CN115290798A - Stability performance monitoring method and terminal of transformer oil chromatographic on-line monitoring device - Google Patents
Stability performance monitoring method and terminal of transformer oil chromatographic on-line monitoring device Download PDFInfo
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 72
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- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 105
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 104
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 104
- 239000001257 hydrogen Substances 0.000 claims abstract description 104
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Abstract
The invention provides a stability performance monitoring method and a terminal of a transformer oil chromatography online monitoring device. The method comprises the following steps: acquiring a plurality of data samples of the online monitoring device for the oil chromatography of the transformer in transport within a preset time; calculating hydrogen repeatability RSD and total hydrocarbon repeatability RSD of all data samples; and determining the stability of the transformer oil chromatographic on-line monitoring device according to the hydrogen repeatability RSD and the total hydrocarbon repeatability RSD. The invention can monitor the stability of the transformer oil chromatogram on-line monitoring device in real time, improves the application effect of the transformer oil chromatogram on-line monitoring device, and is convenient to apply and popularize in actual engineering.
Description
Technical Field
The invention relates to the technical field of on-line monitoring of power transformation equipment, in particular to a stability performance monitoring method and a stability performance monitoring terminal of a transformer oil chromatography on-line monitoring device.
Background
The transformer is used as one of core equipment of a power grid, the operation reliability of the transformer directly influences the safe and stable operation level of the power grid, and the significance of guaranteeing the safe and stable operation of the core equipment such as the transformer is great. The transformer oil chromatogram on-line monitoring device can monitor the running state of the transformer in real time, discover and track latent faults, and is widely applied to transformer substations with voltage levels of 110kV and above.
Due to the influence of various factors such as severe field environment, electromagnetic fields existing around operating equipment, aging of the monitoring device and the like, the stability of data of the transformer oil chromatography online monitoring device is deteriorated. If the transformer oil chromatogram on-line monitoring device with poor stability performance is not diagnosed in time, accidents such as false alarm of the device, misjudgment of the running state of the transformer, missing judgment and the like can be caused, and the application value and the data reliability of the transformer oil chromatogram on-line monitoring device are lost.
However, there is no technical solution for monitoring the stability of the transformer oil chromatography online monitoring device in real time in the prior art.
Disclosure of Invention
The embodiment of the invention provides a method and a terminal for monitoring the stability of a transformer oil chromatographic online monitoring device, which aim to solve the problem that the stability of the transformer oil chromatographic online monitoring device cannot be monitored in real time.
In a first aspect, an embodiment of the present invention provides a method for monitoring stability of an online chromatographic monitoring device for transformer oil, including:
acquiring a plurality of data samples monitored in a preset time by an online chromatographic monitoring device for transformer oil in transport; each data sample comprises a hydrogen content value and a total hydrocarbon content value;
calculating the hydrogen repeatability RSD and the total hydrocarbon repeatability RSD of all data samples;
and determining the stability of the transformer oil chromatography online monitoring device according to the hydrogen repeatability RSD and the total hydrocarbon repeatability RSD.
In a possible implementation manner, before the calculating the hydrogen repeatability RSD and the total hydrocarbon repeatability RSD of all the data samples, the method further includes:
dividing all the data samples into N groups, wherein each group comprises M data samples; n is an integer greater than or equal to 1, M is an integer greater than or equal to 5;
the calculation of hydrogen and total hydrocarbon repeatability RSD for all data samples includes:
the hydrogen and total hydrocarbon repeatability RSD in each set of data samples were calculated separately.
In a possible implementation manner, the determining the stability of the transformer oil chromatography online monitoring device according to the hydrogen repeatability RSD and the total hydrocarbon repeatability RSD includes:
determining the reliability of each group of data samples according to the hydrogen repeatability RSD and the total hydrocarbon repeatability RSD of each group of data samples;
calculating the qualified rate of all the data samples according to the reliability of all the data samples;
and when the qualified rate is greater than or equal to a first preset value, determining that the stability of the transformer oil chromatography online monitoring device is qualified.
