CN110247365A - A kind of electric railway perforation power supply system and its fault section recognition methods - Google Patents
A kind of electric railway perforation power supply system and its fault section recognition methods Download PDFInfo
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- CN110247365A CN110247365A CN201910535758.8A CN201910535758A CN110247365A CN 110247365 A CN110247365 A CN 110247365A CN 201910535758 A CN201910535758 A CN 201910535758A CN 110247365 A CN110247365 A CN 110247365A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M3/00—Feeding power to supply lines in contact with collector on vehicles; Arrangements for consuming regenerative power
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- 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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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0092—Details of emergency protective circuit arrangements concerning the data processing means, e.g. expert systems, neural networks
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- Locating Faults (AREA)
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Abstract
The invention discloses a kind of electric railway perforation power supply system and its fault section recognition methods, belong to electrified railway power supply technical field.The fault section recognition methods specific steps are included in two-side feeding contact net and break down; in the case where the existing protective device tripping excision failure of traction substation; two-side feeding Traction networks fault section identification device sends reading data command simultaneously to each sectional collecting device, and remembers to send order moment t1；Each sectional collecting device remembers current time t after receiving reading data command, and the voltage, current effective value and the Current Voltage phase angle difference that record in the previous period Tm of current time to current time t are uploaded to two-side feeding Traction networks fault section identification device.After two-side feeding Traction networks fault section identification device receives each sectional collecting device data, is uprushed with current effective value and judge the section to break down with voltage, current effective value and the phase angle difference of the bust of voltage effective value generation latter two cycle of moment.
Description
Technical field
The invention belongs to attached wires of AC electrified railway traction power supply technical fields.
Background technique
Structure possessed by monophase system is simple, construction cost is low, with and it is easy to maintain the advantages that, determine electrical
Change railway and generallys use single phase industrial frequence alternating current as railway locomotive power supply.And electric system wishes that all loads all take from power grid
With the fundamental current of three-phase symmetrical, to make full use of equipment, the capacity of route reduces reactive current and harmonic current to system
Harm.To meet the requirement, electric railway uses the scheme of phase sequence rotation, segmentation split-phase power supply, along the railway every 20-
25km is as a power supply section, and each section is successively respectively by the not cophase supply in power grid, and setting 30m is left between each section
Right split phase segment, and split-phase is carried out by neutral section.When the locomotive load run on the section that each phase is powered respectively is identical,
It can make the balance of electric system three-phase load in a large range.
But since the size of the traction load of each section can not be identical at any time, split-phase segmentation scheme is only certain
The influence of three-phase imbalance is alleviated in degree, without fundamentally solving the single-phase electricity consumption of railway load to entire utility network
It influences.Electric railway is forced to modify design scheme due to the problem of influencing power quality, increases investment, situation passively feelings
Condition happens occasionally.
Simultaneously, because the presence of electric neutral section, when locomotive operation is to a power supply segment ends, it is necessary to which process is moved back
The operation of a series of complex such as grade, power-off slides into next section and restores to operate normally again item by item, this had both increased locomotive behaviour
The complexity of work, while the raising of locomotive running speed and the performance of tractive force are seriously constrained again.
For this purpose, there is expert to propose cophase supply technology, cophase supply device, traction substation are installed additional in traction substation
It exports left and right arms contact net and uses same power voltage supply, cancel and draw exported split-phase.When a railway completely uses same phase
When power supply, it is achieved that perforation cophase supply, all fronts no phase separation is conducive to train maintenance and advances at utmost speed, improves transport power.Perforation
In the place of external power supply weakness, traction load is not king-sized railway, such as Qinghai-Tibet Railway for (bilateral) power supply, is penetrated through (double
Side) it powers and supply arm can be made to lengthen, the investment of external power supply and traction substation is greatly saved, after supply arm lengthens, it is necessary to
Supply arm is segmented, so that fault section can be quickly found out after failure, be isolated.
