CN113834987A - Converter fault recording method and converter - Google Patents
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Abstract
The application discloses a converter fault recording method and a converter, wherein the method is executed by the converter, and the method comprises the following steps: recording electric quantity data at each moment in a first cache of the converter; determining the fault time of the converter; determining a target time interval according to the fault moment, and determining fault related data according to the electric quantity data in the target time interval in the first cache; and generating a fault waveform of the current transformer according to the fault related data. On the premise of not adding new equipment and new software, the method and the device utilize the hardware resources of the converter, realize the wave recording function of the electric appliance data related to the fault of the converter, and obviously reduce the cost of fault wave recording; because an additional fault recording device is not needed, the overall cost of the converter is greatly reduced; the method is simple and convenient, and provides a reliable foundation for fault analysis of the converter.
Description
Technical Field
The application relates to the technical field of converter wave recording, in particular to a converter fault wave recording method and a converter.
Background
The fault recording means that when the converter fails, the change conditions of various electrical quantities in a period of time before and after the failure are automatically and accurately recorded. Through the analysis and comparison of the electric quantities, the method has important effects on analyzing and processing faults, judging whether protection acts correctly or not and improving the safe operation level of equipment.
When a Power Conversion System (PCS) module is abnormal, such as a Power grid abnormality and a module fault, the fault needs to be eliminated, and the operation of the device is recovered.
In the prior art, special equipment and software are generally required for fault recording, such as a transient fault recording device (base fault oscillograph device) of a converter station, and this method has high time precision requirement, large cache data, high requirement on hardware, and needs to additionally add a device in a converter, thereby increasing the overall cost of the converter.
Disclosure of Invention
The embodiment of the application provides a converter fault recording method and a converter, wherein the method is executed by the converter, under the condition that no new equipment and new software are added, inherent resources of the converter are effectively utilized, and recording of electric quantity data before and after a fault is realized, so that the defects of the prior art are overcome or partially overcome.
In a first aspect, a converter fault recording method is provided, which is performed by a converter, and includes:
recording electric quantity data at each moment in a first cache of the converter;
determining the fault time of the converter;
determining a target time interval according to the fault moment, and determining fault related data according to the electric quantity data in the target time interval in the first cache;
and generating a fault waveform of the converter according to the fault related data.
Optionally, in the method, determining a fault time of the converter includes:
the method comprises the steps of detecting the state of a converter by a preset beat, and if the converter is in a non-shutdown state and has no fault in the last beat, and the converter is in a shutdown state and has a fault in the current beat, taking a timestamp corresponding to the current beat as a fault moment when the converter breaks down.
Optionally, the method further includes:
acquiring preset configuration parameters of fault recording, wherein the preset configuration parameters comprise: presetting a wave recording frequency, presetting a wave recording length and specifying a record quantity;
determining the target time interval according to the fault time comprises: determining a target time interval according to the fault moment and the preset wave recording length;
determining fault-related data from the electrical quantity data in the first buffer during the target time interval comprises:
determining the original electric quantity data of each specified record quantity in a target time interval from the electric quantity data at each moment; and respectively sampling the original electrical quantity data of each specified record quantity according to the preset wave recording frequency to obtain fault related data of each specified record quantity.
Optionally, in the method, determining the target time interval according to the fault time and the preset recording length includes:
determining a first time length of a preset percentage of a preset wave recording length and a second time length of the preset wave recording length minus the first time length;
determining a first time earlier than the fault time by a first time length; and a second time later than the fault time by a second duration;
and determining a target time interval according to the first time and the second time.
Optionally, the method further includes:
providing a configuration page, wherein the configuration page comprises a plurality of fault recording configuration items;
and responding to the configuration instruction of each fault recording configuration item, and acquiring preset configuration parameters of fault recording through a configuration page.
Optionally, in the above method, the plurality of fault recording configuration items include: recording quantity configuration items, recording frequency configuration items and recording length configuration items;
the record quantity configuration item comprises a plurality of sub-configuration items, and the sub-configuration items comprise at least one of the following items: direct current voltage, direct current, alternating current voltage of each phase and alternating current of each phase;
optional values in the wave recording frequency configuration items are integral multiples of a reference sampling period;
the selectable values in the wave recording length configuration items are configured according to the hardware of the current transformer.
