CN104090079A - Transmitting transformer control system based on improved three-ratio method - Google Patents
Transmitting transformer control system based on improved three-ratio method Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 82
- 238000001514 detection method Methods 0.000 claims abstract description 62
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- 239000004215 Carbon black (E152) Substances 0.000 claims abstract description 47
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 47
- 238000004519 manufacturing process Methods 0.000 claims abstract description 34
- HSFWRNGVRCDJHI-UHFFFAOYSA-N Acetylene Chemical compound C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 claims description 22
- 239000000203 mixture Substances 0.000 claims description 13
- 230000006872 improvement Effects 0.000 claims description 10
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- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 4
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 7
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- -1 C2H4 Chemical compound 0.000 description 4
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 4
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/62—Testing of transformers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1281—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of liquids or gases
Abstract
The invention discloses a transmitting transformer control system based on an improved three-ratio method. The transmitting transformer control system comprises a transmitting transformer ECU (electronic control unit), a memory unit, three detection modules, a three-ratio method coding judgment module and an early warning and displaying unit, wherein a component concentration detection module can be used for cyclically detecting the concentration of each gas component and sequentially comparing each concentration value Di with a limit value Di0 corresponding to each gas component; a hydrocarbon content detecting module and a gas production rate detecting module are used for judging early warning results in different grades according to a numerical relationship of the total hydrocarbon content C and the total hydrocarbon absolute gas production rate V of a transformer and threshold values; the transmitting transformer ECU is used for manually or automatically judging whether the three-ratio method coding judgment needs to be performed based on the early warning results; and when the three-ratio method operation needs to be performed to specifically judge the failure type, the three-ratio method coding judgment module is started, and needed characteristic gas component values are extracted to judge the corresponding failure type.
Description
Technical field
The present invention relates to a kind of transmitting transformer control system of improving three-ratio method, belong to technology of transmission of electricity field.
Background technology
Along with the increase of power equipment capacity and the expansion of electrical network scale, the safe operation of electric system and power supply reliability to be had higher requirement, alarm bell has been beaten in the various countries that in recent years occur accident Ye Wei China electric system of having a power failure on a large scale.With a very important position in electric system of transformer, is one of electrical equipment most important and the most expensive in electric system, and the safe reliability of its operation is directly connected to the safety and stablization of electric system.Therefore, improve transformer particularly large-scale power transformer reliability of operation the safe and reliable operation tool of whole electrical network is of great significance.Gases Dissolved in Transformer Oil is analyzed the effective means that (DGA) technology is considered to Diagnosis for Power Transformer initial failure always.It can find the inner insulation fault existing of transformer in time, is conducive to promote the transition to State Maintenance mode by periodic maintenance mode, thereby has been subject to application widely.The principle of DGA technology is that the generation speed based on any specific hydrocarbon gas changes with temperature, under specified temp, often has the factor of created gase of a certain gas to occur maximal value, along with temperature raises, the gas of factor of created gase maximum is followed successively by CH4, C2H6, C2H4, C2H2, H2, C0, CO2.
Because transformer oil has good heat radiation and insulating property, so oil-immersed power transformer is quoted widely in electric system.In normal operational process, transformer can be slowly aging under the impact of the various factorss such as mechanical stress and heat, electricity, and generate some inflammable gass.If transformer exists inner latency fault, the energy that trouble location discharges can accelerate the cracking of insulating material, impels the content of oil dissolved gas and gas production rate greatly to improve.By obtaining transformer oil sample, adopt the method for gas chromatography just can obtain the content of each component of oil dissolved gas, thereby the health status of transformer is made and being assessed or to existing abnormal transformer to carry out the analysis of failure condition.
