CN110103720B - Non-contact type annular current-receiving train control system and method - Google Patents
Non-contact type annular current-receiving train control system and method Download PDFInfo
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- CN110103720B CN110103720B CN201910453514.5A CN201910453514A CN110103720B CN 110103720 B CN110103720 B CN 110103720B CN 201910453514 A CN201910453514 A CN 201910453514A CN 110103720 B CN110103720 B CN 110103720B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L5/00—Current collectors for power supply lines of electrically-propelled vehicles
- B60L5/005—Current collectors for power supply lines of electrically-propelled vehicles without mechanical contact between the collector and the power supply line
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2200/00—Type of vehicles
- B60L2200/26—Rail vehicles
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Abstract
The invention discloses a non-contact type annular current-receiving train control system and method, which comprises a control device, an annular current-receiving device, a monitoring device, an electric arc inspection device and an external field regulation and control device, wherein the annular current-receiving device, the monitoring device, the electric arc inspection device and the external field regulation and control device are all in communication connection with the control device, the control device is positioned inside a non-contact type train, the annular current-receiving device comprises a lifting bow mechanical arm and an annular current collector which are fixedly connected, the lifting bow mechanical arm is in communication connection with the control device, the lifting bow mechanical arm is arranged at the top end of the non-contact type train, the annular current collector is electrically connected with a contact wire through a. The invention changes the traditional sliding electric contact current receiving mode, improves the mode into annular current receiving on the basis of non-contact current receiving, avoids the defects that the sliding plate and the contact line of the contact current receiving are abraded too fast and the intermittent bow net is off-line, and ensures that the annular current receiving is more stable.
Description
Technical Field
The invention belongs to the technical field of bow net systems, and particularly relates to a non-contact type annular current-receiving train control system and method.
Background
The pantograph system (pantograph slide plate/contact wire) is the only way for the high-speed train to obtain electric energy, so the quality of pantograph relation directly determines the quality of current collection. Along with the further promotion of high speed train's speed, the heavy load is further strengthened, the bow net vibration is constantly aggravated, the frequency that takes place mechanical shock constantly rises, the pantograph mechanical damage takes place in the time of, the pantograph slide wearing and tearing are also very serious, need change the carbon slide in a large number, because high speed train is very high to the electrical property and the mechanical properties requirement of pantograph slide and contact wire, want to satisfy good electric conductivity, the wearability is high, anti mechanical shock is good, and because the contact current receiving mode has the extreme value, so the further speed-raising of high speed train has been restricted, traditional contact biography can not satisfy future train heavy load, the high-speed operating condition. And the new non-contact energy transfer is susceptible to air flow interference and ablation problems remain serious.
The electric arc as the conductive plasma has better energy transfer efficiency, and can be used as a conductive medium in the fields that the electric arc cannot be extinguished and the traditional contact type energy transfer field as a brand new energy transfer and current receiving mode. The method not only breaks through the limitations of impact vibration and friction and abrasion of the traditional contact mode, but also surpasses the energy transfer efficiency of induction energy transfer, and completes high-power transmission. However, the arc action process is accompanied by huge thermal action and electric action, if the arc continuously carries out single-point ablation, serious erosion action can be generated on electrode materials in a short time, the continuous ablation can influence the surface appearance of the electrode so as to influence the current receiving quality, and then the arc motion needs to be regulated and controlled to reduce the erosion, ensure the transmission efficiency and protect the electrical equipment. Therefore, the non-contact annular current collection for electric energy transmission is a current collection mode with great prospect, and can meet the challenges of heavy load and high speed of future trains.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a non-contact type annular current-collecting train control system and a non-contact type annular current-collecting train control method, which are used for solving the problems that the mechanical impact among bow nets is large, the material abrasion is serious and the service performance of a bow net current-collecting system is rapidly reduced in the prior art.
In order to achieve the purpose of the invention, the invention adopts the technical scheme that:
a non-contact annular current-receiving train control system comprises a control device, an annular current-receiving device, a monitoring device, an electric arc inspection device and an external field regulation and control device, wherein the annular current-receiving device, the monitoring device, the electric arc inspection device and the external field regulation and control device are all in communication connection with the control device, the control device is located inside a non-contact train, the annular current-receiving device comprises a lifting bow mechanical arm and an annular current receiver, the lifting bow mechanical arm and the annular current receiver are fixedly connected, the lifting bow mechanical arm is in communication connection with the control device, the lifting bow mechanical arm is arranged at the top end of the non-contact train, the annular current receiver is electrically connected with a contact wire through a rotating electric arc, the external field regulation and control device is electrically connected with the annular.
Furthermore, an emergency arc starting device is arranged at the arc burning interval between the annular current collector and the contact line.
Further, the emergency arc striking device is a full-automatic arc burner.
The beneficial effect of adopting the further scheme is as follows: the full-automatic arc burner is additionally arranged, so that the electric arc can be re-ignited under the condition of accidental extinguishment.
Further, monitoring devices includes all with controlling means communication connection's distance sensor, two anemometers and four at least temperature sensor, distance sensor sets up at annular current collector inboard, two anemometers set up respectively in the place ahead and the rear of annular current collector, four temperature sensor all sets up on annular current collector internal surface.
The beneficial effect of adopting the further scheme is as follows: the temperature sensor, the distance sensor and the anemometer can detect the temperature of each position of the annular current collector, the arc voltage current waveform at each moment and the size of the airflow field of the annular current collector.
Further, the electric arc inspection device comprises an electric signal monitor in communication connection with the control device, the electric signal monitor is arranged at the top of the non-contact train and used for monitoring an electric signal between the annular current collector and the contact wire.
The beneficial effect of adopting the further scheme is as follows: an electrical signal monitor monitors an electrical signal between the annular current collector and the contact wire.
Furthermore, the external field regulation and control device comprises two excitation exciters and two current regulators which are in communication connection with the control device, the two excitation exciters are respectively arranged at the lower front and the side of the annular current collector, and the two current regulators are respectively arranged at the front end and the rear end of the annular current collector.
The beneficial effect of adopting the further scheme is as follows: the excitation exciter and the current stabilizer are operated to regulate the motion of the electric arc, so that the material is protected from being ablated, and the electric arc can be more efficiently and stably transferred.
Further, the annular current collector is made of a high-conductivity and high-temperature-resistant material.
The beneficial effect of adopting the further scheme is as follows: the high conductivity can ensure the energy transfer efficiency, and the current receiving ring can consume a large amount of energy and resist high temperature, so that the current receiving ring can resist the ablation of electric arc to a certain degree.
A non-contact annular current-receiving train control method comprises the following steps:
s1: the annular current collector is opened firstly, the mechanical arm is controlled by the control device to slowly lift the bow, then the annular current collector is controlled to be closed, the contact wire is arranged in the annular current collector, and the contact wire is contacted with the upper surface in the annular current collector;
s2: monitoring whether the annular current collector is in good contact with the contact wire or not through an electric signal monitor, if so, entering a step S3, otherwise, returning to the step S1;
s3: judging the position relation between the annular current collector and the contact wire through a distance sensor, and controlling a pantograph lifting mechanical arm to slowly lift a pantograph according to the position relation through a control device, so that the contact wire is positioned at the center of the annular current collector and an electric arc is generated;
s4: a transverse magnetic field is generated in the advancing direction and the side of the train by an excitation exciter, so that the electric arc does circular motion by taking the contact line as the center and the annular current collector as the radius and moves forwards along the contact line;
s5: the position and the temperature of the annular current collector and the distribution of airflow fields at two ends of the annular current collector are monitored in real time through a monitoring device, and the annular current collector is regulated and controlled through an external field regulating and controlling device;
s6: judging whether the electric arc is accidentally extinguished through an electric signal monitor, if so, reigniting the electric arc through a full-automatic arc-burning device, and entering a step S7, otherwise, directly entering the step S7;
s7: if an arc quenching command is received, controlling the pantograph lifting mechanical arm to descend by the control device so that the annular current collector is completely contacted with the contact line for arc quenching;
s8: and detecting whether the arc is completely extinguished through an electric signal monitor and a temperature sensor, if so, ending the operation, and otherwise, repeating the step S7 to extinguish the arc.
