JP5833952B2 - Contact voltage measuring device and method for measuring contact voltage between current collector and train line - Google Patents

Description

  The present invention relates to a contact voltage measuring device and a contact voltage measuring method between a current collector and a train line for measuring a contact voltage between a current collector of an electric railway vehicle and a train line.

  Main domestic and foreign current collection system performance evaluation is a method of measuring equipment state such as the height and displacement of a train line and measuring interaction such as pantograph contact force and separation (see, for example, Patent Document 1). By analyzing the dynamics of pantographs and trolley wires based on these measurement data, we have proposed wear countermeasures for current collector materials.

JP 2010-288353 A

  However, many wear phenomena such as corrugated wear on train lines and step wear on power strips and abnormal wear in powering sections could not be explained by dynamics alone. Moreover, the cause of the occurrence of these wear phenomena has not been identified, and no wear countermeasure has been proposed.

  Accordingly, an object of the present invention is to provide a contact voltage measuring device and a contact voltage measuring method between a current collecting device and a train line, which accurately measure a contact voltage between the current collecting device and the train line, which are the controlling factors of wear. It is to provide.

  Hereinafter, the features of the present invention will be described with reference numerals. Note that the reference numerals are for reference, and the present invention is not limited to the embodiments.

  The contact voltage measuring device (60, 60A, 60B) between the current collector and the train line according to the first feature of the present invention is in electrical contact with the train line (12) and collects current from the train line (12). The current collectors (24, 24A, 24B, 24C) that collect the current and supply the collected current to the main circuit (23) of the electric railway vehicle (13) are in electrical contact with the train line (12). And a measurement electrode (44, 44A, 38) that is electrically insulated from the main circuit, and a current collector as a contact voltage between the current collector (24, 24A, 24B, 24C) and the train line (12) The potential difference between (24, 24A, 24B, 24C) and the measurement electrodes (44, 44A, 38) is measured.

  In the first feature, the current collector has a pantograph (24, 24A, 24B), and the pantograph (24, 24A, 24B) is a hull (33) electrically connected to the main circuit (23). , 34, 35, 37) and a current collecting strip (41, 42, 43) that is in electrical contact with the train line (12) and electrically connected to the hull (33, 34, 35, 37). The measurement electrodes (44, 44A) are electrically insulated from the hull (33, 34, 35, 37) and collected as contact voltages between the train line (12) and the pantographs (24, 24A, 24B). The potential difference between the electrogrid plate (41, 42, 43) and the measurement electrode (44, 44A) is measured.

  The measurement electrode (44A) was attached to the hull (35).

  The measurement electrode has a measurement slip plate (44A). The measurement slide plate (44A) includes a voltage sensing slide plate (44a) in electrical contact with the train line (12) and a voltage sensing slide plate (44a). And an insulator (44b) that electrically insulates the hull (35) from each other, and is electrically connected between the voltage sensing plate (44a) and the hull (35) and has a voltage sensing plate ( 44a) A protection circuit (54) that allows the flow of the collected current from the voltage sensing plate (44a) to the hull (35) on condition that the voltage between the hull (35) exceeds a threshold value. Have

  The current collector has a pantograph (24C) having a boat support (39) electrically connected to the main circuit (23), the pantograph (24C) being in electrical contact with the train line (12) and the boat support. A current collecting boat body (37) electrically connected to (39), the measurement electrode being in electrical contact with the train wire (12) and electrically insulated from the boat support (39) It has a hull (38) and measures the potential difference between the current collecting hull (37) and the measurement hull (38) as the contact voltage between the train line (12) and the pantograph (24C).

  The contact voltage measuring device (60C) between the current collector and the train line according to the second feature of the present invention is in electrical contact with the train line (12) and collects a collected current from the train line (12). Then, current is collected via the bus bar (L1) to the first main circuit (23A) of the first electric railway vehicle (13A) and the second main circuit (23B) of the second electric railway vehicle (13B). A current collector (29A) for supplying current and a measurement line that is in electrical contact with the train line (12) and is electrically insulated from the first main circuit (23A) and the second main circuit (23B) A current collector (29B) is included, and the potential difference between the current collector (29A) and the measurement current collector (29B) is measured as a contact voltage between the current collector (29A) and the train line (12).

  The contact voltage measuring device (60D) between the current collector and the train line according to the third feature of the present invention is in electrical contact with the train line (12) and collects a collected current from the train line (12). And a current collector (29C) for supplying a current to the first main circuit (23A) of the first electric railway vehicle (13C), and a second electric line in electrical contact with the train line (12). The measuring current collector (29B) is electrically insulated from the second main circuit (23B) of the electric railway vehicle (13D). The voltage of the current collector (29A) and the measuring current collector (29B) ) And the difference between the voltage of the current collector (29A) and the voltage of the current collector for measurement (29B) as the contact voltage between the current collector (29A) and the train line (12) is measured. To do.

  The method for measuring the contact voltage between the current collector and the train line according to the fourth feature of the present invention is to bring the current collector (24, 24A, 24B) into electrical contact with the train line (12) and to the train line (12 ) To collect the collected current and supply the collected current to the main circuit (23) to bring the measuring electrode (44, 44A) into electrical contact with the train line (12) and the measuring electrode (44, 44). 44A) is electrically insulated from the main circuit, and the contact voltage between the current collector (24, 24A, 24B) and the train line (12) is the current collector (24, 24A, 24B) and the measurement electrode (44, 44A) is measured.

  In the above fourth feature, the hull (33, 34, 35) electrically connected to the main circuit (23) and the current collector electrically connected to the hull (33, 34, 35) A pantograph (24, 24A, 24B) serving as the current collector having a ground plate (41, 42, 43) is prepared, and the measurement electrode is electrically insulated from the hull (33, 34, 35). The measurement ground plates (44, 44A) are prepared, the current collecting ground plates (41, 42, 43) are brought into electrical contact with the train line (12), and the measurement ground plates (44, 44A) are brought into contact with the train line (12). ) In electrical contact, and the potential difference between the current collectors (41, 42, 43) and the measurement slider (44, 44A) as the contact voltage between the pantograph (24, 24A, 24B) and the train line (12). Measure.

  The measurement slide plate having a voltage sensing slide plate (44a) and an insulator (44b) for electrically insulating the voltage sensing slide plate (44a) and the boat body (35) is prepared. 44a) and a hull (35), a protective circuit (54) electrically connected is prepared, and the voltage sensing ground plate (44a) is brought into electrical contact with the train line (12) so that the voltage sensing ground plate On the condition that the voltage between (44a) and the hull (35) exceeds the threshold value of the protection circuit (54), the hull (35) is removed from the voltage sensing plate (44a) via the protection circuit (54). ) Allow current flow to the current collector.

  According to a fifth aspect of the present invention, there is provided a method for measuring a contact voltage between a current collector and a train line. The first electric railway is configured to collect a collected current from a train line (12) and pass through a bus line (L1). A current collector (29A) is provided for supplying a collected current to the first main circuit (23A) of the vehicle (13A) and the second main circuit (23B) of the second electric railway vehicle (13B). A current collector (29B) for measurement that is electrically insulated from the first main circuit (23A) and the second main circuit (23B) is prepared, and the current collector (29A) is electrically connected to the train line (12). The measurement current collector (29B) is brought into electrical contact with the train line (12) and the current collector (29A) and the measurement voltage are measured as the contact voltage between the current collector (29A) and the train line (12). The potential difference from the current collector (29B) is measured.

  According to a sixth aspect of the present invention, there is provided a method for measuring a contact voltage between a current collector and a train line. A current collecting current is collected from a train line (12) and the first electric railway vehicle (13C) A current collecting device (29A) for supplying a collected current to the main circuit (23A) is prepared, and the current collecting for measurement is electrically insulated from the second main circuit (23B) of the second electric railway vehicle (13D). A device (29B) is prepared, the current collector (29A) is brought into electrical contact with the train line (12), and the current collector (29B) for measurement is brought into electrical contact with the train line (12). The voltage of the device (29A) and the voltage of the current collector (29B) are measured, and the voltage of the current collector (29A) is measured as the contact voltage between the train line (12) and the current collector (29A). The difference from the voltage of the current collector (29B) is measured.

  According to the present invention, it is possible to measure with high accuracy the contact voltage between a sliding current collector and a train line, which has been impossible until now. This makes it possible to clarify the phenomenon in units of current collectors or current collectors.

1 is a schematic diagram of an electric railway system according to a first embodiment. It is a schematic diagram of the contact voltage measuring apparatus of the pantograph and trolley wire shown in FIG. It is a schematic diagram of the contact voltage measuring apparatus of the pantograph and trolley wire which concerns on 2nd Embodiment. It is a schematic diagram of the contact voltage measuring apparatus of the pantograph and trolley wire which concerns on 3rd Embodiment. It is a schematic diagram of the contact voltage measuring apparatus of the pantograph and trolley wire which concerns on 4th Embodiment. It is a conceptual diagram which shows the effect | action of the contact voltage measuring apparatus shown in FIG. It is a schematic diagram of the contact voltage measuring apparatus of the pantograph and trolley wire which concerns on 4th Embodiment. It is a schematic diagram of the contact-voltage measuring apparatus of the pantograph and trolley wire which concerns on 5th Embodiment. It is a schematic diagram of the contact voltage measuring apparatus of the pantograph and trolley wire which concerns on 6th Embodiment. It is a graph which shows the measurement result of the contact voltage of the pantograph and trolley wire concerning an example. It is a graph which shows the measurement result of the contact voltage of the pantograph and trolley wire concerning an example.

  Hereinafter, embodiments will be described in detail with reference to the drawings.

First Embodiment As shown in FIG. 1, an electric railway system 10 includes a trolley line 12 as a train line electrically connected to a substation 11, and an electric railway vehicle 13 electrically connected to the trolley line 12. The rail 14 is electrically connected to the electric railway vehicle 13 and the substation 11.

  The electric railway vehicle 13 includes a vehicle body 21, a wheel 22 that supports the vehicle body 21 and is disposed on the rail 14, a main circuit including an inverter 23 mounted on the vehicle body 21, and a current collector supported by the vehicle body 21. The pantograph 24 is connected to the inverter 23 and the wheel 22 is rotated. For example, a load 26 as a motor is included. In addition to the pantograph, the current collector may be a low-speed tramway bus gel, a trolley pole, or a subway current collector shoe. As the train line, in addition to the trolley line, a conductive steel rail and a third rail may be used.

  The main circuit converts the collected current from direct current to alternating current by the inverter 23, operates the load 26, and rotates the wheel 22.

  The pantograph 24 includes a frame 31 disposed on the vehicle body 21, a rhombus frame 32 supported on the frame 31, and a boat body 33 supported by the frame 32.

  As shown in FIG. 2, the pantograph 24 includes a boat support 39, a first current collecting slab 41, a second current collector that is arranged in parallel on the boat bodies 33, 33 installed on the boat support 39. It has a ground plate 42, a third current collecting ground plate 43, and a measurement ground plate 44 as a measurement electrode. Each of the first current collecting plate 41, the second current collecting plate 42, and the third current collecting plate 43 is in electrical contact with the trolley wire 12. The measurement ground plate 44 includes a voltage sensing ground plate 44 a as a conductor that is in electrical contact with the trolley wire 12 and a bake plate 44 b as an insulator that insulates the voltage sensing ground plate 44 a from the boat body 33.

  Between each of the first current collecting plate 41, the second current collecting plate 42, the third current collecting plate 43 and the measuring plate 44, first, second and Third measuring instruments 51, 52 and 53 are connected.

  A contact voltage measuring device 60 between a pantograph and a trolley wire includes a first current collecting plate 41, a second current collecting plate 42, a third current collecting plate 43, a measuring plate 44, A first measuring device 51 connected between the current collecting slide plate 41 and the voltage sensing slide plate 44a of the measuring slide plate 44, and a connection between the second current collecting slide plate 42 and the voltage sensing slide plate 44a. And a third measuring device 53 connected between the third current collecting plate 43 and the voltage sensing plate 44a. The measuring device 60 measures the potential difference between each of the current collecting strips 41, 42, 43 and the trolley wire 12, that is, the contact voltage, using the first, second, and third measuring devices 51, 52, 53.

