CN103235242A - Inflatable direct current sleeve state evaluation system and state evaluation method - Google Patents
Inflatable direct current sleeve state evaluation system and state evaluation method Download PDFInfo
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- CN103235242A CN103235242A CN2013101538318A CN201310153831A CN103235242A CN 103235242 A CN103235242 A CN 103235242A CN 2013101538318 A CN2013101538318 A CN 2013101538318A CN 201310153831 A CN201310153831 A CN 201310153831A CN 103235242 A CN103235242 A CN 103235242A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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Abstract
The invention discloses an inflatable direct current sleeve state evaluation system comprises a preventive test instrument, an on-line monitoring device, a mobile device, a grid operation monitoring device, a distributed device, a state evaluation background and a communication device, and simultaneously discloses a state evaluation method based on the system. The method comprises the following steps: firstly, extracting the characteristic quantity of inflatable direct current sleeve risk evaluation, secondly, calculating and obtaining the weight of the characteristic quantity of the inflatable direct current sleeve state evaluation system, thirdly, correcting the state quantity according to equipment familial defect data, and fourthly, establishing the state evaluation of the inflatable direct current sleeve state evaluation method. The method is based on the state evaluation of preventive test data, on-line monitoring data, inspection data, grid operation monitoring data and familial defect data, breaks through the situation that currently state evaluation is performed aiming at preventive test data, on-line monitoring data or manual inspection data singly, and improves the operation reliability of direct current systems.
Description
Technical field
The present invention relates to straight-flow system service technique field, be specifically related to a kind of inflatable dc bushing status assessing system and adopt this status assessing system to carry out the method for state estimation.
Background technology
Because present domestic inflatable dc bushing is as an important main equipment at direct-current transmission converter station, realized being connected of indoor converter valve equipment and outdoor dc fields equipment, the running status assessment of itself has great significance to the safe and reliable operation that ensures straight-flow system.Analyze the method for inflatable dc bushing state estimation at present separately based on preventive trial, on-line monitoring, historical summary and tour data.Preventive trial is mainly measured the sleeve pipe guide rod to insulation resistance, electric capacity and the dielectric loss value of end screen, end screen insulation resistance, electric capacity and dielectric loss value over the ground, SF
6Density, pressure and micro-water content; On-line monitoring is mainly carried out the electric capacity of bottom shielding of bushing and dielectric loss, SF
6Density, pressure and micro-water content; Historical summary is mainly based on historical datas such as device manufacturing process level, familial defective, fault case, defect analysiss; Making an inspection tour data owner will be based on inflatable dc bushing SF
6Density, pressure.Yet preventive trial, on-line monitoring and historical summary at present carry out direct current health status assessment through walls as appraisement system independently, for considering that the state estimation that preventive trial, on-line monitoring, historical summary and tour data and operation of power networks monitoring data carry out the inflatable dc bushing do not carry out at present as yet.Therefore set up systematic inflatable dc bushing status assessing system, to improving the reliable rate of straight-flow system and ensureing that continual and steady energy resource supply has great significance, and has promoted the sustained, stable growth of national economy.
The present invention is under national 863 Program project fund (2012AA050209) is subsidized, and has proposed a kind of inflatable dc bushing status assessing system and state evaluating method.
Summary of the invention
The objective of the invention is to overcome existing one-sidedness of carrying out the existence of inflatable dc bushing state estimation respectively based on preventive trial, on-line monitoring, historical summary, tour data and operation of power networks monitoring data, improve the reliable rate of straight-flow system simultaneously, a kind of inflatable dc bushing status assessing system is provided and adopts this status assessing system to carry out the method for state estimation.
For realizing above purpose, the present invention has taked following technical scheme:
A kind of inflatable dc bushing status assessing system, it comprises: the preventive trial instrument that is used for the inflatable dc bushing is carried out preventive trial; Be used for the inflatable dc bushing is carried out the on-Line Monitor Device of on-line monitoring; For the mobile device that the inflatable dc bushing is maked an inspection tour; Be used for the inflatable dc bushing is carried out the operation of power networks monitoring arrangement that operation of power networks monitors; Distributed devices for the familial defective data of uploading the inflatable dc bushing; For the state estimation backstage that the state of inflatable dc bushing is analyzed; And the familial defective data uploaded of the tour data of the preventive trial data that are used for described preventive trial instrument is obtained, online monitoring data that on-Line Monitor Device is obtained, mobile device record, operation of power networks monitoring data that the operation of power networks monitoring arrangement obtains and distributed devices all is sent to the communication device on state estimation backstage.
Described communication device comprises first radio receiving transmitting module that links to each other with the output terminal of preventive trial instrument, second radio receiving transmitting module that links to each other with the output terminal of on-Line Monitor Device, the 3rd radio receiving transmitting module that links to each other with the output terminal of mobile device, the 4th radio receiving transmitting module that links to each other with the output terminal of operation of power networks monitoring arrangement, the 5th radio receiving transmitting module that links to each other with the output terminal of distributed devices, and the 6th radio receiving transmitting module that links to each other with the input end on state estimation backstage, described first radio receiving transmitting module, second radio receiving transmitting module, the 3rd radio receiving transmitting module, the 4th radio receiving transmitting module, the 5th radio receiving transmitting module all carries out data transmission with the 6th radio receiving transmitting module by wireless network.
