CN107482523A - Double bus scheme GIS device and its repair method, pressure test method - Google Patents
Double bus scheme GIS device and its repair method, pressure test method Download PDFInfo
- Publication number
- CN107482523A CN107482523A CN201710860883.7A CN201710860883A CN107482523A CN 107482523 A CN107482523 A CN 107482523A CN 201710860883 A CN201710860883 A CN 201710860883A CN 107482523 A CN107482523 A CN 107482523A
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- Prior art keywords
- air chamber
- bus
- chamber unit
- station
- mother
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/0358—Connections to in or out conductors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1254—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of gas-insulated power appliances or vacuum gaps
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/20—Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards
- H02B1/22—Layouts for duplicate bus-bar selection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
Abstract
The present invention is a kind of double bus scheme GIS device, including outgoing line unit, the first bus, the second bus, mother line, the first air chamber group, the second air chamber group, the 9th air chamber unit, mother air chamber；Outgoing line unit includes the first outlet and the second outlet, in addition to the conversion line of the first outlet of connection and the second outlet, and conversion line, which is provided with, is used for opening and closing of change-over switch, and outgoing line unit is provided with multiple.When carrying out Disintegration overhaul to the first circuit element or tertiary circuit element or change-over switch, stop together without double-bus；When carrying out pressure test to the first bus or the second bus, stop together without double-bus；When carrying out pressure test to the first three-station or the second three-station or the 3rd three-station or the 4th three-station, stop without double-bus is same, stop even if double-bus is same, also the first outlet and the second outlet can be connected by change-over switch, form temporary power passage, to improve power supply reliability, generation system operation risk is avoided.
Description
Technical field
The present invention relates to GIS device technical field, more particularly to a kind of double bus scheme GIS device and its maintenance side
Method, pressure test method.
Background technology
GIS is Gas Insulated Switchgear english abbreviation, refers to gas insulated switchgear equipment, because
Its floor space, antidetonation and anti-pollution performance, electromagnetic radiation and operation noise etc. comprehensive advantage, in power engineering
Application gradually increase.
According to DL/T 5218-2012《220kV~750kV Substation Design technical regulations》, in 220kV transformer stations
220kV power distribution equipments, when occupy critical role in systems, transmission line circuit number is 4 times and the above when, preferably using double bus scheme.
110kV, 66kV power distribution equipment in 220kV transformer stations, when transmission line circuit number is more than 6 times, double-bus or double mothers can be used
Line section wiring.
When double bus scheme mode outstanding feature can be achieved on single busbar power failure, by " bus " operation without shadow
Ring inlet-outlet line power elements.The GIS device of existing double bus scheme due to its design feature in breaker air chamber Disintegration overhaul and
Double-bus is both needed to when bus or bus isolating switch pressure test to stop together.Double-bus is same to stop that power supply reliability, increase system will be reduced
System operation risk, is the problem of grid company wishes strongly to avoid.
The content of the invention
Based on this, it is necessary to double-bus during for circuit element Disintegration overhaul and bus or bus isolating switch pressure test
With the problem of stopping, there is provided a kind of double bus scheme GIS device and its repair method, pressure test method.
Its technical scheme is as follows：
A kind of double bus scheme GIS device, including outgoing line unit, the first bus, the second bus, mother line, the first air chamber
Group, the second air chamber group, the 9th air chamber unit, mother air chamber；Outgoing line unit includes the first outlet and the second outlet, in addition to connection
First outlet and the conversion line of the second outlet, conversion line, which is provided with, is used for opening and closing of change-over switch, and outgoing line unit is set
Have multiple；First bus includes the first linkage section, and one end of the first outlet is electrically connected with the first linkage section, and the first outlet is at least set
There are the first three-station, the first circuit element and second circuit element；Second bus includes the second linkage section, the second outlet
One end electrically connects with the second linkage section, and the second outlet is at least provided with the second three-station, tertiary circuit element and the 4th circuit
Element；First bus also includes the first mother section, and the second bus also includes the second mother section, one end of mother line and the first mother
Section electrical connection, the other end of mother line electrically connect with the second mother section, and mother line is at least provided with the 3rd three-station, the four or three
Position switch and the 5th circuit element；High pressure sulfur hexafluoride gas is provided with first air chamber group, the first air chamber group includes the first gas
Chamber unit, the second air chamber unit, the 3rd air chamber unit and the 4th air chamber unit, the second air chamber unit be located at the first air chamber unit and
Between 3rd air chamber unit, the 3rd air chamber unit is located between the second air chamber unit and the 4th air chamber unit；In second air chamber group
Provided with high pressure sulfur hexafluoride gas, the second air chamber group includes the 5th air chamber unit, the 6th air chamber unit, the 7th air chamber unit and the
Eight air chamber units, the 6th air chamber unit are located between the 5th air chamber unit and the 7th air chamber unit, and the 7th air chamber unit is located at
Between six air chamber units and the 8th air chamber unit；9th air chamber unit is located between the second air chamber unit and the 6th air chamber unit；
First outlet is entered walking line by the first air chamber unit, the second air chamber unit, the 3rd air chamber unit and the 4th air chamber unit and set,
First linkage section and the first three-station are located in the first air chamber unit, and the first circuit element is located in the 3rd air chamber unit,
Second circuit element is located in the 4th air chamber unit, and the second outlet is by the 5th air chamber unit, the 6th air chamber unit, the 7th air chamber
Unit and the 8th air chamber unit enter walking line setting, and the second linkage section and the second three-station are located in the 5th air chamber unit,
Tertiary circuit element is located in the 7th air chamber unit, and the 4th circuit element is located in the 8th air chamber unit, and conversion line is by the
Two air chamber units, the 9th air chamber unit and the 6th air chamber unit enter the connection position of walking line setting, conversion line and the first outlet
It is set in the second air chamber unit, the link position of conversion line and the second outlet is located in the 6th air chamber unit, change-over switch
It is located in the 9th air chamber unit；Be provided with high pressure sulfur hexafluoride gas in mother air chamber, mother air chamber includes the first mother air chamber, the
Two mother air chambers, the 3rd mother air chamber, the 4th mother air chamber and the 5th mother air chamber, the second mother air chamber are located at the first mother gas
Between room and the 3rd mother air chamber, the 4th mother air chamber is located between the 3rd mother air chamber and the 5th mother air chamber；Mother line passes through
The first mother air chamber, the second mother air chamber, the 3rd mother air chamber, the 4th mother air chamber and the 5th mother air chamber is crossed to enter walking line and set
Put, the first mother section and the 3rd three-station are located in the first mother air chamber, and the second mother section and the 4th three-station are set
In the 5th mother air chamber, the 5th circuit element is located in the 3rd mother air chamber.
