CN115856264A - Method and system for judging validity of online monitoring data of dissolved gas in transformer oil - Google Patents
Method and system for judging validity of online monitoring data of dissolved gas in transformer oil Download PDFInfo
- Publication number
- CN115856264A CN115856264A CN202211482227.5A CN202211482227A CN115856264A CN 115856264 A CN115856264 A CN 115856264A CN 202211482227 A CN202211482227 A CN 202211482227A CN 115856264 A CN115856264 A CN 115856264A
- Authority
- CN
- China
- Prior art keywords
- data
- gas
- content
- transformer oil
- judging
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention belongs to the field of transformer operation and maintenance, and provides a method and a system for judging validity of online monitoring data of dissolved gas in transformer oil, which comprises the steps of obtaining real-time online monitoring data of a transformer; judging the gas content based on the real-time online monitoring data of the transformer; if the gas content is larger than a set value, accessing a detector, otherwise, filtering the data to obtain screened online monitoring data; judging whether the screened online monitoring data is correct or not based on the screened online monitoring data; on the basis of correct on-line monitoring data, judging whether the hydrogen of various hydrocarbons in the correct on-line monitoring data has positive and negative changes at the same time; if not, judging that the correct online monitoring data is valid; the online monitoring data of the dissolved gas in the transformer oil can be used for judging, and the conditions of invalid device data, interrupted device data, wrong data, carrier gas shortage of the device, inaccurate device detection data and the like can be accurately judged.
Description
Technical Field
The invention belongs to the technical field of transformer operation and maintenance, and particularly relates to a method and a system for judging validity of online monitoring data of dissolved gas in transformer oil.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The online monitoring of the dissolved gas in the oil is one of the most important means for the daily maintenance of the transformer, and can timely find the defects of overheating, discharging and the like of the transformer, prompt operation and maintenance personnel to timely take targeted measures and avoid transformer faults.
However, the problems of data interruption, inaccurate data, severe data fluctuation and the like often occur in the operation process of the device due to the limitation of the current development situation of the online monitoring technology of the dissolved gas in the oil and the actual quality level of the device, so that the content of the dissolved gas in the real oil of the transformer cannot be reflected in real time, and the expected monitoring effect cannot be achieved.
Therefore, the validity of the online monitoring data of the dissolved gas in the oil is not accurately judged, and the abnormality of the online monitoring device of the dissolved gas in the oil cannot be found in time, so that the false alarm of the transformer is caused.
Disclosure of Invention
In order to solve the problems, the invention provides a method and a system for judging the validity of online monitoring data of the dissolved gas in the transformer oil, and the method and the system can find out that more than 95% of chromatographic devices are abnormal in time, effectively improve the quality of the online monitoring data of the dissolved gas in the oil and improve the alarm accuracy of the dissolved gas in the transformer oil.
According to some embodiments, a first aspect of the present invention provides a method for determining validity of online monitoring data of dissolved gas in transformer oil, which adopts the following technical scheme:
a method for judging validity of online monitoring data of dissolved gas in transformer oil comprises the following steps:
acquiring real-time online monitoring data of a transformer to obtain gas data in transformer oil;
judging the gas content based on the data of the gas in the transformer oil;
if the gas content is not empty and is larger than zero, judging the data correctness according to the gas data in the screened transformer oil, otherwise, judging the stability of the monitoring device;
judging whether the data are consistent with the last monitoring data or not based on the screened data of the gas in the transformer oil, and if the data are not consistent with the last monitoring data, judging whether the sum of hydrogen, carbon monoxide and carbon dioxide in the screened data of the gas in the transformer oil is zero or not;
if not, judging whether the calculated total hydrocarbon value in the screened transformer oil gas data is equal to the real-time data total hydrocarbon value or not, and if so, judging that the screened transformer oil gas data is correct;
judging whether the contents of hydrocarbon and hydrogen in the correct transformer oil gas data change in a positive direction and a negative direction at the same time and whether the contents of carbon monoxide and carbon dioxide change or not based on the correct transformer oil gas data; and if not, judging that the correct gas data in the transformer oil is valid.