Described preventive trial instrument comprises dielectric loss tester, gas composition analyser, little water gaging instrument, temperature measuring set, gas-pressure survey meter, direct current resistance measurer, the filthy measuring instrument that is connected between inflatable dc bushing and first radio receiving transmitting module.
Described on-Line Monitor Device comprises environment temperature on-line monitoring instrument, ambient humidity on-line monitoring instrument, surface filth on-line monitoring instrument, last electric capacity of shielding and dielectric loss on-line monitoring instrument, the SF that is connected between inflatable dc bushing and second radio receiving transmitting module
6Density on-line monitoring instrument, pressure on-line monitoring instrument, micro-water content on-line monitoring instrument and gas composition on-line monitoring instrument.
Described operation of power networks monitoring arrangement comprises DC voltage transformer, DC current transformer and signal processing unit, the input end of described DC voltage transformer, DC current transformer all links to each other with the inflatable dc bushing, and its output terminal all is connected to the 4th radio receiving transmitting module by signal processing unit.
Adopt inflatable dc bushing status assessing system to carry out the method for state estimation, it may further comprise the steps:
(1) according to preventive trial data, online monitoring data, tour data, operation of power networks monitoring data, extract the characteristic component of inflatable dc bushing risk assessment, described characteristic component value is formed vectorial A, its size is 1 * M, and M is the characteristic component sum of inflatable dc bushing risk assessment;
(2) form based on the function of inflatable dc bushing, form the functional module C of inflatable dc bushing
iWith the relational matrix E of characteristic component, its computing formula is formula (1):
Functional module C in the formula
iMiddle i gets [1,6], represents sleeving core submodule, capacitor core module, last panel module, grading ring module, silastic material module, SF respectively
6Gas module, E
IjBe the component of relational matrix E, D
jBe and functional module C
iRelevant characteristic quantity, wherein D
jComputing formula be formula (2):
A wherein
jJ the characteristic component of the vectorial A that forms for the characteristic component of status assessing system, a
jAnd b
jBe respectively component A
jHigher limit and lower limit, j, k are positive integer and 1≤j≤M, k≤M;
(3) according to the familial defective data, conclude corresponding quantity of state data, will have the component A of familial defective
jMultiply by 0.8 respectively and revise, obtain revising vectorial G, its size is 1 * M;
(4) according to the vectorial G of described correction and relational matrix E, set up at sleeving core submodule, capacitor core module, last panel module, grading ring module, silastic material module, SF
6The state evaluation vector F of gas module, its computing formula is formula (3):
F=E×G （3）
Wherein, the status level component of i the module of state evaluation vector F is designated as F
i
Utilize formula (3) to calculate the sleeving core subelement of inflatable dc bushing, capacitor core unit, screen unit, end, grading ring unit, silastic material unit, SF
6The state evaluation value of gas cell is again with each status level component F
iMultiply by respectively 0.17 and summation obtain the status level value of whole inflatable dc bushing.
Its state is divided into normally (less than 0.3), notes (greater than 0.3 less than 0.55), unusual (greater than 0.55 less than 0.85), serious (greater than 0.85 less than 1) four kinds of states according to the status level value of whole inflatable dc bushing.
Described M=26, wherein: A
1Be the insulation resistance of inflatable dc bushing guide rod to end screen preventive trial; A
2Be the electric capacity of inflatable dc bushing guide rod to end screen preventive trial; A
3Be the dielectric loss amount of inflatable dc bushing guide rod to end screen preventive trial; A
4For shielding the insulation resistance of preventive trial over the ground in inflatable dc bushing end; A
5For shielding the electric capacity of preventive trial over the ground in inflatable dc bushing end; A
6For shielding the dielectric loss amount of preventive trial over the ground in inflatable dc bushing end; A
7Direct current resistance for inflatable dc bushing guide rod preventive trial; A
8Pressure for inflatable dc bushing preventive trial; A
9Gas composition for inflatable dc bushing preventive trial; A
10Filth value for inflatable dc bushing preventive trial; A
11Environment temperature for inflatable dc bushing on-line monitoring; A
12Ambient humidity for inflatable dc bushing on-line monitoring; A
13Filth value for inflatable dc bushing on-line monitoring; A
14Electric capacity and dielectric loss for the end of inflatable dc bushing on-line monitoring screen; A
15The SF that tests for inflatable dc bushing on-line monitoring
6The density of gas; A
16Pressure for inflatable dc bushing on-line monitoring; A
17Little water for inflatable dc bushing on-line monitoring; A
18Gas composition for inflatable dc bushing on-line monitoring; A
19Pressure for the tour of inflatable dc bushing; A
20Little water for the tour of inflatable dc bushing; A
21Temperature for the tour of inflatable dc bushing; A
22DC voltage amplitude for inflatable dc bushing operation of power networks supervision; A
23DC current amplitude for inflatable dc bushing operation of power networks supervision; A
24Be the DC voltage amplitude under the misoperation of inflatable dc bushing operation of power networks monitoring arrangement; A
25Be the DC current amplitude under the misoperation of inflatable dc bushing operation of power networks monitoring arrangement; A
26Be the dominant frequency under the misoperation of inflatable dc bushing operation of power networks monitoring arrangement.
