CN108808641A - Electric railway AT institute's sectionaliser disconnecting switch measure and control devices and its investigating method - Google Patents
Electric railway AT institute's sectionaliser disconnecting switch measure and control devices and its investigating method Download PDFInfo
- Publication number
- CN108808641A CN108808641A CN201810973660.6A CN201810973660A CN108808641A CN 108808641 A CN108808641 A CN 108808641A CN 201810973660 A CN201810973660 A CN 201810973660A CN 108808641 A CN108808641 A CN 108808641A
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- breaker
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000005259 measurement Methods 0.000 claims abstract description 5
- 230000008878 coupling Effects 0.000 claims description 12
- 238000010168 coupling process Methods 0.000 claims description 12
- 238000005859 coupling reaction Methods 0.000 claims description 12
- 230000007717 exclusion Effects 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 5
- 230000011218 segmentation Effects 0.000 claims description 2
- 230000001629 suppression Effects 0.000 abstract 1
- 238000010891 electric arc Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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
- H02H7/26—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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Gas-Insulated Switchgears (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The invention discloses the measure and control devices and its investigating method of a kind of electric railway AT institutes sectionaliser disconnecting switch, are related to attached wires of AC electrified railway traction power supply measurement and control area.The measurement end of input terminal the connection intermediate AT institute's voltage transformers and its upper left cable current transformer, disconnecting switch upper left cable current transformer and left neighbour AT institute's upper right cable current transformers and right neighbour AT institutes upper left cable current transformer of measure and control device, the intermediate AT of output end connection upper left net breaker, upper right net breaker and disconnecting switch and left neighbour AT institute's upper right net breakers and right neighbour AT left neighbour surf the Internet the control terminal of breaker.Using intermediate AT the position that occurs come failure judgement of the comparison of size of current that measures of voltage and the current transformer of related three branches in left and right.Be mainly used for the AT of the longer supply lines of band arc suppression and observing and controlling.
Description
Technical field
The invention belongs to attached wires of AC electrified railway traction power supply observation and control technology fields.
Background technology
The AT power supply modes of electric railway have stronger power supply capacity and longer power supply compared to direct feeding system
Arm lengths, it is possible to reduce electric split-phase and non-Electric region, therefore, China's high ferro have nearly all selected AT power supply modes.
But China mountain range, river are numerous, this setting nearby often to the be in contact with it net sectionalisers of AT causes to be stranded
Difficulty, or even must pull open very long distance, some are up to 2km, this just need make to set up between AT institutes and its sectionaliser it is very long
Supply lines.AT supply lines and contact net between its sectionaliser length it is bigger, inductance is bigger, and electrification train is logical
When crossing sectionaliser, unexpected conversion of the train electric current between this section of supply lines and contact net will cause overvoltage and arcing, arcing
Meeting scaling loss contact line, or even contact line is blown, it leads to a disaster.
Obviously, being badly in need of the technical issues of solving now is：Under accidental conditions, eliminate train by distance AT institute compared with
Phenomenon of arc discharge when remote sectionaliser, and when contact net breaks down, then it should in time and accurately distinguish inside and outside supply lines range
Failure occurs section and is cut off failure.
Invention content
The object of the present invention is to provide a kind of electric railway AT institutes sectionaliser disconnecting switch measure and control device and its observing and controlling sides
Method, when it can efficiently solve normal operation train by far from AT institute sectionaliser generation arcing the technical issues of, work as simultaneously
When contact net breaks down, then failure inside and outside supply lines range should be distinguished in time and accurately, section occurs and is cut off event
Barrier.
The purpose of the present invention is achieved through the following technical solutions：
A kind of electric railway AT institutes sectionaliser disconnecting switch measure and control device, the measure and control device are arranged in left neighbour AT
Institute, right neighbour AT between intermediate AT institutes, the intermediate AT institute and contact net T, rail R, negative feeder F and left neighbour AT institutes, right neighbour AT
Collectively constituted power supply system of electrified railway；The input terminal connection voltage transformer YH and Current Mutual Inductance of the measure and control device
Device LH12, current transformer LH21, current transformer LH1, current transformer LH2 and current transformer LH23 and Current Mutual Inductance
The measurement end of device LH32, the intermediate AT of output end connection upper left net breaker DL21, upper right net breaker DL23, keep apart
Close GK and left neighbour AT upper right net breaker DL12 and right neighbour AT upper left net breaker DL32 control terminal.
