CN106019092A - Comprehensive online monitoring device for distribution transformer - Google Patents
Comprehensive online monitoring device for distribution transformer Download PDFInfo
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- CN106019092A CN106019092A CN201610319804.7A CN201610319804A CN106019092A CN 106019092 A CN106019092 A CN 106019092A CN 201610319804 A CN201610319804 A CN 201610319804A CN 106019092 A CN106019092 A CN 106019092A
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- 238000012544 monitoring process Methods 0.000 claims abstract description 23
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- 230000004888 barrier function Effects 0.000 claims description 16
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- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 8
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- -1 compound rare-earth Chemical class 0.000 claims description 8
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- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 4
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- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
- VKJLWXGJGDEGSO-UHFFFAOYSA-N barium(2+);oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[O-2].[Ti+4].[Ba+2] VKJLWXGJGDEGSO-UHFFFAOYSA-N 0.000 claims description 4
- 239000001110 calcium chloride Substances 0.000 claims description 4
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 4
- 239000006229 carbon black Substances 0.000 claims description 4
- 239000004020 conductor Substances 0.000 claims description 4
- 229920001577 copolymer Polymers 0.000 claims description 4
- 239000003431 cross linking reagent Substances 0.000 claims description 4
- 229920003020 cross-linked polyethylene Polymers 0.000 claims description 4
- 239000004703 cross-linked polyethylene Substances 0.000 claims description 4
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 claims description 4
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- 229920001684 low density polyethylene Polymers 0.000 claims description 4
- 239000004702 low-density polyethylene Substances 0.000 claims description 4
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 4
- 239000000347 magnesium hydroxide Substances 0.000 claims description 4
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 4
- 239000000395 magnesium oxide Substances 0.000 claims description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 4
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 4
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 150000002978 peroxides Chemical class 0.000 claims description 4
- 229920001084 poly(chloroprene) Polymers 0.000 claims description 4
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- 235000012239 silicon dioxide Nutrition 0.000 claims description 4
- RYYKJJJTJZKILX-UHFFFAOYSA-M sodium octadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCCCC([O-])=O RYYKJJJTJZKILX-UHFFFAOYSA-M 0.000 claims description 4
- 125000003011 styrenyl group Chemical class [H]\C(*)=C(/[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 claims description 4
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- 229920002725 thermoplastic elastomer Polymers 0.000 claims description 4
- 125000002813 thiocarbonyl group Chemical group *C(*)=S 0.000 claims description 4
- YNJBWRMUSHSURL-UHFFFAOYSA-N trichloroacetic acid Chemical compound OC(=O)C(Cl)(Cl)Cl YNJBWRMUSHSURL-UHFFFAOYSA-N 0.000 claims description 4
- 239000011787 zinc oxide Substances 0.000 claims description 4
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
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- 238000004804 winding Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
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- 229910002091 carbon monoxide Inorganic materials 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
- G01R31/12—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
- G01R31/1209—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 using acoustic measurements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/359—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using near infrared light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
-
- 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
Abstract
The invention relates to a comprehensive online monitoring device for a distribution transformer. The comprehensive online monitoring device comprises a signal conditioning and filtering circuit, a master control circuit, a communication circuit, and a power supply circuit. The power supply circuit supplies power to the master control circuit and the communication circuit. The master control circuit is in communication connection with the communication circuit via a RS232 serial circuit. The signal interface of the master control circuit is connected with the signal conditioning and filtering circuit. The signal conditioning and filtering circuit is connected with, via a shielding detection line, an infrared spectrum sensor, a ultrahigh frequency and ultrasonic sensor, a current transformer, a voltage transformer, a temperature sensor and pressure sensor which are distributed in the transformer. The comprehensive online monitoring device is installed at distribution transformer field, acquires analog signals, performs conditioning, filtering, and analog-to-digital conversion on the analog signals, performs intelligent determination by a single-chip microcomputer, and sends short messages including distribution transformer abnormal information to a monitoring center and a distribution on-duty cell phone via a GSM network. Monitoring center monitoring system software gives a prompt about the specific position and the fault type of a faulted distribution transformer according to the obtained distribution transformer running state information.
Description
Technical field
The present invention relates to a kind of on-Line Monitor Device, a kind of comprehensive on-line monitoring apparatus for distribution transformer, electrical equipment online supervision equipment technology field.
Background technology
One of equipment that power transformer is main as power system, the most expensive, its safe operation is to ensureing power supply reliability important in inhibiting.For improving the reliability of Operation of Electric Systems, the economic loss that minimizing fault and accident cause, periodically transformator be carried out the preventive trial that insulate.If transformator has a power failure and carries out preventive trial, it will the normal power supply of impact.Therefore, transformator operation conditions on-line monitoring is more and more paid attention to.
