CN109245291A - The maintenance safety measure method for arranging of the double sectional power supply systems of substation's double-bus - Google Patents
The maintenance safety measure method for arranging of the double sectional power supply systems of substation's double-bus Download PDFInfo
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- CN109245291A CN109245291A CN201811358617.5A CN201811358617A CN109245291A CN 109245291 A CN109245291 A CN 109245291A CN 201811358617 A CN201811358617 A CN 201811358617A CN 109245291 A CN109245291 A CN 109245291A
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- awaiting overhaul
- power supply
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a kind of maintenance safety measure method for arranging of the double sectional power supply systems of substation's double-bus.The method comprising the steps of: 11) carrying out cyclization and the operation of falling bus to bus；12) low-voltage alternating current power supply is switched over；13) each switchgear of Awaiting Overhaul bus is switched to hot stand-by duty；14) each switchgear is switched to cold standby state；15) voltage transformer is switched to cold standby state；16) station change is switched to cold standby state；17) the installing operation being grounded；18) DC power supply panel is disconnected, the DC control supply breaker and power switch breaker of Awaiting Overhaul bus are removed；19) low-voltage alternating-current screen is disconnected, the Technologies for AC Low Voltage Circuit Breakers of each switchgear of Awaiting Overhaul bus is removed.The maintenance safety measure method for arranging of power supply system of the invention has grid switching operation rapidly and efficiently, and maintenance safety measure arrangement is complete complete, can be effectively prevented from back brake maloperation and the generation of personal injury accident, it is ensured that the safety of overhaul of the equipments operation.
Description
Technical field
The present invention relates to the double sectional power supply systems of substation's power supply technique field more particularly to a kind of substation's double-bus
Maintenance safety measure method for arranging.
Background technique
Fig. 1 is a kind of primary system principle of the double sectional power supply systems of substation's double-bus for prior art that example provides
Schematic diagram.As shown in Fig. 1, the double sectional power supply systems of substation's double-bus share I, II, III and IV 4 sections of buses, and substation exists
When normal power supply is run, 1# main transformer connects I sections of buses by 3501 breakers and respectively feeds out route, and 2# main transformer passes through 3502 open circuits
Device connects II section of bus and respectively feeds out route, and 3# main transformer connects III section of bus by 3503 breakers and respectively feeds out route, 4# master
Accommodation crosses 3504 breakers and connects IV section of bus and respectively feed out route, and I section of voltage transformer connects I section of bus, and II section of voltage is mutual
Sensor connects II section of bus, and the station 1# crosses its high-pressure side disconnecting switch with accommodation and is separately connected I section of bus and II section of bus, III section of electricity
Mutual inductor (not shown) is pressed to connect III section of bus, IV section of voltage transformer (not shown) connects IV section of bus, the station 2#
Its high-pressure side disconnecting switch, which is crossed, with accommodation is separately connected III section of bus and IV section of bus, I section of bus and III section of bus section
3500E, II section of bus and IV section of bus section 3500F, I section of bus and II section of bus mother 3500A, III section of bus and IV section of mother
Line mother 3500B, 3500B are in hot stand-by duty.
The annual spring and autumn of substation requires to carry out distribution equipment electrical cleaning maintenance, due to existing substation
The system structure of the double sectional power supply systems of double-bus is complicated, and when overhaul of the equipments, grid switching operation amount is big, and safe operation risk is high, inspection
Repair that safety measure arrangement is many and diverse, and anti-power transmission or the position that may be sent a telegram here are more, are easy to happen maloperation, it is safe to jeopardize service personnel,
Even cause personal injury accidents.Therefore, it is necessary to provide, a kind of back brake is accurate, is able to achieve the safety measure fast and safely overhauled
Method for arranging.
Summary of the invention
To solve above-mentioned the technical problems existing in the prior art, the present invention provides a kind of double segmentation confessions of substation's double-bus
The maintenance safety measure method for arranging of electric system.
The invention discloses a kind of maintenance safety measure method for arranging of the double sectional power supply systems of substation's double-bus thus.
