KR100651191B1 - A system of battery-charging diagnos in electrical railway - Google Patents

Abstract

The present invention relates to a battery charger diagnostic system for an electric railway vehicle, and more particularly, a relay contact signal detection unit for detecting contact signal voltages of various relays; A DC / DC converter for converting the propulsion and braking output of the DC voltage, the VCB state, and the four-sector entry / pass signal voltage into another DC voltage; A catenary line voltage detector for detecting a voltage from the catenary line; A catenary current detecting unit for detecting a current flowing in the catenary; A power analyzer for analyzing power consumption, power factor, effective value, and harmonic content; A first A / D converter converting analog power information into a digital signal; A speed sensor for generating a pulse signal corresponding to the rotational speed of the wheel while the railway vehicle is running; A frequency / voltage converter converting a frequency into a voltage; A second A / D converter for converting an analog speed voltage into a digital signal; A vehicle speed detection unit detecting a current traveling speed of the vehicle; A counter for counting pulses detected by the speed sensor; A location information detector for calculating a travel distance of the railway vehicle compared to the number of pulses; A battery charger voltage detector; A battery charger current detector; A signal converter for converting a charging voltage and a current of the battery into a DC voltage that can be recognized by a computer; It stores and outputs the output signal of each part in real time, and stores and outputs the fault condition information of the corresponding battery charger together with the speed and position, the wire voltage state, and the status information of various relays at the time when a fault occurs in a specific battery charger. It is made up of a computer.

Therefore, it is possible to simultaneously identify and analyze the information on the line condition and the four sections, the power supply status, the speed and the position information along with the current and voltage signals of the battery charger while the electric railway vehicle is running. The analysis can be done more accurately.

Battery Chargers, Power Analysis, Speed, Position, Propulsion and Braking, VCB Status, Quadrant

Description

Battery charger diagnostic system for electric vehicle {A system of battery-charging diagnos in electrical railway}             

1 is a block diagram of a system of the present invention;

Explanation of symbols on the main parts of the drawings

1: relay contact signal detection unit 2: DC / DC converter

3: tram line voltage detector 4 tram line current detector

5: power analyzer 6,9: first and second A / D conversion unit

7: speed sensor 8: frequency / voltage converter

10: vehicle speed detection unit 11: counter

12: location information detector 13: battery charger voltage detector

14 battery charger current detection unit 15 battery

16: signal converter 17: computer

18: monitor 19: wired communication interface

20: wireless communication interface 21: railway operation management system

101: propulsion signal detector 102: braking signal detector

103: VCB state detection unit 104: four sections entry / pass signal detection unit

The present invention relates to a battery charger diagnostic system of an electric railway vehicle, and more particularly, information about a line condition and a four-section, power supply state and speed and position information together with current and voltage signals of a battery charger while the electric railway vehicle is running. At the same time, it was invented so that the performance evaluation and breakdown analysis of the battery charger can be made more accurately by enabling the identification and analysis.

In general, one of the important factors for the timing and safety of the electric railway vehicle is to secure the reliability of the electrical equipment mounted on the vehicle.

One of these parts, the battery charger, is an important device that supplies control power to each electronic device and operates various relays. It is necessary to check the performance and function thereof.

However, in the related art, the battery chargers were individually performed only when performing tests such as a single part test or a complete car test. The speed and position, and the state of the breaker switch (VCB) installed between the pantograph and the transformer were performed. Accurate diagnosis of the battery charger was difficult because it did not compare with such signals.

The present invention has been made to solve the above-mentioned conventional problems, the state information (voltage, current) for the battery chargers installed in each vehicle in the running electric railway vehicle, the driving speed, driving position information of the vehicle It can be supplied with key vehicle signals such as wire voltage and VCB status to analyze and store various signals at the same time to establish the optimal driving schedule, and to act more quickly and accurately when a specific battery charger fails. The object of the present invention is to provide a battery charger diagnosis system for an electric railway vehicle.