In a possible implementation manner, the determining the reliability of each group of data samples according to the hydrogen repeatability RSD and the total hydrocarbon repeatability RSD of each group of data samples includes:
respectively calculating the average value of the hydrogen content and the average value of the total hydrocarbon content in the current group of data samples;
when the hydrogen content average value is less than or equal to a second preset value, and the hydrogen repeatability RSD of the current group of data samples is greater than 0 and less than or equal to a third preset value, determining that the calculation result of the hydrogen repeatability RSD in the current group of data samples is reliable;
when the hydrogen content average value is larger than the second preset value, and the hydrogen repeatability RSD of the current group of data samples is larger than 0 and smaller than or equal to a fourth preset value, determining that the calculation result of the hydrogen repeatability RSD in the current group of data samples is reliable; the third preset value is greater than the fourth preset value;
when the average value of the total hydrocarbon content is less than or equal to the second preset value, and the total hydrocarbon repeatability RSD of the current group of data samples is greater than 0 and less than or equal to the third preset value, determining that the calculation result of the total hydrocarbon repeatability RSD in the current group of data samples is reliable;
when the average value of the total hydrocarbon content is larger than the second preset value, and the total hydrocarbon repeatability RSD of the current group of data samples is larger than 0 and smaller than or equal to a fourth preset value, determining that the calculation result of the total hydrocarbon repeatability RSD in the current group of data samples is reliable;
if the calculation result of the hydrogen repeatability RSD in the current group of data samples is reliable, and the calculation result of the total hydrocarbon repeatability RSD is reliable, determining that the current group of data samples is reliable;
otherwise, the current set of data samples is determined to be unreliable.
In one possible implementation, the separately calculating the hydrogen repeatability RSD and the total hydrocarbon repeatability RSD in each set of data samples includes:
according to
Calculating hydrogen repeatability RSD or total hydrocarbon repeatability RSD in the current group of data samples;
wherein RSD represents the hydrogen repeatability RSD, C of the current group i Indicating the hydrogen content value in the ith data sample in the current group,
representing the average value of the hydrogen content values in all the data samples in the current group, wherein M represents the number of the data samples in the current group;
alternatively, RSD represents the total hydrocarbon repeatability RSD, C of the current group i Representing the total hydrocarbon content value in the ith data sample in the current group,
representing the average of the total hydrocarbon content values in all data samples in the current group, and M represents the number of data samples in the current group;
calculating the qualified rate of all the group data samples according to the reliability of all the group data samples, including:
according to
Calculating the qualified rate of all the data samples;
wherein ,RSDPercent of pass Representing the yield of all sets of data samples, r representing the number of sets for which the data samples are reliable, and q representing the number of all sets.
In one possible implementation manner, after the dividing all the data samples into N groups, each group including M data samples, the method further includes:
checking whether a missing item exists in each group of data samples;
if the missing item exists in the data samples of the current group, determining that the data samples of the current group are unreliable;
and if the missing item does not exist in the data samples of the current group, calculating the hydrogen repeatability RSD and the total hydrocarbon repeatability RSD of the data samples of the current group, and determining the reliability of each group of data samples according to the hydrogen repeatability RSD and the total hydrocarbon repeatability RSD of each group of data samples.
In a second aspect, an embodiment of the present invention provides a stability monitoring apparatus for an online monitoring apparatus for transformer oil chromatography, including:
the acquisition module is used for acquiring a plurality of data samples monitored by the transformer oil chromatography online monitoring device within preset time;
the calculation module is used for calculating the hydrogen repeatability RSD and the total hydrocarbon repeatability RSD of all the data samples;
and the judgment module is used for determining the stability of the transformer oil chromatographic on-line monitoring device according to the hydrogen repeatability RSD and the total hydrocarbon repeatability RSD.
In a possible implementation manner, the calculation module is further configured to divide all the data samples into N groups, where each group includes M data samples; n is an integer greater than or equal to 1, M is an integer greater than or equal to 5;
the calculation module is further used for calculating the hydrogen repeatability RSD and the total hydrocarbon repeatability RSD in each group of data samples respectively.
In a third aspect, an embodiment of the present invention provides a terminal, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps of the method according to the first aspect or any one of the possible implementation manners of the first aspect when executing the computer program.
In a fourth aspect, the present invention provides a computer-readable storage medium, which stores a computer program, and when the computer program is executed by a processor, the computer program implements the steps of the method according to the first aspect or any one of the possible implementation manners of the first aspect.