This method comprises:
11) Loop Closing Operation is carried out to I section, II section, III section and IV section four sections of bus, two sections of Awaiting Overhaul bus loads is adjusted to
By other two sections of bussed supplies；
12) low-voltage alternating current power supply is switched over, the low-voltage alternating-current screen of power supply system is connected by the Awaiting Overhaul bus
Station with become for stand in low-voltage load switch to by another station become power supply, disconnect in the low-voltage alternating-current screen with it is described to
The alternating current inlet wire breaker that the station of maintenance bus connection is connected with low pressure side；
13) each switchgear of the Awaiting Overhaul bus is switched to hot stand-by duty by operating status；
14) each switchgear of the Awaiting Overhaul bus is switched to cold standby state by hot stand-by duty；
15) voltage transformer that the Awaiting Overhaul bus connects is switched to cold standby state by hot stand-by duty；
16) station of Awaiting Overhaul bus connection is switched to cold standby state by hot stand-by duty with change；
17) installing being grounded to the power supply system of the Awaiting Overhaul operates；
18) DC power supply panel is disconnected, DC control supply breaker and the power switch open circuit of the Awaiting Overhaul bus are gone
Device；
19) low-voltage alternating-current screen is disconnected, the Technologies for AC Low Voltage Circuit Breakers of each switchgear of the Awaiting Overhaul bus is removed.
Further, in the maintenance safety measure method for arranging of the double sectional power supply systems of substation's double-bus, institute
State step 12 bus cyclization fall load gap execute.
Further, in the maintenance safety measure method for arranging of the double sectional power supply systems of substation's double-bus, institute
Stating step 13 further includes examining respectively before each switchgear of the Awaiting Overhaul bus is switched to hot stand-by duty by operating status
It looks into and confirms that each outgoing of the Awaiting Overhaul bus is zero load.
Further, in the maintenance safety measure method for arranging of the double sectional power supply systems of substation's double-bus, institute
It states in step 13, it includes: successively to disconnect that each switchgear of the Awaiting Overhaul bus, which is switched to hot stand-by duty by operating status,
The breaker of each outgoing switchgear of the Awaiting Overhaul bus disconnects each main transformer height of the Awaiting Overhaul bus connection
Press two sides breaker, successively disconnect I section of bus and III section of bus section 3500E, II section of bus and IV section of bus section 3500F,
And the breaker of the mother of the Awaiting Overhaul bus.
Further, in the maintenance safety measure method for arranging of the double sectional power supply systems of substation's double-bus, institute
State in step 14, by each switchgear of the Awaiting Overhaul bus by hot stand-by duty be switched to cold standby state include: according to
- 3, -1 and -2 disconnecting switch of the secondary each outgoing switchgear for disconnecting the Awaiting Overhaul bus, it is female to disconnect the Awaiting Overhaul
Each disconnecting switch of each main transformer height voltage breaker two sides of line connection disconnects I section of bus and III section of bus point
Section 3500E, II section of bus and IV section of bus section 3500F and the Awaiting Overhaul bus the mother it is each every
Leave pass.
Further, in the maintenance safety measure method for arranging of the double sectional power supply systems of substation's double-bus, institute
It states in step 15, the voltage transformer that the Awaiting Overhaul bus connects, which is switched to cold standby state by hot stand-by duty, includes:
The disconnecting switch of each voltage transformer of the Awaiting Overhaul bus connection is disconnected, and removes each voltage transformer height
Press the fuse of two sides.
Further, in the maintenance safety measure method for arranging of the double sectional power supply systems of substation's double-bus, institute
It states in step 16, the station of Awaiting Overhaul bus connection, which is switched to cold standby state by hot stand-by duty with change, includes:
The station for disconnecting the Awaiting Overhaul bus connection becomes each disconnecting switch and each wire-outgoing breaker of its low-pressure side, and removes institute
The station for stating the connection of Awaiting Overhaul bus becomes on high-tension side fuse.