And three-ratio method is a kind of method of carrying out transformer fault diagnosis according to the relative ratio of gas concentration.The substantial connection that the relative ratio of the gas componant content that it generates under the effect of fault energy according to TRANSFORMER INSULATING MATERIAL and trouble spot temperature exist is chosen gas diffusivity and is done ratio at two kinds of similar gases of dissolved in insulating oil degree from five kinds of characteristic gas components.According to above-mentioned method, choose altogether three groups of ratios, be respectively acetylene (C2H2)/ethene (C2H4), methane (CH4)/hydrogen (H2), ethene (C2H4)/ethane (C2H6), and the coding rule (not shown) of recommending according to guide rule is encoded to three kinds of ratios.Such as: when acetylene (C2H2)/ethene (C2H4) is less than 0.1, coding is set as 0; Acetylene (C2H2)/ethene (C2H4) is greater than or equal to 0.1 and when being less than 3, coding is set as 1; When acetylene (C2H2)/ethene (C2H4) is greater than or equal to 3, coding is set as 2.After obtaining the coding of three kinds of ratios, the fault type determination methods listed according to guide rule defined table just can judge fault type and possible failure cause easily.Because this method is simple and practical in engineering, therefore, adopt the transmitting transformer control system of three-ratio method to have great significance to oil-filled transformer fault diagnosis.
Certainly, also there is obvious weak point in three-ratio method, for example working as each component concentration of gas and gas production rate does not all exceed standard, running state of transformer is normal, three-ratio method diagnosis is invalid, only have and exceed standard or gas production rate exceeds standard or has enough when judging that transformer exists fault when gas content, three-ratio method diagnosis is just understood meaningful.Because gas in to oil carries out having error in sampling analysis test, bring certain influence so also can to the relative ratio of gas, may cause the inaccurate of diagnostic result.Therefore, when carrying out Chromatographic Analysis of Transformer oil test, test error must meet the requirement of guide rule defined, should avoid the various factors that may reduce precision to disturb as far as possible.
Therefore, be necessary the transmitting transformer control system of the employing three-ratio method of current employing to improve to improve the precision and stability of Transformer Fault Diagnosis, avoid occurring erroneous judgement operation and produce harmful effect.
Summary of the invention
In order to solve the problems of the technologies described above, the present invention proposes a kind of transmitting transformer control system of improving three-ratio method, this transmitting transformer control system can be avoided the measurement out of true that produces because of multiple factors impact or unstable to the full extent, can before carrying out three-ratio method monitoring, carry out early warning in advance, this early warning operating process can also divide rank early warning exactly, can before three-ratio method is monitored the type that is out of order accurately, send early warning notice.
For achieving the above object, technical conceive of the present invention is, for fear of measuring the maloperation producing, farthest guarantee the fault type accuracy of judgement degree of three-ratio method, except three-ratio method coding judgement system, introduced early warning system, the early warning system of transmitting transformer control system of the present invention has been taked elementary concentration early warning operation and early warning progressive operation two-stage deterministic process, and the technological means of employing is:
Scheme 1, a kind of transmitting transformer control system of improving three-ratio method, it comprises transmitting transformer ECU unit, memory unit, three detection modules, three-ratio method coding judge module and early warning and display unit, described three detection modules comprise concentration of component detection module, hydrocarbon content detection module, gas production rate detection module; Concentration of component detection module wherein, hydrocarbon content detection module, gas production rate detection module, three-ratio method coding judge module is connected with ECU unit, accept the steering order of ECU unit and feed back various signals to ECU unit, memory unit is connected with three-ratio method coding judge module with ECU unit respectively, and early warning and display unit are responsible for the early warning signal of ECU unit output to carry out outside Graphics Processing;
Wherein said concentration of component detection module can each each component of gas of cycle detection concentration, and each concentration value Di and the corresponding ultimate value Di0 of this gas composition are compared successively, once obtain concentration value of going beyond the limit of that this gas composition detects, carry out the counting operation of counter N, once counter, N equals or exceeds K, indicate that K group gas composition has exceeded ultimate value, starts early warning progressive operation;
Described hydrocarbon content detection module and gas production rate detection module detect respectively transformer total hydrocarbon content C and the absolute gas production rate V of total hydrocarbon, C0, C1 represent respectively transformer total hydrocarbon content first threshold and Second Threshold, V0, V1 represent respectively the absolute gas production rate first threshold of total hydrocarbon and Second Threshold, judge the early warning result of different brackets by the numerical relation between contrast transformer total hydrocarbon content C and the absolute gas production rate V of total hydrocarbon and above-mentioned threshold value;
Described transmitting transformer ECU unit carries out artificially based on above-mentioned early warning result or automatically determines whether carrying out the judgement of three-ratio method coding, when needs carry out the next concrete failure judgement type of three-ratio method computing, start three-ratio method coding judge module, extract required characteristic gas component numerical value and carry out corresponding fault type judgement.