The left neighbour AT self coupling become an AT1 contact net terminal draw after be divided into two-way, netted all the way by upper left disconnected
Road device DL10 and upper left cable SW10 are connected to nearby on the contact net T of one FD1 left ends of sectionaliser, and another way is disconnected by upper right net
Road device DL12 and upper right cable SW12 are connected to nearby on the contact net T of one FD1 right ends of sectionaliser, and one FD1 of sectionaliser is serially connected in
Left neighbour AT side contact net in.
The right neighbour AT self coupling become three AT3 contact net terminal draw after be divided into two-way, netted all the way by upper left disconnected
Road device DL32 and upper left cable SW32 are connected to nearby on the contact net T of three FD3 left ends of sectionaliser, and another way is disconnected by upper right net
Road device DL34 and upper right cable SW34 are connected to nearby on the contact net T of three FD3 right ends of sectionaliser, and three FD3 of sectionaliser is serially connected in
Right neighbour AT side contact net in.
The intermediate AT self coupling become two AT2 contact net terminal draw after be divided into two-way, netted all the way by upper left disconnected
Road device DL21 and upper left cable SW21 are connected to nearby on the contact net T of two FD2 left ends of sectionaliser, the institute upper lefts referred to as AT site S,
Another way is connected to by upper right net breaker DL23 and supply lines GD on the contact net T of two FD2 right ends of sectionaliser.
Disconnecting switch GK is set at two FD2 of the sectionaliser, and one end of disconnecting switch GK is mutual by electric current connected in series
Sensor LH1 and upper cable SW1 are connected to nearby on the contact net T of two FD2 left ends of sectionaliser, and the other end passes through electricity connected in series
Current transformer LH2 and upper cable SW2 are connected to nearby on the contact net T of two FD2 right ends of sectionaliser, and disconnecting switch GK is normally closed.
One FD1 of the sectionaliser, two FD2 of sectionaliser and three FD3 of sectionaliser can be such that train electrification passes through.The mesh of the present invention
Needs be achieved through the following technical solutions：
A kind of electric railway AT institutes sectionaliser disconnecting switch investigating method, wherein when the electricity that voltage transformer YH is measured
It forces down when state threshold, if the sum of electric current that current transformer LH21, current transformer LH1 are measured and current transformer LH12
The absolute value of the difference of the electric current measured is more than maximum imbalance current, then assert the intermediate institute upper lefts AT site S and left neighbour AT institutes
Between contact net or upper left site S and sectionaliser FD2 between contact net occur short circuit.
Preferably, measure and control device order upper left net breaker DL21, upper right net breaker DL23, left neighbour AT institutes upper right net are disconnected
Road device DL12 and right neighbour AT institutes upper left net breaker DL32 trippings, disconnecting switch GK separating brakes, then order upper right net breaker DL23
It closes a floodgate with right neighbour AT institutes upper left net breaker DL32, after short trouble exclusion, then order disconnecting switch GK closes a floodgate, then upper left
Net breaker DL21 and left neighbour AT institutes upper right net breaker DL1 closes a floodgate, and system restores normal.
If it is further preferred that the sum of electric current that current transformer LH23, current transformer LH2 are measured and current transformer
The absolute value of the difference for the electric current that LH32 is measured is more than maximum imbalance current, then assert two FD2 of sectionaliser and right neighbour AT institutes
Between contact net occur short circuit.
It is further preferred that measure and control device order upper left net breaker DL21, upper right net breaker DL23, left neighbour AT institute are right
The breaker DL12 and right neighbour AT institutes upper left net breaker DL32 that surfs the Internet trips, disconnecting switch GK separating brakes, then the net open circuit of order upper left
Device DL21 and left neighbour AT institutes upper right net breaker DL12 closes a floodgate, and after short trouble exclusion, then order disconnecting switch GK closes a floodgate, so
Rear right online breaker DL23 and right neighbour AT institutes upper left net breaker DL1 closes a floodgate, and system restores normal.
The state threshold refers to contact net voltage drop as low as the voltage value for making train cisco unity malfunction, and existing motor-car takes
16.6kV。
The maximum imbalance current is by contact net unevenness, distribution capacity and current transformer measurement error etc.
It is caused, usual very little, close to 0.
The present invention operation principle be：Disconnecting switch is in parallel with sectionaliser, and when normal operation, disconnecting switch is closed a floodgate, will point
Section device bypass, while the upper cable of disconnecting switch keeps most short, then makes the inductance L of shunt circuit conducting wire minimum, train belt current i
Transient voltage Ldi/dt when passing through sectionaliser reaches minimum, or even close to 0, makes train electric current i successfully from the one of sectionaliser
End is transferred to the other end, to eliminate arcing condition.Under fault condition, using AT voltage and related three branches electric current
The Comparison for the current direction that mutual inductor measuring obtains comes the position of failure judgement generation.
Compared with prior art, the beneficial effects of the invention are as follows：
One, installation and is surfed the Internet at disconnecting switch nearby, is generated when can eliminate electric segmentation of the electrification train by intermediate AT institutes
Phenomenon of arc discharge avoids contact with the accident of line and sectionaliser burnt and thus cause bow net.
Two, it can find, distinguish accurately and in time, various contact net failures are isolated, while ensureing that fault-free section continues
Power supply, operation, reduce scope of power outage to the maximum extent, the extension for avoiding failure from influencing, and further increase Traction networks power supply
Reliability.
Three, the relevant apparatus investment being related to is less, easy to implement, both new line is convenient for use, and also allows for old line transformation.
Description of the drawings
Fig. 1 is the system schematic of the embodiment of the present invention.
Fig. 2 is the measure and control device input of the embodiment of the present invention, output relation figure.
Specific implementation mode
The invention will be further described with reference to the accompanying drawings and detailed description：Fig. 1 shows, one kind of the invention
Specific implementation mode is：A kind of electric railway AT institutes sectionaliser disconnecting switch measure and control device, the measure and control device are arranged in
Left neighbour AT institutes, right neighbour AT between intermediate AT institutes, the intermediate AT institute and contact net T, rail R, negative feeder F and left neighbour AT institutes,
The collectively constituted power supply system of electrified railway of right neighbour AT；Left neighbour AT self coupling become an AT1 contact net terminal draw after
It is divided into two-way, connecing for one FD1 left ends of sectionaliser is connected to by upper left net breaker DL10 and upper left cable SW10 nearby all the way
On net-fault T, the left neighbour AT of another way self coupling become an AT1 contact net terminal pass through upper right net breaker DL12 and upper right cable
SW12 is connected to nearby on the contact net T of one FD1 right ends of sectionaliser, one FD1 of sectionaliser be serially connected in left neighbour AT side contact
In net；Right neighbour AT self coupling become three AT3 contact net terminal draw after be divided into two-way, pass through upper left net breaker DL32 all the way
Be connected to nearby with upper left cable SW32 on the contact net T of three FD3 left ends of sectionaliser, the right neighbour AT of another way self coupling become three
The contact net terminal of AT3 is connected to three FD3 right ends of sectionaliser nearby by upper right net breaker DL34 and upper right cable SW34
On contact net T, three FD3 of sectionaliser be serially connected in right neighbour AT side contact net in；Intermediate AT self coupling become two AT2 contact
Net terminal is divided into two-way after drawing, and is connected to sectionaliser two nearby by upper left net breaker DL21 and upper left cable SW21 all the way
On the contact net T of FD2 left ends, the institute upper lefts referred to as AT site S, the contact net terminal of two AT2 of self coupling change of AT institutes among another way
It is connected on the contact net T of two FD2 right ends of sectionaliser by upper right net breaker DL23 and supply lines GD；One FD1 of sectionaliser, divide
Section two FD2 of device and three FD3 of sectionaliser can be such that train does not power off to pass through；With the concatenated current transformers of upper right net breaker DL12
It is denoted as LH12；It is denoted as LH21 with the upper left concatenated current transformers of net breaker DL21, it is concatenated with upper right net breaker DL23
Current transformer is denoted as LH23；It is denoted as LH32 with the upper left concatenated current transformers of net breaker DL32；Intermediate AT institutes contact net T
Voltage transformer between rail R is denoted as YH；Disconnecting switch GK is set at two FD2 of sectionaliser, and one end of disconnecting switch GK is logical
It crosses current transformer LH1 connected in series and upper cable SW1 is connected to nearby on the contact net T of two FD2 left ends of sectionaliser, be isolated
The other end of switch GK is connected to two FD2 right ends of sectionaliser nearby by current transformer LH2 connected in series and upper cable SW2
Contact net T on, disconnecting switch GK is normally closed.
Fig. 2 shows the input of measure and control device, output relation figures.The input terminal connection voltage transformer YH and electricity of measure and control device
The survey of current transformer LH12, current transformer LH21, current transformer LH1, current transformer LH2 and current transformer LH23
Measure end, the intermediate AT of output end connection upper left net breaker DL21, upper right net breaker DL23, disconnecting switch GK and a left side
Adjacent AT upper right net breaker DL12 and right neighbour AT upper left net breaker DL32 control terminal.
A kind of electric railway AT institutes sectionaliser disconnecting switch investigating method is:When the electricity that voltage transformer YH is measured
It forces down when state threshold, if the sum of electric current that current transformer LH21, current transformer LH1 are measured and current transformer LH12
The absolute value of the difference of the electric current measured be more than maximum imbalance current, then assert intermediate AT upper left site S and left neighbour AT
Between contact net or upper left site S and sectionaliser FD2 between contact net occur short circuit
At this point, measure and control device order upper left net breaker DL21, upper right net breaker DL23, left neighbour AT upper right net it is disconnected
Road device DL12 and right neighbour AT upper left net breaker DL32 trippings, disconnecting switch GK separating brakes, then order upper right net breaker
DL23 and right neighbour AT upper left net breaker DL32 close a floodgate, after short trouble exclusion, then order disconnecting switch GK closes a floodgate, so
The surf the Internet upper right net breaker DL1 of breaker DL21 and left neighbour AT institutes of rear left closes a floodgate, and system recovery is normally；If current transformer
The sum of electric current that LH23, current transformer LH2 are measured and the absolute value of the difference of the current transformer LH32 electric currents measured are more than
Maximum imbalance current, then assert two FD2 of sectionaliser and right neighbour AT between contact net occur short circuit, at this point, measure and control device
Order upper left net breaker DL21, upper right net breaker DL23, left neighbour AT upper right net breaker DL12 and right neighbour AT
Upper left net breaker DL32 trips, disconnecting switch GK separating brakes, then order upper left net breaker DL21 and left neighbour AT institutes upper right net break
Road device DL12 closes a floodgate, and after short trouble exclusion, then order disconnecting switch GK closes a floodgate, then upper right net breaker DL23 and right neighbour
AT upper left net breaker DL1 close a floodgate, system restores normal.
Claims (10)
1. a kind of electric railway AT institutes sectionaliser disconnecting switch measure and control device, the measure and control device be arranged in left neighbour AT institutes,
Right neighbour AT between intermediate AT institutes, which is total to contact net T, rail R, negative feeder F and left neighbour AT institutes, right neighbour AT
With composition power supply system of electrified railway；It is characterized in that：The measure and control device input terminal connection voltage transformer YH and
Current transformer LH12, current transformer LH21, current transformer LH1, current transformer LH2 and current transformer LH23 and
The measurement end of current transformer LH32, the intermediate AT of output end connection upper left net breaker DL21, upper right net breaker
DL23, disconnecting switch GK and left neighbour AT upper right net breaker DL12 and right neighbour AT upper left net breaker DL32 control
End processed.
2. electric railway AT institutes sectionaliser disconnecting switch measure and control device according to claim 1, which is characterized in that described
Left neighbour AT self coupling become an AT1 contact net terminal draw after be divided into two-way, pass through upper left net breaker DL10 and a left side all the way
Upper cable SW10 is connected to nearby on the contact net T of one FD1 left ends of sectionaliser, and another way passes through upper right net breaker DL12 and the right side
Upper cable SW12 is connected to nearby on the contact net T of one FD1 right ends of sectionaliser, and one FD1 of sectionaliser is serially connected in left neighbour AT institutes side
Contact net in.
3. electric railway AT institutes sectionaliser disconnecting switch measure and control device according to claim 1, which is characterized in that described
Right neighbour AT self coupling become three AT3 contact net terminal draw after be divided into two-way, pass through upper left net breaker DL32 and a left side all the way
Upper cable SW32 is connected to nearby on the contact net T of three FD3 left ends of sectionaliser, and another way passes through upper right net breaker DL34 and the right side
Upper cable SW34 is connected to nearby on the contact net T of three FD3 right ends of sectionaliser, and three FD3 of sectionaliser is serially connected in right neighbour AT institutes side
Contact net in.
4. electric railway AT institutes sectionaliser disconnecting switch measure and control device according to claim 1, which is characterized in that described
Intermediate AT self coupling become two AT2 contact net terminal draw after be divided into two-way, pass through upper left net breaker DL21 and a left side all the way
Upper cable SW21 is connected to nearby on the contact net T of two FD2 left ends of sectionaliser, and the institute upper lefts referred to as AT site S, another way passes through the right side
Online breaker DL23 and supply lines GD is connected on the contact net T of two FD2 right ends of sectionaliser.
5. electric railway AT institutes sectionaliser disconnecting switch measure and control device according to claim 4, which is characterized in that described
Disconnecting switch GK is set at two FD2 of sectionaliser, and one end of disconnecting switch GK passes through current transformer LH1 connected in series and online
Line SW1 is connected to nearby on the contact net T of two FD2 left ends of sectionaliser, the other end by current transformer LH2 connected in series and
Upper cable SW2 is connected to nearby on the contact net T of two FD2 right ends of sectionaliser, and disconnecting switch GK is normally closed.
6. the electric railway AT institutes sectionaliser disconnecting switch measure and control device according to Claims 2 or 3 or 4, feature exist
In one FD1 of sectionaliser, two FD2 of sectionaliser and three FD3 of sectionaliser can be such that train electrification passes through.
7. a kind of electric railway AT institutes sectionaliser disconnecting switch observing and controlling dress of any one described in the claims 1 to 6
The investigating method set, it is characterised in that:When the voltage that voltage transformer YH is measured is less than state threshold, if current transformer
The sum of electric current that LH21, current transformer LH1 are measured and the absolute value of the difference of the current transformer LH12 electric currents measured are more than
Maximum imbalance current, then assert the intermediate institute upper lefts AT site S and left neighbour AT between contact net or upper left site S and segmentation
Short circuit occurs for the contact net between device FD2.
8. electric railway AT institutes sectionaliser disconnecting switch investigating method according to claim 7, which is characterized in that observing and controlling
Device order upper left net breaker DL21, upper right net breaker DL23, left neighbour AT institutes upper right net breaker DL12 and right neighbour AT institutes
Upper left net breaker DL32 trips, disconnecting switch GK separating brakes, then order upper right net breaker DL23 and right neighbour AT institutes upper left net break
Road device DL32 closes a floodgate, and after short trouble exclusion, then order disconnecting switch GK closes a floodgate, then upper left net breaker DL21 and left neighbour
AT institutes upper right net breaker DL1 closes a floodgate, and system restores normal.
9. electric railway AT institutes sectionaliser disconnecting switch investigating method according to claim 7, which is characterized in that if electricity
The sum of electric current that current transformer LH23, current transformer LH2 are measured is exhausted with the difference of the current transformer LH32 electric currents measured
Maximum imbalance current is more than to value, then assert that the contact net generation between two FD2 of sectionaliser and right neighbour AT institutes is short-circuit.
10. electric railway AT institutes sectionaliser disconnecting switch investigating method according to claim 7, which is characterized in that survey
Control device order upper left net breaker DL21, upper right net breaker DL23, left neighbour AT institutes upper right net breaker DL12 and right neighbour AT
Institute upper left net breaker DL32 trips, disconnecting switch GK separating brakes, then order upper left net breaker DL21 and left neighbour AT institutes upper right net
Breaker DL12 closes a floodgate, and after short trouble exclusion, then order disconnecting switch GK closes a floodgate, then upper right net breaker DL23 and the right side
Adjacent AT institutes upper left net breaker DL1 closes a floodgate, and system restores normal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810973660.6A CN108808641B (en) | 2018-08-24 | 2018-08-24 | Measuring and controlling device and measuring and controlling method for isolating switch of sectionalizer of AT (automatic Transmission) of electrified railway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810973660.6A CN108808641B (en) | 2018-08-24 | 2018-08-24 | Measuring and controlling device and measuring and controlling method for isolating switch of sectionalizer of AT (automatic Transmission) of electrified railway |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108808641A true CN108808641A (en) | 2018-11-13 |
| CN108808641B CN108808641B (en) | 2024-07-05 |
Family
ID=64080943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810973660.6A Active CN108808641B (en) | 2018-08-24 | 2018-08-24 | Measuring and controlling device and measuring and controlling method for isolating switch of sectionalizer of AT (automatic Transmission) of electrified railway |
Country Status (1)
| Country | Link |
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| CN (1) | CN108808641B (en) |
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| CN111361416A (en) * | 2018-12-26 | 2020-07-03 | 中车唐山机车车辆有限公司 | Control method and control device of medium-voltage power supply system of train and train |
| CN112421761A (en) * | 2020-11-29 | 2021-02-26 | 西南交通大学 | Relay protection reconstruction self-healing method for hub traction power supply system |
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| CN112421761B (en) * | 2020-11-29 | 2022-10-14 | 西南交通大学 | Relay protection reconstruction self-healing method for hub traction power supply system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108808641B (en) | 2024-07-05 |
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