KR101743725B1 - section over and stop-protection system for train in power supply and insulation section - Google Patents

section over and stop-protection system for train in power supply and insulation section Download PDF

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Publication number
KR101743725B1
KR101743725B1 KR1020160000792A KR20160000792A KR101743725B1 KR 101743725 B1 KR101743725 B1 KR 101743725B1 KR 1020160000792 A KR1020160000792 A KR 1020160000792A KR 20160000792 A KR20160000792 A KR 20160000792A KR 101743725 B1 KR101743725 B1 KR 101743725B1
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KR
South Korea
Prior art keywords
section
active tag
vehicle
insulation
signal
Prior art date
Application number
KR1020160000792A
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Korean (ko)
Inventor
김태도
김영배
박세영
송정훈
서봉진
윤형기
차정훈
박찬영
하병용
박현진
이학용
장동희
이상호
Original Assignee
서울메트로
케이아이씨시스템즈 (주)
엘지히다찌 주식회사
(주)소노비젼
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Application filed by 서울메트로, 케이아이씨시스템즈 (주), 엘지히다찌 주식회사, (주)소노비젼 filed Critical 서울메트로
Priority to KR1020160000792A priority Critical patent/KR101743725B1/en
Application granted granted Critical
Publication of KR101743725B1 publication Critical patent/KR101743725B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0038—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to sensors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L5/00—Current collectors for power supply lines of electrically-propelled vehicles
    • B60L5/18—Current collectors for power supply lines of electrically-propelled vehicles using bow-type collectors in contact with trolley wire
    • B60L5/22—Supporting means for the contact bow
    • B60L5/24—Pantographs
    • 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
    • B60M3/04—Arrangements for cutting in and out of individual track sections
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2250/00—Driver interactions
    • B60L2250/16—Driver interactions by display
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Current-Collector Devices For Electrically Propelled Vehicles (AREA)

Abstract

The present invention is characterized in that the second and third active tags for confirming the positions of the rearward and forward portions of the power feeding section or the insulating section are installed before and after the feeding / insulation section of the electric cable line on which the railway car is running, The first active tag is installed so as to send a notification to the engineer by detecting the start point of the on-line third run for the operation of the driver for the first, second, and third active tags, And the RFID reader is connected to a control unit for controlling the driving range of the driving force, the detection of the power feeding / insulation classification period and the broadcasting of the cab notice broadcast, thereby preventing the stopping in the power feeding / And more particularly to a railway vehicle section overhead and a stopping protection system in a power transmission / insulation section.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a railway vehicle section overload /

The present invention is characterized in that the second and third active tags for confirming the positions of the rearward and forward portions of the power feeding section or the insulating section are installed before and after the feeding / insulation section of the electric cable line on which the railway car is running, The first active tag is installed so as to send a notification to the engineer by detecting the start point of the on-line third run for the operation of the driver for the first, second, and third active tags, And the RFID reader is connected to a control unit for controlling the driving range of the driving force, the detection of the power feeding / insulation classification period and the broadcasting of the cab notice broadcast, thereby preventing the stopping in the power feeding / And more particularly to a railway vehicle section overhead and a stopping protection system in a power transmission / insulation section.

In general, a section (division) is a system that divides the feed system of a catenary to limit the feed stop period when an accident occurs in a part of a catenary or when there is a need for an electrostatic operation for daily maintenance, And the air section which is applied to the power supply section section.

At this time, the space where the air section and the power feeding section overlap each other is electrically separated by air, so that the air section is installed at a predetermined interval in the catenary line.

The power collector (PANTOGRAPH) is equipped with a current collecting part which contacts with a tether (wire) on a roof which is woven in a loosely woven frame. It uses a method of pushing up the wire so that the wire contacts with the force of spring or compressed air , The former is called the spring-up type, and the latter is called the air-rising type.

In addition, the division section is a section distinguished by the section, and independently receives the current from the substation, and has a feeding section section and an insulation section section that are set so as not to interfere with the operation of the train.

In addition, the power supply division section is a section for supplying power to the railway vehicle in the substation room, and is a section for dividing a section where power supplied from both the substation is overlapped with each other.

In addition, the above-mentioned Neutral Section and Dead Section are provided for the purpose of distinguishing the abnormal power supply from the electric railway by the electric railway. It is called bridge insulation section.

In the insulation section, an electrical separator for bridge and direct connection is provided at a contact point between the DC and AC trains, which is referred to as a bridge insulation section.

In addition, a section over phenomenon occurs when a train stops at a feed section, and the pantograph touches the feed line of both feed sections to electrically connect the air sen- sors. In the parallel feed sections of both substations, The two pantographs installed in a single vehicle are short-circuited by an electrical closed circuit in the railway vehicle, and arcing occurs due to breakdown of the electric railway vehicle or sudden change of electric current.