Above-mentioned double bus scheme GIS device, by the setting of the 9th air chamber unit and change-over switch, when to the first circuit elements
When part or tertiary circuit element or change-over switch carry out Disintegration overhaul, stop together without double-bus；When female to the first bus or second
When line carries out pressure test, stop together without double-bus；When to bus isolating switch, namely the first three-station or the two or three work
When bit switch or the 3rd three-station or the 4th three-station carry out pressure test, stop without double-bus is same, meanwhile,
When first bus has a power failure, closure change-over switch is run with operating to snap on the second bus the first outlet by " bus ",
Ensure the normal power supply of the first outlet, the second bus can be operated similarly when having a power failure, further to improve power supply reliability, avoid producing
Raw system operation risk, moreover, even if double-bus with stopping, can also be connected by change-over switch the first outlet and the second outlet with
Temporary power passage is formed, further improves power supply reliability.
Technical scheme is illustrated further below：
In one of the embodiments, in addition to the first wire box, the second wire box, cross box, the first bus-bar chamber and
Two bus-bar chambers, the first wire box include the first circuit element case, second circuit component box and the first cable terminal box, the second outlet
Case includes tertiary circuit component box, the 4th circuit element case and the second cable terminal box, one end of second circuit component box and the
One circuit element case is detachably connected, and the other end of second circuit component box is detachably connected with the first cable terminal box, and the 4th
One end of circuit element case is detachably connected with tertiary circuit component box, and the other end of the 4th circuit element case and the second cable are whole
End case is detachably connected, and the first cable terminal box is located at one end of the first wire box, the other end of the first wire box and the first mother
Line case is detachably connected, and the second cable terminal box is located at one end of the second wire box, the other end of the second wire box and the second mother
Line case is detachably connected, and one end of cross box is detachably connected with the first wire box, the other end of cross box and the second wire box
It is detachably connected, the first bus is located at the first bus-bar chamber, and the second bus is located at the second bus-bar chamber, and the first air chamber unit is located at first
The link position of wire box and the first bus-bar chamber, the 3rd air chamber unit are located at the first circuit element case, and the 4th air chamber unit is located at
Second circuit component box, the 5th air chamber unit is located at the second wire box and the link position of the second bus-bar chamber, the 7th air chamber unit
Located at tertiary circuit component box, the 8th air chamber unit is located at the 4th circuit element case, the second air chamber unit, the 6th air chamber unit and
9th air chamber unit is located at cross box.Pass through such setting so that outgoing line unit, the first bus, the second bus and conversion line
Road is in corresponding casing.
In one of the embodiments, the first wire box, the second wire box, cross box, the first bus-bar chamber and the second bus
Case is equipped with the stuffiness disc insulator for partitioned air chambers.Corresponding casing is divided into using stuffiness disc insulator
Different air chamber unit, to meet to fill the functional requirement for setting high pressure sulfur hexafluoride insulating gas and meeting high-voltage isulation.
A kind of repair method of double bus scheme GIS device described in technical scheme of any one as described above, including following step
Suddenly：
High pressure sulfur hexafluoride gas in 3rd air chamber unit is depressured, until the pressure in the 3rd air chamber unit is
Safety detection pressure；
High pressure sulfur hexafluoride gas pressure in second air chamber unit is reduced at least half of its original pressure, by the 4th
High pressure sulfur hexafluoride gas pressure in air chamber unit reduces at least half of its original pressure；
The first three-station in the first air chamber unit is disconnected, the two or three station disconnected in the 5th air chamber unit is opened
Close；
Start to carry out Disintegration overhaul to the first circuit element.
The step is directed to the first circuit element air chamber Disintegration overhaul, now, due to the first air chamber unit and the 5th air chamber list
Member can still maintain normal air chamber pressure, thus the first bus and the second bus are without having a power failure.Therefore, the repair method avoids
Double-bus is needed power supply reliability to be improved, similarly, to tertiary circuit with the problem of stopping during the first circuit element air chamber Disintegration overhaul
When element carries out air chamber Disintegration overhaul, double-bus can be similarly avoided to improve power supply reliability with the problem of stopping.
A kind of repair method of double bus scheme GIS device described in technical scheme of any one as described above, including following step
Suddenly：
High pressure sulfur hexafluoride gas in 9th air chamber unit is depressured, until the pressure in the 9th air chamber unit is
Safety detection pressure；
High pressure sulfur hexafluoride gas pressure in second air chamber unit is reduced at least half of its original pressure, by the 6th
High pressure sulfur hexafluoride gas pressure in air chamber unit reduces at least half of its original pressure；
The first three-station in the first air chamber unit is disconnected, disconnects the second three-station in the 5th air chamber unit
Start to carry out Disintegration overhaul to change-over switch.