Further, the stability judgment of the monitoring device specifically comprises:
continuously acquiring real-time online monitoring data of the transformer in a specified monitoring period;
and carrying out device abnormity early warning on devices which do not upload effective data in three continuous specified monitoring periods.
Further, the gas data in the transformer oil comprises H 2 、CH 4 、C 2 H 6 、C 2 H 4 、C 2 H 2 、CO、CO 2 Real-time data total hydrocarbon value;
the real-time data total hydrocarbon value specifically comprises: CH (CH) 4 、C 2 H 6 、C 2 H 4 And C 2 H 2 And (4) the sum.
Further, whether the content of hydrocarbon and hydrogen in the correct transformer oil gas data has positive and negative changes and whether the content of carbon monoxide and carbon dioxide has changed simultaneously or not is specifically as follows:
CH 4 、C 2 H 6 、C 2 H 4 、C 2 H 2 and whether any two of hydrogen gas have positive and negative changes simultaneously, and CO 2 Whether or not to change simultaneously; or alternatively
CH 4 、C 2 H 6 、C 2 H 4 、C 2 H 2 And whether any three hydrocarbons in the hydrogen gas have positive and negative changes simultaneously, and CO 2 Whether any changes; or alternatively
CH 4 、C 2 H 6 、C 2 H 4 、C 2 H 2 And whether any four hydrocarbons in the hydrogen gas have positive and negative directions simultaneouslyAnd (4) changing.
Further, if the gas content is not empty and is greater than zero, specifically:
[c(H 2 )！＝null and c(CH 4 )！＝null and c(C 2 H 6 )！＝null and c(C 2 H 4 )！＝null and c(C 2 H 2 )！＝null and c(CO)！＝null and c(CO 2 )！＝null]and c(H 2 )>＝0and c(CH 4 )>＝0and c(C 2 H 6 )>＝0and c(C 2 H 4 )>＝0and c(C 2 H 2 )>＝0and c(CO)>＝0and c(CO 2 )>＝0。
further, the method further comprises: whether the effective gas data in the transformer oil is accurate or not is judged, and the judgment logic is as follows:
condition 1: test Hydrogen content less than 20 and ((test Hydrogen content-Online Hydrogen content)>=8 or online H 2 The current value of the content is compared with the last H 2 The content value decreased by more than 80%);
condition 2: a trial total hydrocarbon value of less than 20 and (trial total hydrocarbon value-on-line total hydrocarbon value) > =8;
condition 3: a total hydrocarbons tested value of less than 20 and (total hydrocarbons tested-total hydrocarbons on-line) > =2 and at least one component gas content is 0;
condition 4: the test hydrogen content is greater than or equal to 20 and ((test hydrogen content-on-line hydrogen content)/test hydrogen content is greater than or equal to 40% or on-line H 2 The current value of the content is compared with the last H 2 Ratio of the content values<＝-0.8)；
Condition 5: a total hydrocarbon value tested of 20 or more and (total hydrocarbon value tested-total hydrocarbon value on-line)/total hydrocarbon value tested of 50 or more;
condition 6: a total hydrocarbon number of 20 or more (total hydrocarbon number of test-on-line total hydrocarbon number)/total hydrocarbon number of test of 30% or more and at least one component gas content of 0;
condition 7: CH (CH) 4 、C 2 H 4 、C 2 H 6 Wherein the online data content of one type of gas is 0 and the offline data is more than or equal to 1;
condition 8: test CO content of 100 or more and (test CO content-on-line CO content)/test CO content of 50% or more and test CO 2 The content is 100 or more (test CO) 2 Content-on-line CO 2 Content)/test CO 2 The content is more than or equal to 50 percent;
condition 9: test CO content less than 100 and (test CO content-on-line CO content)>=50 and test CO 2 The content is less than 100 and (test CO) 2 Content-on-line CO 2 Content)>＝50。
Further, if any one of the conditions is met, the method prompts that the device is abnormal and needs to be calibrated; otherwise, the gas data in the transformer oil is judged to be real and reliable real-time monitoring data, and data analysis and transformer early warning programs are executed.
