CN111605441A - Automatic neutral section passing control method and device - Google Patents
Automatic neutral section passing control method and device Download PDFInfo
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- CN111605441A CN111605441A CN202010343328.9A CN202010343328A CN111605441A CN 111605441 A CN111605441 A CN 111605441A CN 202010343328 A CN202010343328 A CN 202010343328A CN 111605441 A CN111605441 A CN 111605441A
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- 238000005191 phase separation Methods 0.000 claims description 53
- 238000001514 detection method Methods 0.000 claims description 12
- 238000011217 control strategy Methods 0.000 claims description 6
- 230000003213 activating effect Effects 0.000 claims description 4
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- 238000006243 chemical reaction Methods 0.000 claims description 4
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M3/00—Feeding power to supply lines in contact with collector on vehicles; Arrangements for consuming regenerative power
- B60M3/04—Arrangements for cutting in and out of individual track sections
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L23/00—Control, warning or like safety means along the route or between vehicles or trains
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- Train Traffic Observation, Control, And Security (AREA)
Abstract
The invention relates to an automatic neutral section passing control method and a device, wherein the control method comprises the following steps: s1, collecting the network voltage signal by the vehicle, and transmitting the network voltage signal to the passing neutral section device; s2, when the neutral section passing device detects that the network voltage signal changes from network voltage to no network voltage, the neutral section passing device recognizes the network voltage signal as a forced disconnection signal and executes the operation of disconnecting the power supply circuit breaker; and S3, when the neutral section passing device detects that the network voltage signal changes from no network voltage to network voltage, the neutral section passing device recognizes the network voltage signal as a forced closing signal and executes the operation of closing the power supply circuit breaker. The invention ensures that the positioning of the split-phase area is more accurate and reliable, can effectively solve the problem that the VCB disconnection fault of the vehicle is caused by outputting the split-phase passing command when the vehicle passes through the split phase at low speed, ensures that the VCB can be normally closed and disconnected by the train passing through the split phase at any initial speed, and ensures the operation safety and the operation efficiency of the train.
Description
Technical Field
The invention belongs to the technical field of train passing neutral section, and particularly relates to an automatic train passing neutral section control method and device.
Background
Currently, in order to reduce the influence of unbalanced load on the national grid, the phase of the overhead line system needs to be changed every certain distance. To avoid short circuits, it is necessary to create phase separation zones between the supply sections of different mains voltage phases. Correspondingly, when the train enters and leaves the phase splitting area, the corresponding phase splitting area entering signal and phase splitting area exiting signal are required to be sent to the automatic phase splitting passing device of the train, so that the corresponding processing is adopted, and the phase splitting passing control of the train is realized.
The existing vehicle is generally provided with two automatic passing neutral section devices, the two automatic passing neutral section devices work after the vehicle is electrified, a vehicle network system judges and signs an instruction sent by one passing neutral section device through control logic to carry out vehicle logic control, although only one passing neutral section device is signed, the two automatic passing neutral section devices work, and long-time electrification affects the service life of equipment. Therefore, the current working mode can not meet the higher requirements of prolonging the overhaul and repair processes of the vehicle, reducing the maintenance cost of the vehicle and improving the service efficiency of the vehicle.
As shown in fig. 1, in the existing vehicle, a magnet is buried in each of the left and right sides of a line at 60M positions at two ends of a phase separation area, a vehicle-mounted signal receiver is disposed on each of the left and right sides of a rail at a head portion of the vehicle, and when the vehicle enters and exits the phase separation area, the vehicle-mounted signal receivers receive four ground magnetic steel signals, namely, a first ground signal G1 (which is recognized as a "notice" signal by an auto-phase separation device) and a second ground signal G2 (which is recognized as a "forced off" signal by the auto-phase separation device) before entering the phase separation area, and a third ground signal G3 (which is recognized as a "notice" signal by the auto-phase separation device) and a fourth ground signal G4 (which is recognized as a "forced on" signal by the auto-phase separation device) after exiting the phase separation area. When the automatic neutral-section passing device recognizes the forced disconnection signal, the automatic neutral-section passing device sends the signal to the train control system to execute the operation of disconnecting the VCB, and when the automatic neutral-section passing device recognizes the forced combination signal, the automatic neutral-section passing device sends the signal to the train control system to execute the operation of connecting the VCB.
