CN106496747A - A kind of high voltage direct current cable - Google Patents
A kind of high voltage direct current cable Download PDFInfo
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- CN106496747A CN106496747A CN201611021979.6A CN201611021979A CN106496747A CN 106496747 A CN106496747 A CN 106496747A CN 201611021979 A CN201611021979 A CN 201611021979A CN 106496747 A CN106496747 A CN 106496747A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/06—Pretreated ingredients and ingredients covered by the main groups C08K3/00 - C08K7/00
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/12—Adsorbed ingredients, e.g. ingredients on carriers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Organic Insulating Materials (AREA)
Abstract
A kind of high voltage direct current cable, XLPE cable insulant of the cable comprising ferrite nanometer particle, the insulant include the component of following weight portion：80 100 parts of Low Density Polyethylene, 0.5 2 parts of ferrite nanometer particle, 10 20 parts of white carbon black, 0.1 3 parts of antioxidant, 13 parts of stabilizer, 10 20 parts of solvent；Wherein described ferrite nanometer particle is prepared in accordance with the following methods：Prepare Ni2+、Fe3+Mol ratio is 13:1 mixed solution, and molecular sieve is added, stir 12 36h at normal temperatures, through filtering and washing, be put into after drying in Muffle furnace and be warming up to 800 1100 DEG C of 1 6h of roasting；Then by roasting after product be placed in hydrofluoric acid solution, stir 2 3h, solid sample through filter, washing, dry after obtain Ni ferrite nanotube.High voltage direct current cable material of the present invention can effectively suppress the accumulation of insulant Space-charge, and the electric field threshold value of space charge injection is improved, reduces the effect of the insulant electrical conductivity increase that space charge limited current (SCLC) causes.
Description
Technical field
The present invention relates to a kind of high voltage direct current cable and preparation method thereof, especially a kind of interpolation modified nanoparticles
High voltage direct current cable prepared by XLPE cable insulant.
Background technology
With constantly developing for power system, network system is increasingly sophisticated, and it is solid that AC transmission system exposes some
The transmission of electricity of some shortcomings, particularly telecommunicate is limited by running simultaneously stability, in this case, direct current transportation skill
Art is attracted people's attention again.The especially development of the voltage source converter of turn-off device and PWM technology, it is to avoid XLPE electricity
The polarity upset of cable, promotes the development of flexible DC power transmission.Technology of HVDC based Voltage Source Converter (HVDC Light technology) has
Controllability is high, design and construction facilitate environmental protection, take up an area the advantages of need not communicating between little and current conversion station, Renewable resource grid-connected,
Distributed power generation is grid-connected, island with power, urban distribution network are powered etc., and aspect has a clear superiority.Compared with ac cable, due to exhausted
The DC electrical intensity of edge medium is higher than alternating-current electric intensity, and under same size, direct current cables transmission line capability is that ac cable is defeated
2 times of capacitance, it is only 1/2～2/3 of wire rod used by ac cable to convey wire rod used by identical power DC cables.
At present, in the world direct current cables be used successfully to comercial operation best-run be ABB AB cable product, highest
Electric pressure reaches 320kV.Other national insulated cable general situations of development approximately as：French Nexans companies are exhausted using polyethylene
Edge, the electric pressure of cable is 500kV, without operating experience；The Pirelli companies of Italy are using crosslinked polyetylene insulated, electricity
The electric pressure of cable is 250kV, is only used for voltage commutation system, without operating experience；French Sagem companies adopt LDPE for cable
Insulation, electric pressure is 400kV, participates in the direct current transportation project research of Electricite De France；Japanese Viscas companies are using friendship
Connection polyethylene insulation, rated voltage is 500kV, without comercial operation experience.
There are substantial amounts of localized modes inside crosslinked polyethylene, electric as inner space can be caused during high-voltage DC cable insulating
Lotus gathers, electric field distortion, accelerates the voltage ageing of insulant, shortens the service life of insulant, especially when in insulation
Heteropolarity space charge accumulation may cause puncturing for insulant when more, make failure of insulation.Cross-linking polyethylene materials
When generation is aging, structure can change, and such as chemical bond rupture, medium micropore increase or grow dendritic structure etc., and these lack
Falling into increases will the trap number in medium, can cause space charge accumulation in the presence of electric field.