Each characteristic component A
jCorresponding higher limit a
jWith lower limit b
jAs follows: b
1=10G Ω; a
2=5%, b
2=-5%; a
3=0.8; b
4=1G Ω; a
5=5%, b
5=-5%; a
6=2%, b
6=-2%; a
7=1%, b
7=-1%; b
8=8Mpa; a
9=100 μ L/L; a
10=0.3mg/cm
2a
11=80 ℃; a
12=85%; a
13=0.3mg/cm
2a
14=2%, b
14=-2%; b
15=8kg/m
3b
16=8MPa; a
17=500 μ L/L; a
18=100 μ L/L; b
19=8MPa; a
20=250; a
21=30 ℃; a
22=801KV; a
23=30000A; a
24=1200KV; a
25=25000A; a
26=20KHZ.
Described D
jRepresentative and functional module C
iRelevant characteristic quantity comprises: functional module C
1Relevant characteristic quantity is respectively [D
7, D
10, D
11, D
21, D
22, D
23, D
24, D
25, D
26]; Functional module C
2Relevant characteristic quantity is respectively [D
1, D
10, D
11, D
2, D
3, D
8, D
9, D
14]; Functional module C
3Relevant characteristic quantity is respectively [D
4, D
10, D
11, D
5, D
6, D
14]; Functional module C
4Relevant characteristic quantity is respectively [D
7, D
10, D
13, D
22, D
23, D
24, D
25, D
26]; Functional module C
5Relevant characteristic quantity is respectively [D
1, D
2, D
3, D
10, D
11, D
13]; Functional module C
6Relevant characteristic quantity is respectively [D
8, D
9, D
11, D
12, D
15, D
16, D
17, D
18, D
18, D
19, D
20].
The present invention compared with prior art, has following advantage: the present invention is based on the state estimation that preventive trial data, online monitoring data, tour data, operation of power networks monitoring data, familial defective data are carried out the inflatable dc bushing of system, break through the at present single state estimation that carries out at preventive trial or online monitoring data or manual patrol data simultaneously, improve the reliable rate of straight-flow system.
Description of drawings
Fig. 1 is the structured flowchart of inflatable dc bushing status assessing system of the present invention;
Fig. 2 is the data transmission synoptic diagram of preventive trial instrument of the present invention;
Fig. 3 is the data transmission synoptic diagram of on-Line Monitor Device of the present invention;
Fig. 4 is the data transmission synoptic diagram of mobile device of the present invention;
Fig. 5 is the data transmission synoptic diagram of operation of power networks monitoring arrangement of the present invention;
Fig. 6 is the data transmission synoptic diagram of distributed devices of the present invention;
Fig. 7 is the schematic flow sheet of inflatable dc bushing state evaluating method of the present invention.
Wherein: 1, inflatable dc bushing; 2, preventive trial instrument; 21, dielectric loss tester; 22, gas composition analyser; 23, little water gaging instrument; 24, temperature measuring set; 25, gas-pressure survey meter; 26, direct current resistance measurer; 27, filthy measuring instrument; 3, on-Line Monitor Device; 31, environment temperature on-line monitoring instrument; 32, ambient humidity on-line monitoring instrument; 33, surface filth on-line monitoring instrument; 34, electric capacity and the dielectric loss on-line monitoring instrument of end screen; 35, SF
6Density on-line monitoring instrument; 36, pressure on-line monitoring instrument; 37, micro-water content on-line monitoring instrument; 38, gas composition on-line monitoring instrument; 4, mobile device; 5, operation of power networks monitoring arrangement; 51, DC voltage transformer; 52, DC current transformer; 53, signal processing unit; 6, distributed devices; 7, communication device; 71, first radio receiving transmitting module; 72, second radio receiving transmitting module; 73, the 3rd radio receiving transmitting module; 74, the 4th radio receiving transmitting module; 75, the 5th radio receiving transmitting module; 76, the 6th radio receiving transmitting module; 8, state estimation backstage.
Embodiment
Below in conjunction with the drawings and specific embodiments content of the present invention is described in further details.
