1 directly collects the abnormal signal or the action signal of the device to be tested through the 61850 protocol. In an off-line operation mode, the acquisition module acquires an input signal of the device to be tested through the system management module 2 and the input and output function module 4, and simultaneously, an abnormal signal or an action signal of the device to be tested is directly acquired through a 61850 protocol and then displayed through a human-computer interaction interface.
And the comparison module is used for comparing the verification quantity parameters of the current test case in the test database with the variation signals generated by the tested device and collected in the test process, judging whether the test is successful or not, and sending the comparison result to the test report generation module. Specifically, in the verification quantity parameter of the test case, the time of 1000ms is set, and the "protection action" state quantity is set to be "0" → "1", and the error allowable range is "30 ms". In the test process, starting from 0s in the test execution process, the test system acquires that the state quantity of the 'protection action' of the tested device is from '0' → '1' at the moment of 1016ms, the comparison module compares the state quantity moment of the 'protection action' of the verification quantity with the moment of acquiring the state quantity of the 'protection action', the difference is 16ms, the error allowable range of the test requirement is met, and then the test execution process jumps to the next test case or the test is finished.
And the test report generation module is used for outputting each test step and test result in the test process of the test case to the human-computer interaction interface in real time. The test result comprises the comparison result of the comparison module, the whole test case execution process, including whether the test check module succeeds or not, is displayed in the test report in real time, and in the test task control module execution process, the report can also record the time of the issued analog quantity or execution quantity data and the displacement information time of the output signal of the tested device. And finally generating a corresponding conclusion report after the execution of the test case is finished. And the test result is intuitively reflected.
As shown in fig. 5, the system, when performing the test, includes the following steps:
step S201, the automatic test module downloads the fixed value parameters of the tested device to the tested device through the system control module 2 through the 61850 protocol according to the test case corresponding to the test item selected by the user, and simultaneously records the downloading condition of the fixed value parameters in real time in the human-computer interaction interface, such as: the 'fixed value downloading success' or 'fixed value downloading failure' can be realized, and the next step can be carried out only after the downloading is successful.
Step S202, a UDP103 packet is established, where different Application Service Data Units (ASDUs) in the UDP103 packet respectively correspond to the analog parameter, the state parameter, and the standard timing parameter, and specifically, each parameter in the test case is converted into UDP103 packet data, such as: in the message, ASDU50 represents analog quantity data, ASDU1/2 represents state quantity data, and ASDU6 represents standard timing data.
In step S202, when the system is in the offline operation mode, the system management module 2 issues analog quantity data, state quantity data, and standard timing data in the test case issued by the automatic test module to the standard source module 4, the open-close module 5, and the clock synchronization module 6 in real time through the interface module 3 in the form of UDP103 messages;
in step S202, in the online operation mode, the analog data, the state quantity data, and the standard timing data are sent from the client 1 to the system management module 2 in the form of UDP103 messages through the network and the network debug interface 301 of the device. The system management module 2 reads the feature codes and the message bodies in the data frame messages, distinguishes analog quantity data, state quantity data and standard timing data according to the format in the real-time message bodies, and sends the data to the standard source module 4, the input and output module 5 and the clock synchronization module 6 in real time through the interface module 3.
Such as: the system management module 2 reads the feature codes in the messages, identifies the messages as analog quantity data, analyzes the amplitude and the angle of the analog quantity data, and sends the analog quantity data to the standard source function module 4 through the interface module 3 in real time, and the standard source module 4 receives an analog quantity output instruction sent by the system management module 2 and then outputs the analog quantity output instruction to a tested device through the analog quantity output interface. As long as the analog quantity parameters in the execution test case are changed, the analog quantity data in the UDP103 message sent to the standard source function module 4 by the corresponding system management module 2 is also changed in real time, and the tester also outputs the corresponding analog quantity to the device under test in real time. Similarly, the system management module 2 reads the identification message as the state quantity data, if the state is "1", the system management module sends the state quantity data to the open-in and open-out module 5 through the interface module 3 in real time, and the open-in and open-out module 5 receives the command, and controls the relay connected with one or more groups of open-out contacts to be closed, so that the corresponding open-out contacts are in a conducting state to control the open-in of the tested power distribution automation device, and the logical open-in condition of the tested device is verified in the testing process. In the test case, the state quantity data changes with different state changes, so as long as the state quantity data parameters in the test case are changed, the state quantity data of the UDP103 message sent by the corresponding system management module 2 to the input/output module 5 also changes in real time, and the tester also controls the corresponding contact to be turned on or turned off in real time; similarly, the system management module 2 reads the identification message as time synchronization data, and the system management module 2 controls the clock synchronization module 6 to output a time message according to the IRIG-B code element definition, and sends the time message to the optical B code timing interface of the relay protection device to be tested in an optical signal transmission mode. And sending the data to the B code timing interface of the tested relay protection device in a high and low level transmission mode.