When the vehicle-mounted signal receiver enters a phase separation area, the vehicle-mounted signal receiver receives a first ground signal G1, the vehicle-mounted signal receiver sends the first ground signal G1 to the train automatic passing phase separation device, the automatic passing phase separation device recognizes as a 'notice break' signal, after the 'notice break' signal is received, the automatic passing phase separation device waits for t seconds, if a forcing signal is collected within the t seconds, the automatic passing phase separation device recognizes as a 'forcing combination' signal, and otherwise, the automatic passing phase separation device is automatically and initially set. The automatic initial setting function of the automatic passing phase splitting device is used for eliminating the interference of an external abnormal magnetic field to a passing phase splitting action sequence, and the automatic passing phase splitting device is in a phase splitting state to be about to pass by default after initial setting.
The existing passing neutral section control is designed to carry out self-checking of an automatic passing neutral section device through a fixed delay time t seconds, but the initial speed of a vehicle entering the passing neutral section needs to be controlled manually, the initial speed of the vehicle entering the neutral section is low, or braking is applied in the neutral section, so that the motor train unit stays too long in the range of ground magnetic steel, the time exceeds the self-checking time t set by the automatic passing neutral section device, after the time t seconds of the self-checking, a fourth ground signal G4 is received, the automatic passing neutral section device of the train can mistake the acquired forced signal as entering the neutral section, the passing neutral section device outputs a VCB (voltage control) command, the vehicle is free of network voltage after the neutral section is obtained, the operation efficiency is influenced, and the existing automatic passing neutral section device cannot meet the condition that any initial speed can normally close and break a VCB (power supply circuit breaker) after passing the.
Disclosure of Invention
The invention mainly solves the technical problem of providing an automatic passing neutral section control method which can normally break and close a VCB (virtual vehicle bus) at any initial speed by passing through neutral sections and ensure the operation safety and the operation efficiency of a train, and also provides an automatic passing neutral section device.
In order to achieve the purpose, the technical scheme of the invention is as follows:
an automatic neutral-section passing control method comprises the following steps:
s1, collecting the network voltage signal by the vehicle, and transmitting the network voltage signal to the passing neutral section device;
s2, when the neutral section passing device detects that the network voltage signal changes from network voltage to no network voltage, the neutral section passing device recognizes the network voltage signal as a forced disconnection signal and executes the operation of disconnecting the power supply circuit breaker;
and S3, when the neutral section passing device detects that the network voltage signal changes from no network voltage to network voltage, the neutral section passing device recognizes the network voltage signal as a forced closing signal and executes the operation of closing the power supply circuit breaker.
Further, in the step S2, when the vehicle enters the phase separation area, the phase separation device responds to the ground signal preferentially, and does not respond to the grid voltage signal any more after receiving the ground signal forced to be disconnected, and the phase separation device responds to the grid voltage signal when not receiving the ground signal forced to be disconnected and executes the step S2.
Further, in step S3, when the vehicle is out of the phase separation region, the phase separation device preferentially responds to the grid voltage signal, and if a change in the grid voltage signal is detected, the vehicle does not respond to the ground signal received subsequently.
Further, the method also comprises the step of selecting one of the passing phase separation devices to work before entering the phase separation area.
Further, the step of selecting the passing neutral section comprises detecting a pantograph-ascending signal, the corresponding passing neutral section is activated to enter an operating state, and the other passing neutral section is in a standby state.
The other technical scheme of the invention is as follows:
an automatic passing neutral section apparatus comprising:
the first receiving module is connected with a vehicle-mounted signal receiver for collecting ground signals and used for receiving the ground signals sensed and sent by the vehicle-mounted signal receiver;
the second receiving module is connected with the network voltage detection device and used for receiving network voltage signals in real time;
the processing module is used for judging and processing the received ground signal and the network voltage signal according to a pre-stored control strategy, identifying a forced break when the signals enter a phase splitting area and a forced combined signal when the signals exit the phase splitting area, and sending results to the output module;
and the output module is used for sending the processing result to the train control system so as to execute the operation of connecting or disconnecting the VCB.