Current most of on-line monitoring system is that the single parameter to single equipment is monitored, and the operation conditions of transformator to be reflected, by single performance index, all can only reflect its state of insulation from certain one side, be difficult to comprehensively reflect the running status of transformator.Additionally due to this kind of monitoring device working environment is more complicated, operating temperature is high, big by electromagnetic effect, often causing sampling precision to reduce because of electromagnetic interference, there is inaccurate situation in fault detect, and is often in the working environment of high temperature the service life that can directly shorten monitoring device.
Summary of the invention
The technical problem to be solved is, the shortcoming overcoming prior art, a kind of comprehensive on-line monitoring apparatus for distribution transformer is provided, multiple data of distribution transformer can not only be carried out on-line monitoring simultaneously, can also effectively eliminate the electromagnetic interference impact on equipment precision, improve the service life of monitoring device.
The present invention solves the technical scheme of above technical problem: provide a kind of comprehensive on-line monitoring apparatus for distribution transformer, including signal condition and filter circuit, governor circuit, telecommunication circuit and power circuit, described power circuit is described governor circuit and telecommunication circuit is powered, described governor circuit is communicated to connect by RS323 serial port circuit with described telecommunication circuit, the signaling interface of described governor circuit is connected with described signal condition and filter circuit, described signal condition and filter circuit are by shield detection line and the infrared spectrum sensor being distributed in transformator, hyperfrequency and ultrasonic sensor, current transformer, voltage transformer, temperature sensor and pressure transducer are connected, described signal condition and filter circuit and governor circuit use anti-crosstalk pcb board to make,
Described pcb board is from top to bottom followed successively by electrical layer, insulating barrier, bonding heat-conducting layer and heat dissipating layer, described insulating barrier is added hot-extrudable preparing by compositions A with compositions B 1:3-3.5 in mass ratio, wherein compositions A includes following components according to the mass fraction: Low Density Polyethylene 3-4 part, ethylene-vinyl acetate copolymer 3-4 part, modifying agent 0.5-1 part, neoprene 13-14 part, methyl vinyl silicone rubber 15-25 part, methyl vinyl silicone rubber 3-4 part, maleic anhydride grafted ethene-acetate copolymer 13-14 part；Compositions B includes following components according to the mass fraction: crosslinked polyethylene: 35-42 part, ethylene-vinyl acetate copolymer: 15-18 part, dodecyl sodium sulfate: 4-7 part, calcium chloride: 2-5 part, Barium metatitanate.: 1-3 part, magnesium oxide: 1-2 part, silicon dioxide: 2-5 part, NX2040 firming agent: 11-14 part, peroxide cross-linking agent: 5-9 part, ethylene bis stearamide: 5-8 part, dibutyl tin laurate: 3-6 part, di-t-butyl peroxide: 2-8 part, compound rare-earth: 2-3 part；Described compound rare-earth chemical composition weight/mass percentage composition is: Nd:6-13%, Ce:3-7%, Er:6-10%, Pr:6-13%, Pm:3-5%, and surplus is La；
Described bonding heat-conducting layer is the alumina particles being coated with by polymer composition, described polymer composition includes following components according to the mass fraction: styrene analog thermoplastic elastomer 35-40 part, trichloroacetic acid 8-12 part, hydroxyethyl cellulose 5-10 part, thermoplastic polymer resin's 10-13 part, silica powder 4-8 part, aluminium hydroxide 5-7 part；
Described heat dissipating layer is thermal radiation coating or metal-powder coating.
The present invention limits technical scheme further: be previously described for the comprehensive on-line monitoring apparatus of distribution transformer, and described governor circuit is provided with Peripheral Interface and display interface, connects input keyboard on described Peripheral Interface, connects display on described display interface.
It is previously described for the comprehensive on-line monitoring apparatus of distribution transformer, described shield detection line is followed successively by conductor, flame-retardant filler, shielding line stratum reticulare and insulating barrier from the inside to the outside, described fire-retardant filler is aluminium hydroxide flame-retardant filler, the composition of described insulating barrier includes following components according to the mass fraction: ethylene propylene diene rubber: 45-50 part, sodium stearate: 11-17 part, zinc oxide: 2-8 part, thiocarbonyl group dimethylamine: 3-5 part, wear-resisting carbon black: 1-5 part, antiager: 2-4 part, fire retardant 5-8 part, antifreezing agent: 1-3 part；Described fire retardant is in aluminium hydroxide: the ratio mixing of magnesium hydroxide=5:1.8.