Scheme 2, according to the transmitting transformer control system of the improvement three-ratio method of scheme 1, it is characterized in that, each component of each gas comprises H2, CH4, C2H4, C2H6, C2H2, total hydrocarbon.
Scheme 3, according to the transmitting transformer control system of the improvement three-ratio method of scheme 1, it is characterized in that, generally, K can be set to K≤6, is preferably 3.
Scheme 4, according to the transmitting transformer control system of the improvement three-ratio method of scheme 1, it is characterized in that, described early warning result is divided into normal condition, minor failure, medium fault and catastrophic failure, wherein C0 and V0 are chosen as empirical value, C1=2～3C0, V1=2～3V0.。
Invention, has adopted above-mentioned technological means after deliberation, has changed the single level judgment model of existing transmitting transformer control system, improves the accuracy of utilizing three-ratio method judgement transformer fault type; Optimized the early warning fail operation pattern of transformer control system, reduced the probability of the erroneous judgement maloperation causing due to a variety of causes, guaranteed the accuracy of output alert status, also the method judging by secondary detection has realized the further checking of fault pre-alarmings at different levels has been detected simultaneously, has strengthened application and the reliability of early warning system.
Accompanying drawing explanation
Fig. 1 is the transmitting transformer control system sketch that the present invention improves three-ratio method;
Fig. 2 is the workflow sketch that the present invention improves the transmitting transformer control system of three-ratio method;
Fig. 3 is transmitting transformer structural representation of the present invention.
Embodiment
As shown in Figure 1, the transmitting transformer control system of improvement three-ratio method of the present invention comprises transmitting transformer ECU unit, memory unit, three detection modules, three-ratio method coding judge module and early warning and display unit, described three detection modules comprise concentration of component detection module, hydrocarbon content detection module, gas production rate detection module.Concentration of component detection module wherein, hydrocarbon content detection module, gas production rate detection module, three-ratio method coding judge module is connected with ECU unit, accept the steering order of ECU unit and feed back various signals to ECU unit, memory unit is connected with three-ratio method coding judge module with ECU unit respectively, and early warning and display unit are responsible for the early warning signal of ECU unit output to carry out outside Graphics Processing.