Summary of the invention
The purpose of the present invention is overcome the deficiencies in the prior art, provide a kind of electric railway perforation power supply system and its therefore
Hinder section recognition methods, it can be efficiently solved breaks down in two-side feeding contact net, the existing protective device of traction substation
In the case where tripping excision failure, fault section is identified, the technical issues of isolated fault.
The purpose of the present invention adopts the following technical scheme that
A kind of electric railway perforation power supply system, it includes at least two traction power transformations that electric railway, which penetrates through power supply system,
And two traction become administrative section in contact net T, rail R, each traction substation respectively with contact net T, rail R phase
Connection, two traction substations are labeled as traction substation SS1, traction substation SS2 from left to right；It traction substation SS1 and leads
Draw the contact net between electric substation SS2 and be divided into n+1 power supply section, two power supply sections are isolated by sectionaliser, are successively marked
For section T1, section T2, section T3 ..., section Tn, section Tn+1；The sectionaliser being equipped between section T1 and section T2 is denoted as
GJ1, the sectionaliser being equipped between section T2 and section T3 are denoted as GJ2 ..., the sectionaliser being equipped between section Tn and section Tn+1
It is denoted as GJn, n≤2；Between each sectionaliser in corresponding power supply section, electric isolating switch G1 in parallel respectively, it is electronic every
It leaves and closes G2 ..., electric isolating switch Gn；When normal operation, the electric isolating switch G1, electric isolating switch G2 ..., electricity
Dynamic disconnecting switch Gn is closed, and constitutes perforation power supply system；It is characterized by: in the electric isolating switch G1, electronic isolation
In the circuit switch G2 ..., electric isolating switch Gn, concatenation current transformer LH1, current transformer LH2 ..., electric current are mutual respectively
Sensor LHn；In the current transformer LH1 of each power supply section, current transformer LH2 ..., current transformer LHn, respectively
Sectional collecting device RTU1, sectional collecting device RTU2 are accessed ..., sectional collecting device RTUn；They sample each power supply respectively
The secondary side current of section, and identified and filled by the contact net fault section that optical-fibre channel and traction substation penetrate through power supply system
Set D1, contact net fault section identification device D2 is communicated；Between each sectionaliser corresponding right arm contact net T and rail R
And voltage transformer YH1 is met, and voltage transformer YH2 ..., voltage transformer YHn；And they are accessed into corresponding segmentation and is adopted
Acquisition means RTU1, sectional collecting device RTU2 ..., in sectional collecting device RTUn；Contact net fault section identification device D1 connects
The position signal of the right supply arm feeder breaker DL12 of traction substation SS1 is connect, contact net fault section identification device D2 connects
Connect the position signal of the left supply arm feeder breaker DL21 of traction substation SS2；Each perforation power supply system contact net faulty section
Section identification device and each sectional collecting device carry out information command transmission by optical-fibre channel respectively.
In perforation power supply system contact net event occurs for a kind of electric railway perforation power supply system fault section recognition methods
Barrier, traction substation SS1 or traction substation SS2 are in the case where existing protective device trips excision failure, perforation power supply system
Sectional collecting device of the contact net fault section identification device D1 or contact net fault section identification device D2 of system to each segmentation
Reading data command is sent simultaneously, and remembers to send order moment t1；The sectional collecting device being respectively segmented, which receives, reads data life
Remember current time t after order, and by the voltage, current effective value and the electric current that are recorded in the previous period Tm of current time t,
Phase difference of voltage is uploaded to the contact net fault section identification device of perforation power supply system.Penetrate through power supply system contact net faulty section
After section identification device D1 or contact net fault section identification device D2 receives the sectional collecting device data of each segmentation, have with electric current
Valid value is uprushed, and voltage, current effective value and phase angle difference the judgement generation of latter two cycle of moment occur with the bust of voltage effective value
The section of failure:
(1) phase angle difference judgment method: the Current Voltage phase angle that the sectional collecting device at the section both ends broken down measures
Poor symbol is on the contrary, such as failure occurs in section T2, then the sectional collecting device RTU1 and sectional collecting device at the both ends section T2
The phase angle difference symbol that RTU2 is measured is on the contrary, the phase angle difference symbol and sectional collecting device RTU1 that sectional collecting device RTU12 is measured
It is identical；Sectional collecting device RTU3 ..., the phase angle difference symbol that measures of sectional collecting device RTUn, sectional collecting device RTU21 with
Sectional collecting device RTU2 is identical；
(2) voltage effective value diagnostic method: in most cases, the sectional collecting device at the section both ends broken down is surveyed
Voltage effective value be it is all measure it is two the smallest in voltage, such as failure occur in section T2, the then segmentation of section T2
The current effective value that acquisition device RTU12 is measured is greater than the voltage effective value that sectional collecting device RTU1 is measured；Piecewise acquisition dress
It sets the voltage effective value that RTU21 is measured and is greater than the voltage effective value that sectional collecting device RTUn is measured, sectional collecting device RTUn
The voltage effective value measured is greater than the voltage effective value that sectional collecting device RTUn-1 is measured ..., sectional collecting device RTU3 is surveyed
The voltage effective value obtained is greater than the voltage effective value that sectional collecting device RTU2 is measured.
