CN110416979A - AT subregion institute bus bar protecting method in one's power under all-parallel AT traction system mode - Google Patents
AT subregion institute bus bar protecting method in one's power under all-parallel AT traction system mode Download PDFInfo
- Publication number
- CN110416979A CN110416979A CN201910660607.5A CN201910660607A CN110416979A CN 110416979 A CN110416979 A CN 110416979A CN 201910660607 A CN201910660607 A CN 201910660607A CN 110416979 A CN110416979 A CN 110416979A
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- China
- Prior art keywords
- institute
- protection
- bus
- subregion
- feeder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
- H02H7/226—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices for wires or cables, e.g. heating wires
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/28—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured for meshed systems
Abstract
AT subregion institute bus bar protecting method in one's power under all-parallel AT traction system mode; traction substation, AT institute, subregion institute feeder protection equipment can realize information exchange through special optic fibre data channel and Ethernet switch; AT institute/subregion institute's feeder protection equipment differentiates bus-bar fault; this institute bus-bar fault fault-signal is sent to other two institutes; it is latched the tripping output of other feeder protection equipments, realizes AT institute/subregion institute's bus-bar fault protection selectivity.The present invention in practical applications, AT institute/subregion bus when breaking down, only will disconnect two sets of feeder breakers of this institute, not will lead to entire supply arm and have a power failure, realize AT institute/subregion institute's bus-bar fault protection selectivity, ensure that the normal operation of electric railway.Overcome in the prior art, either occur AT or subregion bus-bar fault, the shortcomings that leading to the equal interruption of power supply of uplink and downlink supply arm that traction substation is administrative, expand scope of power outage.
Description
Technical field
The present invention relates to electric railway traction power supply technique field, AT institute under especially a kind of all-parallel AT traction system mode
And subregion institute bus bar protecting method.
Background technique
Electric propulsion AT power supply mode (auto transformer supply system of electric
Traction) refer to a kind of power supply mode of electric propulsion, also known as autotransformer feeding system；It is single phase industrial frequence alternating-current electric
Changing railway is a kind of power supply mode equipped with auto-transformer for improving power supply quality and reduction and using to the interference of communication.I
State's high-speed electric railway all uses all-parallel AT traction system mode, wherein and traction substation obtains electric energy from electric system,
It is transported on contact net by decompression, auto-transformer post (AT institute) is connected across contact net, positive feeder and steel by certain spacing
On rail, play a part of support 2 × 25kV Traction networks power supply system, subregion is generally made of two AT, while the company of playing
Connect the effect of two supply arms in left and right.All-parallel AT traction system mode for electrically in parallel, leads uplink and downlink in AT institute, subregion institute to reduce
Draw net network pressure, improve Traction networks power supply capacity, traction substation, AT institute and subregion are respectively provided with including downlink, uplink feeder line
Protection equipment including breaker.
All-parallel AT traction system mode protected mode at present are as follows: regardless of AT institute's bus or subregion bus-bar fault,
The feeder breaker that will cause traction substation trips in advance, and the uplink and downlink supply arm for causing traction substation administrative interrupts
Power supply, expands scope of power outage.
Summary of the invention
When in order to overcome the institute of AT present in existing all-parallel AT traction system mode or subregion institute bus to break down, it will lead to
Whole supply arms have a power failure, and bring the drawbacks of seriously affecting to electric railway normal operation, the present invention provides in electrified iron
Construction has fibre optic data transmission network along road, and is provided with Ethernet in traction substation, AT institute and subregion institute and hands over
Change planes, traction substation, AT institute, subregion institute in feeder protection equipment information exchange can be realized through interchanger, thus actually answering
In, when AT institute/subregion institute bus breaks down, the feeder breaker of this institute only will disconnect, realize the protection of AT institute's bus-bar fault
Selectivity, not will lead under the all-parallel AT traction system mode that entire supply arm has a power failure AT subregion institute bus bar protecting method in one's power.
