CN112345846A - Wave recording triggering method and system used in relay protection device test based on fixed value - Google Patents
Wave recording triggering method and system used in relay protection device test based on fixed value Download PDFInfo
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- CN112345846A CN112345846A CN202011035030.8A CN202011035030A CN112345846A CN 112345846 A CN112345846 A CN 112345846A CN 202011035030 A CN202011035030 A CN 202011035030A CN 112345846 A CN112345846 A CN 112345846A
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Abstract
The invention discloses a wave recording triggering method used in a relay protection device test based on a fixed value, which comprises the following steps: s1: setting a millisecond fixed value and a millisecond variable in a relay protection device; s2: setting a trigger-allowed wave recording mark in the relay protection device; s3: establishing communication connection between the relay protection device and a dynamic simulation test platform, and updating the millisecond fixed value by timing through the dynamic simulation test platform; s4: calculating time judgment difference values and updating the wave recording allowing mark according to the millisecond fixed value and the millisecond variable; s5: judging whether to trigger wave recording according to the time judgment difference value and the wave recording permission mark; s6: if yes, the relay protection device triggers wave recording. The invention triggers wave recording at the time specified by the millisecond fixed value, and the invention does not use the analog quantity or the input quantity of the device, thereby having no influence on the protection logic of the device.
Description
Technical Field
The invention relates to the technical field of relay protection, in particular to a recording triggering method and system used in a relay protection device test based on a fixed value.
Background
The power grid enterprise manages substations in which numerous relay protection devices are operated, which are supplied by a very large number of suppliers. In order to facilitate management and operation and maintenance, power grid enterprises have standardized design requirements on external characteristics of the relay protection device. The relay protection devices provided by various suppliers must be consistent in external characteristics such as analog quantity, opening and closing, protection logic and information output.
The relay protection devices developed and developed by various suppliers according to the requirements of standardized design can be applied to the transformer substation only after the certification of a power grid enterprise is obtained. The main method for power grid enterprises to authenticate the relay protection devices provided by suppliers is to intensively perform a dynamic simulation test, a static simulation test and an electromagnetic capacitance test. The dynamic simulation test is a test for checking the most important function of the protection logic of the relay protection device, and is used for checking whether the action behavior of the relay protection device is correct or not by simulating various faults. And whether the action behavior of the protection is correct or not is analyzed through the recording of the device.
The invention discloses an intelligent relay protection fault recording method with publication number CN108445321A of No. 03 month 19 in 2018.A data compression module is adopted, and a front-and-back waveform differential compression algorithm based on waveform periodicity characteristics is adopted, so that the intelligent relay protection fault recording method has the characteristics of low power consumption, small calculated amount and high compression ratio, has a good waveform data compression effect, and greatly reduces the manufacturing cost of a relay protection fault recording and playback system; according to the fault wave recording method and device, on the basis of fault wave recording data, modeling is carried out on primary equipment of a power system, a primary equipment model is associated with a wave recording channel in a fault wave recording data file to obtain a wave recording analysis model, and when a fault occurs, wave alignment of multi-wave recording data can be carried out according to sudden change characteristics of voltage and current.
In the design of the existing relay protection device, the wave recording of the device is generally triggered by protection starting. The device triggers the device to record waves when the protection is started.
In the dynamic simulation test process, under certain test conditions, the relay protection devices provided by one part of suppliers are protected to start, and the relay protection devices provided by the other part of suppliers are not protected to start. For the relay protection device without protection starting, because the device does not record waves, the action behavior of protection can be analyzed without recording wave data.
In order to solve the problem, before formal test, the specified analog quantity is loaded in the specified analog quantity channel or the specified input quantity channel is fixedly set for a period of time to tell the device the test time, the device analyzes the specified analog quantity channel or the input quantity channel, and then wave recording is triggered at the test time obtained by analysis, so that the device can trigger wave recording in each test. The analog quantities or the opening quantities used are, after all, the analog quantities and the opening quantities used by the device, which are involved in the judgment of the protection logic. The particular analog or set open to load used to tell the device to test time may have some effect on the protection logic.
Disclosure of Invention
The invention mainly aims to provide a wave recording triggering method used in a relay protection device test based on a fixed value, which triggers the device to record waves in each dynamic simulation test on the premise of not influencing the protection logic.
The invention further aims to provide a wave recording triggering system used in the relay protection device test based on the fixed value.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a wave recording triggering method used in a relay protection device test based on a fixed value comprises the following steps:
s1: setting a millisecond fixed value, a millisecond variable and a trigger-allowed wave recording mark in a relay protection device;
s2: establishing communication connection between the relay protection device and a dynamic simulation test platform, and updating the millisecond fixed value by timing through the dynamic simulation test platform;
s3: calculating time judgment difference values and updating the wave recording allowing mark according to the millisecond fixed value and the millisecond variable;
s4: judging whether to trigger wave recording according to the time judgment difference value and the wave recording permission mark;
s5: if yes, the relay protection device triggers wave recording, and if not, the step S2 is returned.
