CN117825858A - Operation monitoring system of dry-type rectifier transformer - Google Patents
Operation monitoring system of dry-type rectifier transformer Download PDFInfo
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 27
- 238000012502 risk assessment Methods 0.000 claims abstract description 61
- 238000009413 insulation Methods 0.000 claims abstract description 39
- 238000012545 processing Methods 0.000 claims abstract description 34
- 230000004927 fusion Effects 0.000 claims abstract description 16
- 230000007613 environmental effect Effects 0.000 claims description 53
- 238000012423 maintenance Methods 0.000 claims description 42
- 238000011156 evaluation Methods 0.000 claims description 41
- 238000010606 normalization Methods 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 12
- 230000002159 abnormal effect Effects 0.000 claims description 11
- 238000005457 optimization Methods 0.000 claims description 8
- 230000035772 mutation Effects 0.000 claims description 7
- 230000001174 ascending effect Effects 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000012937 correction Methods 0.000 claims description 3
- 239000000428 dust Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 12
- 238000004891 communication Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 5
- 238000004364 calculation method Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Abstract
The invention relates to the technical field of transformer operation monitoring, in particular to an operation monitoring system of a dry-type rectifier transformer, which comprises a pipe conveying platform, an operation acquisition unit, a risk assessment unit, an operation influence unit, a safety feedback unit, a fusion operation unit and an early warning processing unit; according to the invention, through analyzing the high-load operation hazard and the insulation supervision of the dry-type rectifier transformer and integrating the historical operation data and the insulation data, the integral operation potential risk of the dry-type rectifier transformer is known, the data support is improved for the subsequent operation supervision of the dry-type rectifier transformer, and the operation fault risk assessment analysis is carried out on the fault risk data in an information feedback mode, so that whether the operation fault risk of the dry-type rectifier transformer is too high is judged, and the reasonable regulation and control force adjustment is carried out according to the information feedback condition, so that the operation safety and the supervision effect of the dry-type rectifier transformer are ensured, and the monitoring and early warning effect is improved.
Description
Technical Field
The invention relates to the technical field of operation monitoring of transformers, in particular to an operation monitoring system of a dry-type rectifier transformer.
Background
The dry type power transformer is a transformer suitable for a power system, can realize voltage lifting, has better environmental protection performance compared with an oil immersed transformer, can prevent accidents caused by oil pollution, has the advantages of simple structure, small volume, long service life and the like, and is widely applied to power generation, transformation and distribution systems;
however, when the operation of the dry type rectifier transformer is monitored, the potential risk caused by the historical high-load operation of the dry type rectifier transformer cannot be analyzed, and the potential state change of the dry type rectifier transformer is ignored, so that the operation state of the dry type rectifier transformer is difficult to evaluate and predict, the control force of the dry type rectifier transformer is not beneficial to reasonably adjusting, the monitoring early warning effect and the operation safety of the dry type rectifier transformer are reduced, the management effect of the dry type rectifier transformer is reduced, the operation risk trend of the dry type rectifier transformer cannot be predicted, and the operation efficiency and the operation stability of the dry type rectifier transformer are reduced;
in view of the above technical drawbacks, a solution is now proposed.
Disclosure of Invention
The invention aims to provide an operation monitoring system of a dry-type rectifier transformer, which solves the technical defects, and the invention analyzes the high-load operation hazard and the insulation supervision of the dry-type rectifier transformer, namely analyzes the historical operation data and the insulation data respectively, integrates the historical operation data and the insulation data at the same time, so as to know the overall operation potential risk of the dry-type rectifier transformer, is beneficial to improving the data support for the operation supervision of the subsequent dry-type rectifier transformer, is beneficial to reducing the influence of the potential risk on the operation of the dry-type rectifier transformer, so as to ensure the overall operation safety of the dry-type rectifier transformer, and performs operation fault risk assessment analysis on the fault risk data in an information feedback mode so as to judge whether the operation fault risk of the dry-type rectifier transformer is too high, so that reasonable management and control force adjustment can be made according to the information feedback condition, and the operation safety and supervision effect of the dry-type rectifier transformer can be ensured.