Further, in step S8, a specific method for detecting whether the arc is completely extinguished through the electrical signal monitor and the temperature sensor includes: judging through voltage amplitude fluctuation, contact resistance and real-time temperature of the electric signals, and transmitting the electric signals to a control device;
if the voltage amplitude fluctuation in the electric signal is less than 5% of the average voltage value;
the ratio of the voltage to the current in the electric signal is less than 0.5, namely the contact resistance is less than 0.5 omega;
and the real-time temperature is lower than 2000 degrees;
if the three items are met, outputting complete arc quenching, otherwise, outputting incomplete arc quenching.
The invention has the beneficial effects that:
(1) the invention changes the traditional sliding electric contact current receiving mode, improves the mode into annular current receiving on the basis of non-contact current receiving, avoids the defect that the sliding plate and the contact line of the contact current receiving are abraded too fast, and ensures that the annular current receiving is more stable.
(2) The invention breaks through the energy transfer limit of the traditional contact type current receiving, has large power and high efficiency which is up to more than 95 percent, and avoids the defect that the speed of a high-speed train is further improved because the energy transfer electric contact has a limit value for transferring current.
(3) The non-contact current receiving mode greatly reduces the requirements on the mechanical strength and the ablation resistance of the current receiving material, can also enable the electric arc to do annular current receiving motion through a transverse magnetic field under the action of excitation, can also reduce the phenomenon of arc root lag caused by an airflow field, and reduces the ablation of the electric arc on the current receiving material by regulating and controlling the electric arc motion.
(4) The non-contact stable arcing current receiving mode avoids the influence of overvoltage generated by arcing and extinguishing of the pantograph-catenary vibration off-line arc on a traction power supply system in the pantograph-catenary sliding current taking process, ensures the reliability of train energy supply and ensures the safe operation of a train.
Drawings
FIG. 1 is a schematic diagram of a control system according to the present invention;
FIG. 2 is a block diagram of a control system according to the present invention;
FIG. 3 is a flow chart of a control method of the present invention;
FIG. 4 is a schematic diagram of the force applied to the arc in the applied field and the magnetic field in the toroidal current collector according to the present invention;
fig. 5 is a schematic diagram of the operation of the annular current collector.
Wherein, 1, a lifting bow mechanical arm; 2. an annular current collector; 3. a contact line; 4. a non-contact train.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined in the appended claims, and all matters produced by the invention using the inventive concept are protected.
A non-contact annular current-receiving train control system is shown in figures 1 and 2, and comprises a control device, an annular current-receiving device, a monitoring device, an electric arc inspection device and an external field regulation and control device, wherein the annular current-receiving device, the monitoring device, the electric arc inspection device and the external field regulation and control device are all in communication connection with the control device, the control device is located inside a non-contact train 4, the annular current-receiving device comprises a lifting bow mechanical arm 1 and an annular current receiver 2 which are fixedly connected, the lifting bow mechanical arm 1 is in communication connection with the control device, the lifting bow mechanical arm 1 is arranged at the top end of the non-contact train 4, the annular current receiver 2 is electrically connected with a contact wire 3 through a rotating electric arc, the external field regulation and control device is electrically connected with the annular current receiver 2, and the. The lifting bow mechanical arm 1 is a single-arm pantograph of model TSG-400/25.
At whole current loop, transmit the electric energy to novel contact net by drawing the substation, electric energy on the novel contact net passes through annular current collector 2 and transmits the electric energy to non-contact train 4 with the form of electric arc, and the electric current of non-contact train 4 is got back to the traction substation by rail and return line.
In the embodiment of the invention, an emergency arc starting device is arranged at the arcing interval between the annular current collector 2 and the contact wire 3. The emergency arc starting device is a full-automatic arc burner. The model of the full-automatic arc burner is TXT 2-WPF-28A.
During operation, if the airflow field is overlarge and other extreme conditions exist, the electric arc can be extinguished, the full-automatic arc burner is controlled to be re-fired, whether re-firing is carried out or not is judged through the current signal, and the full-automatic arc burner is turned off when the current signal is not zero.
In the embodiment of the invention, the monitoring device comprises a distance sensor, two wind meters and at least four temperature sensors, wherein the distance sensor, the two wind meters and the at least four temperature sensors are all in communication connection with the control device, the distance sensor is arranged on the inner side of the annular current collector 2, the two wind meters are respectively arranged in front of and behind the annular current collector 2, and the four temperature sensors are all arranged on the inner surface of the annular current collector 2. The distance sensor, the temperature sensor and the anemometer are all fed back to a display screen of the control device through connecting wires, and displayed information comprises the temperature of each position of the annular current collector, the arc voltage current waveform of each moment and the size of the airflow field of the annular current collector. The model of the temperature sensor is MPT614-GY, the model of the distance sensor is SLDS-D10/D20, and the model of the anemoscope is JX 1000-1F.
In an embodiment of the present invention, the arc inspection apparatus includes an electrical signal monitor in communication with the control apparatus, the electrical signal monitor being disposed on top of the contactless train 4 and monitoring an electrical signal between the annular current collector 2 and the contact wire 3. The model of the electric signal monitor is an SDS3000 intelligent oscilloscope.
In the embodiment of the invention, the external field regulation and control device comprises two excitation exciters and two current regulators which are both in communication connection with the control device, the two excitation exciters are respectively arranged at the lower front and the side of the annular current collector 2, and the two current regulators are respectively arranged at the front end and the rear end of the annular current collector 2. Data obtained by the monitoring device is fed back to the control device, and then the excitation exciter and the current stabilizer are regulated and controlled, so that the excitation exciter and the current stabilizer are operated to regulate and control the movement of the electric arc, the material is protected from being ablated, and the electric arc can be transferred more efficiently and stably. The excitation exciter is of the type CTXQ-600.
In the embodiment of the present invention, the annular current collector 2 is made of a high-conductivity and high-temperature-resistant material having a certain thickness and length. The annular current collector has certain thickness to ensure the mechanical strength, and certain length to make the arc reciprocate in train to reduce ablation and reduce disturbance in airflow field.
A non-contact type annular current-receiving train control method, as shown in fig. 3, includes the following steps:
s1: opening the annular current collector, as shown in fig. 5(1), controlling the mechanical arm to lift the bow through the control device, closing the annular current collector when the annular current collector reaches a certain height, disposing the contact wire in the annular current collector, and contacting the contact wire with the inner upper surface of the annular current collector, as shown in fig. 5 (2);
s2: monitoring whether the annular current collector is in good contact with the contact wire or not through an electric signal monitor, if so, entering a step S3, otherwise, returning to the step S1;
if the voltage amplitude fluctuation in the electric signal is less than 5% of the average voltage value, the annular current collector is in good contact with the contact line.