(3) current effective value diagnostic method: in most cases, the section both ends sectional collecting device to break down measures
Current effective value it is different big, for example failure occurs in section T2, then the sectional collecting device RTU1 of section T2 and segmentation are adopted
The current effective value that acquisition means RTU2 is measured is different big, and the current effective value that sectional collecting device RTU12 is measured is adopted with segmentation
Acquisition means RTU1 is identical；Sectional collecting device RTU3 ..., the electricity that measures of sectional collecting device RTUn, sectional collecting device RTU21
It is identical as sectional collecting device RTU2 to flow virtual value；
(4) above-mentioned (1), (2), (3) result verify mutually, if equally, it is with a high credibility；If (2), (3) are not
It can sentence out as a result, then using the result of (1) as conclusion.
Preferably, the period Tm is specially [t-tP, t] and the second, wherein t is that sectional collecting device receives contact net failure
At the time of section identification device signal, tPFor supply arm relay protection longest actuation time.
Preferably, the moment t1 is specially to penetrate through power supply system contact net fault section identification device D1 or contact net
The correspondence electric substation feeder breaker of fault section identification device D2 detection disconnects moment, contact net fault section identification device D1
The disconnection moment of breaker DL12 is detected, contact net fault section identification device D2 detects the disconnection moment of breaker DL21.Into
One step preferably, the identification two-side feeding Traction networks fault section method, which is characterized in that the voltage, electric current are effective
Value and Current Voltage phase angle difference are specially that each sectional collecting device is effective every 5ms (1/4 period) calculating primary voltage electric current
Value and phase, Current Voltage phase angle difference are equal to the difference that current phase calculated subtracts voltage-phase.
Compared with prior art, the beneficial effects of the present invention are:
One, electric current, the voltage transformer electric current being arranged at present invention acquisition contact net segmentation carry out contact net fault section
Identification and fault location, quickly every failure, the extension for avoiding failure from influencing further increases the reliability of Traction networks power supply.
Two, the present invention is uprushed the synchronous each acquisition device data in position by identification voltage die and electric current, simple and reliable, is grasped
The property made is strong.
Three, method of the invention is suitable for single line direct-furnish or AT electric railway, multiple line direct-furnish or AT electric railway.
Detailed description of the invention
Fig. 1 is basic procedure schematic diagram described in the embodiment of the present invention one.
Fig. 2 is system structure diagram described in the embodiment of the present invention two.
Specific embodiment
The working principle of the invention is: breaking down in two-side feeding contact net, the existing protective device of traction substation is jumped
In the case that lock cuts off failure, two-side feeding Traction networks fault section identification device sends reading to each sectional collecting device simultaneously
Data command, and remember to send order moment t1；Each sectional collecting device remembers current time t after receiving reading data command,
And voltage, current effective value and the Current Voltage phase angle that will be recorded in the previous period Tm of current time to current time t
Difference is uploaded to two-side feeding Traction networks fault section identification device.Two-side feeding Traction networks fault section identification device receives each point
Section acquisition device data after, with current effective value uprush with the bust of voltage effective value occur latter two cycle of moment voltage,
Current effective value and phase angle difference judge the section to break down.