Further, in the maintenance safety measure method for arranging of the double sectional power supply systems of substation's double-bus, institute
It states in step 17, the installing operation being grounded to the power supply system of the Awaiting Overhaul includes: female in the Awaiting Overhaul respectively
One group of ground wire is respectively installed in -3 disconnecting switch line load sides of each outgoing switchgear of line, female in the Awaiting Overhaul respectively
One group of ground wire is respectively installed on line, respectively installs one at each main transformer low-pressure side bus bridge of Awaiting Overhaul bus connection respectively
Group ground wire is connected at bus bar between I section of bus and -1 disconnecting switch and breaker of III section of bus section 3500E and is installed
One group of ground wire is connected at bus bar between II section of bus and -1 disconnecting switch and breaker of IV section of bus section 3500F and is filled
If one group of ground wire, one group of ground wire is respectively installed with low pressure two sides are got higher at the station of Awaiting Overhaul bus connection respectively.
Further, in the maintenance safety measure method for arranging of the double sectional power supply systems of substation's double-bus, institute
It states in step 17, the position that ground line is installed on the Awaiting Overhaul bus is the mutual induction of voltage of Awaiting Overhaul bus connection
The source side of the disconnecting switch of device.
Further, in the maintenance safety measure method for arranging of the double sectional power supply systems of substation's double-bus, institute
State step 17 further include before the installing operation being grounded to the power supply system, check confirm in the power supply system to
Install ground line position whether no-voltage.
The major advantage of technical solution of the present invention is as follows:
The maintenance safety measure method for arranging of the double sectional power supply systems of substation's double-bus provided by the invention, grid switching operation
Rapidly and efficiently, maintenance safety measure arrangement is complete complete, can be effectively prevented from back brake maloperation and the generation of personal injury accident,
Ensuring the safety of overhaul of the equipments operation, overhaul efficiency is high, and it is easy to operate, securely and reliably.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the embodiment of the present invention, constitutes of the invention one
Point, the illustrative embodiments of the present invention and their descriptions are used to explain the present invention, does not constitute improper limitations of the present invention.Attached
In figure:
Fig. 1 is a kind of primary system principle of the double sectional power supply systems of substation's double-bus for prior art that example provides
Schematic diagram；
Fig. 2 is the maintenance safety measure cloth of the double sectional power supply systems of substation's double-bus provided by one embodiment of the present invention
Set the flow chart of method.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the specific embodiment of the invention and
Technical solution of the present invention is clearly and completely described in corresponding attached drawing.Obviously, described embodiment is only of the invention
A part of the embodiment, instead of all the embodiments.Based on the embodiment of the present invention, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
Below in conjunction with attached drawing, the technical solution of embodiment that the present invention will be described in detail offer.
As shown in Fig. 1, the double sectional power supply systems of substation's double-bus share I, II, III and IV 4 sections of buses, substation
In normal power supply operation, 1# main transformer connects I sections of buses by 3501 breakers and respectively feeds out route, and 2# main transformer is disconnected by 3502
Road device connects II section of bus and respectively feeds out route, and 3# main transformer connects III section of bus by 3503 breakers and respectively feeds out route, 4#
Main transformer connects IV section of bus by 3504 breakers and respectively feeds out route, and I section of voltage transformer connects I section of bus, II section of voltage
Mutual inductor connects II section of bus, and the station 1# is separately connected I section of bus and II section of bus with flexible its high-pressure side disconnecting switch of mistake, and III section
Voltage transformer (not shown) connects III section of bus, and IV section of voltage transformer (not shown) connects IV section of bus, 2#
Its high-pressure side disconnecting switch with accommodation of standing is separately connected III section of bus and IV section of bus, I section of bus and III section of bus section
3500E, II section of bus and IV section of bus section 3500F, I section of bus and II section of bus mother 3500A, III section of bus and IV section of mother
Line mother 3500B, 3500B are in hot stand-by duty.In diagram, -1, -2 and -3 are represented as the matched isolation of breaker institute
The number of switch.
As shown in Fig. 2, the embodiment of the invention provides a kind of maintenance peaces of the double sectional power supply systems of substation's double-bus
Full measure method for arranging, the maintenance safety measure method for arranging include the following steps:
11) Loop Closing Operation is carried out to I section, II section, III section and IV section four sections of bus, two sections of Awaiting Overhaul bus loads is adjusted to
By other two sections of bussed supplies；
12) low-voltage alternating current power supply is switched over, the station that the low-voltage alternating-current screen of power supply system is connected by Awaiting Overhaul bus
It is powered with becoming to switch to be become by another station for low-voltage load in standing, disconnects connecting in low-voltage alternating-current screen with Awaiting Overhaul bus
The alternating current inlet wire breaker that is connected with low pressure side of station；
13) each switchgear of Awaiting Overhaul bus is switched to hot stand-by duty by operating status；
14) each switchgear of Awaiting Overhaul bus is switched to cold standby state by hot stand-by duty；
15) voltage transformer that Awaiting Overhaul bus connects is switched to cold standby state by hot stand-by duty；
16) station that Awaiting Overhaul bus connects is switched to cold standby state by hot stand-by duty with change；
17) installing being grounded to the power supply system of Awaiting Overhaul operates；
18) DC power supply panel is disconnected, the DC control supply breaker and power switch breaker of Awaiting Overhaul bus are removed；
19) low-voltage alternating-current screen is disconnected, the Technologies for AC Low Voltage Circuit Breakers of each switchgear of Awaiting Overhaul bus is removed.
More specifically, the maintenance safety measure method for arranging of the double segmentations of substation's double-bus may include steps of:
21) Loop Closing Operation is carried out to I section, II section, III section and IV section four sections of bus, two sections of Awaiting Overhaul bus loads is adjusted to
By other two sections of bussed supplies；
22) gap of load is fallen in bus cyclization, low-voltage alternating current power supply is switched over, by the low-voltage alternating-current of power supply system
The station that screen is connected by Awaiting Overhaul bus, which is switched to change for low-voltage load in standing, becomes power supply, disconnection low-voltage alternating-current by another station
The alternating current inlet wire breaker that the station connecting with Awaiting Overhaul bus in screen is connected with low pressure side；
23) check respectively for confirmation Awaiting Overhaul bus each outgoing it is zero load after, successively disconnect each of Awaiting Overhaul bus
The breaker of outgoing switchgear disconnects each main transformer high-low pressure two sides breaker of Awaiting Overhaul bus connection, successively disconnects I section of mother
The open circuit of the mother of line and III section of bus section 3500E, II section of bus and IV section of bus section 3500F and Awaiting Overhaul bus
Device, so that each switchgear of Awaiting Overhaul bus is switched to hot stand-by duty by operating status；
24) -3, -1 and -2 disconnecting switch for successively disconnecting each outgoing switchgear of Awaiting Overhaul bus, it is female to disconnect Awaiting Overhaul
Each disconnecting switch of each main transformer height voltage breaker two sides of line connection, disconnect I section of bus and III section of bus section 3500E,
Each disconnecting switch of the mother of II section of bus and IV section of bus section 3500F and Awaiting Overhaul bus, thus by Awaiting Overhaul mother
Each switchgear of line is switched to cold standby state by hot stand-by duty；
25) disconnecting switch of each voltage transformer of Awaiting Overhaul bus connection is disconnected, and removes each voltage transformer
The fuse of high-low pressure two sides, so that the voltage transformer that Awaiting Overhaul bus connects is switched to cold standby shape by hot stand-by duty
State；
26) station for disconnecting the connection of Awaiting Overhaul bus becomes each disconnecting switch and each wire-outgoing breaker of its low-pressure side, and takes
The station high-pressure side fuse become of lower Awaiting Overhaul bus connection, so that the station that Awaiting Overhaul bus is connected becomes by stand-by heat shape
State is switched to cold standby state；
27) check whether no-voltage exists respectively after confirming no-voltage for the position of ground line to be installed in confirmation power supply system
One group of ground wire is respectively installed in -3 disconnecting switch line load sides of each outgoing switchgear of Awaiting Overhaul bus, respectively in Awaiting Overhaul mother
One group of ground wire is respectively installed on line, respectively installs one group of ground wire at each main transformer low-pressure side bus bridge of Awaiting Overhaul bus connection respectively,
It is connected between I section of bus and -1 disconnecting switch and breaker of III section of bus section 3500E and installs one group of ground wire at bus bar,
It is connected between II section of bus and -1 disconnecting switch and breaker of IV section of bus section 3500F and installs one group of ground wire at bus bar, point
One group of ground wire is not installed respectively with low pressure two sides are got higher at the station of Awaiting Overhaul bus connection；
28) DC power supply panel is disconnected, the DC control supply breaker and power switch breaker of Awaiting Overhaul bus are removed；
29) low-voltage alternating-current screen is disconnected, the Technologies for AC Low Voltage Circuit Breakers of each switchgear of Awaiting Overhaul bus is removed.
Wherein, in step 27, the position that ground line is installed on Awaiting Overhaul bus can be the voltage of Awaiting Overhaul bus connection
The source side of the disconnecting switch of mutual inductor.
Below to carry out the electricity that has a power failure to I section in the double sectional power supply systems of substation's double-bus and II section of two sections of bus equipment
For gas cleanup maintenance, the maintenance safety of the double sectional power supply systems of substation's double-bus provided in an embodiment of the present invention is illustrated
Measure method for arranging.
Specifically, when carrying out interruption maintenance to I section in power supply system and II section of two sections of bus equipment, maintenance safety measure
Method for arranging includes the following steps:
31) cyclization is carried out to I section of bus and III section of bus, I section of bus load is adjusted to by III section of bussed supply, by II section
Bus and IV section of bus carry out cyclization, and II section of bus load is adjusted to by IV section of bussed supply；
32) gap of load is fallen in bus cyclization, low-voltage alternating current power supply is switched over, by the low-voltage alternating-current of power supply system
Screen is switched to change for low-voltage load in standing by the station 1# of I section of bus and II section of bus connection to be connected by III section of bus and IV section of bus
The station 2# connect is then disconnected the 1# that connect with I section of bus and II section of bus in low-voltage alternating-current screen again and is stood with being lower with power supply is become
Press the 1# alternating current inlet wire breaker of side connection；
33) after checking that each outgoing of I section of bus of confirmation and II section of bus is zero load, I section of bus and II is successively disconnected
The breaker of each outgoing switchgear of section bus disconnects the height of 1# main transformer and 2# main transformer that I section of bus and II section of bus connect
Low pressure two sides breaker successively disconnects I section of bus and III section of bus section 3500E, II section of bus and IV section of bus section
The breaker of the mother 3500A of 3500F and I section of bus and II section of bus, then checks respectively for whether confirmation breaker has broken
It opens.
34) -3, -1 and -2 disconnecting switch for successively disconnecting each outgoing switchgear of I section of bus and II section of bus, disconnect I
- 1, -2 and -3 disconnecting switch of 1# main transformer and 2# main transformer height voltage breaker two sides that section bus and II section of bus connect, disconnect I
- 1 and -2 disconnecting switch of section bus and III section of bus section 3500E, disconnect-the 1 of II section of bus and IV section of bus section 3500F
And -2 disconnecting switch, disconnect -1 and -2 disconnecting switch of the mother 3500A of I section of bus and II section of bus；
35) the 3581-1 disconnecting switch for disconnecting I section of voltage transformer of I section of bus connection disconnects II section of bus connection
The 3582-1 disconnecting switch of II section of voltage transformer successively removes I section of voltage transformer and II section of voltage transformer height respectively
Two sides fuse is pressed, to prevent secondary side low tension to the anti-power transmission of voltage transformer primary side；
36) station the 1# 3591-1 and 3591-2 disconnecting switch become for disconnecting I section of bus and II section of bus connection, disconnects 1#
It stands with each wire-outgoing breaker of low pressure side, removes the station 1# with high-pressure side fuse is become, to prevent the anti-power transmission of low-voltage AC；
37) check confirm ground line to be installed position whether no-voltage, identify confirmation no-voltage after, respectively in I section of mother
One group of ground wire is respectively installed in -3 disconnecting switch line load sides of each outgoing switchgear of line and II section of bus, respectively in I section of mother
One group of ground wire is respectively installed on line and II section of bus, respectively in I section of bus and the 1# main transformer and 2# main transformer low pressure of II section of bus connection
One group of ground wire is respectively installed at side bus bridge, is connected between I section of bus and -1 disconnecting switch and breaker of III section of bus section 3500E
One group of ground wire of installing at bus bar is connect, is connected between II section of bus and -1 disconnecting switch and breaker of IV section of bus section 3500F
One group of ground wire of installing is connect at bus bar, is respectively installed at the station 1# of I section of bus and II section of bus connection with getting higher low pressure two sides respectively
One group of ground wire；
38) DC power supply panel is disconnected, goes the DC control supply breaker of I section of bus and II section of bus and power switch disconnected
Road device；
39) low-voltage alternating-current screen is disconnected, the Technologies for AC Low Voltage Circuit Breakers of each switchgear of I section of bus and II section of bus is removed.
The maintenance safety measure method for arranging of the double sectional power supply systems of substation's double-bus provided in an embodiment of the present invention,
Lock operates rapidly and efficiently, and maintenance safety measure arrangement is complete complete, can be effectively prevented from back brake maloperation and personal injury accident
Generation, it is ensured that the safety of overhaul of the equipments operation, overhaul efficiency are high, easy to operate, securely and reliably.
It should be noted that, in this document, the relational terms of such as " first " and " second " or the like are used merely to one
A entity or operation with another entity or operate distinguish, without necessarily requiring or implying these entities or operation it
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant are intended to
Cover non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or setting
Standby intrinsic element.In addition, placement shape of "front", "rear", "left", "right", "upper", the "lower" herein to be indicated in attached drawing
State is reference.
Finally, it should be noted that the above examples are only used to illustrate the technical scheme of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. a kind of maintenance safety measure method for arranging of the double sectional power supply systems of substation's double-bus, which is characterized in that the side
Method includes:
11) Loop Closing Operation is carried out to I section, II section, III section and IV section four sections of bus, two sections of Awaiting Overhaul bus loads is adjusted to by another
Outer two sections of bussed supplies；
12) low-voltage alternating current power supply is switched over, the station that the low-voltage alternating-current screen of power supply system is connected by the Awaiting Overhaul bus
With become for stand in low-voltage load switch to by another station become power supply, disconnect in the low-voltage alternating-current screen with the Awaiting Overhaul
The alternating current inlet wire breaker that the station of bus connection is connected with low pressure side；
13) each switchgear of the Awaiting Overhaul bus is switched to hot stand-by duty by operating status；
14) each switchgear of the Awaiting Overhaul bus is switched to cold standby state by hot stand-by duty；
15) voltage transformer that the Awaiting Overhaul bus connects is switched to cold standby state by hot stand-by duty；
16) station of Awaiting Overhaul bus connection is switched to cold standby state by hot stand-by duty with change；
17) installing being grounded to the power supply system of the Awaiting Overhaul operates；
18) DC power supply panel is disconnected, the DC control supply breaker and power switch breaker of the Awaiting Overhaul bus are removed；
19) low-voltage alternating-current screen is disconnected, the Technologies for AC Low Voltage Circuit Breakers of each switchgear of the Awaiting Overhaul bus is removed.
2. the maintenance safety measure method for arranging of the double sectional power supply systems of substation's double-bus according to claim 1,
Be characterized in that, the step 12 bus cyclization fall load gap execute.
