CN114707102B - Test method and system for relay protection device with inverse time limit characteristic - Google Patents

Test method and system for relay protection device with inverse time limit characteristic Download PDF

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CN114707102B
CN114707102B CN202210626893.5A CN202210626893A CN114707102B CN 114707102 B CN114707102 B CN 114707102B CN 202210626893 A CN202210626893 A CN 202210626893A CN 114707102 B CN114707102 B CN 114707102B
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test
inverse time
protection device
action
relay protection
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CN114707102A (en
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李健龙
黎建宁
张平
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Guangdong Ins Energy Efficiency Technology Co ltd
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Guangdong Ins Energy Efficiency Technology Co ltd
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10—Complex mathematical operations
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation

Abstract

The invention discloses a test method and a test system for a relay protection device with inverse time limit characteristics, and belongs to the technical field of power supply systems; the method comprises the following steps: setting 12 action multiples; calculating to obtain 12 groups of test input currents corresponding to the action multiples; performing 12 groups of tests, and inputting test input current to the relay protection device to obtain the action time of the corresponding relay protection device; drawing a test inverse time limit characteristic curve according to the action multiple and the action time; and comparing the test inverse time limit characteristic curve with the rated inverse time limit characteristic curve, and judging the contact ratio of the test inverse time limit characteristic curve and the rated inverse time limit characteristic curve to obtain a test result. The system comprises: the device comprises a test task initiating module, a test executing module and a data processing module. The testing method and the system of the relay protection device with the inverse time limit characteristic solve the problem that the testing result obtained by the existing testing mode is inaccurate.

Description

Test method and system for relay protection device with inverse time limit characteristic
Technical Field
The invention relates to the technical field of power supply systems, in particular to a test method and a test system for a relay protection device with inverse time limit characteristics.
Background
The relay protection device has the following functions: the fault element is automatically, quickly and selectively cut off from the power system, so that the fault element is prevented from being continuously damaged, and other parts without faults are ensured to quickly recover to normal operation. Wherein, the effect of relay protection device's response element: the current protection circuit is used for reflecting the change condition of the current, and when the current reaches a certain threshold value, the current is transmitted to a comparison element of the relay protection device so as to continue the subsequent protection operation. The higher the current, the shorter the time required for the relay protection device to respond. The inductive element therefore has an inverse time limit characteristic, which means that the operating time of the protection device is inversely proportional to the magnitude of the short-circuit current. When the current flowing through the relay is larger, the action time of the relay is shorter; conversely, the operation time is long, the operation time limit mode is called inverse time limit, and the relay protection device with the characteristic is called an inverse time limit relay protection device. When the same line is short-circuited at different places, the protection has different action time limits due to different short-circuit currents, the action time is shorter as the short-circuit current of the line close to a power supply end is larger, and the protection is called inverse time limit overcurrent protection.
However, when the existing test method is used for carrying out the inverse time limit test of the relay protection device, the inverse time limit test variation trend of the relay protection device cannot be accurately obtained, so that the test result is inaccurate.
Disclosure of Invention
In view of the above drawbacks, an object of the present invention is to provide a testing method for a relay protection device with inverse time limit characteristics, which solves the problem of inaccurate test results obtained by the existing testing methods.
In view of the above drawbacks, an object of the present invention is to provide a testing system with an inverse time-lag relay protection device, which solves the problem of inaccurate test results obtained by the existing testing methods.
