CN103872682A - Switching station feeder line automatic protection method - Google Patents

Switching station feeder line automatic protection method Download PDF

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Publication number
CN103872682A
CN103872682A CN201410122548.3A CN201410122548A CN103872682A CN 103872682 A CN103872682 A CN 103872682A CN 201410122548 A CN201410122548 A CN 201410122548A CN 103872682 A CN103872682 A CN 103872682A
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China
Prior art keywords
switchyard
station
switch
activating device
backup auto
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CN201410122548.3A
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Inventor
杨光
何维国
张可
施永梅
顾黎强
孙阳盛
卫春
张钻
张利明
郭睿
徐晓芳
邱名义
谢邦鹏
刘瑾
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State Grid Shanghai Electric Power Co Ltd
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State Grid Shanghai Electric Power Co Ltd
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Priority to CN201410122548.3A priority Critical patent/CN103872682A/en
Publication of CN103872682A publication Critical patent/CN103872682A/en
Pending legal-status Critical Current

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Abstract

Provided is a switching station feeder line automatic protection method. If any one of two inlet wires of a switching station is in a power failure and is powered off, an automatic bus transfer device in the station controls a section switch of the switching station to be switched on, and a power losing bus in the switching station is powered by the section switch. If the two inlet wires in the switching station are both in the power failure and are powered off, the automatic bus transfer device in the station controls the section switch of the switching station to be switched off, the automatic bus transfer devices in the switching station and adjacent stations control a switching station adjacent to the failure switching station to supply power to a first bus and a second bus in the failure switching station respectively through connecting lines, and the failure switching station is powered on again. The method is flexible in operating mode and high in reliability, the centralized power supply mode is adopted by the switching station, operation and maintenance management is facilitated, distribution network failures can be removed fast, non-failure sections can be powered on fast, the power failure time is reduced, power supply reliability can be improved conveniently, and the method is suitable for areas with centralized loads and high requirements for reliability.

Description

Switchyard feeder line automatic protecting method
Technical field
The present invention relates to a kind of switchyard feeder line automatic protecting method.
Background technology
Shanghai City is the first city of China, and one of four municipality directly under the central government are China's economy, finance, trade and shipping centre.2012, Shanghai City GCP reached 2.01 trillion RMB, 11 of whole world ranks.GCP and per capita disposable income all occupy national each provinces and regions and municipality directly under the Central Government first place per capita.Shanghai is in the development key period of " industrial transformation " at present, puts forth effort to make that " four " center "-international economy centers, international financial center, International Trade Center, International shipping center, this just has higher requirement to whole city's power supply capacity level.
1210.41 square kilometres of Pudong New Area, Shanghai whole district areas, determine to have gone through development in more than 20 years since " Pudong's great development " key areas such as built Golden Bridge, the national development zone of Zhangjiang, Waigaoqiao Bonded Zone, Lujiazui Financial and Trade Zone for the Party Central Committee, State Council from nineteen ninety.On July 3rd, 2013, " China (Shanghai) free trade trial zone " is granted, settles coastal 28 square kilometres of Pudong New District, indicates the ground zero of Shanghai Metallurgical Industry.As whole city's maximum, most active district, Pudong New District is comprising that all many-sides such as economic development, industrial transformation lead the whole city.
The construction scope of Pudong's core space power distribution network is the riverine core space of Pudong's Huangpu River, and to Huangpu River, north, to Huangpu River, to the east of Pudong South Road, reaches credit Hua Lu in the south, takes up an area approximately 10 square kilometres.Naturally extending of the rapid growth of this core area power load and distribution line, has unavoidably caused the problems such as blur boundary, crossing elimination, roundabout power supply, affects power supply reliability and line loss lean.
Represent the international Advanced Cities such as the Singapore, Tokyo, Hong Kong, Paris of world-class level although the historical power supply reliability of Pudong's core space, at home in higher level, is compared, gap is larger.2013, State Grid Corporation of China promulgated " distribution network planning designing technique guide rule ", proposed large size city nucleus to be defined as A+ region, integrated with world-class level, realized power supply reliability higher than 99.999% developing goal.Therefore, no matter be the power supply service level in international metropolis's core city, or the developing goal of State Grid Corporation of China's technology guide rule proposition, all Pudong's core space is proposed to higher power supply reliability requirement.