In order to solve such a problem, the applicant of the present invention has proposed a technique of protecting a line section section in Japanese Patent No. 743177. As shown in Fig. 1, a sensor for detecting entry of a train in a first section A sensor unit including a sensor unit and a sensor unit, the sensor unit including a sensor unit, a sensor unit including a sensor unit, A timer section; A trip occurrence confirmation unit for confirming whether or not a trip occurs by confirming a power supply state of the first segment segment and a second segment segment entering the segment segment as the train travels; A power supply for controlling the power breaker of the first section and the second section by using the state of the electric motor vehicle entering / exiting from the timer section coupled to the sensor section and the sensor section, And a control unit.

However, the above-mentioned electric wire line section protecting device has a disadvantage in that a separate interrupting device for protecting the section is required to be installed in the first and second sections.

Further, it is impossible to measure the driving range of the traction force of the electric motor vehicle, so that separate measures are required when the air section section is stopped.

SUMMARY OF THE INVENTION It is an object of the present invention to overcome the above-mentioned problems of the related art by providing a method of preventing short-circuiting of an air section or the like in a feeding / insulation section by pantograph, And to provide a railway vehicle section overhaul and a stopping protection system in a power supply / insulation section that enables safe operation of a railway vehicle irrespective of proficiency.

In order to attain the above object, the present invention is characterized in that the second and third active tags for confirming the positions of the rear and the front of the power feeding / insulation section are installed at the rear and front of the power feeding / A first active tag for detecting a start point of a third on-line driving operation for driving a driving force for driving a horsepower and providing a notification device to the engineer is installed, and the first active tag is provided for the first, second and third active tags, The RFID reader is connected to a control unit for controlling the driving range of the driving force, the detection of the start of the braking operation, the detection of the air section, and the announcement of the cabin. And provides a railway vehicle section overhaul and a stopping protection system in the power transmission / insulation section to prevent stopping in the section.

The present invention further includes a fourth active tag for transmitting the sensed signal while sensing the resistance of the power feeding / insulated section or the power feeding / insulated section, so as to feed the sensing signal to the RFID reader provided in the railway vehicle / Section of the insulation section over the railway vehicle and provides a stop protection system.

In addition, the control unit of the present invention receives the weight and the current speed of the railway car in real time from the TCMS when detecting the signal of the first active tag, calculates the driving range of the driving force, And provides a railway vehicle section override and a stopping protection system in a power feeding / insulation section for transmitting a signal to an onboard signaling device so as to control speed.

The third active tag connected to the control unit of the present invention provides a railway vehicle section overhaul and a stopping protection system of a power feeding / insulation section in which a control unit is provided to transmit a signal about the elevated position of the pantograph.

In addition, the first active tag of the present invention is provided for storing the passage time of the preceding vehicle and is provided for determining acceleration and deceleration when calculating the distance of the batting operation, System.

As described above, according to the present invention, it is possible to prevent short-circuiting of the power feeding / insulation section by the pantograph, to prevent the supply of current to the non-pushed portion, to precisely grasp the power feeding / There is an effect that safe operation of the railway vehicle can be performed irrespective of whether or not the railway vehicle is operated.

1 is a circuit diagram showing a conventional electric line section protection apparatus.
FIG. 2 is a circuit diagram showing a rail vehicle section over and a stop and stop system in a power supply / insulation section according to the present invention.
FIG. 3 is a circuit diagram showing the installation state of the power feeding section according to the present invention.
4 and 5 are circuit diagrams showing installation states of AC-AC and AC-DC insulation division sections according to the present invention, respectively.
FIG. 6 is a block diagram showing a railway vehicle section over and a stop and stop protection system in a power supply / insulation section according to the present invention.
FIG. 7 is a flowchart showing a railway vehicle section over and a stop and stop protection system in a power supply / insulation section according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a circuit diagram showing a railway vehicle section override and a stopping protection system in the power supply / insulation section according to the present invention, FIG. 3 is a circuit diagram showing the installation state of the power supply power section according to the present invention, FIG. 6 is a block diagram showing an AC-AC and AC-DC isolation section according to the present invention, and FIG. 6 is a block diagram illustrating a railway vehicle section over- And FIG. 7 is a flowchart showing a railway vehicle section over and a stopping protection system in a power supply / insulation section according to the present invention.

The second and third active tags 20 and 30 for confirming the positions of the rear and front of the power feeding / insulation section connected to the power feeding section are connected to the power feeding / It shall be installed at the rear and front of the insulation section.

