TWM448777U - Structure for 66kv~400kv up-rating conductors power cable - Google Patents

Description

Structure for 66kV~400kV Compatibilized Conductor Power Cable

The present invention relates to a structure for a 66 kV to 400 kV compatibilized conductor power cable, and more particularly to a cable construction in which an inner core of each conductor is covered with an insulator to reduce the skin effect and the proximity effect of the cable.

At present, the basic composition of a conventional electric wire or cable wire, such as a wire or cable, mainly includes a set of metal conductors, and at least one insulating layer is coated on the outer side of the set of metal conductors, thereby using the insulating layer to avoid electric shock by mistakes. At present, when a conventional electric wire or cable wire transmits current, the current distribution inside the conductor is uneven, and as the distance from the conductor surface gradually increases, the current density in the conductor decreases exponentially, and the current in the conductor concentrates on the conductor. The surface, that is, the copper wire on the surface of the conductor, produces a conductive effect, and the conductive effect of the middle copper wire is relatively small, which is the skin effect.

According to the present prior art, as shown in the first figure, reference is made to the following Patent Publication No. M426854 "Torque-Resistant Shielded Cable" patent published by the Republic of China, which discloses a torsion-resistant shielded cable (100) comprising: at least one conductor (101); an insulating layer (102) covering the conductor (101); a first isolation layer (103) surrounding the insulating layer (102); and a shielding layer (104) comprising a plurality of layers The shielding wire is a single wire or a stranded wire, and the shielding wire is alternately wrapped around the first isolation layer (103) in a clockwise direction and a counterclockwise direction; in the case of conducting current, the above-mentioned skin effect is still disadvantageous. The current in the conductor (101) is concentrated on the surface of the conductor (101), so that the efficiency of current transmission is poor, and the conventional cable construction has the following two methods in order to reduce the skin effect and the proximity effect:

1. The insulating material (106) is used to divide the conventional conductor (105) to reduce the skin effect (as shown in the second figure).

2. Expand the cross-sectional area of the conventional conductor (105) to increase the current through the surface of the conventional conductor (105).

Referring to the second and third figures, there are currently known methods for solving the skin effect and the proximity effect, as well as room for improvement:

1. Although the insulating material (106) is used to divide the conventional conductor (105), the copper wire and the outer copper wire (107) attached to the surface of the insulating material (106) can transmit more current, but the inner copper wire (108) The current passed is limited.

2. Expanding the cross-sectional area of the conventional conductor (105) will make the volume of the overall cable line larger, which is liable to cause inconvenience in construction and increase in cost.

Therefore, the creator is committed to research and then create a structure for a 66kV~400kV compatibilized conductor power cable, which includes:

a conductor layer comprising a plurality of fan-shaped conductors, wherein the fan-shaped conductor comprises a plurality of inner core wires and a plurality of outer core wires, and the inner core wire is coated with an insulator;

An insulating layer is coated on the outside of the conductor layer.

Among them, the insulating system of the present invention is a rolling resistant insulating material, and the above-mentioned rolling resistant insulating material is a polyvinyl chloride, polyethylene, polyethylene terephthalate, nylon or paint film.

The cable structure of the present invention further comprises an inner semi-conductive layer between the conductor layer and the insulating layer, and the outer layer of the insulating layer is sequentially coated with an outer semi-conductive layer, a semi-conductive water stop layer and a shielding copper layer. , a coating layer, a PVC anti-corrosion coating layer.

The advantages of this creation:

1. Since the inner core wire is covered by the insulator, the inner core wire can transmit electricity in the AC system, and the outer core wire and the inner core wire can transmit electricity. The effect and the proximity effect avoid the loss of current and promote the electrical transmission capacity under the same conductor layer cross-sectional area.

2. The cable construction of the present invention enables a cable having the same cross-sectional area to have a larger transmission capacity, so that the inconvenience of construction is not required without enlarging the cross-sectional area of the conductor, and the manufacturing cost of the cable can be further reduced.

For the creation, please refer to the fourth picture, the fifth picture A, the fifth B picture and the fifth C picture. This creation is a structure for the 66kV~400kV capacity-enhanced conductor power cable, including:

A conductor layer (1) is divided into a plurality of sector conductors (12) by an insulating material (11), and the sector conductors (12) are internally provided with a plurality of inner core wires (13) and a plurality of outer core wires (14) The inner core wire (13) is coated with an insulator (131), and the material of the insulator (131) is a calender resistant insulating material such as polyvinyl chloride, polyethylene, polyethylene terephthalate, One of nylon or paint film, this embodiment uses a paint film as an insulator (131).

An inner semiconducting layer (2) is disposed on the outer side of the conductor layer (1).

An insulating layer (3) is coated on the outer side of the conductor layer (1).

An outer semiconductive layer (4) is coated on the outside of the insulating layer (3).

A semi-conductive water stop layer (5) is wrapped around the outer semiconductive layer (4).

A masking copper wire layer (6) is wrapped on the outside of the semiconductive water stop layer (5).

A coating layer (7) is coated on the outside of the shielding copper wire layer (6).

A PVC anti-corrosion coating layer (8) is coated on the outside of the coating layer (7).