Used as the indispensable part of direct current transportation, space charge always restricts direct current cables and sends out XLPE direct current cables
The key issue of exhibition.In order to preferably solve problems with space charge, many scholars for affect the difference of distribution of space charge because
Element has carried out numerous studies.Conventional suppression space charge method is included by admixed with additives, blending, grafting, copolymerization etc..Add
Plus agent species has a lot, can substantially be divided into inorganic additive, organic additive, nucleator, free radical scavenger, heat resistanceheat resistant/big
Aging dose of gas etc..For example in oligomerisation of ethylene (LDPE), add three sugar pear alcohol effectively reduce spherulite size, reduce grain boundary defects
Formation；When adding chlorinated polyethylene (CPE) or ethylene/acrylic acid copolymer (EAA) mass fraction about 1% in LDPE,
Space charge effect and specific insulation can effectively be reduced, the starting voltage of direct current precompressed short circuit branch is improved；Add 1%
Ba-TiO3To in polyethylene, the space charge effect that can be effectively improved in polyethylene improves the breakdown strength of direct current precompressed short circuit
With dc breakdown intensity；1% or so voltage stabilizer is added in polyethylene, can reduce in ageing process macromole from
By the generation of base, the generation of deep trap is reduced, improve the insulation life of polymer.
Content of the invention
Ferrite MFe2O4(M is divalent metal element) is the important Inorganic Non-metallic Materials of a class, with high-melting-point, height
Mechanical strength, low-k and excellent optical property, in catalysis, electrochemistry, magnetic heating performance, industrial refractory and missile guidance
The field such as system windows extensive application.In the last few years, ferrite was used as enamel, the coloured material of pottery, gas sensitive, magnetic
Property the application such as absorbing material, catalysis material have been reported that.The traditional preparation methods of such material are high-temperature calcination hybrid metal oxygen
Compound or hydroxide, but the generation due to agglomeration, products therefrom particle diameter is larger and skewness, limits which further
Application.Bulk material surface or duct inwall are adsorbed onto using hard template method first by ferritic metal ion is formed, so
Afterwards through serial physical chemical process, ferrite is formed in bulk material surface, then again hard mould agent is removed, thus may be used
To obtain compared with Large ratio surface and the ferrite of specific pore passage structure, such that it is able to avoid Homogeneous synthesis and high-temperature calcination process institute
The problem that particle size is larger, specific surface area is relatively low that brings.
Present invention firstly provides ferrite nanometer particle is applied to cable insulation material, and using the material as main exhausted
Edge layer prepares a kind of high voltage direct current cable of function admirable.It is characterized in ferrite nano particles by surface modification, filling
To in crosslinked polyethylene, space charge is fettered, the life-span so as to extend power cable reaches 1-5 times.It has advanced technology, safety
Stable advantage.
A kind of high voltage direct current cable, it is characterised in that XLPE cable insulation material of the cable comprising ferrite nanometer particle
Material, the insulant include the component of following weight portion：
Low Density Polyethylene 80-100 parts, ferrite nanometer particle 0.5-2 parts, white carbon black 10-20 parts, antioxidant 0.1-3 parts,
Stabilizer 1-3 parts, solvent 10-20 parts.
The solvent is hexamethylene, toluene, normal octane, dimethyl carbonate, the one kind in diethyl carbonate；The stabilizer
Zinc petroleum sulfonate, ferric stearate, one or more in zinc stearate；The antioxidant is antioxidant 1010, antioxidant
1024th, the mixture of any one or several in antioxidant 1035, antioxidant 264 and DNP.
The ferrite nanometer particle is prepared in accordance with the following methods：Prepare Ni2+、Fe3+Mol ratio is 1-3:1 mixing is molten
Liquid, and molecular sieve is added, stir 12-36h at normal temperatures, through filtering and washing, be put into after drying in Muffle furnace and be warming up to 800-
1100 DEG C of roasting 1-6h；Then by roasting after product be placed in hydrofluoric acid solution, stir 2-3h, solid sample is through filtering, washing
Wash, dry after obtain Ni ferrite nanotube.
The molecular sieve is preferably MCM, ZSM Series Molecules sieve, more preferably MCM-41 or ZSM-15.
Converted with ferrum oxide and nickel oxide, the molecular sieve quality is 1-10 times of ferrum oxide and nickel oxide quality sum,
Preferably 3-6 times.
