CN213459201U - 330kV temperature measurement crosslinked power cable - Google Patents

Abstract

The utility model relates to a power cable technical field, in particular to 330kV temperature measurement crosslinked power cable, including the copper conductor, the copper conductor twines outward and establishes the semiconduction band, and the layer is crowded altogether to the three-layer of the outer crowded covering of conductor shielding, insulating layer and insulation shield layer of peripheral hardware again, and the semiconduction buffer layer that blocks water of peripheral hardware again vertically sets up 2-4 temperature measurement optical cables along the cable on the semiconduction buffer layer surface that blocks water, sets up metallic sheath nonmetal sheath and outer semi-conducting layer outward. This power cable can carry out real-time supervision function to the cable in the use to judge the circuit load according to the actual running state of cable and utilize the level, make the problem of reasonable adjustment. The temperature distribution condition of the cable line is monitored in real time, whether the state of the cable line is healthy or not is judged according to the temperature distribution condition, and the current load level can be judged according to the temperature level of the line to guide the load adjustment of the line.

Description

330kV temperature measurement crosslinked power cable

Technical Field

The utility model relates to a power cable technical field, in particular to 330kV temperature measurement crosslinked power cable.

Background

The safe and reliable operation of the ultrahigh voltage power cable is important in the field of power transmission all the time, and especially, the ultrahigh voltage crosslinked power cable line with the voltage level of 330kV or above generates huge economic loss and negative social effect once a sudden power failure accident occurs in the operation.

The conventional 330kV and above crosslinked power cable usually adopts a regular maintenance system in the use process, and cannot find the potential safety hazard of the line and timely process the potential safety hazard of the line at the first time.

The operation state of the line cannot be observed on line in the use process to achieve the function of real-time monitoring, and the line load cannot be reasonably adjusted according to the self condition of the line, so that the load capacity of the cable line can only be conservatively applied in the use process, the occurrence of the operation fault of the 330kV cable line cannot be predicted, and the line fault cannot be preventively diagnosed.

In order to solve the above problems, it is necessary to develop a crosslinked power cable for ultra-high voltage of 330kV and above.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a 330kV temperature measurement crosslinked power cable. The ultrahigh voltage crosslinked power cable solves the problems that the traditional ultrahigh voltage crosslinked power cable with the voltage of 330kV or above does not have a real-time monitoring function in the using process, cannot judge the line load utilization level according to the actual running state of the cable, and cannot be reasonably adjusted. Through the power cable scheme of this application for 330kV and above temperature measurement crosslinked cable can effectual solution these practical problems. The crosslinked power cable can monitor the temperature distribution condition of the cable line in real time in the operation process of the cable line, judge whether the state of the cable line is healthy or not according to the temperature distribution condition, judge the current load level according to the temperature level of the line and guide the adjustment of the load of the line.

The utility model provides a technical scheme that its technical problem adopted is: a330 kV temperature measurement cross-linked power cable comprises a copper conductor, wherein a semi-conductive wrapping tape is wound outside the copper conductor, a conductor shielding extrusion layer, a three-layer co-extrusion layer of an insulating layer and an insulating shielding layer are arranged outside the copper conductor, a semi-conductive water-blocking buffer layer is arranged outside the copper conductor, 2-4 temperature measurement optical cables are arranged on the surface of the semi-conductive water-blocking buffer layer along the longitudinal direction of the cable, and a metal sheath non-metal sheath and an outer semi-conductive layer are.

Preferably, 1-2 optical fibers are arranged in each temperature measuring optical cable.

Preferably, the temperature measuring optical cables are uniformly distributed.

Preferably, the temperature measuring optical cable has 8% -12% of the extra length compared with the length of the cable.

Preferably, the temperature measuring optical cable is spirally wound.

Preferably, an asphalt anti-corrosion layer is arranged between the metal sheath and the non-metal sheath.

Preferably, the copper conductor is a four-segment conductor or a five-segment conductor.

Preferably, the semiconductive water-blocking buffer has 4-6 layers.

Preferably, the metal sheath is a corrugated aluminum sheath.

Preferably, the temperature measuring optical cable comprises a temperature measuring optical fiber, a stainless steel hose is arranged outside the temperature measuring optical fiber, the outer layer is Kevlar, a stainless steel woven net is arranged outside the temperature measuring optical fiber, and a PE coating is arranged on the outermost layer.

The utility model has the advantages that: the cable can be monitored in real time in the using process, so that the line load utilization level is judged according to the actual running state of the cable, and reasonable adjustment is made. The temperature distribution condition of the cable line is monitored in real time, whether the state of the cable line is healthy or not is judged according to the temperature distribution condition, and the current load level can be judged according to the temperature level of the line to guide the load adjustment of the line.

Drawings

Fig. 1 shows a schematic structural diagram of the present invention.

Fig. 2 shows a schematic structural diagram of the copper conductor of the present invention.

Fig. 3 is a schematic diagram of a part of the structure of the present invention.

Fig. 4 shows a schematic structural diagram of the temperature measuring optical cable of the present invention.

In the figure: 1 copper conductor, 2 semi-conductive band, 3 conductor shielding crowded covering, 4 insulating layers, 5 insulating shield layers, 6 semi-conductive buffer layer that blocks water, 7 temperature measurement optical cables, 8 metal sheath, 9 non-metal sheath, 10 outer semi-conductive layers, 11 pitch anticorrosive coating, 12 temperature measurement optic fibre, 13 stainless steel hose, 14kevlar layer, 15 stainless steel woven mesh, 16PE coats.

Detailed Description

Further refinements will now be made on the basis of the representative embodiment shown in the figures. It should be understood that the following description is not intended to limit the embodiments to one preferred embodiment. On the contrary, it is intended to cover alternatives, modifications, and equivalents as may be included within the spirit and scope of the embodiments as defined by the appended claims.

Specifically, referring to fig. 1 and 2, fig. 1 and 2 show a 330kV thermometric crosslinking power cable comprising a copper conductor 1, the copper conductor 1 being a four-split conductor or a five-split conductor, in this example, a five-split conductor; a semi-conductive wrapping tape 2 is wound outside a copper conductor 1, then a three-layer co-extrusion layer consisting of a conductor shielding extrusion layer 3, an insulating layer 4 and an insulating shielding layer 5 is arranged on the outer layer, and a semi-conductive water-blocking buffer layer 6 is arranged on the outer layer and provided with 4-6 layers. 2-4 temperature measuring optical cables 7 are arranged on the surface of the semi-conductive water-blocking buffer layer 6 along the longitudinal direction of the cable, and 1-2 temperature measuring optical fibers 12 are arranged in each temperature measuring optical cable 7; a non-metal sheath 9 and an outer semi-conducting layer 10 of a metal sheath 8 are arranged outside, the temperature measuring optical fiber 12 is coated by the metal sheath 8, and the metal sheath 8 is a corrugated aluminum sheath. The corrugated aluminum sheath can play a good role in protecting the temperature measuring optical cable 7.

The temperature measurement optical cables 7 arranged outside the semi-conductive water-blocking buffer layer 6 are ensured to be uniformly distributed, so that the detection can be carried out on the cables in all directions, and meanwhile, the temperature measurement optical cables 7 have 8% -12% of extra length compared with the length of the cables, so that the temperature measurement optical cables 7 in the cables are ensured to have enough length to stretch along with the extra length when the whole cables are bent; in order to better match with the temperature measurement optical cable 7 with a certain extra length, the temperature measurement optical cable 7 is spirally wound. Certainly, the attenuation index of the temperature measuring optical cable 7 needs to be ensured in the production process.

In the power cable, the asphalt anticorrosive layer 11 is provided between the metal sheath 8 and the non-metal sheath 9. Further improving the corrosion resistance of the power cable.