In order to achieve the purpose, the invention adopts the following technical scheme: a test method of a relay protection device with inverse time limit characteristics comprises the following steps:
a test task initiating step: acquiring a test task;
and (3) a test execution step: obtaining nameplate data of target equipment corresponding to a test task, wherein the nameplate data comprise setting current
Figure 669989DEST_PATH_IMAGE001
Multiple of
Figure 33974DEST_PATH_IMAGE002
And a nominal inverse time-lag characteristic curve;
setting 12 action multiples
Figure 925707DEST_PATH_IMAGE003
Of 1 at
Figure 109564DEST_PATH_IMAGE004
Multiple of each action
Figure 807261DEST_PATH_IMAGE005
；
Calculating to obtain 12 groups and action times
Figure 229015DEST_PATH_IMAGE003
Corresponding test input current, second
Figure 557228DEST_PATH_IMAGE004
Group test input current
Figure 493960DEST_PATH_IMAGE007
；
Using 12 sets of test input currents to carry out 12 sets of tests on the relay protection device in sequence, and inputting the test input currents to the relay protection device
Figure 464190DEST_PATH_IMAGE008
Obtaining the action time of the corresponding relay protection device
Figure 740451DEST_PATH_IMAGE009
；
And (3) data processing: according to the multiple of actions
Figure 36303DEST_PATH_IMAGE003
And time of action
Figure 398014DEST_PATH_IMAGE009
Drawing a test inverse time limit characteristic curve
Figure 437515DEST_PATH_IMAGE010
；
Inverse time limit characteristic curve of test
Figure 99440DEST_PATH_IMAGE010
Comparing with the rated inverse time limit characteristic curve, and judging the experimental inverse time limit characteristic curve
Figure 503877DEST_PATH_IMAGE010
And obtaining the test result according to the contact ratio of the test result and the rated inverse time limit characteristic curve.
It is worth mentioning that the first of the test execution steps
Figure 985559DEST_PATH_IMAGE004
Multiple of each action
Figure 766433DEST_PATH_IMAGE003
And experimental input current
Figure 282865DEST_PATH_IMAGE008
The calculation formula is obtained through the configuration step of the test formula;
the test formula configuration steps are as follows: presetting through management background
Figure 920520DEST_PATH_IMAGE004
Multiple of each action
Figure 991244DEST_PATH_IMAGE003
And experimental input current
Figure 575809DEST_PATH_IMAGE008
The calculation formula of (2); when calculating the action multiple
Figure 946748DEST_PATH_IMAGE003
Then, call from the management background
Figure 755304DEST_PATH_IMAGE004
Multiple of each action
Figure 578903DEST_PATH_IMAGE003
The calculation formula of (2); when calculating the test input current
Figure 498318DEST_PATH_IMAGE008
While, invoking test input current from the management backend
Figure 723763DEST_PATH_IMAGE008
The calculation formula of (2).
Optionally, before the test executing step, the method further comprises a step of entering field environment data: and acquiring environmental information when the test task is executed, wherein the environmental information comprises weather, temperature and humidity.
Specifically, the method further comprises a report generation step after the data processing step: and setting a data storage position, exporting the test result and the environmental data to the corresponding data storage position, and generating a test report, wherein the test report comprises test time, nameplate data of the target equipment, the test position, testers, the test result and the environmental data.
It should be noted that a test system having a relay protection device with an inverse time limit characteristic includes:
the test task initiating module: acquiring a test task;
the test execution module: the nameplate data comprises setting current
Figure 906482DEST_PATH_IMAGE001
Multiple of
Figure 14116DEST_PATH_IMAGE002
And a nominal inverse time-limit characteristic curve; for setting up 12 action multiples
Figure 674904DEST_PATH_IMAGE003
First, of
Figure 20435DEST_PATH_IMAGE004
Multiple of each action
Figure 170793DEST_PATH_IMAGE005
(ii) a For calculating to obtain 12 groups and action times
Figure 703406DEST_PATH_IMAGE003
Corresponding test input current, second
Figure 230202DEST_PATH_IMAGE004
Group test input current
Figure 430239DEST_PATH_IMAGE006
(ii) a Using 12 sets of test input currents to carry out 12 sets of tests on the relay protection device in sequence, and inputting the test input currents to the relay protection device
Figure 485920DEST_PATH_IMAGE008
Obtaining the action time of the corresponding relay protection device
Figure 771408DEST_PATH_IMAGE009
；
A data processing module: for according to action multiple
Figure 39578DEST_PATH_IMAGE003
And time of action
Figure 890860DEST_PATH_IMAGE009
Drawing a test inverse time limit characteristic curve
Figure 320704DEST_PATH_IMAGE010
(ii) a And also for testing inverse time limit characteristic curve
Figure 93488DEST_PATH_IMAGE010
Comparing with the rated inverse time limit characteristic curve, and judging the experimental inverse time limit characteristic curve
Figure 962087DEST_PATH_IMAGE010
And (4) obtaining a test result by rating the contact ratio of the inverse time characteristic curve.
