Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A ±535kv ultra-high voltage flexible DC insulated power cable

A flexible DC and power cable technology, applied in the direction of insulated cables, power cables with shielding/conductive layers, insulators, etc., can solve the problems of increasing the weight of cables, difficult to remove cross-linked by-products, and difficult to recycle and reuse. Achieve the effect of reducing the number of shutdowns for cleaning, continuous production without joints, and reducing the overall consumption of raw materials

Active Publication Date: 2022-02-15
宁波东方电缆股份有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, cross-linked polyethylene is a thermosetting material, which cannot be recycled and reused after the service life expires and is difficult to degrade. The cross-linked by-products are not easy to remove, and it is difficult to control the purity of cables. Large space, high energy consumption and low efficiency
In addition, cross-linked polyethylene is thermosetting, and it is difficult to recycle and reuse cables after they reach the end of their service life. They can only be incinerated or landfilled. The pressure on environmental protection is huge and it is easy to cause environmental pollution.
The traditional cross-linked polyethylene insulation poses a great threat to energy waste and environmental pollution because it cannot be recycled and reused. It does not conform to the current international concept of sustainable development of resource applications. 0.94g / cm3 virtually increases the weight of the cable, which brings great inconvenience to construction and transportation; Extensive opportunities for development

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A ±535kv ultra-high voltage flexible DC insulated power cable
  • A ±535kv ultra-high voltage flexible DC insulated power cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment one: if figure 1 As shown, a ±535kV ultra-high voltage flexible direct current lightweight polypropylene insulated power cable includes a direct current unit, a semiconductive resistance water layer 1 is arranged outside the direct current unit, a metal armor layer 2 is arranged outside the semiconductive resistance water layer 1, and a metal armor layer 2 is arranged outside the semiconductive resistance water layer 1. The armor layer 2 is provided with an anti-corrosion layer 3, the anti-corrosion layer 3 is provided with an outer sheath 4, the outer sheath 4 is provided with a semi-conductive layer 5, and the DC unit includes a water-blocking conductor layer 6, which is sequentially arranged from the inside to the outside. The material of the semi-conductive Tedron tape 7, the inner shielding layer 8, the insulating layer 9 and the insulating shielding layer 10 is modified polypropylene, and the material of the inner shielding layer 8 and the insulating shi...

Embodiment 2

[0025] Embodiment two: other is identical with embodiment one, and its difference is:

[0026] In this specific example, the modified polypropylene (OCPP) is made of the following raw materials in parts by mass: polypropylene 85, nanometer organically modified montmorillonite 1.2, calcium hardate 13, acetophenone (AP) 0.5, Sodium hydroxymethyl cellulose 12, rutile nano silica 0.9, wood fiber 1.1, shrinkage uniform additive 0.4, synergistic antioxidant 0.3, nano reinforcement 1.0.

[0027] In this specific example, the synergistic antioxidant includes a primary antioxidant and an auxiliary antioxidant, the primary antioxidant is 4,4'-thiobis(6-tert-butyl-3-methylphenol), and the auxiliary The antioxidants are tris[2.4-di-tert-butylphenyl]phosphite and dolin aromatics, and the weight ratio of the main antioxidant to the auxiliary antioxidant is 1:0.6.

[0028] In this specific example, the nano-reinforcing agent is polyhedral oligomeric silsesquioxane (POSS) with a particle siz...

Embodiment 3

[0030] Embodiment three: other is the same as embodiment one, and its difference is: polypropylene is made of the raw material of following mass parts: polypropylene 105, nano organically modified montmorillonite 1.5, calcium hardate 15, acetophenone 0.8, hydroxymethylcellulose sodium 16, rutile nano-silica 1.0, wood fiber 1.2, shrinkage uniform additive 0.6, synergistic antioxidant 0.5, nano-reinforcing agent 1.2.

[0031] In this specific example, the synergistic antioxidant includes a primary antioxidant and an auxiliary antioxidant, the primary antioxidant is 4,4'-thiobis(6-tert-butyl-3-methylphenol), and the auxiliary Antioxidant is three [2.4-di-tert-butylphenyl] phosphite, dolin arene, and the weight ratio of main antioxidant and auxiliary antioxidant is 1: 1.1.

[0032] In this specific example, the nano-reinforcing agent is polyhedral oligomeric silsesquioxane (POSS) with a particle size of 1.6 nm.

[0033] In this specific embodiment, the uniform shrinkage additive ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a ±535kV ultra-high voltage flexible DC light-duty polypropylene insulated power cable. A semiconductive resistance water layer is arranged outside the DC unit, a metal armor layer is arranged outside the semiconductive resistance water layer, and a metal armor layer is arranged outside the metal armor layer. Anti-corrosion layer, an outer protective layer is arranged outside the anti-corrosion layer, and a semi-conductive layer is arranged outside the outer protective layer. The DC unit includes a water-blocking conductor layer, a semi-conductive teflon tape, an inner shielding layer, and an insulating layer arranged in sequence from the inside to the outside. And the insulation shielding layer, the insulation layer is modified polypropylene, the material of the inner shielding layer and the insulation shielding layer is DC shielding material; its advantage is that it is 26% lighter than the XLPE power cable, and the long-term working temperature is not lower than 110°C. Ordinary plastic extrusion molding, the extrusion line speed is faster, no scorch occurs, continuous production can be achieved, large length, continuous production without joints, high production efficiency, simple process; better mechanical properties, electrical performance and dielectric strength.

Description

technical field [0001] The invention relates to a power cable, in particular to a ±535kV ultra-high voltage flexible DC insulated power cable. Background technique [0002] As the country continues to strengthen the grid-connected integration in the field of smart grid construction, ultra-high voltage flexible DC power cables have ushered in broad market opportunities. Flexible DC transmission technology has strong technical advantages for improving the dynamic stability of the AC system, increasing the dynamic reactive power reserve of the system, improving the power quality of the AC system, and solving the problems caused by nonlinear loads and impact loads. It is also an important technical means to solve large-capacity, long-distance, intermittent new energy generation grid connection in the construction of smart grid. [0003] The cable insulation materials currently in use generally use polyethylene resin as the matrix material, and the working temperature is usually...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H01B3/44H01B7/02H01B7/18H01B7/28H01B9/02
CPCH01B3/441H01B7/02H01B7/2806H01B7/18H01B9/02
Inventor 夏峰刘凤伟陈磊张永明潘矗直钟宁涛陈盖杰王璐韩哲
Owner 宁波东方电缆股份有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com