KR100743177B1 - Apparatus for section of electric automobile - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protection device of a section of a catenary for supplying electricity to an electric vehicle. Particularly, a circuit breaker of one of the breakers for supplying power to the catenary lines at both ends of the section in a DC section is tripped. In this case, when the current flows from the section where the breaker is input by the current collector of the electric vehicle to the tripped section, the section is prevented from being burned out by the arc discharge due to the repeated supply and interruption of the current by the current collector of the driven vehicle. It relates to a protection device composed of a sensor and a time limit device for.

Catenary, Section, Protective Device, Fire

Description

Apparatus for section of electric automobile}

1 is a conceptual diagram illustrating the concept of a catenary protection apparatus according to the present invention;

2 is a block diagram illustrating the operation of the catenary protection apparatus according to the present invention;

3 is a circuit operation diagram when the electric vehicle entering and separating section in the normal state to distinguish the first section and the second section of the operation of the catenary section protection device according to the present invention,

FIG. 4 is a circuit operation diagram in a case where the electric vehicle is not entered and the section is in a normal state for distinguishing the first section and the second section during the operation of the catenary section protection device according to the present invention; FIG.

5 is a circuit operation diagram in the case of the non-entrance of the electric vehicle in the section for distinguishing the first section and the second section during the operation of the catenary section protection device according to the present invention and tripping section;

FIG. 6 is a circuit operation diagram when the stationary state and the segmented section are in a steady state while being engaged with a sensor after the electric vehicle enters the section for distinguishing the first section and the second section during the operation of the catenary section protection device according to the present invention; FIG.

7 is a circuit operation diagram in the case of a tripping state of an electric vehicle entering and dividing a section that divides a first section and a second section among the operation of the catenary section protection device according to the present invention;

8 is a circuit operation diagram when the stationary state and the tripping state while engaging the sensor after entering the electric vehicle in the section separating the first section and the second section of the operation of the catenary section protection device according to the present invention,

FIG. 9 is a circuit diagram for explaining a tripping trip of a power circuit breaker in a first division section and a second division section; FIG.

10 is a flowchart illustrating a catenary protection method according to the present invention.

The present invention relates to a protection device of a section of a catenary for supplying electricity to an electric vehicle (SECTION, also known as a separator), and more particularly, one of the breakers for supplying power to the catenary lines at both ends of the section in a DC section is tripped. (TRIP) When the current flows from the section where the breaker is input to the tripped section by the current collector of the electric vehicle (PANTOGRAPH). The present invention relates to a protection device including a sensor, a time limiter, and the like for preventing the section from being burned out by arc discharge due to repeated supply and interruption of current by the current collector.

First, the main terms used in the related art and the technical field of the present invention will be defined and described below. New terms for explaining the concept of the present invention will be defined again in that section.

Section (Section) divides the power supply system of the tramline, limiting the power supply stop section when an accident occurs on a part of the tramline or when there is a need for power failure work for daily maintenance work. It is a facility for the purpose of securing. There are AIR section, FRP resin section, insulator section, etc., and the use of FRP resin section is especially high in DC section. In the description of the present invention, the section may indicate a separator, but since the section has a certain length, it is also used as a term indicating a section corresponding to that length.

And the current collector (PANTOGRAPH) is equipped with a current collector in contact with the wires on the frame foldable in a rhombic shape mounted on the roof, using a method of pushing up the wires in close contact with the force of the spring or compressed air.

In addition, the division section is a section distinguished by the section means a section receiving current from the substation each independently, and means a section set so as not to interfere with the operation of the electric vehicle.

SECTION OVER phenomenon is that the power is cut off by the current collector of the electric vehicle when the electric vehicle passes through the lower part of the section after the power is cut off by one of the circuit breakers operating due to the failure or other causes of the electric vehicle in the section. It is a section short-circuit phenomenon where the current is supplied to the section.

When the electric vehicle using the current collector passes the section section, if there is no change in the current, it is not a problem, but a failure occurs in the substation system that supplies power to the section section, or the adjacent work section section trips for daily maintenance. If the current collector attached to the electric vehicle passes through the section, an arc occurs due to a sudden change in current.