The preparation method of the XLPE cable insulant comprising ferrite nanometer particle, comprises the following steps：In proportion will
Linear low density polyethylene, antioxidant and white carbon black are together put into banbury and knead 30-50min in 100-120 DEG C；Will crosslinking
Agent carries out insulation mixing after adding banbury, obtains high voltage direct current cable and partly leads shielding electric material, and described insulation mixing is referred to
20-30min is kneaded at a temperature of 120-135 DEG C.
Cable of the present invention can effectively suppress the accumulation of insulant Space-charge, and improve space charge note
The electric field threshold value for entering, reduces the effect of the insulant electrical conductivity increase that space charge limited current (SCLC) causes.
Specific embodiment
The technical scheme that invents is described in detail with reference to specific embodiment.
Described in embodiment, ferrite nanometer particle is prepared in accordance with the following methods：Prepare Ni2+、Fe3+Mol ratio is 2:1
Mixed solution, and molecular sieve is added, stir 12h at normal temperatures, through filtering and washing, be put into after drying in Muffle furnace and be warming up to 800
DEG C roasting 6h；Then by roasting after product be placed in hydrofluoric acid solution, stir 2h, solid sample through filter, washing, dry after
Ni ferrite nanotube is obtained.
Embodiment 1
A kind of high voltage direct current cable, its major insulation material is using the XLPE cable insulation material comprising ferrite nanometer particle
Material, the insulant include the component of following weight portion, 80 parts of Low Density Polyethylene, 0.5 part of ferrite nanometer particle, white carbon black
10 parts, 0.5 part of antioxidant, 2 parts of stabilizer, 10 parts of solvent.
Embodiment 2
A kind of high voltage direct current cable, its major insulation material is using the XLPE cable insulation material comprising ferrite nanometer particle
Material, the insulant include the component of following weight portion, 100 parts of Low Density Polyethylene, 1 part of ferrite nanometer particle, white carbon black
10 parts, 0.1 part of antioxidant, 1 part of stabilizer, 20 parts of solvent.
Comparative example 1
A kind of high voltage direct current cable, its major insulation material adopt XLPE cable insulant, the insulant include with
The component of lower weight portion, 80 parts of Low Density Polyethylene, 10 parts of white carbon black, 0.5 part of antioxidant, 2 parts of stabilizer, 10 parts of solvent.
Comparative example 2
A kind of high voltage direct current cable, its major insulation material adopt XLPE cable insulant, the insulant include with
The component of lower weight portion, 100 parts of Low Density Polyethylene, 10 parts of white carbon black, 0.1 part of antioxidant, 1 part of stabilizer, 20 parts of solvent.
Degradation and breakdown voltage test is carried out to embodiment and comparative example, as a result as shown in the table：
| Embodiment 1 | Embodiment 2 | Comparative example 1 | Comparative example 2 | |
| Degradation (h) | 35.2 | 36.4 | 29.5 | 28.7 |
| Breakdown test (kV) | 28.6 | 27.5 | 18.5 | 17.3 |
The present invention can with others without prejudice to the spirit or essential characteristics of the present invention concrete form summarizing.The present invention's
All embodiments can only all be considered that the description of the invention rather than restriction, every technology according to the present invention content are made
Any trickle amendment for going out or equivalent, belong within technical scheme.
Claims (7)
1. a kind of high voltage direct current cable, it is characterised in that XLPE cable insulation material of the cable comprising ferrite nanometer particle
Material, the insulant include the component of following weight portion：Low Density Polyethylene 80-100 parts, ferrite nanometer particle 0.5-2 parts,
White carbon black 10-20 parts, antioxidant 0.1-3 parts, stabilizer 1-3 parts, solvent 10-20 parts；Wherein described ferrite nanometer particle according to
Prepared by following methods：Prepare Ni2+、Fe3+Mol ratio is 1-3:1 mixed solution, and molecular sieve is added, stir 12- at normal temperatures
36h, through filtering and washing, is put into after drying in Muffle furnace and is warming up to 800-1100 DEG C of roasting 1-6h；Then by roasting after product
It is placed in hydrofluoric acid solution, stirs 2-3h, solid sample obtains Ni ferrite nanotube after filtering, washing, dry.
2. high voltage direct current cable as claimed in claim 1, it is characterised in that the solvent is hexamethylene, toluene, normal octane, carbon
One kind in dimethyl phthalate, diethyl carbonate.
