KR20130046893A - Method for connecting power system using underwater transmission tower structure - Google Patents

Abstract

PURPOSE: A power system connecting method is provided to install underwater transmission towers floated on a water surface at regular intervals and to install a power cable in water using an underwater transmission tower structure. CONSTITUTION: A power system connecting method using an underwater transmission tower structure includes following steps. A power cable(100) is buried in from a first ground point(a) to a first coastal water point(b). Underwater transmission towers(200) are floated at regular intervals from the first coastal water point to a second coastal water point(c). The power cable is connected from the first coastal water point to the second coastal water point via the underwater transmission towers. The power cable is buried in from the second coastal water point to a second ground point(d). [Reference numerals] (400,500) Substation; (AA) Coastal water; (BB) Deep water

Description

{Method for Connecting Power System using Underwater Transmission Tower Structure}

The present invention relates to a power system linkage method using a deep sea underwater tower.

In order to link two or more electric power systems over the sea, conventionally, a method of constructing an overhead line using an offshore steel tower or using a submarine cable is mainly used.

1 is a schematic diagram showing a linkage method using a conventional processing line using an offshore steel tower. As shown in FIG. 1, a method of constructing a processing line using an offshore pylon includes constructing a plurality of foundation structures 10 and a pylon structure 20 at sea, and the overhead power line 30 between the pylon structures 20. ) To build a machining line. In the case of this linkage method, construction is possible only at shallow depths of several meters to several tens of meters, and it is not applicable to deep waters of more than hundreds to thousands of kilometers. In addition, it is also one of the problems to install a base structure on the sea and very expensive to install a steel tower structure thereon.

Figure 2 is a schematic diagram showing a connection method using a conventional submarine cable embedding method. As shown in FIG. 2, the substation or conversion station 50, 60 to be connected with the sea therebetween is installed by the submarine cable 70. This method of connection using submarine cable laying is not applicable in deep seas with depths of more than hundreds to thousands of kilometers, and there is a problem that construction costs and construction periods increase exponentially when constructing in seas with depths of 100 m or more. In addition, in terms of maintenance of the equipment, this method is impossible to monitor the exact failure point at the time of the monitoring and failure of the equipment at all times, and the time and cost required for the troubleshooting are greatly generated.

In this regard, Korean Patent No. 0394559 discloses a "sea floating structure". The invention of Korean Patent No. 0394559 describes a marine floating structure that can more strongly connect a plurality of floating bodies constituting the floating structure to improve the overall strength of the floating structure.

Korean Registered Patent No. 0394559, "Marine Floating Structure"

In order to solve the above-mentioned problems of the prior art, the present invention provides a method for installing an underwater steel tower that can be floated on the surface at regular intervals and using the same to install a power cable in the water.

The objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood from the following description.

In order to achieve the above object, the power system connection method using an underwater steel tower according to an aspect of the present invention, the step of embedding a power cable from the first point of the ground to the water within a certain depth, the point where the power cable is embedded Floating one or more underwater pylons at a predetermined interval to the water within a predetermined depth of the second point on the ground, and via the underwater tower from the point where the power cable is buried to the water within a predetermined depth of the second point. Connecting the power cable and embedding the power cable from the water within a predetermined depth of the second point to the second point.

Here, the power cable may have a characteristic of neutral buoyancy.

Here, the underwater tower may include one or more buoyancy control device for maintaining buoyancy.

Here, the power cable may be connected to a lower surface of the upper deck of the underwater steel tower and may be turned over to a connection device mounted on the upper surface of the upper deck.

Here, the underwater tower or the power cable may be fixed by one or more position fixing wire.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG.

The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. It is provided to fully inform the owner of the scope of the invention.

According to one of the problem solving means of the power system connection method using the underwater pylon of the present invention described above, it is possible to install the power cable in the water by using the underwater pylon that can float on the water surface.

1 is a schematic diagram showing a linkage method using a conventional processing line using an offshore steel tower.
Figure 2 is a schematic diagram showing a connection method using a conventional submarine cable embedding method.
3 is a schematic diagram showing a power system linkage method using an underwater pylon according to an embodiment of the present invention.
4 is a detailed configuration diagram of an underwater pylon according to an embodiment of the present invention.

The present invention may be variously modified and have various embodiments, and specific embodiments will be illustrated in the drawings and described in detail with reference to the accompanying drawings.

It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

In addition, when a part is said to "include" a certain component, it means that it may further include other components, except to exclude other components unless specifically stated otherwise.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 is a schematic diagram showing a power system linkage method using an underwater pylon according to an embodiment of the present invention.

As shown in FIG. 3, the power system linking method according to an embodiment of the present invention uses an underwater pylon 200 to link two or more power systems or power generation systems to the sea. The cable 100 is sequentially connected underwater.

To this end, the offshore power cable 100 is embedded using a conventional submarine cable laying method, and in the deep sea, the power cable 100 is connected underwater using the underwater pylon 200 floating on the sea.

Specifically, in FIG. 3, for the section from the substation 400 on the ground to the point B of the offshore where the water depth is below a certain level, the power cable 100 is buried by using the existing submarine cable embedding method, and the ship or other causes. Prevent damage of the power cable 100 by the.

Similarly, the power cable 100 is buried using the existing submarine cable embedding method for the section from the substation 500 on the other side to the point C of the offshore where the water depth is below a certain level.

On the other hand, the section from point B to point C may be a section corresponding to the deep sea, in this case it is difficult to connect the power cable 100 by a conventional submarine cable embedding method. Therefore, to overcome this, first, the underwater pylon 200 is positioned to be floating on the water surface at a predetermined distance interval from the point B to the C point. At this time, the one or more fixing wire 300 is fixed to the seabed so that the underwater steel tower 200 or the underwater power cable 100 floating on the water surface is not moved by currents or waves. The power cable 100 may be fixed.

The power cable 100 is connected between the underwater steel towers 200 installed at regular intervals. At this time, the power cable 100 is connected to the water instead of being connected to the ground. In addition, the power cable 100 connecting the underwater pylon 200 is installed to have a deep enough ear canal (ip) to prevent damage to the vessel or other causes.

At this time, the power cable 100 connected underwater is preferably made of a material having the characteristics of the neutral buoyancy. Through this, it is possible to minimize the size of the underwater pylon 200 to support the weight of the power cable 100 and to maximize the distance between the underwater pylon 200. Alternatively, by connecting an object having buoyancy to the power cable 100, the power applied to the underwater tower 200 may be reduced.

Underwater pylon 200 maintains a buoyancy sufficient to support the weight of the power cable 100 and other equipment.

Looking at the configuration of the underwater tower with reference to Figure 4, first, the underwater tower 200 includes an upper deck 210 and a cable connection device 220 is installed on the upper deck (210). In addition, at least one buoyancy control device 230 is formed at an upper portion of the upper deck 210, and an inlet space through which the power cable 100 is drawn from the water is formed at the lower portion thereof.

The two power cables 100 introduced into the inlet space from two adjacent underwater pylons are electrically connected to the connecting device 220 positioned on the upper deck 210 through the upper deck 210. In this case, the connection portion of the upper deck 210 through which the power cable 100 penetrates is waterproofed to prevent the connection device 220 from being submerged.

At least one buoyancy control device 230 may be formed on the upper deck 210. The buoyancy control device 230 is a device that can provide buoyancy to the underwater tower 200, for example, may be an air tank or a device that performs a similar function. Underwater pylon 200 is buoyant from one or more buoyancy control device 230 is to be floating on the water surface.

Meanwhile, a reactive power compensation device or a power conversion device may be additionally installed on the upper deck 210 in addition to the connection device 220.

In addition, by installing a sound wave detection device on the underwater tower 200 or the power cable 100 may be used for commercial or military purposes.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention.

Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments.

The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

Claims (5)

In the power system connection method using the underwater tower,
Embedding the power cable from the first point on the ground to the water within a certain depth,
Floating one or more underwater pylons at predetermined intervals from the point at which the power cable is buried to the water within a predetermined depth of a second point on the ground;
Connecting the power cable via the underwater pylon from the point at which the power cable is buried to the water within a predetermined depth of the second point; and
Embedding the power cable from the water within a predetermined depth of the second point to the second point
Power system linkage method comprising a. The method of claim 1,
The power cable is characterized in that the neutral buoyancy, power system linkage method. The method of claim 1,
The underwater steel tower includes a power system connection method comprising one or more buoyancy control device for maintaining buoyancy. The method of claim 1,
The power cable is connected to the lower surface of the upper deck of the underwater tower, power system linkage method is handed over to the connecting device mounted on the upper surface of the upper deck. The method of claim 1,
And the power tower or the power cable is fixed by one or more position fixing wires.

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