When arc discharge occurs in this way, the section is damaged, and there is a fear of fire. This problem has actually occurred in Korea. Citing the actual article on July 11, 2004, "As a result of a power outage at Daelim Station on the Seoul Subway Line 2, on July 8, 2004, trains on all subway lines were suspended for about 70 minutes. On August 8, at 6:30 pm, the train power supply at Daelim Station of Subway Line 2 had a problem, leaving Train No. 2380, which had entered Daelim Station's platform, stopped. The 1,500-volt high-voltage cable installed in the house was suddenly blown off with a "pop" explosion. "

"By July 10, 2004 at 6:10 pm, the fire at the Gangbyeon station substation at Seoul Subway Line 2 was completely interrupted for 35 minutes in the direction of the shrine between Seongsu Station and Samsung Station. Other sections of Line 2 were delayed due to the fire. It has been extended from 3 to 5 minutes to 15 minutes, and Subway Line 2 was stopped on April 25 and July 8 near Guui Station and Daelim Station, respectively. "There have been three train interruptions during the month, leaving passengers nervous."

In particular, the section of the section where the tracks overlap in the vehicle base where the electric vehicle is located has a problem that it takes a lot of cost and time for the maintenance work due to frequent failures.

However, apart from problems such as cost and time of simply repairing and replacing sections, as mentioned in the above-mentioned article, there are problems of passenger safety and threat of passenger life.

To solve this problem, the prior art for the section relies only on the physical properties of the separator itself without a separate protective circuit or control device.

The present invention is to solve the above problems, by installing a sensor in a predetermined position that can detect the entry of the electric vehicle, to have a time setting using the on-off timer, any one of the adjacent division section In the event that a vehicle enters or enters a tripped section, the other circuit breaker that is not tripped also automatically trips to provide a catenary section protection device to prevent the section from being burned out by the current collector of the vehicle. .

An apparatus for protecting a catenary section according to the present invention for achieving the above object comprises a sensor unit including a sensor for detecting the entry of the electric vehicle in the first section;

A timer unit operating in association with the sensor unit so as to give a time limit to the operation of the sensor unit in consideration of the sensor passing time of the electric vehicle so that the operation of the sensor unit can be maintained until the electric vehicle completely passes the sensor;

A trip occurrence checking unit for checking whether a trip occurs by checking a power supply state of a second section to be entered as the first section and the electric vehicle proceed;

Power supply for controlling the power breaker of the first section and the second section using the state of entering the vehicle from the sensor unit and the timer unit interlocked with the sensor unit and the trip occurrence state from the trip occurrence confirming unit. And a catenary section protection device comprising a control unit.

In addition, the method using the catenary section protection device having the configuration as described above gives a time limit to the operation of the sensor unit in consideration of the sensor passing time of the first deceleration vehicle so that the operation of the sensor unit until the electric vehicle completely passes the sensor. A second step of generating a vehicle entry state signal by using a timer unit operating in conjunction with the sensor unit so as to be maintained; And

Trip generation confirmation unit for checking the power supply state of the second division section to enter as the first division section and the electric vehicle proceeds to determine whether there is a trip and the electric vehicle from the timer unit interlocked with the sensor unit and the sensor unit And a third process of controlling the power circuit breaker by using a power supply control unit which controls a power circuit breaker between the first section and the second section using the entry status and the trip occurrence status from the trip occurrence confirming section. It is characterized by.

In addition, the method may be recorded in a recording medium on which a computer-readable program is recorded.

 When described in detail with reference to the accompanying drawings as follows.

1 is a conceptual diagram illustrating a concept of using a catenary protection device according to the present invention, Figure 2 is a block diagram of a catenary protection device according to the present invention.

First, the terms used to describe the present invention will be defined with reference to FIG. 1.