Described concentration of component detection module, hydrocarbon content detection module, gas production rate detection module was responsible for before starting three-ratio method coding judge module start detection, detect, judge and defeated out of order early warning result, this early warning result can be divided into normal condition, minor failure, medium fault and catastrophic failure, generally, normal condition and minor failure do not need to carry out urgent processing, only need continue to observe, and just judge further concrete fault type while there is medium fault and catastrophic failure.That is to say, three-ratio method coding judge module does not generally carry out work, only after aforesaid early warning result occurs, just based on early warning result by artificially or automatically trigger startup, the application of three-ratio method has been simplified in such setting greatly, enrich the function of transmitting transformer control system simultaneously, in the time need to carrying out the diagnosis of fault type, just diagnosed, while not needing, only played general fault pre-alarming.In order to improve the reliability of fault pre-alarming, the method judging by secondary detection has realized the further checking of fault pre-alarmings at different levels has been detected, and has strengthened application and the reliability of early warning system simultaneously.To improving the transmitting transformer control system of three-ratio method, describe in detail below:
Transformer can be subject to the impact of the various factorss such as mechanical stress, temperature, highfield and moisture, oxygen in operational process, can under the effect of these factors, there are the various chemical reactions such as carbonization, cracking and oxidation in insulating oil, generate hydrogen, low molecular hydrocarbon compounds, greasy filth, some oxide and hydrocarbon polymer (X wax), the deteriorated and catabiosis of Here it is transformer insulation oil.Under normal circumstances, insulating oil only generates seldom some gases of amount, and the content of these gases also can remain in GB setting conventionally.Once inner latency fault occurs transformer, the energy that trouble spot discharges can accelerate insulating oil and decompose aerogenesis, may cause gas concentration to surpass critical value.And the source of Gases Dissolved in Transformer Oil is very complicated, transformer also can generate a small amount of gas under normal running (operation) conditions under the effect of electricity, thermal stress, when there is inner latency fault in transformer, the energy that trouble spot discharges can accelerate the decomposition aerogenesis of insulating material, may cause the gas concentration value of overstepping the extreme limit, therefore can by the concentration of gas, roughly judge that whether transformer state is normal.It is as shown in the table for regulation gas dissolved in oil of power trans-formers ultimate value.
Table Gas in Oil of Transformer concentration of component ultimate value (uL/L)
Aforesaid prealarming process can be divided into elementary concentration early warning operation and early warning progressive operation two parts:
In elementary concentration early warning operation, described concentration of component detection module can each component of each gas of cycle detection (H2, CH4, C2H4, C2H6, C2H2, total hydrocarbon) concentration, and by each concentration value Di and the corresponding ultimate value Di0 (D10 of this gas composition, D20, D30, D40, D50, D60) compare successively, once obtain concentration value of going beyond the limit of that this gas composition detects, carry out the counting operation of counter N, once counter N equals or exceeds K (generally, N, K is integer and can arranges, K≤6, be preferably 3) time, indicate that K group gas composition has exceeded ultimate value, start early warning progressive operation, if counter does not reach K value after having measured six groups of concentration, counter can send in standby mode or zero clearing wait detection next time instruction.Thus, by polycomponent repeated detection, judge, guaranteed the accuracy of output early warning result, avoided because a certain gas composition detects the mistake early warning that error causes.
Through long-term operating experience, find, transformer fault normally starts with the low-yield fault of latency, the fault Free Development if leave, finally may cause the generation of transformer major accident, because gas concentration can only be from a current running status of side reflection transformer, and gas production rate also reflects the out of order order of severity to a certain extent, in early warning progressive operation process of the present invention, in conjunction with gas concentration and gas production rate, transformer state is carried out objectively detecting assessment comprehensively just.
Described hydrocarbon content detection module and gas production rate detection module detect respectively transformer total hydrocarbon content C and the absolute gas production rate V of total hydrocarbon, C0, C1 represents respectively transformer total hydrocarbon content first threshold and Second Threshold, V0, V1 represents respectively the absolute gas production rate first threshold of total hydrocarbon and Second Threshold, by contrast transformer total hydrocarbon content C and the absolute gas production rate V of total hydrocarbon, judge different advanced warning grades from the numerical relation between above-mentioned threshold value, these advanced warning grades are divided into normal condition, minor failure, medium fault and catastrophic failure, in research process, find simultaneously, the early warning of faults at different levels also occurs that than being easier to the erroneous judgement detecting is broken and the reduction of accuracy, therefore, the method that early warning system of the present invention judges by secondary detection has realized the raising to fault pre-alarming accuracys at different levels.