The embodiment of the invention provides a stability performance monitoring method and a terminal of a transformer oil chromatogram on-line monitoring device, which are used for acquiring a plurality of data samples of the transformer oil chromatogram on-line monitoring device in a preset time; calculating hydrogen repeatability RSD and total hydrocarbon repeatability RSD of all data samples; according to the hydrogen repeatability RSD and the total hydrocarbon repeatability RSD, the stability of the transformer oil chromatography on-line monitoring device is determined, the stability of the transformer oil chromatography on-line monitoring device can be monitored in real time, the application effect of the transformer oil chromatography on-line monitoring device is improved, and the transformer oil chromatography on-line monitoring device is convenient to apply and popularize in actual engineering.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the embodiments or the prior art description will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings may be obtained according to these drawings without inventive labor.
Fig. 1 is a flowchart illustrating an implementation of a method for monitoring stability of an on-line monitoring device for a transformer oil chromatogram according to an embodiment of the present invention;
FIG. 2 is a flow chart of a method for monitoring stability of an on-line chromatographic monitoring device for transformer oil according to another embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a stability monitoring device of an on-line transformer oil chromatography monitoring device provided in an embodiment of the present invention;
fig. 4 is a schematic diagram of a terminal according to an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
To make the objects, technical solutions and advantages of the present invention more apparent, the following description will be made by way of specific embodiments with reference to the accompanying drawings.
Fig. 1 is a flowchart of an implementation of a method for monitoring stability of an on-line monitoring device for a transformer oil chromatogram provided by an embodiment of the present invention, which is detailed as follows:
The on-line monitoring device for the oil chromatography of the on-line transformer is fixedly connected with an on-line transformer, and periodically detects the transformer oil in the transformer to obtain corresponding on-line data and store the data. The preset time here may be 1 month, 3 months or 6 months, and is set by the user himself. The embodiment of the present invention is not particularly limited thereto.
At step 102, the hydrogen repeatability RSD and the total hydrocarbon repeatability RSD are calculated for all data samples.
Optionally, referring to fig. 2, before step 102, the method further includes:
Further, after step 104, the method further includes:
if the missing item exists in the data samples of the current group, determining that the data samples of the current group are unreliable;
and if the missing item does not exist in the data samples of the current group, calculating the hydrogen repeatability RSD and the total hydrocarbon repeatability RSD of the data samples of the current group, and determining the reliability of each group of data samples according to the hydrogen repeatability RSD and the total hydrocarbon repeatability RSD of each group of data samples.
In practical applications, the data sample obtained in step 101 may have missing entries, for example, if a data sample contains only hydrogen values and does not contain total hydrocarbon values, it indicates that the total hydrocarbon values are missing, and vice versa. And if the data samples in the current group have the condition of missing items, directly determining that the data samples in the current group are unreliable without calculating the hydrogen repeatability RSD and the total hydrocarbon repeatability RSD.
Accordingly, step 102 may include:
the hydrogen and total hydrocarbon repeatability RSD in each set of data samples were calculated separately. It is understood that "sets of data samples" herein refers to sets of data samples for which there is no missing item in the data samples within the set.
Optionally, can be based on
Calculating hydrogen repeatability RSD or total hydrocarbon repeatability RSD in the current group of data samples;
wherein RSD represents the hydrogen repeatability RSD, C of the current group i Indicating the hydrogen content value in the ith data sample in the current group,
representing the average value of the hydrogen content values in all the data samples in the current group, wherein M represents the number of the data samples in the current group;
alternatively, RSD represents the total hydrocarbon repeatability RSD, C of the current group i Representing the total hydrocarbon content value in the ith data sample in the current group,
represents the average of the total hydrocarbon content values in all data samples within the current group, and M represents the number of data samples within the current group.
By grouping the data samples in advance and then calculating the hydrogen repeatability RSD and the total hydrocarbon repeatability RSD in each group, the calculation accuracy of the repeatability RSD can be effectively improved.
And 103, determining the stability of the transformer oil chromatographic on-line monitoring device according to the hydrogen repeatability RSD and the total hydrocarbon repeatability RSD.