Optionally, in the above method, the fault-related data includes a plurality of fault-related data with specified record quantity, and the first buffer is a buffer of a display of the converter;
generating a converter fault waveform from fault-related data includes:
drawing the fault waveform of the current transformer of each specified record quantity according to the fault related data of each specified record quantity;
and displaying the fault waveform of the current transformer of each specified record quantity on a display.
Optionally, in the method, the fault-related data includes a plurality of fault-related data with specified record quantity, and the first cache is a memory chip of the converter;
generating a converter fault waveform from fault-related data includes:
arranging the fault related data of each specified record quantity into a fault recording data file;
and responding to the wave recording data export instruction, and outputting the fault wave recording data file to the removable storage device.
In a second aspect, a current transformer is provided, the current transformer comprising: the processor is connected with the display, and the display is provided with a first cache;
the processor is used for recording the electric quantity data at each moment in the first cache; the fault time of the converter is determined; determining a target time interval according to the fault moment, and determining fault related data according to the electric quantity data in the target time interval in the first cache; generating a fault waveform of the converter according to the fault related data; displaying the fault waveform of the current transformer on a display;
and the display is used for displaying the fault waveform of the current transformer.
Optionally, in the above current transformer, the current transformer includes: the system comprises a processor, a first cache and a display, wherein the display is provided with a second cache; the processor is respectively connected with the display and the first cache;
the processor is used for recording the electric quantity data at each moment in the first cache; the fault time of the converter is determined; determining a target time interval according to the fault moment, and determining fault related data according to the electric quantity data in the target time interval in the first cache; generating a converter fault waveform according to the fault related data and writing the converter fault waveform into a second cache; arranging the fault related data into a fault recording data file; responding to a wave recording data export instruction, and outputting a fault wave recording data file to a movable storage device;
and the display is used for displaying the fault waveform of the current transformer according to the storage content of the second buffer.
The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects:
according to the method, original hardware resources of the converter are utilized, the electric quantity data at each moment are recorded in the first cache of the converter, the electric quantity data in the target time interval in the first cache are cached and sorted according to the fault moment of the converter in the electric quantity data at each moment to determine fault related data, and the fault waveform of the converter is generated according to the fault related data, so that a simple fault recording method is realized. On the premise of not adding new equipment and new software, the method and the device utilize the hardware resources of the converter, realize the wave recording function of the electric appliance data related to the fault of the converter, and obviously reduce the cost of fault wave recording; because an additional fault recording device is not needed, the overall cost of the converter is greatly reduced; the method is simple and convenient, and provides a reliable foundation for fault analysis of the converter.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 shows a schematic representation of a current transformer according to the prior art;
fig. 2 shows a schematic flow diagram of a converter fault recording method according to an embodiment of the present application;
FIG. 3 illustrates an output interface of a display of a current transformer according to an embodiment of the present application;
FIG. 4 illustrates a schematic diagram of a fault recording data file exported using a removable storage device according to one embodiment of the present application;
fig. 5 shows a schematic flow diagram of a converter fault recording method according to another embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.
Fig. 1 shows a schematic diagram of a converter according to the prior art, and as can be seen from fig. 1, the converter according to the prior art has a display, a buffer and a processor, in some converters, the buffer may be disposed in the display, as shown in fig. 1a, the converter 100 according to the prior art includes a display 110 and a processor 120, the display 110 is connected to the processor 120, wherein the display 110 has a first buffer 130. In other converters, the buffer may be arranged independently of the display and the processor, as shown in fig. 1b, which is arranged independently of the display, in fig. 1b, which shows a converter 100 according to the prior art, the converter 100 comprises a display 110, a processor 120 and a buffer, here denoted as a first buffer 130; the display 110 itself may also be provided with a buffer, and the buffer of the display 110 is referred to as the second buffer 111 here.
Fig. 2 is a schematic flow chart of a converter fault recording method according to an embodiment of the present application, and as can be seen from fig. 2, the present application at least includes steps S210 to S240:
step S210: and recording the electric quantity data at each moment in a first buffer of the converter.
The method can be implemented by adopting, but not limited to, two converters shown in fig. 1, both of which are converters in the prior art, and the method does not need to adjust the hardware of the converters and the relationship thereof.
The method comprises the steps that electric quantity data at each moment are recorded in a first buffer of the converter, and the recording of the electric quantity data is necessary whether a fault occurs or not in the operation process of the converter, so that the step is carried out all the time, and when the fault does not occur, the converter can record the electric quantity data of the converter all the time according to the time sequence relation.