According to some embodiments, a second aspect of the present invention provides a system for determining validity of online monitoring data of dissolved gas in transformer oil, which adopts the following technical solutions:
a system for judging validity of online monitoring data of dissolved gas in transformer oil comprises:
the data acquisition module is configured to acquire real-time online monitoring data of the transformer to obtain gas data in transformer oil;
a gas content determination module configured to determine a gas content based on the gas data in the transformer oil;
if the gas content is not empty and is larger than zero, judging the data correctness according to the gas data in the screened transformer oil, otherwise, judging the stability of the monitoring device;
the data correctness judging module is configured to judge whether the data is consistent with the last monitoring data or not based on the screened gas data in the transformer oil, and if the data is not consistent with the last monitoring data, judging whether the sum of hydrogen, carbon monoxide and carbon dioxide in the screened gas data in the transformer oil is zero or not;
if not, judging whether the total hydrocarbon calculation sum in the screened transformer oil gas data is equal to the real-time data total hydrocarbon value or not, and if so, judging that the screened transformer oil gas data is correct;
the data validity judging module is configured to judge whether the content of hydrocarbon and hydrogen in correct gas data in the transformer oil changes in positive and negative directions and the content of carbon monoxide and carbon dioxide in the correct gas data in the transformer oil changes or not based on the correct gas data in the transformer oil; and if not, judging that the correct gas data in the transformer oil is valid.
According to some embodiments, a third aspect of the invention provides a computer-readable storage medium.
A computer-readable storage medium, on which a computer program is stored, which when executed by a processor implements the steps of the method for determining validity of online monitoring data of dissolved gas in transformer oil according to the first aspect.
According to some embodiments, a fourth aspect of the invention provides a computer apparatus.
A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the steps of the method for determining validity of online monitoring data of dissolved gas in transformer oil according to the first aspect.
Compared with the prior art, the invention has the beneficial effects that:
the method and the system for judging the validity of the online monitoring data of the dissolved gas in the transformer oil can judge by only utilizing the online monitoring data of the dissolved gas in the transformer oil, can accurately judge the conditions of invalid device data, interrupted device data, wrong data, carrier gas shortage of the device, inaccurate device detection data and the like, ensure the truth and validity of the data for the abnormal detection of the transformer (reactor), and greatly reduce the online monitoring and early warning false alarm rate of the dissolved gas in the oil.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
Fig. 1 is a flowchart of a method for determining validity of online monitoring data of dissolved gas in transformer oil according to an embodiment of the present invention.
Detailed Description
The invention is further described with reference to the following figures and examples.
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
Example one
As shown in fig. 1, the present embodiment provides a method for determining validity of online monitoring data of dissolved gas in transformer oil. In this embodiment, the method includes the steps of:
acquiring real-time online monitoring data of a transformer to obtain gas data in transformer oil;
judging the gas content based on the data of the gas in the transformer oil;
if the gas content is not empty and is larger than zero, judging the data correctness according to the gas data in the screened transformer oil, otherwise, judging the stability of the monitoring device;
judging whether the data is consistent with the previous monitoring data or not based on the screened gas data in the transformer oil, and if not, judging whether the sum of hydrogen, carbon monoxide and carbon dioxide in the screened gas data in the transformer oil is zero or not;
if not, judging whether the calculated total hydrocarbon value in the screened transformer oil gas data is equal to the real-time data total hydrocarbon value or not, and if so, judging that the screened transformer oil gas data is correct;
judging whether the contents of hydrocarbon and hydrogen in the correct transformer oil gas data change in a positive direction and a negative direction at the same time and whether the contents of carbon monoxide and carbon dioxide change or not based on the correct transformer oil gas data; and if not, judging that the correct gas data in the transformer oil is valid.
