CN106405294B - Portable power distribution product transmission calibrator and implementation test method thereof - Google Patents
Portable power distribution product transmission calibrator and implementation test method thereof Download PDFInfo
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- CN106405294B CN106405294B CN201610885718.2A CN201610885718A CN106405294B CN 106405294 B CN106405294 B CN 106405294B CN 201610885718 A CN201610885718 A CN 201610885718A CN 106405294 B CN106405294 B CN 106405294B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
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- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
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Abstract
The invention discloses a portable power distribution product transmission calibrator, which comprises an upper layer functional module and a bottom layer functional module connected with external inspected equipment; the upper functional module comprises an upper computer core control module, external input and output equipment, a display device and an external interface module which are respectively connected with the upper computer core control module; the bottom layer functional module comprises an external test interface, a functional switching module connected with the external test interface, an action voltage current signal acquisition module, a position signal acquisition module and a functional switching module which are respectively connected with the functional switching module. The invention also provides a verification method based on the tester, which comprises a power distribution terminal verification step, a power distribution switch verification step and a complete equipment transmission verification step. The invention realizes the verification of the functions and the performances of the power distribution terminal equipment through the standardized test interface and the simple wiring operation.
Description
Technical Field
The invention relates to the technical field of testing of power distribution equipment, in particular to a portable power distribution product transmission calibrator and a testing method implemented by the portable power distribution product transmission calibrator.
Background
In recent years, along with the construction of power distribution network test points, the power distribution terminal is used as a key component part of a power distribution automation system, the application quantity is increased, remote signaling, telemetry, remote control, communication and protection function test are required to be carried out on the power distribution terminal in the production process and before and after the power distribution terminal is put into use, and various equipment and various software are often required to be combined to meet the test requirements. The existing test means also stay at a relatively low level and have no reliable, efficient and professional test method. In particular, no effective instrument is available for the primary and secondary complete equipment of the power distribution network to carry out transmission verification, fault discrimination and fault diagnosis.
Because of various power distribution terminal products, various hardware interfaces and different functions, the following testing method is mainly adopted in the existing state.
The utility power is used as a power supply, the access current is a current generator, and the access analog switch is used for testing.
And a relay protection tester is used for supplying current and voltage, and the relay protection tester is connected with an analog switch for testing.
For the power distribution equipment check, only the power distribution terminal is tested and checked independently, and the power distribution switch is tested and checked independently.
And no professional verification equipment is used for carrying out transmission verification on the power distribution terminal, the power distribution switch and the main station.
The poor power distribution equipment verification method adopts commercial power as a power supply source, and the access current adopts a current generator and is accessed to an analog switch for testing; the output voltage and current of the test technical scheme cannot be accurately controlled.
The relay protection tester is generally adopted for supplying current and voltage, and the relay protection tester is connected with the analog switch for testing. The voltage and current accurate control addition can be carried out, but the relay protection tester is high in price, and when the power distribution terminal protection functionality test is carried out, an analog switch device is additionally required to be provided, the wiring and the test operation are complex, the terminal function test item record and storage function is not provided, and the analog fault wave recording function is not carried out.
The existing checking equipment only performs test and check on the distribution terminal alone, performs test and check on the distribution switch alone, and does not perform a fault-simulating wave recording function on the action voltage and current of the distribution terminal or the distribution switch.
The prior complete equipment transmission check between the power distribution terminal and the switch is not performed, and the transmission among the power distribution terminal, the power distribution switch and the master station is not checked and tested.
The existing test uses multiple types of equipment to carry out field debugging, such as relay protection testers, notebook computers, analog switches and analog breaker devices, has the disadvantages of multiple equipment, excessive weight, overlarge volume and other unfavorable carrying factors, and can carry out relevant detection by using multiple types of different software together according to different test requirements. Great inconvenience is brought to staff.