The electrical quantity data includes, but is not limited to, a direct voltage, a direct current, an alternating voltage of each phase including, but not limited to, a network side phase voltage U, and an alternating current of each phaseab、Ubc、UcaThe AC current of each phase includes but is not limited to the net side phase current Ia、Ib、Ic。
Each recorded time can be determined according to a reference sampling calculation period, for example, the reference sampling calculation period is 100 μ s, that is, the electric quantity data is recorded every 100 μ s from the starting operation time of the converter.
Step S220: and determining the fault moment of the converter.
When the fault of the converter is recorded, important core data are concentrated in a period of time before and after the fault of the converter, the electric quantity data in the period of time are analyzed, and the important function of analyzing and removing the fault is played, so that the time when the fault of the converter occurs needs to be determined as the fault time of the converter.
The method includes that whether the converter fails or not can be referred to the prior art, specifically, the state of the converter is detected by preset times, if the converter is in a non-shutdown state and has no fault for the last time, and the converter is in a shutdown state and has a fault for the current time, under the condition, the fault mark position of the converter is changed from 0 to 1, at the moment, the converter is considered to be failed, and further, a timestamp corresponding to the current time is used as the fault moment when the converter fails.
The number of beats is understood to be a time period, and assuming that 10 μ s is a preset number of beats, the current transformer state is detected once every 10 μ s is one beat from the beginning of the current transformer operation, namely every 10 μ s begins or ends. Taking the example that the current transformer state is detected once at the beginning of each beat, if the current transformer is determined to be in a non-shutdown state and have no fault in the last 10 μ s detection process, and if the current transformer is determined to be in a shutdown state and have a fault in the current 10 μ s detection process, the current transformer is determined to have a fault, and the time corresponding to the end of the current 10 μ s is taken as the fault time of the current transformer. The specific form of time may be, but is not limited to, a timestamp.
Step S230: and determining a target time interval according to the fault moment, and determining fault related data according to the electric quantity data in the target time interval in the first cache.
A target time interval is then determined based on the time of the fault, the target time interval typically including a period of time before the time of the fault occurred and a period of time after the fault occurred. In some embodiments of the present application, a default value, such as 128ms, may be set for the target time interval, and the target time interval is used to sample the electrical quantity data each time; in other embodiments of the present application, the determination of the target time interval may be determined according to the requirements of the working conditions, if more detailed data with long duration are required, the target time interval may be set longer, and if only data within a short time before and after the occurrence of the fault is required, the target time interval may be set shorter.
And after the target time interval is determined, acquiring fault related data of the converter from the first buffer. Specifically, the electric quantity data corresponding to the target time interval is read from the electric quantity data at each time in the first cache, and the electric quantity data corresponding to the target time interval is used as fault related data of the converter in fault.
Step S240: and generating a fault waveform of the converter according to the fault related data.
And finally, generating a converter fault waveform according to fault related data of the converter with faults, specifically, generating the converter fault waveform according to the values of a horizontal coordinate (time) and a vertical coordinate (electrical quantity). The fault-related data of the fault is usually a plurality of recorded quantities, and the fault waveform of the converter is generated for different recorded quantities respectively.
If the present application is executed with the converter 100 shown in fig. 1a, the recording of the electrical quantity data at each time in the first buffer 130 of the display 110 may be executed by the processor 120; the fault time of the converter is determined; determining a target time interval according to the fault moment, and determining fault-related data according to the electrical quantity data in the target time interval in the first buffer 130 of the display 110; generating a fault waveform of the converter according to the fault related data; and displays the converter fault waveform on display 110. Specifically, the processor 120 draws the converter fault waveform for each specified record amount according to the fault-related data for each specified record amount, and displays the converter fault waveform for each specified record amount on the display 110.
As shown in fig. 3, fig. 3 shows an output interface of the display 110 of the converter 100 according to an embodiment of the present application, and as can be seen from fig. 3, a worker can visually observe a converter fault waveform generated according to fault-related data in the output interface, and can select different entries in the output interface to observe a fault waveform of a target entry to perform fault analysis on the converter fault.