Aspect 10kV medium voltage distribution network grid structure, core space is compared Guo Wang company, Shanghai company Guidelines, belongs to lack of standardization, atypical phenomenon and mainly contains three kinds:
1, overhead wire segmentation capacity is bigger than normal, gets in touch with on the low side;
2, do not meet current techniques principle according to the III type power distribution station of old standard construction;
3, there is atypia wiring in overhead wire.
And by the international advanced metropolis of contrast distribution net work structure, as Tokyo, Singapore, Hong Kong, Paris etc., the deficiency that sums up the current rack existence of core space comprises:
1, to share rate higher at part transformer station interval;
2, on switchyard, level power supply, all from the different buses of same transformer station, belongs to secondary duplicate supply;
3, on most of looped network, level power supply, from the different buses of same transformer station (switchyard), belongs to secondary duplicate supply;
4, switchyard total number is on the low side, 10kV interval anxiety;
5, exist large looped network to overlap little ring network structure, power distribution automation is disposed and brought technical difficulty;
6, rack is laterally got in touch with weakness, and rack load transfer ability is limited.
For solving above-mentioned power distribution network rack aspect existing problems, core space need be strengthened distribution grid structure, optimizes the mode of connection and control method, reduce circuit Rate of average load, strengthen load transfer ability, study and define normalized distribution Connection Mode, and according to unified standard, high-quality construction.
Summary of the invention
The invention provides a kind of switchyard feeder line automatic protecting method, power supply reliability is high, and switchyard centrally connected power supply pattern, is convenient to operation management.
In order to achieve the above object, the invention provides a kind of switchyard feeder line automatic protecting method, if switchyard two back into the arbitrary inlet wire generation power failure dead electricity in line, the block switch closure at backup auto-activating device control switch station in standing, the dead electricity bus in switchyard is powered by block switch;
If all there is power failure dead electricity back into line in two of switchyard, in standing, the block switch at expansion backup auto-activating device control switch station disconnects, in standing the switchyard adjacent with breakdown switch station with neighboring station expansion backup auto-activating device control by interconnection respectively to the first paragraph bus in breakdown switch station and second segment bussed supply, the power supply at recovery breakdown switch station.
If switchyard two back into the arbitrary inlet wire generation power failure dead electricity in line, the action of the equipment for protecting optical fibre longitudinal difference on inlet wire, disconnects the circuit breaker on inlet wire, and longitudinal difference protection trip signal is informed to backup auto-activating device and expansion backup auto-activating device in station.
If backup auto-activating device receives the longitudinal difference protection trip signal that equipment for protecting optical fibre longitudinal difference sends, by having the judgement with no pressure of pressure, the block switch closure at control switch station.
If two of switchyard, back into line, power failure dead electricity all occurs, the action of the equipment for protecting optical fibre longitudinal difference on inlet wire, disconnects the circuit breaker on inlet wire, and longitudinal difference protection trip signal is informed in station and neighboring station backup auto-activating device and expansion backup auto-activating device.
In if stand, expansion backup auto-activating device receives the longitudinal difference protection trip signal that equipment for protecting optical fibre longitudinal difference sends; the block switch at control switch station disconnects, and the protection actuating signal of autotomying of block switch is informed in station by communication network and neighboring station expansion backup auto-activating device.
In if stand, receive longitudinal difference protection trip signal and the protection actuating signal of autotomying with neighboring station expansion backup auto-activating device; by there being the judgement with no pressure of pressure; control the switchyard adjacent with breakdown switch station by interconnection respectively to the first paragraph bus in breakdown switch station and second segment bussed supply, recover the power supply at breakdown switch station.
In standing and neighboring station expand and often open stand-by heat interconnection switch closure on the interconnection that backup auto-activating device control is connected with breakdown switch station, adjacent switch station respectively to the first paragraph bus in breakdown switch station and second segment bussed supply, is recovered the power supply at breakdown switch station by interconnection.
If two of switchyard carries out power maintenance back into the arbitrary inlet wire in line, the block switch closure at backup auto-activating device control switch station in station, the dead electricity bus in switchyard is powered by block switch;
If two of switchyard carries out power maintenance back into line simultaneously, in station and the block switch at neighboring station expansion backup auto-activating device control switch station disconnect, controls the switchyard adjacent with switchyard by interconnection respectively to first paragraph bus and second segment bussed supply in switchyard.