Further, being previously described for the comprehensive on-line monitoring apparatus of distribution transformer, described governor circuit selects STC12C5A32AD as main control chip.
The invention has the beneficial effects as follows: the present invention have employed the near-infrared spectrum technique of advanced person in terms of Gases Dissolved in Transformer Oil and micro-water monitoring, coordinate electronic sensor technology, it is possible to hydrogen, carbon monoxide, carbon dioxide, methane, acetylene, ethylene, ethane and the Wei Shui produced in transformer oil is carried out the analysis of quantitative and qualitative.Acoustoelectric combined technology is used in terms of partial discharge monitoring, comprehensive employing hyperfrequency and ultrasonic detection technology method, can efficiently solve the sensitivity problem of partial discharge signal detection under on-the-spot interference environment, improve testing result credibility, the source of putting of simultaneously can playing a game positions, and positioning precision is high.Bushing shell for transformer on-line monitoring uses core-theaded type Zero Magnetic Flux Little Electric Current Transducer technology, the voltage parameter of monitoring sleeve, dielectric loss parameter and residing environmental factors, comprehensively judges the security performance of sleeve pipe.Transformer iron core grounding current on-line monitoring uses brand-new CT electromagnetic technique and numeral integrated technology, is used for measuring the technical parameters such as ac leakage stream.Temperature of transformer winding uses optical fiber measurement technology, measures winding each measuring point temperature the most accurately, weighs the performance of transformator.
Installing terminal equipment of the present invention is on-the-spot in distribution transforming, gathers analogue signal and after conditioning, filtering and analog digital conversion etc. process, then judges through Intelligent Single-Chip Based, distribution transformer abnormal information is sent short breath to Surveillance center and distribution mobile phone on duty by GSM network.Surveillance center's monitoring system software is according to obtained distribution transformer health information, give the early warnings such as distribution transformer particular location, fault type that are out of order, hold mobile phone personnel on duty according to fault short message prompt, the relevant personnel can be arranged to eliminate distribution transformer exception and fault in time.GSM communication network is the bridge transmitting data between monitoring point and Surveillance center, and presence states information data is transferred to Surveillance center by network.
The board structure of circuit of the present invention uses anti-crosstalk pcb board and the cooperation of shield detection line, and the interference being so possible to prevent distribution transforming on-the-spot causes the sampling precision of equipment to reduce, and inaccurate situation occurs in fault detect, it is also possible to extend the service life of monitoring device.
Accompanying drawing explanation
Fig. 1 is hardware architecture diagram of the present invention。
Fig. 2 is signal conditioning circuit figure in embodiment 1.
Detailed description of the invention
Embodiment 1
nullThe present embodiment provides a kind of comprehensive on-line monitoring apparatus for distribution transformer，Structure is as shown in Figure 1，Including signal condition and filter circuit、Governor circuit、Telecommunication circuit and power circuit，Power circuit is governor circuit and telecommunication circuit is powered，Governor circuit is communicated to connect by RS323 serial port circuit with telecommunication circuit，The signaling interface of governor circuit is connected with signal condition and filter circuit，Governor circuit selects STC12C5A32AD as main control chip，Telecommunication circuit selects the SIM300 module of SIMCOM company，Power circuit uses the HX-12V2A Switching Power Supply that rump electron Science and Technology Ltd. of Guangzhou China produces，This Switching Power Supply has temperature protection、Overcurrent protection and short-circuit protection，AC90-240V Width funtion inputs，High-low pressure is isolated，DC12V exports，Compact，431 accurate voltage stabilizings.Signal condition and filter circuit are connected with infrared spectrum sensor, hyperfrequency and ultrasonic sensor, current transformer, voltage transformer, temperature sensor and the pressure transducer being distributed in transformator by shield detection line, the signal condition of the present embodiment selection and filter circuit, the most first by current signal again through integrated electro coupled apparatus, photoelectrical coupler makes there is the insulation resistance more than 1010 between input and output, two ends isolation of system comes, avoid output feedback that input is produced interference, then carried out integration process by signal conditioning circuit；Governor circuit is provided with Peripheral Interface and display interface, connects input keyboard on Peripheral Interface, connects display, signal condition and filter circuit and governor circuit and use anti-crosstalk pcb board to make on display interface.