Regarding the structure of the temperature measuring optical cable 7, the temperature measuring optical cable 7 comprises 1-2 temperature measuring optical fibers 12, a stainless steel hose 13 is arranged outside the temperature measuring optical fibers 12, then a kevlar layer 14 is arranged outside the temperature measuring optical fibers 12, a stainless steel woven mesh 15 is arranged outside the temperature measuring optical fibers, and a PE coating 16 is arranged on the outermost layer of the temperature measuring optical fibers. Thereby forming a cable having a strength that prevents the cable from losing its function during manufacture, transport and use of the power cable.

Based on the current traditional 330kV crosslinked power cable, the cable does not have a real-time monitoring function in the use process, can not judge the line load utilization level according to the actual running state of the cable, can not make reasonable adjustment, and can not make preventive diagnosis on line faults. The above power cable is well able to solve these problems.

Compare with traditional 330kV crosslinked power cable, this application structure production technology, the manufacturing technology is realized more easily, and the implantation of temperature measurement optical cable 7 makes 330kV crosslinked power cable possess online temperature measurement function to make cable run, through cable run temperature distribution, know circuit running state and circuit load condition in real time at the operation in-process. And the safe operation evaluation and the load adjustment can be carried out on the line according to the operation state and the load condition, so that the load capacity of the line is reasonably and effectively used on the premise of ensuring the safe operation of the line. When the cable line has the problems of external factor damage, system aging and the like, the temperature is abnormally increased at the fault position, the problem can be found in time through the temperature measuring optical cable 7, and the occurrence of serious power failure accidents is avoided.

For purposes of explanation, specific nomenclature is used in the above description to provide a thorough understanding of the described embodiments. It will be apparent, however, to one skilled in the art that these specific details are not required in order to practice the embodiments described above. Thus, the foregoing descriptions of specific embodiments described herein are presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the embodiments to the precise form disclosed. It will be apparent to those skilled in the art that certain modifications, combinations, and variations can be made in light of the above teachings.

Claims (10)

1. The utility model provides a 330kV temperature measurement crosslinked power cable which characterized in that: the cable comprises a copper conductor, a semiconductive wrapping tape is wound outside the copper conductor, a three-layer co-extrusion layer of a conductor shielding extrusion layer, an insulating layer and an insulating shielding layer is arranged outside the copper conductor, a semiconductive water-blocking buffer layer is arranged outside the copper conductor, 2-4 temperature-measuring optical cables are longitudinally arranged on the surface of the semiconductive water-blocking buffer layer along the cable, and a metal sheath, a nonmetal sheath and an outer semiconductive layer are arranged outside the semiconductive layer.

2. The 330kV temperature-measuring cross-linked power cable of claim 1, wherein: each temperature measuring optical cable is internally provided with 1-2 temperature measuring optical fibers.

3. The 330kV temperature-measuring cross-linked power cable of claim 1, wherein: the temperature measuring optical cables are uniformly distributed.

4. The 330kV temperature-measuring cross-linked power cable of claim 1, wherein: compared with the cable length, the temperature measuring optical cable has 8% -12% of extra length.

5. The 330kV temperature-measuring cross-linked power cable of claim 1, wherein: the temperature measuring optical cable is spirally wound.

6. The 330kV temperature-measuring cross-linked power cable of claim 1, wherein: an asphalt anticorrosive layer is arranged between the metal sheath and the nonmetal sheath.

7. The 330kV temperature-measuring cross-linked power cable of claim 1, wherein: the copper conductor is a four-division conductor or a five-division conductor.

8. The 330kV temperature-measuring cross-linked power cable of claim 1, wherein: the semi-conductive water-blocking buffer belt has 4-6 layers.

9. The 330kV temperature-measuring cross-linked power cable of claim 1, wherein: the metal sheath is a corrugated aluminum sheath.

10. The 330kV temperature-measuring cross-linked power cable of claim 1, wherein: the temperature measurement optical cable comprises temperature measurement optical fibers, wherein stainless steel hoses are arranged outside the temperature measurement optical fibers, a Kevlar layer is arranged outside the temperature measurement optical fibers, a stainless steel woven net is arranged outside the temperature measurement optical fibers, and a PE coating is arranged on the outermost layer of the temperature measurement optical fibers.

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