Optionally, step 103 may include:
more specifically, step 1301 may include:
respectively calculating the average value of the hydrogen content and the average value of the total hydrocarbon content in the current group of data samples;
when the average hydrogen content value is less than or equal to a second preset value, and the hydrogen repeatability RSD of the current group of data samples is greater than 0 and less than or equal to a third preset value, determining that the calculation result of the hydrogen repeatability RSD in the current group of data samples is reliable;
when the hydrogen content average value is larger than the second preset value, and the hydrogen repeatability RSD of the current group of data samples is larger than 0 and smaller than or equal to a fourth preset value, determining that the calculation result of the hydrogen repeatability RSD in the current group of data samples is reliable; the third preset value is greater than the fourth preset value;
when the average value of the total hydrocarbon content is less than or equal to a second preset value, and the total hydrocarbon repeatability RSD of the current group of data samples is greater than 0 and less than or equal to a third preset value, determining that the calculation result of the total hydrocarbon repeatability RSD in the current group of data samples is reliable;
when the average value of the total hydrocarbon content is larger than a second preset value, and the total hydrocarbon repeatability RSD of the current group of data samples is larger than 0 and smaller than or equal to a fourth preset value, determining that the calculation result of the total hydrocarbon repeatability RSD in the current group of data samples is reliable;
if the calculation result of the hydrogen repeatability RSD in the current group of data samples is reliable, and the calculation result of the total hydrocarbon repeatability RSD is reliable, determining that the current group of data samples is reliable;
otherwise, the current set of data samples is determined to be unreliable.
Preferably, the second predetermined value may be any value between 40 μ L/L and 60 μ L/L, for example, 50 μ L/L. The third preset value may be any value between 6% and 15%, for example 10%. The fourth preset value is less than the third preset value, which may be 5%.
In particular, can be according to
Calculating the qualified rate of all the data samples;
wherein ,RSDPercent of pass Representing the yield of all sets of data samples, r representing the number of sets for which the data samples are reliable, and q representing the number of all sets.
And step 1303, determining that the stability of the transformer oil chromatography online monitoring device is qualified when the qualified rate is greater than or equal to a first preset value.
The first preset value may be set by a user according to a requirement of the user for the stability performance, which is not specifically limited in the embodiment of the present invention.
According to the embodiment of the invention, a plurality of data samples of the on-line monitoring device for the oil chromatography of the transformer in operation within a preset time are obtained; calculating the hydrogen repeatability RSD and the total hydrocarbon repeatability RSD of all data samples; according to the hydrogen repeatability RSD and the total hydrocarbon repeatability RSD, the stability of the transformer oil chromatography on-line monitoring device is determined, the stability of the transformer oil chromatography on-line monitoring device can be monitored in real time, the application effect of the transformer oil chromatography on-line monitoring device is improved, and the transformer oil chromatography on-line monitoring device is convenient to apply and popularize in actual engineering. The hydrogen repeatability RSD and the total hydrocarbon repeatability RSD of the data sample are calculated in a grouping mode, the stability of the transformer oil chromatography online monitoring device is determined according to corresponding judgment rules, and the monitoring accuracy of the stability is greatly improved. Meanwhile, the method can be used for directly monitoring the transformer oil chromatography online monitoring device in the running state to obtain a data sample, so that the analysis frequency of the stability of the transformer oil chromatography online monitoring device in the running state can be enhanced, and the monitoring efficiency of the stability can be improved.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
The following are embodiments of the apparatus of the invention, reference being made to the corresponding method embodiments described above for details which are not described in detail therein.
Fig. 3 shows a schematic structural diagram of a performance monitoring device of a transformer oil chromatography online monitoring device provided in an embodiment of the present invention, and for convenience of description, only the parts related to the embodiment of the present invention are shown, which are detailed as follows:
as shown in fig. 3, the performance monitoring device 3 of the transformer oil chromatography on-line monitoring device includes: an acquisition module 31, a calculation module 32 and a decision module 33.
The acquisition module 31 is used for acquiring a plurality of data samples of the transformer oil chromatography online monitoring device in a preset time;
a calculation module 32, configured to calculate hydrogen repeatability RSD and total hydrocarbon repeatability RSD of all data samples;
and the judging module 33 is used for determining the stability of the transformer oil chromatographic online monitoring device according to the hydrogen repeatability RSD and the total hydrocarbon repeatability RSD.
In a possible implementation manner, the calculation module 32 is configured to divide all the data samples into N groups, where each group includes M data samples; n is an integer greater than or equal to 1, and M is an integer greater than or equal to 5.
The calculating module 32 is further configured to calculate the hydrogen repeatability RSD and the total hydrocarbon repeatability RSD in each group of data samples respectively.
In a possible implementation manner, the determination module 33 is configured to determine the reliability of each set of data samples according to the hydrogen repeatability RSD and the total hydrocarbon repeatability RSD of each set of data samples.