Particularly, demonstrate as shown in Figure 2 the transmitting transformer control system workflow sketch of improvement three-ratio method of the present invention,
First start early warning operation steps, i value is set, K value and counter N zero clearing, i=1 wherein, i, K is integer, K≤6, be preferably 3, in concentration of component detection module, detect each component of each gas (H2, CH4, C2H4, C2H6, C2H2, total hydrocarbon) concentration obtains each concentration value Di (D1, D2, D3, D4, D5, D6), whether the concentration value that judges successively each gas composition has exceeded ultimate value Di0 (D10 separately, D20, D30, D40, D50, D60), once corresponding gas composition value of going beyond the limit of, carry out 1 operation that adds of counter N, when counter N is more than or equal to K, when the gas composition quantity of the value of going beyond the limit of surpasses K, the elementary concentration early warning operation that shows early warning system completes, start and enter early warning progressive operation,
Described hydrocarbon content detection module and gas production rate detection module detect respectively transformer total hydrocarbon content C and the absolute gas production rate V of total hydrocarbon, by total hydrocarbon content C and definitely gas production rate V respectively with total hydrocarbon content first threshold C0 and Second Threshold C1, total hydrocarbon absolute gas production rate first threshold V0 and Second Threshold V1 compare, judge respectively total hydrocarbon content C and the absolute residing above-mentioned threshold interval scope of gas production rate V, judgement draws corresponding fault level early warning.
Wherein it should be noted that, C0, C1, V0, the concrete selection of V1 can be obtained by empirical value, also C0 and V0 can be chosen as to empirical value, C1=2～3C0, V1=2～3V0.Above-mentioned detected components type can be selected according to situation, can be three kinds, four kinds or five kinds etc.
The deterministic process of concrete early warning progressive operation is as follows,
1). when meeting C < C0 and V < V0, indication transformer is normal, and advanced warning grade is normal condition, does not carry out three-ratio method computing judgement;
2). when meeting C0 < C < C1 and V < V0, may there is latency fault in indication transformer, now need to carry out secondary detection total hydrocarbon content C ' and definitely gas production rate V ' further judge, and need to postpone the t time before secondary detection, postponing certain t time, to carry out secondary detection be in order to increase the time span of detection again, while guaranteeing to detect, can not be subject to the impact of other factors to improve precision, if still meet C0 < C ' < C1 and V0 < V ' < V1, now show to exist the fault of slower development, affect comparatively slight, advanced warning grade is minor failure, selectively do not carry out three-ratio method computing judgement,
3). when meeting C0 < C < C1 and V0 < V < V1, likely there is obvious fault in indication transformer, now need to carry out secondary detection total hydrocarbon content C ' and definitely gas production rate V ' further judge, and need to postpone the t time before secondary detection, if still meet C0 < C ' < C1 and V0 < V ' < V1, now show to exist medium fault, advanced warning grade is medium fault, now need to carry out artificially or automatically judge whether to carry out three-ratio method computing to carry out concrete failure judgement type,
4). when meeting C1 < C and V1 < V, likely there is obvious fault in indication transformer, now need to carry out secondary detection total hydrocarbon content C ' and definitely gas production rate V ' further judge, and need to postpone the t time before secondary detection, if still meet C1 < C ' and V1 < V ', now show to exist the catastrophic failure worsening comparatively rapidly, advanced warning grade is catastrophic failure, now need to carry out artificially or automatically judge whether to carry out three-ratio method computing to carry out concrete failure judgement type.
Finally, after above-mentioned prealarming process completes, based on early warning result, carry out artificially or automatically determine whether carrying out the judgement of three-ratio method coding, when being medium fault or catastrophic failure, early warning result just carries out above-mentioned judgement, when not needing to carry out three-ratio method operation, only draw early warning result, return and finish to continue to carry out cycle detection; When needs carry out the next concrete failure judgement type of three-ratio method computing, start three-ratio method coding judge module, extract five required characteristic gas component numerical value and carry out corresponding fault type judgement.Do not repeat the specific implementation process of three-ratio method herein.