If the present application is executed with the converter shown in fig. 1b, the processor 120 may record the electrical quantity data at each time in the first buffer memory 130; the fault time of the converter is determined; determining a target time interval according to the fault moment, and determining fault-related data according to the electric quantity data in the target time interval in the first cache 130; arranging the fault related data into a fault recording data file; and responding to the wave recording data export instruction, and outputting the fault wave recording data file to the removable storage device. At this point, the staff can use the removable storage device to export a copy of the fault-related data from the first buffer of the converter. As shown in fig. 4, fig. 4 is a schematic diagram illustrating a fault recording data file derived by using a removable storage device according to an embodiment of the present application, and as can be seen from fig. 4, the fault recording data file may be, but is not limited to, present in the form of an XLS worksheet, and each recorded amount may be recorded in a different worksheet for the convenience of staff to refer.
When the present application is implemented with the converter shown in fig. 1b, the processor 120 may further generate a converter fault waveform according to the fault-related data and write the converter fault waveform into the second buffer of the display 110, and display the converter fault waveform through the display 110.
As can be seen from the method shown in fig. 2, according to the method, original hardware resources of the converter are utilized, the electric quantity data at each moment are recorded in the first cache of the converter, in the electric quantity data at each moment, the electric quantity data in the target time interval in the first cache are cached and sorted according to the fault moment of the converter to determine fault-related data, and a fault waveform of the converter is generated according to the fault-related data, so that a simplified fault recording method is realized. On the premise of not adding new equipment and new software, the method and the device utilize the hardware resources of the converter, realize the wave recording function of the electric appliance data related to the fault of the converter, and obviously reduce the cost of fault wave recording; because an additional fault recording device is not needed, the overall cost of the converter is greatly reduced; the method is simple and convenient, and provides a reliable foundation for fault analysis of the converter.
In some embodiments of the present application, the method further comprises: acquiring preset configuration parameters of fault recording, wherein the preset configuration parameters comprise: presetting wave recording frequency, presetting wave recording length and designating record quantity. The working personnel can set some parameters of fault recording, including but not limited to the recording frequency, the recording length and the recording amount, and after the converter acquires the preset configuration parameters, the converter carries out fault recording according to the configuration parameters; and under the condition that the configuration parameters are not specified by the working personnel, fault recording can be carried out on the converter according to the original default parameters.
In some embodiments of the present application, determining the target time interval according to the fault time comprises: and determining a target time interval according to the fault moment and the preset wave recording length. The target time interval generally includes a period of time before the failure time and a period of time after the failure time, the preset recording length may be divided into two parts as required, which are respectively recorded as a first time and a second time, the start time of the target time interval may be a first time earlier than the first time of the failure time, the end time of the target time interval may be a second time later than the second time of the failure time, and a time interval formed by the first time and the second time is taken as the target time interval. More specifically, a first duration of a preset percentage of the preset recording length and a second duration of the preset recording length minus the first duration can be determined; determining a first time earlier than a first duration of a fault time; and a second time later than the fault time by a second duration; and determining a target time interval according to the first time and the second time. For the preset percentage, the preset percentage may be determined according to the operating condition requirement, in some embodiments of the present application, the preset percentage may be, but is not limited to, 50%, assuming that the fault time of the converter is 12: 00: 00, if the preset recording length is 256ms, the target time interval is 12: 00: 128ms before 00 to 2: 00: 128ms after 00.
In some embodiments of the present application, determining the fault-related data from the electrical quantity data in the first buffer for the target time interval comprises: determining the original electric quantity data of each specified record quantity in a target time interval from the electric quantity data at each moment; and respectively sampling the original electrical quantity data of each specified record quantity according to the preset wave recording frequency to obtain fault related data of each specified record quantity.
The electrical quantity data generally comprises a plurality of recording quantities of electrical quantity data, and the original electrical quantity data of each specified recording quantity in a target time interval is determined according to the target time interval.
And then, according to the preset wave recording frequency and the time in the original electrical quantity data, respectively sampling the original electrical quantity data of each specified record quantity to obtain fault related data of each specified record quantity.
The electrical quantity data at each time is usually collected by adopting a reference sampling period, and the reciprocal of the preset recording frequency, that is, the preset recording period is usually greater than or equal to the reference sampling period, that is, the data density of the fault-related data is usually less than or equal to the density of the electrical quantity data of the recorded quantity. In some embodiments of the present application, in order to make the sampling time point correspond to a time point in the original electrical quantity data, the inverse of the recording frequency is an integer multiple of the reference sampling period. If the recording frequency is 10 times of the reference sampling period, 100 pieces of data exist in the target time interval in the original electrical quantity data, and 10 pieces of data exist in the target time interval in the fault-related data, because the fault analysis process can be implemented without particularly high precision, in order to provide the recording efficiency and reduce the hardware load, the recording frequency greater than the reference sampling period is adopted for recording.