When two of switchyard carries out power maintenance back into the arbitrary inlet wire in line, switchyard inlet wire generation power failure, in station the adjacent switchyard of backup auto-activating device control by interconnection first paragraph bus and the second segment bussed supply to switchyard.
If when two of switchyard carries out power maintenance back into line simultaneously, switchyard inlet wire generation power failure, the block switch closure at expansion backup auto-activating device control switch station in station, restores electricity.
Operational mode of the present invention is flexible; reliability is high; switchyard centrally connected power supply pattern; be convenient to operation management; switchyard inlet wire and interconnection configuration optical-fiber longitudinal difference protection; switchyard busbar sectional izing switch and tie switches allocation backup auto-activating device and expansion backup auto-activating device; can accelerate Distribution Network Failure eliminates; and non-fault section power supply; reduce the fault outage time; contribute to improve power supply reliability, be applicable to press in transformer station interval deficiency, electric outgoing line corridor is limited, load is concentrated and reliability requirement is high region.
Accompanying drawing explanation
Fig. 1 is circuit structure block diagram of the present invention.
Fig. 2 is the reduced graph of switchyard in the present invention.
Fig. 3 is the contact illustraton of model of switchyard in the present invention.
Fig. 4 is guard method flow chart of the present invention.
Embodiment
Following according to Fig. 1~Fig. 4, illustrate preferred embodiment of the present invention.
The invention provides a kind of Distribution Network Frame wiring construction, in this Distribution Network Frame wiring construction, comprise some switchyards and transformer station, described switchyard comprises first paragraph bus and the second segment bus of connecting by block switch, every section of bus connects respectively one back into line, some line and interconnections of returning back out, two of this switchyard connects respectively different transformer stations back into line, interconnection is set between switchyard, one end of interconnection connects the first paragraph bus of a switchyard, and the other end of interconnection connects the second segment bus of another switchyard.
On described interconnection, interconnection switch is set, described interconnection switch is separately positioned on the side and first paragraph bus one side that is connected another switchyard that connect a switchyard second segment bus, the interconnection switch of connecting valve station second segment bus one side is for often driving stand-by heat switch, and the interconnection switch of first paragraph bus one side at connecting valve station is normally closed switch.
On the inlet wire of described switchyard, equipment for protecting optical fibre longitudinal difference is set, in the time of circuit internal fault, can realizes quick-action completely, selectively, tripping faulty line fast, the current transformer that this equipment for protecting optical fibre longitudinal difference comprises series connection and circuit breaker.
Block switch on equipment for protecting optical fibre longitudinal difference, switchyard on the inlet wire of described switchyard is connected respectively backup auto-activating device and expansion backup auto-activating device with the interconnection switch on interconnection.
Described backup auto-activating device and expansion backup auto-activating device have distant place switching control function, and the power supply that non-fault dead electricity section can switch to other paths by backup auto-activating device is powered.
As shown in Figure 1, in figure, show switchyard A, switchyard B and switchyard C, and transformer station 1, transformer station 2, the annexation of transformer station 3 and transformer station 4, first paragraph bus and the second segment bus of switchyard A are connected by block switch QF11, first paragraph bus and the second segment bus of switchyard B are connected by block switch QF12, first paragraph bus and the second segment bus of switchyard C are connected by block switch QF13, the inlet wire JX1 that the first paragraph bus 11 of switchyard A connects connects the bus 22 of transformer station 1, the inlet wire JX2 that the second segment bus 12 of switchyard A connects connects the bus 23 of transformer station 2, the inlet wire that the first paragraph bus of switchyard B connects connects the bus 22 of transformer station 1, the inlet wire that the second segment bus of switchyard B connects connects the bus 23 of transformer station 2, the inlet wire that the first paragraph bus of switchyard C connects connects the bus of transformer station 4, the inlet wire that the second segment bus of switchyard C connects connects the bus of transformer station 3, between the first paragraph bus 11 of switchyard A and the second segment bus of switchyard C, interconnection 101 ' is set, the first paragraph bus 11 of connecting valve station, one end A of this interconnection 101 ', the second segment bus of other end connecting valve station C, between the second segment bus 12 of switchyard A and the first paragraph bus of switchyard B, interconnection 101 is set, the second segment bus of one section of connecting valve station A of this interconnection 101, the first paragraph bus of other end connecting valve station B, between the second segment bus of switchyard B and the first paragraph bus of switchyard C, interconnection 101 ' is set ', this interconnection 101 ' ' the second segment bus of connecting valve station, one end B, the first paragraph bus of other end connecting valve station C.