As mentioned above, the transmitting transformer control system of improvement three-ratio method of the present invention has realized the improvement to three-ratio method, by comprising the pre-alarm detection module of elementary concentration early warning operation and early warning progressive operation, optimized the early warning fail operation pattern of transformer control system, reduced the probability of the erroneous judgement maloperation causing due to a variety of causes, guaranteed the accuracy of output alert status, also the method judging by secondary detection has realized the further checking of fault pre-alarmings at different levels has been detected simultaneously, has strengthened application and the reliability of early warning.
In addition, the present invention gives the oil immersed type transmitting transformer that above-mentioned control device is carried out to concrete application, this oil immersed type transmitting transformer structural representation as shown in Figure 3, this transformer comprises the transformer shell 1 that covers whole transformer, be connected to the insulation fuel tank 2 on transformer shell 1, transformer liner 3, and major function part winding coil 4 and the iron core 5 of transmitting transformer, pick-up unit 6 and thermo detector 7 are positioned at transformer shell 1 top edges place, for carrying out the detection of related control data, be positioned at insulating oil 10 and the air layer 11 of insulation fuel tank 2.
Although illustrated and described embodiments of the invention, for the ordinary skill in the art, be appreciated that without departing from the principles and spirit of the present invention and can carry out multiple variation, modification, replacement and modification to these embodiment, simultaneously, the cited formula of the present invention, symbol (order mark i for example, threshold k, counter N etc.) etc. implication is the habitual implication in this area, and scope of the present invention is by claims and be equal to and limit.The convenience that the accompanying drawing simultaneously providing in instructions is only understood as instructions, does not carry out any restriction to claim, and process flow diagram is only also that the simplification of making as the convenience of understanding is processed, and does not cause and discloses inadequate defect etc.
Claims (4)
1. a transmitting transformer control system of improving three-ratio method, it comprises transmitting transformer ECU unit, memory unit, three detection modules, three-ratio method coding judge module and early warning and display unit, described three detection modules comprise concentration of component detection module, hydrocarbon content detection module, gas production rate detection module; Concentration of component detection module wherein, hydrocarbon content detection module, gas production rate detection module, three-ratio method coding judge module is connected with ECU unit, accept the steering order of ECU unit and feed back various signals to ECU unit, memory unit is connected with three-ratio method coding judge module with ECU unit respectively, and early warning and display unit are responsible for the early warning signal of ECU unit output to carry out outside Graphics Processing;
Wherein said concentration of component detection module can each each component of gas of cycle detection concentration, and each concentration value Di and the corresponding ultimate value Di0 of this gas composition are compared successively, once obtain concentration value of going beyond the limit of that this gas composition detects, carry out the counting operation of counter N, once counter, N equals or exceeds K, indicate that K group gas composition has exceeded ultimate value, starts early warning progressive operation;
Described hydrocarbon content detection module and gas production rate detection module detect respectively transformer total hydrocarbon content C and the absolute gas production rate V of total hydrocarbon, C0, C1 represent respectively transformer total hydrocarbon content first threshold and Second Threshold, V0, V1 represent respectively the absolute gas production rate first threshold of total hydrocarbon and Second Threshold, draw the early warning result of different brackets by the numerical relation judgement between contrast transformer total hydrocarbon content C and the absolute gas production rate V of total hydrocarbon and above-mentioned threshold value;
Described transmitting transformer ECU unit carries out artificially based on above-mentioned early warning result or automatically determines whether carrying out the judgement of three-ratio method coding, when needs carry out the next concrete failure judgement type of three-ratio method computing, start three-ratio method coding judge module, extract required characteristic gas component numerical value and carry out corresponding fault type judgement.
2. according to the transmitting transformer control system of the improvement three-ratio method of claim 1, it is characterized in that, each component of each gas comprises H2, CH4, C2H4, C2H6, C2H2, total hydrocarbon.
3. according to the transmitting transformer control system of the improvement three-ratio method of claim 1, it is characterized in that, generally, K can be set to K≤6, is preferably 3.