The determining module 33 is further configured to calculate the qualified rate of all the data samples according to the reliability of all the data samples.
And the judging module 33 is further configured to determine that the stability of the transformer oil chromatography online monitoring device is qualified when the yield is greater than or equal to the first preset value.
In one possible implementation, the determining module 33 is configured to calculate the average value of the hydrogen content and the average value of the total hydrocarbon content in the current set of data samples, respectively. .
The determination module 33 is further configured to determine that a calculation result of the hydrogen repeatability RSD in the current group of data samples is reliable when the average hydrogen content is less than or equal to the second preset value, and the hydrogen repeatability RSD of the current group of data samples is greater than 0 and less than or equal to the third preset value;
when the hydrogen content average value is larger than a second preset value, and the hydrogen repeatability RSD of the current group of data samples is larger than 0 and is smaller than or equal to a fourth preset value, determining that the calculation result of the hydrogen repeatability RSD in the current group of data samples is reliable; the third preset value is greater than the fourth preset value;
when the average value of the total hydrocarbon content is less than or equal to a second preset value, and the total hydrocarbon repeatability RSD of the current group of data samples is greater than 0 and less than or equal to a third preset value, determining that the calculation result of the total hydrocarbon repeatability RSD in the current group of data samples is reliable;
when the average value of the total hydrocarbon content is larger than the second preset value, and the total hydrocarbon repeatability RSD of the current group of data samples is larger than 0 and smaller than or equal to a fourth preset value, determining that the calculation result of the total hydrocarbon repeatability RSD in the current group of data samples is reliable;
if the calculation result of the hydrogen repeatability RSD in the current group of data samples is reliable, and the calculation result of the total hydrocarbon repeatability RSD is reliable, determining that the current group of data samples is reliable;
otherwise, the decision block 34 is further configured to determine that the current set of data samples is unreliable.
In one possible implementation, the calculation module 32 is configured to calculate the data according to
The hydrogen or total hydrocarbon repeatability RSD in the current set of data samples was calculated.
Wherein RSD represents the hydrogen repeatability RSD, C of the current group i Indicating the hydrogen content value in the ith data sample in the current group,
represents the average of the hydrogen content values in all data samples within the current group, and M represents the number of data samples within the current group.
Alternatively, RSD represents the total hydrocarbon repeatability RSD, C of the current group i Indicates the total hydrocarbon content value in the ith data sample in the current group,
represents the average of the total hydrocarbon content values in all data samples within the current group, and M represents the number of data samples within the current group.
A computing module 32 for further processing the data according to
Calculating the qualified rate of all the data samples;
wherein ,RSDPercent of pass Representing the yield of all sets of data samples, r representing the number of sets for which the data samples are reliable, and q representing the number of all sets.
In a possible implementation, the calculation module 32 is further configured to check whether a missing item exists in each set of data samples.
The calculation module 32 is further configured to determine that the data samples of the current group are unreliable if there is a missing item in the data samples of the current group;
the calculating module 32 is further configured to calculate the hydrogen repeatability RSD and the total hydrocarbon repeatability RSD of the current group of data samples if there is no missing item in the current group of data samples, and determine the reliability of each group of data samples according to the hydrogen repeatability RSD and the total hydrocarbon repeatability RSD of each group of data samples.
The embodiment of the invention is characterized in that the acquisition module 31 is used for acquiring a plurality of data samples of the online monitoring device of the transformer oil chromatography in the process of transporting the transformer oil in a preset time; a calculation module 32, configured to calculate hydrogen repeatability RSD and total hydrocarbon repeatability RSD of all data samples; the determination module 33 is configured to determine the stability of the transformer oil chromatography online monitoring device according to the hydrogen repeatability RSD and the total hydrocarbon repeatability RSD, monitor the stability of the transformer oil chromatography online monitoring device in real time, improve the application effect of the transformer oil chromatography online monitoring device, and facilitate application and popularization in actual engineering. The hydrogen repeatability RSD and the total hydrocarbon repeatability RSD of the data sample are calculated in a grouping mode through the calculating module 32, the stability of the transformer oil chromatography online monitoring device is determined through the judging module 33 according to corresponding judging rules, and the monitoring accuracy of the stability is greatly improved.