Disclosure of Invention
Based on the defects of the prior art, the portable power distribution product transmission calibrator provided by the invention can automatically and selectively calibrate the power distribution terminal, the power distribution switch, one of the complete equipment and the transmission between the complete equipment and the master station, and assist operation and maintenance personnel to finish the inspection, the transmission and the daily operation and maintenance work of the power distribution terminal equipment.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
the portable power distribution product transmission calibrator comprises an upper layer functional module and a bottom layer functional module connected with external inspected equipment;
the upper layer functional module comprises an upper computer core control module, external input and output equipment, a display device and an external interface module, wherein the external input and output equipment, the display device and the external interface module are respectively connected with the upper computer core control module;
the bottom layer functional module comprises an external test interface which can be connected with external detected equipment, a functional switching module which is connected with the external test interface, and an action voltage current signal acquisition module and a position signal acquisition module which are respectively connected with the functional switching module, wherein the action voltage current signal acquisition module, the position signal acquisition module and the functional switching module are also connected with a bottom layer core control module, the bottom layer core control module is also connected with a voltage current output module, the voltage current output module is connected with the external test interface, and the bottom layer core control module is connected with an upper computer core control module.
The external interface module comprises one or more of an external serial port, an external network port and an external USB port.
The function switching module comprises one or more of a master station verification module, a terminal verification module, a body logic verification module and a complete equipment verification module.
The voltage and current output module comprises a voltage and current acquisition module, a DDS module and a voltage and current amplification module connected with the DDS module, wherein the input end of the DDS module is connected with the bottom layer core control module, and the output end of the voltage and current amplification module is connected with an external test interface; and the input end of the voltage and current acquisition module is connected with the external test interface, and the output end of the voltage and current acquisition module is connected with the bottom layer core control module.
The external input device comprises a mouse and a keyboard; the external output device includes an LCD display screen.
In another aspect, the present invention also provides a testing method implemented by the portable power distribution product transmission tester, the method comprising:
and checking a power distribution terminal: the method comprises the steps that brake opening, closing and energy storage action signals of a tested power distribution terminal are input to a terminal verification module, the terminal verification module carries out switching value deflection based on the brake opening, closing and energy storage action signals of the tested power distribution terminal, the deflected switching value signals are fed back to the tested power distribution terminal, and an upper layer functional module carries out total calling on the tested power distribution terminal through serial ports or network port communication to verify whether remote signaling states acquired by the tested power distribution terminal are correct; inputting appointed voltage and current to a tested power distribution terminal by a calibrator, and verifying voltage and current acquisition precision values of the tested power distribution terminal;
and (3) checking a distribution switch: executing opening, closing and energy storage action signals on the switch body through the body logic checking module, recording remote control action voltage data and current data of the switch execution through the action voltage and current signal acquisition module, and checking whether the remote signaling state of the switch body is correctly switched through whether the remote signaling state of the switch position acquired through the position signal acquisition module is correct or not;
and (3) complete equipment transmission checking: the power distribution terminal equipment is connected to a tested power distribution switch through a complete equipment checking module by switching-off, switching-on and energy storage action signals, the position energy storage signals of the tested power distribution switch are fed back to the power distribution terminal, meanwhile, an action voltage current signal acquisition module and a position signal acquisition module acquire action signal voltage current and position signals of the switch respectively, and an upper layer functional module is used for comparing the acquired telemetering and remote signaling state information with the values of the position signals and voltage current output acquired by a bottom layer core control module to check whether telemetering and remote signaling transmission of the complete equipment is normal.
When the core detection criteria of the verification item are not acceptable, the method further comprises the following diagnostic steps: establishing an expert database, and collecting and configuring all points possibly suffering from problems in the device; combing all the reasons possibly causing the unqualified verification of the test item, and carrying out next analysis on all the reasons by the system until a diagnosis result is obtained after the last layer; setting criteria and rules corresponding to faults, and setting check standards for configured problem points; and comprehensively analyzing all acquired information data to give a judgment result.
Further, the inspection method further comprises: when the master station generates alarm information, the alarm information is acquired through network communication with the master station, and the information is compared with locally stored uploaded information through reporting time, so that whether normal terminal reporting or false reporting of the master station is diagnosed; all test items are used as independent test tasks, so that a plurality of test tasks can be freely combined to form a new test template, and the test template supports storage and solidification into a local file.
