A HGIS power distribution device structure with reduced number of outgoing line intervals

Abstract

The present invention discloses an HGIS power distribution device structure that reduces the number of outgoing line bays. The outgoing lines at the 750kV busbar end utilize a half-circuit breaker connection. A complete busbar string includes a conventional outgoing line connected through an outgoing line frame and a lateral outgoing line connected through the space at the busbar end. The conventional outgoing line exits through the upper portion of the high-span II busbar through the bushing near the HGIS circuit breaker II busbar in the HGIS circuit breaker. The lateral outgoing line jumps to the upper portion of the outgoing line transition busbar within the side bay through the side bushing of the HGIS circuit breaker near the HGIS I busbar in the HGIS circuit breaker. The line is then led to the outgoing line transition busbar within the side bay by a down conductor and finally exits laterally through the end of the outgoing line transition busbar within the side bay. The present invention utilizes vertical spatial arrangement to stagger the upper, middle, and lower layers within the bay, achieving the effect of compressing the spatial spacing through spatial arrangement.

Description

Technical Field

[0001] The invention belongs to the field of power transmission and transformation, and in particular relates to an HGIS power distribution device structure capable of reducing the number of outgoing line intervals. Background Art

[0002] With the rapid development of power grid construction, the scale of ultra-high voltage substation projects is increasing. The large footprint of conventional distribution equipment layouts is becoming increasingly prominent. Land reserves are severely insufficient, and the costs of land acquisition and demolition for station sites are increasing. Land acquisition costs are showing a clear upward trend, making substation site selection increasingly difficult. Improving land resource utilization is a challenge that power grid construction must address. Regarding the design of high-voltage distribution equipment in substations, optimizing the distribution equipment's outgoing line method and comprehensively considering a three-dimensional, compact layout when designing the distribution equipment, outgoing line structure, and outgoing line corridors can reduce outgoing line spacing, maximize land conservation, and improve land utilization. This provides technical support for subsequent substation construction and is of great significance. Summary of the Invention

[0003] The purpose of the present invention is to address the problem of large floor space occupied by the distribution device layout in the above-mentioned prior art, and to provide an HGIS distribution device structure with reduced number of outgoing line intervals, thereby reducing the outgoing line intervals, improving land utilization, and saving equipment investment.

[0004] To achieve the above objectives, the present invention provides an HGIS power distribution device structure that reduces the number of outgoing line bays. The outgoing lines at the busbar ends are connected using a half-circuit breaker. A complete busbar string includes a conventional outgoing line connected through an outgoing line frame and a lateral outgoing line connected using the space at the busbar end. The two outgoing lines share the same bay width, and the space within the bay is divided into three layers: upper, middle, and lower. The main busbar is disconnected from the busbar in the side bay at the end, and the busbar in the side bay serves as an outgoing line transition busbar for the lateral outgoing lines.

[0005] Preferably, the bus voltage level of the HGIS power distribution device is 750kV.

[0006] Preferably, the conventional outgoing line is output through the upper part of the high-span II busbar through the side bushing of the HGIS circuit breaker near the HGIS circuit breaker II busbar; the lateral outgoing line is jumped through the side bushing of the HGIS circuit breaker near the HGIS I busbar side to the upper part of the outgoing line transition busbar in the side bay, and then led to the outgoing line transition busbar in the side bay by the down conductor, and finally output laterally through the end of the outgoing line transition busbar in the side bay.

[0007] Preferably, the conventional outgoing line is output from the upper portion of the high-span II busbar of the HGIS circuit breaker through a high-span conductor.

[0008] Preferably, for the HGIS I busbar side circuit breaker side bushing outside the HGIS I busbar side circuit breaker, the HGIS I busbar side circuit breaker side bushing of phase C is led upward at a 90-degree angle to the C-phase end of the I busbar through the upper guide wire.

[0009] Preferably, for the HGIS I busbar side circuit breaker side bushing outside the HGIS I busbar side circuit breaker, the HGIS I busbar side circuit breaker side bushing of phase B is turned 90 degrees through the transition tube mother and the support insulator, and then led upward to the B phase end of the I busbar through the upper guide wire side.

[0010] Preferably, for the HGIS I busbar side circuit breaker side bushing outside the HGIS I busbar side circuit breaker, the HGIS I busbar side circuit breaker side bushing of phase A is turned 90 degrees through the transition tube mother and the support insulator, and then led upward to the A phase end of the I busbar through the upper guide wire side.

[0011] Compared with the prior art, the present invention has the following beneficial effects: by disconnecting the main busbar in the side interval of the end, the main busbar in the side interval serves as the outgoing line transition busbar for the lateral outgoing line, and utilizing the vertical arrangement in space, the upper, middle and lower layers in the interval are staggered up and down, and the spatial arrangement method is used to achieve the effect of compressing the space interval. The two outgoing lines share the same interval width, and the vertical staggering method can effectively compress the number of outgoing line intervals, save the floor space of the substation, reduce the amount of steel used in the frame, and save on frame steel and civil engineering foundation investment. The present invention is different from the conventional distribution device layout. Due to the reduction in intervals, the length of the main busbar and the conductors in the intervals is also reduced accordingly, saving equipment investment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 Schematic diagram of the main electrical connections of the HGIS power distribution device structure of the present invention;

[0013] Figure 2 An electrical plan view of the HGIS power distribution device structure of the present invention;

[0014] Figure 3 A schematic cross-sectional view of a conventional outgoing line of the HGIS power distribution device structure of the present invention;

[0015] Figure 4 A three-dimensional schematic diagram of the conventional outgoing line of the HGIS power distribution device structure of the present invention;

[0016] Figure 5 A schematic cross-sectional view of the side-outlet wiring of the HGIS power distribution device structure of the present invention;

[0017] Figure 6 A three-dimensional schematic diagram of the lateral cable outlet structure of the HGIS power distribution device of the present invention.

[0018] In the attached figure: 1-HGIS I busbar side circuit breaker; 1a-HGIS I busbar side circuit breaker side bushing; 2-HGIS circuit breaker; 2a-HGIS I busbar side bushing; 2b-HGIS II busbar side bushing; 3-HGIS II busbar side circuit breaker; 3a-HGIS II busbar side circuit breaker side bushing; 4-outgoing high-voltage reactor; 5-lightning arrester; 6-voltage transformer; 7-post insulator; 8-I busbar; 9-II busbar; 10-outgoing transition busbar; 11-high-span conductor; 12-down conductor; 13-outgoing conductor; 14-upper conductor; 15-transition tube bus. DETAILED DESCRIPTION

[0019] The present invention will be described in further detail below with reference to the accompanying drawings.

[0020] See also Figure 1 The present invention provides an HGIS power distribution device structure that reduces the number of outgoing line intervals. For a 750kV busbar, a half-circuit breaker connection is used. A complete busbar string includes a conventional outgoing line connected through an outgoing line frame and a side outgoing line connected using the space at the end of the busbar. Figure 2 、 Figure 3 and Figure 4 The conventional outgoing line passes through the upper part of the high-span II busbar near the HGIS circuit breaker II busbar side bushing 2b of the HGIS circuit breaker 2.

[0021] See also Figure 2 、 Figure 5 and Figure 6 The I busbar 8 of the HGIS power distribution device structure is disconnected from the busbar in the side bay at the end. The busbar in the side bay serves as the outgoing line transition busbar 10 for lateral outgoing lines. The lateral outgoing lines pass through the HGIS circuit breaker 2 near the side bushing 1a of the HGIS I busbar, jump to the upper part of the outgoing line transition busbar 10 in the side bay, are then led by down conductors 12 to the outgoing line transition busbar 10 in the side bay, and finally exit laterally through the end of the outgoing line transition busbar 10 in the side bay.

[0022] For the HGIS I busbar side breaker bushing 1a outside the HGIS I busbar side circuit breaker 1, the C-phase HGIS I busbar side breaker bushing 1a is led upward 90 degrees to the C-phase end of the I busbar via the upper guide wire 14. The B-phase HGIS I busbar side breaker bushing 1a is turned 90 degrees through the transition tube mother 15 and the post insulator 7, and then led upward to the B-phase end of the I busbar 8 via the upper guide wire 14. The A-phase HGIS I busbar side breaker bushing 1a is turned 90 degrees through the transition tube mother 15 and the post insulator 7, and then led upward to the A-phase end of the I busbar 8 via the upper guide wire 14.

[0023] See also Figure 2 The HGIS power distribution device structure of the present invention disconnects the main busbar in the side interval of the end, and uses the main busbar in the side interval as the outgoing line transition busbar. By utilizing the vertical arrangement in space, the upper, middle and lower layers in the interval are staggered up and down, and the effect of compressing the space interval is achieved by utilizing the spatial arrangement method.

[0024] The two outgoing lines share the same interval width. By using a vertical staggered approach, the number of outgoing line intervals can be effectively compressed, saving the substation's floor space, reducing the amount of steel used in the structure, and saving on structure steel and civil engineering foundation investment.

[0025] The HGIS power distribution device structure of the present invention is different from the conventional power distribution device layout. Since the busbar end position is used for line outlet, the number of intervals is reduced, and the length of the main busbar and the conductor in the interval is also correspondingly reduced, saving equipment investment and reducing the floor space. The construction and installation are more convenient, and the installation, maintenance and operation are more convenient, safer and more reliable. It can be applied in engineering and provides a new solution for line outlet design.

[0026] The above content is a further detailed description of the present invention in combination with the preferred embodiment. It cannot be considered that the specific embodiments of the present invention are limited to this. For ordinary technicians in the relevant technical field, without departing from the concept of the present invention, they can also make several simple deductions or replacements, which should be regarded as falling within the scope of protection of the present invention.

Claims

1. An HGIS power distribution device structure for reducing the number of outgoing line intervals, characterized by: The busbar end outgoing line adopts a half-circuit breaker connection. A complete busbar string includes a conventional outgoing line connected through the outgoing line frame and a lateral outgoing line connected using the space at the busbar end. The two outgoing lines share the same bay width. The space within the bay is divided into three layers: upper, middle, and lower. The main busbar is disconnected from the busbar in the side bay at the end. The busbar in the side bay serves as the outgoing line transition busbar (10) for the lateral outgoing line. The upper, middle, and lower layers in the bay are staggered by vertical arrangement in space. The conventional outgoing line is passed through the HGIS circuit breaker (2) and the upper part of the high-span II busbar close to the HGIS circuit breaker II busbar side bushing (2b); The side outgoing line passes through the HGIS circuit breaker (2) near the HGIS I busbar side circuit breaker side bushing (1a) and jumps to the upper part of the outgoing line transition busbar (10) in the side interval, and is then led to the outgoing line transition busbar (10) in the side interval by the down conductor (12), and finally exits laterally through the end of the outgoing line transition busbar (10) in the side interval.

2. The HGIS power distribution device structure for reducing the number of outgoing line intervals according to claim 1 is characterized in that: The bus voltage level of the HGIS distribution device is 750kV.

3. The HGIS power distribution device structure for reducing the number of outgoing line intervals according to claim 1 is characterized in that: The conventional outgoing line is led out from the upper portion of the high-span II busbar of the HGIS circuit breaker (2) through a high-span conductor (11).

4. The HGIS power distribution device structure for reducing the number of outgoing line intervals according to claim 1 is characterized in that: For the HGIS I busbar side circuit breaker side bushing (1a) outside the HGIS I busbar side circuit breaker (1), the HGIS I busbar side circuit breaker side bushing (1a) of phase C is led upward at a 90-degree angle to the end of phase C of the I busbar through an upper guide wire (14).

5. The HGIS power distribution device structure for reducing the number of outgoing line intervals according to claim 1 is characterized in that: For the HGIS I busbar side circuit breaker side bushing (1a) outside the HGIS I busbar side circuit breaker (1), the HGIS I busbar side circuit breaker side bushing (1a) of the B phase is turned 90 degrees through the transition tube mother (15) and the support insulator (7), and then led upward to the B phase end of the I busbar (8) through the upper guide wire (14).

6. The HGIS power distribution device structure for reducing the number of outgoing line intervals according to claim 1 is characterized in that: For the HGIS I busbar side circuit breaker side bushing (1a) outside the HGIS I busbar side circuit breaker (1), the HGIS I busbar side circuit breaker side bushing (1a) of phase A is turned 90 degrees through the transition tube mother (15) and the support insulator (7), and then led upward to the A phase end of the I busbar (8) through the upper guide wire (14).

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