In some embodiments of the present application, the method further comprises: providing a configuration page, wherein the configuration page comprises a plurality of fault recording configuration items; and responding to the configuration instruction of each fault recording configuration item, and acquiring preset configuration parameters of fault recording through a configuration page. Wherein, a plurality of trouble record configuration items include: recording quantity configuration items, recording frequency configuration items and recording length configuration items; the record quantity configuration item comprises a plurality of sub-configuration items, and the sub-configuration items comprise at least one of the following items: direct current voltage, direct current, alternating current voltage of each phase and alternating current of each phase; optional values in the wave recording frequency configuration items are configured according to a reference sampling period; the selectable values in the wave recording length configuration items are configured according to the hardware of the current transformer.
In order to facilitate the use of workers, a configuration page can be provided on a display interface of the converter, the configuration page includes a plurality of fault recording configuration items, the fault recording configuration items include but are not limited to a record quantity configuration item, a recording frequency configuration item and a recording length configuration item, and the workers can select and fill the fault recording configuration items. The record quantity configuration item comprises a plurality of sub-configuration items, and the sub-configuration items comprise at least one of the following items: the direct current voltage, the direct current, the alternating current voltage of each phase and the alternating current of each phase, and the staff can specify the record quantity to be obtained by selecting or filling the record quantity configuration items.
The selectable value in the wave recording frequency configuration item is an integral multiple of a reference sampling period, in the process of recording the electric quantity data at each moment in the first cache of the converter, the reference sampling period is usually adopted for recording to obtain the original electric quantity data, and when the fault related data is subsequently determined, the original electric quantity data can be sampled based on the preset wave recording frequency, so that the period corresponding to the preset wave recording frequency is usually greater than or equal to the reference sampling period, and in order that in the sampling process, the sampling time point corresponds to the time point in the original electric quantity data, the wave recording frequency is an integral multiple of the reference sampling period. Assuming that the reference sampling calculation period is 100 mus, the fault recording frequency can be set to be an integral multiple of the reference period, assuming that the preset recording frequency is 1ms, namely every 10 reference sampling periods, one fault recording data is collected from the original electrical quantity data.
The product of the recording length and the filtering frequency determines the data volume, the data volume can provide requirements for hardware, the more the data volume, the larger the cache capacity and the higher the reading and writing speed, therefore, the selectable value in the recording length configuration item is configured according to the hardware of the converter, so that the hardware of the converter can meet the requirements of the data volume on the hardware.
Fig. 5 is a schematic flow chart of a converter fault recording method according to another embodiment of the present application, and as can be seen from fig. 5, the present embodiment includes:
acquiring preset configuration parameters of fault recording, wherein the preset configuration parameters comprise: presetting wave recording frequency, presetting wave recording length and designating record quantity.
And recording the electric quantity data at each moment in a first buffer of the converter according to a reference sampling period.
And detecting the state of the converter by preset times.
Judging whether the converter of the previous beat is in a non-stop state and has no fault, and judging whether the converter of the current beat is in a stop state and has a fault; if not, continuing the detection, and if so, taking the timestamp corresponding to the current beat as the fault time of the converter.
Determining a target time interval according to the fault time, and determining original electric quantity data of each specified record quantity in the target time interval from the electric quantity data at each time; and respectively sampling the original electrical quantity data of each specified record quantity according to the preset wave recording frequency to obtain fault related data of each specified record quantity.
The fault related data is arranged into a fault recording data file, and the fault recording data file is output to the movable storage device in response to a recording data export instruction; drawing the fault waveform of the converter with each specified record quantity according to the fault related data of each specified record quantity; and displaying the fault waveform of the current transformer of each specified record quantity on a display.
It is to be understood that the terms "comprises/comprising," "consisting of … …," or any other variation, are intended to cover a non-exclusive inclusion, such that a product, device, process, or method that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product, device, process, or method if desired. Without further limitation, an element defined by the phrases "comprising/including … …," "consisting of … …," or "comprising" does not exclude the presence of other like elements in a product, device, process, or method that comprises the element.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It will be further understood that the terms "upper," "lower," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship illustrated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced device, component, or structure must have a particular orientation, be constructed in a particular orientation, or be operated in a particular manner, and should not be considered limiting of the present application. The terms "first," "second," "third," and the like are used for convenience in labeling and description and have no actual meaning.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A converter fault recording method, wherein the method is performed by a converter, the method comprising:
recording electric quantity data at each moment in a first cache of the converter;
determining the fault time of the converter;
determining a target time interval according to the fault moment, and determining fault related data according to the electric quantity data in the target time interval in the first cache;
and generating a fault waveform of the current transformer according to the fault related data.