S3: the position relationship between the annular current collector and the contact wire is judged through the distance sensor, and the pantograph lifting mechanical arm is controlled by the control device to slowly lift the pantograph according to the position relationship, so that the contact wire is positioned at the center of the annular current collector and an electric arc is generated as shown in (3) of fig. 5;
s4: a transverse magnetic field is generated in the advancing direction and the side of the train by an excitation exciter, so that the electric arc performs circular motion by taking a contact line as a center and taking an annular current collector as a radius, as shown in a graph of (4) of fig. 5, and moves forwards along the contact line;
when the two electrodes are separated, one of the following steps: because the contact resistance is continuously increased, the temperature is continuously increased, a metal melting bridge is formed, and a large amount of metal steam is generated at the moment of breaking the melting bridge. The second step is as follows: the cathode emits electrons under the action of a strong electric field, the electrons moving at high speed impact the anode, the anode is gasified to form metal steam, the electrons collide with the metal steam to ionize an anode current, the anode current moves to the cathode at high speed to bombard the surface of the cathode, the cathode is gasified to form the metal steam, at the moment, the charged mass point between the gaps is increased sharply, the gaps are punctured, and electric arcs are formed.
S5: the position and the temperature of the annular current collector and the distribution of airflow fields at two ends of the annular current collector are monitored in real time through a monitoring device, and the annular current collector is regulated and controlled through an external field regulating and controlling device;
if the temperature is about to reach the softening temperature K of the material of the annular current collector, the control device feeds back to the excitation exciter to increase the excitation current, the arc motion is accelerated by increasing the transverse magnetic field, and the position and the distribution change of the external gas flow field regulate and control the internal gas flow field of the annular current collector through the current stabilizer.
In the embodiment, due to the good conductivity of the arc plasma, the operability of an external magnetic field on the arc plasma is provided, charged particles in the plasma are accelerated by electrostatic force in the electrostatic field, the plasma is composed of a large number of electrons and positive ions, and the electrons and the positive ions of the plasma move in a disordered way, so that the arc can do regular reciprocating motion between the electrodes, the whole arc can be subjected to Lorentz force vertical to an arc column under the action of an external transverse magnetic field and then rotates, the purpose of current-carrying energy transfer of the arc is achieved, and the arc ablation is greatly reduced.
According to the knowledge of electromagnetism, charged particles in the conductive fluid can be acted by Lorentz force under the action of the magnetic field, the magnitude and the direction of the acting force are related to the magnitude and the direction of the speed of the charged particles entering the magnetic field and the magnitude of the stress intensity of the magnetic field, and the Lorentz force
The expression is as follows:
wherein q is the charge of the particles,
as to the speed of the movement of the electric charge,
the magnetic induction intensity of the position of the electric charge;
or analyzing the Lorentz force expression from the current perspective as:
wherein L is the arc length
In order to be the magnitude of the arc current,
is the magnetic induction at the location of the charge.
However, the whole arc is equivalent to the conductive fluid, and when the transverse magnetic field is applied, the direction of the lorentz force is determined by the left-hand rule, and the situation that the arc is continuously arcing is obtained, as shown in fig. 4, the conductive fluid is in the inward magnetic field B perpendicular to the paper surface, and the arc current is I1When the arc is rotated, the arc is rotated around the contact line under the action of the left-hand Lorentz force. Therefore, by arranging the excitation exciters on the front surface and the side surface of the annular current collector, the arc motion is controlled by the mutual matching of the excitation exciters.
S6: judging whether the electric arc is accidentally extinguished through an electric signal monitor, if so, reigniting the electric arc through a full-automatic arc-burning device, and entering a step S7, otherwise, directly entering the step S7;
when the current signal monitored by the electric signal monitor is 0, the output is 'accidentally extinguished'.
S7: if an arc quenching command is received, controlling the pantograph lifting mechanical arm to descend by the control device so that the annular current collector is completely contacted with the contact line for arc quenching;
s8: and detecting whether the arc is completely extinguished through an electric signal monitor and a temperature sensor, if so, ending the operation, and otherwise, repeating the step S7 to extinguish the arc.
The specific method for detecting whether the arc is completely extinguished through the electric signal monitor and the temperature sensor comprises the following steps: judging through voltage amplitude fluctuation, contact resistance and real-time temperature of the electric signals, and transmitting the electric signals to a control device;
if the voltage amplitude fluctuation in the electric signal is less than 5% of the average voltage value;
the ratio of the voltage to the current in the electric signal is less than 0.5, namely the contact resistance is less than 0.5 omega;
and the real-time temperature is lower than 2000 degrees;
if the three items are met, outputting complete arc quenching, otherwise, outputting incomplete arc quenching.
The invention firstly changes the traditional direct contact current receiving mode, solves the problems of current receiving limitation, large mechanical impact and serious material abrasion of the traditional contact energy transfer, changes the traditional direct contact energy transfer into the rotary arc annular current receiving mode on the basis of novel non-contact current receiving, and secondly avoids the instability of the novel non-contact arc current receiving to a certain extent through the annular current receiving system of the excitation exciter, and also solves the problem of rapid service performance reduction of the current receiving system caused by material ablation due to overlarge arc energy injection.
Claims (9)
1. A non-contact annular current-receiving train control system is characterized by comprising a control device, and an annular current receiving device, a monitoring device, an electric arc inspection device and an external field regulating and controlling device which are all in communication connection with the control device, the control device is positioned inside the non-contact train (4), the annular current collector comprises a lifting bow mechanical arm (1) and an annular current collector (2) which are fixedly connected, the lifting bow mechanical arm (1) is in communication connection with a control device, the lifting bow mechanical arm (1) is arranged at the top end of a non-contact train (4), the annular current collector (2) is electrically connected with the contact wire (3) through a rotating electric arc, the external field regulating and controlling device is electrically connected with the annular current collector (2), and the monitoring device and the electric arc inspection device are both arranged at the joint of the annular current collector (2) and the contact wire (3);
the control method of the non-contact annular current-receiving train specifically comprises the following steps:
a1: the annular current collector is opened firstly, the mechanical arm is controlled by the control device to slowly lift the bow, then the annular current collector is controlled to be closed, the contact wire is arranged in the annular current collector, and the contact wire is contacted with the upper surface in the annular current collector;
a2: monitoring whether the annular current collector is in good contact with the contact wire or not through an electric signal monitor, if so, entering the step A3, otherwise, returning to the step A1;
a3: judging the position relation between the annular current collector and the contact wire through a distance sensor, and controlling a pantograph lifting mechanical arm to slowly lift a pantograph according to the position relation through a control device, so that the contact wire is positioned at the center of the annular current collector and an electric arc is generated;
a4: a transverse magnetic field is generated in the advancing direction and the side of the train by an excitation exciter, so that the electric arc does circular motion by taking the contact line as the center and the annular current collector as the radius and moves forwards along the contact line;
a5: the position and the temperature of the annular current collector and the distribution of airflow fields at two ends of the annular current collector are monitored in real time through a monitoring device, and the annular current collector is regulated and controlled through an external field regulating and controlling device;
a6: judging whether the electric arc is accidentally extinguished through an electric signal monitor, if so, reigniting the electric arc through a full-automatic arc-burning device, and entering the step A7, otherwise, directly entering the step A7;
a7: if an arc quenching command is received, controlling the pantograph lifting mechanical arm to descend by the control device so that the annular current collector is completely contacted with the contact line for arc quenching;
a8: and detecting whether the arc is completely extinguished through an electric signal monitor and a temperature sensor, if so, ending the operation, otherwise, repeating the step A7 to extinguish the arc.
2. The train control system of claim 1, wherein the annular current collector (2) is provided with an emergency arc striking device at an arc interval with the contact wire (3).
3. The system according to claim 2, wherein the emergency starting device is a fully automatic arc burner.
4. The train control system of claim 1, wherein the monitoring device comprises a distance sensor, two wind meters and at least four temperature sensors, the distance sensor, the two wind meters and the at least four temperature sensors are all in communication connection with the control device, the distance sensor is arranged inside the annular current collector (2), the two wind meters are respectively arranged in front of and behind the annular current collector (2), and the four temperature sensors are all arranged on the inner surface of the annular current collector (2).
5. The system according to claim 1, wherein the arc testing device comprises an electrical signal monitor in communication connection with the control device, the electrical signal monitor is arranged on the top of the non-contact train (4) and monitors the electrical signal between the annular current collector (2) and the contact wire (3).
6. The non-contact annular current-receiving train control system according to claim 1, wherein the external field regulation and control device comprises two excitation exciters and two current regulators which are both in communication connection with the control device, the two excitation exciters are respectively arranged at the lower front and the side of the annular current receiver (2), and the two current regulators are respectively arranged at the front end and the rear end of the annular current receiver (2).
7. The non-contact annular current collector train control system according to claim 1, wherein the annular current collector (2) is made of a high-conductivity and high-temperature-resistant material.
8. A non-contact annular current-receiving train control method is characterized by comprising the following steps:
s1: the annular current collector is opened firstly, the mechanical arm is controlled by the control device to slowly lift the bow, then the annular current collector is controlled to be closed, the contact wire is arranged in the annular current collector, and the contact wire is contacted with the upper surface in the annular current collector;
s2: monitoring whether the annular current collector is in good contact with the contact wire or not through an electric signal monitor, if so, entering a step S3, otherwise, returning to the step S1;
s3: judging the position relation between the annular current collector and the contact wire through a distance sensor, and controlling a pantograph lifting mechanical arm to slowly lift a pantograph according to the position relation through a control device, so that the contact wire is positioned at the center of the annular current collector and an electric arc is generated;
s4: a transverse magnetic field is generated in the advancing direction and the side of the train by an excitation exciter, so that the electric arc does circular motion by taking the contact line as the center and the annular current collector as the radius and moves forwards along the contact line;
s5: the position and the temperature of the annular current collector and the distribution of airflow fields at two ends of the annular current collector are monitored in real time through a monitoring device, and the annular current collector is regulated and controlled through an external field regulating and controlling device;
s6: judging whether the electric arc is accidentally extinguished through an electric signal monitor, if so, reigniting the electric arc through a full-automatic arc-burning device, and entering a step S7, otherwise, directly entering the step S7;
s7: if an arc quenching command is received, controlling the pantograph lifting mechanical arm to descend by the control device so that the annular current collector is completely contacted with the contact line for arc quenching;
s8: and detecting whether the arc is completely extinguished through an electric signal monitor and a temperature sensor, if so, ending the operation, and otherwise, repeating the step S7 to extinguish the arc.
9. The method for controlling a contactless circular current-receiving train according to claim 8, wherein in step S8, the specific method for detecting whether the arc is completely extinguished through the electric signal monitor and the temperature sensor includes: judging through voltage amplitude fluctuation, contact resistance and real-time temperature of the electric signals, and transmitting the electric signals to a control device;
if the voltage amplitude fluctuation in the electric signal is less than 5% of the average voltage value;
the ratio of the voltage to the current in the electric signal is less than 0.5, namely the contact resistance is less than 0.5 omega;
and the real-time temperature is lower than 2000 degrees;
if the three items are met, outputting complete arc quenching, otherwise, outputting incomplete arc quenching.
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| CN117863888B (en) * | 2024-03-12 | 2024-05-07 | 西南交通大学 | Pantograph device and regulation and control method thereof |
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| JPH0911779A (en) * | 1995-06-30 | 1997-01-14 | Toyota Autom Loom Works Ltd | Noncontact feeder system |
| US8519570B2 (en) * | 2008-07-04 | 2013-08-27 | Murata Machinery, Ltd. | Traveling vehicle system |
| CN105445576A (en) * | 2015-11-11 | 2016-03-30 | 西南交通大学 | Pantograph arc energy measurement method |
| CN109484189B (en) * | 2018-12-27 | 2020-10-09 | 西南交通大学 | Non-contact train operation system and operation method thereof |
| CN109693015B (en) * | 2018-12-28 | 2019-12-03 | 西南交通大学 | A kind of method and device of the magnetic field regulation arc erosion based on radio energy-transmitting |
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