Embodiment:
See also shown in Figure 1ly, inflatable dc bushing status assessing system of the present invention includes inflatable dc bushing 1, preventive trial instrument 2, on-Line Monitor Device 3, mobile device 4, operation of power networks monitoring arrangement 5, distributed devices 6, communication device 7 and state estimation backstage 8 is formed.Preventive trial instrument 2 obtains the preventive trial data of inflatable dc bushing 1, on-Line Monitor Device 3 is used for obtaining the online monitoring data of inflatable dc bushing, mobile device 4 is used for the data of record manual patrol, operation of power networks monitoring arrangement 5 is used for obtaining the operation of power networks monitoring data of inflatable dc bushing 1, distributed devices 6 is used for uploading dc bushing familial defective data, communication device 7 is responsible for the preventive trial data, online monitoring data, the data of manual patrol, the operation of power networks monitoring data, the familial defective data is transferred to state estimation backstage 8, the state estimation of inflatable dc bushing 1 is realized according to above-mentioned data in state estimation backstage 8, for the safe and reliable operation of straight-flow system provides foundation.
See also shown in Figure 2, preventive trial instrument 2 comprises dielectric loss tester 21, gas composition analyser 22, little water gaging instrument 23, temperature measuring set 24, gas-pressure survey meter 25, direct current resistance measurer 26, filthy measuring instrument 27, their input end all is connected with inflatable dc bushing 1, output terminal all is connected with first radio receiving transmitting module 71, also is connected with the 6th radio receiving transmitting module 76 and state estimation backstage 8 in turn at the opposite side of first radio receiving transmitting module 71.Wherein, be wireless connections between preventive trial instrument 2 and first radio receiving transmitting module 71; State estimation backstage 8 is connected with the 6th radio receiving transmitting module 76 by serial ports; First radio receiving transmitting module 71 is connected to the 6th radio receiving transmitting module 76 through wireless network, realizes that the preventive trial data transmission is to state estimation backstage 8.
See also shown in Figure 3, transmission structure with preventive trial instrument 2 is similar, and on-Line Monitor Device 3 comprises environment temperature on-line monitoring instrument 31, ambient humidity on-line monitoring instrument 32, surface filth on-line monitoring instrument 33, last electric capacity of shielding and dielectric loss on-line monitoring instrument 34, SF
6Density on-line monitoring instrument 35, pressure on-line monitoring instrument 36, micro-water content on-line monitoring instrument 37 and gas composition on-line monitoring instrument 38, their input end all is connected with inflatable dc bushing 1, output terminal all is connected with second radio receiving transmitting module 72.Opposite side at second radio receiving transmitting module 72 also is connected with the 6th radio receiving transmitting module 76 and state estimation backstage 8 in turn.
See also shown in Figure 4, mobile device 4 is a kind of mobile electronic devices with the 3rd radio receiving transmitting module 73, the temperature and pressure data that its data read by scene tour personnel also deposit data in this mobile electronic device, and sent by the 3rd radio receiving transmitting module 73, also be connected with the 6th radio receiving transmitting module 76 and state estimation backstage 8 in turn at the opposite side of the 3rd radio receiving transmitting module 73.
See also shown in Figure 5, operation of power networks monitoring arrangement 5 comprises DC voltage transformer 51, DC current transformer 52 and signal processing unit 53, wherein the input end of DC voltage transformer 51, DC current transformer 52 all links to each other with inflatable dc bushing 1, its output terminal all is connected to the 4th radio receiving transmitting module 74 by signal processing unit 53, also is connected with the 6th radio receiving transmitting module 76 and state estimation backstage 8 in turn at the opposite side of the 4th radio receiving transmitting module 74.
See also shown in Figure 6, distributed devices 6 comprises by link familial defective datas such as the manufacturing of artificial summary inflatable dc bushing, test, transportations, conclude corresponding quantity of state data, and sent by the 5th radio receiving transmitting module 75 by distributed devices 6, also be connected with the 6th radio receiving transmitting module 76 and state estimation backstage 8 in turn at the opposite side of the 5th radio receiving transmitting module 75.
In conjunction with Fig. 2-6 as can be known, communication device 7 comprises first radio receiving transmitting module 71 that links to each other with the output terminal of preventive trial instrument 2, second radio receiving transmitting module 72 that links to each other with the output terminal of on-Line Monitor Device 3, the 3rd radio receiving transmitting module 73 that links to each other with the output terminal of mobile device 4 and be integrated in one with this mobile device 4, the 4th radio receiving transmitting module 74 that links to each other with the output terminal of operation of power networks monitoring arrangement 5, the 5th radio receiving transmitting module 75 that links to each other with the output terminal of distributed devices 6, and the 6th radio receiving transmitting module 76 that links to each other with the input end on state estimation backstage 8, wherein, first radio receiving transmitting module 71, second radio receiving transmitting module 72, the 3rd radio receiving transmitting module 73, the 4th radio receiving transmitting module 74, the 5th radio receiving transmitting module 75 all carries out data transmission with the 6th radio receiving transmitting module 76 by wireless network.