The step is directed to change-over switch air chamber Disintegration overhaul, now, due to the first air chamber unit and the 5th air chamber unit still
Normal air chamber pressure can be maintained, thus the first bus and the second bus are without having a power failure.Therefore, the repair method avoids first
Double-bus is needed to improve power supply reliability with the problem of stopping during circuit element air chamber Disintegration overhaul.
A kind of pressure test method of double bus scheme GIS device described in technical scheme of any one as described above, normal fortune
During row, change-over switch is disconnected, and the first three-station, the second three-station, the 3rd three-station, the four or three station are opened
Pass, the first circuit element, second circuit element, tertiary circuit element, the 4th circuit element and the 5th circuit element close fortune
OK, when carrying out pressure test to the first bus or the first three-station, step (i) is performed；When to the second bus or second
Three-station carries out performing step (ii) during pressure test；When carrying out pressure test to the 3rd three-station, step is performed
Suddenly (iii)；When carrying out pressure test to the 4th three-station, step (iv) is performed；
(i) the second three-station, tertiary circuit element, the 3rd three-station and the 5th circuit element, are at least disconnected,
And make remaining each outlet of the first bus between the first bus at least provided with two fractures, to the first bus or the one or three
Position switch carries out pressure test；
(ii) the first three-station, the first circuit element, the 4th three-station and the 5th circuit elements, are at least disconnected
Part, and remaining each outlet of the second bus is provided with least two fractures between the second bus, to the second bus or
Two three-stations carry out pressure test；
(iii) the second three-station, tertiary circuit element, the 4th three-station, the 5th circuit elements, are at least disconnected
Part, and remaining each outlet of the first bus is provided with least two fractures between the first bus, the three or three station is opened
Put row pressure test into；
(iv) the first three-station, the first circuit element, the 3rd three-station, the 5th circuit element, are at least disconnected,
And remaining each outlet of the second bus is provided with least two fractures between the second bus, the 4th three-station is entered
Row pressure test.
Pressure test is carried out using this method, double-bus can be avoided with the problem of stopping, and ensures the first mother during pressure test
Wherein one in line or the second bus can be with normal operation, to ensure the power supply along bus, simultaneously as change-over switch
Set, more circuit normal power supplies can be also further ensured that, to improve power supply reliability.
Brief description of the drawings
Fig. 1 is the circuit and air chamber structure schematic diagram of double bus scheme GIS device；
Fig. 2 is the box structure diagram of double bus scheme GIS device；
Fig. 3 is the structural representation at Fig. 2 A-A visual angles；
Fig. 4 is the structural representation at Fig. 2 B-B visual angles；
Fig. 5 be Fig. 2 the wire box of removal first after C-C visual angles structural representation.
110th, the first bus-bar chamber, the 120, first circuit element case, 130, second circuit component box, the 140, first cable termination
Case, the 151, first air chamber unit, the 152, second air chamber unit, the 153, the 3rd air chamber unit, the 154, the 4th air chamber unit, 1020,
Cross box, the 1021, the 9th air chamber unit, the 210, second bus-bar chamber, 220, tertiary circuit component box, the 230, the 4th circuit element
Case, the 240, second cable terminal box, the 251, the 5th air chamber unit, the 252, the 6th air chamber unit, the 253, the 7th air chamber unit, 254,
8th air chamber unit, 300, stuffiness disc insulator, the 411, first mother air chamber, the 412, second mother air chamber, the 413, the 3rd
Mother air chamber, the 414, the 4th mother air chamber, the 415, the 5th mother air chamber.
Embodiment
Embodiments of the invention are described in detail below in conjunction with the accompanying drawings：
It should be noted that when alleged element is with another element " fixation " in text, it can be directly in another element
Above or there may also be element placed in the middle.When an element is considered as with another element " connection ", it can be straight
Another element is connected in succession or may be simultaneously present centering elements.On the contrary, when element is referred to as " directly existing " another element
" on " when, in the absence of intermediary element.Term as used herein " vertically ", " horizontal ", "left", "right" and similar table
State for illustrative purposes only, it is unique embodiment to be not offered as.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The implication that technical staff is generally understood that is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein " and/or " include one or more
The arbitrary and all combination of related Listed Items.
It should be noted that each reference represents respectively in Fig. 1：
The buses of BUSI- first, the buses of BUSII- second, TPS- three-stations, DS- disconnecting switch, GCB- breakers,
CT- current transformers, ES- earthed switches, VT- voltage transformers, CSE- cable terminal boxes.