  Next, the measurement principle of the contact voltage between the current collecting plates 41, 42, 43 and the trolley wire 12 will be described.

  As shown in FIG. 3, the measurement circuit 100 includes a power supply 15 and a resistor 16 connected in series between the trolley wire 12 and the boat body 34, and current collecting plates 41 arranged in two rows on the boat body 34. And a measuring slip plate 44. The current collecting plate 41 is electrically connected to the trolley wire 12.

  The measurement circuit 100 includes a measuring instrument 54 connected between the voltage sensing ground plate 44a and the current collecting ground plate 41.

  The collected current flows from the power source 15 through the trolley wire 12 and the current collecting strip 41 to the boat body 34. As a result, a voltage drop occurs at the contact portion between the trolley wire 12 and the current collecting strip 41. On the other hand, the measurement slip plate 44 and the boat body 34 are insulated, and no current collection current flows. For this reason, there is no voltage drop between the trolley wire 12 and the voltage sensing strip 44a, and the voltage sensing strip 44a and the trolley wire 12 can be regarded as the same potential. Therefore, by measuring the potential difference between the current collecting plate 41 and the measuring ground plate 44, the potential difference between the current collecting plate 41 and the trolley wire 12 can be measured.

  Next, a method for using the electric railway system 10 will be described.

  In FIG. 1, the collected current is converted into direct current at the substation 11 and flows to the trolley wire 12. The collected current flows from the pantograph 24 to the inverter 23, and is converted from direct current to alternating current by the inverter 23. The collected current activates the load 26 and flows to the rail 14 via the wheels 22. Thereby, the wheel 22 is rotated and the electric railway vehicle 13 is advanced.

  Here, in FIG. 2, the first current collecting plate 41, the second current collecting plate 42, the third current collecting plate 43, and the measuring plate 44 contact or slide with the trolley wire 12. The current collecting current flows to the first current collecting plate 41, the second current collecting plate 42, and the third current collecting plate 43, and passes through the boat body 33, the boat support 39, and the frame 32 to load 26. To reach. On the other hand, since the collected current is insulated by the bake plate 44b, it does not flow from the voltage sensing slip plate 44a to the boat body 33. For this reason, there is no voltage drop between the trolley wire 12 and the voltage sensing ground plate 44a, and the voltage sensing ground plate 44a functions as an electrode for measurement.

  At this time, the first measuring device 51 measures a potential difference between the first current collecting plate 41 and the voltage sensing plate 44a as a contact voltage between the first current collecting plate 41 and the trolley wire 12. . The second measuring device 52 measures the potential difference between the second current collecting plate 42 and the voltage sensing surface 44 a as a contact voltage between the second current collecting plate 42 and the trolley wire 12. The third measuring device 53 measures a potential difference between the third current collecting plate 43 and the voltage sensing plate 44 a as a contact voltage between the third current collecting plate 43 and the trolley wire 12.

  According to the present embodiment, since the measurement slip plate 44 is used as a measurement electrode, the contact voltage between each of the first, second and third current collecting slide plates 41, 42, 43 and the trolley wire 12 is accurately measured. Can be measured.

Second Embodiment As shown in FIG. 4, the pantograph and trolley wire contact voltage measuring device 60 </ b> A is arranged in two rows on the boat body 35 of the pantograph 24 </ b> A and is in contact with the trolley wire 12. A sliding plate 41 and a second current collecting sliding plate 42; a mounting plate 36 attached to the boat body 35; a measurement sliding plate 44A that is installed on the mounting plate 36 and that is in electrical contact with the trolley wire 12; 1 has a measuring device 51 for measuring the potential difference between the current collecting plate 41 and the voltage sensing plate 44a.

  According to the present embodiment, the measurement apparatus 60A is configured to calculate a potential difference between the first current collecting plate 41 and the trolley wire 12 from a potential difference between the first current collecting plate 41 and the voltage sensing ground plate 44a. That is, the contact voltage can be measured.

  Moreover, since the measurement slip plate 44A is added to the pantograph 24A later, the current collecting capacity of the pantograph 24A can be maintained without decreasing.

Third Embodiment As shown in FIG. 5, a contact voltage measuring device 60B between a pantograph and a trolley wire is used for impedance conversion connected between a current collecting plate 41 and a voltage sensing plate 44a of the measuring plate 44. , The telemeter 28 connected to the output terminal of the operational amplifier 27, and a protection circuit 54 as a clamp circuit connected between the voltage sensing slip plate 44a and the boat body 35. The protection circuit 54 includes diodes 54a and 54b connected in series, and diodes 54c and 54d arranged in parallel in the opposite direction to the diodes 54a and 54b. The diodes 54a, 54b, 54c, and 54d are set to the on voltage Vf, and allow the current to pass when the on voltage Vf is exceeded.

  According to the measuring device 60B, as shown in FIG. 6A, the current collecting current flows through the current collecting slab 41, the boat body 35, and the frame 32 at the normal time. The potential difference between the current collecting plate 41 and the measuring plate 44 is input to the operational amplifier 27. The operational amplifier 27 outputs a potential difference having the same magnitude as the potential difference input by the impedance conversion function. The output potential difference is recorded by the telemeter 28 as a contact voltage between the current collector 31 and the trolley wire 12.

  As shown in FIG. 6 (B), when the current collecting strip 41 is separated from the trolley wire 12, the voltage between the boat body 35 and the trolley wire 12 increases. When this voltage exceeds the sum 2Vf (threshold value) of the ON voltage of the diode 54a and the diode 54b, the diodes 54a and 54b become conductive. The collected current flows in the order of the trolley wire 12, the voltage sensing strip 44 a, the protection circuit 54, and the boat body 35.

  On the other hand, since a voltage of Vf or higher is not applied to the diodes 54a and 54b, a voltage of 2Vf or higher is not applied to the measurement path, the measuring instrument is protected, and current collection continues. Further, during regeneration, that is, when the current direction is reversed, the diodes 54c and 54d are similarly turned on, and the measuring instrument is protected.

  According to the present embodiment, by applying the protection circuit 54 using a clamp diode to the measurement circuit, it is possible to prevent an excessive voltage from being applied to the measuring instrument when the current collecting strip 41 is disconnected, thereby realizing a safe measurement. .

Fourth Embodiment As shown in FIG. 7, a first electric railway vehicle 13A is a current collector connected to a first main circuit including a first inverter 23A mounted on a first vehicle body 21A. It has a current collecting pantograph 29A. The second electric railway vehicle 13B has a measurement pantograph 29B that is electrically insulated from the second main circuit including the second inverter 23B mounted on the second vehicle body 21B. The current collector pantograph 29A and the second main circuit including the second inverter 23B are connected to the bus using the bus L1. The current collecting pantograph 29 </ b> A and the measurement pantograph 29 </ b> B are connected by a measuring device 55.

  The contact voltage measuring device 60C between the pantograph and the trolley wire is a current collector pantograph 29A and a measurement pantograph 29B that are in electrical contact with the trolley wire 12, and a measuring instrument that measures a potential difference between the current collector pantograph 29A and the measurement pantograph 29B. 55.

  According to this embodiment, the current collecting pantograph 29A collects the collected current from the trolley wire 12 and supplies the collected current to the inverter 23A of the first main circuit and the inverter 23B of the second main circuit. On the other hand, since the measurement pantograph 29B is separated from the bus and the second main circuit, it has the same potential as the trolley line 12. By measuring the potential difference between the current collecting pantograph 29A and the measurement pantograph 29B with the measuring device 55, the contact voltage between the sliding plate of the current collecting pantograph 29A and the trolley wire 12 can be measured.

Fifth Embodiment As shown in FIG. 8, the first electric railway vehicle 13C is a current collector electrically connected to a first main circuit including a first inverter 23A mounted on the first vehicle body 21C. A current collector pantograph 29A as a device, and a voltage divider 56A connected between the current collector pantograph 29A and the output side of the first inverter 23A are included.

  The second electric railway vehicle 13D is separated from the second main circuit including the second inverter 23B mounted on the second vehicle body 21D and is a current collector for measurement as an electrically insulated current collector for measurement. The pantograph 29B has a second voltage divider 56B electrically connected between the measurement pantograph 29B and the output side of the second inverter 23B.

  The current collecting pantograph 29A and the measurement pantograph 29B are not drawn through the bus.

  The contact voltage measuring device 60D between the pantograph and the trolley wire includes a current collecting pantograph 29A and a measuring pantograph 29B that are in electrical contact with the trolley wire 12, a first voltage divider 56A installed in the current collecting pantograph 29A, and a measuring device. And a second voltage divider 56B installed on the pantograph 29B.

  The first voltage divider 56A measures the voltage of the current collecting pantograph 29A, and the second voltage divider 56B measures the voltage of the measurement pantograph 29B. The contact voltage between the current collector pantograph 29A and the trolley wire 12 can be measured from the difference between the voltage of the current collector pantograph 29A and the voltage of the measurement pantograph 29B.

Sixth Embodiment As shown in FIG. 9, a contact voltage measuring device 60E between a pantograph and a trolley wire is attached to a boat support 39 of the pantograph 24C and is in contact with the trolley wire 12; It has a measuring boat 38 as an electrode. The current collecting boat body 37 is in electrical contact with the trolley wire 12. The measurement boat 38 has a bake plate 38b as an insulator for insulating the boat 38a. Between the current collecting boat body 37 and the measuring boat body 38, a measuring device 57 for measuring voltage is provided.

  The contact voltage measuring device 60E between the pantograph and the trolley wire has a current collecting boat body 37, a measuring boat body 38, and a measuring device 57 connected between the current collecting boat body 37 and the measuring boat body 38.

  According to the present embodiment, the measuring device 60E can measure the potential difference between the current collecting boat body 37 and the trolley wire 12, that is, the contact voltage, by the measuring device 57.

  Using a device simulating the measurement circuit 100 shown in FIG. 3, the potential difference between the ground plate 45a of the current collector strip 45 and the voltage sensing strip 44a of the measurement strip 44, the trolley wire 12 and the current collector strip 45 A potential difference and an energization current with the sliding plate 45a were measured. The energization current was set to 1A from 0 to 5A. The potential difference was measured through an insulation amplifier.

  As shown in FIG. 10 and FIG. 11, the potential difference between the measurement slip plate 44 and the current collecting slip plate 45 coincides with the potential difference between the trolley wire 12 and the current collector slip plate 45. In other words, it was confirmed that the contact voltage between the current collecting plate 45 and the trolley wire 12 can be measured by measuring the potential difference between the current collecting plate 45 and the measuring plate 44.

  In addition, this invention is not limited to this embodiment, Moreover, each embodiment can be changed and corrected in the range which does not change the meaning of invention.

10 Electric Railway System 11 Substation 12 Trolley Line (Train Line)
13 Electric Railway Vehicle 14 Rail 21 Car Body 22 Wheel 23 Inverter 24 Pantograph (Current Collector)
26 Load 33 Ship body 39 Boat support 41, 42, 43 Current collecting plate 44, 44A Measuring plate 51, 52, 53, 55 Measuring device 56A, 56B Voltage divider 60, 60A, 60B, 60C, 60D, 60E Pantograph and Contact voltage measuring device with trolley wire

Claims (12)