2. The method of claim 1, wherein determining a fault time of the converter comprises:
and detecting the state of the converter by a preset beat, if the converter is in a non-shutdown state and has no fault for the last beat, and the converter is in a shutdown state and has a fault for the current beat, and taking a timestamp corresponding to the current beat as the fault moment when the converter fails.
3. The method of claim 1, further comprising:
acquiring preset configuration parameters of fault recording, wherein the preset configuration parameters comprise: presetting a wave recording frequency, presetting a wave recording length and specifying a record quantity;
the determining a target time interval according to the fault time includes: determining the target time interval according to the fault moment and the preset wave recording length;
the determining fault-related data according to the electrical quantity data in the first buffer within the target time interval includes:
determining the original electrical quantity data of each specified record quantity in the target time interval from the electrical quantity data at each moment; and respectively sampling the original electrical quantity data of each specified record quantity according to the preset wave recording frequency to obtain fault related data of each specified record quantity.
4. The method of claim 3, wherein the determining the target time interval according to the fault time and the preset recording length comprises:
determining a first time length of the preset recording length in a preset percentage, and a second time length of the preset recording length minus the first time length;
determining a first time earlier than the fault time by a first time length; and a second time later than the fault time by a second duration;
and determining the target time interval according to the first time and the second time.
5. The method of claim 1, further comprising:
providing a configuration page, wherein the configuration page comprises a plurality of fault recording configuration items;
and responding to the configuration instruction of each fault recording configuration item, and acquiring preset configuration parameters of fault recording through the configuration page.
6. The method of claim 5, wherein the plurality of fault logging configuration items comprise: recording quantity configuration items, recording frequency configuration items and recording length configuration items;
wherein the record quantity configuration item comprises a plurality of sub-configuration items, and the sub-configuration items comprise at least one of the following items: direct current voltage, direct current, alternating current voltage of each phase and alternating current of each phase;
the selectable value in the wave recording frequency configuration item is an integral multiple of the reference sampling period;
the selectable values in the wave recording length configuration items are configured according to the hardware of the current transformer.
7. The method of claim 1, wherein said fault-related data comprises a plurality of specified recorded quantities of fault-related data, said first buffer being a buffer of a display of said converter;
generating a converter fault waveform according to the fault-related data comprises:
drawing the fault waveform of the current transformer of each specified record quantity according to the fault related data of each specified record quantity;
and displaying the fault waveform of the current transformer of each specified record quantity on the display.
8. The method of claim 1, wherein the fault-related data comprises a plurality of specified recorded quantities of fault-related data, and the first cache is a memory chip of the converter;
generating a converter fault waveform according to the fault-related data comprises:
arranging the fault related data of each specified record quantity into a fault recording data file;
and responding to a wave recording data export instruction, and outputting the fault wave recording data file to a movable storage device.
9. A current transformer, characterized in that the current transformer comprises: the processor is connected with the display, wherein the display is provided with a first cache;
the processor is used for recording the electrical quantity data at each moment in the first cache; the fault time of the converter is determined; determining a target time interval according to the fault moment, and determining fault related data according to the electric quantity data in the target time interval in the first cache; generating a fault waveform of the current transformer according to the fault related data; displaying the fault waveform of the current transformer on the display;
and the display is used for displaying the fault waveform of the current transformer.