In the present embodiment, inflatable dc bushing 1 adopts HSP HOCHSPANNUNGSGERATE KOLN/GERMAN inflatable dc bushing, first radio receiving transmitting module 71, second radio receiving transmitting module 72, the 3rd radio receiving transmitting module 73, the 4th radio receiving transmitting module 74, the 5th radio receiving transmitting module 75 and the 6th radio receiving transmitting module 76 all adopt the R-8552/8554GPRS DTU of GEMOTECH, dielectric loss tester 21 adopts the YHJS-IV dielectric loss instrument of the suitable great electric Science and Technology Ltd. in Shanghai, gas composition analyser 22 adopts the GC-7960 type gas chromatograph of Tengzhou City Alan Analytical Instrument Co., Ltd, and little water gaging instrument 23 adopts the RTWS-242SF of China day electric power company
6Little water gaging instrument, temperature measuring set 24 adopts the DSC-DTSnK-XB of Dien instrument, gas-pressure survey meter 25 adopts the HQ-SY-C precision digital tensimeter of red flag instrument, direct current resistance measurer 26 adopts the PC57 direct current resistance measurer of Shanghai Tai Ou Electronics Co., Ltd., filthy measuring instrument 27 adopts the NDYMD digital direct-reading type intelligence salt density test instrument of electric magnificent source, south, Wuhan Electric Applicance Co., Ltd, the PowerEdge R410 of Dell is adopted on state estimation backstage 8, environment temperature on-line monitoring instrument 31 adopts the DSC-DTSnK-XB of Beijing Dien Kang Shuo development in science and technology company limited, ambient humidity on-line monitoring instrument 32 adopts ETH-P16 type environmental test equipment temperature and humidity inspection instrument, surface filth on-line monitoring instrument 33 adopts the NDYMD digital direct-reading type intelligence salt density test instrument of electric magnificent source, south, Wuhan Electric Applicance Co., Ltd, the electric capacity of end screen and dielectric loss on-line monitoring instrument 34 adopt the ZF-800-3 type capacitive apparatus on-line monitoring instrument that divides in the Henan, SF
6The Y-100-type of the extraordinary instrucment and meter plant in Yichang that adopts of density on-line monitoring instrument 35, pressure on-line monitoring instrument 36 adopts the HQ-SY-C precision digital tensimeter of red flag instrument, micro-water content on-line monitoring instrument 37 adopts the RTWS-242SF of China day electric power companies
6Little water gaging instrument, gas composition on-line monitoring instrument 38 adopts the GC-7960 type gas chromatograph of Tengzhou City Alan Analytical Instrument Co., Ltd, mobile device 4 adopts the G23One X type of HTC company, DC voltage transformer 51 adopts the HVR-GC of German SCHNIEWINDT, DC current transformer 52 adopts the TYR-CT of German SCHNIEWINDT, signal processing unit 53 to adopt the DSP2812 of Beijing three fixed star scientific ﹠ technical corporation, and distributed devices 6 adopts the PowerEdge R410 of Dell.
See also Fig. 7.The state estimation backstage 8 of inflatable dc bushing be according to preventive trial data, on-Line Monitor Device data, the step of making an inspection tour the state estimation that data, operation of power networks monitoring data, familial defective data carry out inflatable dc bushing 1 is as follows:
The characteristic quantity of S101, the risk assessment of extraction inflatable dc bushing.
The preventive trial data, online monitoring data, tour data, the operation of power networks monitoring data that obtain according to the 6th radio receiving transmitting module 76, extract the characteristic component of inflatable dc bushing risk assessment, described characteristic component value is formed vectorial A, it is 1 * M dimensional vector, M is the characteristic component sum of inflatable dc bushing risk assessment, in the present embodiment, and M=26, according to monitoring result, obtain vectorial A shown in data (4):
Wherein: each characteristic component A of vectorial A
j(1≤j≤26) represent respectively: A
1Be the insulation resistance of inflatable dc bushing guide rod to end screen preventive trial; A
2Be the electric capacity of inflatable dc bushing guide rod to end screen preventive trial; A
3Be the dielectric loss amount of inflatable dc bushing guide rod to end screen preventive trial; A
4For shielding the insulation resistance of preventive trial over the ground in inflatable dc bushing end; A
5For shielding the electric capacity of preventive trial over the ground in inflatable dc bushing end; A
6For shielding the dielectric loss amount of preventive trial over the ground in inflatable dc bushing end; A
7Direct current resistance for inflatable dc bushing guide rod preventive trial; A
8Pressure for inflatable dc bushing preventive trial; A
9Gas composition for inflatable dc bushing preventive trial; A
10Filth value for inflatable dc bushing preventive trial; A
11Environment temperature for inflatable dc bushing on-line monitoring; A
12Ambient humidity for inflatable dc bushing on-line monitoring; A
13Filth value for inflatable dc bushing on-line monitoring; A
14Electric capacity and dielectric loss for the end of inflatable dc bushing on-line monitoring screen; A
15The SF that tests for inflatable dc bushing on-line monitoring
6The density of gas; A
16Pressure for inflatable dc bushing on-line monitoring; A
17Little water for inflatable dc bushing on-line monitoring; A
18Gas composition for inflatable dc bushing on-line monitoring; A
19Pressure for the tour of inflatable dc bushing; A
20Little water for the tour of inflatable dc bushing; A
21Temperature for the tour of inflatable dc bushing; A
22DC voltage amplitude for inflatable dc bushing operation of power networks supervision; A
23DC current amplitude for inflatable dc bushing operation of power networks supervision; A
24Be the DC voltage amplitude under the misoperation of inflatable dc bushing operation of power networks monitoring arrangement; A
25Be the DC current amplitude under the misoperation of inflatable dc bushing operation of power networks monitoring arrangement; A
26Be the dominant frequency under the misoperation of inflatable dc bushing operation of power networks monitoring arrangement.