Fig. 4 is a schematic diagram of a terminal according to an embodiment of the present invention. As shown in fig. 4, the terminal 4 of this embodiment includes: a processor 40, a memory 41 and a computer program 42 stored in said memory 41 and executable on said processor 40. The processor 40 executes the computer program 42 to implement the steps in the above-mentioned embodiments of the method for monitoring the stability performance of the on-line monitoring apparatus for transformer oil chromatography, such as the steps 101 to 103 shown in fig. 1. Alternatively, the processor 40, when executing the computer program 42, implements the functions of the modules/units in the above-mentioned device embodiments, such as the functions of the modules 31 to 33 shown in fig. 3.
Illustratively, the computer program 42 may be partitioned into one or more modules/units that are stored in the memory 41 and executed by the processor 40 to implement the present invention. The one or more modules/units may be a series of computer program instruction segments capable of performing certain functions, which are used to describe the execution of the computer program 42 in the terminal 4. For example, the computer program 42 may be divided into the modules 31 to 33 shown in fig. 3.
The terminal 4 may be a computing device such as a desktop computer, a notebook, a palm computer, and a cloud server. The terminal 4 may include, but is not limited to, a processor 40, a memory 41. Those skilled in the art will appreciate that fig. 4 is only an example of a terminal 4 and does not constitute a limitation of terminal 4 and may include more or less components than those shown, or some components in combination, or different components, for example, the terminal may also include input output devices, network access devices, buses, etc.
The Processor 40 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 41 may be an internal storage unit of the terminal 4, such as a hard disk or a memory of the terminal 4. The memory 41 may also be an external storage device of the terminal 4, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card) and the like provided on the terminal 4. Further, the memory 41 may also include both an internal storage unit and an external storage device of the terminal 4. The memory 41 is used for storing the computer program and other programs and data required by the terminal. The memory 41 may also be used to temporarily store data that has been output or is to be output.
It should be clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional units and modules is only used for illustration, and in practical applications, the above function distribution may be performed by different functional units and modules as needed, that is, the internal structure of the apparatus may be divided into different functional units or modules to perform all or part of the above described functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/terminal and method may be implemented in other ways. For example, the above-described apparatus/terminal embodiments are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit may be implemented in the form of hardware, or may also be implemented in the form of a software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the processes in the method of the embodiments of the present invention may also be implemented by a computer program to instruct related hardware, where the computer program may be stored in a computer readable storage medium, and when the computer program is executed by a processor, the steps of the embodiments of the method for monitoring the stability of the transformer oil chromatography online monitoring apparatus may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, read-Only Memory (ROM), random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain other components which may be suitably increased or decreased as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media which may not include electrical carrier signals and telecommunications signals in accordance with legislation and patent practice.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (10)
1. A stability performance monitoring method of a transformer oil chromatogram on-line monitoring device is characterized by comprising the following steps:
acquiring a plurality of data samples of the online monitoring device for the oil chromatography of the transformer in transport within a preset time; each data sample comprises a hydrogen content value and a total hydrocarbon content value;
calculating hydrogen repeatability RSD and total hydrocarbon repeatability RSD of all data samples;
and determining the stability of the transformer oil chromatography online monitoring device according to the hydrogen repeatability RSD and the total hydrocarbon repeatability RSD.
2. The method for monitoring the stability of the on-line transformer oil chromatography monitoring device according to claim 1, further comprising, before the calculating the hydrogen repeatability RSD and the total hydrocarbon repeatability RSD of all data samples:
dividing all the data samples into N groups, wherein each group comprises M data samples; n is an integer greater than or equal to 1, M is an integer greater than or equal to 5;
the calculation of hydrogen and total hydrocarbon repeatability RSD for all data samples included:
the hydrogen and total hydrocarbon repetitiveness RSD in each group of data samples were calculated separately.
3. The method for monitoring the stability of the transformer oil chromatography online monitoring device according to claim 2, wherein the determining the stability of the transformer oil chromatography online monitoring device according to the hydrogen repeatability RSD and the total hydrocarbon repeatability RSD comprises:
determining the reliability of each group of data samples according to the hydrogen repeatability RSD and the total hydrocarbon repeatability RSD of each group of data samples;
calculating the qualified rate of all the data samples according to the reliability of all the data samples;
and when the qualified rate is greater than or equal to a first preset value, determining that the stability of the transformer oil chromatography online monitoring device is qualified.