The technical solution adopted by the present invention to solve the technical problems is:
AT subregion institute bus bar protecting method in one's power, traction substation, AT institute, subregion institute protection for feed line under all-parallel AT traction system mode
Device can realize information exchange through special optic fibre data channel and Ethernet switch, and AT institute/subregion institute feeder protection equipment is sentenced
Other fault point sends this institute bus-bar fault fault-signal to other institutes, is latched the tripping output of other feeder protection equipments, realizes
AT institute/subregion institute's bus-bar fault protection selectivity；Application method is as follows, process A: traction substation feeder protection equipment is by normal
Rule setting distance protection, overcurrent protection, rate of current rise protection etc., AT institute and subregion institute feeder protection equipment configure distance and protect
Shield and directional current protection, 3 institute's protection for feed line directions are that pointed line direction is positive direction；Process B:AT institute/subregion
Downlink (uplink) protection device for circuit breaker distance protection and directional current protection start when, to this institute in the form of GOOSE
Uplink (downlink) protection device for circuit breaker of opposite side sends impedance (resistance and reactance), electric current phasor (size and Orientation), feeder line
Protective device is comprehensive according to the impedance, the impedance of electric current phasor and this side, electric current phasor for receiving corresponding feeder protection equipment transmission
Whether Judging fault is located at this institute bus-bar fault.If it is this institute bus-bar fault, feeder protection equipment is sent in the form of GOOSE and is closed
Lock signal give other two feeder protection equipment and two feeder breakers of fast trip, if not this institute bus therefore
Barrier will not then trip because of distance protection, directional over current-based-protection, not send block signal, realize the selectivity of protection.
In the process B, if it is AT institute/subregion institute bus-bar fault, which is sent in the form of GOOSE
Block signal give other two feeder protection equipment and two feeder breakers of fast trip, if not this institute bus therefore
Barrier will not then trip because of distance protection, directional over current-based-protection, also not send block signal, realize the selectivity of protection.
The medicine have the advantages that the present invention is built along electric railway fibre optic data transmission network, and
Ethernet switch is provided in traction substation, AT institute and subregion institute, and traction substation, AT institute, feeder line is protected in subregion institute
Protection unit can realize information exchange through interchanger, in practical applications, when AT institute/subregion institute bus breaks down, only will disconnect
Two feeder breakers of this institute realize the selectivity of AT institute's bus-bar fault protection, realize the selection of AT institute's bus-bar fault protection
Property, not will lead to entire supply arm has a power failure, and realizes the normal operation of electric railway.It overcomes in the prior art, either
Occur AT or subregion bus-bar fault, the feeder breaker that will cause traction substation trips in advance, then,
Remaining whole AT institute, subregion breaker o-volt protection tripping, eventually result in the administrative entire supply arm of traction substation
The shortcomings that cut-off is electric, expands scope of power outage.Based on the above, the application prospect that the present invention has had.
Detailed description of the invention
The present invention is described further below in conjunction with drawings and examples.
Fig. 1 is prior art application schematic diagram.
Fig. 2 is application schematic diagram of the present invention.
Specific embodiment
Shown in Fig. 1, all-parallel AT traction system mode in AT institute, subregion institute by uplink and downlink for electrically in parallel, to reduce Traction networks net
Pressure, improve Traction networks power supply capacity, wherein AT institute 271,272 be respectively downlink power supply, uplink feed line of power supply breaker, divide
Area 271,272 be respectively downlink power supply, uplink feed line of power supply breaker.Existing all-parallel AT traction system mode protected mode
Are as follows: regardless of the feeder line for occurring to will cause traction substation in the k1 of AT institute bus or the k2 point failure of subregion institute bus is disconnected
Road device 213,214 in advance trip, then, AT institute, subregion institute 271,272 breaker o-volt protections tripping, eventually lead to above and below
The equal power loss of row Traction networks, expands scope of power outage.
Shown in Fig. 2, AT subregion institute bus bar protecting method in one's power under all-parallel AT traction system mode, traction substation, AT institute,
Subregion institute feeder protection equipment can realize information exchange, AT institute/subregion institute through special optic fibre data channel and Ethernet switch
Feeder protection equipment Judging fault point sends this institute bus-bar fault fault-signal to other institutes, is latched other protection for feed line dress
Tripping output is set, and then realizes AT institute/subregion institute's bus-bar fault protection selectivity；Application method is as follows, process A: traction becomes
Distance protection, overcurrent protection, rate of current rise protection etc., AT institute and subregion institute feeder line is routinely arranged in electric institute's feeder protection equipment
Protective device configures distance protection and directional current protection, and 3 institute's protection for feed line directions are that pointed line direction is positive
Direction；Process B:AT institute/subregion downlink 271(uplink 272) protection device for circuit breaker distance protection and directional current protect
Shield start when, to the uplink 272(downlink 271 of this institute opposite side in the form of GOOSE) protection device for circuit breaker send impedance (resistance and
Reactance), electric current phasor (size and Orientation), feeder protection equipment is according to receiving impedance, the electricity that corresponding feeder protection equipment is sent
Whether the impedance of stream phasor and this side, electric current phasor comprehensive distinguishing failure are located at this institute bus-bar fault.If it is the event of this institute bus
Barrier, feeder protection equipment is sent in the form of GOOSE block signal to other two feeder protection equipment simultaneously fast trip two
A feeder breaker then will not also be sent out if not this institute bus-bar fault because of distance protection, directional over current-based-protection tripping
Block signal is sent, realizes the selectivity of protection.In process B, if it is this institute bus-bar fault, feeder protection equipment is with GOOSE shape
Formula send block signal to other two institute feeder protection equipment simultaneously two feeder breakers of fast trip, if not this institute
Bus-bar fault will not then trip because of distance protection, directional over current-based-protection, also not send block signal, realize protection
Selectivity.