The aim of the invention can be achieved by the following technical scheme: an operation monitoring system of a dry-type rectifier transformer comprises a pipe conveying platform, an operation acquisition unit, a risk assessment unit, an operation influence unit, a safety feedback unit, a fusion operation unit and an early warning processing unit;
when the operation platform generates a monitoring instruction, the monitoring instruction is sent to an operation acquisition unit, the operation acquisition unit immediately acquires historical operation data and insulation data of the dry-type rectifier transformer after receiving the monitoring instruction, the historical operation data comprises an operation load evaluation value and a load supervision value, the insulation data comprises an environment interference value and a line risk value, the historical operation data and the insulation data are respectively sent to a risk evaluation unit and an operation influence unit, the risk evaluation unit immediately carries out operation abnormal risk evaluation analysis on the historical operation data after receiving the historical operation data, and the obtained potential operation risk coefficient Q is sent to a safety feedback unit;
the operation influence unit immediately carries out operation conveying influence evaluation operation on the insulation data after receiving the insulation data, and sends the obtained insulation maintenance signal to the early warning processing unit;
the safety feedback unit immediately acquires maintenance data of the dry-type rectifier transformer after receiving the potential operation risk coefficient Q, the maintenance data represent maintenance values, and performs overall operation safety supervision feedback analysis on the maintenance data, and the obtained operation influence evaluation coefficient P is sent to the fusion operation unit;
and the fusion operation unit immediately acquires fault risk data of the dry-type rectifier transformer after receiving the operation influence evaluation coefficient P, wherein the fault risk data comprises an operation characteristic value and an operation representation value, performs operation fault risk evaluation analysis on the fault risk data, and sends an obtained pipe adjustment signal and an obtained optimization signal to the early warning processing unit.
Preferably, the risk assessment unit performs an abnormal operation risk assessment analysis process as follows:
acquiring the time length from the starting operation time to the ending operation time of the dry rectifier transformer, marking the time length as a time threshold, acquiring an operation load evaluation value and a load supervision value of the dry rectifier transformer in the time threshold, wherein the operation load evaluation value represents the product value obtained by carrying out data normalization processing on the maximum load value and the time length corresponding to the operation of the maximum load value in the high load operation time period of the dry rectifier transformer, the load supervision value represents the ratio obtained by carrying out data normalization processing on the average value of the interval time length corresponding to the high load operation times and the high load operation times in the time length from the moment when the dry rectifier transformer is put into use to the current moment, and marking the operation load evaluation value and the load supervision value as YF and FJ respectively;
according to the formulaAnd obtaining potential running risk coefficients, wherein a1 and a2 are preset scale factor coefficients of a running load evaluation value and a load supervision value respectively, a1 and a2 are positive numbers larger than zero, a3 is a preset correction factor coefficient, the value is 1.772, and Q is the potential running risk coefficient.
Preferably, the operation of the operation influence unit for evaluating the operation influence of the operation is as follows:
s1: acquiring an environmental interference value of the dry-type rectifier transformer in a time threshold, wherein the environmental interference value represents the number of the corresponding numerical value of the environmental parameter exceeding a preset threshold, and then carrying out data normalization processing on the environmental parameter and the part of the corresponding numerical value of the environmental parameter exceeding the preset threshold to obtain a product value, wherein the environmental parameter comprises a temperature multiplier value and a humidity risk value, the temperature multiplier value represents the product value of the time length of a line segment, which is positioned above the preset temperature characteristic curve, corresponding to the temperature characteristic curve and the average value of the oxygen concentration, after carrying out data normalization processing, and the humidity risk value represents the product value of the part of the average value of the environmental humidity exceeding the preset average value of the environmental humidity and the average value of the environmental dust concentration, after carrying out data normalization processing;
s2: obtaining a line risk value of the dry-type rectifier transformer in a time threshold, wherein the line risk value represents a product value obtained by carrying out data normalization on the total number of line bulges and the total length of cracks, and then carrying out data normalization on the product value obtained by carrying out data normalization on the product value and a line self value, and the line self value represents a product value obtained by carrying out data normalization on a difference value between a time from a line in use time to a current time and a maximum operation temperature and a minimum operation temperature of the line;
s3: comparing the environmental interference value and the line risk value with a preset environmental interference value threshold value and a preset line risk value threshold value which are recorded and stored in the environmental interference value and the line risk value, and analyzing the environmental interference value and the line risk value:
if the environmental interference value is smaller than the preset environmental interference value threshold and the line risk value is smaller than the preset line risk value threshold, no signal is generated;
and if the environmental interference value is greater than or equal to a preset environmental interference value threshold or the line risk value is greater than or equal to a preset line risk value threshold, generating an insulation maintenance signal.