Further, the inspection method further comprises: in the automatic test of the switch and the complete equipment, the related attributes of the mechanical characteristics of the body switch are presented by using a graph method comprising switching-on/switching-off voltage current recording and fracture signal recording.
The beneficial effects of the invention are as follows:
through standardized test interface, simple wiring operation realizes the verification to distribution terminal equipment function, performance to and the automatic test of once switching function, consumption. Meanwhile, the equipment provides rich communication interface test functions, supports the test of a communication loop and a communication information interface of the terminal equipment, and realizes demarcation of power distribution terminals, primary switches and communication faults.
The power distribution terminal, the power distribution switch, one of the complete equipment and the transmission between the complete equipment and the main station are verified, operation and maintenance personnel can be effectively assisted to complete the inspection, the transmission and the daily operation and maintenance work of the power distribution terminal equipment, and the product is convenient to carry and move.
The invention integrates the analog switch functional module into a testing device, has simple wiring and is portable and easy to carry. And a plurality of groups of power distribution terminal test items can be configured, and automatic test can be realized in part. The external interfaces are unified, and testing of various types of power distribution terminal products can be achieved. And the test report is automatically produced, so that the inquiry is convenient.
Drawings
FIG. 1 is a block diagram of an embodiment of the present invention;
FIG. 2 is a flow chart of a preferred embodiment of a verification method implemented by the portable power distribution product transmission verifier of the present invention;
FIG. 3 is a schematic diagram of an embodiment of a verification method implemented by a portable power distribution product transmission verifier to implement verification of a power distribution terminal in accordance with the present invention;
FIG. 4 is a schematic diagram of an embodiment of a verification method implemented by a portable power distribution product transmission verifier to implement power distribution switch verification in accordance with the present invention;
FIG. 5 is a schematic diagram of a method of implementing a plant drive check in accordance with one embodiment of the present invention implemented in a portable power distribution product drive check meter;
FIG. 6 is an embodiment of intelligent diagnosis of faults in a packaged product by a verification method implemented by a portable power distribution product transmission verifier in accordance with the present invention;
fig. 7 is a flow chart of another preferred embodiment of the verification method implemented by the portable power distribution product transmission verifier of the present invention.
Detailed Description
The conception, specific structure, and technical effects produced by the present invention will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, features, and effects of the present invention. It is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and that other embodiments obtained by those skilled in the art without inventive effort are within the scope of the present invention based on the embodiments of the present invention.
Fig. 1 shows a preferred embodiment of the portable power distribution product transmission verifier according to the present invention, which comprises an upper functional module and a lower functional module connected to an external device under test.
The upper layer functional module comprises an upper computer core control module, external input and output equipment, a display device and an external interface module which are respectively connected with the upper computer core control module. The upper computer core control module of the embodiment is mainly an industrial control main board and mainly realizes the functions of man-machine interaction, external communication, test report generation, test data storage and the like.
The external input devices of this embodiment include, but are not limited to, a mouse and a keyboard; external output devices include, but are not limited to, LCD displays.
The external interface module comprises one or more of an external serial port, an external network port and an external USB port, and is communicated with external input and output equipment.
The bottom layer functional module of this embodiment includes external test interface, the function switching module of being connected with external test interface that can be connected with outside by the check out test set, action voltage electric current signal acquisition module, position signal acquisition module and the function switching module of being connected with the function switching module respectively, action voltage electric current signal acquisition module, position signal acquisition module and function switching module still are connected with bottom layer core control module, bottom layer core control module still is connected with voltage electric current output module, voltage electric current output module connects external test interface, bottom layer core control module connects host computer core control module.
The bottom layer core control module is a 32-bit dual-core CPU circuit board for running an embedded control program and is mainly used for carrying out information interaction with the upper computer core control module and controlling the function switching module, the DDS module and the like in the lower module to work in a coordinated manner; and receives information of the action voltage and current signal acquisition module, the position signal acquisition module and the like, so as to realize the optimal work of the system. Analyzing preset test item parameters, controlling the output of each lower module, collecting various state values and return amounts, analyzing, sorting, calculating and judging test results, and completing the test.