Shown in Fig. 2, when AT institute bus k1 point breaks down, AT the acquisition of 271 and 272 feeder protection equipments resistance
Anti-, electric current phasor is judged contrary, then is identified as AT institute bus-bar fault, the feeder breaker tripping of AT institute, while being led
Draw electric substation 213,214 feeder protection equipments, subregion institute 271,272 feeder protection equipments transmission block signal；Traction substation
Although 213,214 feeder protection equipments judge that Traction networks are faulty according to autoprotection element, due to receive from
Be AT block signal without tripping, avoid the occurrence of entire Traction networks and have a power failure；271,272 feeder protection equipments of subregion connect
Receive from AT block signal, no matter autoprotection element start whether, will not trip.Similarly, when subregion institute bus
K2 point breaks down, subregion 271 and 272 feeder protection equipments acquisition impedance, electric current phasor judge it is contrary, then
Be identified as subregion institute bus-bar fault, subregion feeder breaker tripping, while being filled to traction substation 213,214 protection for feed line
It sets, 271,272 feeder protection equipments of AT institute send block signal；Although traction substation 213,214 feeder protection equipments according to
Autoprotection element judges that Traction networks are faulty, but by receive come it is contented be subregion block signal without jumping
Lock avoids the occurrence of entire Traction networks and has a power failure；AT 271,272 feeder protection equipments receive from subregion block signal,
Whether no matter autoprotection element starts, will not it trip.
Shown in Fig. 2, present invention construction along electric railway has fibre optic data transmission network, and in traction power transformation
Ethernet switch is provided in institute, AT institute and subregion institute, traction substation, AT institute, feeder protection equipment energy in subregion institute
Information exchange is realized through interchanger, in practical applications, when AT institute/subregion institute bus breaks down, only will disconnect the two of this institute
A feeder breaker realizes the selectivity of AT institute's bus-bar fault protection, not will lead to entire supply arm and has a power failure, realizes bus-bar fault
The selectivity of protection realizes the normal operation of electric railway.It overcomes in the prior art, either occurs at AT still
Subregion bus-bar fault, the feeder breaker that will cause traction substation trips in advance, then, remaining whole AT institute, point
Area breaker o-volt protection tripping, eventually result in the administrative supply arm interruption of power supply of traction substation, expand power failure
The shortcomings that range.
Basic principles and main features and advantages of the present invention of the invention have been shown and described above, for this field skill
For art personnel, it is clear that invention is not limited to the details of the above exemplary embodiments, and without departing substantially from spirit of the invention or
In the case where essential characteristic, the present invention can be realized in other specific forms.Therefore, in all respects, should all incite somebody to action
Embodiment regards exemplary as, and is non-limiting, the scope of the present invention by appended claims rather than on state
Bright restriction, it is intended that including all changes that fall within the meaning and scope of the equivalent elements of the claims in the present invention
It is interior.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (2)
1. AT in one's power protect by subregion institute bus bar protecting method, traction substation, AT institute, subregion institute's feeder line under all-parallel AT traction system mode
Protection unit can realize information exchange, AT institute/subregion institute feeder protection equipment through special optic fibre data channel and Ethernet switch
Judging fault point sends this institute bus-bar fault fault-signal to other institutes, is latched the tripping output of other feeder protection equipments, into
And realize AT institute/subregion institute's bus-bar fault protection selectivity；Application method is as follows, process A: traction substation protection for feed line dress
It sets and distance protection, overcurrent protection, rate of current rise protection etc. is routinely set, AT institute and subregion institute feeder protection equipment configure
Distance protection and directional current protection, 3 institute's protection for feed line directions are that pointed line direction is positive direction；Process B:AT
Institute/subregion downlink (uplink) protection device for circuit breaker distance protection and directional current protection start when, in the form of GOOSE
Impedance, electric current phasor are sent to uplink (downlink) protection device for circuit breaker of this institute opposite side, feeder protection equipment is according to reception pair
Answer whether the impedance, the impedance of electric current phasor and this side, electric current phasor comprehensive distinguishing failure of feeder protection equipment transmission are located at this
Institute's bus-bar fault；If it is this institute bus-bar fault, feeder protection equipment is sent block signal in the form of GOOSE and gives other two institutes
Feeder protection equipment and two feeder breakers of this institute of fast trip then will not be because of if not this institute bus-bar fault
Distance protection, directional over current-based-protection tripping, also do not send block signal, realize the selectivity of protection.