Embodiment one
As shown in Figure 1, the embodiment of the invention provides a kind of electric railways to penetrate through power supply system fault section identification side
Method breaks down in perforation power supply system contact net, and traction substation SS1 or traction substation SS2 are jumped in existing protective device
In the case that lock cuts off failure, contact net fault section identification device D1 or the identification of contact net fault section of power supply system are penetrated through
Device D2 sends reading data command simultaneously to the sectional collecting device of each segmentation, and remembers to send order moment t1；Each segmentation
Sectional collecting device receive read data command after remember current time t, and will be in the previous period Tm of current time t
Voltage, current effective value and electric current, the phase difference of voltage of record are uploaded to the contact net fault section identification of perforation power supply system
Device.Perforation power supply system contact net fault section identification device D1 or contact net fault section identification device D2 receives each segmentation
Sectional collecting device data after, with current effective value uprush with the bust of voltage effective value occur latter two cycle of moment electricity
Pressure, current effective value and phase angle difference judge the section to break down:
(1) phase angle difference judgment method: the Current Voltage phase angle that the sectional collecting device at the section both ends broken down measures
Poor symbol is on the contrary, such as failure occurs in section T2, then the sectional collecting device RTU1 and sectional collecting device at the both ends section T2
The phase angle difference symbol that RTU2 is measured is on the contrary, the phase angle difference symbol and sectional collecting device RTU1 that sectional collecting device RTU12 is measured
It is identical；Sectional collecting device RTU3 ..., the phase angle difference symbol that measures of sectional collecting device RTUn, sectional collecting device RTU21 with
Sectional collecting device RTU2 is identical；
(2) voltage effective value diagnostic method: in most cases, the sectional collecting device at the section both ends broken down is surveyed
Voltage effective value be it is all measure it is two the smallest in voltage, such as failure occur in section T2, the then segmentation of section T2
The current effective value that acquisition device RTU12 is measured is greater than the voltage effective value that sectional collecting device RTU1 is measured；Piecewise acquisition dress
It sets the voltage effective value that RTU21 is measured and is greater than the voltage effective value that sectional collecting device RTUn is measured, sectional collecting device RTUn
The voltage effective value measured is greater than the voltage effective value that sectional collecting device RTUn-1 is measured ..., sectional collecting device RTU3 is surveyed
The voltage effective value obtained is greater than the voltage effective value that sectional collecting device RTU2 is measured.
(3) current effective value diagnostic method: in most cases, the section both ends sectional collecting device to break down measures
Current effective value it is different big, for example failure occurs in section T2, then the sectional collecting device RTU1 of section T2 and segmentation are adopted
The current effective value that acquisition means RTU2 is measured is different big, and the current effective value that sectional collecting device RTU12 is measured is adopted with segmentation
Acquisition means RTU1 is identical；Sectional collecting device RTU3 ..., the electricity that measures of sectional collecting device RTUn, sectional collecting device RTU21
It is identical as sectional collecting device RTU2 to flow virtual value；
(4) above-mentioned (1), (2), (3) result verify mutually, if equally, it is with a high credibility；If (2), (3) are not
It can sentence out as a result, then using the result of (1) as conclusion.
In embodiments of the present invention, the period Tm is specially [t-tP, t] and the second, wherein t receives for sectional collecting device
At the time of fault section identification device signal, tPFor supply arm relay protection longest actuation time.The moment t1 is specially
The correspondence electric substation feeder breaker of two-side feeding Traction networks fault section identification device detection disconnects the moment, and D1 detects breaker
The disconnection moment of DL12, D2 detect the disconnection moment of breaker DL21.
The voltage, current effective value and Current Voltage phase angle difference are specially each sectional collecting device every 5ms (1/4
Period) primary voltage current effective value and phase are calculated, Current Voltage phase angle difference is equal to current phase calculated and subtracts voltage
The difference of phase.
Therefore, the current transformer electric current being arranged at acquisition contact net segmentation described in the embodiment of the present invention carries out contact net
Fault section identification, quickly every failure, the extension for avoiding failure from influencing further increases the reliability of Traction networks power supply.It is logical
It crosses identification electric current to uprush each acquisition device data synchronous with voltage die position, simple and reliable, strong operability.Method is suitable for single
Line direct-furnish or AT electric railway, multiple line direct-furnish or AT electric railway.
Embodiment two
It is led as shown in Fig. 2, the embodiment of the invention provides electric railway perforation power supply systems including at least two
Draw electric substation and two traction become it is administrative in contact net T, rail R, each traction substation respectively with contact net T, steel
Rail R is connected, and two traction substations are labeled as traction substation SS1, traction substation SS2 from left to right；Traction substation SS1
Contact net between traction substation SS2 is divided into n+1 power supply section, and two power supply sections are isolated by sectionaliser, successively
Labeled as section T1, section T2, section T3 ..., section Tn, section Tn+1；The sectionaliser being equipped between section T1 and section T2
It is denoted as GJ1, the sectionaliser being equipped between section T2 and section T3 is denoted as GJ2 ..., point being equipped between section Tn and section Tn+1
Section device is denoted as GJn, n≤2；Between each sectionaliser in corresponding power supply section, electric isolating switch G1 in parallel, electric respectively
Dynamic disconnecting switch G2 ..., electric isolating switch Gn；When normal operation, the electric isolating switch G1, electric isolating switch
G2 ..., electric isolating switch Gn are closed, and constitute perforation power supply system；It is characterized by: in the electric isolating switch G1,
In the circuit electric isolating switch G2 ..., electric isolating switch Gn, current transformer LH1, current transformer are concatenated respectively
LH2 ..., current transformer LHn；It is described it is each power supply section current transformer LH1, current transformer LH2 ..., electric current is mutual
In sensor LHn, it is respectively connected to sectional collecting device RTU1, sectional collecting device RTU2 ..., sectional collecting device RTUn；They
The secondary side current of each power supply section is sampled respectively, and the contact net of power supply system is penetrated through by optical-fibre channel and traction substation
Fault section identification device D1, contact net fault section identification device D2 are communicated；In the corresponding right arm contact of each sectionaliser
Between net T and rail R and voltage transformer YH1, voltage transformer YH2 are met ..., voltage transformer YHn；And they are accessed each
Self-corresponding sectional collecting device RTU1, sectional collecting device RTU2 ..., in sectional collecting device RTUn；Contact net faulty section
The position signal of the right supply arm feeder breaker DL12 of section identification device D1 connection traction substation SS1, contact net faulty section
The position signal of the left supply arm feeder breaker DL21 of section identification device D2 connection traction substation SS2；Each perforation power supply system
System contact net fault section identification device and each sectional collecting device carry out information command transmission by optical-fibre channel respectively.Cause
This, electric railway described in the embodiment of the present invention penetrates through (bilateral) power supply system and passes through the electricity of setting at acquisition contact net segmentation
Current transformer electric current carries out the identification of contact net fault section, and quickly every failure, the extension for avoiding failure from influencing is further increased
The reliability of Traction networks power supply.It is simple and reliable by identifying that electric current is uprushed each acquisition device data synchronous with voltage die position,
Strong operability.Method is suitable for single line direct-furnish or AT electric railway, multiple line direct-furnish or AT electric railway.
Claims (5)
1. a kind of electric railway penetrates through power supply system, the electric railway perforation power supply system includes that at least two tractions become
Contact net T, rail R in electric institute and two administrative section of traction changes, each traction substation respectively with contact net T, rail R
It is connected, two traction substations are labeled as traction substation SS1, traction substation SS2 from left to right；Traction substation SS1 and
Contact net between traction substation SS2 is divided into n+1 power supply section, and two power supply sections are isolated by sectionaliser, are successively marked
It is denoted as section T1, section T2, section T3 ..., section Tn, section Tn+1；The sectionaliser note being equipped between section T1 and section T2
For GJ1, the sectionaliser being equipped between section T2 and section T3 is denoted as GJ2 ..., the segmentation being equipped between section Tn and section Tn+1
Device is denoted as GJn, n≤2；Between each sectionaliser in corresponding power supply section, electric isolating switch G1 in parallel, electronic respectively
Disconnecting switch G2 ..., electric isolating switch Gn；When normal operation, the electric isolating switch G1, electric isolating switch G2 ...,
Electric isolating switch Gn is closed, and constitutes perforation power supply system；It is characterized by: in the electric isolating switch G1, it is electronic every
It leaves and closes G2 ..., in the circuit electric isolating switch Gn, concatenate current transformer LH1, current transformer LH2 ..., electric current respectively
Mutual inductor LHn；In the current transformer LH1 of each power supply section, current transformer LH2 ..., current transformer LHn, point
Not Jie Ru sectional collecting device RTU1, sectional collecting device RTU2 ..., sectional collecting device RTUn；They sample each confession respectively
The secondary side current of electric section, and identified by the contact net fault section that optical-fibre channel and traction substation penetrate through power supply system
Device D1, contact net fault section identification device D2 are communicated；The corresponding right arm contact net T of each sectionaliser and rail R it
Between and meet voltage transformer YH1, voltage transformer YH2 ..., voltage transformer YHn；And they are accessed into corresponding segmentation
Acquisition device RTU1, sectional collecting device RTU2 ..., in sectional collecting device RTUn；Contact net fault section identification device D1
Connect the position signal of the right supply arm feeder breaker DL12 of traction substation SS1, contact net fault section identification device D2
Connect the position signal of the left supply arm feeder breaker DL21 of traction substation SS2；Each perforation power supply system contact net failure
Section identification device and each sectional collecting device carry out information command transmission by optical-fibre channel respectively.
2. a kind of electric railway penetrates through the recognition methods of power supply system fault section, specific steps are included in perforation power supply system and connect
Net-fault breaks down, traction substation SS1 or traction substation SS2 in the case where existing protective device trips excision failure,
The contact net fault section identification device D1 or contact net fault section identification device D2 of power supply system are penetrated through to point of each segmentation
Section acquisition device sends reading data command simultaneously, and remembers to send order moment t1；The sectional collecting device being respectively segmented receives
Current time t is remembered after reading data command, and the voltage, the electric current that record in the previous period Tm of current time t are had
Valid value and electric current, phase difference of voltage are uploaded to the contact net fault section identification device of perforation power supply system.Penetrate through power supply system
Contact net fault section identification device D1 or contact net fault section identification device D2 receives the sectional collecting device number of each segmentation
According to rear, with current effective value uprush with the bust of voltage effective value occur the voltage of latter two cycle of moment, current effective value and
Phase angle difference judges the section to break down:
(1) phase angle difference judgment method: the Current Voltage phase angle difference symbol that the sectional collecting device at the section both ends broken down measures
Number on the contrary, such as failure occurs in section T2, then the sectional collecting device RTU1 and sectional collecting device RTU2 at the both ends section T2
The phase angle difference symbol that measures is on the contrary, the phase angle difference symbol that measures of sectional collecting device RTU12 is identical as sectional collecting device RTU1；
Sectional collecting device RTU3 ..., the phase angle difference symbol that measures of sectional collecting device RTUn, sectional collecting device RTU21 and segmentation
Acquisition device RTU2 is identical；
(2) voltage effective value diagnostic method: in most cases, what the sectional collecting device at the section both ends broken down measured
Voltage effective value be it is all measure two the smallest in voltage, for example failure occurs in section T2, then the piecewise acquisition of section T2
The current effective value that device RTU12 is measured is greater than the voltage effective value that sectional collecting device RTU1 is measured；Sectional collecting device
The voltage effective value that RTU21 is measured is greater than the voltage effective value that sectional collecting device RTUn is measured, and sectional collecting device RTUn is surveyed
The voltage effective value obtained is greater than the voltage effective value that sectional collecting device RTUn-1 is measured ..., sectional collecting device RTU3 is measured
Voltage effective value be greater than the voltage effective value that measures of sectional collecting device RTU2.
(3) current effective value diagnostic method: in most cases, the electricity that the section both ends sectional collecting device to break down measures
It is different big to flow virtual value, for example failure occurs in section T2, then the sectional collecting device RTU1 of section T2 and piecewise acquisition fill
Set current effective value and the piecewise acquisition dress that the current effective value that RTU2 is measured is different big, and sectional collecting device RTU12 is measured
It is identical to set RTU1；Sectional collecting device RTU3 ..., the electric current that measures of sectional collecting device RTUn, sectional collecting device RTU21 has
Valid value is identical as sectional collecting device RTU2；
(4) above-mentioned (1), (2), (3) result verify mutually, if equally, it is with a high credibility；If (2), (3) cannot be sentenced
Out as a result, then using the result of (1) as conclusion.
3. a kind of electric railway according to claim 2 penetrates through the recognition methods of power supply system fault section, feature exists
In: the period Tm is specially [t-tP, t] and the second, wherein t is that sectional collecting device receives contact net fault section identification device
At the time of signal, tPFor supply arm relay protection longest actuation time.
4. a kind of electric railway according to claim 1 penetrates through the recognition methods of power supply system fault section, feature exists
In: the moment t1 is specially to penetrate through power supply system contact net fault section identification device D1 or the identification of contact net fault section
The correspondence electric substation feeder breaker of device D2 detection disconnects the moment, and contact net fault section identification device D1 detects breaker
The disconnection moment of DL12, contact net fault section identification device D2 detect the disconnection moment of breaker DL21.
5. a kind of electric railway according to claim 1 penetrates through the recognition methods of power supply system fault section, feature exists
In: the voltage, current effective value and electric current, phase difference of voltage are specially that each sectional collecting device calculates once every 5ms
Effective value and phase, Current Voltage phase angle difference are equal to the difference that current phase calculated subtracts voltage-phase.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110605999A (en) * | 2019-09-25 | 2019-12-24 | 中铁第一勘察设计院集团有限公司 | Measurement and control protection system and method of through type in-phase power supply network |
| CN110606000A (en) * | 2019-09-25 | 2019-12-24 | 中铁第一勘察设计院集团有限公司 | Contact network short-circuit protection system and method of through type in-phase power supply system |
| CN110979105A (en) * | 2019-12-24 | 2020-04-10 | 中铁二院工程集团有限责任公司 | Design method for external power supply access scheme of through bilateral traction power supply system |
| CN114019307A (en) * | 2021-11-03 | 2022-02-08 | 国能朔黄铁路发展有限责任公司 | Station contact network fault positioning method and device and monitoring equipment |
| CN114094547A (en) * | 2021-10-27 | 2022-02-25 | 南京南瑞继保电气有限公司 | Protection method and protection device for compound line direct supply traction network |
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| CN110605999B (en) * | 2019-09-25 | 2023-06-27 | 中铁第一勘察设计院集团有限公司 | Measurement and control protection system and method for through type in-phase power supply network |
| CN110606000B (en) * | 2019-09-25 | 2023-08-04 | 中铁第一勘察设计院集团有限公司 | Contact net short-circuit protection system and method of through type in-phase power supply system |
| CN110979105A (en) * | 2019-12-24 | 2020-04-10 | 中铁二院工程集团有限责任公司 | Design method for external power supply access scheme of through bilateral traction power supply system |
| CN110979105B (en) * | 2019-12-24 | 2022-06-14 | 中铁二院工程集团有限责任公司 | Design method for external power supply access scheme of through bilateral traction power supply system |
| CN114094547A (en) * | 2021-10-27 | 2022-02-25 | 南京南瑞继保电气有限公司 | Protection method and protection device for compound line direct supply traction network |
| CN114094547B (en) * | 2021-10-27 | 2023-09-08 | 南京南瑞继保电气有限公司 | Protection method and protection device for compound line direct-supply traction network |
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| CN114019307B (en) * | 2021-11-03 | 2024-07-02 | 国能朔黄铁路发展有限责任公司 | Station yard contact net fault positioning method, device and monitoring equipment |
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