Preferably, the overall operation safety supervision feedback analysis process of the safety feedback unit is as follows:
acquiring a potential operation risk coefficient Q of the dry-type rectifier transformer in a time threshold, and simultaneously calling an environment interference value and a line risk value from an operation influence unit, and acquiring a maintenance value of the dry-type rectifier transformer in the time threshold, wherein the maintenance value represents a product value obtained by carrying out data normalization processing on the maintenance times of the dry-type rectifier transformer and the number average value of maintenance items, the maintenance items comprise cleaning and oil replacement, and the environment interference value, the line risk value and the maintenance value are respectively marked as HG, XF and WH;
according to the formulaObtaining operation influence assessment coefficients, wherein f1, f2, f3 and f4 are preset weight factor coefficients of potential operation risk coefficients, environment interference values, line risk values and maintenance values respectively, f1, f2, f3 and f4 are positive numbers larger than zero, f5 is a preset fault tolerance factor coefficient, the value is 2.182, and P is the operation influence assessment coefficient.
Preferably, the operation fault risk assessment analysis process of the fusion operation unit is as follows:
t1: acquiring an operation characteristic value of the dry-type rectifier transformer in a time threshold, wherein the operation characteristic value represents the number of the operation parameter corresponding to the number exceeding a preset threshold, the operation parameter comprises a power supply voltage average value and power supply voltage fluctuation times, the operation characteristic value is compared with a stored preset operation characteristic value threshold for analysis, and if the operation characteristic value is larger than the preset operation characteristic value threshold, the part of the operation characteristic value larger than the preset operation characteristic value threshold is marked as a supply risk value GF;
t2: acquiring an operation representation value of the dry-type rectifier transformer in a time threshold, wherein the operation representation value represents the number of the values corresponding to the representation parameters exceeding a preset threshold, the representation parameters comprise abnormal sound average values and vibration amplitude average values, the operation representation value is compared with a stored preset operation representation value threshold for analysis, and a part of the operation representation value larger than the preset operation representation value threshold is marked as a characteristic mutation value TB;
t3: according to the formulaObtaining a fault risk assessment coefficient, wherein v1, v2 and v3 are respectively preset influence factor coefficients of a supply risk value, a characteristic mutation value and an operation influence assessment coefficient, v4 is a compensation factor coefficient, v1, v2, v3 and v4 are positive numbers larger than zero, G is a fault risk assessment coefficient, and the fault risk assessment coefficient G is compared with a preset fault risk assessment coefficient threshold value recorded and stored in the fault risk assessment coefficient G:
if the ratio between the fault risk assessment coefficient G and the preset fault risk assessment coefficient threshold is greater than or equal to 1, generating a pipe adjustment signal;
if the ratio between the fault risk assessment coefficient G and the preset fault risk assessment coefficient threshold is smaller than 1, generating a feedback instruction.
Preferably, when the fusion running unit generates a feedback instruction:
acquiring a fault risk assessment coefficient G corresponding to the feedback signals, simultaneously acquiring a fault risk assessment coefficient of a dry-type rectifier transformer corresponding to m historical feedback signals, wherein m is a natural number larger than zero, taking the number of the fault risk assessment coefficients as an X axis, taking the fault risk assessment coefficient as a Y axis, establishing a rectangular coordinate system, drawing a fault risk assessment coefficient curve in a dot drawing manner, further acquiring the ratio of the total length corresponding to an ascending line segment to the total length corresponding to a descending line segment of the fault risk assessment coefficient curve, marking the ratio as a trend risk coefficient, and comparing the trend risk coefficient with a preset trend risk coefficient threshold value recorded and stored in the trend risk coefficient to analyze the trend risk coefficient:
if the trend risk coefficient is smaller than or equal to a preset trend risk coefficient threshold value, no signal is generated;
and if the trend risk coefficient is greater than the preset trend risk coefficient threshold value, generating an optimization signal.
The beneficial effects of the invention are as follows:
(1) According to the invention, through analyzing the high-load operation hazard and the insulation supervision of the dry-type rectifier transformer, namely respectively analyzing the historical operation data and the insulation data, and integrating the historical operation data and the insulation data at the same time, the potential risk of the whole operation of the dry-type rectifier transformer is known, the data support is improved for the operation supervision of the subsequent dry-type rectifier transformer, the influence of the potential risk on the operation of the dry-type rectifier transformer is reduced, the operation safety of the whole dry-type rectifier transformer is ensured, and the operation failure risk assessment analysis is carried out on the failure risk data in an information feedback mode to judge whether the operation failure risk of the dry-type rectifier transformer is too high or not, so that reasonable management and control force adjustment is carried out according to the information feedback condition, and the operation safety and supervision effect of the dry-type rectifier transformer are ensured;
(2) According to the invention, the operation fault trend of the normal dry-type rectifier transformer is analyzed in a deep analysis mode, so that the dry-type rectifier transformer is optimized in time, the operation stability of the dry-type rectifier transformer is ensured, and the operation risk trend is analyzed by combining the historical information, so that the accuracy of an analysis result and the management rationality of the dry-type rectifier transformer are improved, and the monitoring and early warning effects of the dry-type rectifier transformer are improved.