4. according to the transmitting transformer control system of the improvement three-ratio method of claim 1, it is characterized in that, described early warning result is divided into normal condition, minor failure, medium fault and catastrophic failure, wherein C0 and V0 are chosen as empirical value, C1=2～3C0, V1=2～3V0.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610070840.4A CN105527555B (en) | 2014-07-16 | 2014-07-16 | The transmitting transformer control system of other early warning can be classified |
| CN201610069425.7A CN105606969B (en) | 2014-07-16 | 2014-07-16 | A kind of transmitting transformer control system that can be classified other early warning |
| CN201610069329.2A CN105527554A (en) | 2014-07-16 | 2014-07-16 | Power transmission transformer control system capable of gradable early warning |
| CN201410341163.6A CN104090079B (en) | 2014-07-16 | A kind of transmitting transformer control system improving three-ratio method | |
| CN201610070838.7A CN105548796A (en) | 2014-07-16 | 2014-07-16 | Power transmission transformer control system |
| CN201610071174.6A CN105717410B (en) | 2014-07-16 | 2014-07-16 | Transmitting transformer control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410341163.6A CN104090079B (en) | 2014-07-16 | A kind of transmitting transformer control system improving three-ratio method |
Related Child Applications (5)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610069329.2A Division CN105527554A (en) | 2014-07-16 | 2014-07-16 | Power transmission transformer control system capable of gradable early warning |
| CN201610070840.4A Division CN105527555B (en) | 2014-07-16 | 2014-07-16 | The transmitting transformer control system of other early warning can be classified |
| CN201610070838.7A Division CN105548796A (en) | 2014-07-16 | 2014-07-16 | Power transmission transformer control system |
| CN201610071174.6A Division CN105717410B (en) | 2014-07-16 | 2014-07-16 | Transmitting transformer control system |
| CN201610069425.7A Division CN105606969B (en) | 2014-07-16 | 2014-07-16 | A kind of transmitting transformer control system that can be classified other early warning |
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| CN104090079A true CN104090079A (en) | 2014-10-08 |
| CN104090079B CN104090079B (en) | 2016-11-30 |
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| CN107894969A (en) * | 2017-09-13 | 2018-04-10 | 中国石油大学(华东) | A kind of latent transformer fault early warning method based on trend analysis |
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| CN104330684A (en) * | 2014-10-31 | 2015-02-04 | 国家电网公司 | Multi-parameter power transformer core inside local short-circuit fault monitoring method |
| CN107894969A (en) * | 2017-09-13 | 2018-04-10 | 中国石油大学(华东) | A kind of latent transformer fault early warning method based on trend analysis |
| CN107894969B (en) * | 2017-09-13 | 2020-11-24 | 山东大学 | Transformer latent fault early warning method based on trend analysis |
| CN108414684A (en) * | 2018-01-31 | 2018-08-17 | 贵州乌江水电开发有限责任公司东风发电厂 | A kind of for transformer status assessment and method for diagnosing faults |
| CN111856166A (en) * | 2019-04-19 | 2020-10-30 | 宁波奥克斯高科技有限公司 | Detection method of box-type transformer and transformer |
| CN111289728A (en) * | 2020-03-26 | 2020-06-16 | 云南电网有限责任公司电力科学研究院 | Device and method for monitoring dissolved gas in insulating oil |
| CN112731018A (en) * | 2020-12-21 | 2021-04-30 | 广州浩能机电安装工程有限公司 | Transformer monitoring method and system, computer equipment and storage medium thereof |
| CN114252724A (en) * | 2022-03-02 | 2022-03-29 | 山东和兑智能科技有限公司 | Intelligent detection method and detection system for transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105527554A (en) | 2016-04-27 |
| CN105527555B (en) | 2018-06-19 |
| CN105606969A (en) | 2016-05-25 |
| CN105527555A (en) | 2016-04-27 |
| CN105548796A (en) | 2016-05-04 |
| CN105606969B (en) | 2018-06-19 |
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