In the implementation of the present invention, such as the fourth figure, the fifth A picture, the fifth B picture and the fifth C picture, the fan-shaped conductor (12) of the present invention comprises about 61 inner core wires (13), and the insulator (131) is covered. When the inner core wire (13) is passed through the inner core wire (13), since the inner core wire (13) is covered by the insulator (131), the inner core wire (13) can transmit electric power per second, so that the plurality of shares are When the inner core wire (13) has a current passing through, and the plurality of outer core wires (14) and the plurality of inner core wires (13) can transmit electricity, the alternating current resistance of the conductor layer (1) is lowered, and thus the same conductor The cross-sectional area of the layer (1) can have a large electric transmission amount, and at the same time, the current loss of the skin effect and the proximity effect is greatly reduced, thereby increasing the transmission capacity, so that the cross-sectional area of the conductor layer (1) can be enlarged without causing construction. The inconvenience can also reduce the manufacturing cost of the cable.

In addition, referring to the second and third figures, the current of the conventional conductor (105) is unevenly distributed compared to the conventional cable structure of the uncovered insulator on each copper wire, that is, the proximity effect occurs, and the cable is made. The conventional conductor (105) of the line has an increased AC resistance, affecting the amount of current transmission, and a skin effect due to eddy current loss. Therefore, only the outer copper wire (107) in the sector conductor (109) has a large current. While the inner copper wire (108) has a small current, the amount of capacitance is concentrated on the outer copper wire (107) of the sector conductor (109), resulting in poor transmission efficiency.

Referring to the sixth figure, the bar graph of the alternating current resistance of the conductor layer [enlargement conductor] of the present invention and the conventional conductor layer is reduced. The AC resistance of the compatibilized conductor of the present invention is reduced by the same cross-sectional area of 2000 mm ² . twenty.

Referring to the seventh figure, the transmission capacity of the conductor layer [enhanced conductor] and the conventional conductor layer of the present invention is compared with the conventional cross-sectional area of 2000 mm ² , since the AC resistance of the compatibilized conductor is reduced by 20%, The conductor layer of the present invention [enhanced conductor] has an electric power supply amount of 11% larger than that of the conventional conductor layer.

In view of the above description of the embodiments, the above-described embodiments are merely a preferred embodiment of the present invention, and the implementation of the present invention is not limited thereto. The scope, that is, the simple equivalent changes and modifications made in accordance with the scope of the patent application and the content of the creation of the creation, are within the scope of this creation.

Prior art (100) ‧ ‧ Torsion-resistant shielded cable (101) ‧ ‧ Conductor (102) ‧ ‧ Insulation (103) ‧ ‧ First barrier (104) ‧ ‧ Shield (105) ‧ ‧Traditional conductors (106)‧‧‧Insulating materials (107)‧‧‧External copper wire (108)‧‧‧ Inner copper wire (109)‧‧‧ Sector conductors (1)‧‧‧ conductor layer (11 )‧‧‧Insulation material (12)‧‧‧ Sector conductor (13)‧‧‧ Inner core wire (131)‧‧‧Insert (14)‧‧‧ outer core wire (2)‧‧‧ inner semiconducting layer (3 ‧‧‧Insulation (4)‧‧‧External semiconducting layer (5)‧‧‧ semi-conductive waterstop layer (6)‧‧‧Shielding copper layer (7)‧‧‧ Covering layer (8)‧ ‧‧PVC anti-corrosion coating

The first figure is a construction diagram of the prior art.

The second figure is a schematic diagram of the conventional skin effect of the conventional conventional conductor.

The third figure is a partial enlarged view of the conventional skin effect of the conventional conventional conductor.

The fourth picture is the plane structure diagram of the creation.

The fifth A picture is a partial enlarged view of the creation.

The fifth B diagram is another partial enlarged view of the creation.

The fifth C picture is another partial enlarged view of the creation.

The sixth picture is a schematic diagram of the AC resistance of the compatibilized conductor of this creation.

The seventh picture is a schematic diagram of the power transmission capacity of the compatibilized conductor of this creation.

(1) ‧‧‧ conductor layer

(11)‧‧‧Insulation materials

(12)‧‧‧ Sector conductors

(2) ‧‧‧ inner semiconducting layer

(3) ‧‧‧Insulation

(4) ‧‧‧ outer semi-conductive layer

(5) ‧‧‧ semi-conductive waterstop layer

(6) ‧‧‧Shielding copper layer

(7) ‧ ‧ coating

(8)‧‧‧PVC anti-corrosion coating

Claims (4)

A structure for a 66 kV to 400 kV compatibilized conductor power cable, comprising:
a conductor layer comprising a plurality of fan-shaped conductors, wherein the fan-shaped conductor comprises a plurality of inner core wires and a plurality of outer core wires, and the inner core wire is coated with an insulator;
An insulating layer is coated on the outside of the conductor layer. The structure for a 66 kV to 400 kV compensating conductor power cable according to claim 1, wherein the insulating system is a rolling resistant insulating material. The structure for a 66 kV to 400 kV compensating conductor power cable according to claim 2, wherein the anti-calender insulating material is polyvinyl chloride, polyethylene, polyethylene terephthalate, nylon. Or the top of the film. The structure for the 66 kV to 400 kV compatibilized conductor power cable according to claim 1 is further provided with an inner semi-conductive layer between the conductor layer and the insulating layer, and the outer layer of the insulating layer is sequentially coated. The utility model has an outer semi-conductive layer, a semi-conductive water-stopping layer, a shielding copper wire layer, a coating layer and a PVC anti-corrosion coating layer.