Optionally, the test system with the relay protection device with the inverse time limit characteristic further includes a test formula configuration module;
a first action multiple in the test execution module
Figure 605558DEST_PATH_IMAGE003
And experimental input current
Figure 534199DEST_PATH_IMAGE008
The calculation formula is obtained through the test formula configuration module;
the test formula configuration module is used for presetting the first test formula through the management background
Figure 263121DEST_PATH_IMAGE004
Multiple of each action
Figure 935411DEST_PATH_IMAGE003
And experimental input current
Figure 433388DEST_PATH_IMAGE008
The calculation formula of (2); and also for calculating action multiple
Figure 532931DEST_PATH_IMAGE003
Then, call from the management background
Figure 545887DEST_PATH_IMAGE004
Multiple of each action
Figure 490709DEST_PATH_IMAGE003
The calculation formula of (2); and also for calculating the test input current
Figure 108772DEST_PATH_IMAGE008
Time-of-day, test input current is called from management background
Figure 582479DEST_PATH_IMAGE008
The calculation formula of (c).
Specifically, the testing system with the inverse time limit characteristic relay protection device further comprises a field environment data logging module, wherein the field environment data logging module is used for acquiring environment information when the testing task is executed, and the environment information comprises weather, temperature and humidity.
Preferably, the test system with the inverse time-limit characteristic relay protection device further comprises a report generating module, wherein the report generating module is used for setting a data storage position, and is also used for exporting the test result and the environmental data to the corresponding data storage position and generating a test report, and the test report comprises the test time, nameplate data of the target equipment, the test position, the tester, the test result and the environmental data.
One of the above technical solutions has the following beneficial effects: in the test method of the relay protection device with the inverse time limit characteristic, 12 action multiples are set
Figure 348309DEST_PATH_IMAGE003
And calculating to obtain corresponding test input current
Figure 565664DEST_PATH_IMAGE008
Then the action time of the induction element of the relay protection device can be displayed through tests
Figure 38234DEST_PATH_IMAGE009
The method comprises the steps of generating obviously changed inflection points, proportion conditions before and after the inflection points so as to accurately obtain a test inverse time limit characteristic curve, comparing the change trends and shapes of the two curves through a rated inverse time limit characteristic curve arranged on a relay protection device, representing that the inverse time limit characteristic of the relay protection device is normal when the curve is superposed, and representing that the inverse time limit characteristic of the relay protection device is abnormal otherwise, and further obtaining a corresponding test result.
Drawings
FIG. 1 is a flow chart of a testing method of a relay protection device with inverse time limit characteristics according to an embodiment of the present invention;
fig. 2 is a rated inverse time characteristic curve of the relay protection device according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention and are not to be construed as limiting the present invention.
The following disclosure provides many different embodiments or examples for implementing different configurations of embodiments of the invention. In order to simplify the disclosure of embodiments of the invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, embodiments of the invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed.