At this time, the second active tag 20 is installed so that the pantograph 101 separates from the catenary and is moved to the lowered position for performing the hitting operation, that is, the starting point of the power supply / insulation section.

That is, the second active tag 20 causes the engineer to detect the starting point of the line top run for operation of the driver's wheel for driving force, the signal of the second active tag 20 is transmitted to the controller, (CSD) via the onboard signaling device (CSD).

At this time, the pit graph 101 is lowered by the manual operation by the engineer or the pantograph 101 is automatically lowered by the signal of the controller 100. In this case,

A plurality of first active tags 10 are provided at the front end of the second active tag 20, and the first active tag 10 calculates the speed between the tags, It is installed to calculate the distance of operation.

That is, the first active tag 10 is connected to the control unit to detect the rotation speed of the railway vehicle wheel 105 at the time of sensing the signal, and then measure the moving distance to calculate the distance of the driving force.

In addition, the first active tag 10 is installed to store the last time to be transmitted / received to / from an RFID reader installed in a preceding railway car, and when the signal of the second active tag is transmitted to the controller, And the acceleration and deceleration degrees are determined in calculating the distance of the hitting operation according to the speed.

The RFID reader 103 (or 103) is connected to a railway vehicle 100 that performs a driving operation in a feeding / insulation section (air section) section to receive signals corresponding to the first, second, and third active tags 10, 20, ).

At this time, the RFID reader 103 is connected to a control unit 90 installed to control the tapping operation distance, the start and end of the tapping operation, the air section detection, and the cab notice by the CSD.

In addition, a fourth active tag 40 is further connected to the resistance detection sensor 97 to output the measured resistance to the outside or to display the power feeding / insulation detection period.

The control unit 90 is connected to the RFID reader 103 and the pantograph 101 and the TCMS 93 and the onboard signaling device CSD 95.

The operation of the present invention constructed as described above will be described.

As shown in FIGS. 2 to 7, the second active tag 20 is disposed at a position before the entry of the feed / insulation section of the railway vehicle so as to confirm the positions of the rear and front of the feed / insulation section along the traveling direction of the railway car, The third active tag 30 is installed at a position where the power feeding / insulation section ends and the signals of the second and third active tags are sensed when the railway vehicle 100 travels, The RFID reader 103 can confirm the feed / insulation section.

At this time, the second and third active tags 20 and 30 are installed on a line R or a bundle line located at a close distance of the railway car 100, so that the transmission distance of the signal is minimized to facilitate mutual operation .

A plurality of first active tags (10) provided at a front end of the second active tag (20) are connected to the control unit while being separated from each other by a predetermined distance, and the control unit The travel distance and time according to the current speed of the railway vehicle wheel 105 moving between the active tags are measured to calculate the travel distance of the railway vehicle during the power driving operation in the power feeding /

That is, the first active tag 10 is installed in the railway car when sensing the signal by the RFID reader 103 connected to the control unit 90 of the railway car 100, (TCMS) 93, and calculates a target driving distance according to the weight and the current speed by means of a program pre-inputted to the control unit.

Then, after calculating the relative distance between the torque driving distance and the air section, the speed control amount is displayed on the on-vehicle signal device 95 so that the engine can control the steering wheel at a speed corresponding to the torque driving distance. When the RFID reader detects a signal in the case of automatic operation, the train total control device 95 is connected to the railroad car according to the current state and position of the railroad car, (Not shown) to automatically generate a control signal for controlling the position of the pantograph 101 while controlling the speed of the vehicle.

The control unit 100 senses the number of revolutions of the wheel of the railway car when sensing the signal of the third active tag, calculates a moving distance, and then moves a predetermined distance to supply a rising signal to the pantograph, Section over and stopping errors.

In addition, the first active tag 10 is provided to store the passing time of the preceding vehicle, and calculates the distance between the distance of the tapping operation and the preceding vehicle so as to determine the acceleration and deceleration according to the driving of the tapping operation section .

That is, the first active tag 10 determines the acceleration and deceleration of the current railroad vehicle passing through the power supply / insulation section so as to prevent a collision with the preceding vehicle when calculating the distance of the driving force.

The second active tag 20 is connected to the controller 90 of the railway car 100 when the incoming signal of the feed / insulation section is detected by the RFID reader 103, 101) is lowered to prevent energization of the power feeding / insulation section through the railway vehicle.

A resistance detection sensor 97 is installed on one side of the power supply / insulation section so that the power supply state or the like can be confirmed. The resistance detection sensor 97 is connected to the fourth active tag 40, It is possible to check the status of insulation section.

In addition, the controller 100 detects the weight and the current speed of the railway car when detecting the signal of the first active tag 10, calculates the driving range of the driving force, and controls the driving unit at the speed corresponding to the driving range The speed control amount is displayed on the vehicle signal device 95 or the control signal is transmitted so that the speed of the vehicle can be controlled automatically by the train total control device 93. In operation of the third active tag 30, And transmits a signal to the ascending position of the pantograph 101.