The stability judgment of the monitoring device specifically comprises the following steps:
continuously acquiring real-time online monitoring data of the transformer in a specified monitoring period;
and carrying out device abnormity early warning on devices which do not upload effective data in three continuous specified monitoring periods.
Whether the content of hydrocarbon and hydrogen in the correct transformer oil gas data has positive and negative changes and whether the content of carbon monoxide and carbon dioxide has changes simultaneously or not is specifically as follows:
CH 4 、C 2 H 6 、C 2 H 4 、C 2 H 2 and whether any two of hydrogen gas have positive and negative changes simultaneously, and CO 2 Whether or not to change simultaneously; or
CH 4 、C 2 H 6 、C 2 H 4 、C 2 H 2 And whether any three hydrocarbons in the hydrogen gas have positive and negative changes simultaneously and have CO and CO 2 Whether any changes; or
CH 4 、C 2 H 6 、C 2 H 4 、C 2 H 2 And whether there is a positive or negative change in any four hydrocarbons in the hydrogen gas simultaneously.
If the gas content is not empty and is greater than zero, specifically:
[c(H 2 )！＝null and c(CH 4 )！＝null and c(C 2 H 6 )！＝null and c(C 2 H 4 )！＝null and c(C 2 H 2 )！＝null and c(CO)！＝null and c(CO 2 )！＝null]and c(H 2 )>＝0and c(CH 4 )>＝0and c(C 2 H 6 )>＝0and c(C 2 H 4 )>＝0and c(C 2 H 2 )>＝0and c(CO)>＝0and c(CO 2 )>＝0。
the method described in this embodiment specifically includes:
the method comprises the steps of firstly, acquiring real-time online monitoring data of a transformer to obtain gas data in a latest group of transformer oil; each set of data comprises H 2 、CH 4 、C 2 H 6 、C 2 H 4 、C 2 H 2 、CO、CO 2 Real-time data total hydrocarbon value 8 data values;
step two, real-time online monitoring data enters a device access detector, invalid data with a certain gas content being empty or a certain gas content being less than 0 is filtered without being accessed, the non-access time of the device is accumulated, step three is executed, otherwise, step four is executed, and an access formula is as follows:
[c(H 2 )！＝null and c(CH 4 )！＝null and c(C 2 H 6 )！＝null and c(C 2 H 4 )！＝null and c(C 2 H 2 )！＝null and c(CO)！＝null and c(CO 2 )！＝null]and c(H 2 )>＝0and c(CH 4 )>＝0and c(C 2 H 6 )>＝0and c(C 2 H 4 )>＝0and c(C 2 H 2 )>＝0and c(CO)>＝0and c(CO 2 )>＝0。
and thirdly, starting the device stability detector, and performing device abnormity early warning on a device which does not upload effective data in three continuous specified monitoring periods:
if the uploading period of 1000Kv, +/-800 Kv and +/-660 Kv is 4h, carrying out device early warning when no data are uploaded for 12 h;
the device herein refers to an online monitoring device for dissolved gas in oil.
And fourthly, entering online monitoring data into a data correctness detector, and carrying out qualitative judgment on the online monitoring data:
4.1, comparing the data with the previous data, prompting that the data are unchanged for continuous N hours/day when the data are completely consistent, ending the data judgment, and otherwise executing 4.2;
4.2 if H 2 +CO+CO 2 =0, then prompting that the content of more than three gases is 0 and the detection result is wrong, ending the data judgment, otherwise executing 4.3
4.3 calculating CH 4 +C 2 H 6 +C 2 H 4 +C 2 H 2 And comparing the sum with the total hydrocarbon value of the real-time data, if the sum is not wanted, prompting that the total hydrocarbon is calculated wrongly, finishing the data judgment, and if the sum is not wanted, executing the fifth step.
Fifthly, the online monitoring data enters a device validity detector to execute the following judgment:
any 2 (in hydrocarbon and hydrogen) have positive and negative changes simultaneously, and CO 2 Simultaneously, changing; or
Any 3 kinds of (hydrocarbons, hydrogen) have positive and negative changes simultaneously, and CO 2 Any one of the variations; or alternatively
Any 4 (hydrocarbons, hydrogen) have positive and negative changes at the same time,
and when the judgment is in effect, prompting that the device lacks carrier gas, ending the data judgment, and otherwise, executing the sixth step.
