CN205863765U

CN205863765U - Double bus scheme structure based on disconnecting switch segmentation in GIS power distribution equipment

Info

Publication number: CN205863765U
Application number: CN201620859561.1U
Authority: CN
Inventors: 翟云娟
Original assignee: Shanghai Guofu Electric Design Engineering Co Ltd
Current assignee: Shanghai Guofu Electric Design Engineering Co Ltd
Priority date: 2016-08-10
Filing date: 2016-08-10
Publication date: 2017-01-04
Anticipated expiration: 2026-08-10

Abstract

The utility model discloses double bus scheme structure based on disconnecting switch segmentation in a kind of GIS power distribution equipment, including being sequentially connected the standby line unit connect, #1 main transformer unit, standby two wires unit, #2 main transformer unit, second outgoing line unit, mother unit, #3 main transformer module, first outgoing line unit, #1 main transformer unit, connect between the unit of standby two wires and have the first bus-bar potential transformer, second bus grounding switch, mother unit, connect between #3 main transformer module and have the second bus-bar potential transformer, first bus grounding switch, it is characterized in that: standby two wires unit, two groups of disconnecting switch segmentations are set between #2 main transformer unit.Original double bus scheme, according to GIS device operation characteristic, improved by this utility model, it is to avoid the problem that in GIS enlarging or maintenance process, the staff of authority has a power failure, compared with double-bus section wiring, save 2 choppers, greatly reduce investment of substations, improve transformer station's power supply reliability.

Description

Double bus scheme structure based on disconnecting switch segmentation in GIS power distribution equipment

Technical field

This utility model relates to distribution technique field, particularly relates in a kind of GIS power distribution equipment based on disconnecting switch segmentation Double bus scheme structure.

Background technology

Distribution technique provision of being correlated with specifies: " the 220kV power distribution equipment in 220kV transformer station, when occupying importantly in systems Position, transmission line circuit number be 4 times and above time, preferably use double bus scheme ".For open type distribution device, 220kV, 110kV join When electric installation uses double bus scheme, can realize a bus and have a power failure when extending or overhaul, an other bus is the most charged Run, it is ensured that entirely stand when extending or overhaul and do not have a power failure.But for GIS arrangement, when 220kV, 110kV power distribution equipment uses double During bus wiring, due to GIS device self, need power failure of entirely standing, bring very big inconvenience to substation operation.

Utility model content

In view of the drawbacks described above of prior art, technical problem to be solved in the utility model is to provide a kind of GIS distribution Double bus scheme structure based on disconnecting switch segmentation in device, to solve the deficiencies in the prior art.

For achieving the above object, this utility model is based on disconnecting switch segmentation double in providing a kind of GIS power distribution equipment Bus bar wiring structure, including be sequentially connected connect a standby line unit, #1 main transformer unit, standby two wires unit, #2 main transformer unit, Second outgoing line unit, mother unit, #3 main transformer module, the first outgoing line unit, between described #1 main transformer unit, standby two wires unit Connecting and have the first bus-bar potential transformer, the second bus grounding switch, connecting between described mother unit, #3 main transformer module has the Two bus-bar potential transformers, the first bus grounding switch, it is characterised in that: between described standby two wires unit, #2 main transformer unit Two groups of disconnecting switch segmentations are set.

Double bus scheme structure based on disconnecting switch segmentation, described disconnecting switch in above-mentioned a kind of GIS power distribution equipment Step-by-step arrangement, in the centre of bus, makes both sides line feeder number equal.

Double bus scheme structure based on disconnecting switch segmentation, described disconnecting switch in above-mentioned a kind of GIS power distribution equipment Segmentation both sides are respectively provided with 1 group of bus equipment and 1 group of earthed switch.

The beneficial effects of the utility model are:

Original double bus scheme, according to GIS device operation characteristic, improved by this utility model, it is to avoid GIS expansion Build or the problem of full station power failure in maintenance process, compared with double-bus section wiring, save 2 choppers, greatly reduce Investment of substations, improves transformer station's power supply reliability.

Below with reference to accompanying drawing, the technique effect of design of the present utility model, concrete structure and generation is made furtherly Bright, to be fully understood from the purpose of this utility model, feature and effect.

Accompanying drawing explanation

Fig. 1 is the electrical structure schematic diagram between a standby line of the present utility model and standby two wires.

Fig. 2 is this utility model standby two wires unit, the electrical structure schematic diagram of #2 main transformer unit improvement.

Fig. 3 is the second outgoing line unit electrical structure schematic diagram of the present utility model.

Fig. 4 is the first outgoing line unit electrical structure schematic diagram of the present utility model.

Detailed description of the invention

As it is shown in figure 1, double bus scheme structure based on disconnecting switch segmentation in a kind of GIS power distribution equipment, including successively The standby line unit that is connected, #1 main transformer unit, standby two wires unit, #2 main transformer unit, the second outgoing line unit, mother list Unit, #3 main transformer module, the first outgoing line unit, connect between described #1 main transformer unit, standby two wires unit and have the first busbar voltage Transformer, the second bus grounding switch, between described mother unit, #3 main transformer module connect have the second bus-bar potential transformer, First bus grounding switch, it is characterised in that: between described standby two wires unit, #2 main transformer unit, two groups of disconnecting switch are set and divide Section.

This utility model installs 2 groups of disconnecting switch on I mother, mother II respectively additional, then when pressure test is done in GIS enlarging, and can To use sectionalizer to be disconnected with running end by enlarging end, it is ensured that one section of bus can be properly functioning.As extended standby one During line, on the left of disconnecting switch segmentation, bus has a power failure, and right side bus is properly functioning, it is to avoid what during enlarging, full station had a power failure asks Topic.For realizing above-mentioned functions, when using this kind of connection type, should be noted following problem:

(1) disconnecting switch segmentation should be arranged in the centre of two groups of buses as far as possible, makes both sides line feeder number roughly equal；

(2) compared with double bus scheme, 1 group of bus equipment and 1 group of ground connection should be respectively provided with in disconnecting switch segmentation both sides Switch, during to ensure that sectionalizer is opened, two side bus all can run.

Preferred embodiment of the present utility model described in detail above.Should be appreciated that the ordinary skill people of this area Member just can make many modifications and variations according to design of the present utility model without creative work.Therefore, all technology neck In territory, technical staff passes through logical analysis, reasoning or limited reality on the basis of existing technology according to design of the present utility model Test available technical scheme, all should be in the protection domain being defined in the patent claims.

Claims

1. a double bus scheme structure based on disconnecting switch segmentation in GIS power distribution equipment, including being sequentially connected connect standby One line unit, #1 main transformer unit, standby two wires unit, #2 main transformer unit, the second outgoing line unit, mother unit, #3 main transformer module, First outgoing line unit, connects between described #1 main transformer unit, standby two wires unit and has the first bus-bar potential transformer, the second bus Earthed switch, connects between described mother unit, #3 main transformer module and has the second bus-bar potential transformer, the first busbar grounding to open Close, it is characterised in that: between described standby two wires unit, #2 main transformer unit, two groups of disconnecting switch segmentations are set.

2. double bus scheme structure based on disconnecting switch segmentation in GIS power distribution equipment as claimed in claim 1, its feature exists In: described disconnecting switch step-by-step arrangement, in the centre of bus, makes both sides line feeder number equal.

3. double bus scheme structure based on disconnecting switch segmentation in GIS power distribution equipment as claimed in claim 1, its feature exists In: described disconnecting switch segmentation both sides are respectively provided with 1 group of bus equipment and 1 group of earthed switch.