The division section is a section which is distinguished by the section, and refers to a section receiving current from a substation independently of each other, and means a section that is set up so as not to interfere with the operation in consideration of the electric vehicle. For convenience of description of the present invention, it is divided into a first division section 100 and a second division section 102. The first division section 100 is supplied with power independently from a substation, and both ends thereof are divided by a section, The electric vehicle enters a section of a tank line that supplies electricity to the current collector, and the second division section 102 refers to a section that enters as the electric vehicle proceeds. It can be seen that it is repeated continuously along the tram line.

The concept of the present invention is as follows.

As shown in FIG. 1, the first division section 100 and the second division section 102 are each independently supplied with power from the first substation and the second substation side.

First, a case in which the catenary protection device does not need to be operated will be described. (1) The electric vehicle enters the first segment section 100 in a state where a trip state does not occur in any of the segment sections (hereinafter, referred to as a 'normal state'). In one case or (2) when the segment is in a normal state and the electric vehicle does not enter the segment, (3) a trip is performed in any one of the first segment 100 and the second segment 102. If the electric vehicle has not yet entered the first division section 100 even if a condition occurs, the section may not be damaged due to a section over phenomenon, so that the catenary protection device 200 is not operated so that the first division section from the substation is not operated. The power supply to the 100 and the second division section 200 is not cut off.

And as a special case (4) when the electric vehicle enters the first division section 100 and then engages with the sensor (this is the case when the sensor is installed to detect the wheel will be the case that the wheel is engaged with the sensor) The catenary protection device 200 does not operate. This portion will be described in more detail below in the description of FIG. 6.

However, referring to the case where the catenary protection device needs to operate differently from the above case, (5) when the electric vehicle enters into the first section, the trip is tripped to the first section 100 or the second section 102. When the state occurs (this is a concept that includes both when the electric vehicle enters first and the breaker operates or the electric vehicle enters after the breaker operates), the moment the electric vehicle proceeds to the second section 102 Since arc discharge may occur in the section, the vehicle line protection device 200 is operated to cut off power supply from the substation to the first section 100 and the second section 102.

When the trip state occurs, the first section 100 and the second section 102 are cut off at the same time by the catenary protection device 200, and then the power supply is required again. In case of safety, supply circuit breaker by manual input. Therefore, it will be apparent that the automatic injection after a certain time is included in the scope of the present invention.

As a special case, when the electric vehicle enters the first division section 100 in the trip state and is engaged with the sensor, the breaker continues to be blocked due to the operation of the protection device 200 and thus the breaker cannot be inserted. It needs to be supplemented. That is, after a certain time, the operation of the protection device 200 is released so that the breaker can be input.

Figure 2 is a block diagram of the catenary protection device 200, looking at each part,

Only one sensor of the sensor unit 201 may be used. Preferably, at least two sensors are installed so that another sensor may operate even when one of them is broken. In addition, the position where the sensor is fixed is installed in the sleeper provided in the rail of the lower end corresponding to the section, is installed close to the wheel of the electric vehicle to prevent the foreign matter caught as much as possible.

In addition, it is preferable that the sensor uses a photoelectric proximity switch method or an ultrasonic type proximity switch method, and its characteristic is that the photoelectric sensor has an operating range of about 300 to 700 mm.

The timer unit 203 may give a time limit to the operation of the sensor unit 201 in consideration of the sensor passing time of the electric vehicle so that the operation of the sensor unit 201 may be maintained until the electric vehicle completely passes the sensor. It operates in conjunction with the sensor unit 201 so that.

The timer unit 203 may be further divided into a first timer (OFF timer) 203-1 and a second timer (ON timer) 203-2.

The first timer 203-1 is an OFF timer that is turned on after the input voltage is applied by the sensor and is turned off after the power is turned off, and the second timer 203-2 is turned off in the off state. The ON timer performs ON after the input voltage is applied by the first timer 203-1.

If the power is turned off again within the set time, it has the set time again from the moment of interruption.

The reason why the first timer 203 is used is that the sensor 201 of the sensor unit 100 has no time limit, so when the electric vehicle enters and detects the entry, the sensor is operated in the empty space between the wheel and the wheel of the electric vehicle. This is to set the time limit to maintain the forced entry state because it can not generate a signal by continuously detecting that the electric vehicle has entered because it does not operate.

Here, the time setting of the first timer 203-1 preferably has a time setting of 2 seconds to 5 seconds, which is a sensor without a time limit, and a disconnection phenomenon occurs between the wheel and the electric vehicle. Cannot detect that the car has entered and continues to pass, so that a single wheel of an electric vehicle is normally four from one side, and the distance between the first wheel and the second wheel and the distance between the second wheel and the third wheel, and Given the speed of the vehicle, it is required to continuously detect that the electric vehicle has entered until the last 10 wheels have passed all the sensors.

Here, the object of the present invention can be achieved by only blocking the breaker, but it is necessary to insert the breaker when the operation of the electric vehicle needs to be resumed when the trip state is temporarily released or for other reasons. have.

At this time, the second timer 203-2 needs to be used. If the electric vehicle (or the wheel of the electric vehicle) stops in the range where the sensor is operated, the electric vehicle section section protection device 200 is operated so that power cannot be supplied (if the breaker is manually inserted, it is blocked again by the operation of the protection device). The second timer 203-2 is used to release the operation of the catenary section protection device 200 after the setting is made to prevent this.

Preferably, the second timer 203-2 is set to 6 seconds to 60 seconds, which is to have a larger time limit because the setting time of the first timer 203-1 is 2 seconds to 5 seconds. to be.

The trip generation check unit 205 checks the power supply state of the second division section to be entered as the first division section and the electric vehicle progresses, and checks whether there is a trip occurrence.

In detail, the trip occurrence confirming unit has a first switching means and a second switching means which are operated correspondingly according to the trip whether signal from the first and second divisions, respectively, the first switching means and the first switching means. 2 The switching means are all turned off in the normal state, the corresponding switching means is turned on when a tripped section occurs, and if any one of the sectioned sections is tripped, the power supply control unit is operated to operate the first section and the first section. Turn off all of the circuit breakers in the two-division section.

That is, the power supply is checked in the first division section and the second division section, and a reverse signal is given. In the normal state, all of the switching means are turned off, and either one of the first section and the second section section is tripped. In this case, the switching means connected to the tripped division section is turned on so as to generate a signal from the power supply control unit by the AND of the electric vehicle ingress signal.

The power supply control unit 207 utilizes whether the electric vehicle enters from the sensor unit 201 and the timer unit 203 linked with the sensor unit 201 and the trip occurrence state from the trip occurrence check unit 205. By controlling the power circuit breaker of the first and second divisions.

As described above, the breaker input control unit 209 supplies a control signal to the power supply control unit 207 according to the operation of the second timer so as to input the power breaker.

In addition, the catenary protection system 200 may further include a microcomputer function to transmit a signal generated from the catenary protection apparatus to a remote monitoring controller through a data collector and use it as a database.

That is, the data of each section is collected from time to time by using signals generated by the sensor unit 201, the timer unit 203, the trip occurrence check unit 205, the power supply control unit 207, and the breaker input control unit 209. It transmits the data to the remote monitoring control unit, classifies the acquired data by time, date, etc., and checks whether each part is broken.

And by using the electric vehicle entry status checking lamp which is operated by the first timer and indicates that the electric vehicle has entered the lower end of the section and / or the protection device operation signal generating lamp which is operated by the power supply and indicating that the electric vehicle line section protection device is operating. It is possible to visually check the electric vehicle entry status and also to check the operation status of the protective device.

In addition, it will be configurable to provide a signal to the remote monitoring control unit to be monitored remotely.

The catenary section protection device having the above configuration is operated as follows.

3 is a circuit operation diagram when the electric vehicle in the first division section and the steady state of the division section during the operation of the catenary section protection apparatus according to the present invention.

3 illustrates a case in which the electric vehicle enters the first division section 100 in the normal state. First, only the results show that the operation signal is not generated by the first circuit breaker and the second circuit breaker. I will not.

In detail, when the sensors 201-1 and 201-2 detect that the electric vehicle enters, the contacts S1-1 and S2-1 conduct. The reason for having at least two sensors is that, as described above, the circuit is a logic sum circuit which requires only one of the contacts to conduct, so that it operates even when any one of the sensors fails.

Next, when power is supplied to the first timer 203-2 by the operation of the sensor, the contacts T1-1 and T1-2 become conductive. When the second timer 203-2 is provided, the contact T1-1 again supplies power to the second timer 203-2, and simultaneously supplies power to the trip generation check unit 205. At this time, power is applied to a lamp GL connected in parallel to both ends of the second timer 203-2, so that it can be visually identified. The contact T1-2 is connected to the trip occurrence confirmation unit 205, which controls the operation of the power supply control unit 207 by using a logical product of the electric vehicle entry state and the trip occurrence state.

The trip occurrence confirmation unit 205 confirms whether power is supplied from the substation to the division section. When the power is being supplied, the switch means Tr1 and Tr2 are turned off.

Therefore, since the trip occurrence checking unit 205 is turned off, the power circuit breaker does not operate because power is not supplied to the power supply control unit 207 even when the electric vehicle enters. In addition, since one end is connected between the contact R1-1 and T2-1 and the other end is connected to N, the lamp (RL: protection device operation signal generation lamp) does not operate unless power is supplied by R1-1. 200 can be checked whether or not the operation.

At this time, the second timer 203-2 turns on the T2-1 point after 10 seconds to 60 seconds after the power is supplied by the contact T1-1 of the first timer 203-1. Since the circuit breaker trip control unit 209 does not operate because the contact point R2-1 between the 207 and the trip occurrence confirming unit 205 is turned off because the contact point R1-1 of the power supply control unit 207 does not operate, the second timer ( 203-2), the protection device does not act on the breaker side.

FIG. 4 is a circuit operation diagram when the electric vehicle is not entered and the division section is in a normal state during the operation of the catenary section protection device according to the present invention, and FIG. 5 is the first of the operation of the catenary section protection device according to the present invention. This is a circuit operation diagram when the train is not entered and the trip is broken.

4 shows a case in which the division section is in a normal state and the electric vehicle has not entered the division section. First, only the results show that the first and second breakers do not generate an operation signal, and thus the catenary protection system 200 does not operate. will be.

Operation of other parts of the circuit diagram will be described with reference to FIG. 3 described above, and only the main parts will be described herein.

Since the sensors 201-1 and 201-2 do not operate, no operation occurs in the first timer 203-1 and the second timer 203-2, and thus the electric vehicle is sent to the trip occurrence confirmation unit 205. Since the contact point T1-2 for supplying the entry signal is in an off state, even if a trip occurs in the breaker provided in the division section, the protection device 200 does not operate since the control signal is not generated by the power supply control unit 207 in a logical product. .

5 is a case where the division section is in a trip state and the electric vehicle is not entered in the first division section, so the protection device 200 does not operate as in FIG. 4.

FIG. 6 is a circuit operation diagram when the stationary state and the segmented section are in a normal state while being engaged with the sensor after the electric vehicle enters the first section during the operation of the catenary section protection device according to the present invention.

In FIG. 6, since both the switching means Tr1 and Tr2 of the trip occurrence confirming unit 205 are off, the protection device 200 does not operate. Here, the second timer 203-2 is operated after the set time limit is set in the stop state while being engaged with the sensor after the electric vehicle enters the first division section. In this case, since the contact point of R1-1 is off, the breaker closing control unit 209 ) Does not operate, so the contact R2-1 remains in the conduction state, but since the control signal is not supplied from the trip occurrence check unit 205 to the power supply control unit 207, the breaker input signal is not supplied to the breaker side.

FIG. 7 is a circuit operation diagram when an electric vehicle enters into a first division section and a tripping section during a operation of the catenary section protection device according to the present invention.