As shown in Figure 1, interconnection switch QF15 and interconnection switch QF16 are set on described interconnection 101, interconnection switch QF15 is arranged on connecting valve station A second segment bus 12 1 sides, and for often driving stand-by heat switch, interconnection switch QF16 is arranged on connecting valve station B first paragraph bus one side; Interconnection switch QF19 and interconnection switch QF14 are set on described interconnection 101 ', and interconnection switch QF19 is arranged on connecting valve station C second segment bus one side, and for often driving stand-by heat switch, interconnection switch QF14 is arranged on connecting valve station A first paragraph bus one side; Described interconnection 101 ' ' on interconnection switch QF17 and interconnection switch QF18 are set, interconnection switch QF17 is arranged on connecting valve station B second segment bus one side, interconnection switch QF18 is arranged on connecting valve station C first paragraph bus one side.
As shown in Figure 1, described switchyard A, on the inlet wire of switchyard B and switchyard C, equipment for protecting optical fibre longitudinal difference is set, the current transformer that this equipment for protecting optical fibre longitudinal difference comprises series connection and circuit breaker, the current transformer 102 that equipment for protecting optical fibre longitudinal difference on the inlet wire JX1 of switchyard A comprises series connection and circuit breaker Q F1 and circuit breaker Q F2, the current transformer that equipment for protecting optical fibre longitudinal difference on the inlet wire JX2 of switchyard A comprises series connection and circuit breaker Q F3 and circuit breaker Q F4, the current transformer that equipment for protecting optical fibre longitudinal difference on inlet wire on the first paragraph bus of switchyard B comprises series connection and circuit breaker Q F5 and circuit breaker Q F6, the current transformer that equipment for protecting optical fibre longitudinal difference on inlet wire on the second segment bus of switchyard B comprises series connection and circuit breaker Q F7 and circuit breaker Q F8, the current transformer that equipment for protecting optical fibre longitudinal difference on inlet wire on the first paragraph bus of switchyard C comprises series connection and circuit breaker Q F10, current transformer and circuit breaker Q F9 that equipment for protecting optical fibre longitudinal difference on inlet wire on switchyard C second segment bus comprises series connection.
Block switch on equipment for protecting optical fibre longitudinal difference, switchyard on the inlet wire of described switchyard is connected respectively backup auto-activating device and expansion backup auto-activating device (not shown in the diagram) with the interconnection switch on interconnection.
As shown in Figure 1, three switchyards are single mother partition mode of connection, each switchyard has respectively two to return back out line back into line six, each switchyard two back into line from two different substation, between switchyard, be furnished with and between switchyard, get in touch with special line, when normal operation, three contact special line one end switch are running status, and other end switch is hot stand-by duty.The grid structure of this distribution network belongs to two main confessions two supply power mode for subsequent use, and its operational mode is flexible, and reliability is high.
As shown in Figure 2; it is the simplified model at single switch station; take switchyard A as example; switchyard comprises the first paragraph bus 11 and the second segment bus 12 that connect by block switch QF11; first paragraph bus 11 connects inlet wire JX1 and outlet LL1; on inlet wire JX1, there is equipment for protecting optical fibre longitudinal difference (circuit breaker Q F2); on outlet LL1, there is normally closed interconnection switch QF14; second segment bus 12 connects inlet wire JX2 and outlet LL2; on inlet wire JX2, there is equipment for protecting optical fibre longitudinal difference (circuit breaker Q F4), on outlet LL2, have and often open stand-by heat interconnection switch QF15.
As shown in Figure 3, it is the contact illustraton of model of switchyard, switchyard D, switchyard E and switchyard F in figure, are shown, the second segment bus of switchyard D is by the first paragraph bus of interconnection connecting valve station E, the second segment bus of switchyard E passes through the first paragraph bus of interconnection connecting valve station F, the like.