As shown in fig. 1 and 2, a method for testing a relay protection device with an inverse time-lag characteristic includes:
initiating a test task: acquiring a test task;
and (3) test execution steps: obtaining nameplate data of target equipment corresponding to a test task, wherein the nameplate data comprise setting current
Figure 479579DEST_PATH_IMAGE001
Multiple of
Figure 935968DEST_PATH_IMAGE002
And a nominal inverse time-limit characteristic curve;
setting 12 action multiples
Figure 425856DEST_PATH_IMAGE003
Of 1 at
Figure 284090DEST_PATH_IMAGE004
Multiple of each action
Figure 630758DEST_PATH_IMAGE005
；
Calculating to obtain 12 groups and action times
Figure 308864DEST_PATH_IMAGE003
Corresponding test input current, second
Figure 868021DEST_PATH_IMAGE004
Group test input current
Figure 377500DEST_PATH_IMAGE006
；
Using 12 sets of test input currents to carry out 12 sets of tests on the relay protection device in sequence, and inputting the test input currents into the relay protection device
Figure 98331DEST_PATH_IMAGE008
Obtaining the action time of the corresponding relay protection device
Figure 263733DEST_PATH_IMAGE009
；
And (3) data processing: according to the multiple of actions
Figure 157740DEST_PATH_IMAGE003
And time of action
Figure 724988DEST_PATH_IMAGE009
Drawing a test inverse time limit characteristic curve
Figure 679037DEST_PATH_IMAGE010
；
Inverse time limit characteristic curve of test
Figure 331735DEST_PATH_IMAGE010
Compared with rated inverse time-limit characteristic curveThe inverse time limit characteristic curve of the test is compared and judged
Figure 967116DEST_PATH_IMAGE010
And obtaining the test result according to the contact ratio of the test result and the rated inverse time limit characteristic curve.
In the test method of the relay protection device with the inverse time limit characteristic, 12 action multiples are set
Figure 451187DEST_PATH_IMAGE003
And calculating to obtain corresponding test input current
Figure 513821DEST_PATH_IMAGE008
Then the action time of the induction element of the relay protection device can be displayed through tests
Figure 450553DEST_PATH_IMAGE009
The method comprises the steps of generating obviously changed inflection points, proportion conditions before and after the inflection points so as to accurately obtain a test inverse time limit characteristic curve, comparing the change trends and shapes of the two curves through a rated inverse time limit characteristic curve arranged on a relay protection device, representing that the inverse time limit characteristic of the relay protection device is normal when the curve is superposed, and representing that the inverse time limit characteristic of the relay protection device is abnormal otherwise, and further obtaining a corresponding test result.
In the test of the relay protection device, the examination of the inverse time limit characteristic of the induction element of the relay protection device is one of the important items, and aims to detect the current magnitude when the inverse proportion of the action current to the action time of the induction element of the relay protection device is obviously changed, namely the action multiple, wherein the action multiple = the current value divided by the rated current value.
How to design a group of action multiples can also be said to be how to design a test input current with a large numerical value, and then the action time obtained through the test shows the inflection point of the induction element with obviously changed action time, the proportion of the action time before and after the inflection point, which is a work difficult for non-skilled test technicians to accurately and quickly complete. Non-standard depth of fieldWhen a test technician uses the existing test method to perform the inverse time limit test of the relay protection device, the inverse time limit test variation trend of the relay protection device cannot be accurately obtained, so that the test result is inaccurate. Thus is provided to
Figure 624045DEST_PATH_IMAGE004
Multiple of each action
Figure 165885DEST_PATH_IMAGE005
And the system is fixed in the system, so that the action multiple can be quickly determined by both non-skilled testing technicians and self testing technicians, and the working efficiency and the accuracy of the testing technicians are improved. Is provided with
Figure 461737DEST_PATH_IMAGE005
The 1 st to 11 th action times can be set to be 1 to times
Figure 89028DEST_PATH_IMAGE002
The average distribution is performed to make the obtained test inverse time limit characteristic curve consistent with the action multiple of the X axis of the rated inverse time limit characteristic curve of the relay protection device shown in figure 2 (the X axis range and multiple of the rated inverse time limit characteristic curve of the relay protection device)
Figure 66211DEST_PATH_IMAGE002
The value is relevant). The rated inverse time characteristic curve of the mechanical relay protection device and the GL type relay protection device is generally found on the external appearance surface, and the rated inverse time characteristic curve of the microcomputer relay protection device is generally found in an electronic panel for installation.