The weight of the characteristic quantity of inflatable dc bushing status assessing system is obtained in S102, calculating.
Function based on the inflatable dc bushing is formed, and forms the functional module C of inflatable dc bushing
iWith the relational matrix E of characteristic component, its computing formula is formula (5):
Functional module C in the formula
iMiddle i gets [1,6], represents sleeving core submodule, capacitor core module, last panel module, grading ring module, silastic material module, SF respectively
6Gas module, E
IjBe the component of relational matrix E, k is the positive integer less than 26, D
jBe and functional module C
iRelevant characteristic quantity, wherein D
jComputing formula be formula (6):
A wherein
jJ the characteristic component of the vectorial A that forms for the characteristic component of status assessing system, a
jAnd b
jBe respectively characteristic component A
jHigher limit and lower limit, each characteristic component A
jCorresponding higher limit a
jWith lower limit b
jAs follows: b
1=10G Ω; a
2=5%, b
2=-5%; a
3=0.8; b
4=1G Ω; a
5=5%, b
5=-5%; a
6=2%, b
6=-2%; a
7=1%, b
7=-1%; b
8=8Mpa; a
9=100 μ L/L; a
10=0.3mg/cm
2a
11=80 ℃; a
12=85%; a
13=0.3mg/cm
2a
14=2%, b
14=-2%; b
15=8kg/m
3b
16=8MPa; a
17=500 μ L/L; a
18=100 μ L/L; b
19=8MPa; a
21=30 ℃; a
22=801KV; a
23=30000A; a
24=1200KV; a
25=25000A; a
26=20KHZ.
D
jRepresentative and functional module C
iRelevant characteristic quantity comprises: functional module C
1Relevant characteristic quantity is respectively [D
7, D
10, D
11, D
21, D
22, D
23, D
24, D
25, D
26]; Functional module C
2Relevant characteristic quantity is respectively [D
1, D
10, D
11, D
2, D
3, D
8, D
9, D
14]; Functional module C
3Relevant characteristic quantity is respectively [D
4, D
10, D
11, D
5, D
6, D
14]; Functional module C
4Relevant characteristic quantity is respectively [D
7, D
10, D
13, D
22, D
23, D
24, D
25, D
26]; Functional module C
5Relevant characteristic quantity is respectively [D
1, D
2, D
3, D
10, D
11, D
13]; Functional module C
6Relevant characteristic quantity is respectively [D
8, D
9, D
11, D
12, D
15, D
16, D
17, D
18, D
18, D
19, D
20].
Based on data (4), formula (5), formula (6) and characteristic component A
jHigher limit and lower limit, obtain the functional module C of inflatable dc bushing
iWith the relational matrix E(of characteristic component be 6 * 26 dimension matrixes) shown in data (7):
S103, based on the correction of equipment familial defective data to quantity of state.
According to link familial defective datas such as the manufacturing of artificial summary inflatable dc bushing, test, transportations, conclude corresponding quantity of state data, the characteristic component that will have the inflatable dc bushing state evaluating method of familial defective multiply by 0.8 respectively to be revised, operating experience through the type finds that it SF often occurs
6The problem that the little water of gas exceeds standard, therefore with among the vectorial A with this SF
6The on duty of the little water correspondence of gas revised with 0.8, obtains the correction feature value vector G based on the familial defective data, and in the present embodiment, revising feature value vector G the same with vectorial A also is 1 * 26 dimensional vector, and its result is shown in data (8):
S104, set up the state evaluation of inflatable dc bushing state evaluating method.
According to the vectorial G of described correction and relational matrix E, set up at sleeving core submodule, capacitor core module, last panel module, grading ring module, silastic material module, SF
6The state evaluation vector F of gas module, its computing formula is formula (9):
F=E×G （9）
Wherein, the status level component of i the module of state evaluation vector F is designated as F
i
Utilize formula (9) to calculate the sleeving core subelement of inflatable dc bushing, capacitor core unit, screen unit, end, grading ring unit, silastic material unit, SF
6The state evaluation value of gas cell, i.e. F
1-F
6, data (7) and data (8) are brought into draw state evaluation vector F in the formula (9) shown in data (10):
Again with each status level component F in the data (10)
iMultiply by respectively 0.17 and summation obtain the status level value of whole inflatable dc bushing, in the present embodiment, whole inflatable dc bushing state evaluation value is 0.162.
Status level value according to whole inflatable dc bushing is divided into normally (greater than 0 and less than 0.3), attention (greater than 0.3 and less than 0.55), unusual (greater than 0.55 and less than 0.85), serious (greater than 0.85 and less than 1) four kinds of states with its state, therefore, can conclude: this inflatable dc bushing is in normal condition at present.