When the switch body performs automatic opening and closing operation, a certain voltage and current are needed to realize, the action voltage and current signal acquisition module of the embodiment is a real-time value of the voltage and current consumed by the sampling body during the automatic opening and closing operation, a sampling result is a regularly stepped discrete point with a specific interval, an envelope line connected by the discrete points is a curve, and the result after being processed and analyzed by a specific algorithm can be used for qualitative judgment and also can be used for quantitative analysis.
The position signal acquisition module is used for judging the actual position of the tested product from the acquired electric signals, the hardware is composed of a switching value acquisition circuit, the position signals are converted into high potential or low potential, and the sampling is completed by the processor after the position signals are isolated by adopting an optocoupler or magnetic materials and the like.
The voltage and current output module generates various small signals for verification through a direct digital synthesis technology, and then outputs various voltage and current waveforms with controllable amplitude, frequency and phase through power amplification so as to realize verification of power distribution equipment under various situations, such as steady state, transient state, surge, harmonic wave, distortion and the like. The main hardware comprises an embedded processor, a DA converter and a voltage and current output logic control circuit, wherein the DA converter and the voltage and current output logic control circuit are connected with the embedded processor, and the power amplification circuit is connected with the DA converter after isolation and filtering.
The voltage and current output module comprises a voltage and current acquisition module, a DDS module and a voltage and current amplification module connected with the DDS module, wherein the input end of the DDS module is connected with the bottom layer core control module, and the output end of the voltage and current amplification module is connected with the external test interface; the input end of the voltage and current acquisition module is connected with the external test interface, and the output end of the voltage and current acquisition module is connected with the bottom layer core control module.
The function switching module is mainly used for realizing wiring operation of different working modes, such as switching work of four modes including power distribution terminal verification, power distribution switch verification, complete equipment transmission verification, transmission verification between a power distribution main station and the power distribution terminal and the power distribution switch, and main hardware components comprise an embedded processor, an isolation circuit, an intermediate relay, an electromagnetic valve and the like. The function switching module comprises one or more of a master station verification module, a terminal verification module, an ontology logic verification module and a complete equipment verification module.
The master station verification module is used for carrying out information interaction with the master station and carrying out dynamic simulation verification on distribution lines, and comprises communication protocol verification, communication content verification and line system verification.
The hardware of the terminal checking module comprises an analog switch and a related public circuit, and is mainly used for performing three-remote checking on the tested terminal.
Remote signaling checking: the remote signaling information mainly comprises position information, such as opening, closing, energy storage and the like of the switch body, and state information, such as acquisition and verification of alarm states, running states and the like. The verification method mainly comprises remote signaling correctness, SOE correctness, remote signaling mutation, remote signaling avalanche, remote signaling jitter elimination, remote signaling duration time and the like.
Telemetry verification: the method is mainly used for checking various analog quantities such as voltage, current, power factor, frequency, energy consumption and the like.
Remote control checking: the method is mainly used for checking the opening control function, the opening control power, the opening action service life, the opening change interval, the opening duration time and the like.
The body logic checking module hardware comprises an analog terminal and relevant public circuits, and is mainly used for performing three-remote checking on the tested switch body.
Remote signaling checking: the indication correctness, synchronism, stability, interface capacity and the like of the position information, the state information and the like are verified.
Telemetry verification: the method mainly comprises the step of checking various analog quantities such as linearity, response speed, energy consumption and the like of a voltage sensor, a current sensor and the like.
Remote control/manual control check: mainly checking the operation correctness, synchronism, switching-on and switching-off time and the like.
The complete equipment test mainly comprises a voltage and current output module, an action voltage and current signal acquisition module and related public circuits. The method is mainly used for checking the functions and performances of the automation interface part.
And (3) functional verification: mainly the correctness of three tele.
And (3) performance verification: the diagnosis method mainly comprises the steps of collecting process voltages, currents, duration and the like of automatic interfaces, mainly switching on, switching off, energy storage and the like, recording waveforms, and quantitatively analyzing each element in the process to achieve the purpose of diagnosis.
Referring to fig. 2, a preferred embodiment of a testing method implemented by the portable power distribution product transmission tester of the present invention comprises the steps of:
terminal verification, namely, performing three-remote verification on a tested terminal, wherein the three-remote verification is as follows: (1) The remote signaling verification, wherein the remote signaling information mainly comprises position information (such as opening, closing, energy storage and the like of a switch body) and state information (such as alarm state, running state and the like) acquisition verification, and the verification mode mainly comprises remote signaling correctness, SOE correctness, remote signaling mutation, remote signaling avalanche, remote signaling jitter elimination, remote signaling duration and the like; (2) The remote measurement verification is mainly performed on various analog quantities such as voltage, current, power factor, frequency, energy consumption and the like; (3) The remote control verification mainly comprises verification of a switching-out control function, switching-out control power, switching-out action life, switching-out change intervals, switching-out duration time and the like. Fig. 3 is a schematic diagram showing that the verification of the power distribution terminal is implemented according to the present embodiment, the opening, closing and energy storage action signals of the tested power distribution terminal are input to the terminal verification module, the terminal verification module performs corresponding switching value displacement, the displaced switching value signals are fed back to the tested power distribution terminal, the upper layer functional module performs total calling on the terminal through serial port or network port communication, and whether the remote signaling state collected by the terminal equipment is correct is verified. And the calibrator inputs the appointed voltage and current to the tested power distribution terminal, and the voltage and current acquisition precision value of the terminal equipment is calibrated.
The power distribution switch checking step, the power distribution switch checking is mainly used for performing three-remote checking on the tested switch body, wherein the three-remote checking is as follows: (1) Remote signaling verification, wherein the remote signaling information comprises position information, state information and the like, and the indication correctness, the synchronism, the stability, the interface capacity and the like of the remote signaling information are verified; (2) The remote measurement verification mainly comprises verification of various analog quantities such as linearity, response speed, energy consumption and the like of a voltage sensor, a current sensor and the like; (3) The remote control/manual control verification mainly comprises verification of action correctness, synchronism, switching-on and switching-off time and the like. Fig. 4 is a schematic diagram showing a logic verification of a power distribution switch body according to the present embodiment, where the logic verification module performs opening, closing and energy storage action signals on the switch body, records remote control action voltage data and current data of the switch by the action voltage and current signal acquisition module, and verifies whether the remote signaling state of the switch body is switched correctly by determining whether the remote signaling state of the switch position acquired by the position signal acquisition module is correct.
And a complete equipment transmission checking step, wherein the complete equipment transmission checking of the functions and the performances of the automatic interface part comprises the following steps: (1) Functional verification, wherein the functional verification mainly comprises the step of verifying the correctness of three remote devices; (2) And the performance verification is mainly realized by collecting process voltage, current, duration and the like of an automatic interface (mainly including switching on, switching off, energy storage and the like), recording waveforms, and quantitatively analyzing each element in the process so as to achieve the purpose of diagnosis. Fig. 5 is a schematic diagram showing that verification of a power distribution complete equipment is achieved according to the embodiment, a tested power distribution terminal and a tested power distribution switch are connected through a complete equipment verification module, voltage and current output by a voltage and current output module are output to the tested power distribution terminal, a power distribution terminal device opening, closing and energy storage action signal is connected to the tested power distribution switch through the complete equipment verification module, and a position energy storage signal of the tested power distribution switch is fed back to the power distribution terminal. Meanwhile, the action voltage and current signal acquisition module and the position signal acquisition module acquire action signal voltage and current and position signals of the switch respectively. The upper layer functional module compares the telemetry and remote signaling state information acquired by the test software power distribution terminal equipment with the position signal and the voltage and current output value acquired by the bottom layer core control module, and checks whether telemetry and remote signaling transmission of the complete equipment are normal or not.