Figure 7 shows the operation that the present invention is intended. That is, when a trip occurs in the division section, the switching means Tr-2 connected to the second division section of the switching means of the trip generation check unit 205 is turned on, and this results in a logical sum in relation to Tr-1. The power of the circuit breaker is operated by supplying a control signal to the power supply control unit 207 by a logical product. In this case, only the case where the second section is tripped is shown, but the same operation will be performed when the first section is tripped. When the power circuit breaker is operated, the first and second division sections are blocked at the same time, thereby reliably blocking the tripping of the tripped section.

8 is a circuit operation diagram when the stationary state and the tripping state of the division section while being engaged with the sensor after the electric vehicle enters the first section during the operation of the catenary section protection device according to the present invention.

As illustrated in FIG. 8 to FIG. 7, when the electric vehicle enters and the section is tripped, the contact R1-1 is turned on by the operation of the power supply control unit 207.

At this time, the second timer 203-2 is operated after the set time limit in the stop state while being engaged with the sensor after the electric vehicle enters the first division section. In this case, since the contact point of R1-1 is on, the breaker closing control unit 209 ) Is operated and the contact point R2-1 is turned off so that the control signal is not supplied from the trip occurrence check unit 205 to the power supply control unit 207, so that the protection device 200 is not in operation. Done.

9 is a circuit diagram for explaining the operation of the power circuit breaker of the first and second divisions.

Receiving a signal from the power supply control unit 207 to control the breaker, the contact R1-2 and

R1-3 performs the same operation as the contact R1-1 of the power supply control unit. That is, in order to operate the power circuit breaker by receiving a signal from the power supply control unit 207, the on or off operation is alternately performed.

10 is a flowchart illustrating a catenary protection method according to the present invention.

Detailed operations will be described with reference to FIGS. 3 to 8 and will not be described repeatedly.

As shown in FIG. 10, power is independently supplied from a substation, and both ends thereof are divided by sections, and for detecting the entry of an electric vehicle within a first section, which is a section in which an electric vehicle enters among electric vehicle lines that supply electricity to a current collector of an electric vehicle. Using the sensor unit including a sensor to detect whether the vehicle enters (S301).

Next, the timer unit is operated in conjunction with the sensor unit so that the operation of the sensor unit is maintained in consideration of the sensor passing time of the electric vehicle so that the operation of the sensor unit can be maintained until the electric vehicle completely passes the sensor. Generate a vehicle entry state signal by using (S303)

Next, from the trip occurrence confirming unit to check the power supply state of the second division into which as the first section and the electric vehicle proceeds to determine whether there is a trip, and the timer unit which is interlocked with the sensor unit and the sensor unit. The power circuit breaker is controlled by using a power supply control unit which controls the power circuit breakers of the first and second division sections using the electric vehicle entry state and the trip occurrence state from the trip occurrence confirmation unit (S305).

In addition, the method for protecting the catenary section may use the breaker input control unit for inserting the power circuit breaker according to the operation of the second timer to enable the power circuit breaker to be inserted even when the wheel of the electric vehicle is stopped by being engaged with the sensor (S307). ).

In accordance with the above-described configuration, the present invention can reduce the cost and time loss of replacing a section by burning it by preventing the section from being electrically damaged in the replacement-oriented method when the section is burned out due to the section over phenomenon. It can be effective.

In addition, it is possible to prevent the safety of the passengers due to fire can bring the effect of guaranteeing a safer electric vehicle operation.

Claims (14)