Under normal operating mode, two inlet wires (power line) of switchyard are with respectively two sections of 10kV buses, 10kV block switch stand-by heat, interconnection modular design suggestion A station mono-section of bus of 10kV and C station bis-sections of bus contacts of 10kV (being convenient to modular design), A station bis-sections of buses of 10kV and mono-section of bus contact of B station 10kV, B station bis-sections of buses of 10kV and mono-section of bus contact of C station 10kV, as shown in Figure 1, form end to end circulus, agreement normal mode is that all interconnections are at bis-sections of bus bar side openings of 10kV, the i.e. interconnection switch of one section of bus bar side operation, the interconnection switch stand-by heat of two sections of bus bar side.
In the time that the inlet wire of switchyard breaks down; Distribution Network Frame wiring construction provided by the invention can be realized Fault Isolation and restore electricity, and the switchyard feeder line automatic protecting method of realizing based on Distribution Network Frame wiring construction provided by the invention can be achieved as follows four kinds of feed protections in situation:
1, switchyard single failure pattern:
Switchyard two back into the arbitrary inlet wire generation power failure dead electricity in line; equipment for protecting optical fibre longitudinal difference action on inlet wire; longitudinal difference protection trip signal is informed to backup auto-activating device in station; the block switch backup auto-activating device action of switchyard; block switch closure; dead electricity bus is powered by block switch, and interconnection backup auto-activating device is now as second level standby.
As shown in Figure 1, break down as example with the inlet wire JX1 of switchyard A, first paragraph bus 11 dead electricity of switchyard A, equipment for protecting optical fibre longitudinal difference action on inlet wire JX1, circuit breaker Q F1, QF2 tripping operation, and longitudinal difference protection trip signal is informed to backup auto-activating device in station, backup auto-activating device is received longitudinal difference protection trip signal, and by there being the judgement with no pressure of pressure, the closed block switch QF11 of protection action that autotomys, the first paragraph bussed supply of recovery switchyard A;
2, switchyard double faults pattern:
All there is power failure dead electricity back into line in two of switchyard, equipment for protecting optical fibre longitudinal difference action on inlet wire, longitudinal difference protection trip signal is informed in station and the expansion backup auto-activating device of neighboring station, expansion backup auto-activating device control segmentation backup auto-activating device tripping in standing, block switch disconnects, and longitudinal difference protection trip signal and the protection actuating signal of autotomying are informed in station by communication network and neighboring station expansion backup auto-activating device, when station in and neighboring station expand backup auto-activating device receive longitudinal difference protection trip signal and the protection actuating signal of autotomying, and by there being the judgement with no pressure of pressure, control the action of expansion backup auto-activating device, on the interconnection being connected with breakdown switch station, often open stand-by heat interconnection switch closure, adjacent switch station by interconnection respectively to the first paragraph bus in breakdown switch station and second segment bussed supply, recover the power supply at breakdown switch station.
As shown in Figure 1, inlet wire JX1 and inlet wire JX2 with switchyard A all break down as example, the first paragraph bus 11 of switchyard A and second segment bus 12 dead electricity simultaneously, equipment for protecting optical fibre longitudinal difference action on inlet wire JX1 and inlet wire JX2, circuit breaker Q F1, QF2, QF4, QF5 tripping operation, now full station has a power failure, longitudinal difference protection trip signal is informed to expansion backup auto-activating device in station, in standing, expansion backup auto-activating device control segmentation backup auto-activating device is autotomyed and is protected action tripping, block switch QF11 disconnects, longitudinal difference protection trip signal and the protection actuating signal of autotomying are informed in station by communication network and neighboring station expansion backup auto-activating device, in standing and neighboring station expansion backup auto-activating device receive longitudinal difference protection and the protection actuating signal of autotomying simultaneously, and by there being the judgement with no pressure of pressure, control interconnection switch QF15 and interconnection switch QF19 closure, switchyard C, switchyard B is respectively with a bus by interconnection, recover the power supply of switchyard A.
3, the single maintenance model of switchyard:
N-1 maintenance mode: the arbitrary incoming power maintenance of switchyard, power by this station block switch that closes, drop into interconnection backup auto-activating device.
