CN115236440A - Automatic time setting, time keeping and SOE resolution testing method for distribution automation device - Google Patents

Automatic time setting, time keeping and SOE resolution testing method for distribution automation device Download PDF

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Publication number
CN115236440A
CN115236440A CN202210866504.6A CN202210866504A CN115236440A CN 115236440 A CN115236440 A CN 115236440A CN 202210866504 A CN202210866504 A CN 202210866504A CN 115236440 A CN115236440 A CN 115236440A
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time
soe
tester
event
upper computer
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CN202210866504.6A
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Inventor
杨可标
刘洛阳
郭子仪
杨旭凯
耿紫妍
刘韶婧
范艳峰
孙迅雷
赵广旭
王俊辉
原晓磊
于帅
赵长浩
赵华云
张又珺
李卫东
刘园伟
李嘉
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Xuchang Ketop Testing Research Institute Co ltd
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Xuchang Ketop Testing Research Institute Co ltd
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Priority to CN202210866504.6A priority Critical patent/CN115236440A/en
Publication of CN115236440A publication Critical patent/CN115236440A/en
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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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/20—Modifications of basic electric elements for use in electric measuring instruments; Structural combinations of such elements with such instruments

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  • General Physics & Mathematics (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)

Abstract

A method for automatically testing time synchronization, time keeping and SOE resolution of a distribution automation device comprises an SOE tester, a direct-current power supply module and an upper computer, wherein the direct-current power supply module is respectively connected with the SOE tester and a device to be tested, and the upper computer is respectively connected with the SOE tester and the device to be tested; the SOE tester is used for sequentially closing the channels according to the instructions issued by the upper computer; the direct current power supply module is used for outputting corresponding voltage according to the on-voltage level of the tested device; and the upper computer is used for issuing an instruction to the SOE tester, acquiring the event triggering time of the recorded event of the tested device, and analyzing the event time scale so as to obtain the SOE resolution, the time synchronization precision and the time keeping precision. According to the automatic testing method for time setting, timekeeping and SOE resolution of the distribution automation device, the direct-current power supply and the SOE tester are integrated together, the method can be adapted to tested devices with all voltage levels, and through the SOE tester, each testing device which is independent of each other is set up into a controlled system.

Description

Automatic testing method for time setting, time keeping and SOE resolution of distribution automation device
Technical Field
The invention relates to the technical field of distribution automation, in particular to a time setting, timekeeping and SOE resolution automatic testing method for a distribution automation device.
Background
In the field of distribution automation, SOE (resolution in event sequence recording station) is an important index, and the time setting and time keeping function determines the correctness of the SOE time scale. The testing of time synchronization and SOE resolution requires a testing system consisting of a relay protection tester, a time synchronizer, a GPS antenna, a distribution automation device, a direct current power supply and a monitoring master station. When the three items are tested, a tester needs to operate the tester for many times, change the output of the direct current power supply, read the data of the main station, record the test result, calculate and the like, and a large amount of manpower is consumed.
The SOE resolution test method in the prior art comprises the following steps: 1) Connecting two open/close terminals of a tested device into an open 1 and an open 2 of a relay protection tester; 2) Setting two states in a state sequence of the relay protection tester, wherein the state 1 is closed and opened for 1, the duration time is 2ms (defined according to the parameters of the tested device), and the state 2 is closed and opened for 1 and opened for 2; 3) The device under test records the time of the event trigger, and the time scale of the event 1 is 2ms earlier than that of the event 2. The SOE resolution of the tested device is less than or equal to 2ms.
The time setting test method in the prior art comprises the following steps: 1) Respectively carrying out time synchronization operation on the relay protection tester and the tested device; 2) Connecting an open-close terminal of a tested device to an open-close terminal of a relay protection tester; 3) The relay protection device is set to be triggered at an integral point, the relay protection device is opened and closed after the set time is reached, the tested device records the event and sends the event to the master station; 4) And recording the time scale of the event at the master station, and comparing the time scale with the integral point trigger event set by the relay protection, thereby calculating the time setting precision of the device to be tested.
The timekeeping test method in the prior art comprises the following steps: 1) Carrying out time setting operation on the device, and calculating the time setting precision of the device; 2) The tested device closes the time setting instruction and cuts off the power for 72h; 3) The relay protection tester carries out time setting operation, setting the operation as integral point triggering, opening and closing after the set time, recording the event by the tested device, and uploading the event to the master station; 4) Recording the time scale of the event at the master station, and comparing the time scale with the set punctuation time of the relay protection, thereby calculating the time setting precision of the tested device after keeping the time for 72h; 5) And comparing the time setting precision after the time keeping for 72h with the time setting precision before the time keeping, and calculating the time keeping error of the device to be measured 72 h.
In the current test, all test devices are mutually independent, the whole process needs manual participation, and the test efficiency is low. And the capability of testing a plurality of devices together is not provided, and the testing efficiency is seriously influenced.
Therefore, it is necessary to provide an automatic testing method for time synchronization, time keeping and SOE resolution of a distribution automation device to solve the deficiencies of the prior art.
Disclosure of Invention
The invention aims to avoid the defects of the prior art and provides an automatic testing method for time setting, timekeeping and SOE resolution of a power distribution automation device. According to the automatic testing method for the time setting, the timekeeping and the SOE resolution of the distribution automation device, a large amount of manpower and material resources can be saved through the output of the SOE tester, the automatic reading of the event time scale sent by the tested device, the automatic calculation of the testing result and other means.
The above object of the present invention is achieved by the following technical measures:
the method comprises an SOE tester, a direct-current power supply module and an upper computer, wherein the direct-current power supply module is respectively connected with the SOE tester and a tested device, and the upper computer is respectively connected with the SOE tester and the tested device.
And the SOE tester is used for sequentially closing the channels according to the commands issued by the upper computer.
And the direct-current power supply module is used for outputting corresponding voltage according to the on-voltage level of the tested device.
And the upper computer is used for issuing an instruction to the SOE tester, acquiring the event triggering time of the recorded event of the tested device, and analyzing the event time scale so as to obtain the SOE resolution, the time synchronization precision and the time keeping precision.
Preferably, the SOE tester is provided with a plurality of opening channels, and each opening channel is correspondingly provided with an opening positive and an opening negative.
Preferably, the dc power supply module is respectively connected to the outlets of the at least two outlet channels, and the outlet channels are defined as working outlet channels.
The output negative of the working output channel is connected with the input of the tested device in a one-to-one correspondence manner, and the input negative of the tested device is connected with the direct-current power supply module.
Preferably, the issued command is a time trigger interval and an hour trigger time.
Preferably, the time trigger interval is 1ms to 99ms.
The invention discloses a time setting, timekeeping and SOE resolution automatic testing method of a distribution automation device, which comprises the following steps:
step (1), setting the level of the on-voltage of a tested device in a direct current power supply module, and connecting an SOE tester with an antenna;
step (2), time setting processing is respectively carried out on the SOE tester and the tested device;
step (3), setting an integral point trigger time and a time trigger interval in the upper computer, and issuing an instruction to the SOE tester;
step (4), the SOE tester closes a plurality of opening channels in sequence on time according to the time trigger interval and the integral point trigger time in the issued command;
triggering and recording events of the device to be tested, and then sending the event triggering time to an upper computer to obtain the SOE resolution and the first time alignment precision of the device to be tested;
and (6) powering off the tested device for n hours, then powering on, closing an open channel at the integral point by the SOE tester according to the integral point trigger time in the step (4), triggering and recording the event of the tested device, and then sending the event trigger time to the upper computer to obtain the n-hour time-keeping precision of the tested device.
Preferably, in the step (4), when the specific SOE tester reaches the trigger time at the same point, one open channel is closed, and then other open channels are closed in time in sequence according to the time trigger interval.
Preferably, the step (5) is specifically to trigger and record an event of the device to be detected, then send the event trigger time to an upper computer, and the upper computer analyzes the event time scale and compares the event time scale with the integral point trigger time to obtain the SOE resolution and the first time-alignment precision of the device to be detected.
Preferably, the step (6) is specifically that the device to be tested is powered on after being powered off for n hours, the SOE tester closes an open channel at the integral point according to the integral point trigger time in the step (4), the event of the device to be tested is triggered and recorded, then the event trigger time is sent to the upper computer, the upper computer analyzes the event time scale to obtain a second time-alignment precision, and the second time-alignment precision is subtracted from the first time-alignment precision in the step (5) to obtain the n-hour time-keeping precision of the device to be tested.
Preferably, n is 72.
Preferably, the time trigger interval is 2ms.
The invention relates to a time setting, time keeping and SOE resolution automatic testing method of a distribution automation device, which comprises an SOE tester, a direct-current power supply module and an upper computer, wherein the direct-current power supply module is respectively connected with the SOE tester and a tested device; the SOE tester is used for sequentially closing the channels according to the instructions issued by the upper computer; the direct current power supply module is used for outputting corresponding voltage according to the on-voltage level of the tested device; and the upper computer is used for issuing an instruction to the SOE tester, acquiring the event triggering time of the recorded event of the tested device, and analyzing the event time scale so as to obtain the SOE resolution, the time synchronization precision and the time keeping precision. According to the automatic testing method for time setting, timekeeping and SOE resolution of the distribution automation device, the direct-current power supply and the SOE tester are integrated together, the method can be adapted to tested devices with all voltage levels, and through the SOE tester, each testing device which is independent of each other is set up into a controlled system. A large amount of manpower and material resources are saved through output of the SOE tester, automatic reading of event time scales sent by the tested device, automatic calculation of test results and other means.
Drawings
The invention is further illustrated by means of the attached drawings, the content of which is not in any way limiting.
Fig. 1 is a flowchart of a time setting, time keeping and SOE resolution automatic testing method of a distribution automation device.
In fig. 1, there are included:
the device comprises an SOE tester 100, a direct current power supply module 200, an upper computer 300 and a device under test 400.
Detailed Description
The technical solution of the present invention is further illustrated by the following examples.
Example 1.
A distribution automation device time setting, time keeping and SOE resolution automatic test method is shown in figure 1 and comprises an SOE tester 100, a direct current power supply module 200 and an upper computer 300, wherein the direct current power supply module 200 is respectively connected with the SOE tester 100 and a device under test 400, and the upper computer 300 is respectively connected with the SOE tester 100 and the device under test 400.
The SOE tester 100 is used for sequentially closing the channels according to the commands issued by the upper computer 300.
And the direct current power supply module 200 is used for outputting corresponding voltage according to the on-voltage level of the tested device.
And the upper computer 300 is used for issuing an instruction to the SOE tester 100, acquiring the event triggering time of the record of the tested device 400, and analyzing the event time scale so as to obtain the SOE resolution, the time synchronization precision and the time keeping precision.
The device under test 400 of the present invention is responsible for recording event trigger event times.
The SOE tester 100 is provided with a plurality of open channels, and each open channel is provided with one open positive and one open negative. The direct current power supply module 200 is respectively connected with the outlet of at least two outlet channels, and the outlet channels are defined as working outlet channels; the open negative of the working open channel is connected with the open negative of the tested device 400 in a one-to-one correspondence manner, and the open negative of the tested device 400 is connected with the direct current power supply module 200.
According to the automatic time synchronization, time keeping and SOE resolution testing method of the distribution automation device of the present invention, the dc power module 200 may have a plurality of open positive connections in the open channel, such as 2, 3, 4 or more, and the embodiment is described with 2, as shown in fig. 1.
The issued commands are time trigger intervals and integer trigger time. The time trigger interval is 1 ms-99 ms.
The invention discloses a time setting, timekeeping and SOE resolution automatic testing method of a distribution automation device, which comprises the following steps:
step (1), setting the on-voltage level of the tested device 400 in the direct current power supply module 200, and connecting the SOE tester 100 with an antenna;
step (2), the SOE tester 100 and the tested device 400 are subjected to time synchronization respectively;
step (3), setting an integral point trigger time and a time trigger interval in the upper computer 300, and issuing an instruction to the SOE tester 100;
step (4), the SOE tester 100 closes a plurality of open channels in sequence on time according to the time trigger interval and the integral point trigger time in the issued command;
triggering and recording events of the tested device 400, and then sending the event triggering time to the upper computer 300 to obtain the SOE resolution and the first time alignment precision of the tested device 400;
and (6) powering off the tested device 400 for n hours and then powering on, closing an open channel at the integral point by the SOE tester 100 according to the integral point trigger time in the step (4), triggering and recording the event of the tested device 400, and then sending the event trigger time to the upper computer 300 to obtain the n-hour timekeeping precision of the tested device 400.
In the specific step (4), when the triggering time of the specific SOE tester 100 reaches the set point, one open channel is closed, and then other open channels are closed in time in sequence according to the time triggering interval.
It should be noted that the integral point trigger time of step (4) in the present invention is, for example, 14:40, time trigger interval of 2ms, when the time reaches 14:40 the first open channel is closed and after 2ms the second open channel is closed.
And (5) specifically triggering and recording an event of the tested device 400, then sending the event triggering time to the upper computer 300, and analyzing the event time scale by the upper computer 300 and comparing the event time scale with the integral point triggering time to obtain the SOE resolution and the first time alignment precision of the tested device 400.
And (6) specifically, powering off the tested device 400 for n hours and then powering on, closing an open channel at the integral point by the SOE tester 100 according to the integral point triggering time in the step (4), triggering and recording an event of the tested device 400, then uploading the event triggering time to the upper computer 300, analyzing the event time scale by the upper computer 300 to obtain a second time-alignment precision, and subtracting the second time-alignment precision from the first time-alignment precision in the step (5) to obtain the n-hour time-keeping precision of the tested device 400.
N of the present invention is specifically 72 and the time trigger interval is specifically 2ms.
The whole trigger time of step (6) of the present invention is, for example, 4 months, 10 days, 14:40,n is 72 hours, when the time reaches 14:40 close one of the open channels.
According to the automatic testing method for time setting, timekeeping and SOE resolution of the distribution automation device, the direct-current power supply and the SOE tester 100 are integrated together, the method can be adapted to tested devices with all voltage levels, and through the SOE tester 100, each testing device which is independent of each other is set up into a controlled system. By means of output of the SOE tester 100, automatic reading of event time scales sent by the tested device 400, automatic calculation of test results and the like, a large amount of manpower and material resources are saved. The triggering interval of the SOE tester 100 can be customized between 1ms and 99ms, and the triggering modes such as single triggering, multiple triggering, telesignaling avalanche and the like are supported.
Example 2.
The method for automatically testing time synchronization, time keeping and SOE resolution of the distribution automation device in embodiment 1.
The measured device 400 of the embodiment has the indexes of an open voltage level DC24V (external connection), an SOE event record not more than 2ms, a GPS time synchronization precision not more than 10ms and a 72h time synchronization precision not more than 2s.
Step (1), connecting the input 1 and the input 2 of the tested device 400 to the output 1 and the output 2 of the SOE tester 100 respectively, outputting DC24V by a direct current power supply, connecting the SOE tester 100 to a GPS antenna,
step (2), the SOE tester 100 and the tested device 400 are subjected to time synchronization respectively, and the tested device 400 closes the time synchronization instruction after time synchronization is successful;
step (3), selecting an integral point trigger in the upper computer 300, issuing an instruction to the SOE tester 100, specifically triggering at 00.000;
step (4), the device under test 400 2022.04.0514 receives the event of opening 1 closing, 2022.4.5.002 receives the event of opening 2 closing, and sends the event to the upper computer 300, because the device under test 400 has a certain time synchronization accuracy, the time scale of the event sent to the upper computer 300 will be advanced or delayed, but the device under test 400 only recognizes that the difference between opening 1 and opening 2 is 2ms, which indicates that the SOE event record of the device under test 400 is not greater than 2ms;
step (5), triggering and recording an event of the device under test 400, and then sending the event triggering time to the upper computer 300, so as to obtain that the SOE resolution of the device under test 400 and the opening 1 time scale of the first time-alignment precision hypothesis sent to the upper computer 300 are 2022.04.0514, and compared with the set triggering time 2022.04.05 00, the first time-alignment precision of the device under test 400 is lagged by 7ms;
step (6), the device under test 400 is powered off for 72h and then powered on again, the SOE tester 100 triggers an open 1 event at 2022.04.08.14, 00.000, and assuming that the open 1 time scale sent up to the host computer 300 at this time is 2022.4.8.14, 00.557, the second time-alignment accuracy of the test is delayed by 557ms, and since the time-alignment delay of the device under test 400 itself is 7ms, and is subtracted from the first time-alignment accuracy of step (5), the time-alignment accuracy of the device under test 40072h can be found to be 550ms.
According to the automatic testing method for time setting, timekeeping and SOE resolution of the distribution automation device, the direct-current power supply and the SOE tester 100 are integrated together, the method can be adapted to tested devices with all voltage levels, and through the SOE tester 100, each testing device which is independent of each other is set up into a controlled system. A large amount of manpower and material resources are saved through the output of the SOE tester 100, the automatic reading of the event time scale sent by the tested device 400, the automatic calculation of the test result and other means. The triggering interval of the SOE tester 100 can be customized between 1ms and 99ms, and the triggering modes such as single triggering, multiple triggering, remote signaling avalanche and the like are supported.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims (10)

1. A time setting, time keeping and SOE resolution automatic test method for a distribution automation device is characterized in that: the direct current testing device comprises an SOE tester, a direct current power supply module and an upper computer, wherein the direct current power supply module is respectively connected with the SOE tester and a tested device, and the upper computer is respectively connected with the SOE tester and the tested device;
the SOE tester is used for sequentially closing the channels according to the commands issued by the upper computer;
the direct current power supply module is used for outputting corresponding voltage according to the on-voltage level of the tested device;
and the upper computer is used for issuing an instruction to the SOE tester, acquiring the event triggering time of the recorded event of the tested device, and analyzing the event time scale so as to obtain the SOE resolution, the time synchronization precision and the time keeping precision.
2. The automatic testing method for time synchronization, time keeping and SOE resolution of the distribution automation device according to claim 1, characterized in that: the SOE tester is provided with a plurality of open channels, each open channel is correspondingly provided with an open positive and an open negative,
the direct current power supply module is respectively connected with the positive opening of at least two opening channels, and the opening channels are defined as working opening channels;
the output negative of the working output channel is connected with the input of the tested device in a one-to-one correspondence manner, and the input negative of the tested device is connected with the direct-current power supply module.
3. The automatic testing method for time synchronization, time keeping and SOE resolution of the distribution automation device according to claim 2, characterized in that: the issued instruction is a time trigger interval and an integer trigger time.
4. The automatic testing method for time synchronization, time keeping and SOE resolution of the distribution automation device according to claim 3, characterized in that: the time trigger interval is 1 ms-99 ms.
5. The distribution automation device time synchronization, time keeping and SOE resolution automatic test method according to claim 4, characterized by comprising the steps of:
step (1), setting the level of the on-voltage of a tested device in a direct current power supply module, and connecting an SOE tester with an antenna;
step (2), respectively carrying out time synchronization processing on the SOE tester and the tested device;
step (3), setting an integral point trigger time and a time trigger interval in the upper computer, and issuing an instruction to the SOE tester;
step (4), the SOE tester closes a plurality of open channels in sequence on time according to the time trigger interval and the integral point trigger time in the issued command;
triggering and recording events of the device to be tested, and then sending the event triggering time to an upper computer to obtain the SOE resolution and the first time alignment precision of the device to be tested;
and (6) powering off the tested device for n hours, then powering on, closing an open channel at the integral point by the SOE tester according to the integral point trigger time in the step (4), triggering and recording the event of the tested device, and then sending the event trigger time to the upper computer to obtain the n-hour time-keeping precision of the tested device.
6. The distribution automation device time synchronization, time keeping and SOE resolution automatic test method according to claim 5, characterized in that: and (4) closing one opening channel when the specific SOE tester reaches the integral point trigger time, and then closing other opening channels in sequence on time according to the time trigger interval.
7. The automatic testing method for time synchronization, time keeping and SOE resolution of the distribution automation device according to claim 6, characterized in that: and (5) specifically triggering and recording an event of the device to be detected, then sending the event triggering time to an upper computer, analyzing the event time scale by the upper computer, and comparing the event time scale with the integral point triggering time to obtain the SOE resolution and the first time alignment precision of the device to be detected.
8. The distribution automation device time synchronization, time keeping and SOE resolution automatic test method according to claim 7, characterized in that: and (6) specifically, powering off the tested device for n hours and then powering on, closing an open channel at the integral point by the SOE tester according to the integral point trigger time in the step (4), triggering and recording the event of the tested device, then uploading the event trigger time to an upper computer, analyzing the time scale of the event by the upper computer to obtain a second time-alignment precision, and subtracting the second time-alignment precision from the first time-alignment precision in the step (5) to obtain the n-hour time-keeping precision of the tested device.
9. The distribution automation device time synchronization, time keeping and SOE resolution automatic test method according to claim 8, characterized in that: and n is 72.
10. The distribution automation device time synchronization, time keeping and SOE resolution automatic test method according to claim 9, characterized in that: the time trigger interval is 2ms.
CN202210866504.6A 2022-07-22 2022-07-22 Automatic time setting, time keeping and SOE resolution testing method for distribution automation device Pending CN115236440A (en)

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CN202210866504.6A CN115236440A (en) 2022-07-22 2022-07-22 Automatic time setting, time keeping and SOE resolution testing method for distribution automation device

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Application Number Priority Date Filing Date Title
CN202210866504.6A CN115236440A (en) 2022-07-22 2022-07-22 Automatic time setting, time keeping and SOE resolution testing method for distribution automation device

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CN115236440A true CN115236440A (en) 2022-10-25

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