Sixthly, the online monitoring data enters a data accuracy detector to trigger the following judgment logic
Condition 1: test Hydrogen content less than 20 and ((test Hydrogen content-on-line Hydrogen content)>=8 or online H 2 The current value of the content is compared with the last H 2 The content value decreased by more than 80%);
condition 2: test total hydrocarbon value less than 20 and (test total hydrocarbon value-on-line total hydrocarbon value) > =8;
condition 3: a total hydrocarbons tested value of less than 20 and (total hydrocarbons tested-total hydrocarbons on-line) > =2 and at least one component gas content is 0;
condition 4: the test hydrogen content is greater than or equal to 20 and ((test hydrogen content-on-line hydrogen content)/test hydrogen content is greater than or equal to 40% or on-line H 2 The current value of the content is compared with the last H 2 Ratio of the content values<＝-0.8)；
Condition 5: a total hydrocarbon value tested of 20 or more and (total hydrocarbon value tested-total hydrocarbon value on-line)/total hydrocarbon value tested of 50 or more;
condition 6: a total hydrocarbon number of 20 or more (total hydrocarbon number of test-on-line total hydrocarbon number)/total hydrocarbon number of test of 30% or more and at least one component gas content of 0;
condition 7: CH (CH) 4 、C 2 H 4 、C 2 H 6 Wherein the online data content of one type of gas is 0 and the offline data is more than or equal to 1;
condition 8: test CO content of 100 or more and (test CO content-on-line CO content)/test CO content of 50% or more and test CO 2 The content is 100 or more (test CO) 2 Content-on-line CO 2 Content)/test CO 2 The content is more than or equal to 50 percent;
condition 9: test CO content less than 100 and (test CO content-on-line CO content)>=50 and test CO 2 The content is less than 100 and (test CO) 2 Content-on-line CO 2 Content)>＝50；
When any condition is met, the device is prompted to be calibrated if abnormal, and subsequent analysis is not carried out on data. Otherwise, executing the seventh step.
It should be noted that, the test data mentioned in the above 9 conditions refers to data obtained by historically and periodically collecting gas data in the transformer oil and detecting the content data of each gas by using laboratory detection equipment, and the data is consistent with real-time online monitoring data, and all the data include H 2 、CH 4 、C 2 H 6 、C 2 H 4 、C 2 H 2 、CO、CO 2 Real-time data total hydrocarbon value 8 data values.
And seventhly, considering that the online monitoring data is real and reliable real-time monitoring data, and triggering a transformer differentiation early warning module.
Example two
The embodiment provides a system for judging validity of online monitoring data of dissolved gas in transformer oil, which comprises:
the data acquisition module is configured to acquire real-time online monitoring data of the transformer to obtain gas data in transformer oil;
a gas content determination module configured to determine a gas content based on the gas data in the transformer oil;
if the gas content is not empty and is larger than zero, judging the data correctness according to the gas data in the screened transformer oil, otherwise, judging the stability of the monitoring device;
the data correctness judging module is configured to judge whether the data is consistent with the last monitoring data or not based on the screened gas data in the transformer oil, and if the data is not consistent with the last monitoring data, judging whether the sum of hydrogen, carbon monoxide and carbon dioxide in the screened gas data in the transformer oil is zero or not;
if not, judging whether the total hydrocarbon calculation sum in the screened transformer oil gas data is equal to the real-time data total hydrocarbon value or not, and if so, judging that the screened transformer oil gas data is correct;
the data validity judging module is configured to judge whether the content of hydrocarbon and hydrogen in correct gas data in the transformer oil changes in positive and negative directions and the content of carbon monoxide and carbon dioxide in the correct gas data in the transformer oil changes or not based on the correct gas data in the transformer oil; and if not, judging that the correct gas data in the transformer oil is valid.
The modules are the same as the corresponding steps in the implementation example and application scenarios, but are not limited to the disclosure of the first embodiment. It should be noted that the modules described above as part of a system may be implemented in a computer system such as a set of computer executable instructions.
In the foregoing embodiments, the description of each embodiment has an emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions in other embodiments.
The proposed system can be implemented in other ways. For example, the above-described system embodiments are merely illustrative, and for example, the division of the above-described modules is merely a logical division, and in actual implementation, there may be other divisions, for example, multiple modules may be combined or integrated into another system, or some features may be omitted, or not executed.
EXAMPLE III
The present embodiment provides a computer-readable storage medium, on which a computer program is stored, and the program is executed by a processor to implement the steps in the method for determining validity of online monitoring data of dissolved gas in transformer oil according to the first embodiment.
Example four
The embodiment provides computer equipment, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor executes the program to realize the steps in the method for judging the validity of the online monitoring data of the dissolved gas in the transformer oil according to the embodiment.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive changes in the technical solutions of the present invention.
Claims (10)
1. The method for judging the validity of the online monitoring data of the dissolved gas in the transformer oil is characterized by comprising the following steps of:
acquiring real-time online monitoring data of a transformer to obtain gas data in transformer oil;
judging the gas content based on the data of the gas in the transformer oil;
if the gas content is not empty and is larger than zero, judging the data correctness according to the gas data in the screened transformer oil, otherwise, judging the stability of the monitoring device;
judging whether the data is consistent with the previous monitoring data or not based on the screened gas data in the transformer oil, and if not, judging whether the sum of hydrogen, carbon monoxide and carbon dioxide in the screened gas data in the transformer oil is zero or not;
if not, judging whether the total hydrocarbon calculation sum in the screened transformer oil gas data is equal to the real-time data total hydrocarbon value or not, and if so, judging that the screened transformer oil gas data is correct;
judging whether the contents of hydrocarbon and hydrogen in the correct transformer oil gas data change in a positive direction and a negative direction at the same time and whether the contents of carbon monoxide and carbon dioxide change or not based on the correct transformer oil gas data; and if not, judging that the correct gas data in the transformer oil is valid.
2. The method for judging the validity of the online monitoring data of the dissolved gas in the transformer oil according to claim 1, wherein the judgment of the stability of the monitoring device specifically comprises:
continuously acquiring real-time online monitoring data of the transformer in a specified monitoring period;
and carrying out device abnormity early warning on devices which do not upload effective data in three continuous specified monitoring periods.
3. The on-line monitoring of dissolved gas in transformer oil of claim 1The data validity judgment method is characterized in that the gas data in the transformer oil comprises H 2 、CH 4 、C 2 H 6 、C 2 H 4 、C 2 H 2 、CO、CO 2 Real-time data total hydrocarbon value;
the real-time data total hydrocarbon value specifically comprises: CH (CH) 4 、C 2 H 6 、C 2 H 4 And C 2 H 2 And (4) summing.
4. The method for determining validity of the online monitoring data of the dissolved gas in the transformer oil according to claim 1, wherein whether the content of the hydrocarbon and the hydrogen in the correct gas data in the transformer oil changes in both positive and negative directions and the content of the carbon monoxide and the carbon dioxide in the correct gas data in the transformer oil changes is specifically:
CH 4 、C 2 H 6 、C 2 H 4 、C 2 H 2 and hydrogen gas has positive and negative changes, and CO are simultaneously 2 Whether or not to change simultaneously; or alternatively
CH 4 、C 2 H 6 、C 2 H 4 、C 2 H 2 Whether any three hydrocarbons of hydrogen and hydrogen have positive and negative changes simultaneously and whether CO and CO have positive and negative changes simultaneously 2 Whether any changes; or alternatively
CH 4 、C 2 H 6 、C 2 H 4 、C 2 H 2 And hydrogen if there is a positive or negative change in any of the four hydrocarbons.
5. The method for judging the validity of the online monitoring data of the dissolved gas in the transformer oil according to claim 1, wherein if the gas content is not empty and is greater than zero, the method specifically comprises the following steps:
[c(H 2 )！＝null and c(CH 4 )！＝null and c(C 2 H 6 )！＝null and c(C 2 H 4 )！＝null and c(C 2 H 2 )！＝null and c(CO)！＝null and c(CO 2 )！＝null]and c(H 2 )>＝0and c(CH 4 )>＝0and c(C 2 H 6 )>＝0and c(C 2 H 4 )>＝0and c(C 2 H 2 )>＝0and c(CO)>＝0and c(CO 2 )>＝0。
6. the method for judging the validity of the online monitoring data of the dissolved gas in the transformer oil according to claim 1, further comprising: whether the effective gas data in the transformer oil is accurate or not is judged, and the judgment logic is as follows:
condition 1: test Hydrogen content less than 20 and ((test Hydrogen content-on-line Hydrogen content)>=8 or online H 2 The current value of the content is compared with the last H 2 The content value is reduced by more than 80%);
condition 2: a trial total hydrocarbon value of less than 20 and (trial total hydrocarbon value-on-line total hydrocarbon value) > =8;
condition 3: a total hydrocarbons tested value of less than 20 and (total hydrocarbons tested-total hydrocarbons on-line) > =2 and at least one component gas content is 0;
condition 4: the test hydrogen content is greater than or equal to 20 and ((test hydrogen content-on-line hydrogen content)/test hydrogen content is greater than or equal to 40% or on-line H 2 The current value of the content is compared with the last H 2 Ratio of the content values<＝-0.8)；
Condition 5: a total hydrocarbon value tested of 20 or more and (total hydrocarbon value tested-total hydrocarbon value on-line)/total hydrocarbon value tested of 50 or more;
condition 6: a total hydrocarbon number of 20 or more (total hydrocarbon number of test-on-line total hydrocarbon number)/total hydrocarbon number of test of 30% or more and at least one component gas content of 0;
condition 7: CH (CH) 4 、C 2 H 4 、C 2 H 6 Wherein the online data content of one type of gas is 0 and the offline data is more than or equal to 1;
condition 8: test CO content of 100 or more and (test CO content-on-line CO content)/test CO content of 50% or more and test CO 2 The content is 100 or more (test CO) 2 Content-on-line CO 2 Content)/test CO 2 The content is more than or equal to50％；
Condition 9: test CO content less than 100 and (test CO content-on-line CO content)>=50 and test CO 2 The content is less than 100 and (test CO) 2 Content-on-line CO 2 Content)>＝50。
7. The method for judging the validity of the online monitoring data of the dissolved gas in the transformer oil according to claim 6, wherein if any one of the conditions is met, a 'device is abnormal and needs to be calibrated' is prompted; otherwise, the gas data in the transformer oil is judged to be real and reliable real-time monitoring data, and data analysis and transformer early warning programs are executed.
8. The utility model provides a system is judged to dissolved gas on-line monitoring data validity in transformer oil which characterized in that includes:
the data acquisition module is configured to acquire real-time online monitoring data of the transformer to obtain gas data in transformer oil;
a gas content determination module configured to determine a gas content based on the gas data in the transformer oil;
if the gas content is not empty and is larger than zero, judging the data correctness according to the gas data in the screened transformer oil, otherwise, judging the stability of the monitoring device;
the data correctness judging module is configured to judge whether the data is consistent with the last monitoring data or not based on the screened gas data in the transformer oil, and if the data is not consistent with the last monitoring data, judging whether the sum of hydrogen, carbon monoxide and carbon dioxide in the screened gas data in the transformer oil is zero or not;
if not, judging whether the total hydrocarbon calculation sum in the screened transformer oil gas data is equal to the real-time data total hydrocarbon value or not, and if so, judging that the screened transformer oil gas data is correct;
the data validity judging module is configured to judge whether the content of hydrocarbon and hydrogen in correct gas data in the transformer oil changes in positive and negative directions and the content of carbon monoxide and carbon dioxide in the correct gas data in the transformer oil changes or not based on the correct gas data in the transformer oil; and if not, judging that the correct gas data in the transformer oil is valid.
9. A computer-readable storage medium, on which a computer program is stored, wherein the program, when executed by a processor, implements the steps of the method for determining validity of online monitoring data of dissolved gas in transformer oil according to any one of claims 1 to 7.
10. Computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor executes the program to implement the steps of the method for determining validity of the online monitoring data of the dissolved gas in transformer oil according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211482227.5A CN115856264A (en) | 2022-11-24 | 2022-11-24 | Method and system for judging validity of online monitoring data of dissolved gas in transformer oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211482227.5A CN115856264A (en) | 2022-11-24 | 2022-11-24 | Method and system for judging validity of online monitoring data of dissolved gas in transformer oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115856264A true CN115856264A (en) | 2023-03-28 |
Family
ID=85665876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211482227.5A Pending CN115856264A (en) | 2022-11-24 | 2022-11-24 | Method and system for judging validity of online monitoring data of dissolved gas in transformer oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115856264A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117110587A (en) * | 2023-10-25 | 2023-11-24 | 国网四川省电力公司超高压分公司 | Method and system for on-line monitoring abnormality alarm of dissolved gas in oil |
-
2022
- 2022-11-24 CN CN202211482227.5A patent/CN115856264A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117110587A (en) * | 2023-10-25 | 2023-11-24 | 国网四川省电力公司超高压分公司 | Method and system for on-line monitoring abnormality alarm of dissolved gas in oil |
| CN117110587B (en) * | 2023-10-25 | 2024-01-23 | 国网四川省电力公司超高压分公司 | Method and system for on-line monitoring abnormality alarm of dissolved gas in oil |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109239360B (en) | Reaction curve abnormity detection method and device | |
| CN103776654B (en) | The method for diagnosing faults of multi-sensor information fusion | |
| CN104764869B (en) | Transformer gas fault diagnosis and alarm method based on multidimensional characteristics | |
| CN103728429B (en) | On-line water quality monitoring method and Monitoring systems | |
| CN111709465B (en) | Intelligent identification method for rough difference of dam safety monitoring data | |
| CN112799898B (en) | Interconnection system fault node positioning method and system based on distributed fault detection | |
| CN107301617B (en) | Method and equipment for evaluating quality of waste gas monitoring data | |
| CN103675221B (en) | Water quality detection analysis system and water quality detection analysis method | |
| CN115856264A (en) | Method and system for judging validity of online monitoring data of dissolved gas in transformer oil | |
| CN116738353B (en) | Pharmaceutical workshop air filter element performance detection method based on data analysis | |
| CN114757413A (en) | Bad data identification method based on time sequence series analysis coupling neural network prediction | |
| CN116994418B (en) | Pipeline safety early warning method and system | |
| CN117826693B (en) | Intelligent oil depot monitoring and early warning system and method | |
| CN114965309A (en) | Turbidity compensation method, system and device for water quality online monitoring system and storage medium | |
| CN111338310B (en) | Industrial process steady-state working condition identification and classification method | |
| CN117421616A (en) | Mine shaft detection system and method | |
| CN112102903A (en) | Quality control system based on clinical laboratory testing result | |
| CN116910677A (en) | Industrial instrument fault diagnosis method and system | |
| CN108345289A (en) | A kind of industrial process stationarity detection method based on substituted plane | |
| CN116046048A (en) | Sewage treatment sensor fault diagnosis method based on data driving | |
| CN104458923B (en) | Method and system for detecting warning value of content of each gas in oil in transformer | |
| CN115510998A (en) | Transaction abnormal value detection method and device | |
| CN115310561A (en) | Electromagnetic valve fault monitoring method based on integrated instant learning | |
| CN101846588A (en) | Method for detecting valve viscous jumping characteristic on basis of mode search | |
| CN118283165B (en) | Mobile phone safety coefficient analysis system based on big data |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |