CN108808641B - Measuring and controlling device and measuring and controlling method for isolating switch of sectionalizer of AT (automatic Transmission) of electrified railway - Google Patents
Measuring and controlling device and measuring and controlling method for isolating switch of sectionalizer of AT (automatic Transmission) of electrified railway Download PDFInfo
- Publication number
- CN108808641B CN108808641B CN201810973660.6A CN201810973660A CN108808641B CN 108808641 B CN108808641 B CN 108808641B CN 201810973660 A CN201810973660 A CN 201810973660A CN 108808641 B CN108808641 B CN 108808641B
- Authority
- CN
- China
- Prior art keywords
- breaker
- adjacent
- sectionalizer
- internet surfing
- current transformer
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000005540 biological transmission Effects 0.000 title description 2
- 238000005259 measurement Methods 0.000 claims abstract description 26
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000010891 electric arc Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 230000007704 transition 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Gas-Insulated Switchgears (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The invention discloses a measurement and control device and a measurement and control method of an isolating switch of an AT sectionalizer of an electrified railway, and relates to the field of traction power supply measurement and control of alternating current electrified railways. The input end of the measurement and control device is connected with the voltage transformer of the middle AT, the left internet current transformer of the isolating switch, the right internet current transformer of the left adjacent AT and the measuring end of the left internet current transformer of the right adjacent AT, and the output end of the measurement and control device is connected with the left internet breaker, the right internet breaker and the isolating switch of the middle AT and the control ends of the right internet breaker of the left adjacent AT and the left adjacent internet breaker of the right adjacent AT. And judging the position of the fault by utilizing the comparison of the voltage of the middle AT and the current measured by the current transformers of the left branch and the right branch. The method is mainly used for eliminating and measuring and controlling the electric arc of the AT with a longer power supply line.
Description
Technical Field
The invention belongs to the technical field of traction power supply measurement and control of an alternating current electric railway.
Background
Compared with a direct power supply mode, the AT power supply mode of the electrified railway has stronger power supply capacity and longer power supply arm length, and can reduce electric split-phase and electroless areas, so that the AT power supply mode is almost selected by high-speed rails in China.
However, the mountains and rivers in China are numerous, which often makes the nearby arrangement of the sectionalizer of the overhead line station (AT) and the sectionalizer thereof difficult, even the AT must be pulled apart for a long distance, and some are as long as 2km, so that a long power supply line is required to be erected between the AT and the sectionalizer thereof. The larger the length of the power supply line and the contact net between the AT and the sectionalizer is, the larger the inductance is, and when the electrified train passes through the sectionalizer, the sudden transition of the train current between the section of power supply line and the contact net can cause overvoltage and arcing, the contact line can be burnt by the arcing, even the contact line is burnt, and accidents are caused.
Obviously, the technical problems to be solved are: under the normal operation condition, the arc-pulling phenomenon when the train passes through the sectionalizer far away from the AT is eliminated, and when the overhead line system fails, the sections of the failure occurrence inside and outside the power supply line range should be timely and accurately distinguished, and the failure is removed.
Disclosure of Invention
The invention aims to provide a measuring and controlling device and a measuring and controlling method for a sectionalizer isolation switch of an electrified railway AT, which can effectively solve the technical problem that a train generates arc discharge through a sectionalizer far away from the AT in normal operation, and meanwhile, when a contact net breaks down, the sections of the fault occurrence inside and outside the range of a power supply line should be timely and accurately distinguished and the fault is removed.
The aim of the invention is realized by the following technical scheme:
The measuring and controlling device is arranged in an intermediate AT place between a left adjacent AT place and a right adjacent AT place, and the intermediate AT place, a contact net T, a steel rail R, a negative feeder F, the left adjacent AT place and the right adjacent AT place form an electrified railway AT power supply system together; the input end of the measurement and control device is connected with the voltage transformer YH and the current transformer LH12, the current transformer LH21, the current transformer LH1, the current transformer LH2 and the measuring ends of the current transformer LH23 and the current transformer LH32, and the output end of the measurement and control device is connected with the control ends of the left upper network breaker DL21, the right upper network breaker DL23, the isolating switch GK, the right upper network breaker DL12 of the left adjacent AT and the left upper network breaker DL32 of the right adjacent AT of the middle AT.
The terminal of the autotransformer AT1 of the left-adjacent AT is led out and then is divided into two paths, one path is connected to the contact net T AT the left end of the sectionalizer FD1 nearby through a left upper net breaker DL10 and a left upper net wire SW10, and the other path is connected to the contact net T AT the right end of the sectionalizer FD1 nearby through a right upper net breaker DL12 and a right upper net wire SW12, and the sectionalizer FD1 is connected in series in the contact net beside the left-adjacent AT.
The contact network terminal of the auto-transformer three AT3 of the right-adjacent AT is led out and then is divided into two paths, one path is connected to the contact network T AT the left end of the sectionalizer three FD3 nearby through a left upper network breaker DL32 and a left upper network wire SW32, and the other path is connected to the contact network T AT the right end of the sectionalizer three FD3 nearby through a right upper network breaker DL34 and a right upper network wire SW34, and the sectionalizer three FD3 is connected in series to the contact network beside the right-adjacent AT.
The contact network terminal of the self-coupling transformer two AT2 in the middle AT is led out and then is divided into two paths, one path is closely connected to the contact network T AT the left end of the sectionalizer two FD2 through a left upper network breaker DL21 and a left upper network wire SW21, the contact network is called as an AT left upper network point S, and the other path is connected to the contact network T AT the right end of the sectionalizer two FD2 through a right upper network breaker DL23 and a power supply wire GD.
The two FD2 of the sectionalizer is provided with a disconnecting switch GK, one end of the disconnecting switch GK is connected to the contact net T at the left end of the two FD2 of the sectionalizer through a current transformer LH1 and an upper net wire SW1 which are connected in series, and the other end of the disconnecting switch GK is normally closed and is connected to the contact net T at the right end of the two FD2 of the sectionalizer through a current transformer LH2 and an upper net wire SW2 which are connected in series.
The first FD1, second FD2 and third FD3 segments are all capable of passing trains through. The aim of the invention is realized by the following technical scheme:
When the voltage measured by a voltage transformer YH is lower than a state threshold value, if the absolute value of the difference value between the sum of the currents measured by a current transformer LH21 and a current transformer LH1 and the current measured by a current transformer LH12 is larger than the maximum unbalanced current, the contact net between the upper left net point S of the middle AT and the upper left net point S of the adjacent AT or the contact net between the upper left net point S of the middle AT and the sectionalizer FD2 is determined to have short circuit.
Preferably, the measurement and control device commands the left internet surfing breaker DL21, the right internet surfing breaker DL23, the right internet surfing breaker DL12 of the left adjacent AT and the left internet surfing breaker DL32 of the right adjacent AT to trip, the disconnecting switch GK is opened, then commands the right internet surfing breaker DL23 and the left internet surfing breaker DL32 of the right adjacent AT to close, after the short circuit fault is removed, commands the disconnecting switch GK to close, then the left internet surfing breaker DL21 and the right internet surfing breaker DL1 of the left adjacent AT to close, and the system is restored to normal.
Further preferably, if the absolute value of the difference between the sum of the currents measured by the current transformers LH23 and LH2 and the current measured by the current transformer LH32 is greater than the maximum unbalanced current, it is determined that a short circuit occurs in the contact network between the two FD2 sectionalizers and the right AT.
Further preferably, the measurement and control device commands the left internet surfing breaker DL21, the right internet surfing breaker DL23, the right internet surfing breaker DL12 of the left adjacent AT and the left internet surfing breaker DL32 of the right adjacent AT to trip, the disconnecting switch GK is opened, then commands the left internet surfing breaker DL21 and the right internet surfing breaker DL12 of the left adjacent AT to close, after the short circuit fault is removed, commands the disconnecting switch GK to close, then the right internet surfing breaker DL23 and the left internet surfing breaker DL1 of the right adjacent AT to close, and the system is restored to normal.
The state threshold value refers to a voltage value that the voltage of the contact network is reduced to a voltage value that the train cannot work normally, and the current train takes 16.6kV.
The maximum unbalance current is caused by contact net unevenness, distributed capacitance, current transformer measurement errors and the like, and is usually small and close to 0.
The working principle of the invention is as follows: the isolating switch is connected with the sectionalizer in parallel, and in normal operation, the isolating switch is switched on to bypass the sectionalizer, meanwhile, the internet surfing line of the isolating switch is kept to be the shortest, so that the inductance L of a parallel loop wire is minimized, the transient voltage Ldi/dt of the train with current i passing through the sectionalizer is minimized, even approaches to 0, and the train current i is smoothly transferred from one end of the sectionalizer to the other end, thereby eliminating the arcing condition. Under the fault condition, the position of the fault is judged by utilizing the difference comparison between the voltage of the AT and the current directions measured by the current transformers of the three related branches.
Compared with the prior art, the invention has the beneficial effects that:
1. The isolating switch is installed and the network is accessed nearby, so that the arcing phenomenon generated when the electrified train passes through the electric segmentation of the intermediate AT can be eliminated, and the burning of the contact line and the segmenter and the accidents of the bow net caused by the burning are avoided.
2. The fault detection device can timely and accurately find, distinguish and isolate various contact net faults, simultaneously ensure that the fault-free section continues to supply power and operate, furthest reduce the power failure range, avoid the expansion of the fault influence and further improve the reliability of power supply of the traction net.
3. The related devices have the advantages of less investment and convenient implementation, and are convenient for the new line to be adopted and the old line to be transformed.
Drawings
FIG. 1 is a schematic system diagram of an embodiment of the present invention.
FIG. 2 is a graph of input and output relationships of a measurement and control device according to an embodiment of the present invention.
Detailed Description
The invention is further described in connection with the following drawings and detailed description: fig. 1 shows that one embodiment of the present invention is: the measuring and controlling device is arranged in an intermediate AT place between a left adjacent AT place and a right adjacent AT place, and the intermediate AT place, a contact net T, a steel rail R, a negative feeder F, the left adjacent AT place and the right adjacent AT place form an electrified railway AT power supply system together; the contact network terminal of the self-coupling AT1 of the left adjacent AT is led out and then is divided into two paths, one path is connected to the contact network T AT the left end of the sectionalizer one FD1 nearby through a left upper network breaker DL10 and a left upper network wire SW10, the contact network terminal of the self-coupling AT1 of the other path of self-coupling AT is connected to the contact network T AT the right end of the sectionalizer one FD1 nearby through a right upper network breaker DL12 and a right upper network wire SW12, and the sectionalizer one FD1 is connected in series to the contact network beside the left adjacent AT; the contact network terminal of the auto-transformer three AT3 of the right-adjacent AT is led out and then is divided into two paths, one path is connected to the contact network T AT the left end of the sectionalizer three FD3 nearby through a left upper network breaker DL32 and a left upper network wire SW32, the contact network terminal of the auto-transformer three AT3 of the other path of the auto-transformer three AT is connected to the contact network T AT the right end of the sectionalizer three FD3 nearby through a right upper network breaker DL34 and a right upper network wire SW34, and the sectionalizer three FD3 is connected in series to the contact network beside the right-adjacent AT; the overhead line terminal of the self-coupling transformer two AT2 in the middle AT is led out and then is divided into two paths, one path is closely connected to the overhead line T AT the left end of the sectionalizer two FD2 through a left upper line breaker DL21 and a left upper line wire SW21, and is called as an AT left upper net point S, and the overhead line terminal of the self-coupling transformer two AT2 in the middle AT is connected to the overhead line T AT the right end of the sectionalizer two FD2 through a right upper line breaker DL23 and a power supply line GD; the sectionalizer one FD1, the sectionalizer two FD2 and the sectionalizer three FD3 can all enable the train to pass without power off; the current transformer connected in series with the right upper network breaker DL12 is recorded as LH12; the current transformer connected in series with the left upper network breaker DL21 is marked as LH21, and the current transformer connected in series with the right upper network breaker DL23 is marked as LH23; the current transformer connected in series with the left upper network breaker DL32 is marked as LH32; the voltage transformer between the contact net T and the steel rail R of the middle AT is marked as YH; the sectionalizer two FD2 is provided with an isolating switch GK, one end of the isolating switch GK is connected to the contact net T at the left end of the sectionalizer two FD2 through a current transformer LH1 and a net-feeding wire SW1 which are connected in series, the other end of the isolating switch GK is connected to the contact net T at the right end of the sectionalizer two FD2 through a current transformer LH2 and a net-feeding wire SW2 which are connected in series, and the isolating switch GK is normally closed.
Fig. 2 shows an input-output relationship diagram of the measurement and control device. The input end of the measurement and control device is connected with the measuring ends of the voltage transformer YH, the current transformer LH12, the current transformer LH21, the current transformer LH1, the current transformer LH2 and the current transformer LH23, and the output end of the measurement and control device is connected with the control ends of the left upper network breaker DL21, the right upper network breaker DL23, the isolating switch GK, the right upper network breaker DL12 of the left adjacent AT and the left upper network breaker DL32 of the right adjacent AT of the middle AT.
When the voltage measured by a voltage transformer YH is lower than a state threshold value, if the absolute value of the difference value between the sum of the currents measured by a current transformer LH21 and a current transformer LH1 and the current measured by a current transformer LH12 is larger than the maximum unbalanced current, determining that a short circuit occurs between the upper left net point S of the middle AT and the upper left net point S of the left adjacent AT or between the upper left net point S and the sectionalizer FD2
AT this time, the measurement and control device commands the left internet surfing breaker DL21, the right internet surfing breaker DL23, the right internet surfing breaker DL12 of the left adjacent AT and the left internet surfing breaker DL32 of the right adjacent AT to trip, the disconnecting switch GK is opened, then commands the right internet surfing breaker DL23 and the left internet surfing breaker DL32 of the right adjacent AT to close, after the short circuit fault is removed, commands the disconnecting switch GK to close, then the left internet surfing breaker DL21 and the right internet surfing breaker DL1 of the left adjacent AT are closed, and the system is recovered to be normal; if the absolute value of the difference between the sum of the currents measured by the current transformer LH23 and the current transformer LH2 and the current measured by the current transformer LH32 is larger than the maximum unbalanced current, the contact network between the two FD2 sectionalizers and the right AT section is considered to be short-circuited, AT the moment, the measurement and control device commands the left upper network breaker DL21, the right upper network breaker DL23, the right upper network breaker DL12 of the left AT section and the left upper network breaker DL32 of the right AT section to trip, the isolating switch GK is opened, the left upper network breaker DL21 and the right upper network breaker DL12 of the left AT section are commanded to close, after the short-circuit fault is removed, the isolating switch GK is commanded to close, and then the left upper network breaker DL23 and the right upper network breaker DL1 of the right AT section are commanded to close, and the system is restored to normal.
Claims (5)
1. The measuring and controlling device is arranged in an intermediate AT place between a left adjacent AT place and a right adjacent AT place, and the intermediate AT place, a contact net T, a steel rail R, a negative feeder F, the left adjacent AT place and the right adjacent AT place form an electrified railway AT power supply system together; the method is characterized in that: the input end of the measurement and control device is connected with the voltage transformer YH and the current transformer LH12, the current transformer LH21, the current transformer LH1, the current transformer LH2 and the measuring ends of the current transformer LH23 and the current transformer LH32, and the output end of the measurement and control device is connected with the control ends of a left upper network breaker DL21, a right upper network breaker DL23, an isolating switch GK, a right upper network breaker DL12 of a left adjacent AT and a left upper network breaker DL32 of a right adjacent AT;
The terminal of the autotransformer AT1 of the left-adjacent AT is led out and then is divided into two paths, one path is connected to the contact net T AT the left end of the sectionalizer FD1 nearby through a left upper net breaker DL10 and a left upper net wire SW10, the other path is connected to the contact net T AT the right end of the sectionalizer FD1 nearby through a right upper net breaker DL12 and a right upper net wire SW12, and the sectionalizer FD1 is connected in series to the contact net beside the left-adjacent AT;
the contact network terminal of the auto-transformer three AT3 of the right-adjacent AT is led out and then divided into two paths, one path is connected to the contact network T AT the left end of the sectionalizer three FD3 nearby through a left upper network breaker DL32 and a left upper network wire SW32, and the other path is connected to the contact network T AT the right end of the sectionalizer three FD3 nearby through a right upper network breaker DL34 and a right upper network wire SW34, and the sectionalizer three FD3 is connected in series to the contact network beside the right-adjacent AT;
The overhead line terminal of the self-coupling transformer two AT2 in the middle AT is led out and then is divided into two paths, one path is closely connected to the overhead line T AT the left end of the sectionalizer two FD2 through a left upper line breaker DL21 and a left upper line wire SW21, and is called as an upper left net point S of the AT, and the other path is connected to the overhead line T AT the right end of the sectionalizer two FD2 through a right upper line breaker DL23 and a power supply line GD;
An isolating switch GK is arranged at the position of the two FD2 of the sectionalizer, one end of the isolating switch GK is closely connected to a contact net T at the left end of the two FD2 of the sectionalizer through a current transformer LH1 and an upper net wire SW1 which are connected in series with the isolating switch GK, the other end of the isolating switch GK is closely connected to the contact net T at the right end of the two FD2 of the sectionalizer through a current transformer LH2 and an upper net wire SW2 which are connected in series with the isolating switch GK;
The first FD1, second FD2 and third FD3 are all capable of passing trains through.
2. A measurement and control method based on the sectionalizer isolating switch measurement and control device of an electrified railway AT is characterized in that when the voltage measured by a voltage transformer YH is lower than a state threshold value, if the absolute value of the difference value between the sum of the currents measured by a current transformer LH21 and a current transformer LH1 and the current measured by a current transformer LH12 is larger than the maximum unbalanced current, a short circuit is considered to occur between a contact net between an upper left lattice point S of an intermediate AT and an adjacent upper left lattice point S and a contact net between a sectionalizer FD 2.
3. The measurement and control method according to claim 2, wherein the measurement and control device instructs the left internet surfing breaker DL21, the right internet surfing breaker DL23, the right internet surfing breaker DL12 of the left adjacent AT and the left internet surfing breaker DL32 of the right adjacent AT to trip, the disconnecting switch GK is opened, instructs the right internet surfing breaker DL23 and the left internet surfing breaker DL32 of the right adjacent AT to close, instructs the disconnecting switch GK to close after the short-circuit fault is removed, and instructs the left internet surfing breaker DL21 and the right internet surfing breaker DL1 of the left adjacent AT to close, so that the system is restored to normal.
4. The measurement and control method according to claim 2, wherein if the absolute value of the difference between the sum of the currents measured by the current transformers LH23 and LH2 and the current measured by the current transformer LH32 is greater than the maximum unbalanced current, it is determined that a short circuit occurs in the contact network between the two FD2 sectionalizers and the right AT.
5. The measurement and control method according to claim 2, wherein the measurement and control device instructs the left internet surfing breaker DL21, the right internet surfing breaker DL23, the right internet surfing breaker DL12 of the left adjacent AT and the left internet surfing breaker DL32 of the right adjacent AT to trip, the disconnecting switch GK is opened, instructs the left internet surfing breaker DL21 and the right internet surfing breaker DL12 of the left adjacent AT to close, instructs the disconnecting switch GK to close after the short-circuit fault is removed, and instructs the right internet surfing breaker DL23 and the left internet surfing breaker DL1 of the right adjacent AT to close, so that the system is restored to 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 CN108808641A (en) | 2018-11-13 |
| CN108808641B true 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 |
|---|---|
| CN (1) | CN108808641B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111361416B (en) * | 2018-12-26 | 2021-11-16 | 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 |
| CN112421761B (en) * | 2020-11-29 | 2022-10-14 | 西南交通大学 | A self-healing method for relay protection reconfiguration of pivot traction power supply system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208522455U (en) * | 2018-08-24 | 2019-02-19 | 成都尚华电气有限公司 | Electric railway AT institute sectionaliser disconnecting switch measure and control device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101478154A (en) * | 2008-01-06 | 2009-07-08 | 卢贺成 | Measures for solving series AC, DC earthing and short circuit and novel design of DC system |
| CN203039357U (en) * | 2012-11-26 | 2013-07-03 | 西南交通大学 | Section power supply and state measurement and control apparatus for parallel traction net at end of double-line railway |
| CN102963271B (en) * | 2012-11-26 | 2015-06-03 | 西南交通大学 | Section power supply and status measurement and control method of parallel-connected traction networks at tail end of double track railway |
| CN203093780U (en) * | 2013-01-30 | 2013-07-31 | 天津凯发电气股份有限公司 | Electric locomotive ground automatic neutral section passing system based on current detection |
| CN106183897B (en) * | 2016-09-23 | 2018-08-10 | 西南交通大学 | A kind of electric railway subregion institute's automatic neutral-section passing system and its control method |
| CN107627906A (en) * | 2017-09-08 | 2018-01-26 | 中国船舶重工集团公司第七〇二研究所 | A kind of railway contact line overlap formula electricity segmentation arc suppressing means and its method |
-
2018
- 2018-08-24 CN CN201810973660.6A patent/CN108808641B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208522455U (en) * | 2018-08-24 | 2019-02-19 | 成都尚华电气有限公司 | Electric railway AT institute sectionaliser disconnecting switch measure and control device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108808641A (en) | 2018-11-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2714329C1 (en) | System for automatic crossing of phases separation points for electrified sections of railways and method of administration of such system | |
| EP3216644B1 (en) | Distributed protection system for power supply at sections of electrified railway propulsion system | |
| CN105799553B (en) | A kind of electronic type ground automatic neutral-section passing device | |
| CN105034856B (en) | A kind of electric neutral section of attached wires of AC electrified railway intelligence | |
| CN110239398B (en) | A kind of in-phase power supply traction substation feeder protection tripping method | |
| CN102185285A (en) | Protection configuration method for converter valve in flexible direct current power transmission system | |
| CN107627906A (en) | A kind of railway contact line overlap formula electricity segmentation arc suppressing means and its method | |
| CN103625310B (en) | A kind of electric railway subregion institute's automatic neutral-section passing system and automatic passing over of neutral section method thereof | |
| CN106114294B (en) | A kind of non-shut-brake neutral-section passing system of EMU and fault recognition method | |
| CN108808641B (en) | Measuring and controlling device and measuring and controlling method for isolating switch of sectionalizer of AT (automatic Transmission) of electrified railway | |
| CN113135125B (en) | A through power supply system for electrified railway | |
| CN109031047B (en) | Fault detection device and method for electrified railway AT station | |
| CN103057439B (en) | Automatic switching passing neutral section system of electrified railway star damping switch | |
| CN101364727B (en) | An overvoltage suppressing device in the process of locomotive over-phase separation in traction power supply system | |
| CN109031046B (en) | A fault detection device and method for an electrified railway switching station | |
| CN203032416U (en) | A star-connection resistor set damping-type switch auto-switching phase break passing device for an electric railway | |
| CN202944220U (en) | Segmental power supply and protection system of autotransformer (AT) traction power network of electrified railway | |
| CN108790948B (en) | Measuring and controlling device and measuring and controlling method for bypass breaker of electrified railway AT | |
| CN206086435U (en) | Electric Railway sectioning post auto -passing phase separation system | |
| CN108909541B (en) | Power supply structure for AT of electrified railway | |
| CN208522455U (en) | Electric railway AT institute sectionaliser disconnecting switch measure and control device | |
| CN205395812U (en) | Electric Railway link up unloaded monitoring device of system of power supply | |
| CN103625309B (en) | A kind of electric railway automatic neutral-section passing system and automatic passing over of neutral section method thereof | |
| CN208736960U (en) | Catenary fault identification device for AT power supply system of electrified railway | |
| CN108909542B (en) | Power supply structure for AT of electrified railway |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |