CN201985528U - Series compensation system adopting line iron towers - Google Patents

Abstract

The utility model discloses a series compensation system using a line iron tower. The series compensation system includes a series compensation device body, a line iron tower, wires, insulator strings and open equipment; Arrange the body of the series compensation device on both sides or one side of the line respectively. The utility model adopts a line iron tower in the power distribution device, and the incoming and outgoing lines are all vertically arranged series compensation devices. , convenient operation and maintenance, etc.; and provides a new optimized solution structure for the design and layout of the power distribution device of the series compensation device.

Description

A Series Compensation System Using Line Towers

Technical field:

The utility model belongs to the field of high-voltage electric equipment, and relates to a series compensation device, in particular to a design in which line iron towers are used in the power distribution device of the series compensation device, and the incoming and outgoing lines are arranged vertically.

Background technique:

With the rapid growth of the national economy, a large number of 500kV, 750kV and 1000kV substations have been built and put into operation in China. The transmission capacity and stability of the power grid are also undergoing severe tests. To solve this problem, some lines need to be installed with series compensation devices. According to the system conditions, the series compensation device can be built together with the substation or a series compensation station can be set up separately. According to the conventional layout of the current series compensation device, the entrance and exit lines are generally adopted in a portal frame, and the wires are arranged in parallel, which occupies a large area. Land is becoming increasingly valuable as a non-renewable resource, and the contradiction between the two is growing; at the same time, the arrangement of conventional series compensation devices is difficult to solve the problem of staggered arrangement between phases of the same circuit, which is not conducive to operation and maintenance. Therefore, it is necessary to study the layout design scheme of the series compensation device, mainly to solve the following problems: when the area occupied by the series compensation device is limited, and the conventional layout method is difficult to meet the land occupation requirements, how to reasonably optimize the series compensation arrangement scheme, Meet the land occupation index and save the cost of land acquisition; the staggered layout of the phases of the same circuit of the conventional series compensation device is not conducive to operation and maintenance. How to solve this problem and meet the requirements of the operating unit; the structure of the conventional series compensation system is complicated, and the amount of steel is large. How to simplify wiring, save steel consumption, and save investment in wires and fittings.

Utility model content:

The purpose of this utility model is to provide a new design structure of a series compensation device that can meet the needs of actual engineering, using iron towers in the power distribution device, and the incoming and outgoing lines are arranged vertically.

In order to achieve the above object, the utility model is realized by taking the following technical structure:

A series compensation system using a line iron tower, the series compensation system includes a series compensation device body, a line iron tower, wires, insulator strings and open equipment; the incoming and outgoing lines of the series compensation system use line iron towers, and the series compensation device respectively The body is arranged on both sides or one side of the line.

The body of the series compensation device includes a series capacitor, a lightning arrester, a discharge gap, a bypass circuit breaker, an auxiliary circuit breaker, a damping element, auxiliary equipment, and an insulating platform.

The open equipment includes lightning arresters, disconnectors and voltage transformers.

A lightning arrester, an isolating switch and a voltage transformer are arranged beside the main body of the series compensation device.

The line iron tower is a tower type for double-circuit or single-circuit lines on the same tower, and the incoming and outgoing lines are arranged vertically.

There are one or more insulating platforms.

The series compensation system of the utility model adopts a line iron tower, and the incoming and outgoing lines are all vertically arranged in a new design structure of the series compensation device. Vertically arranged, corresponding to the double circuit and single circuit tower type in the same tower, the series compensation device is arranged on both sides or one side of the line respectively.

The utility model advantage is:

1. The line iron tower is used, and the incoming and outgoing lines are arranged in the vertical direction, which is not only conducive to the reasonable partition of the series compensation device on different lines, but also can greatly reduce the area occupied by the series compensation distribution device, reduce the cost of land acquisition, and save land resources;

2. It avoids the staggered layout of the series compensation platforms of each phase installed on different lines, and creates favorable conditions for the normal operation, maintenance and inspection between lines and between lines and series compensation. Neither will affect the normal operation of this circuit or another circuit;

3. The series compensation device is arranged on the outside of the line, which reduces the loss of power failure during the maintenance of the series compensation device and saves engineering investment.

4. Due to the adoption of the same tower type and wire layout as the line professional, it can cooperate more harmoniously with the line and reduce the total investment of power transmission and transformation projects.

5. According to the actual situation of the substation (or series compensation station), the buildings are arranged under the incoming and outgoing wires, without additional land occupation, further saving land resources.

6. The line tower is only equipped with one incoming line and one outgoing line tower, which is also used for the down-leading connection of the A-phase and C-phase wires. The connection of the B-phase wires uses two tension insulators connected in series in the middle of the line, and no separate design is required. The line tower saves investment.

7. The structure of this scheme uses less steel, saving civil construction investment;

8. The scheme has simple wiring and saves investment in hardware and wires.

Description of drawings:

Fig. 1 is a schematic diagram of electrical principle wiring of the utility model. In the figure: 1. wire; 2. main body of the series compensation device; 3. isolating switch; 4. lightning arrester; 5. voltage transformer; 6. isolating switch; 7. lightning arrester.

Fig. 2 is a schematic plan view of the power distribution device of the present invention. In the figure: 1. wire; 2. main body of series compensation device; 3. isolating switch; 4. lightning arrester; 5. voltage transformer; 6. isolating switch; 7. lightning arrester; 8. iron tower.

Fig. 3 is a schematic diagram of a longitudinal section of the power distribution device of the present invention. In the figure: 1, wire; 2, series compensation device body; 4, arrester; 5, voltage transformer; 6, isolating switch.

Fig. 4 is a schematic diagram of a lateral cross-section of the power distribution device of the present invention (connection cross-section of the middle-phase wire). In the figure: 1, wire; 2, series compensation device body; 3, isolating switch; 4, lightning arrester. It should be noted that the wires are divided into three phases A, B, and C. This figure only shows the connection section of the middle phase (that is, B phase), and the connection sections of the other two phases are similar.

Detailed ways:

Below in conjunction with accompanying drawing, the utility model is described in further detail:

Referring to Figures 1, 2, 3, and 4, a new design structure of a series compensation device power distribution device that uses line iron towers in the power distribution device and the incoming and outgoing lines are vertically arranged is shown in Figures 1 to 4. It can be seen from the figure that this kind of design layout adopts the line iron tower, and the incoming and outgoing lines are arranged vertically, so it can be very conveniently matched with the professional line. The series compensation devices of each phase are not interlaced with each other. At the same time, it saves a lot of land, which is greatly optimized compared with the layout scheme of conventional series compensation devices.

Through the above analysis, it can be concluded that the new design structure of the power distribution device adopts the iron tower of the line in the power distribution device, and the incoming and outgoing lines are arranged vertically. The characteristics of substation project investment, convenient operation and maintenance, etc. can be applied in the project; and it provides a new optimized solution structure for the design and layout of the power distribution device of the series compensation device.

The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments. It cannot be determined that the specific embodiments of the present invention are limited thereto. Under the circumstances, some simple deduction or replacement can also be made, all of which should be regarded as belonging to the scope of patent protection determined by the submitted claims of the present invention.

Claims (6)

1. A series compensation system adopting line iron tower is characterized in that: said series compensation system comprises series compensation device body, line iron tower, lead, insulator string and open equipment; The incoming and outgoing lines of said series compensation system all adopt line iron tower , respectively arrange the body of the series compensation device on both sides or one side of the line. 2. A kind of line tower series compensation system as claimed in claim 1, characterized in that: the series compensation device body includes series capacitors, lightning arresters, discharge gaps, bypass circuit breakers, auxiliary circuit breakers, damping elements, auxiliary equipment , Insulation platform. 3. A series compensation system using line iron towers as claimed in claim 1, characterized in that: said open equipment includes lightning arresters, isolating switches and voltage transformers. 4. A series compensation system using line iron towers as claimed in claim 1, characterized in that: lightning arresters, isolating switches, and voltage transformers are arranged beside the body of the series compensation device. 5. A series compensation system using line iron towers as claimed in claim 1, characterized in that: said line iron towers are double-circuit or single-circuit towers on the same tower, and the incoming and outgoing lines are arranged vertically. 6. As claimed in claim 1, a series compensation system using line iron towers is characterized in that: said line iron towers only have one incoming line tower and one outgoing line tower, which are also used for the connection under the guidance of the A phase and C phase wires, and the B phase Two strain insulators are connected in series in the middle of the line at the connection of the wires, and no separate line tower is installed. the

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