The above object of the present invention is a relay contact signal detection unit for detecting the contact signal of the various relays installed in the electric railway vehicle with a voltage; A DC / DC converter for converting propulsion and braking output from the relay contact signal detector into a DC voltage, a VCB state, and a four-zone entry / pass signal voltage into a DC voltage that can be recognized by a computer; A catenary line voltage detector for detecting a voltage supplied to a railroad car from a catenary line; A catenary current detecting unit for detecting a current flowing in the railroad car from a catenary line; A power analyzer which receives the output signal of the catenary voltage and current detector and analyzes the amount of power used, power factor, effective value, and harmonic content; A first A / D converter converting analog information output from the power analyzer into a digital signal; A speed sensor installed at the wheel of the railway vehicle and generating a pulse signal corresponding to the rotational speed of the wheel while the railway vehicle is traveling; A frequency / voltage converter converting the frequency of the intermittent pulse detected by the speed sensor into a voltage; A second A / D converter converting the analog railroad vehicle speed voltage output from the frequency / voltage converter into a digital signal; A vehicle speed detector configured to receive an output signal of the A / D converter and detect a current traveling speed of a railway vehicle; A counter for counting intermittent pulses detected by the speed sensor; A position information detection unit which receives the output signal of the counter and calculates the traveling distance of the railway vehicle compared to the number of pulses and detects the position thereof; A battery charger voltage detector detecting an output voltage of the battery charger; A battery charger current detector for detecting a current flowing in the battery charger; A signal converter for converting a charging voltage and a current of the battery detected by the battery charger voltage / current detector into a DC voltage that can be recognized by a computer; It stores and outputs the output signal of each part in real time, and stores and outputs the fault condition information of the corresponding battery charger together with the speed and position, the wire voltage state, and the status information of various relays at the time when a fault occurs in a specific battery charger. The computer can be achieved by displaying various information directly on a monitor or outputting the information to a remote railway operation management system through a wired or wireless communication interface.

At this time, the relay contact signal detection unit and a propulsion signal detection unit for detecting whether the mascon operated by the engineer operating on the pushing side; A braking signal detector for detecting whether the mascon operated by the engineer is operated to the braking side; A VCB state detector for detecting a state signal of a breaker switch provided between the pantograph and the transformer; It is achieved by constructing a four-zone entry / pass signal detection unit for detecting an entry / pass signal between four substations, which are non-powered sections between a substation and a substation.

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

1 shows a block diagram of a system of the present invention.

According to the present invention, there is provided a system comprising: a relay contact signal detector (1) for detecting, as a voltage, contact signals of various relays installed in an electric railway vehicle;

DC / DC converter for converting the propulsion and braking output from the relay contact signal detection unit 1 as a DC voltage, the VCB state and the four-section entry / pass signal voltage into a DC voltage that can be recognized by the computer 17 ( 2) and;

An electric vehicle line voltage detector (3) for detecting a voltage supplied to the electric railway vehicle from the electric vehicle lines;

A tramline current detector 4 for detecting a current flowing in the electric railway vehicle from the tramline;

A power analyzer (5) which receives the output signal of the catenary voltage / current detector (3) (4) and analyzes the amount of power used, power factor, effective value, and harmonic content;

A first A / D converter 6 for converting analog information output from the power analyzer 5 into a digital signal;

A speed sensor 7 installed at the wheel of the railroad car and generating a pulse signal corresponding to the rotational speed of the wheel while the railroad car is running;

A frequency / voltage converter 8 for converting a frequency of the intermittent pulse detected by the speed sensor 7 into a voltage;

A second A / D converter (9) for converting an analog railway vehicle speed voltage output from the frequency / voltage converter (8) into a digital signal;

A vehicle speed detector (10) which receives the output signal of the second A / D converter (9) and detects the current traveling speed of the railway vehicle;

A counter (11) for counting intermittent pulses detected by the speed sensor (7);

A position information detector (12) which receives the output signal of the counter (11) and calculates the traveling distance of the railway vehicle compared to the number of pulses to detect the position of the vehicle;

A battery charger voltage detector 13 detecting an output voltage of the battery charger;

A battery charger current detector 14 detecting a current flowing in the battery charger;

A signal converter 16 for converting the charging voltage and the current of the battery 15 detected by the battery charger voltage / current detectors 13 and 14 into a DC voltage that can be recognized by the computer 17;

It stores and outputs the output signal of each part in real time, and stores and outputs the fault condition information of the corresponding battery charger together with the speed and position, the wire voltage state, and the status information of various relays at the time when a fault occurs in a specific battery charger. What constitutes the computer 17 is a basic feature.

In addition, the computer 17 displays various judgment information, location information, speed information, mascon and VCB status information, four-stage entry passage information and wire voltage status information on the battery chargers directly on the monitor 18, or wired or wireless. It is an additional feature that the output via the communication interface 19, 20 to the remote railway management system 21.

At this time, the relay contact signal detection unit 1 includes a propulsion signal detection unit 101 which detects whether or not the mascon operated by the engineer is driven to the pushing side;

A braking signal detector 102 for detecting whether the mascon operated by the engineer is operated to the braking side;

A VCB state detector 103 for detecting a state signal of a breaker switch provided between the pantograph and the transformer;

It is characterized by consisting of a four-section entry / passing signal detection unit 104 for detecting the entry / passing signal between the substation, which is the non-powered section between the substation and the substation.

Referring to the operation and effect of the system of the present invention configured as described above are as follows.

First, the relay contact signal detector 1 installed in the control diagnostic apparatus for an electric railway vehicle in the system of the present invention includes the propulsion signal detector 101, the brake signal detector 102, the VCB state detector 103, and the four-lane entry / exit. The pass signal detector 104 has a form configured to detect contact signals of various relays as voltages.

That is, the propulsion signal detection unit 101 in the relay contact signal detection unit 1 detects with a voltage whether the mascon operated by the engineer is operated to the propulsion side, and the braking signal detection unit 102 operates with the mascot. It detects whether the brake is operated by the voltage, the VCB state detection unit 103 detects the state signal of the breaker switch installed between the pantograph and the transformer as voltage, and the four-section entry / pass signal detection unit 104 performs the substation and substation. The entry / passage signal of the four-way section, which is the non-powered section, is detected as a voltage.

At this time, the relay contact signal detection unit 1 receives a DC 72V voltage from the relay in the control diagnostic apparatus and outputs a DC voltage corresponding to the propulsion, braking, VCB state, and four-way entry / pass signal.

Since the DC voltage cannot be recognized by the computer 17, propulsion and braking outputted by the DC voltage from the relay contact signal detection unit 1 through the DC / DC converter 2, the VCB state, and the entry / pass of the cross section. The signal voltage is converted into a DC voltage that can be recognized by the computer 17 (that is, 5V).

In addition, as described above, when the computer 17 receives the propulsion and braking, the VCB state, and the four-way entry / pass signal during the driving of the electric railway vehicle, the speed sensor 7 installed on the wheel of the railway vehicle is used for the railway vehicle. The pulse signal corresponding to the rotational speed of the wheel while driving is continuously generated and outputted to the frequency / voltage converter 8 and the counter 11.

Accordingly, the frequency / voltage converter 8 converts the frequency of the intermittent pulse detected by the speed sensor 7 into an analog voltage and outputs the analog voltage to the second A / D converter 9. In the 2 A / D converter 9, the analog railroad car speed voltage output from the frequency / voltage converter 8 is converted into a digital signal.

Therefore, the vehicle speed detector 10 receives the output signal of the second A / D converter 9 and detects the current traveling speed of the railway vehicle and transmits it to the computer 17.

On the other hand, since the counter 11 counts the intermittent pulses detected through the speed sensor 7 and sends them to the position information detector 12, the position information detector 12 inputs the output signal of the counter 11. The distance of the railway vehicle compared to the number of pulses is calculated to detect the position of the vehicle.

At this time, the calculation method for determining the position of the railway vehicle in the position information detection unit 12 is based on the number of pulses generated when the wheel of the railway vehicle is rotated one turn and the circumferential length data of the wheel in the counter 11 When the number of pulses input is multiplied by the circumferential length of the wheel, the starting point of the railway vehicle is calculated as "0", and it is continuously calculated as to how many Km points the railway vehicle is currently traveling. It is recognized and sent to the computer 17.

In addition, as described above, when the speed and position information of the electric vehicle while traveling are continuously detected and input to the computer 17, the battery charger voltage / current detectors 13 and 14 are installed in each vehicle of the electric vehicle. The voltage supplied to the battery chargers and the current flowing thereto are respectively detected and output to the signal converter 16.

Therefore, the signal converter 16 converts the charging voltage and current of the battery detected by the battery charger voltage / current detectors 13 and 14 into a DC voltage that can be recognized by the computer 17.

Meanwhile, as described above, the tramline voltage / current detectors 3 and 4 while driving the electric railway vehicle continuously detect the voltage and the current supplied to the electric railway vehicle through the tramline, and transmit the electric current to the power analyzer 5.

Therefore, the power analyzer 5 may receive the output signal of the catenary voltage / current detectors 3 and 4 to analyze the amount of power used in the electric railway vehicle, the power factor, the effective value, and the harmonic content.

At this time, since the power consumption outputted from the power analyzer 5 and the information analyzing power factor, effective value and harmonic content are analog signals, the computer 17 may recognize the data through the first A / D converter 6. It can be converted into digital signal.

Therefore, the computer 17 receives the output signals of the respective parts in real time and stores them in itself, and at the same time performs a status diagnosis program of the battery generator stored therein to determine whether the battery charger has a failure. You will be judged.

That is, when the state of the battery chargers of the electric railway vehicle running on the computer 17 is determined and a specific battery charger is determined to be in a malfunction, the current driving speed of the electric railway vehicle and the point at which it is traveling Location information (KP; Kilo Post), mascon and VCB status information, crossroad entry and exit information and wire voltage status information, the failure information of the battery charger, etc. are all stored in itself and such as the monitor 18 By displaying this on the output device, accurate position and speed tracking is possible, including current and voltage status at the point of failure of the battery charger, mascon information, wire voltage and VCB status.

In addition, since the computer 17 further includes wired and wireless communication interfaces 19 and 20, if necessary, the voltage / current of the battery chargers detected as described above, the status information of the mascon, the wire voltage, and the VCB state. , The position and speed information is transmitted to a remote railway operation management system 21 so as to propel and brake at a certain speed at any point when a failure occurs in a specific battery charger among battery chargers of each vehicle in which the railway vehicle is driven. It is possible to recognize exactly what caused the failure and to take necessary follow-up in a short time.

This invention can be implemented in other various forms, without deviating from the mind or main characteristic. Therefore, the above-described embodiments are merely examples in all respects and should not be interpreted limitedly.

The scope of the present invention is shown by the scope of the claims, which are not limited by the specification text, and all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

As described in detail above, according to the present invention, when performing the troubleshooting of the battery chargers in a running electric railway vehicle, the state information of the mascon, the VCB state, the entry of the four wheels together with the voltage and current of the battery charger / By simultaneously memorizing, analyzing, and displaying the passing status, electric power supply status, driving speed, and location information, it is possible to set and adjust the operation schedule of an electric railway vehicle to an optimal state, and accurately determine when a failure occurs in a specific battery charger. It is a very useful invention that can be recognized and acted more quickly and accurately, which greatly increases safety and reliability of battery charging.

Claims (5)

The propulsion signal detection unit detects whether the mascot operated by the engineer operates on the propulsion side so that the contact signal of various relays installed in the electric railway vehicle is operated on the propulsion side, and whether the mascon operated by the engineer operates on the braking side. Braking signal detection unit for detecting the state, VCB state detection unit for detecting the state signal of the breaker switch installed between the pantograph and the transformer, and entering the cross section for detecting the entry / passage signal of the four-lane section that is the power supply section between the substation and the substation A relay contact signal detector comprising a pass signal detector; A DC / DC converter for converting propulsion and braking output from the relay contact signal detector into a DC voltage, a VCB state, and a four-zone entry / pass signal voltage into a DC voltage that can be recognized by a computer; A catenary line voltage detector for detecting a voltage supplied to a railroad car from a catenary line; A catenary current detecting unit for detecting a current flowing in the railroad car from a catenary line; A power analyzer which receives the output signal of the catenary voltage and current detector and analyzes the amount of power used, power factor, effective value, and harmonic content; A first A / D converter converting analog information output from the power analyzer into a digital signal; A speed sensor installed at the wheel of the railway vehicle and generating a pulse signal corresponding to the rotational speed of the wheel while the railway vehicle is traveling; A frequency / voltage converter converting the frequency of the intermittent pulse detected by the speed sensor into a voltage; A second A / D converter converting the analog railroad vehicle speed voltage output from the frequency / voltage converter into a digital signal; A vehicle speed detector configured to receive an output signal of the A / D converter and detect a current traveling speed of a railway vehicle; A counter for counting intermittent pulses detected by the speed sensor; A position information detection unit which receives the output signal of the counter and calculates the traveling distance of the railway vehicle compared to the number of pulses and detects the position thereof; A battery charger voltage detector detecting an output voltage of the battery charger; A battery charger current detector for detecting a current flowing in the battery charger; A signal converter for converting a charging voltage and a current of the battery detected by the battery charger voltage / current detector into a DC voltage that can be recognized by a computer; The output signal of each part is input and stored in real time, and when the failure occurs in a specific battery charger of a running electric railway vehicle, the status information and masculine of the mascon together with the voltage / current status information of the corresponding battery charger at that time. A battery charger diagnostic system for an electric railway vehicle, comprising a computer that stores voltage, VCB status, four-lane entry / pass information, position and speed information, and outputs them to a monitor in real time. delete The method according to claim 1, When a failure occurs in a specific battery charger of a running electric railroad vehicle, the computer displays the voltage / current of the battery charger, the status information of the mascon, the line voltage, the VCB status, the entry / passage information of the cross section, and the location at the time. And the speed information is transmitted in real time to a railway operation management system at a remote location through a wireless communication interface. The method according to claim 1, When a failure occurs in a specific battery charger of a running electric railroad vehicle, the computer displays the voltage / current of the battery charger, the status information of the mascon, the line voltage, the VCB status, the entry / passage information of the cross section, and the location at the time. And the speed information is transmitted to a railway operation management system at a remote location through a wired communication interface. delete

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