2. subregion institute bus bar protecting method, feature exist AT in one's power under all-parallel AT traction system mode according to claim 1
In in process B, if it is this institute bus-bar fault, feeder protection equipment is sent block signal in the form of GOOSE and gives other two institutes
Feeder protection equipment and two feeder breakers of fast trip, if not this institute bus-bar fault, then will not because of distance protect
Shield, directional over current-based-protection tripping, also do not send block signal, realize the selectivity of protection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910660607.5A CN110416979A (en) | 2019-07-22 | 2019-07-22 | AT subregion institute bus bar protecting method in one's power under all-parallel AT traction system mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910660607.5A CN110416979A (en) | 2019-07-22 | 2019-07-22 | AT subregion institute bus bar protecting method in one's power under all-parallel AT traction system mode |
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| CN110416979A true CN110416979A (en) | 2019-11-05 |
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| CN201910660607.5A Pending CN110416979A (en) | 2019-07-22 | 2019-07-22 | AT subregion institute bus bar protecting method in one's power under all-parallel AT traction system mode |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111541227A (en) * | 2020-03-18 | 2020-08-14 | 天津凯发电气股份有限公司 | Wide area protection system of AT full parallel power supply network based on artificial intelligence |
| CN111610409A (en) * | 2020-06-10 | 2020-09-01 | 天津凯发电气股份有限公司 | Distance measurement method for electric railway AT power supply system |
| CN111769521A (en) * | 2020-05-27 | 2020-10-13 | 广州市扬新技术研究有限责任公司 | GOOSE-based direct current traction bus protection implementation method |
| CN111796164A (en) * | 2020-07-16 | 2020-10-20 | 西南交通大学 | Fault location method for full-parallel AT traction network |
| CN111907381A (en) * | 2020-06-29 | 2020-11-10 | 中铁第一勘察设计院集团有限公司 | Sectional type self-coupling traction power supply system |
| CN113022389A (en) * | 2020-09-21 | 2021-06-25 | 西南交通大学 | Relay protection method for traction network power supply arm based on directional impedance element |
| CN113036734A (en) * | 2020-09-21 | 2021-06-25 | 西南交通大学 | Traction network power supply arm relay protection method based on directional current increment element |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111541227A (en) * | 2020-03-18 | 2020-08-14 | 天津凯发电气股份有限公司 | Wide area protection system of AT full parallel power supply network based on artificial intelligence |
| CN111541227B (en) * | 2020-03-18 | 2022-04-26 | 天津凯发电气股份有限公司 | Wide area protection system of AT full parallel power supply network based on artificial intelligence |
| CN111769521A (en) * | 2020-05-27 | 2020-10-13 | 广州市扬新技术研究有限责任公司 | GOOSE-based direct current traction bus protection implementation method |
| CN111610409A (en) * | 2020-06-10 | 2020-09-01 | 天津凯发电气股份有限公司 | Distance measurement method for electric railway AT power supply system |
| CN111610409B (en) * | 2020-06-10 | 2022-06-07 | 天津凯发电气股份有限公司 | Distance measurement method for electric railway AT power supply system |
| CN111907381A (en) * | 2020-06-29 | 2020-11-10 | 中铁第一勘察设计院集团有限公司 | Sectional type self-coupling traction power supply system |
| CN111796164A (en) * | 2020-07-16 | 2020-10-20 | 西南交通大学 | Fault location method for full-parallel AT traction network |
| CN111796164B (en) * | 2020-07-16 | 2021-04-13 | 西南交通大学 | Fault location method for full-parallel AT traction network |
| CN113022389A (en) * | 2020-09-21 | 2021-06-25 | 西南交通大学 | Relay protection method for traction network power supply arm based on directional impedance element |
| CN113036734A (en) * | 2020-09-21 | 2021-06-25 | 西南交通大学 | Traction network power supply arm relay protection method based on directional current increment element |
| CN113022389B (en) * | 2020-09-21 | 2022-11-29 | 西南交通大学 | Relay protection method for traction network power supply arm based on directional impedance element |
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Application publication date: 20191105 |