Step S203, whether the closed loop analysis test result is consistent with the expected result or not. Such as: the system management module 2 reads an open-close module 5 to collect an open-close contact level signal of a 'protection action' of the tested distribution automation device, converts the open-close contact level signal into a state quantity signal according to the open-close contact level signal in an off-line operation mode, compares the state quantity signal with a value of the 'protection action' state in a verification quantity parameter in a test case, and uses the state quantity signal as a basis for verifying a test result; in the online operation mode, the system management module 2 converts the contact state of the 'protection action' of the device to be tested into state quantity data and sends the state quantity data to the client 1 in the form of a UDP103 message, the client 1 reads the feature code and the message body in the data frame message, and compares the 'protection action' state of the device to be tested with the value of the 'protection action' state in the verification quantity parameter in the test case, and the value is used as the basis of the verification test result. Meanwhile, the test system and the tested device carry out normal communication of 61850 protocol, and when abnormal signals such as PT disconnection, CT disconnection and the like or action signals such as overcurrent protection action, zero sequence overcurrent protection action and the like are generated in the test process of the tested device, the abnormal signals are uploaded to the test system in real time and can be printed in a test report in real time. The test system also compares the verification quantity parameters in the test case of the abnormal signals or the action signals sent by the tested device, and can judge whether the test is successful or not and print the test report.
In the invention, an online operation mode is connected with a client 1 through a self-adaptive power network port of an interface module 3 by a network cable, the client 1 is also provided with a matched software function which is consistent with the function of the offline operation mode, the data of the two databases are distinguished to be in different places, the offline operation mode is arranged in a system management module of an integrated device, the online operation mode is arranged in a server provided with client software, the formats of the databases are consistent, and the databases can be mutually restored and backed up even if the storage places of the two modes are different.
The invention has the following advantages: 1. the device is small in size, flexible to use, convenient to carry, small in occupied space and capable of being conveniently carried to each experimental site. 2. The operation is simple, the operation is easy to operate, the external PC client uses matched software, and remote maintenance, parameter setting and debugging can be carried out on the PC end through the remote maintenance software. 3. The detection time of a single terminal is less than 5 minutes, and the test report is automatically generated, so that the time for compiling the report by a user is saved. 4. The testing device has a perfect testing scheme, can be flexible and changeable, and meets the detection requirements of various domestic power distribution terminals.
Claims (9)
1. The utility model provides a comprehensive test appearance for distribution automation terminal equipment test which characterized in that: including synthesizing device and test system, synthesize the device and include:
the system management module is used for controlling each module of the comprehensive device and transmitting and collecting data, receiving the operation parameters of the tested device sent by the system and sending the collected data to the test system, wherein the collected data comprise change signals of the tested device, the change signals comprise opening signals, abnormal signals or action signals of the tested device, and the system management module is connected and communicated with the client;
the standard source module is connected with the system management module and used for outputting a corresponding alternating current power supply andor alternating current voltage according to the operation parameters of the device to be tested, which are sent by the system management module;
the system management module is used for acquiring an input signal, outputting the input signal, receiving a first instruction sent by the system management module through the interface module, outputting a corresponding output signal according to the first instruction, acquiring the input signal of the tested device and sending the acquired input signal to the system management module;
the clock synchronization module is used for timing the device and outputting a standard timing signal to the tested device in an electric B code mode;
the interface module is used for connecting and communicating with the tested device and the client, sending standard timing signals, acquisition of opening signals and output of opening signals to the tested device, forwarding data sent by the system management module, realizing communication between each module in the device and the tested device, and providing ports for the client to carry out remote maintenance, parameter setting and debugging;
the touch screen is used for displaying and inputting operation and is connected with the system management module;
the test system is installed in a system management module or a client to realize an offline or online operation mode, and includes:
the human-computer interaction interface is used for human-computer interaction;
the user management module is used for managing the user authority, setting the user authority through a human-computer interaction interface and sending the user authority to the parameter setting module;
the parameter setting module is used for extracting corresponding test item information from the test database according to the user permission, displaying the test item information through the human-computer interaction interface, extracting corresponding test cases from the test database according to the test item information, displaying the test cases through the human-computer interaction interface and sending parameter setting to the automatic test control module;
the automatic test control module is used for receiving the parameter information sent by the parameter setting module, sending the running parameters of the tested device to the system management module so as to control the output of the analog quantity and the output signal of the comprehensive tester, comparing the data change analog quantity or the state quantity of the tested device sent by the system management module with the corresponding verification quantity parameters in the test case to obtain a test result, generating a test report and displaying the test report through a human-computer interaction interface;
and the test database is used for storing data, including test cases and test item information.