When the core detection criteria of the test item in the above embodiment are not acceptable, the above embodiment further includes the following diagnostic steps: establishing an expert database, and collecting and configuring all points possibly having problems in the device, such as voltage output, poor contact at an interface, communication interruption and the like; combing all the reasons possibly causing the unqualified verification of the test item, and carrying out next analysis on all the reasons by the system until a diagnosis result is obtained after the last layer; setting criteria and rules corresponding to faults, and setting calibration standards for configured problem points, wherein if the analog voltage standard is unqualified, the calibration standards can be set to sample output port voltage, voltage output waveform and feedback message analysis of a calibrator, so that the problems caused by inaccurate output voltage of the instrument or poor contact of the output port can be obtained through sampling, comparing and analyzing a plurality of parameters; and comprehensively analyzing all acquired information data to give a judgment result. In order to make the problem diagnosis more accurate, the more detailed the test quantity requirement is, the better the related parameters are required. All kinds of parameters are obtained through summarizing and analyzing in long-term work, so that the upper computer software is required to be more flexibly matched; the method has the advantages of high expansibility, and can gradually perfect the configuration along with experience and technology improvement, so that the diagnosis step is more accurate.
Further, the inspection method further comprises: when the master station generates alarm information, the alarm information is acquired through network communication with the master station, and the information is compared with locally stored uploaded information through reporting time, so that whether normal terminal reporting or false reporting of the master station is diagnosed; all test items are used as independent test tasks, so that a plurality of test tasks can be freely combined to form a new test template, and the test template supports storage and solidification into a local file.
Further, the inspection method further comprises: in the automatic test of the switch and the complete equipment, the related attributes of the mechanical characteristics of the body switch are presented by using a graph method comprising switching-on/switching-off voltage current recording and fracture signal recording.
Further, the transmission check among the power distribution terminal, the power distribution switch and the master station can be realized by the following modes: as shown in fig. 6, the tested power distribution terminal is connected with the tested power distribution switch through the master station checking module, the voltage and current output by the voltage and current output module are output to the tested power distribution terminal, the power distribution terminal equipment is connected to the tested power distribution switch through the master station checking module by switching-off, switching-on and energy storage action signals, and the position energy storage signals of the tested power distribution switch are fed back to the power distribution terminal.
Meanwhile, the action voltage and current signal acquisition module and the position signal acquisition module acquire action signal voltage and current and position signals of the switch respectively.
The master station system is communicated with the power distribution terminal equipment through a communication platform, and is compared with the position signals acquired by the bottom layer core control module and the values of voltage and current output to check whether transmission among the power distribution terminal, the power distribution switch and the master station is normal.
All modules are integrated into the chassis, the total volume is not more than W5mm multiplied by H4mm multiplied by D5mm, the total weight is not more than 35Kg, the testing efficiency is improved, and the portable test device is convenient to carry.
Another preferred embodiment of the inspection method implemented by the portable power distribution product transmission verifier of the present invention is shown in fig. 7, and includes the steps of:
the method comprises the steps of automatically tracking and diagnosing the alarm information of the master station, aiming at the time and effort consumption phenomenon when a local side performs troubleshooting on the alarm information of the power distribution network master station, automatically reading the alarm information of the master station through a calibrator and automatically obtaining a fault generating place, when the master station generates the alarm information, acquiring the alarm information through network communication with the master station by the calibrator, and comparing the information with locally stored uploaded information through reporting time, so that whether the terminal reporting is normal or false reporting of the master station can be effectively diagnosed;
information interaction with the master station and dynamic simulation verification of the distribution line are carried out by using a calibrator;
the test items are configured, the system takes all the test items as independent test tasks, a plurality of test tasks can be freely combined to form a new test template, the test template is supported to be stored and solidified in a local file, and related template files can be conveniently and directly called during use;
customizing test parameters, storing the test standard parameters as a default template, manually editing and modifying parameters by a user, storing and curing the parameters into a new test standard template file to a local machine, and conveniently and directly calling related template files in the subsequent use;
the test report is informatized, the report file automatically establishes a folder for storage according to the month of the test year, automatically establishes index data for storage in a local database, and supports a user to search according to the type of the product, the time period, the information of a tester and the like;
in the automatic test method for displaying the test result graph, namely, visualizing deviation, and the primary switch and complete equipment, the related attribute of the mechanical characteristic of the primary body switch can be more accurately and intuitively seen by using methods such as switching-on and switching-off voltage current recording, fracture signal recording and the like.
Further, in the above embodiment, information interaction with the master station and dynamic simulation verification of the distribution line are performed by using the verification instrument, where the verification includes:
and checking a communication protocol, wherein the communication protocol checking mainly checks whether the communication protocol between the master station and the terminal meets the standard, for example: whether 11 or 14, link address a few bytes, etc.;
communication content verification, wherein the communication content verification mainly comprises the steps of verifying consistency and timeliness of information obtained by a master station and local information of complete equipment;
and the line system verification is that after a plurality of sets of distribution equipment form a distribution line, the whole function is verified, namely, whether accurate positioning, quick isolation, power switching and the like of a fault interval can be realized or not, and under the condition, a plurality of check meters are required to work cooperatively.
It should be noted that the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited to the foregoing embodiment, and should be construed as falling within the scope of the present invention as long as the technical effects of the present invention are achieved by the same means.
Claims (7)
1. A checking method realized by a portable power distribution product transmission checking instrument is characterized in that,
the portable power distribution product transmission calibrator includes:
the upper layer functional module and the bottom layer functional module are connected with external inspected equipment; the upper layer functional module comprises an upper computer core control module, external input equipment, external output equipment, a display device and an external interface module, wherein the external input equipment and the external output equipment are respectively connected with the upper computer core control module;
the bottom layer functional module comprises an external test interface which can be connected with external tested equipment, a functional switching module which is connected with the external test interface, an action voltage current signal acquisition module and a position signal acquisition module which are respectively connected with the functional switching module, wherein the action voltage current signal acquisition module, the position signal acquisition module and the functional switching module are also connected with a bottom layer core control module, the bottom layer core control module is also connected with a voltage current output module, the voltage current output module is connected with the external test interface, the bottom layer core control module is connected with an upper computer core control module, and the functional switching module comprises a master station verification module, a terminal verification module, a body logic verification module and a complete equipment verification module;
the method comprises the following steps:
and checking a power distribution terminal: the method comprises the steps that brake opening, closing and energy storage action signals of a tested power distribution terminal are input to a terminal verification module, the terminal verification module carries out switching value deflection based on the brake opening, closing and energy storage action signals of the tested power distribution terminal, the deflected switching value signals are fed back to the tested power distribution terminal, and an upper layer functional module carries out total calling on the tested power distribution terminal through serial ports or network port communication to verify whether remote signaling states acquired by the tested power distribution terminal are correct; inputting appointed voltage and current to a tested power distribution terminal by a calibrator, and verifying voltage and current acquisition precision values of the tested power distribution terminal;
and (3) checking a distribution switch: executing opening, closing and energy storage action signals on the switch body through the body logic checking module, recording remote control action voltage data and current data of the switch execution through the action voltage and current signal acquisition module, and checking whether the remote signaling state of the switch body is correctly switched through whether the remote signaling state of the switch position acquired through the position signal acquisition module is correct or not;
and (3) complete equipment transmission checking: the method comprises the steps that switching-off, switching-on and energy storage action signals of power distribution terminal equipment are connected to a tested power distribution switch through a complete equipment checking module, position energy storage signals of the tested power distribution switch are fed back to the power distribution terminal, meanwhile, an action voltage current signal acquisition module and a position signal acquisition module acquire action signal voltage current and position signals of the switch respectively, and an upper layer functional module is used for checking whether telemetry and remote signaling transmission of the complete equipment are normal or not through comparison between acquired telemetry and remote signaling state information and values of position signals and voltage current output acquired by a bottom layer core control module;
the tested power distribution terminal and the tested power distribution switch are connected through the master station checking module, the voltage and the current output by the voltage and current output module are output to the tested power distribution terminal, the brake opening, the brake closing and the energy storage action signals of the tested power distribution terminal are connected to the tested power distribution switch through the master station checking module, and the position energy storage signals of the tested power distribution switch are fed back to the tested power distribution terminal.