10 ... first active tag 90 ... control unit
93 ... train total control device 95 ... onboard signal device
100 ... Railroad car 101 ... Pantograph
103 ... RFID reader

Claims (7)

The second and third active tags for confirming the positions of the rearward and frontward portions of the feed / insulation section are installed at the rear and front of the feed / insulation section of the railway track,
A first active tag for detecting the start point of the on-line running operation for the operation of the driver's wheel for the driving of the driver,
An RFID reader is installed in a railway vehicle that performs a power operation on a power supply / insulation section so as to detect signals corresponding to the first, second, and third active tags,
A fourth active tag for transmitting the detected resistance while sensing the resistance of the power feeding / insulation section is further provided, and the fourth active tag is installed to transmit the measured resistance to the RFID provided in the railway vehicle,
The RFID reader is connected to a control unit installed to perform a driving operation of a railway vehicle, detection of a start of a braking operation and detection of an air section, a control of wakeup and descent of a pantograph, control of a cab operation, A section of the rail vehicle section over the power supply / insulation section, and a stop protection system. delete 2. The method of claim 1, wherein the controller detects the weight and the current speed of the railway car when sensing the signal of the first active tag,
Wherein the controller is provided to transmit a control signal to a deceleration / acceleration device connected to a train integrated control device so as to control a speed corresponding to a distance capable of driving the vehicle. 4. The on-vehicle signaling device as claimed in claim 3, wherein the controller calculates a relative distance between the driving range of the driving force and the air section in the manual operation, , The engineer elevates the pantograph by manual operation or performs the deceleration or acceleration operation,
In the case of automatic operation, when a signal is detected by the RFID reader, the integrated train control device is connected to the railroad car according to the current state and position of the railroad car, and a deceleration / Wherein the controller is provided to generate a control signal for controlling the position of the pantograph while controlling the power transmission / insulation section. [2] The apparatus of claim 1, wherein the third active tag is connected to the control unit, the third active tag is installed to transmit a signal for a rising position of the pantograph,
Wherein the control unit is installed to transmit the rising signal of the pantograph after measuring the moving distance after detecting the number of revolutions of the railway car wheel when detecting the signal of the third active tag, Over and stop protection system. 2. The power transmission / isolation section of claim 1, wherein the first active tag is installed to store the passage time of the preceding vehicle and is provided to determine a deceleration / acceleration amount when calculating the distance of the tapping operation. Vehicle section over and stop protection system. 2. The system of claim 1, wherein the second and third active tags are installed on a bundle located at a close distance of the railway vehicle.
KR1020160000792A 2016-01-05 2016-01-05 section over and stop-protection system for train in power supply and insulation section KR101743725B1 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110091768A (en) * 2018-01-31 2019-08-06 株洲中车时代电气股份有限公司 A kind of method for controlling passing neutral section, apparatus and system
KR20210130295A (en) * 2020-04-21 2021-11-01 한국철도기술연구원 Catenary defrosting apparatus for dc traction power supply system
KR20220147943A (en) 2021-04-28 2022-11-04 동산엔지니어링 주식회사 Catenary feeding division system
KR102466468B1 (en) * 2021-10-15 2022-11-11 한국철도공사 System for preventing train drive without permission for using both ac and dc

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100743177B1 (en) 2005-12-19 2007-07-27 서울메트로 Apparatus for section of electric automobile
JP2012066756A (en) * 2010-09-27 2012-04-05 Railway Technical Research Institute On-rail position detection method, brake control method, course control method, onboard device, and management device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100743177B1 (en) 2005-12-19 2007-07-27 서울메트로 Apparatus for section of electric automobile
JP2012066756A (en) * 2010-09-27 2012-04-05 Railway Technical Research Institute On-rail position detection method, brake control method, course control method, onboard device, and management device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110091768A (en) * 2018-01-31 2019-08-06 株洲中车时代电气股份有限公司 A kind of method for controlling passing neutral section, apparatus and system
KR20210130295A (en) * 2020-04-21 2021-11-01 한국철도기술연구원 Catenary defrosting apparatus for dc traction power supply system
KR102430717B1 (en) 2020-04-21 2022-08-11 한국철도기술연구원 Catenary defrosting apparatus for dc traction power supply system
KR20220147943A (en) 2021-04-28 2022-11-04 동산엔지니어링 주식회사 Catenary feeding division system
KR102466468B1 (en) * 2021-10-15 2022-11-11 한국철도공사 System for preventing train drive without permission for using both ac and dc

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