2. The integrated tester for testing of distribution automation terminal devices of claim 1, characterized in that: the test system also comprises a database management module used for backing up, restoring, upgrading or deleting the data in the test database.
3. The integrated tester for testing of distribution automation terminal devices of claim 1, characterized in that: the automated testing module comprises:
the test editing module is used for displaying through a human-computer interaction interface according to the test content of the current test item and the number of test cases and sending parameter information to the test execution module;
the test execution module is used for judging whether the tested device meets the test condition or not after receiving the parameter information sent by the parameter setting module, sending the analog quantity parameter and the state quantity parameter in the test case to the system management module when the test condition is met, and sending the analog quantity parameter and the state quantity parameter to the tested device for testing through the corresponding modules after the system management module receives the analog quantity parameter and the state quantity parameter;
the acquisition module is used for receiving the change signal of the tested device acquired by the system control module in the test process;
the comparison module is used for comparing the verification quantity parameters of the current test case in the test database with the variation signals generated by the tested device and collected in the test process, and sending the comparison result to the test report generation module;
and the test report generation module is used for outputting each test step and test result in the test process of the test case to the human-computer interaction interface in real time.
4. The integrated tester for testing of distribution automation terminal devices of claim 3, characterized in that: the step of judging whether the tested device meets the test conditions comprises the following steps:
step S101, detecting whether a test system establishes MMS connection with a tested device, sending a three-way handshake message of TCP connection to the tested device through the test system, if the tested device responds, indicating that the MMS connection is established, executing step S102, otherwise, failing, executing step S105, sending the handshake message of TCP connection to the tested device again, when three times of continuous failures, judging whether a plurality of test cases exist, if yes, executing the test of the next test case, otherwise, ending the test;
step S102, after sending the fixed value parameter of the tested device in the current test example to the tested device in the form of MMS message through the system control module, judging whether the tested device replies, when receiving the confirmation message of successful reply, namely the fixed value parameter is successfully downloaded to the tested device, and executing step S104; otherwise, prompting the downloading failure through a human-computer interaction interface, simultaneously judging whether a plurality of test cases exist, if so, returning to the step S101 to execute the test of the next test case, otherwise, finishing the test;
and step S104, converting the analog quantity parameters and the state quantity parameters into UDP103 message formats according to the analog quantity parameters and the state quantity parameters in each test case, and then sending the UDP103 message formats.
5. The integrated tester for testing of distribution automation terminal devices of claim 4, characterized in that: when the network operation mode is adopted, the method further comprises a step S103 between the step S102 and the step S104, whether the client is normally connected with the system management module is checked, the client sends a reset communication unit UDP103 message for establishing connection to the system management module, the system management module sends a reply message to the client 1 after receiving the message for establishing connection, the client is normally connected with the system management module, if the client does not receive the reply message, the step S106 is executed, when the UDP103 messages sent by the client for three times do not obtain the reply message of the system management module 2, the connection is unsuccessful, whether a plurality of test cases exist is judged, if yes, the step S101 is returned to execute the test of the next test case, otherwise, the operation is finished.
6. The integrated tester for testing of distribution automation terminal devices of claim 5, characterized in that: the database adopts SQLServer database.
7. The integrated tester for testing of distribution automation terminal devices of claim 3, characterized in that: the interface module comprises a self-adaptive electric network, a USB interface, an optical B code output optical port, an alternating current output port and a switching value input/output port.
8. The integrated tester for testing of distribution automation terminal devices of claim 1, characterized in that: the integrated device also comprises a case, wherein the system management module, the standard source module, the input/output module, the clock synchronization module, the interface module and the touch screen are arranged in the case.
9. The integrated tester for testing distribution automation terminal equipment according to any one of claims 1 to 8, characterized in that: the system management module is an industrial personal computer.
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