Single fault mode under N-1 maintenance mode: while supposing a certain section of bus incoming power maintenance in A station, arrange A station block switch closure, now there is A station inlet wire operation troubles, A station interconnection LL2 backup auto-activating device will start, interconnection is often opened stand-by heat interconnection switch closure, and one section, station of B bus is by one, the two section of bus in contact tape A station.
4, switchyard two-way maintenance model:
N-2 maintenance mode: A station two-way incoming power overhauls simultaneously, and JX1 and JX2 stop labour simultaneously, and now, one section, two sections, station of A bus load is stood by C respectively and B station turns confession by interconnection between station.
If the fault outage under N-2 mode occurs for A station, restore electricity by the remote control A station block switch that closes.
Switchyard two-way power supply provided by the invention is from different substation, and interconnection is set between switchyard.In the situation that losing on two-way level power supply, switchyard still can transfer load, realizes laterally for subsequent use.Interconnection is established at reserved 1 interval of every section of bus of switchyard, forms hand in hand with proximity switches station, and open loop operation, the wire diameter of interconnection is identical with switchyard inlet wire.When field condition allows and when interval resource is comparatively nervous, also can adopt the indirect interconnection of on-load to substitute interconnection, but indirectly interconnection completely cable through being consistent with link lines design wire diameter.
Switchyard inlet wire and interconnection configuration optical-fiber longitudinal difference protection; switchyard busbar sectional izing switch and tie switches allocation backup auto-activating device and expansion backup auto-activating device, can accelerate Distribution Network Failure and eliminate, and the power supply of non-fault section; reduce the fault outage time, contribute to improve power supply reliability.
Although content of the present invention has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.Read after foregoing those skilled in the art, for multiple modification of the present invention and substitute will be all apparent.Therefore, protection scope of the present invention should be limited to the appended claims.

Claims (10)

1. a switchyard feeder line automatic protecting method, is characterized in that,
If switchyard two back into the arbitrary inlet wire generation power failure dead electricity in line, the block switch closure at backup auto-activating device control switch station in standing, the dead electricity bus in switchyard is powered by block switch;
If all there is power failure dead electricity back into line in two of switchyard, in standing, the block switch at expansion backup auto-activating device control switch station disconnects, in standing the switchyard adjacent with breakdown switch station with neighboring station expansion backup auto-activating device control by interconnection respectively to the first paragraph bus in breakdown switch station and second segment bussed supply, the power supply at recovery breakdown switch station.
2. switchyard feeder line automatic protecting method as claimed in claim 1; it is characterized in that; if switchyard two back into the arbitrary inlet wire generation power failure dead electricity in line; the action of the equipment for protecting optical fibre longitudinal difference on inlet wire; disconnect the circuit breaker on inlet wire, and longitudinal difference protection trip signal is informed to backup auto-activating device and expansion backup auto-activating device in station.
3. switchyard feeder line automatic protecting method as claimed in claim 2, is characterized in that, if backup auto-activating device receives the longitudinal difference protection trip signal that equipment for protecting optical fibre longitudinal difference sends, by having the judgement with no pressure of pressure, the block switch closure at control switch station.
4. switchyard feeder line automatic protecting method as claimed in claim 1; it is characterized in that; if all there is power failure dead electricity back into line in two of switchyard; the action of the equipment for protecting optical fibre longitudinal difference on inlet wire; disconnect the circuit breaker on inlet wire, and longitudinal difference protection trip signal is informed in station and neighboring station backup auto-activating device and expansion backup auto-activating device.
5. switchyard feeder line automatic protecting method as claimed in claim 4; it is characterized in that; in if stand, expansion backup auto-activating device receives the longitudinal difference protection trip signal that equipment for protecting optical fibre longitudinal difference sends; the block switch at control switch station disconnects, and the protection actuating signal of autotomying of block switch is informed in station by communication network and neighboring station expansion backup auto-activating device.
6. switchyard feeder line automatic protecting method as claimed in claim 5; it is characterized in that; in if stand, receive longitudinal difference protection trip signal and the protection actuating signal of autotomying with neighboring station expansion backup auto-activating device; by there being the judgement with no pressure of pressure; control the switchyard adjacent with breakdown switch station by interconnection respectively to the first paragraph bus in breakdown switch station and second segment bussed supply, recover the power supply at breakdown switch station.