Drawings
The invention is further described below with reference to the accompanying drawings;
FIG. 1 is a flow chart of the system of the present invention;
fig. 2 is a partial analysis reference diagram of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one:
referring to fig. 1 to 2, the invention discloses an operation monitoring system of a dry rectifier transformer, which comprises a pipe conveying platform, an operation acquisition unit, a risk assessment unit, an operation influence unit, a safety feedback unit, a fusion operation unit and an early warning processing unit, wherein the pipe conveying platform is in one-way communication connection with the operation acquisition unit, the operation acquisition unit is in one-way communication connection with the risk assessment unit and the operation influence unit, the operation influence unit is in one-way communication connection with the early warning processing unit, the risk assessment unit and the operation influence unit are in one-way communication connection with the safety feedback unit, the safety feedback unit is in one-way communication connection with the fusion operation unit, and the fusion operation unit is in one-way communication connection with the early warning processing unit;
when the operation platform generates a monitoring instruction, the monitoring instruction is sent to an operation acquisition unit, the operation acquisition unit immediately acquires historical operation data and insulation data of the dry-type rectifier transformer after receiving the monitoring instruction, the historical operation data comprises an operation load evaluation value and a load supervision value, the insulation data comprises an environment interference value and a line risk value, the historical operation data and the insulation data are respectively sent to a risk evaluation unit and an operation influence unit, the risk evaluation unit immediately carries out operation abnormal risk evaluation analysis on the historical operation data after receiving the historical operation data so as to know potential operation risk conditions generated by the historical high-load operation of the dry-type rectifier transformer, so that the operation risk of the subsequent dry-type rectifier transformer is improved, the operation control force of the dry-type rectifier transformer is reasonably adjusted, and the specific operation abnormal risk evaluation analysis process is as follows:
acquiring the time length from the starting operation time to the ending operation time of the dry rectifier transformer, marking the time length as a time threshold, acquiring an operation load evaluation value and a load supervision value of the dry rectifier transformer in the time threshold, wherein the operation load evaluation value represents the product value obtained by carrying out data normalization processing on the maximum load value and the time length corresponding to the operation of the maximum load value in the high load operation time period of the dry rectifier transformer, the load supervision value represents the ratio obtained by carrying out data normalization processing on the average value of the interval time length corresponding to the high load operation times and the high load operation times in the time length from the moment when the dry rectifier transformer is put into use to the current moment, and the operation load evaluation value and the load supervision value are two influence parameters reflecting the operation risk of the dry rectifier transformer, and the larger the operation load evaluation value and the load supervision value are, the greater the operation abnormal risk of the dry rectifier transformer is, and the operation load evaluation value and the load supervision value are respectively marked as YF and FJ;
according to the formulaObtaining a potential operation risk coefficient, wherein a1 and a2 are preset scale factor coefficients of an operation load evaluation value and a load supervision value respectively, the scale factor coefficients are used for correcting deviation of each parameter in a formula calculation process, so that a calculation result is more accurate, a1 and a2 are positive numbers larger than zero, a3 is a preset correction factor coefficient, the value is 1.772, Q is the potential operation risk coefficient, the potential operation risk coefficient Q is sent to a safety feedback unit, the coefficient is a specific value obtained by quantizing each parameter, the subsequent comparison is convenient, and corresponding coefficients are preliminarily set according to the quantity of sample data and the sample data of each group by a person skilled in the art as long as the scale relation between the parameter and the quantized value is not influenced;
the operation influence unit immediately carries out operation conveying influence evaluation operation on the insulation data after receiving the insulation data so as to know the operation influence condition of the insulation data of the dry-type rectifier transformer, so that reasonable management and control adjustment can be carried out by combining the insulation condition, the whole operation safety of the dry-type rectifier transformer is ensured, and the specific operation conveying influence evaluation operation process is as follows:
acquiring an environmental interference value of the dry-type rectifier transformer in a time threshold, wherein the environmental interference value represents the number of the environmental parameter corresponding to the number exceeding a preset threshold, and then carrying out data normalization processing on the environmental parameter corresponding to the environmental parameter and the part exceeding the preset threshold to obtain a product value, wherein the environmental parameter comprises a temperature multiplier value, a humidity risk value and the like, the temperature multiplier value represents the product value obtained by carrying out data normalization processing on the time length corresponding to the line segment above the preset temperature characteristic curve and the oxygen concentration mean value, the humidity risk value represents the product value obtained by carrying out data normalization processing on the part of the environmental humidity mean value exceeding the preset environmental humidity mean value and the environmental dust concentration mean value, and the larger the numerical value of the environmental interference value is, the higher the insulation abnormality risk of the dry-type rectifier transformer is;
obtaining a line risk value of the dry-type rectifier transformer in a time threshold, wherein the line risk value represents a product value obtained by carrying out data normalization on the total number of line bulges and the total length of cracks, and then carrying out data normalization on the product value obtained by carrying out data normalization on the product value and a line self value, and the line self value represents a product value obtained by carrying out data normalization on a difference value between the time from the moment when the line is put into use to the current moment and the maximum operation temperature and the minimum operation temperature of the line, and the fact that the larger the value of the line risk value is, the higher the insulation abnormal risk of the dry-type rectifier transformer is;
comparing the environmental interference value and the line risk value with a preset environmental interference value threshold value and a preset line risk value threshold value which are recorded and stored in the environmental interference value and the line risk value, and analyzing the environmental interference value and the line risk value:
if the environmental interference value is smaller than the preset environmental interference value threshold and the line risk value is smaller than the preset line risk value threshold, no signal is generated;
if the environmental interference value is greater than or equal to a preset environmental interference value threshold value or the line risk value is greater than or equal to a preset line risk value threshold value, generating an insulation maintenance signal, sending the insulation maintenance signal to an early warning processing unit, and immediately displaying the number of the dry rectifier transformer corresponding to the insulation maintenance signal by the early warning processing unit after receiving the insulation maintenance signal, so that insulation maintenance management is carried out on the dry rectifier transformer in time, and the leakage risk of the dry rectifier transformer is reduced.
Embodiment two:
the safety feedback unit immediately acquires maintenance data of the dry-type rectifier transformer after receiving the potential operation risk coefficient Q, the maintenance data represents maintenance values, and overall operation safety supervision feedback analysis is carried out on the maintenance data so as to know the overall operation potential risk of the dry-type rectifier transformer, wherein the specific overall operation safety supervision feedback analysis process is as follows:
acquiring a potential operation risk coefficient Q of the dry-type rectifier transformer in a time threshold, and simultaneously calling an environment interference value and a line risk value from an operation influence unit, and acquiring a maintenance value of the dry-type rectifier transformer in the time threshold, wherein the maintenance value represents a product value obtained by carrying out data normalization processing on the maintenance times of the dry-type rectifier transformer and the number average value of maintenance items, the maintenance items comprise cleaning, oil replacement and the like, and the environment interference value, the line risk value and the maintenance value are respectively marked as HG, XF and WH;
according to the formulaObtaining operation influence assessment coefficients, wherein f1, f2, f3 and f4 are preset weight factor coefficients of potential operation risk coefficients, environment interference values, line risk values and maintenance values respectively, f1, f2, f3 and f4 are positive numbers larger than zero, f5 is a preset fault-tolerant factor coefficient, the value is 2.182, P is the operation influence assessment coefficient, and the operation influence assessment coefficient P is sent to a fusion operation unit;
the fusion operation unit immediately acquires fault risk data of the dry-type rectifier transformer after receiving the operation influence evaluation coefficient P, wherein the fault risk data comprises an operation characteristic value and an operation representation value, and performs operation fault risk evaluation analysis on the fault risk data to judge whether the operation fault risk of the dry-type rectifier transformer is too high or not so as to make reasonable regulation and control force adjustment according to information feedback conditions, so as to ensure the operation safety and the supervision effect of the dry-type rectifier transformer, and the specific operation fault risk evaluation analysis process is as follows:
acquiring an operation characteristic value of the dry-type rectifier transformer in a time threshold, wherein the operation characteristic value represents the number of the operation parameters, such as a power supply voltage average value, a power supply voltage fluctuation frequency and the like, exceeding a preset threshold value, comparing the operation characteristic value with a stored preset operation characteristic value threshold value, and if the operation characteristic value is larger than the preset operation characteristic value threshold value, marking the part of the operation characteristic value larger than the preset operation characteristic value threshold value as a supply risk value, wherein the label is GF, and the larger the value of the supply risk value GF is, the higher the fault risk of the dry-type rectifier transformer is;
acquiring an operation representation value of the dry-type rectifier transformer in a time threshold, wherein the operation representation value represents the number of the values corresponding to the representation parameters exceeding a preset threshold, the representation parameters comprise abnormal sound average values, vibration amplitude average values and the like, comparing the operation representation value with a stored preset operation representation value threshold for analysis, marking a part with the operation representation value larger than the preset operation representation value threshold as a characteristic mutation value, marking as a TB, and describing that the larger the value of the characteristic mutation value TB is, the higher the fault risk of the dry-type rectifier transformer is;
according to the formulaObtaining a fault risk assessment coefficient, wherein v1, v2 and v3 are respectively preset influence factor coefficients of a supply risk value, a characteristic mutation value and an operation influence assessment coefficient, v4 is a compensation factor coefficient, v1, v2, v3 and v4 are positive numbers larger than zero, G is a fault risk assessment coefficient, and the fault risk assessment coefficient G is compared with a preset fault risk assessment coefficient threshold value recorded and stored in the fault risk assessment coefficient G:
if the ratio between the fault risk assessment coefficient G and the preset fault risk assessment coefficient threshold is greater than or equal to 1, generating a tube modulation signal, and sending the tube modulation signal to an early warning processing unit, wherein the early warning processing unit immediately displays the serial number of the dry rectifier transformer corresponding to the tube modulation signal when receiving the tube modulation signal so as to make reasonable regulation and control force adjustment according to the information feedback condition, thereby ensuring the operation safety and the supervision effect of the dry rectifier transformer;
if the ratio between the fault risk assessment coefficient G and the preset fault risk assessment coefficient threshold is smaller than 1, generating a feedback instruction, when a feedback signal is generated, acquiring the fault risk assessment coefficient G corresponding to the feedback signal, simultaneously acquiring the fault risk assessment coefficients of the dry rectifier transformers corresponding to the historical m feedback signals, wherein m is a natural number larger than zero, establishing a rectangular coordinate system by taking the number of the fault risk assessment coefficients as an X axis and taking the fault risk assessment coefficients as a Y axis, drawing a fault risk assessment coefficient curve in a dot drawing manner, further acquiring the ratio between the total length corresponding to an ascending line segment and the total length corresponding to a descending line segment of the fault risk assessment coefficient curve, marking the ratio as a trend risk coefficient, and comparing the trend risk coefficient with the preset trend risk coefficient threshold stored in the trend risk coefficient by recording the trend risk coefficient.
If the trend risk coefficient is smaller than or equal to a preset trend risk coefficient threshold value, no signal is generated;
if the trend risk coefficient is larger than a preset trend risk coefficient threshold value, generating an optimization signal, sending the optimization signal to an early warning processing unit, and immediately displaying the number of the dry-type rectifier transformer corresponding to the optimization signal by the early warning processing unit after receiving the optimization signal, so that the dry-type rectifier transformer is optimized in time to ensure the running stability of the dry-type rectifier transformer, and the running risk trend is analyzed by combining the historical information, thereby being beneficial to improving the accuracy of an analysis result and the management rationality of the dry-type rectifier transformer and improving the monitoring and early warning effects of the dry-type rectifier transformer;
in summary, the high-load operation hazard and insulation supervision of the dry-type rectifier transformer are analyzed, namely, historical operation data and insulation data are respectively analyzed, meanwhile, the historical operation data and the insulation data are integrated, so that the overall operation potential risk of the dry-type rectifier transformer is known, the data support is improved for the operation supervision of the subsequent dry-type rectifier transformer, meanwhile, the influence of the potential risk on the operation of the dry-type rectifier transformer is reduced, the overall operation safety of the dry-type rectifier transformer is ensured, the operation fault risk assessment analysis is carried out on fault risk data in an information feedback mode, whether the operation fault risk of the dry-type rectifier transformer is too high or not is judged, reasonable control force adjustment is carried out according to the information feedback condition, the operation safety and supervision effect of the dry-type rectifier transformer are ensured, the operation fault trend of the normal dry-type rectifier transformer is analyzed in a deep analysis mode, the operation stability of the dry-type rectifier transformer is ensured, the operation trend is analyzed in time, the improvement of the analysis result and the management of the dry-type rectifier transformer are facilitated, and the management and the rationalization and supervision effect of the dry-type rectifier transformer are improved.
The size of the threshold is set for ease of comparison, and regarding the size of the threshold, the number of cardinalities is set for each set of sample data depending on how many sample data are and the person skilled in the art; as long as the proportional relation between the parameter and the quantized value is not affected.