10. A current transformer, characterized in that the current transformer comprises: a processor, a first cache, and a display, wherein the display has a second cache; the processor is respectively connected with the display and the first cache;
the processor is used for recording the electrical quantity data at each moment in the first cache; the fault time of the converter is determined; determining a target time interval according to the fault moment, and determining fault related data according to the electric quantity data in the target time interval in the first cache; generating a converter fault waveform according to the fault related data and writing the converter fault waveform into the second cache; the fault related data is arranged into a fault recording data file; responding to a wave recording data export instruction, and outputting the fault wave recording data file to a movable storage device;
and the display is used for displaying the fault waveform of the current transformer according to the storage content of the second cache.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116990622A (en) * | 2023-09-26 | 2023-11-03 | 国网辽宁省电力有限公司电力科学研究院 | Fault wave recording method, device, equipment and medium of transformer substation direct current system |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105676023A (en) * | 2015-12-30 | 2016-06-15 | 华自科技股份有限公司 | Recording method and system of fault recording data |
| CN106405285A (en) * | 2016-08-30 | 2017-02-15 | 华北电力大学 | Electric power system fault record data abrupt change moment detection method and system |
| CN107222280A (en) * | 2017-05-24 | 2017-09-29 | 云南电力试验研究院(集团)有限公司 | A kind of method that time synchronized is realized to different time scales fault recording system |
| FR3066844A1 (en) * | 2017-05-23 | 2018-11-30 | Monixo | METHOD FOR PREDICTING THE RUNNING OF A FAILURE ON AN APPARATUS IN TIME |
| CN110401411A (en) * | 2019-08-14 | 2019-11-01 | 阳光电源股份有限公司 | Photovoltaic energy storage system and fault wave recording device |
| CN110441657A (en) * | 2019-08-22 | 2019-11-12 | 深圳华工能源技术有限公司 | Distribution system failure wave-recording method, apparatus and storage medium |
| CN110579682A (en) * | 2019-08-22 | 2019-12-17 | 国网安徽省电力有限公司 | Fault recording data transient homologous comparison method and device |
| JP2020118602A (en) * | 2019-01-25 | 2020-08-06 | 株式会社近計システム | Fault point locating device |
| CN111880020A (en) * | 2020-04-27 | 2020-11-03 | 深圳华工能源技术有限公司 | Fault recording data generation method and device for power distribution and utilization system of power consumer |
| CN111965406A (en) * | 2020-07-13 | 2020-11-20 | 南京南瑞继保工程技术有限公司 | Power grid fault recording method and device |
| CN113092927A (en) * | 2021-05-17 | 2021-07-09 | 国网宁夏电力有限公司检修公司 | Alternating current filter state diagnosis method based on wave recording waveform image and artificial intelligence |
-
2021
- 2021-09-03 CN CN202111033776.XA patent/CN113834987A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105676023A (en) * | 2015-12-30 | 2016-06-15 | 华自科技股份有限公司 | Recording method and system of fault recording data |
| CN106405285A (en) * | 2016-08-30 | 2017-02-15 | 华北电力大学 | Electric power system fault record data abrupt change moment detection method and system |
| FR3066844A1 (en) * | 2017-05-23 | 2018-11-30 | Monixo | METHOD FOR PREDICTING THE RUNNING OF A FAILURE ON AN APPARATUS IN TIME |
| CN107222280A (en) * | 2017-05-24 | 2017-09-29 | 云南电力试验研究院(集团)有限公司 | A kind of method that time synchronized is realized to different time scales fault recording system |
| JP2020118602A (en) * | 2019-01-25 | 2020-08-06 | 株式会社近計システム | Fault point locating device |
| CN110401411A (en) * | 2019-08-14 | 2019-11-01 | 阳光电源股份有限公司 | Photovoltaic energy storage system and fault wave recording device |
| CN110441657A (en) * | 2019-08-22 | 2019-11-12 | 深圳华工能源技术有限公司 | Distribution system failure wave-recording method, apparatus and storage medium |
| CN110579682A (en) * | 2019-08-22 | 2019-12-17 | 国网安徽省电力有限公司 | Fault recording data transient homologous comparison method and device |
| CN111880020A (en) * | 2020-04-27 | 2020-11-03 | 深圳华工能源技术有限公司 | Fault recording data generation method and device for power distribution and utilization system of power consumer |
| CN111965406A (en) * | 2020-07-13 | 2020-11-20 | 南京南瑞继保工程技术有限公司 | Power grid fault recording method and device |
| CN113092927A (en) * | 2021-05-17 | 2021-07-09 | 国网宁夏电力有限公司检修公司 | Alternating current filter state diagnosis method based on wave recording waveform image and artificial intelligence |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116990622A (en) * | 2023-09-26 | 2023-11-03 | 国网辽宁省电力有限公司电力科学研究院 | Fault wave recording method, device, equipment and medium of transformer substation direct current system |
| CN116990622B (en) * | 2023-09-26 | 2023-12-15 | 国网辽宁省电力有限公司电力科学研究院 | Fault wave recording method, device, equipment and medium of transformer substation direct current system |
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