4. The method for monitoring the stability of the transformer oil chromatography online monitoring device according to claim 3, wherein the determining the reliability of each group of data samples according to the hydrogen repeatability RSD and the total hydrocarbon repeatability RSD of each group of data samples comprises:
respectively calculating the average value of the hydrogen content and the average value of the total hydrocarbon content in the current group of data samples;
when the hydrogen content average value is less than or equal to a second preset value, and the hydrogen repeatability RSD of the current group of data samples is greater than 0 and less than or equal to a third preset value, determining that the calculation result of the hydrogen repeatability RSD in the current group of data samples is reliable;
when the hydrogen content average value is larger than the second preset value, and the hydrogen repeatability RSD of the current group of data samples is larger than 0 and smaller than or equal to a fourth preset value, determining that the calculation result of the hydrogen repeatability RSD in the current group of data samples is reliable; the third preset value is greater than the fourth preset value;
when the average value of the total hydrocarbon content is less than or equal to the second preset value, and the total hydrocarbon repeatability RSD of the current group of data samples is greater than 0 and less than or equal to the third preset value, determining that the calculation result of the total hydrocarbon repeatability RSD in the current group of data samples is reliable;
when the average value of the total hydrocarbon content is larger than the second preset value, and the total hydrocarbon repeatability RSD of the current group of data samples is larger than 0 and smaller than or equal to a fourth preset value, determining that the calculation result of the total hydrocarbon repeatability RSD in the current group of data samples is reliable;
if the calculation result of the hydrogen repeatability RSD in the current group of data samples is reliable, and the calculation result of the total hydrocarbon repeatability RSD is reliable, determining that the current group of data samples is reliable;
otherwise, the current set of data samples is determined to be unreliable.
5. The method for monitoring the stability of the transformer oil chromatography online monitoring device according to claim 3, wherein the step of calculating the hydrogen repeatability RSD and the total hydrocarbon repeatability RSD in each group of data samples respectively comprises the following steps:
according to
Calculating hydrogen repeatability RSD or total hydrocarbon repeatability RSD in the current group of data samples;
wherein RSD represents the hydrogen repeatability RSD, C of the current group i Indicating the hydrogen content value in the ith data sample in the current group,
representing the average value of the hydrogen content values in all the data samples in the current group, wherein M represents the number of the data samples in the current group;
alternatively, RSD represents the total hydrocarbon repeatability RSD, C of the current group i Indicates the total hydrocarbon content value in the ith data sample in the current group,
representing the average of the total hydrocarbon content values in all data samples in the current group, and M represents the number of data samples in the current group;
calculating the qualified rate of all the group data samples according to the reliability of all the group data samples, including:
according to
Calculating the qualified rate of all the data samples;
wherein ,RSDPercent of pass Representing the yield of all sets of data samples, r representing the number of sets for which the data samples are reliable, and q representing the number of all sets.
6. The method for monitoring the stability of the on-line chromatographic monitor device of transformer oil according to claim 3, wherein after said dividing all the data samples into N groups, each group containing M data samples, the method further comprises:
checking whether a missing item exists in each group of data samples;
if the missing item exists in the data samples of the current group, determining that the data samples of the current group are unreliable;
and if the missing item does not exist in the data samples of the current group, calculating the hydrogen repeatability RSD and the total hydrocarbon repeatability RSD of the data samples of the current group, and determining the reliability of each group of data samples according to the hydrogen repeatability RSD and the total hydrocarbon repeatability RSD of each group of data samples.
7. The utility model provides a transformer oil chromatogram on-line monitoring device's stability can monitoring devices which characterized in that includes:
the acquisition module is used for acquiring a plurality of data samples monitored by the transformer oil chromatography online monitoring device within preset time;
the calculation module is used for calculating the hydrogen repeatability RSD and the total hydrocarbon repeatability RSD of all the data samples;
and the judgment module is used for determining the stability of the transformer oil chromatographic on-line monitoring device according to the hydrogen repeatability RSD and the total hydrocarbon repeatability RSD.
8. The device for monitoring the stability of the transformer oil chromatogram on-line monitoring device of claim 7,
the computing module is further configured to divide all the data samples into N groups, where each group includes M data samples; n is an integer greater than or equal to 1, M is an integer greater than or equal to 5;
the calculation module is further used for calculating the hydrogen repeatability RSD and the total hydrocarbon repeatability RSD in each group of data samples respectively.
9. A terminal comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the steps of the method according to any of the preceding claims 1 to 6 when executing the computer program.
10. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 6.
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