The above formulas are all formulas obtained by collecting a large amount of data for software simulation and selecting a formula close to the true value, and coefficients in the formulas are set by a person skilled in the art according to practical situations, and the above is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is within the technical scope of the present invention, and the technical scheme and the inventive concept according to the present invention are equivalent to or changed and are all covered in the protection scope of the present invention.
Claims (6)
1. The operation monitoring system of the dry-type rectifier transformer is characterized by comprising a pipe conveying platform, an operation acquisition unit, a risk assessment unit, an operation influence unit, a safety feedback unit, a fusion operation unit and an early warning processing unit;
when the operation platform generates a monitoring instruction, the monitoring instruction is sent to an operation acquisition unit, the operation acquisition unit immediately acquires historical operation data and insulation data of the dry-type rectifier transformer after receiving the monitoring instruction, the historical operation data comprises an operation load evaluation value and a load supervision value, the insulation data comprises an environment interference value and a line risk value, the historical operation data and the insulation data are respectively sent to a risk evaluation unit and an operation influence unit, the risk evaluation unit immediately carries out operation abnormal risk evaluation analysis on the historical operation data after receiving the historical operation data, and the obtained potential operation risk coefficient Q is sent to a safety feedback unit;
the operation influence unit immediately carries out operation conveying influence evaluation operation on the insulation data after receiving the insulation data, and sends the obtained insulation maintenance signal to the early warning processing unit;
the safety feedback unit immediately acquires maintenance data of the dry-type rectifier transformer after receiving the potential operation risk coefficient Q, the maintenance data represent maintenance values, and performs overall operation safety supervision feedback analysis on the maintenance data, and the obtained operation influence evaluation coefficient P is sent to the fusion operation unit;
and the fusion operation unit immediately acquires fault risk data of the dry-type rectifier transformer after receiving the operation influence evaluation coefficient P, wherein the fault risk data comprises an operation characteristic value and an operation representation value, performs operation fault risk evaluation analysis on the fault risk data, and sends an obtained pipe adjustment signal and an obtained optimization signal to the early warning processing unit.
2. The operation monitoring system of claim 1, wherein the risk assessment unit performs an abnormal operation risk assessment analysis process as follows:
acquiring the time length from the starting operation time to the ending operation time of the dry rectifier transformer, marking the time length as a time threshold, acquiring an operation load evaluation value and a load supervision value of the dry rectifier transformer in the time threshold, wherein the operation load evaluation value represents the product value obtained by carrying out data normalization processing on the maximum load value and the time length corresponding to the operation of the maximum load value in the high load operation time period of the dry rectifier transformer, the load supervision value represents the ratio obtained by carrying out data normalization processing on the average value of the interval time length corresponding to the high load operation times and the high load operation times in the time length from the moment when the dry rectifier transformer is put into use to the current moment, and marking the operation load evaluation value and the load supervision value as YF and FJ respectively;
according to the formulaAnd obtaining potential running risk coefficients, wherein a1 and a2 are preset scale factor coefficients of a running load evaluation value and a load supervision value respectively, a1 and a2 are positive numbers larger than zero, a3 is a preset correction factor coefficient, the value is 1.772, and Q is the potential running risk coefficient.
3. The operation monitoring system of a dry rectifier transformer according to claim 1, wherein the operation transfer influence evaluation operation process of the operation influence unit is as follows:
s1: acquiring an environmental interference value of the dry-type rectifier transformer in a time threshold, wherein the environmental interference value represents the number of the corresponding numerical value of the environmental parameter exceeding a preset threshold, and then carrying out data normalization processing on the environmental parameter and the part of the corresponding numerical value of the environmental parameter exceeding the preset threshold to obtain a product value, wherein the environmental parameter comprises a temperature multiplier value and a humidity risk value, the temperature multiplier value represents the product value of the time length of a line segment, which is positioned above the preset temperature characteristic curve, corresponding to the temperature characteristic curve and the average value of the oxygen concentration, after carrying out data normalization processing, and the humidity risk value represents the product value of the part of the average value of the environmental humidity exceeding the preset average value of the environmental humidity and the average value of the environmental dust concentration, after carrying out data normalization processing;
s2: obtaining a line risk value of the dry-type rectifier transformer in a time threshold, wherein the line risk value represents a product value obtained by carrying out data normalization on the total number of line bulges and the total length of cracks, and then carrying out data normalization on the product value obtained by carrying out data normalization on the product value and a line self value, and the line self value represents a product value obtained by carrying out data normalization on a difference value between a time from a line in use time to a current time and a maximum operation temperature and a minimum operation temperature of the line;
s3: comparing the environmental interference value and the line risk value with a preset environmental interference value threshold value and a preset line risk value threshold value which are recorded and stored in the environmental interference value and the line risk value, and analyzing the environmental interference value and the line risk value:
if the environmental interference value is smaller than the preset environmental interference value threshold and the line risk value is smaller than the preset line risk value threshold, no signal is generated;
and if the environmental interference value is greater than or equal to a preset environmental interference value threshold or the line risk value is greater than or equal to a preset line risk value threshold, generating an insulation maintenance signal.