Effect analysis: state evaluation value 0.162 judges that this sleeve pipe state is in normal condition at present.Therefore this method is carried out the state estimation of the inflatable dc bushing of system based on preventive trial data, on-Line Monitor Device data, tour data, operation of power networks monitoring data, familial defective data, break through the at present single state estimation that carries out at preventive trial or online monitoring data or manual patrol data simultaneously, improve the reliable rate of straight-flow system.
Present embodiment applies to:
1, ± state estimation of 500kV and above electric pressure inflatable dc bushing;
2, ± running status assessment and the aid decision making of 500kV and above electric pressure inflatable dc bushing.
Above-listed detailed description is at the specifying of possible embodiments of the present invention, and this embodiment is not in order to limiting claim of the present invention, and the equivalence that all the present invention of disengaging do is implemented or change, all should be contained in the claim of this case.
Claims (9)
1. an inflatable dc bushing status assessing system is characterized in that it comprises: the preventive trial instrument (2) that is used for inflatable dc bushing (1) is carried out preventive trial; Be used for inflatable dc bushing (1) is carried out the on-Line Monitor Device (3) of on-line monitoring; For the mobile device (4) that inflatable dc bushing (1) is maked an inspection tour; Be used for inflatable dc bushing (1) is carried out the operation of power networks monitoring arrangement (5) that operation of power networks monitors; Distributed devices (6) for the familial defective data of uploading inflatable dc bushing (1); For the state estimation backstage (8) that the state of inflatable dc bushing (1) is analyzed; And the familial defective data uploaded of the tour data of the preventive trial data that are used for described preventive trial instrument (2) is obtained, online monitoring data that on-Line Monitor Device (3) is obtained, mobile device (4) record, operation of power networks monitoring data that operation of power networks monitoring arrangement (5) obtains and distributed devices (6) all is sent to the communication device (7) of state estimation backstage (8).
2. inflatable dc bushing status assessing system according to claim 1, it is characterized in that, described communication device (7) comprises first radio receiving transmitting module (71) that links to each other with the output terminal of preventive trial instrument (2), second radio receiving transmitting module (72) that links to each other with the output terminal of on-Line Monitor Device (3), the 3rd radio receiving transmitting module (73) that links to each other with the output terminal of mobile device (4), the 4th radio receiving transmitting module (74) that links to each other with the output terminal of operation of power networks monitoring arrangement (5), the 5th radio receiving transmitting module (75) that links to each other with the output terminal of distributed devices (6), and the 6th radio receiving transmitting module (76) that links to each other with the input end of state estimation backstage (8), described first radio receiving transmitting module (71), second radio receiving transmitting module (72), the 3rd radio receiving transmitting module (73), the 4th radio receiving transmitting module (74), the 5th radio receiving transmitting module (75) all carries out data transmission with the 6th radio receiving transmitting module (76) by wireless network.
3. inflatable dc bushing status assessing system according to claim 2, it is characterized in that described preventive trial instrument (2) comprises dielectric loss tester (21), gas composition analyser (22), little water gaging instrument (23), temperature measuring set (24), gas-pressure survey meter (25), direct current resistance measurer (26), the filthy measuring instrument (27) that is connected between inflatable dc bushing (1) and first radio receiving transmitting module (71).
4. inflatable dc bushing status assessing system according to claim 2, it is characterized in that described on-Line Monitor Device (3) comprises the environment temperature on-line monitoring instrument (31) that is connected between inflatable dc bushing (1) and second radio receiving transmitting module (72), ambient humidity on-line monitoring instrument (32), surface filth on-line monitoring instrument (33), electric capacity and the dielectric loss on-line monitoring instrument (34) of end screen, the density on-line monitoring instrument (35) of SF6, pressure on-line monitoring instrument (36), micro-water content on-line monitoring instrument (37) and gas composition on-line monitoring instrument (38).
5. inflatable dc bushing status assessing system according to claim 2, it is characterized in that, described operation of power networks monitoring arrangement (5) comprises DC voltage transformer (51), DC current transformer (52) and signal processing unit (53), the input end of described DC voltage transformer (51), DC current transformer (52) all links to each other with inflatable dc bushing (1), and its output terminal all is connected to the 4th radio receiving transmitting module (74) by signal processing unit (53).
6. adopt each described inflatable dc bushing status assessing system of claim 1-5 to carry out the method for state estimation, it is characterized in that it may further comprise the steps:
(1) according to preventive trial data, online monitoring data, tour data, operation of power networks monitoring data, extract the characteristic component of inflatable dc bushing risk assessment, described characteristic component value is formed vectorial A, its size is 1 * M, and M is the characteristic component sum of inflatable dc bushing risk assessment;
(2) form based on the function of inflatable dc bushing, form the functional module C of inflatable dc bushing
iWith the relational matrix E of characteristic component, its computing formula is formula (1):
Functional module C in the formula
iMiddle i gets [1,6], represents sleeving core submodule, capacitor core module, last panel module, grading ring module, silastic material module, SF respectively
6Gas module, E
IjBe the component of relational matrix E, D
jBe and functional module C
iRelevant characteristic quantity, wherein D
jComputing formula be formula (2):
A wherein
jJ the characteristic component of the vectorial A that forms for the characteristic component of status assessing system, a
jAnd b
jBe respectively characteristic component A
jHigher limit and lower limit, j, k are positive integer and 1≤j≤M, k≤M;
(3) according to the familial defective data, conclude corresponding quantity of state data, the characteristic component A that will have the familial defective
jMultiply by 0.8 respectively and revise, obtain revising vectorial G, its size is 1 * M;
(4) according to the vectorial G of described correction and relational matrix E, set up at sleeving core submodule, capacitor core module, last panel module, grading ring module, silastic material module, SF
6The state evaluation vector F of gas module, its computing formula is formula (3):
F=E×G （3）
Wherein, the status level component of i the module of state evaluation vector F is designated as F
i
7. method according to claim 6 is characterized in that, described M=26, wherein:
A
1Be the insulation resistance of inflatable dc bushing guide rod to end screen preventive trial;
A
2Be the electric capacity of inflatable dc bushing guide rod to end screen preventive trial;
A
3Be the dielectric loss amount of inflatable dc bushing guide rod to end screen preventive trial;
A
4For shielding the insulation resistance of preventive trial over the ground in inflatable dc bushing end;
A
5For shielding the electric capacity of preventive trial over the ground in inflatable dc bushing end;
A
6For shielding the dielectric loss amount of preventive trial over the ground in inflatable dc bushing end;
A
7Direct current resistance for inflatable dc bushing guide rod preventive trial;
A
8Pressure for inflatable dc bushing preventive trial;
A
9Gas composition for inflatable dc bushing preventive trial;
A
10Filth value for inflatable dc bushing preventive trial;
A
11Environment temperature for inflatable dc bushing on-line monitoring;
A
12Ambient humidity for inflatable dc bushing on-line monitoring;
A
13Filth value for inflatable dc bushing on-line monitoring;
A
14Electric capacity and dielectric loss for the end of inflatable dc bushing on-line monitoring screen;
A
15The SF that tests for inflatable dc bushing on-line monitoring
6The density of gas;
A
16Pressure for inflatable dc bushing on-line monitoring;
A
17Little water for inflatable dc bushing on-line monitoring;
A
18Gas composition for inflatable dc bushing on-line monitoring;
A
19Pressure for the tour of inflatable dc bushing;
A
20Little water for the tour of inflatable dc bushing;
A
21Temperature for the tour of inflatable dc bushing;
A
22DC voltage amplitude for inflatable dc bushing operation of power networks supervision;
A
23DC current amplitude for inflatable dc bushing operation of power networks supervision;
A
24Be the DC voltage amplitude under the misoperation of inflatable dc bushing operation of power networks monitoring arrangement;
A
25Be the DC current amplitude under the misoperation of inflatable dc bushing operation of power networks monitoring arrangement;
A
26Be the dominant frequency under the misoperation of inflatable dc bushing operation of power networks monitoring arrangement.
8. method according to claim 7 is characterized in that, each characteristic component A
jCorresponding higher limit a
jWith lower limit b
jAs follows: b
1=10G Ω; a
2=5%, b
2=-5%; a
3=0.8; b
4=1G Ω; a
5=5%, b
5=-5%; a
6=2%, b
6=-2%; a
7=1%, b
7=-1%; b
8=8Mpa; a
9=100 μ L/L; a
10=0.3mg/cm
2a
11=80 ℃; a
12=85%; a
13=0.3mg/cm
2a
14=2%, b
14=-2%; b
15=8kg/m
3b
16=8MPa; a
17=500 μ L/L; a
18=100 μ L/L; b
19=8MPa; a
20=250; a
21=30 ℃; a
22=801KV; a
23=30000A; a
24=1200KV; a
25=25000A; a
26=20KHZ.
9. method according to claim 6 is characterized in that, described D
jRepresentative and C
iThe characteristic quantity that module is relevant comprises:
Functional module C
1Relevant characteristic quantity is respectively [D
7, D
10, D
11, D
21, D
22, D
23, D
24, D
25, D
26];
Functional module C
2Relevant characteristic quantity is respectively [D
1, D
10, D
11, D
2, D
3, D
8, D
9, D
14];
Functional module C
3Relevant characteristic quantity is respectively [D
4, D
10, D
11, D
5, D
6, D
14];
Functional module C
4Relevant characteristic quantity is respectively [D
7, D
10, D
13, D
22, D
23, D
24, D
25, D
26];
Functional module C
5Relevant characteristic quantity is respectively [D
1, D
2, D
3, D
10, D
11, D
13];
Functional module C
6Relevant characteristic quantity is respectively [D
8, D
9, D
11, D
12, D
15, D
16, D
17, D
18, D
18, D
19, D
20].
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| CN201310153831.8A CN103235242B (en) | 2013-04-27 | 2013-04-27 | Inflatable direct current sleeve state evaluation system and state evaluation method |
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