A current collector that makes electrical contact with the train line and collects the collected current from the train line to supply the collected current to the main circuit of the electric railway vehicle;
Having measuring electrodes in electrical contact with the train wire and electrically isolated from the main circuit;
Measure the potential difference between the current collector and the measurement electrode as the contact voltage between the current collector and the train line.
Contact voltage measuring device between current collector and train line. The current collector has a pantograph,
The pantograph has a hull electrically connected to the main circuit, and a current collecting ground plate electrically connected to the train line and electrically connected to the hull.
The measuring electrode is electrically insulated from the hull;
Measure the potential difference between the current collector and the measurement electrode as the contact voltage between the train line and the pantograph.
The contact voltage measuring device according to claim 1. The measurement electrode is attached to the hull,
The contact voltage measuring device according to claim 2. The measurement electrode has a measurement slip plate,
The measurement sliding plate has a voltage sensing sliding plate that is in electrical contact with the train line, and an insulator that electrically insulates the voltage sensing sliding plate and the boat body,
The current collected from the voltage sensing board to the hull is electrically connected between the voltage sensing board and the hull and the voltage between the voltage sensing board and the hull exceeds the threshold. Having a protection circuit that allows the flow of
The contact voltage measuring device according to claim 2 or 3. The current collector has a pantograph having a boat support electrically connected to the main circuit,
The pantograph has a current collector boat that is in electrical contact with the train line and electrically connected to the boat support,
The measurement electrode has a measurement hull which is in electrical contact with the train line and is electrically insulated from the boat support,
Measure the potential difference between the current hull and the measurement hull as the contact voltage between the train line and the pantograph.
The contact voltage measuring device according to any one of claims 1 to 4. The first main circuit of the first electric railway vehicle and the second main circuit of the second electric railway vehicle are in electrical contact with the train line and collect the collected current from the train line and pass through the bus line. A current collector for supplying current to
A current collector for measurement that is in electrical contact with the train line and is electrically insulated from the first main circuit and the second main circuit;
Measure the potential difference between the current collector and the measurement current collector as the contact voltage between the current collector and the train line.
Contact voltage measuring device between current collector and train line. A current collector that is in electrical contact with the train line and collects the collected current from the train line to supply the collected current to the first main circuit of the first electric railway vehicle;
A current collector for measurement that is in electrical contact with the train line and is electrically isolated from the second main circuit of the second electric railway vehicle;
Measure each of the voltage of the current collector and the voltage of the current collector for measurement,
Measure the difference between the current collector voltage and the measurement current collector voltage as the contact voltage between the current collector and the train line.
Contact voltage measuring device between current collector and train line. The current collector is brought into electrical contact with the train line and the current collected from the train line is supplied to the main circuit,
The measurement electrode is in electrical contact with the train line and the measurement electrode is electrically insulated from the main circuit,
Measure the potential difference between the current collector and the measurement electrode as the contact voltage between the current collector and the train line.
Method for measuring contact voltage between current collector and train line. Prepare a pantograph as the current collector having a hull electrically connected to the main circuit and a current collector sliding plate electrically connected to the hull,
Prepare a measuring strip as the measurement electrode that is electrically insulated from the hull,
Electrically contacting the current collector strip with the train line;
Electrically contacting the measuring strip with the train wire;
Measure the potential difference between the current collector and the measuring slider as the contact voltage between the pantograph and the train line.
The contact voltage measuring method according to claim 8. Preparing the measuring slip plate having a voltage sensing slip plate and an insulator for electrically insulating the voltage sensing slip plate and the ship body;
Prepare a protective circuit that is electrically connected between the voltage sensing ground plate and the hull.
Electrically contact the voltage sensing strip with the train line,
Allowing the flow of current collected between the voltage sensing ground plate and the hull via the protection circuit, provided that the voltage between the voltage sensing ground plate and the hull exceeds the threshold value of the protection circuit;
The contact voltage measuring method according to claim 9 . A current collector that collects the collected current from the train line and supplies the collected current to the first main circuit of the first electric railway vehicle and the second main circuit of the second electric railway vehicle via the bus. Prepare the equipment,
Preparing a current collector for measurement electrically insulated from the first main circuit and the second main circuit;
The current collector is in electrical contact with the train line,
Electrically contact the measuring current collector with the train line,
Measure the potential difference between the current collector and the measurement current collector as the contact voltage between the current collector and the train line.
Method for measuring contact voltage between current collector and train line. Preparing a current collector that collects the collected current from the train line and supplies the collected current to the first main circuit of the first electric railway vehicle;
Preparing a current collector for measurement electrically insulated from the second main circuit of the second electric railway vehicle;
The current collector is in electrical contact with the train line,
Electrically contact the measuring current collector with the train line,
Measure each of the voltage of the current collector and the voltage of the current collector for measurement,
Measure the difference between the voltage of the current collector and the voltage of the current collector as the contact voltage between the train line and the current collector.
Method for measuring contact voltage between current collector and train line.