3. the maintenance safety measure method for arranging of the double sectional power supply systems of substation's double-bus according to claim 2,
It is characterized in that, the step 13 further includes that each switchgear of the Awaiting Overhaul bus is being switched to stand-by heat shape by operating status
Before state, check respectively for confirming that each outgoing of the Awaiting Overhaul bus is zero load.
4. the maintenance safety measure method for arranging of the double sectional power supply systems of substation's double-bus according to claim 3,
It is characterized in that, in the step 13, each switchgear of the Awaiting Overhaul bus is switched to hot stand-by duty packet by operating status
It includes: successively disconnecting the breaker of each outgoing switchgear of the Awaiting Overhaul bus, disconnect the Awaiting Overhaul bus connection
Each main transformer high-low pressure two sides breaker, successively disconnect I section of bus and III section of bus section 3500E, II section of bus and IV section of mother
Line is segmented the breaker of the mother of 3500F and the Awaiting Overhaul bus.
5. the maintenance safety measure method for arranging of the double sectional power supply systems of substation's double-bus according to claim 4,
It is characterized in that, in the step 14, each switchgear of the Awaiting Overhaul bus is switched to cold standby by hot stand-by duty
State includes: successively to disconnect -3, -1 and -2 disconnecting switch of each outgoing switchgear of the Awaiting Overhaul bus, disconnects institute
The each disconnecting switch for stating each main transformer height voltage breaker two sides of Awaiting Overhaul bus connection, disconnect I section of bus and
The mother of III section of bus section 3500E, II section of bus and IV section of bus section 3500F and the Awaiting Overhaul bus
Each disconnecting switch of connection.
6. the maintenance safety measure method for arranging of the double sectional power supply systems of substation's double-bus according to claim 5,
It is characterized in that, in the step 15, the voltage transformer that the Awaiting Overhaul bus connects is switched to cold standby by hot stand-by duty
It include: to disconnect the disconnecting switch of each voltage transformer of the Awaiting Overhaul bus connection, and remove each electricity with state
Press the fuse of mutual inductor high-low pressure two sides.
7. the maintenance safety measure method for arranging of the double sectional power supply systems of substation's double-bus according to claim 6,
It is characterized in that, in the step 16, the station of Awaiting Overhaul bus connection is switched to cold standby by hot stand-by duty with change
It include: to disconnect each disconnecting switch of station change and each outlet open circuit of its low-pressure side of the Awaiting Overhaul bus connection with state
Device, and the high-pressure side fuse that the station for removing the Awaiting Overhaul bus connection becomes.
8. the maintenance safety measure method for arranging of the double sectional power supply systems of substation's double-bus according to claim 1 or claim 7,
It is characterized in that, the installing operation being grounded to the power supply system of the Awaiting Overhaul includes: to exist respectively in the step 17
One group of ground wire is respectively installed in -3 disconnecting switch line load sides of each outgoing switchgear of the Awaiting Overhaul bus, exists respectively
One group of ground wire is respectively installed on the Awaiting Overhaul bus, respectively in each main transformer low-pressure side bus of Awaiting Overhaul bus connection
One group of ground wire is respectively installed at bridge, is connected between I section of bus and -1 disconnecting switch and breaker of III section of bus section 3500E
One group of ground wire is installed at bus bar, between II section of bus and -1 disconnecting switch and breaker of IV section of bus section 3500F
It connects and installs one group of ground wire at bus bar, respectively installed at the station of Awaiting Overhaul bus connection with low pressure two sides are got higher respectively
One group of ground wire.
9. the maintenance safety measure method for arranging of the double sectional power supply systems of substation's double-bus according to claim 8,
It is characterized in that, in the step 17, the position that ground line is installed on the Awaiting Overhaul bus is Awaiting Overhaul bus connection
The source side of the disconnecting switch of the voltage transformer.
10. the maintenance safety measure method for arranging of the double sectional power supply systems of substation's double-bus according to claim 9,
It is characterized in that, the step 17 further includes checking described in confirmation before the installing operation being grounded to the power supply system
In power supply system the position of ground line to be installed whether no-voltage.
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