Anti-crosstalk pcb board is from top to bottom followed successively by electrical layer, insulating barrier, bonding heat-conducting layer and heat dissipating layer, insulating barrier is added hot-extrudable preparing by compositions A with compositions B 1:3 in mass ratio, wherein compositions A includes following components according to the mass fraction: Low Density Polyethylene 3 parts, ethylene-vinyl acetate copolymer 3 parts, modifying agent 0.5 part, neoprene 13 parts, methyl vinyl silicone rubber 18 parts, methyl vinyl silicone rubber 3 parts, maleic anhydride grafted ethene-acetate copolymer 13 parts；Compositions B includes following components according to the mass fraction: crosslinked polyethylene: 35 parts, ethylene-vinyl acetate copolymer: 15 parts, dodecyl sodium sulfate: 4 parts, calcium chloride: 2 parts, Barium metatitanate.: 2 parts, magnesium oxide: 1 part, silicon dioxide: 2 parts, NX2040 firming agent: 11 parts, peroxide cross-linking agent: 5 parts, ethylene bis stearamide: 5 parts, dibutyl tin laurate: 3 parts, di-t-butyl peroxide: 2 parts, compound rare-earth: 2 parts；Compound rare-earth chemical composition weight/mass percentage composition is: Nd:6%, Ce:3%, Er:6%, Pr:6%, Pm:3%, and surplus is La；
Bonding heat-conducting layer is the alumina particles being coated with by polymer composition, and polymer composition includes following components according to the mass fraction: styrene analog thermoplastic elastomer 35 parts, trichloroacetic acid 8 parts, hydroxyethyl cellulose 5 parts, thermoplastic polymer resin 10 parts, silica powder 4 parts, aluminium hydroxide 5 parts；Heat dissipating layer is metal-powder coating.
The detection line that covers of the present embodiment is followed successively by conductor, flame-retardant filler, shielding line stratum reticulare and insulating barrier from the inside to the outside, fire-retardant filler is aluminium hydroxide flame-retardant filler, the composition of insulating barrier includes following components according to the mass fraction: ethylene propylene diene rubber: 45 parts, sodium stearate: 14 parts, zinc oxide: 4 parts, thiocarbonyl group dimethylamine: 3 parts, wear-resisting carbon black: 2 parts, antiager: 2 parts, fire retardant: 6 parts, antifreezing agent: 2 parts；Fire retardant is in aluminium hydroxide: the ratio mixing of magnesium hydroxide=5:1.8.
Embodiment 2
The present embodiment is that structure is identical with embodiment 1 structure, and difference is the anti-crosstalk pcb board used and covers detection line.
Anti-crosstalk pcb board is from top to bottom followed successively by electrical layer, insulating barrier, bonding heat-conducting layer and heat dissipating layer, insulating barrier is added hot-extrudable preparing by compositions A with compositions B 1:3.5 in mass ratio, wherein compositions A includes following components according to the mass fraction: Low Density Polyethylene 3 parts, ethylene-vinyl acetate copolymer 4 parts, modifying agent 0.5 part, neoprene 13 parts, methyl vinyl silicone rubber 25 parts, methyl vinyl silicone rubber 3 parts, maleic anhydride grafted ethene-acetate copolymer 14 parts；Compositions B includes following components according to the mass fraction: crosslinked polyethylene: 35 parts, ethylene-vinyl acetate copolymer: 15 parts, dodecyl sodium sulfate: 6 parts, calcium chloride: 4 parts, Barium metatitanate.: 3 parts, magnesium oxide: 2 parts, silicon dioxide: 5 parts, NX2040 firming agent: 14 parts, peroxide cross-linking agent: 9 parts, ethylene bis stearamide: 8 parts, dibutyl tin laurate: 3 parts, di-t-butyl peroxide: 8 parts, compound rare-earth: 3 parts；Compound rare-earth chemical composition weight/mass percentage composition is: Nd:13%, Ce:7%, Er:6%, Pr:13%, Pm:5%, and surplus is La；
Bonding heat-conducting layer is the alumina particles being coated with by polymer composition, and polymer composition includes following components according to the mass fraction: styrene analog thermoplastic elastomer 40 parts, trichloroacetic acid 12 parts, hydroxyethyl cellulose 5 parts, thermoplastic polymer resin 13 parts, silica powder 8 parts, aluminium hydroxide 7 parts；Heat dissipating layer is metal-powder coating.
The detection line that covers of the present embodiment is followed successively by conductor, flame-retardant filler, shielding line stratum reticulare and insulating barrier from the inside to the outside, fire-retardant filler is aluminium hydroxide flame-retardant filler, the composition of insulating barrier includes following components according to the mass fraction: ethylene propylene diene rubber: 50 parts, sodium stearate: 17 parts, zinc oxide: 6 parts, thiocarbonyl group dimethylamine: 4 parts, wear-resisting carbon black: 5 parts, antiager: 4 parts, fire retardant 8 parts, antifreezing agent: 3 parts；Fire retardant is in aluminium hydroxide: the ratio mixing of magnesium hydroxide=5:1.8.