3. high voltage direct current cable as claimed in claim 1, it is characterised in that the stabilizer is zinc petroleum sulfonate, stearic acid
One or more in ferrum, zinc stearate.
4. high voltage direct current cable as claimed in claim 1, it is characterised in that the antioxidant is antioxidant 1010, antioxidant
1024th, the mixture of any one or several in antioxidant 1035, antioxidant 264 and DNP.
5. high voltage direct current cable as claimed in claim 1, it is characterised in that the molecular sieve is MCM, ZSM Series Molecules sieve,
More preferably MCM-41 or ZSM-15.
6. high voltage direct current cable as claimed in claim 1, it is characterised in that converted with ferrum oxide and nickel oxide, the molecular sieve
Quality is 1-10 times, preferably 3-6 times of ferrum oxide and nickel oxide quality sum.
7. the preparation method of the XLPE cable insulant used in high voltage direct current cable as described in any one of claim 1-6,
Comprise the following steps：Linear low density polyethylene, antioxidant and white carbon black are together put into banbury at 100-120 DEG C in proportion
Middle mixing 30-50min；Insulation mixing is carried out after cross-linking agent is added banbury, high voltage direct current cable is obtained and is partly led the electric material of shielding
Material, described insulation mixing to be referred to and knead 20-30min at a temperature of 120-135 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611021979.6A CN106496747A (en) | 2016-11-16 | 2016-11-16 | A kind of high voltage direct current cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611021979.6A CN106496747A (en) | 2016-11-16 | 2016-11-16 | A kind of high voltage direct current cable |
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| CN106496747A true CN106496747A (en) | 2017-03-15 |
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| CN201611021979.6A Pending CN106496747A (en) | 2016-11-16 | 2016-11-16 | A kind of high voltage direct current cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111103466A (en) * | 2018-10-25 | 2020-05-05 | 耐克森公司 | Cable joint with integrated space charge detector |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992013227A1 (en) * | 1991-01-28 | 1992-08-06 | Tamaqua Cable Products Corporation | Locatable magnetic plastic jacket on a non-metallic cable |
| CN102250416A (en) * | 2011-05-25 | 2011-11-23 | 佛山市顺德区高怡新塑料有限公司 | Electromagnetic shielding composite material capable of heating and preparation method thereof |
| CN103232246A (en) * | 2013-02-20 | 2013-08-07 | 国网智能电网研究院 | Preparation method of thermal spraying powder for ferrite corrosion-resistant coating |
| CN103435893A (en) * | 2013-08-28 | 2013-12-11 | 国家电网公司 | Transmission line lead anti-icing compound coil based on ferrite and preparation method thereof |
| CN103435897A (en) * | 2013-09-16 | 2013-12-11 | 黑龙江省润特科技有限公司 | Microwave induced intumescent flame-retardant silane crosslinked polyolefin sheath material for cables and preparation method thereof |
| CN106366419A (en) * | 2016-09-09 | 2017-02-01 | 国网山东省电力公司荣成市供电公司 | XLPE (cross-linked polyethylene) cable insulating material |
-
2016
- 2016-11-16 CN CN201611021979.6A patent/CN106496747A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992013227A1 (en) * | 1991-01-28 | 1992-08-06 | Tamaqua Cable Products Corporation | Locatable magnetic plastic jacket on a non-metallic cable |
| CN102250416A (en) * | 2011-05-25 | 2011-11-23 | 佛山市顺德区高怡新塑料有限公司 | Electromagnetic shielding composite material capable of heating and preparation method thereof |
| CN103232246A (en) * | 2013-02-20 | 2013-08-07 | 国网智能电网研究院 | Preparation method of thermal spraying powder for ferrite corrosion-resistant coating |
| CN103435893A (en) * | 2013-08-28 | 2013-12-11 | 国家电网公司 | Transmission line lead anti-icing compound coil based on ferrite and preparation method thereof |
| CN103435897A (en) * | 2013-09-16 | 2013-12-11 | 黑龙江省润特科技有限公司 | Microwave induced intumescent flame-retardant silane crosslinked polyolefin sheath material for cables and preparation method thereof |
| CN106366419A (en) * | 2016-09-09 | 2017-02-01 | 国网山东省电力公司荣成市供电公司 | XLPE (cross-linked polyethylene) cable insulating material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111103466A (en) * | 2018-10-25 | 2020-05-05 | 耐克森公司 | Cable joint with integrated space charge detector |
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