A sensor unit including a sensor for detecting an entry of an electric vehicle in a first division section; A timer unit operating in association with the sensor unit so as to give a time limit to the operation of the sensor unit in consideration of the sensor passing time of the electric vehicle so that the operation of the sensor unit can be maintained until the electric vehicle completely passes the sensor; A trip occurrence checking unit for checking whether a trip occurs by checking a power supply state of a second section to be entered as the first section and the electric vehicle proceed; Power supply for controlling the power breaker of the first section and the second section using the state of entering the vehicle from the sensor unit and the timer unit interlocked with the sensor unit and the trip occurrence state from the trip occurrence confirming unit. Catenary section protection device comprising a control unit. The apparatus of claim 1, wherein at least two sensors are installed on the sleepers provided in the rails of the lower end corresponding to the sections, and the sensors are installed in close proximity to the wheels of the electric vehicle. The apparatus of claim 2, wherein the sensor is a photoelectric proximity switch type or an ultrasonic type proximity switch type. According to claim 1, wherein the timer unit is composed of a first timer and a second timer, each of the first timer is an off-timer that is turned on when the power is supplied, and off after 2 to 5 seconds, the second timer is Catenary section protection device, characterized in that the on-timer that is on after 6 seconds to 60 seconds after the power supply. The apparatus of claim 4, further comprising a circuit breaker input control unit configured to input a power circuit breaker according to the operation of the second timer. The protective device according to claim 4 or 5, which is operated by a first timer and operated by an electric vehicle entry condition checking lamp indicating that the electric vehicle has entered the lower end of the section, and a power supply and indicating that the electric vehicle line section protection device is operating. Catenary section protection device further comprises an operation signal generating lamp. 2. The apparatus as claimed in claim 1, wherein the trip occurrence confirming unit has a first switching means and a second switching means respectively correspondingly operated according to the tripping signal from the first and second division sections. The second switching means are all turned off in the normal state, the corresponding switching means is turned on when the tripped division section occurs, and when the one division section is in the trip state, the power supply control unit is operated to operate the first division section and The catenary section protection device characterized in that it is possible to turn off all the circuit breakers of a 2nd division section.  A first step of detecting whether the vehicle has entered by using a sensor unit including a sensor for detecting an entry of the electric vehicle in the first section;  By using the timer unit operating in conjunction with the sensor unit so that the operation of the sensor unit is maintained in consideration of the sensor passing time of the electric vehicle to maintain the operation of the sensor unit until the electric vehicle completely passes through the sensor. A second step of generating an entry state signal; And Trip generation confirmation unit for checking the power supply state of the second division section to enter as the first division section and the electric vehicle proceeds to determine whether there is a trip and the electric vehicle from the timer unit interlocked with the sensor unit and the sensor unit And a third process of controlling the power circuit breaker by using a power supply control unit which controls a power circuit breaker between the first section and the second section using the entry status and the trip occurrence status from the trip occurrence confirming section. How to Protect the Catenary Section. The method of claim 8, wherein at least two sensors of the first process are installed so that one can be operated by the other in case of failure, and installed in the sleeper provided in the rail of the lower end corresponding to the section. And installing close to the wheels of the electric vehicle to prevent the sensor from malfunctioning by foreign matter. 10. The apparatus of claim 8, wherein the timer unit of the second process comprises a first timer and a second timer, and each of the first timers is an off-timer that is turned on when the power is supplied and operates off after 2 to 5 seconds. , The second timer is an on-timer that operates on after 10 seconds to 60 seconds after power supply. The power circuit breaker of claim 10, wherein the power circuit breaker can be inserted even when the wheels of the electric vehicle are stopped by being engaged with the sensor by using a circuit breaker input control unit for inputting a power circuit breaker according to the operation of the second timer of the second process. A method for protecting a catenary section, further comprising a fourth process. 12. The method of claim 11, wherein the second process and the fourth process respectively indicate an entry state by using an electric vehicle entry state confirmation lamp indicating that the entry is operated by the first timer, and the protection device operation signal operated by the power supply unit. The method of claim 1, further comprising: indicating that the catenary section protecting device is operating by using the generated lamp. 9. The apparatus of claim 8, wherein the trip occurrence confirming unit of the third process has a first switching means and a second switching means, respectively, correspondingly operated according to a tripping signal from the first and second divisions. Both the first switching means and the second switching means are turned off in the normal state, and the corresponding switching means is turned on when a tripped section occurs, and the power supply control unit is operated by operating the power supply control unit when one of the sectioned sections is tripped. A method for protecting a catenary section according to claim 1, wherein both power breakers of the first section and the second section can be turned off. delete

Images