CN109818410A - A kind of rapidly self-healing method of urban track traffic ac power supply system - Google Patents
A kind of rapidly self-healing method of urban track traffic ac power supply system Download PDFInfo
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- CN109818410A CN109818410A CN201711163712.5A CN201711163712A CN109818410A CN 109818410 A CN109818410 A CN 109818410A CN 201711163712 A CN201711163712 A CN 201711163712A CN 109818410 A CN109818410 A CN 109818410A
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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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Abstract
The invention discloses a kind of rapidly self-healing methods of urban track traffic ac power supply system, after failure occurs, can issue shunt tripping order to the protective device of its looped network cable opposite side while inlet-outlet line switching protective device acts；The protective device for receiving the shunt tripping order of looped network cable opposite side issues trip signal to this switch first; after switching tripping; receive looped network opposite side shunt tripping signal protective device can backup auto-activating device into station issue prepared auto restart enabling signal; meet from the condition of throwing; backup auto-activating device can act; and then bus connection switch is closed, so that fault point junior transformer substation system restores rapidly, ac power supply system continues to operate normally.In such a way that looped network opposite side shunt tripping signal triggers the starting of junior's transformer substation spare power automatic switching, so that this method has stronger adaptivity, it is not only adapted to the different operating condition of ac power supply system, but also the system self-healing under different faults type can be completed.
Description
Technical field
The present invention relates to urban track traffic ac power supply system relay protection fields, hand over more particularly to a kind of city rail
The rapidly self-healing method of logical ac power supply system.
Background technique
Urban track traffic ac power supply system provides required electric energy for the normal operation of urban track traffic.Once city
Prolonged power failure occurs in city's rail transportation operation service process, not only results in the paralysis of urban track traffic transport
Paralysis, or even the safety of passenger survival can be jeopardized and cause the loss of property.Therefore, the rapidly self-healing of post-fault system can have
The coverage of the reduction accident of effect, and reduce the loss caused by it.
Urban track traffic ac power supply system is made of multiple power supply zones, and each power supply zone is supplied using single-side power
The multi-Substation ring string structure of electricity, different power supply zones can realize that mutual support is supplied by interconnection switch and link cable
Electricity.Therefore, each power supply zone has normal power supply and supports both power supply modes of powering, as shown in Figure 1.
Currently, there are two types of common self-healing methods for urban track traffic ac power supply system: differential starting spare power automatic switching method
Start spare power automatic switching method with decompression.Since the Huan Chuan substation quantity of power supply system is more, looped network cable is longer, and looped network electricity
Cable is laid among the environment of underground humidity more, and the probability that ring network fault occurs for AC system is larger.For These characteristics, mostly
The urban transportation in number city uses the self-healing method of differential protection action launching prepared auto restart, i.e. event occurs for looped network cable
After barrier, backup power automatic switching protection device in differential protection movement while initiating station.Although the event of looped network cable may be implemented in this method
The rapidly self-healing of ac power supply system after barrier, but after bus-bar fault occurs, differential protection can not be acted, and be stood interior from throwing dress
Setting just can not be activated, cause substation and substation, junior power loss, power supply system can not self-healings.
In view of problem above, the city rail ac power supply system in some places starts the self-healing side of prepared auto restart using decompression
Method, i.e., after certain section of bus loss of pressure in station, the incoming breaker where backup auto-activating device to decompression bus issues trip signal, into
After line breaker tripping, backup auto-activating device issues switching signal to bus connection switch, completes restoring electricity for system.Although this method
It can solve the system self-healing under polymorphic type failure, however decompression starting prepared auto restart has certain limitation.Firstly, since losing
Pressure starting spare power automatic switching method wants the incoming switch of first tripping decompression bus, it is therefore desirable to the incoming switch of preparatory clear bus.And
When the method for operation changes, after system load flow changes, disengaging wiretap changes, and the method is just no longer applicable in.By
This, decompression starting prepared auto restart may be only available for a kind of method of operation.Secondly as the substation in power supply zone is to pass through cable
Together, when some station, interior bus loss of pressure will cause the bus while decompression of its substation, junior to ring string, therefore in different stations
Decompression prepared auto restart need by the time it is differential cooperated, to prevent the decompression prepared auto restart in multiple substations from moving at the same time.Root
From the point of view of experience according to domestic certain routes, decompression is differential usually all in 2s or more from the time thrown between adjacent substations, in this way
Power supply zone a fairly large number of for ring string, substation's self-healing delay closer to power supply zone end are then longer.
Summary of the invention
The purpose of the present invention is to provide a kind of rapidly self-healing method of urban track traffic ac power supply system, with reality
Existing fast quick-recovery of the urban track traffic ac power supply system under different types of faults and the different methods of operation.
In order to achieve the above objectives, the present invention uses following solution:
A kind of rapidly self-healing method of urban track traffic ac power supply system, includes the following steps:
(1) after ac power supply system failure occurs, urban track traffic ac power supply system passes in and out the protection of wiretap
After device action, the protective device switched to its looped network cable opposite side issues shunt tripping signal；
(2) it after the protective device of looped network opposite side switch receives shunt tripping signal, is first switched to it and issues trip signal, wait open
Close tripping after, then into station bus connection switch backup auto-activating device issue prepared auto restart start command；
(3) backup auto-activating device of bus connection switch receives prepared auto restart enabling signal in standing, and after meeting from the condition of throwing, it is standby from
It throws device and issues order of closing a floodgate to bus connection switch through short be delayed.
Further, in the step (3), the backup auto-activating device of each substation can set unified delay time.
Further, in above-mentioned steps (1), when looped network cable breaks down, the protective device of looped network outlet switch is acted,
Tripping outlet switch is by failure removal；While outlet switch protection act, issued to the switch protection of its looped network cable opposite side
Shunt tripping signal, fault point is isolated, and provides trigger condition for the system self-healing after ring network fault.
Further, in above-mentioned steps (1), when bus breaks down in substation, the protection of fault bus incoming switch
Device action, and shunt tripping order is issued to the outlet switch protective device of same bus, realize the excision and isolation of failure；Failure is female
While the inlet-outlet line protection act of line, shunt tripping order is issued to its looped network cable opposite side switch protection respectively, realizes failure
It is completely isolated, and trigger condition is provided for the system self-healing after bus-bar fault.
Method
After adopting the above method, the beneficial effects of the present invention are: bus-bar fault or ring network fault no matter occurs, looped network into
While outlet protection act, the protective device that can switch to its looped network opposite side issues shunt tripping order, effectively completes failure
It is complete excision and isolation, provide advantageous condition for the self-healing after power supply system failure, and provide touching for the movement of prepared auto restart
Hair factor.Receive looped network shunt tripping signal protective device detect switch tripping after, immediately to bus connection switch backup auto-activating device
Issue prepared auto restart enabling signal.After meeting from the condition thrown, backup auto-activating device, which can act, closes bus connection switch.Each station
Between prepared auto restart action delay due to without cooperate, the rapidly self-healing of feasible system.The method of the present invention due to
The system self-healing under different faults and the different methods of operation may be implemented, therefore there is stronger adaptive ability.
Detailed description of the invention
Fig. 1 is urban track traffic ac power supply system normal power supply mode；
Fig. 2 is that urban track traffic ac power supply system supports power supply mode；
Fig. 3 is the generation logic chart of the prepared auto restart enabling signal of the embodiment of the present invention；In figure, a- receives looped network opposite side connection
Signal is jumped, b- switchs quartile, c- AND gate operation logic by shunt tripping；
Fig. 4 is the logic chart of the prepared auto restart movement of the embodiment of the present invention；In figure, mother's a-I prepared auto restart condition meets, and b-I is female
Inlet wire prepared auto restart enabling signal, mother's c-I outlet prepared auto restart enabling signal, mother's d-II inlet wire prepared auto restart enabling signal, mother e-II go out
Line prepared auto restart enabling signal, mother's f-II prepared auto restart condition meet, g- AND gate operation logic, h- OR-gate operation logic, and i- is standby
From throwing action delay.
Specific embodiment
Below with reference to attached drawing 1 to 4, technical method of the invention is described in detail.
The present invention provides a kind of rapidly self-healing method of urban track traffic ac power supply system, includes the following steps:
(1) after the protective device movement of urban track traffic ac power supply system disengaging wiretap, to its looped network cable pair
The protective device of side switch issues shunt tripping signal；
(2) it after the protective device of looped network opposite side switch receives shunt tripping signal, is first switched to it and issues trip signal, wait open
Close tripping after, then into station bus connection switch backup auto-activating device issue prepared auto restart start command；
(3) backup auto-activating device of bus connection switch receives prepared auto restart enabling signal in standing, and after meeting from the condition of throwing, it is standby from
It throws device and issues order of closing a floodgate to bus connection switch through short be delayed.
The protective device movement of disengaging wiretap of the present invention described in detail below.Urban track traffic Alternating Current Power Supply
There are mainly three types of fault type, that is, ring network fault, bus-bar fault and feeder faults for system.Wherein, when feeder fault generation, feedback
After wiretap tripping, ac power supply system can restore to operate normally.And after bus-bar fault or ring network fault occurs, due to
For ac power supply system using single-side power power supply multi-Substation ring string structure, the tripping for passing in and out wiretap will lead to fault point
All substations, junior while decompression.Therefore, the self-healing method of urban track traffic ac power supply system is mainly for looped network event
System after the movement of the fast quick-recovery of power supply after barrier and bus-bar fault, i.e. inlet-outlet line switching protective device is restored.
The protective device of the present invention switched to its looped network opposite side issues shunt tripping signal.It is opened up in view of ac power supply system
The characteristics of flutterring structure, when looped network cable two sides switch wherein side tripping, substation, junior can power loss.In this way, failure occurs
Tripping will not only expand scope of power outage while the breaker of looped network cable two sides afterwards, but also can more effectively carry out to fault point
Isolation.
Of the present invention from throwing condition includes that backup auto-activating device function investment, isolation switch be in closing position and former
The conditions such as bus loss of pressure in station caused by barrier.According to self-healing method proposed by the present invention, after looped network cable breaks down, failure
The incoming relay-protection device of point substation, junior receives the shunt tripping signal issued from looped network cable opposite side, just opens after switching tripping
Backup auto-activating device in dynamic station.After failure removal, fault point junior substation power loss side bus can not restore, and prepared auto restart acts item
Part meets, and the interior bus connection switch in station is closed in prepared auto restart movement, so that subordinate station service restoration.When bus-bar fault occurs, failure
The outlet of point higher level substation and the inlet wire of substation, junior can receive the shunt tripping issued from looped network cable opposite side
Signal also can star the backup auto-activating device in respectively standing after switching tripping respectively.After failure removal, fault point higher level substation
Decompression side bus restores normal, and prepared auto restart operation condition is unsatisfactory for, and prepared auto restart is failure to actuate；Fault point junior substation power loss side is female
Line can not restore, and prepared auto restart operation condition meets, and the interior bus connection switch in station is closed in prepared auto restart movement, and the power supply for completing subordinate station is extensive
It is multiple.
In order to illustrate self-healing method of the present invention, following reality is now enumerated according to urban track traffic ac power supply system
Example is applied, but Feeding System of Urban Rail Transit structure is only used as a kind of way of realization of inventive concept, for similar
Power supply system structure, the present invention are equally applicable.Under two kinds of methods of operation, this self-healing method is analyzed as follows:
1) the K1 point in Fig. 1 breaks down, and the protective devices of 304 switches issue trip signals, and to looped network cable opposite side
402 switch protections issue shunt tripping order, realize fault point it is correct excision and be isolated；After 402 switch trippings, 402 switches
Protective device issues enabling signal to the backup auto-activating device of 400 switches, after prepared auto restart condition satisfaction, closes 400 switches, realizes
The recovery of power supply system；
2) the K2 point in Fig. 1 breaks down, and the protective device of 402 switches issues trip signal, and 404 to same bus are opened
The protective device of pass issues shunt tripping signal；While 402 switches and 404 switch motion, respectively to the 304 of its looped network cable opposite side
Switch and 502 switch protections issue shunt tripping order, realize the completely isolated of fault point；After 502 switch trippings, 502 switches
Protective device issues enabling signal to the backup auto-activating device of 500 switches, after prepared auto restart condition satisfaction, closes 500 switches, completes
Fault point substation, junior restores electricity；
3) the K1 point in Fig. 2 breaks down, and the protective devices of 402 switches issue trip signals, and to looped network cable opposite side
304 switch protections issue shunt tripping order, realize fault point it is correct excision and be isolated；After 304 switch trippings, 304 switches
Protective device issues enabling signal to the backup auto-activating device of 300 switches, after prepared auto restart condition satisfaction, closes 300 switches, realizes
The recovery of power supply system；
4) the K2 point in Fig. 2 breaks down, and the protective device of 404 switches issues trip signal, and 402 to same bus are opened
The protective device of pass issues shunt tripping signal；While 402 switches and 404 switch motion, respectively to the 304 of its looped network cable opposite side
Switch and 502 switch protections issue shunt tripping order, realize the completely isolated of fault point；After 304 switch trippings, 304 switches
Protective device issues enabling signal to the backup auto-activating device of 300 switches, after prepared auto restart condition satisfaction, closes 300 switches, completes
Fault point substation, junior restores electricity；
The above examples only illustrate the technical idea of the present invention, and this does not limit the scope of protection of the present invention, this guarantor
The on-off models such as enabling signal of shunt tripping signal, backup auto-activating device between standing in maintaining method and in station can by GOOSE network,
Hardwire, communication network or additional device transmit.Prepared auto restart enabling signal both can be as described in this patent by by shunt tripping
Protective device can also be judged to generate to generate by mother backup auto-activating device or other devices.It is all to be proposed according to the present invention
Technical idea, any change done on the basis of technical method falls within the scope of the present invention.
Claims (4)
1. a kind of rapidly self-healing method of urban track traffic ac power supply system, it is characterised in that include the following steps:
(1) when ac power supply system failure occurs, urban track traffic ac power supply system passes in and out the protective device of wiretap
After movement, the protective device switched to its looped network cable opposite side issues shunt tripping signal；
(2) it after the protective device of looped network cable opposite side switch receives shunt tripping signal, is first switched to it and issues trip signal, wait open
Close tripping after, then into station bus connection switch backup auto-activating device issue prepared auto restart start command；
(3) backup auto-activating device of bus connection switch receives prepared auto restart enabling signal in standing, and meet setting from after throwing condition, it is standby
Delay of the automatic bus by setting issues order of closing a floodgate to bus connection switch.
2. a kind of rapidly self-healing method of urban track traffic ac power supply system as described in claim 1, it is characterised in that:
In the step (3), the backup auto-activating device of each substation sets unified delay time.
3. a kind of rapidly self-healing method of urban track traffic ac power supply system as claimed in claim 1 or 2, feature exist
In: in the step (1), when the ac power supply system failure is that looped network cable breaks down, the protection of looped network outlet switch
Device action, tripping outlet switch is by failure removal；While outlet switch protection act, to the switch of its looped network cable opposite side
Protection issues shunt tripping signal, fault point is isolated, and provide trigger condition for the system self-healing after ring network fault.
4. a kind of rapidly self-healing method of urban track traffic ac power supply system as claimed in claim 1 or 2, feature exist
In: in the step (1), when the ac power supply system failure is that bus breaks down in substation, fault bus inlet wire is opened
The protective device of pass acts, and issues shunt tripping order to the outlet switch protective device of same bus, realize failure excision and every
From；While the inlet-outlet line protection act of fault bus, shunt tripping order is issued to its looped network cable opposite side switch protection respectively, it is real
Now failure is completely isolated, and provides trigger condition for the system self-healing after bus-bar fault.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711163712.5A CN109818410A (en) | 2017-11-21 | 2017-11-21 | A kind of rapidly self-healing method of urban track traffic ac power supply system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711163712.5A CN109818410A (en) | 2017-11-21 | 2017-11-21 | A kind of rapidly self-healing method of urban track traffic ac power supply system |
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| CN201711163712.5A Withdrawn CN109818410A (en) | 2017-11-21 | 2017-11-21 | A kind of rapidly self-healing method of urban track traffic ac power supply system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110364996A (en) * | 2019-07-24 | 2019-10-22 | 国家电网有限公司 | Improve the protective device of station service power supply reliability |
| CN111934288A (en) * | 2020-07-09 | 2020-11-13 | 深圳供电局有限公司 | 110kV line protection wiring structure and backup power automatic switching starting method thereof |
| CN112260272A (en) * | 2020-10-12 | 2021-01-22 | 许继电气股份有限公司 | Coal mine fault isolation automatic recovery power supply method |
| CN112383033A (en) * | 2020-10-10 | 2021-02-19 | 国网辽宁省电力有限公司电力科学研究院 | System and method suitable for local rapid spare power automatic switching of power distribution network ring network line |
| CN113972653A (en) * | 2021-11-01 | 2022-01-25 | 国网北京市电力公司 | Electric network net rack |
| CN114243887A (en) * | 2021-12-23 | 2022-03-25 | 天津凯发电气股份有限公司 | Bus-tie spare power automatic switching method for urban rail transit intelligent transformer substation |
| CN118199057A (en) * | 2024-04-30 | 2024-06-14 | 中国能源建设集团安徽省电力设计院有限公司 | System for switching small power supply of regional power grid in cooperation with spare power automatic switching device and control method |
-
2017
- 2017-11-21 CN CN201711163712.5A patent/CN109818410A/en not_active Withdrawn
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110364996A (en) * | 2019-07-24 | 2019-10-22 | 国家电网有限公司 | Improve the protective device of station service power supply reliability |
| CN110364996B (en) * | 2019-07-24 | 2021-08-20 | 国家电网有限公司 | Protection device for improving service power supply reliability |
| CN111934288A (en) * | 2020-07-09 | 2020-11-13 | 深圳供电局有限公司 | 110kV line protection wiring structure and backup power automatic switching starting method thereof |
| CN111934288B (en) * | 2020-07-09 | 2022-09-02 | 深圳供电局有限公司 | 110kV line protection wiring structure and backup power automatic switching starting method thereof |
| CN112383033A (en) * | 2020-10-10 | 2021-02-19 | 国网辽宁省电力有限公司电力科学研究院 | System and method suitable for local rapid spare power automatic switching of power distribution network ring network line |
| CN112260272A (en) * | 2020-10-12 | 2021-01-22 | 许继电气股份有限公司 | Coal mine fault isolation automatic recovery power supply method |
| CN113972653A (en) * | 2021-11-01 | 2022-01-25 | 国网北京市电力公司 | Electric network net rack |
| CN113972653B (en) * | 2021-11-01 | 2024-04-26 | 国网北京市电力公司 | Grid rack |
| CN114243887A (en) * | 2021-12-23 | 2022-03-25 | 天津凯发电气股份有限公司 | Bus-tie spare power automatic switching method for urban rail transit intelligent transformer substation |
| CN114243887B (en) * | 2021-12-23 | 2024-03-29 | 天津凯发电气股份有限公司 | Method for bus-tie spare power automatic switching of intelligent substation for urban rail transit |
| CN118199057A (en) * | 2024-04-30 | 2024-06-14 | 中国能源建设集团安徽省电力设计院有限公司 | System for switching small power supply of regional power grid in cooperation with spare power automatic switching device and control method |
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