In some embodiments, the first of the trial execution steps
Figure 259295DEST_PATH_IMAGE004
Multiple of each action
Figure 929311DEST_PATH_IMAGE003
And experimental input current
Figure 778318DEST_PATH_IMAGE008
The calculation formula is obtained through the configuration step of the test formula;
the test formula configuration steps are as follows: presetting through management background
Figure 621509DEST_PATH_IMAGE004
Multiple of each action
Figure 872362DEST_PATH_IMAGE003
And the experimental input current
Figure 447700DEST_PATH_IMAGE008
The calculation formula of (2); when calculating the action multiple
Figure 49582DEST_PATH_IMAGE003
Then, call from the management background
Figure 430885DEST_PATH_IMAGE004
Multiple of each action
Figure 536244DEST_PATH_IMAGE003
The calculation formula of (2); when calculating the test input current
Figure 344800DEST_PATH_IMAGE008
Time-of-day, test input current is called from management background
Figure 433979DEST_PATH_IMAGE008
The calculation formula of (2).
The test formula configuration step is used for pre-configuring an automatic calculation formula needed in a test system, meanwhile, each test item of each relay protection device has corresponding configuration in the system and is used for setting the formula for automatically calculating the test item, parameters of the formula are the test item participating in calculation and a target test item, namely the current automatically calculated test item, a special calculation method is realized by a basic calculation method built in the system or dynamic codes arranged in a formula configuration page, and therefore the purpose that the method is realized is thatAnd immediately calculating the result after inputting the test items. In one embodiment, the action multiple is calculated when needed
Figure 291077DEST_PATH_IMAGE003
Then, selecting formula management option in the terminal, and then selecting corresponding action multiple
Figure 313259DEST_PATH_IMAGE003
The management background will call
Figure 761558DEST_PATH_IMAGE004
Multiple of each action
Figure 806875DEST_PATH_IMAGE003
Then only the corresponding parameters need to be input in the terminal: setting current
Figure 529980DEST_PATH_IMAGE001
Multiple of
Figure 609931DEST_PATH_IMAGE011
Can obtain 12 groups of action multiples
Figure 760290DEST_PATH_IMAGE003
。
It is worth mentioning that the method further comprises the step of entering field environment data before the test execution step: and acquiring environmental information when the test task is executed, wherein the environmental information comprises weather, temperature and humidity. The temperature and humidity can affect the insulation property, the heat emission and the like of the power distribution equipment; temperature can also affect the operation of the equipment, such as the stability of the protective elements and the accuracy of the metering, and can indirectly affect the accuracy of the test results. Therefore, the accuracy of the test can be further improved by recording the environmental information.
Optionally, after the data processing step, a report generating step is further included: and setting a data storage position, exporting the test result and the environmental data to the corresponding data storage position, and generating a test report, wherein the test report comprises test time, nameplate data of the target equipment, the test position, testers, the test result and the environmental data. Each test item of each relay protection device has a corresponding configuration item in the system. In one embodiment, the configuration items are data storage positions and the configuration values are D17, namely the test reports of the test items are filled in the cells D17 in the excel file when the test reports are generated, and the process from the test data input by the terminal to the generation of the reports is completed in this way. Wherein, the test time, the test position and the tester are all obtained in the test task.
Specifically, the test task initiating step specifically includes: generating a test task according to the content information of the test contract, and issuing the test task corresponding to the test contract after the test contract is submitted; or generating a test task according to the customer information and the test project information and issuing the test task.
The overall flow of the test method of the relay protection device with the inverse time limit characteristic is as follows:
receiving a test task: and receiving a device test task.
Inputting field environment data: the system acquires the current local environment information or acquires the environment information by itself through other tools and ways and inputs the environment information into the system.
Defining a target electric room of the test: and recording the basic information (including the electric room number and the electric room type) of the electric room related to the test project.
Entering the machine account information of the tested equipment: and inputting nameplate data of the target equipment into the system.
Inputting test data: and recording the data obtained by the test result into the system.
Generating, by the system, a derived test report: the system exports an electronic report, the system sleeves nameplate data of the target equipment and a test result into a report template, a report is generated and returned to a test technician for downloading and using, and the report cover page can generate a unique report applet code.
In some embodiments, a testing system with an inverse time-limit relay protection device includes:
the test task initiating module: acquiring a test task;
the test execution module: the system comprises a data acquisition module, a data processing module and a data processing module, wherein the data acquisition module is used for acquiring nameplate data of target equipment corresponding to a test task, and the nameplate data comprises setting current, multiples and a rated inverse time limit characteristic curve; for setting up 12 action multiples
Figure 292903DEST_PATH_IMAGE003
First, of
Figure 22961DEST_PATH_IMAGE004
Multiple of each action
Figure 19736DEST_PATH_IMAGE005
(ii) a For calculating to obtain 12 groups and action times
Figure 278679DEST_PATH_IMAGE003
Corresponding test input current, second
Figure 564167DEST_PATH_IMAGE004
Group test input current
Figure 629075DEST_PATH_IMAGE006
(ii) a Using 12 sets of test input currents to carry out 12 sets of tests on the relay protection device in sequence, and inputting the test input currents into the relay protection device
Figure 418039DEST_PATH_IMAGE008
Obtaining the action time of the corresponding relay protection device
Figure 379042DEST_PATH_IMAGE009
；
A data processing module: for according to action multiple
Figure 948564DEST_PATH_IMAGE003
And time of action
Figure 489266DEST_PATH_IMAGE009
Drawing a test inverse time limit characteristic curve
Figure 460633DEST_PATH_IMAGE010
(ii) a And also for testing inverse time limit characteristic curve
Figure 61379DEST_PATH_IMAGE010
Comparing with rated inverse time limit characteristic curve, and judging experimental inverse time limit characteristic curve
Figure 141634DEST_PATH_IMAGE010
And obtaining the test result according to the contact ratio of the test result and the rated inverse time limit characteristic curve.
It is worth to be noted that the test system with the inverse time limit characteristic relay protection device further comprises a test formula configuration module;
the first of the test execution modules
Figure 486028DEST_PATH_IMAGE004
Multiple of each action
Figure 515164DEST_PATH_IMAGE003
And experimental input current
Figure 614707DEST_PATH_IMAGE008
The calculation formula is obtained through the test formula configuration module;
the test formula configuration module is used for presetting the first test formula through the management background
Figure 830925DEST_PATH_IMAGE004
Multiple of each action
Figure 41326DEST_PATH_IMAGE003
And the experimental input current
Figure 659389DEST_PATH_IMAGE008
The calculation formula of (2); and also for calculating action multiple
Figure 133096DEST_PATH_IMAGE003
Then, call from the management background
Figure 898927DEST_PATH_IMAGE004
Multiple of each action
Figure 585123DEST_PATH_IMAGE003
The calculation formula of (2); and also for use when calculating the test input current
Figure 385589DEST_PATH_IMAGE008
Time-of-day, test input current is called from management background
Figure 764617DEST_PATH_IMAGE008
The calculation formula of (c).
Optionally, the testing system with the inverse time-limit characteristic relay protection device further comprises a field environment data logging module, wherein the field environment data logging module is used for acquiring environment information when the testing task is executed, and the environment information includes weather, temperature and humidity.
Specifically, the test system with the relay protection device with the inverse time limit characteristic further comprises a report generation module, wherein the report generation module is used for setting a data storage position, and is also used for exporting the test result and the environmental data to the corresponding data storage position to generate a test report, and the test report comprises the test time, the nameplate data of the target device, the test position, the tester, the test result and the environmental data.
The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.

Claims (8)

1. A test method for a relay protection device with an inverse time limit characteristic is characterized by comprising the following steps:
initiating a test task: acquiring a test task;
and (3) test execution steps: obtaining nameplate data of target equipment corresponding to a test task, wherein the nameplate data comprise setting current
Figure 470954DEST_PATH_IMAGE001
Multiple of
Figure 569098DEST_PATH_IMAGE002
And a nominal inverse time-lag characteristic curve;
setting 12 action multiples
Figure 521005DEST_PATH_IMAGE003
First, of
Figure 307695DEST_PATH_IMAGE004
Multiple of each action
Figure 619728DEST_PATH_IMAGE005
；
Calculating to obtain 12 groups and action times
Figure 182165DEST_PATH_IMAGE003
Corresponding test input current, second
Figure 819820DEST_PATH_IMAGE004
Input current of group test
Figure 703593DEST_PATH_IMAGE006
Wherein, the action multiple = the input current value ÷ the setting current value;
using 12 sets of test input currents to carry out 12 sets of tests on the relay protection device in sequence, and inputting the test input currents to the relay protection device
Figure 553737DEST_PATH_IMAGE007
Obtaining the action time of the corresponding relay protection device
Figure 970681DEST_PATH_IMAGE008
；
A data processing step: according to the multiple of actions
Figure 513658DEST_PATH_IMAGE003
And time of action
Figure 619148DEST_PATH_IMAGE008
Drawing a test inverse time limit characteristic curve
Figure 804142DEST_PATH_IMAGE009
Wherein the action time of the inductive element of the relay protection device is shown through tests
Figure 967270DEST_PATH_IMAGE008
Obtaining a test inverse time limit characteristic curve according to the inflection point, the proportion before the inflection point and the proportion after the inflection point which are obviously changed;
inverse time limit characteristic curve of test
Figure 258312DEST_PATH_IMAGE009
Comparing with the rated inverse time limit characteristic curve, and judging the experimental inverse time limit characteristic curve
Figure 382257DEST_PATH_IMAGE009
And obtaining a test result by the coincidence degree of the characteristic curve and the rated inverse time limit characteristic curve, wherein the coincidence represents that the inverse time limit characteristic of the relay protection device is normal, otherwise, the coincidence represents that the inverse time limit characteristic of the relay protection device is abnormal.
2. The method for testing a relay protection device having an inverse time-lag characteristic according to claim 1, wherein: the first of the test execution steps
Figure 839783DEST_PATH_IMAGE004
Multiple of each action
Figure 857418DEST_PATH_IMAGE003
And experimental input current
Figure 522623DEST_PATH_IMAGE007
The calculation formula is obtained through the configuration step of the test formula;
the test formula configuration steps are as follows: presetting through management background
Figure 68617DEST_PATH_IMAGE004
Multiple of each action
Figure 346146DEST_PATH_IMAGE003
And experimental input current
Figure 811763DEST_PATH_IMAGE007
The calculation formula of (2); when calculating the action multiple
Figure 913448DEST_PATH_IMAGE003
When, call from the management background to
Figure 871040DEST_PATH_IMAGE004
Multiple of each action
Figure 670369DEST_PATH_IMAGE003
The calculation formula of (2); when calculating the test input current
Figure 6803DEST_PATH_IMAGE007
Time-of-day, test input current is called from management background
Figure 764544DEST_PATH_IMAGE007
The calculation formula of (c).
3. The method for testing a relay protection device having an inverse time-lag characteristic according to claim 1, wherein: the method also comprises the following steps of recording field environment data before the test execution step: and acquiring environmental information when the test task is executed, wherein the environmental information comprises weather, temperature and humidity.
4. The method for testing a relay protection device having an inverse time-lag characteristic according to claim 1, wherein: the data processing step further comprises a report generation step: and setting a data storage position, exporting the test result and the environmental data to the corresponding data storage position, and generating a test report, wherein the test report comprises test time, nameplate data of the target equipment, the test position, the tester, the test result and the environmental data.
5. A test system having a relay protection device with an inverse time limit characteristic, comprising:
the test task initiating module: acquiring a test task;
the test execution module: the nameplate data comprises setting current
Figure 317754DEST_PATH_IMAGE010
Multiple of
Figure 327298DEST_PATH_IMAGE002
And a nominal inverse time-limit characteristic curve; for setting up 12 action multiples
Figure 298665DEST_PATH_IMAGE003
Of 1 at
Figure 712460DEST_PATH_IMAGE004
Multiple of each action
Figure 910223DEST_PATH_IMAGE011
(ii) a For calculating to obtain 12 groups and action times
Figure 316934DEST_PATH_IMAGE003
Corresponding test input current, second
Figure 392075DEST_PATH_IMAGE004
Group test input current
Figure 366984DEST_PATH_IMAGE006
Wherein, the action multiple = the input current value ÷ the setting current value; using 12 sets of test input currents to carry out 12 sets of tests on the relay protection device in sequence, and inputting the test input currents to the relay protection device
Figure 911098DEST_PATH_IMAGE007
Obtaining the action time of the corresponding relay protection device
Figure 872232DEST_PATH_IMAGE008
；
A data processing module: for according to action multiple
Figure 552612DEST_PATH_IMAGE003
And time of action
Figure 964002DEST_PATH_IMAGE008
Drawing a test inverse time limit characteristic curve
Figure 979100DEST_PATH_IMAGE009
Wherein the action time of the inductive element of the relay protection device is shown through tests
Figure 727613DEST_PATH_IMAGE008
Obtaining a test inverse time limit characteristic curve according to the inflection point, the proportion before the inflection point and the proportion after the inflection point which are obviously changed; and also for testing inverse time limit characteristic curve
Figure 669024DEST_PATH_IMAGE009
Comparing with the rated inverse time limit characteristic curve, and judging the experimental inverse time limit characteristicSexual curve
Figure 861102DEST_PATH_IMAGE009
And obtaining a test result by the coincidence degree of the characteristic curve and the rated inverse time limit characteristic curve, wherein the coincidence represents that the inverse time limit characteristic of the relay protection device is normal, otherwise, the coincidence represents that the inverse time limit characteristic of the relay protection device is abnormal.
6. The test system with the inverse time-lag relay protection device according to claim 5, wherein: the test system with the inverse time limit characteristic relay protection device also comprises a test formula configuration module;
the first of the test execution modules
Figure 848650DEST_PATH_IMAGE004
Multiple of each action
Figure 541800DEST_PATH_IMAGE003
And experimental input current
Figure 711619DEST_PATH_IMAGE007
The calculation formula is obtained through the test formula configuration module;
the test formula configuration module is used for presetting the first test formula through the management background
Figure 464811DEST_PATH_IMAGE004
Multiple of each action
Figure 205234DEST_PATH_IMAGE003
And experimental input current
Figure 46282DEST_PATH_IMAGE007
The calculation formula of (2); and also for calculating action multiple
Figure 696706DEST_PATH_IMAGE003
Time, slave management and background dispatchingBy using the first
Figure 479854DEST_PATH_IMAGE004
Multiple of each action
Figure 792779DEST_PATH_IMAGE003
The calculation formula of (2); and also for calculating the test input current
Figure 421206DEST_PATH_IMAGE007
Time-of-day, test input current is called from management background
Figure 660557DEST_PATH_IMAGE007
The calculation formula of (2).
7. The test system with the inverse time-lag relay protection device according to claim 5, wherein: the testing system with the inverse time limit characteristic relay protection device further comprises a field environment data inputting module, wherein the field environment data inputting module is used for acquiring environment information when the testing task is executed, and the environment information comprises weather, temperature and humidity.
8. The test system with the inverse time-lag relay protection device according to claim 5, wherein: the test system with the relay protection device with the inverse time limit characteristic further comprises a report generating module, wherein the report generating module is used for setting a data storage position, and is also used for exporting the test result and the environmental data to the corresponding data storage position to generate a test report, and the test report comprises the test time, nameplate data of the target equipment, the test position, the tester, the test result and the environmental data.
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