CN216902358U

CN216902358U - Low-transfer-impedance distortion-resistant wind power generation excitation cable

Info

Publication number: CN216902358U
Application number: CN202123412164.XU
Authority: CN
Inventors: 涂怀俊; 崔学林; 崔洋; 杨鑫; 朱云云
Original assignee: Shanghai Nanyang Fujikura Cable Co ltd
Current assignee: Shanghai Nanyang Fujikura Cable Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-07-05
Anticipated expiration: 2031-12-30

Abstract

The utility model discloses a low transfer impedance and distortion resistance wind power generation excitation cable which comprises four conductors, wherein the outer sides of the four conductors are respectively coated with an insulating layer, the four conductors are twisted into a whole, a temperature sensing cable is arranged in the middle of the conductor, the four conductors and the temperature sensing cable are jointly positioned in an inner sheath, an aluminum foil tape is coated outside the inner sheath, a shielding layer is coated outside the aluminum foil tape, and a first sheath layer is coated outside the shielding layer; the temperature sensing cable comprises four aviation steel wire ropes, the outer sides of the four steel wire ropes are respectively coated with a layer of heat-sensitive insulating layer, and the four steel wire ropes are stranded into a whole and are jointly positioned in the second sheath layer; the low transfer impedance distortion-resistant wind power generation exciting cable overcomes the existing defects, reduces the fault outage rate of a wind generating set, and improves the generating efficiency.

Description

Low-transfer-impedance distortion-resistant wind power generation excitation cable

Technical Field

The utility model relates to a low-transfer-impedance distortion-resistant wind power generation excitation cable.

Background

In recent years, with the promotion of 'carbon neutralization', China advocates to develop clean energy vigorously, and has abundant wind power resources in the open lands of the coastal areas and the northwest areas of China. Wind power cables are also widely used. The existing wind energy cable can meet the power transmission performance, but when the cable is used as an excitation power supply cable, the interference of a frequency converter high-frequency switching pulse parasitized in current to a fan control system exists, the existing advanced solution is to adopt a single shielding type wind energy power cable, although the external interference of the cable can be effectively reduced, particularly the high-frequency anti-interference performance is low, the fan control system still has an unstable fault, and therefore the low transfer impedance distortion-resistant wind energy power generation excitation cable is provided for solving the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art, and provides the low-transfer-impedance distortion-resistant wind power generation exciting cable, so that the fault outage rate of a wind generating set is reduced, and the generating efficiency is improved.

The technical scheme for realizing the purpose is as follows:

a low transfer impedance and distortion resistance wind power generation excitation cable comprises four conductors, wherein the outer sides of the four conductors are respectively coated with an insulating layer, the four conductors are twisted into a whole, a temperature sensing cable is arranged in the middle of the conductor, the four conductors and the temperature sensing cable are jointly positioned in an inner sheath, an aluminum foil tape is coated outside the inner sheath, a shielding layer is coated outside the aluminum foil tape, and a first sheath layer is coated outside the shielding layer;

preferably, the temperature sensing cable comprises four aviation steel wire ropes, the outer sides of the four steel wire ropes are respectively coated with a layer of heat-sensitive insulating layer, and the four steel wire ropes are stranded into a whole and are located inside the second sheath layer.

Preferably, the shielding layer is spiral tough tin-plated copper.

Preferably, the conductor adopts a stranded bundle twisting equidirectional twisting structure.

The utility model has the beneficial effects that: the transfer impedance of the cable can be obviously reduced, the interference of high-frequency pulses in the cable on a control system is greatly reduced, the electromagnetic compatibility of the cable is improved, and the stability of a fan control system is improved; the cable risk is timely and effectively eliminated by timely early warning of the recoverable temperature sensing cable, the fault outage rate of the wind generating set is reduced, and the generating efficiency is improved.

Drawings

FIG. 1 is a schematic view of the present invention;

fig. 2 is an enlarged view at a in fig. 1.

In the figure: 1. a conductor; 2. an insulating layer; 3. a temperature-sensitive cable; 31. an aircraft wire rope; 32. a heat-sensitive insulating layer; 33. a second jacket layer; 4. an inner sheath; 5. an aluminum foil tape; 6. a shielding layer; 7. a first jacket layer.

Detailed Description

The technical scheme of the utility model is clearly and completely described in the following with reference to the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance.

The utility model will be further explained with reference to the drawings.

As shown in fig. 1-2, a low transfer impedance twist-resistant wind power generation excitation cable comprises four conductors 1, wherein the conductors 1 adopt a composite twisted flexible conductor structure, so that the conductors 1 have high flexibility and twist resistance; the outer sides of the four conductors 1 are respectively coated with a layer of insulating layer 2, and the insulating layer 2 is made of high-strength high-temperature-resistant insulating material, so that the current-carrying capacity of the cable is improved; a temperature sensing cable 3 is placed in the gap of the middle of the four conductors 1 which are twisted into a whole, the four conductors 1 and the temperature sensing cable 3 are located in the inner sheath 4 together, the cable can be prevented from keeping an inherent structural state in the twisting process, the conductors 1 adopt a stranded-strand co-directional twisting structure, and the conductor twisting pitch-diameter ratio is not more than 15 times. Outer cladding aluminium foil strip 5 of inner sheath 4, aluminium foil strip 5 can prevent external electromagnetic interference, and have partial reposition of redundant personnel effect, reduce transfer impedance, the outer cladding shielding layer 6 of aluminium foil strip 5, shielding layer 6 has high density and weaves, can avoid the mutual electromagnetic interference between cable inside and external environment, and the tinned copper wire can prevent the copper wire oxidation, the shielded validity has been guaranteed, the first restrictive coating 7 of 6 outside claddings of shielding layer, first restrictive coating 7 adopts the high strength sheath material, anti-cracking and resistant oily characteristic have. The interference of external severe conditions can be resisted; the temperature sensing cable 3 comprises four aviation steel wire ropes 31, the outer sides of the four steel wire ropes 31 are respectively coated with a layer of heat-sensitive insulating layer 32, and the four steel wire ropes 31 are twisted into a whole and are jointly positioned in the second sheath layer 33, so that the transfer impedance of the cable can be obviously reduced, the interference of high-frequency pulses in the cable on a control system is greatly reduced, the electromagnetic compatibility of the cable is improved, and the stability of a fan control system is improved; the cable risk is timely and effectively eliminated by timely early warning of the recoverable temperature sensing cable, the fault outage rate of the wind generating set is reduced, and the generating efficiency is improved.

The working principle is as follows: four 1 outsides of conductor respectively cladding one deck insulating layer 2, a temperature sensing cable 3 is placed to four 1 twists into integrative middle part clearances of conductor, four 1 and a temperature sensing cable 3 are located inner sheath 4 jointly, can prevent that the cable from keeping the inherent structural state at the in-process that twists reverse, inner sheath 4 outsides cladding aluminium foil tape 5, can prevent external electromagnetic interference, and have partial shunting, reduce transfer impedance, the outsourcing of aluminium foil tape 5 covers shielding layer 6, shielding layer 6 is spiral toughness tinned copper, it weaves to have high density, can avoid the mutual electromagnetic interference between the cable is inside and external environment, and tinned copper wire can prevent the copper wire oxidation, shielded validity has been guaranteed, shielding layer 6 outsides cladding first restrictive coating 7, first restrictive coating 7 adopts high strength sheath material, have anti-cracking and resistant oily characteristic. The interference of external severe conditions can be resisted; the temperature sensing cable 3 comprises four aviation steel wire ropes 31, the outer sides of the four steel wire ropes 31 are respectively coated with a layer of heat-sensitive insulating layer 32, and the four steel wire ropes 31 are twisted into a whole and are jointly positioned in the second sheath layer 33, so that the transfer impedance of the cable can be obviously reduced, the interference of high-frequency pulses in the cable on a control system is greatly reduced, the electromagnetic compatibility of the cable is improved, and the stability of a fan control system is improved; the cable risk is timely and effectively eliminated by timely early warning of the recoverable temperature sensing cable, the fault outage rate of the wind generating set is reduced, and the generating efficiency is improved.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a low transfer impedance resistant warp wind power generation exciting cable, its characterized in that includes four conductors (1), four the conductor (1) outside is cladding one deck insulating layer (2) respectively, four a temperature sensing cable (3), four are placed to conductor (1) stranding integrative middle part clearance temperature sensing cable (3) are four conductor (1) and one temperature sensing cable (3) are located inner sheath (4) jointly, outer cladding aluminium foil area (5) of inner sheath (4), outer cladding shielding layer (6) of aluminium foil area (5), shielding layer (6) outside cladding first restrictive coating (7).

2. The low transfer impedance and twist-resistant wind power generation excitation cable according to claim 1, wherein the temperature sensing cable (3) comprises four aviation steel wire ropes (31), a layer of heat-sensitive insulating layer (32) is respectively coated on the outer sides of the four aviation steel wire ropes (31), and the four aviation steel wire ropes (31) are twisted into a whole and are jointly located in the second sheath layer (33).

3. The low transfer impedance twist-resistant wind power generation excitation cable according to claim 1, wherein said shielding layer (6) is a spiral type tough tin-plated copper.

4. The low transfer impedance twist-resistant wind power generation excitation cable according to claim 1, wherein the conductor (1) adopts a stranded bundle twisting same-direction twisting structure.