In addition to the implementation, the present invention can also have other embodiments.The technical scheme that all employing equivalents or equivalent transformation are formed, all falls within the protection domain of application claims.
Claims (4)
1. the comprehensive on-line monitoring apparatus for distribution transformer, including signal condition and filter circuit, governor circuit, telecommunication circuit and power circuit, it is characterized in that: described power circuit is described governor circuit and telecommunication circuit is powered, described governor circuit is communicated to connect by RS323 serial port circuit with described telecommunication circuit, the signaling interface of described governor circuit is connected with described signal condition and filter circuit, described signal condition and filter circuit are by shield detection line and the infrared spectrum sensor being distributed in transformator, hyperfrequency and ultrasonic sensor, current transformer, voltage transformer, temperature sensor and pressure transducer are connected, described signal condition and filter circuit and governor circuit use anti-crosstalk pcb board to make,
Described pcb board is from top to bottom followed successively by electrical layer, insulating barrier, bonding heat-conducting layer and heat dissipating layer, described insulating barrier is added hot-extrudable preparing by compositions A with compositions B 1:3-3.5 in mass ratio, wherein compositions A includes following components according to the mass fraction: Low Density Polyethylene 3-4 part, ethylene-vinyl acetate copolymer 3-4 part, modifying agent 0.5-1 part, neoprene 13-14 part, methyl vinyl silicone rubber 15-25 part, methyl vinyl silicone rubber 3-4 part, maleic anhydride grafted ethene-acetate copolymer 13-14 part；Compositions B includes following components according to the mass fraction: crosslinked polyethylene: 35-42 part, ethylene-vinyl acetate copolymer: 15-18 part, dodecyl sodium sulfate: 4-7 part, calcium chloride: 2-5 part, Barium metatitanate.: 1-3 part, magnesium oxide: 1-2 part, silicon dioxide: 2-5 part, NX2040 firming agent: 11-14 part, peroxide cross-linking agent: 5-9 part, ethylene bis stearamide: 5-8 part, dibutyl tin laurate: 3-6 part, di-t-butyl peroxide: 2-8 part, compound rare-earth: 2-3 part；Described compound rare-earth chemical composition weight/mass percentage composition is: Nd:6-13%, Ce:3-7%, Er:6-10%, Pr:6-13%, Pm:3-5%, and surplus is La；
Described bonding heat-conducting layer is the alumina particles being coated with by polymer composition, described polymer composition includes following components according to the mass fraction: styrene analog thermoplastic elastomer 35-40 part, trichloroacetic acid 8-12 part, hydroxyethyl cellulose 5-10 part, thermoplastic polymer resin's 10-13 part, silica powder 4-8 part, aluminium hydroxide 5-7 part；
Described heat dissipating layer is thermal radiation coating or metal-powder coating.
Comprehensive on-line monitoring apparatus for distribution transformer the most according to claim 1, it is characterised in that: described governor circuit is provided with Peripheral Interface and display interface, connects input keyboard on described Peripheral Interface, connects display on described display interface.
Comprehensive on-line monitoring apparatus for distribution transformer the most according to claim 1, it is characterized in that: described shield detection line is followed successively by conductor, flame-retardant filler, shielding line stratum reticulare and insulating barrier from the inside to the outside, described fire-retardant filler is aluminium hydroxide flame-retardant filler, the composition of described insulating barrier includes following components according to the mass fraction: ethylene propylene diene rubber: 45-50 part, sodium stearate: 11-17 part, zinc oxide: 2-8 part, thiocarbonyl group dimethylamine: 3-5 part, wear-resisting carbon black: 1-5 part, antiager: 2-4 part, fire retardant 5-8 part, antifreezing agent: 1-3 part；Described fire retardant is in aluminium hydroxide: the ratio mixing of magnesium hydroxide=5:1.8.
Comprehensive on-line monitoring apparatus for distribution transformer the most according to claim 1, it is characterised in that: described governor circuit selects STC12C5A32AD as main control chip.
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Address after: 210019, No. 69, the Fuchun River East Street, Jianye District, Jiangsu, Nanjing (15 South Building of Fang Zhong building) Applicant after: Jiangsu Yulin power Polytron Technologies Inc Address before: 210000 south of the Fuchun River East Street, Jianye District, Nanjing, Jiangsu, south of Fang Zhong building, 15 Applicant before: Jiangsu Lin Pai Power Tech Corp. Inc. |
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