7. switchyard feeder line automatic protecting method as claimed in claim 6; it is characterized in that; in standing and neighboring station expand and often open stand-by heat interconnection switch closure on the interconnection that backup auto-activating device control is connected with breakdown switch station; adjacent switch station respectively to the first paragraph bus in breakdown switch station and second segment bussed supply, is recovered the power supply at breakdown switch station by interconnection.
8. switchyard feeder line automatic protecting method as claimed in claim 1, is characterized in that,
If two of switchyard carries out power maintenance back into the arbitrary inlet wire in line, the block switch closure at backup auto-activating device control switch station in station, the dead electricity bus in switchyard is powered by block switch;
If two of switchyard carries out power maintenance back into line simultaneously, in station and the block switch at neighboring station expansion backup auto-activating device control switch station disconnect, controls the switchyard adjacent with switchyard by interconnection respectively to first paragraph bus and second segment bussed supply in switchyard.
9. switchyard feeder line automatic protecting method as claimed in claim 8; it is characterized in that; if when two of switchyard carries out power maintenance back into the arbitrary inlet wire in line; switchyard inlet wire generation power failure, in station the adjacent switchyard of backup auto-activating device control by interconnection first paragraph bus and the second segment bussed supply to switchyard.
10. switchyard feeder line automatic protecting method as claimed in claim 8; it is characterized in that, if two while simultaneously carrying out power maintenance back into line of switchyard, switchyard inlet wire generation power failure; the block switch closure at expansion backup auto-activating device control switch station in station, restores electricity.
CN201410122548.3A 2014-03-31 2014-03-31 Switching station feeder line automatic protection method Pending CN103872682A (en)

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CN106786421A (en) * 2016-12-28 2017-05-31 国网上海市电力公司 Relay protection scheme system and the control method handed in hand based on 110KV under powering mode
CN106849328A (en) * 2017-01-20 2017-06-13 上海交通大学 Multi-voltage grade power distribution network automatic change-over device of emergency adaptive configuring method
CN109581999A (en) * 2018-11-05 2019-04-05 中国航空工业集团公司西安飞机设计研究所 A kind of aircraft utilities system busway status data processing method
CN109950915A (en) * 2019-04-11 2019-06-28 国网江苏省电力有限公司镇江供电分公司 Stand-by heat lines join in-put of spare power supply method based on source side optical-fibre channel
CN109950914A (en) * 2019-04-11 2019-06-28 国网江苏省电力有限公司镇江供电分公司 Stand-by heat route in-put of spare power supply method based on source side contact optical-fibre channel
CN110323821A (en) * 2019-07-15 2019-10-11 上海思源输配电工程有限公司 A kind of control method of more segmentation loop-network switch cabinet prepared auto restarts
CN110571800A (en) * 2019-09-10 2019-12-13 长江勘测规划设计研究有限责任公司 Four-power-supply four-bus point-to-point wiring power supply system
CN110854989A (en) * 2019-11-06 2020-02-28 长江勘测规划设计研究有限责任公司 Single-bus three-section annular wiring structure and operation method thereof
CN112701778A (en) * 2020-12-22 2021-04-23 雅砻江流域水电开发有限公司 Three-section type auxiliary power automatic switching method with contact bus
CN116979676A (en) * 2023-08-10 2023-10-31 国网上海市电力公司 Spare power automatic switching control method for double-ring network type power distribution network

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CN106786421A (en) * 2016-12-28 2017-05-31 国网上海市电力公司 Relay protection scheme system and the control method handed in hand based on 110KV under powering mode
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CN109950915B (en) * 2019-04-11 2022-09-16 国网江苏省电力有限公司镇江供电分公司 Hot standby circuit combined standby power supply switching method based on power supply side optical fiber channel
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CN112701778B (en) * 2020-12-22 2023-02-07 雅砻江流域水电开发有限公司 Three-section type auxiliary power automatic switching method with contact bus
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CN116979676B (en) * 2023-08-10 2024-02-23 国网上海市电力公司 Spare power automatic switching control method for double-ring network type power distribution network

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Application publication date: 20140618