As shown in figure 1, a kind of double bus scheme GIS device, including outgoing line unit, the first bus, the second bus, mother
Line, the first air chamber group, the second air chamber group, the 9th air chamber unit 1021, mother air chamber；Outgoing line unit includes the first outlet and second
Outlet, in addition to the conversion line of the first outlet of connection and the second outlet, conversion line, which is provided with, is used for opening and closing of conversion
Switch, outgoing line unit are provided with multiple；First bus includes the first linkage section, and one end of the first outlet is electrically connected with the first linkage section
Connect, the first outlet is at least provided with the first three-station, the first circuit element and second circuit element；Second bus includes second
Linkage section, one end of the second outlet electrically connect with the second linkage section, and the second outlet is at least provided with the second three-station, the 3rd electricity
Circuit component and the 4th circuit element；First bus also includes the first mother section, and the second bus also includes the second mother section, mother line
One end electrically connected with the first mother section, the other end of mother line electrically connects with the second mother section, and mother line is at least provided with the 3rd
Three-station, the 4th three-station and the 5th circuit element；It is provided with high pressure sulfur hexafluoride gas in first air chamber group, first
Air chamber group includes the first air chamber unit 151, the second air chamber unit 152, the 3rd air chamber unit 153 and the 4th air chamber unit 154, the
Two air chamber units 152 are located between the first air chamber unit 151 and the 3rd air chamber unit 153, and the 3rd air chamber unit 153 is located at second
Between the air chamber unit 154 of air chamber unit 152 and the 4th；High pressure sulfur hexafluoride gas, the second air chamber group are provided with second air chamber group
Including the 5th air chamber unit 251, the 6th air chamber unit 252, the 7th air chamber unit 253 and the 8th air chamber unit 254, the 6th air chamber
Unit 252 is located between the 5th air chamber unit 251 and the 7th air chamber unit 253, and the 7th air chamber unit 253 is located at the 6th air chamber list
Between the air chamber unit 254 of member 252 and the 8th；9th air chamber unit 1021 is located at the second air chamber unit 152 and the 6th air chamber unit
Between 252；The first air chamber unit 151, the second air chamber unit 152, the 3rd air chamber unit 153 and the 4th air chamber are passed through in first outlet
Unit 154 enters walking line setting, and the first linkage section and the first three-station are located in the first air chamber unit 151, the first circuit
Element is located in the 3rd air chamber unit 153, and second circuit element is located in the 4th air chamber unit 154, and the second outlet passes through the 5th
Air chamber unit 251, the 6th air chamber unit 252, the 7th air chamber unit 253 and the 8th air chamber unit 254 enter walking line and set, and second
Linkage section and the second three-station are located in the 5th air chamber unit 251, and tertiary circuit element is located at the 7th air chamber unit 253
Interior, the 4th circuit element is located in the 8th air chamber unit 254, and conversion line is by the second air chamber unit 152, the 9th air chamber unit
1021 and the 6th air chamber unit 252 enter walking line setting, the link position of conversion line and the first outlet is located at the second air chamber list
In member 152, the link position of conversion line and the second outlet is located in the 6th air chamber unit 252, and change-over switch is located at the 9th gas
In chamber unit 1021；High pressure sulfur hexafluoride gas is provided with mother air chamber, mother air chamber includes the first mother air chamber 411, second
Mother air chamber 412, the 3rd mother air chamber 413, the 4th mother air chamber 414 and the 5th mother air chamber 415, the second mother air chamber 412
It is located between the first mother air chamber 411 and the 3rd mother air chamber 413, the 4th mother air chamber 414 is located at the He of the 3rd mother air chamber 413
Between 5th mother air chamber 415；Mother line is by the first mother air chamber 411, the second mother air chamber 412, the 3rd mother air chamber
413rd, the 4th mother air chamber 414 and the 5th mother air chamber 415 enter walking line setting, and the first mother section and the 3rd three-station are set
In the first mother air chamber 411, the second mother section and the 4th three-station are located in the 5th mother air chamber 415, the 5th circuit
Element is located in the 3rd mother air chamber 413.
By the setting of the 9th air chamber unit 1021 and change-over switch, when to the first circuit element or tertiary circuit element or
When change-over switch carries out Disintegration overhaul, stop together without double-bus；When carrying out pressure test to the first bus or the second bus, nothing
Need double-bus is same to stop；When to bus isolating switch, namely the first three-station or the second three-station or the three or three station
When switch or the 4th three-station carry out pressure test, stop without double-bus is same, meanwhile, when the first bus has a power failure, close
Change-over switch is closed to snap on the second bus and run the first outlet by " bus " operation, ensures the normal of the first outlet
Power supply, the second bus can be operated similarly when having a power failure, further to improve power supply reliability, avoid generation system operation risk, condition
And stop even if double-bus is same, the first outlet and the second outlet can also be connected by change-over switch to form temporary power passage,
It is further to improve power supply reliability.
The inlet-outlet line quantity of double-bus offer is provided by the setting of multiple outgoing line units, improves power supplying efficiency, is led to
Crossing the setting of mother line realizes mutual contact between the first bus and the second bus, adds power supply reliability.
Because sulfur hexafluoride has good electrical insulation properties and excellent arc extinction performance, it is ensured that the height of gas indoor equipment
Press insulation requirements.
Further, the first circuit element, tertiary circuit element and the 5th circuit element comprise at least a breaker,
Second circuit element and the 4th circuit element comprise at least a three-station, to realize the first circuit element, respectively
Three-circuit element, the 5th circuit element, the disconnection of second circuit element and the 4th circuit element is out of service and closure starts to transport
OK.
Further, the first outlet and the second outlet can according to circumstances set more air chamber units and circuit element
To meet actual power transmission demand, the first outlet and the second outlet can also use other connections in addition to cable termination
Mode, to meet actual power transmission demand.
Specifically, as shown in figure 1, the first circuit element, tertiary circuit element and the 5th circuit element are disconnected including one
Road device and a current transformer；Second circuit element and the 4th circuit element include a three-station and a ground connection
Switch, the first outlet, the second outlet are also equipped with voltage transformer.
On the basis of any of the above-described individual embodiment, as shown in Figures 2 to 5, during GIS device for 110kV, in addition to
First wire box, the second wire box, cross box 1020, the first bus-bar chamber 110 and the second bus-bar chamber 210, the first wire box include
First circuit element case 120, the cable terminal box 140 of second circuit component box 130 and first, the second wire box include tertiary circuit
Component box 220, the 4th circuit element case 230 and the second cable terminal box 240, one end of second circuit component box 130 and first
Circuit element case 120 is detachably connected, and the other end of second circuit component box 130 detachably connects with the first cable terminal box 140
Connect, one end and the tertiary circuit component box 220 of the 4th circuit element case 230 are detachably connected, the 4th circuit element case 230 it is another
One end is detachably connected with the second cable terminal box 240, the first cable terminal box 140 be located at the first wire box one end, first
The other end of wire box is detachably connected with the first bus-bar chamber 110, and the second cable terminal box 240 is located at the one of the second wire box
End, the other end of the second wire box are detachably connected with the second bus-bar chamber 210, and one end of cross box 1020 can with the first wire box
Dismantling connection, the other end of cross box 1020 are detachably connected with the second wire box, and the first bus is located at the first bus-bar chamber 110,
Second bus is located at the second bus-bar chamber 210, connection of the first air chamber unit 151 located at the first wire box and the first bus-bar chamber 110
Position, the 3rd air chamber unit 153 are located at the first circuit element case 120, and the 4th air chamber unit 154 is located at second circuit component box
130, the 5th air chamber unit 251 is set located at the second wire box and the link position of the second bus-bar chamber 210, the 7th air chamber unit 253
In tertiary circuit component box 220, the 8th air chamber unit 254 is located at the 4th circuit element case 230, the second air chamber unit the 152, the 6th
The air chamber unit 1021 of air chamber unit 252 and the 9th is located at cross box 1020.Pass through such setting so that outgoing line unit, first
Bus, the second bus and conversion line are in corresponding casing.
Further, the first cable terminal box 140 and the second cable terminal box 240 can also be aerial condutor terminal.
On the basis of any one above-mentioned embodiment, as shown in Figures 2 to 5, the first wire box, the second wire box, turn
Change case 1020, the first bus-bar chamber 110 and the second bus-bar chamber 210 and be equipped with stuffiness disc insulator 300 for partitioned air chambers.
Corresponding casing is divided into different air chamber units using stuffiness disc insulator 300, to set high pressure lithium to meet to fill
Sulphur insulating gas meets the functional requirement of high-voltage isulation.
The present invention also provides a kind of repair method of the double bus scheme GIS device described in embodiment of any one as described above,
Comprise the following steps：
High pressure sulfur hexafluoride gas in 3rd air chamber unit 153 is depressured, until in the 3rd air chamber unit 153
Pressure is safety detection pressure；
High pressure sulfur hexafluoride gas pressure in second air chamber unit 152 is reduced at least half of its original pressure, will
High pressure sulfur hexafluoride gas pressure in 4th air chamber unit 154 reduces at least half of its original pressure；
The first three-station in the first air chamber unit 151 is disconnected, disconnects the two or three work in the 5th air chamber unit 251
Bit switch；
Start to carry out Disintegration overhaul to the first circuit element.
The step is directed to the first circuit element air chamber Disintegration overhaul, now, due to the first air chamber unit 151 and the 5th air chamber
Unit 251 can still maintain normal air chamber pressure, thus the first bus and the second bus are without having a power failure.Therefore, the repair method
Double-bus is needed to improve power supply reliability with the problem of stopping when avoiding the first circuit element air chamber Disintegration overhaul.
When carrying out air chamber Disintegration overhaul to the first circuit element, processing need to be bled off pressure to the 3rd air chamber unit 153 where it
And until the air pressure in the 3rd air chamber unit 153 is safety detection pressure, the second air chamber unit 152 and the 4th air chamber unit 154
It is adjacent with the 3rd air chamber unit 153, because the air pressure in the 3rd air chamber unit 153 is down to safety detection pressure, to avoid phase
The excessive initiation security incident of pressure difference between adjacent air chamber, will at least it be former to the second air chamber unit 152 and the 4th air chamber unit 154
The one of air pressure is semi-processed, now, because the first air chamber unit 151 and the 5th air chamber unit 251 can still maintain normal air chamber pressure,
Thus the first bus and the second bus are without having a power failure.Therefore, the repair method avoids the first circuit element air chamber solution physical examination
Double-bus is needed to improve power supply reliability with the problem of stopping when repairing.
Similarly, when carrying out air chamber Disintegration overhaul to tertiary circuit element, double-bus can be similarly avoided to be carried with the problem of stopping
High power supply reliability.
Specifically, as shown in figure 1, when the breaker GCB in the first circuit element carries out air chamber Disintegration overhaul：
First, the high pressure sulfur hexafluoride gas in the 3rd air chamber unit 153 is depressured, until the 3rd air chamber unit
Pressure in 153 is safety detection pressure；
Then, the sulfur hexafluoride gas pressure in the second air chamber unit 152 is reduced at least half of its original pressure, will
High pressure sulfur hexafluoride gas pressure in 4th air chamber unit 154 reduces at least half of its original pressure；
Then, the first three-station in the first air chamber unit 151 is disconnected, disconnects the in the 5th air chamber unit 251
Two three-stations；
Finally, start to carry out air chamber Disintegration overhaul to the breaker GCB of the first circuit element.
Similarly, air chamber Disintegration overhaul can be carried out to the breaker GCB in tertiary circuit element.
Operated by this kind, air chamber Disintegration overhaul either is carried out to the breaker GCB in the first circuit element, or it is right
Breaker GCB in tertiary circuit element carries out air chamber Disintegration overhaul, will not cause double-bus to ensure with the problem of stopping
Power supply reliability.
Other circuit elements after on to the first outlet along outlet direction, the first circuit element carry out air chamber disintegration
During maintenance, because centre has been spaced multiple air chambers, the normal operation of the first bus is had no effect on；Similarly, when to the second outlet
On along outlet direction, other circuit elements after tertiary circuit element carry out air chamber Disintegration overhaul when, nor affect on second
The normal operation of bus.Similarly, other each outgoing line units that can be applied on the first bus or the second bus.
It should be noted that the safety detection pressure is generally normal pressure.
The present invention also provides a kind of repair method of the double bus scheme GIS device described in embodiment of any one as described above,
Comprise the following steps：
High pressure sulfur hexafluoride gas in 9th air chamber unit 1021 is depressured, until in the 9th air chamber unit 1021
Pressure be safety detection pressure；
High pressure sulfur hexafluoride gas pressure in second air chamber unit 152 is reduced at least half of its original pressure, will
High pressure sulfur hexafluoride gas pressure in 6th air chamber unit 252 reduces at least half of its original pressure；
The first three-station in the first air chamber unit 151 is disconnected, disconnects the two or three work in the 5th air chamber unit 251
Bit switch
Start to carry out Disintegration overhaul to change-over switch.
The step is directed to change-over switch air chamber Disintegration overhaul, now, due to the first air chamber unit 151 and the 5th air chamber unit
251 can still maintain normal air chamber pressure, thus the first bus and the second bus are without having a power failure.Therefore, the repair method avoids
Double-bus is needed to improve power supply reliability with the problem of stopping during the first circuit element air chamber Disintegration overhaul.
The present invention also provides a kind of pressure test side of the double bus scheme GIS device described in embodiment of any one as described above
Method, during normal operation, change-over switch disconnects, the first three-station, the second three-station, the 3rd three-station, the 4th
Three-station, the first circuit element, second circuit element, tertiary circuit element, the 4th circuit element and the 5th circuit element
Closure operation, when carrying out pressure test to the first bus or the first three-station, perform step (i)；When female to second
Line or the second three-station carry out performing step (ii) during pressure test；When to the progress pressure test of the 3rd three-station
When, perform step (iii)；When carrying out pressure test to the 4th three-station, step (iv) is performed；
(i) the second three-station, tertiary circuit element, the 3rd three-station and the 5th circuit element, are at least disconnected,
And make remaining each outlet of the first bus between the first bus at least provided with two fractures, to the first bus or the one or three
Position switch carries out pressure test；
(ii) the first three-station, the first circuit element, the 4th three-station and the 5th circuit elements, are at least disconnected
Part, and remaining each outlet of the second bus is provided with least two fractures between the second bus, to the second bus or
Two three-stations carry out pressure test；
(iii) the second three-station, tertiary circuit element, the 4th three-station, the 5th circuit elements, are at least disconnected
Part, and remaining each outlet of the first bus is provided with least two fractures between the first bus, the three or three station is opened
Put row pressure test into；
(iv) the first three-station, the first circuit element, the 3rd three-station, the 5th circuit element, are at least disconnected,
And remaining each outlet of the second bus is provided with least two fractures between the second bus, the 4th three-station is entered
Row pressure test.
Pressure test is carried out using this method, double-bus can be avoided with the problem of stopping, and ensures the first mother during pressure test
Wherein one in line or the second bus can be with normal operation, to ensure the power supply along bus, simultaneously as change-over switch
Set, can also be further ensured that more circuit normal power supplies, to improve power supply reliability, reduce system operation risk.
When carrying out pressure test for bus or bus isolating switch, to avoid single break in test voltage and operation electricity
Puncture when pressing anti-phase 180 °, run unit typically requires pressure test position away from the fracture of normal operation element at least two.It is existing
GIS device when carrying out pressure test for bus or bus isolating switch, all disengaging kind of thread elements of double bus scheme are both needed to
Have a power failure.The present invention avoids double-bus and stopped together, improve power supply reliability, reduce system fortune by the setting of change-over switch
Sector-style danger.
Carried out it should be noted that carrying out pressurizeing by the first outlet during pressure test to the first bus, thus first is female
The first three-station pressure test operation in line pressure test, the first outlet is identical；Similarly, during the second bus pressure test
Pressurizeed and carried out by the second outlet, therefore the second three-station pressure test behaviour in the second bus pressure test, the second outlet
Make identical；When carrying out pressure test to the 3rd three-station, pressurizeed and carried out by the first outlet, the 4th three-station is entered
During row pressure test, pressurizeed and carried out by the second outlet.Certainly, the first outlet and the second outlet are not the limit to pressurized line
System, it can also use on other outgoing line units, resistance to carry out to the corresponding outlet pressurization that the first bus or the second bus connect
Pressure experiment.
As shown in figure 1, change-over switch is disconnecting switch DS, the first outlet and the second outlet can be disconnected by change-over switch
Or the annexation of closure the first bus of adjustment or the second bus, opening and closing of situation are respectively：
When the first bus and the equal normal operation of the second bus, change-over switch disconnects.First three-station, the two or three simultaneously
Position switch, the 3rd three-station, the 4th three-station, the first circuit element, second circuit element, tertiary circuit member
Part, the 4th circuit element and the 5th circuit element close.Now the first outlet is connected with the first bus, the second outlet and second
Bus connects；
First bus-bar fault and during the second bus normal operation, change-over switch closure.First three-station, the 3rd simultaneously
Three-station, the 4th three-station and the 5th circuit element disconnect, the second three-station, the first circuit element,
Two circuit elements, tertiary circuit element and the 4th circuit element close.Now the first outlet and the second outlet are female with second
Line connects；
Second bus-bar fault and during the first bus normal operation, change-over switch closure.Second three-station, the 3rd simultaneously
Three-station, the 4th three-station and the 5th circuit element disconnect, the first three-station, the first circuit element,
Two circuit elements, tertiary circuit element and the 4th circuit element close.Now the first outlet and the second outlet are female with first
Line connects.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope that this specification is recorded all is considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more specific and detailed, but simultaneously
Can not therefore it be construed as limiting the scope of the patent.It should be pointed out that come for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (6)
- A kind of 1. double bus scheme GIS device, it is characterised in that including：Outgoing line unit, the first bus, the second bus, mother line, the first air chamber group, the second air chamber group, the 9th air chamber unit, mother Air chamber；The outgoing line unit includes the first outlet and the second outlet, in addition to connects first outlet and second outlet Conversion line, the conversion line, which is provided with, is used for opening and closing of change-over switch, and the outgoing line unit is provided with multiple；First bus includes the first linkage section, and one end of first outlet electrically connects with first linkage section, described First outlet is at least provided with the first three-station, the first circuit element and second circuit element；Second bus includes the second linkage section, and one end of second outlet electrically connects with second linkage section, described Second outlet is at least provided with the second three-station, tertiary circuit element and the 4th circuit element；First bus also includes the first mother section, and second bus also includes the second mother section, and the one of the mother line End electrically connects with the first mother section, and the other end of the mother line electrically connects with the second mother section, the mother line At least provided with the 3rd three-station, the 4th three-station and the 5th circuit element；High pressure sulfur hexafluoride gas is provided with the first air chamber group, the first air chamber group includes the first air chamber unit, second Air chamber unit, the 3rd air chamber unit and the 4th air chamber unit, the second air chamber unit are located at the first air chamber unit and institute Between stating the 3rd air chamber unit, the 3rd air chamber unit be located at the second air chamber unit and the 4th air chamber unit it Between；High pressure sulfur hexafluoride gas is provided with the second air chamber group, the second air chamber group includes the 5th air chamber unit, the 6th Air chamber unit, the 7th air chamber unit and the 8th air chamber unit, the 6th air chamber unit are located at the 5th air chamber unit and institute Between stating the 7th air chamber unit, the 7th air chamber unit be located at the 6th air chamber unit and the 8th air chamber unit it Between；The 9th air chamber unit is located between the second air chamber unit and the 6th air chamber unit；First outlet is by the first air chamber unit, the second air chamber unit, the 3rd air chamber unit and described 4th air chamber unit enters walking line setting, and first linkage section and first three-station are located at the first air chamber list In member, first circuit element is located in the 3rd air chamber unit, and the second circuit element is located at the 4th air chamber In unit, the 5th air chamber unit, the 6th air chamber unit, the 7th air chamber unit and institute are passed through in second outlet State the 8th air chamber unit and enter walking line setting, second linkage section and second three-station are located at the 5th air chamber In unit, the tertiary circuit element is located in the 7th air chamber unit, and the 4th circuit element is located at the 8th gas In chamber unit, the conversion line passes through the second air chamber unit, the 9th air chamber unit and the 6th air chamber unit Enter walking line setting, the conversion line and the link position of first outlet are located in the second air chamber unit, described The link position of conversion line and second outlet is located in the 6th air chamber unit, and the change-over switch is located at described the In nine air chamber units；High pressure sulfur hexafluoride gas is provided with the mother air chamber, the mother air chamber includes the first mother air chamber, the second mother Air chamber, the 3rd mother air chamber, the 4th mother air chamber and the 5th mother air chamber, the second mother air chamber are located at first mother Between air chamber and the 3rd mother air chamber, the 4th mother air chamber is located at the 3rd mother air chamber and the 5th mother Between air chamber；The mother line is by the first mother air chamber, the second mother air chamber, the 3rd mother air chamber, the described 4th Mother air chamber and the 5th mother air chamber enter walking line setting, and the first mother section and the 3rd three-station are located at In the first mother air chamber, the second mother section and the 4th three-station are located in the 5th mother air chamber, 5th circuit element is located in the 3rd mother air chamber.
- 2. double bus scheme GIS device according to claim 1, it is characterised in that also go out including the first wire box, second Line case, cross box, the first bus-bar chamber and the second bus-bar chamber, first wire box include the first circuit element case, second circuit Component box and the first cable terminal box, second wire box include tertiary circuit component box, the 4th circuit element case and second Cable terminal box, one end of the second circuit component box are detachably connected with the first circuit element case, second electricity The other end of circuit component case is detachably connected with first cable terminal box, one end of the 4th circuit element case with it is described Tertiary circuit component box is detachably connected, and the other end and second cable terminal box of the 4th circuit element case are detachable Connection, first cable terminal box be located at first wire box one end, the other end of first wire box with it is described First bus-bar chamber is detachably connected, and second cable terminal box is located at one end of second wire box, second outlet The other end of case is detachably connected with second bus-bar chamber, and one end of the cross box detachably connects with first wire box Connect, the other end of the cross box is detachably connected with second wire box, and first bus is located at first bus Case, second bus are located at second bus-bar chamber, and the first air chamber unit is located at first wire box and described the The link position of one bus-bar chamber, the 3rd air chamber unit are located at the first circuit element case, and the 4th air chamber unit is set In the second circuit component box, connection of the 5th air chamber unit located at second wire box and second bus-bar chamber Position, the 7th air chamber unit are located at the tertiary circuit component box, and the 8th air chamber unit is located at the 4th circuit Component box, the second air chamber unit, the 6th air chamber unit and the 9th air chamber unit are located at the cross box.
- 3. double bus scheme GIS device according to claim 2, it is characterised in that first wire box, described second Wire box, the cross box, first bus-bar chamber and second bus-bar chamber are equipped with the stuffiness basin for partitioned air chambers Formula insulator.