Preferably, the millisecond set value is set to 0 in the relay protection device in step S1.
Preferably, in step S1, the millisecond variable is set to 0 in the relay protection device.
Preferably, in step S1, a trigger-allowed recording flag is set to 0 in the relay protection device.
Preferably, the ms fixed value is updated in step S2, specifically:
the time difference of the time of loading test analog quantity and the time of opening quantity prepared by the dynamic simulation test platform relative to 0 minute, 0 second and 0 millisecond on the day is X millisecond, and before the loading test analog quantity and the opening quantity, the millisecond fixed value of the relay protection device is updated to be X in a communication mode.
Preferably, in step S3, the time judgment difference and the update of the trigger-allowed recording flag are calculated according to the millisecond fixed value and the millisecond variable, specifically:
s3.1: comparing whether the millisecond variable and the millisecond fixed value are the same or not, if not, updating the millisecond variable into the value of the millisecond fixed value, and simultaneously updating the trigger wave recording mark into 1;
s3.2: calculating a time difference t1 of the time of the relay protection device accurate to millisecond relative to 0 minute, 0 second and 0 millisecond at the time of the day 0;
s3.3: the absolute value t2 of the difference between t1 and the millisecond fixed value is calculated, and t2 is the time judgment difference.
Preferably, in step S4, determining whether to trigger wave recording according to the time determination difference and the trigger-allowed wave recording flag, specifically:
judging the size of t2, and if t2 is less than the threshold and the trigger recording flag is 1, judging that the recording is triggered.
Preferably, in step S4, after the recording is determined to be triggered, the trigger-allowed recording flag is set to 0.
Preferably, the threshold is 5 ms.
A wave recording triggering system used in a relay protection device test based on a fixed value comprises:
the setting module is used for setting a millisecond fixed value, a millisecond variable and a trigger-allowed wave recording mark in the relay protection device;
the updating module establishes communication connection between the relay protection device and the dynamic simulation test platform, and updates the millisecond fixed value after time correction is carried out through the dynamic simulation test platform;
the calculation updating module is used for calculating time judgment difference values and updating the trigger-allowed wave recording mark according to the millisecond fixed value and the millisecond variable;
the judging module judges whether to trigger wave recording according to the time judgment difference value and the trigger-allowed wave recording mark; if yes, the relay protection device triggers wave recording.
Compared with the prior art, the technical scheme of the invention has the beneficial effects that:
by the method, when the dynamic simulation test is carried out on the relay protection device, the fixed value called the millisecond fixed value is used for informing the device of the test time. The device triggers recording at a time specified by the millisecond fix. The problem of do not have among the prior art under the circumstances that the protection starts, the device can't trigger the record ripples to there is not record ripples data can analysis protection action is solved. Moreover, the method does not use the analog quantity or the input quantity of the device, so that the protection logic of the device is not influenced.
Drawings
FIG. 1 is a schematic flow chart of the method of the present invention.
Fig. 2 is a schematic flow chart of calculating the time judgment difference and updating the trigger-allowed recording flag according to the present invention.
Fig. 3 is a schematic diagram of the system structure of the present invention.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent;
for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product;
it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The technical solution of the present invention is further described below with reference to the accompanying drawings and examples.
Example 1
The embodiment provides a wave recording triggering method used in a relay protection device test based on a fixed value, as shown in fig. 1, including the following steps:
s1: setting a millisecond fixed value, a millisecond variable and a trigger-allowed wave recording mark in a relay protection device;
s2: establishing communication connection between the relay protection device and a dynamic simulation test platform, and updating the millisecond fixed value by timing through the dynamic simulation test platform;
s3: calculating time judgment difference values and updating the wave recording allowing mark according to the millisecond fixed value and the millisecond variable;
s4: judging whether to trigger wave recording according to the time judgment difference value and the wave recording permission mark;
s5: if yes, the relay protection device triggers wave recording, and if not, the step S2 is returned.
In step S1, the millisecond setting value is set to 0 in the relay protection device.
In step S1, the millisecond variable is set to 0 in the relay protection device.
In step S1, a trigger-allowed recording flag is set to 0 in the relay protection device.
In step S2, updating the millisecond fixed value specifically includes:
the time difference of the time of loading test analog quantity and the time of opening quantity prepared by the dynamic simulation test platform relative to 0 minute, 0 second and 0 millisecond on the day is X millisecond, and before the loading test analog quantity and the opening quantity, the millisecond fixed value of the relay protection device is updated to be X in a communication mode.
In step S3, a time judgment difference is calculated according to the millisecond fixed value and the millisecond variable, and the trigger-allowed recording flag is updated, as shown in fig. 2, specifically:
s3.1: comparing whether the millisecond variable and the millisecond fixed value are the same or not, if not, updating the millisecond variable into the value of the millisecond fixed value, and simultaneously updating the trigger wave recording mark into 1;
s3.2: calculating a time difference t1 of the time of the relay protection device accurate to millisecond relative to 0 minute, 0 second and 0 millisecond at the time of the day 0;
s3.3: the absolute value t2 of the difference between t1 and the millisecond fixed value is calculated, and t2 is the time judgment difference.
In step S4, whether to trigger wave recording is determined according to the time determination difference and the trigger-allowed wave recording flag, which specifically includes:
judging the size of t2, and if t2 is less than the threshold and the trigger recording flag is 1, judging that the recording is triggered.
In step S4, after it is determined that recording is triggered, the trigger-allowed recording flag is set to 0.
The threshold is 5 ms.
Example 2
The embodiment provides a wave recording trigger system used in a relay protection device test based on a fixed value, as shown in fig. 3, including:
the setting module is used for setting a millisecond fixed value, a millisecond variable and a trigger-allowed wave recording mark in the relay protection device;
the updating module establishes communication connection between the relay protection device and the dynamic simulation test platform, and updates the millisecond fixed value after time correction is carried out through the dynamic simulation test platform;
the calculation updating module is used for calculating time judgment difference values and updating the trigger-allowed wave recording mark according to the millisecond fixed value and the millisecond variable;
the judging module judges whether to trigger wave recording according to the time judgment difference value and the trigger-allowed wave recording mark; if yes, the relay protection device triggers wave recording.
The same or similar reference numerals correspond to the same or similar parts;
the terms describing positional relationships in the drawings are for illustrative purposes only and are not to be construed as limiting the patent;
it should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A wave recording triggering method used in a relay protection device test based on a fixed value is characterized by comprising the following steps:
s1: setting a millisecond fixed value, a millisecond variable and a trigger-allowed wave recording mark in a relay protection device;
s2: establishing communication connection between the relay protection device and a dynamic simulation test platform, and updating the millisecond fixed value by timing through the dynamic simulation test platform;
s3: calculating time judgment difference values and updating the wave recording allowing mark according to the millisecond fixed value and the millisecond variable;
s4: judging whether to trigger wave recording according to the time judgment difference value and the wave recording permission mark;
s5: if yes, the relay protection device triggers wave recording, and if not, the step S2 is returned.
2. The method for triggering wave recording in a relay protection device test based on a fixed value of claim 1, wherein in step S1, a millisecond fixed value is set to 0 in the relay protection device.
3. The method for triggering wave recording in a relay protection device test based on a fixed value of claim 1, wherein in step S1, a millisecond variable is set to 0 in the relay protection device.
4. The method for triggering wave recording used in the relay protection device test based on the fixed value of claim 1, wherein in step S1, the wave recording permission flag is set to 0.
5. The wave recording triggering method used in the relay protection device test based on the fixed value as claimed in claim 4, wherein the millisecond fixed value is updated in step S2, specifically:
the time difference of the time of loading test analog quantity and the time of opening quantity prepared by the dynamic simulation test platform relative to 0 minute, 0 second and 0 millisecond on the day is X millisecond, and before the loading test analog quantity and the opening quantity, the millisecond fixed value of the relay protection device is updated to be X in a communication mode.
6. The wave recording triggering method used in the relay protection device test based on the fixed value as claimed in claim 5, wherein in step S3, the time judgment difference and the update of the trigger-allowed wave recording flag are calculated according to the millisecond fixed value and the millisecond variable, specifically:
s3.1: comparing whether the millisecond variable and the millisecond fixed value are the same or not, if not, updating the millisecond variable into the value of the millisecond fixed value, and simultaneously updating the trigger wave recording mark into 1;
s3.2: calculating a time difference t1 of the time of the relay protection device accurate to millisecond relative to 0 minute, 0 second and 0 millisecond at the time of the day 0;
s3.3: the absolute value t2 of the difference between t1 and the millisecond fixed value is calculated, and t2 is the time judgment difference.
7. The wave recording triggering method used in the relay protection device test based on the fixed value as claimed in claim 6, wherein in step S4, whether to trigger wave recording is determined according to the time determination difference and the wave recording permission flag, specifically:
judging the size of t2, and if t2 is less than the threshold and the trigger recording flag is 1, judging that the recording is triggered.
8. The method for triggering wave recording used in the relay protection device test based on the fixed value of claim 7, wherein in step S4, after the wave recording is determined to be triggered, the trigger-allowed wave recording flag is set to 0.
9. The method for triggering wave recording in a relay protection device test based on fixed value as claimed in claim 8, wherein the threshold is 5 ms.
10. The utility model provides a record ripples trigger system that uses in relay protection device test based on definite value which characterized in that includes:
the setting module is used for setting a millisecond fixed value, a millisecond variable and a trigger-allowed wave recording mark in the relay protection device;
the updating module establishes communication connection between the relay protection device and the dynamic simulation test platform, and updates the millisecond fixed value after time correction is carried out through the dynamic simulation test platform;
the calculation updating module is used for calculating time judgment difference values and updating the trigger-allowed wave recording mark according to the millisecond fixed value and the millisecond variable;
the judging module judges whether to trigger wave recording according to the time judgment difference value and the trigger-allowed wave recording mark; if yes, the relay protection device triggers wave recording.
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