4. The operation monitoring system of a dry rectifier transformer according to claim 1, wherein the overall operation safety supervision feedback analysis process of the safety feedback unit is as follows:
acquiring a potential operation risk coefficient Q of the dry-type rectifier transformer in a time threshold, and simultaneously calling an environment interference value and a line risk value from an operation influence unit, and acquiring a maintenance value of the dry-type rectifier transformer in the time threshold, wherein the maintenance value represents a product value obtained by carrying out data normalization processing on the maintenance times of the dry-type rectifier transformer and the number average value of maintenance items, the maintenance items comprise cleaning and oil replacement, and the environment interference value, the line risk value and the maintenance value are respectively marked as HG, XF and WH;
according to the formulaObtaining operation influence assessment coefficients, wherein f1, f2, f3 and f4 are preset weight factor coefficients of potential operation risk coefficients, environment interference values, line risk values and maintenance values respectively, f1, f2, f3 and f4 are positive numbers larger than zero, f5 is a preset fault tolerance factor coefficient, the value is 2.182, and P is the operation influence assessment coefficient.
5. The operation monitoring system of claim 1, wherein the operation fault risk assessment analysis process of the fusion operation unit is as follows:
t1: acquiring an operation characteristic value of the dry-type rectifier transformer in a time threshold, wherein the operation characteristic value represents the number of the operation parameter corresponding to the number exceeding a preset threshold, the operation parameter comprises a power supply voltage average value and power supply voltage fluctuation times, the operation characteristic value is compared with a stored preset operation characteristic value threshold for analysis, and if the operation characteristic value is larger than the preset operation characteristic value threshold, the part of the operation characteristic value larger than the preset operation characteristic value threshold is marked as a supply risk value GF;
t2: acquiring an operation representation value of the dry-type rectifier transformer in a time threshold, wherein the operation representation value represents the number of the values corresponding to the representation parameters exceeding a preset threshold, the representation parameters comprise abnormal sound average values and vibration amplitude average values, the operation representation value is compared with a stored preset operation representation value threshold for analysis, and a part of the operation representation value larger than the preset operation representation value threshold is marked as a characteristic mutation value TB;
t3: according to the formulaObtaining a fault risk assessment coefficient, wherein v1, v2 and v3 are respectively preset influence factor coefficients of a supply risk value, a characteristic mutation value and an operation influence assessment coefficient, v4 is a compensation factor coefficient, v1, v2, v3 and v4 are positive numbers larger than zero, G is a fault risk assessment coefficient, and the fault risk assessment coefficient G is compared with a preset fault risk assessment coefficient threshold value recorded and stored in the fault risk assessment coefficient G:
if the ratio between the fault risk assessment coefficient G and the preset fault risk assessment coefficient threshold is greater than or equal to 1, generating a pipe adjustment signal;
if the ratio between the fault risk assessment coefficient G and the preset fault risk assessment coefficient threshold is smaller than 1, generating a feedback instruction.
6. The system of claim 5, wherein the fusion operation unit generates the feedback command when:
acquiring a fault risk assessment coefficient G corresponding to the feedback signals, simultaneously acquiring a fault risk assessment coefficient of a dry-type rectifier transformer corresponding to m historical feedback signals, wherein m is a natural number larger than zero, taking the number of the fault risk assessment coefficients as an X axis, taking the fault risk assessment coefficient as a Y axis, establishing a rectangular coordinate system, drawing a fault risk assessment coefficient curve in a dot drawing manner, further acquiring the ratio of the total length corresponding to an ascending line segment to the total length corresponding to a descending line segment of the fault risk assessment coefficient curve, marking the ratio as a trend risk coefficient, and comparing the trend risk coefficient with a preset trend risk coefficient threshold value recorded and stored in the trend risk coefficient to analyze the trend risk coefficient:
if the trend risk coefficient is smaller than or equal to a preset trend risk coefficient threshold value, no signal is generated;
and if the trend risk coefficient is greater than the preset trend risk coefficient threshold value, generating an optimization signal.
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