- A kind of 4. repair method of double bus scheme GIS device as described in claim any one of 1-3, it is characterised in that bag Include following steps：High pressure sulfur hexafluoride gas in 3rd air chamber unit is depressured, until the pressure in the 3rd air chamber unit is Safety detection pressure；High pressure sulfur hexafluoride gas pressure in second air chamber unit is reduced at least half of its original pressure, by the 4th air chamber High pressure sulfur hexafluoride gas pressure in unit reduces at least half of its original pressure；First three-station in the first air chamber unit is disconnected, disconnects the two or three in the 5th air chamber unit Position switch；Start to carry out Disintegration overhaul to the first circuit element.
- A kind of 5. repair method of double bus scheme GIS device as described in claim any one of 1-3, it is characterised in that bag Include following steps：High pressure sulfur hexafluoride gas in 9th air chamber unit is depressured, until the pressure in the 9th air chamber unit is Safety detection pressure；High pressure sulfur hexafluoride gas pressure in second air chamber unit is reduced at least half of its original pressure, by the 6th air chamber High pressure sulfur hexafluoride gas pressure in unit reduces at least half of its original pressure；First three-station in the first air chamber unit is disconnected, disconnects the two or three in the 5th air chamber unit Position switchStart to carry out Disintegration overhaul to change-over switch.
- 6. a kind of pressure test method of double bus scheme GIS device as described in claim any one of 1-3, its feature exist When, normal operation, the change-over switch disconnects, first three-station, second three-station, the described 3rd Three-station, the 4th three-station, first circuit element, the second circuit element, the tertiary circuit Element, the 4th circuit element and the 5th circuit element close operation, when to first bus or described first When three-station carries out pressure test, step (i) is performed；When to second bus or second three-station progress Step (ii) is performed during pressure test；When carrying out pressure test to the 3rd three-station, step (iii) is performed；When When carrying out pressure test to the 4th three-station, step (iv) is performed；(i) second three-station, the tertiary circuit element, the 3rd three-station and described, are at least disconnected 5th circuit element, and make remaining each outlet of first bus disconnected at least provided with two between first bus Mouthful, pressure test is carried out to first bus or first three-station；(ii) first three-station, first circuit element, the 4th three-station and described, are at least disconnected 5th circuit element, and remaining each outlet of second bus is provided with least two between second bus and break Mouthful, pressure test is carried out to second bus or second three-station；(iii) second three-station, the tertiary circuit element, the 4th three-station, described, is at least disconnected 5th circuit element, and remaining each outlet of first bus is provided with least two between first bus and break Mouthful, pressure test is carried out to the 3rd three-station；(iv) first three-station, first circuit element, the 3rd three-station, described, is at least disconnected 5th circuit element, and remaining each outlet of second bus is provided with least two between second bus and break Mouthful, pressure test is carried out to the 4th three-station.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710860883.7A CN107482523B (en) | 2017-09-21 | 2017-09-21 | Double bus scheme GIS device and its repair method, pressure resistant test method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710860883.7A CN107482523B (en) | 2017-09-21 | 2017-09-21 | Double bus scheme GIS device and its repair method, pressure resistant test method |
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| CN107482523A true CN107482523A (en) | 2017-12-15 |
| CN107482523B CN107482523B (en) | 2019-11-22 |
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109347084A (en) * | 2018-12-05 | 2019-02-15 | 贵州电网有限责任公司 | A kind of direct current ring network cabinet circuit structure and application method |
| CN111239601A (en) * | 2020-03-05 | 2020-06-05 | 湖北省电力勘测设计院有限公司 | Method for detecting double-break bus isolating switch in 220 KV power transformation combined electrical equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57180301A (en) * | 1981-04-30 | 1982-11-06 | Hitachi Ltd | Gas insulated switching device |
| CN103368081A (en) * | 2013-07-10 | 2013-10-23 | 浙江省电力设计院 | Main electrical connection of double-bus disconnecting link section |
| CN204067884U (en) * | 2014-06-20 | 2014-12-31 | 国家电网公司 | A kind of distribution line based on double bus scheme |
| CN206364435U (en) * | 2016-11-17 | 2017-07-28 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | GIS buses standby spacing does not have a power failure enlarging functional module |
-
2017
- 2017-09-21 CN CN201710860883.7A patent/CN107482523B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57180301A (en) * | 1981-04-30 | 1982-11-06 | Hitachi Ltd | Gas insulated switching device |
| CN103368081A (en) * | 2013-07-10 | 2013-10-23 | 浙江省电力设计院 | Main electrical connection of double-bus disconnecting link section |
| CN204067884U (en) * | 2014-06-20 | 2014-12-31 | 国家电网公司 | A kind of distribution line based on double bus scheme |
| CN206364435U (en) * | 2016-11-17 | 2017-07-28 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | GIS buses standby spacing does not have a power failure enlarging functional module |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109347084A (en) * | 2018-12-05 | 2019-02-15 | 贵州电网有限责任公司 | A kind of direct current ring network cabinet circuit structure and application method |
| CN109347084B (en) * | 2018-12-05 | 2024-04-23 | 贵州电网有限责任公司 | Direct-current ring main unit circuit structure and use method |
| CN111239601A (en) * | 2020-03-05 | 2020-06-05 | 湖北省电力勘测设计院有限公司 | Method for detecting double-break bus isolating switch in 220 KV power transformation combined electrical equipment |
| WO2021175107A1 (en) * | 2020-03-05 | 2021-09-10 | 湖北省电力勘测设计院有限公司 | Testing method for double-fracture busbar disconnector in 220-kilovolt power transformation combined electrical device |
| CN111239601B (en) * | 2020-03-05 | 2022-01-25 | 湖北省电力勘测设计院有限公司 | Method for detecting double-break bus isolating switch in 220 KV power transformation combined electrical equipment |
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|---|---|
| CN107482523B (en) | 2019-11-22 |
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