2. The inspection method of claim 1, wherein: the external interface module comprises one or more of an external serial port, an external network port and an external USB port.
3. The inspection method of claim 1, wherein: the voltage and current output module comprises a voltage and current acquisition module, a DDS module and a voltage and current amplification module connected with the DDS module, wherein the input end of the DDS module is connected with the bottom layer core control module, and the output end of the voltage and current amplification module is connected with an external test interface; and the input end of the voltage and current acquisition module is connected with the external test interface, and the output end of the voltage and current acquisition module is connected with the bottom layer core control module.
4. The inspection method of claim 1, wherein: the external input device comprises a mouse and a keyboard; the external output device includes an LCD display screen.
5. The method of checking as set forth in claim 1, wherein when the core detection criteria of the check item is not acceptable, the method further comprises the diagnostic step of:
establishing an expert database, and collecting and configuring all points possibly suffering from problems in the device;
combing all the reasons possibly causing the unqualified verification of the test item, and carrying out next analysis on all the reasons by the system until a diagnosis result is obtained after the last layer;
setting criteria and rules corresponding to faults, and setting check standards for configured problem points;
and comprehensively analyzing all acquired information data to give a judgment result.
6. The method of testing of claim 1, further comprising:
when the master station generates alarm information, the alarm information is acquired through network communication with the master station, and the information is compared with locally stored uploaded information through reporting time, so that whether normal terminal reporting or false reporting of the master station is diagnosed;
all test items are used as independent test tasks, so that a plurality of test tasks can be freely combined to form a new test template, and the test template supports storage and solidification into a local file.
7. The method of testing of claim 1, further comprising:
in the automatic test of the switch and the complete equipment, the related attributes of the mechanical characteristics of the body switch are presented by using a graph method comprising switching-on/switching-off voltage current recording and fracture signal recording.
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| CN108469558A (en) * | 2018-03-08 | 2018-08-31 | 国网湖南省电力公司 | A kind of automatic checkout system and method for intelligence distribution transformer terminals |
| CN111044815A (en) * | 2019-12-02 | 2020-04-21 | 国网浙江嘉善县供电有限公司 | On-spot detection device of multi-functional automatic distribution equipment |
| CN112034822A (en) * | 2020-08-26 | 2020-12-04 | 广东电网有限责任公司韶关供电局 | Detection device and detection method for automatic switch controller |
| CN112968523A (en) * | 2021-02-23 | 2021-06-15 | 珠海万力达电气自动化有限公司 | Modularized intelligent power distribution terminal and self-healing control method thereof |
| CN113589044A (en) * | 2021-07-27 | 2021-11-02 | 国网江苏省电力有限公司电力科学研究院 | Automatic signal switching device for primary and secondary fusion detection equipment |
| CN113899942A (en) * | 2021-09-30 | 2022-01-07 | 国网山东省电力公司烟台供电公司 | Portable distribution network integrated intelligent live-line tester and testing method thereof |
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| CN102788921B (en) * | 2012-08-29 | 2015-04-01 | 广西电网公司电力科学研究院 | Detection method of function and performance of power distribution automation terminal device |
| CN202720296U (en) * | 2012-08-29 | 2013-02-06 | 广西电网公司电力科学研究院 | Platform for detecting function and performance of power distribution automatic terminal apparatus |
| CN103023149A (en) * | 2012-12-12 | 2013-04-03 | 天津市电力公司 | Intelligent power distribution terminal and intelligent power distribution system based on IEC61850 |
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| CN204719152U (en) * | 2015-05-07 | 2015-10-21 | 国家电网公司 | A kind of power distribution automation integration test pick-up unit |
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