Further, the control strategy includes:
when the vehicle enters the phase splitting area, the processing module preferentially responds to the ground signal, does not respond to the network voltage signal sent by the second receiving module after confirming that the ground signal sent by the first receiving module is received, and recognizes the network voltage signal as a forced disconnection signal when the network voltage signal is detected to be changed from network voltage to no network voltage when the ground signal is not received;
when the vehicle is out of the phase separation region, the processing module responds to the network voltage signal preferentially, and when the processing module detects that the network voltage signal sent by the second receiving module changes from no network voltage to network voltage, the processing module recognizes the network voltage signal as a forced combination signal and does not respond to the subsequent received ground signal any more.
And the detection module is used for detecting a pantograph rising signal and activating the corresponding phase separation control device to enter a working state after detecting the pantograph rising signal.
Furthermore, the network voltage detection device is connected with the voltage transformer, and network voltage signals are obtained through voltage-frequency conversion processing and transmitted to the second receiving module in real time.
In summary, compared with the prior art, the automatic neutral-section passing control method and the automatic neutral-section passing control device provided by the invention have the following advantages:
(1) the invention increases the network pressure signal in the automatic passing neutral section control logic, so that the positioning of the neutral section area is more accurate and reliable, the problem that the VCB of the vehicle is disconnected due to the output of the passing neutral section instruction when the vehicle is in a low-speed passing neutral section can be effectively solved, the train can meet the condition that the VCB can be normally closed and disconnected by passing the neutral section at any initial speed, and the operation safety and the operation efficiency of the train are ensured.
(2) The invention enables the vehicle to be powered on by only one automatic passing phase separation device at the same time through the control signal, prolongs the service life of the passing phase separation device and solves the problem of network misjudgment at the same time.
Drawings
FIG. 1 is a schematic diagram of an automatic passing phase separation of a conventional vehicle;
FIG. 2 is a schematic diagram of the present invention for auto-passing phase separation.
Detailed Description
The invention is described in further detail below with reference to the following detailed description and accompanying drawings:
as shown in fig. 2, the automatic neutral-section passing control method provided in this embodiment specifically includes the following steps:
s1, collecting a network voltage signal by the vehicle, and transmitting the network voltage signal to the mobile phase-splitting device;
s2, when the neutral section passing device detects that the network voltage signal changes from network voltage to no network voltage, the neutral section passing device recognizes the network voltage signal as a forced disconnection signal and executes the operation of disconnecting the power supply circuit breaker;
and S3, when the neutral section passing device detects that the network voltage signal changes from no network voltage to network voltage, the neutral section passing device recognizes the network voltage signal as a forced closing signal and executes the operation of closing the power supply circuit breaker.
In step S1, the network voltage detection device on the vehicle detects the network voltage of the catenary in real time, and transmits a network voltage signal to the phase-splitting device in real time. The network voltage detection device is connected with the voltage transformer, and network voltage signals are obtained through voltage-frequency conversion processing and transmitted to the passing phase splitting device.
In the above step S2, when the vehicle enters the phase separation region, the phase separation device is in the initial setting state (i.e., the phase separation passing state is about to be obtained by default). In the process, the phase passing device responds to the magnetic steel signal of the ground preferentially, the vehicle-mounted signal receiver firstly senses a first ground signal G1 and sends the first ground signal G1 to the phase passing device, the phase passing device identifies the ground signal G1 as a signal for warning to be disconnected, the vehicle-mounted signal receiver receives a second ground signal G2 and sends the second ground signal G2 to the phase passing device in the process of continuing advancing, the phase passing device identifies the ground signal G2 as a signal for forced disconnection, after the ground signal for forced disconnection is identified, the VCB is disconnected, and at the moment, the phase passing device does not respond to the network voltage signal any more.
When a fault occurs, if the vehicle-mounted signal receiver fails to sense a ground signal or the passing phase separation device does not receive the ground signal sent by the vehicle-mounted signal receiver, the passing phase separation device responds to the network voltage signal, and when the passing phase separation device detects that the network voltage signal changes from network voltage to no network voltage, the network voltage signal is identified as a forced-off signal, and the operation of disconnecting the power supply circuit breaker is executed. And the network voltage signal is identified as the last defense line entering the phase separation area, so that the vehicle is ensured to pass through the phase separation area when the power is cut off.
In the above step S3, when the vehicle exits the phase separation region, the phase separation device responds to the grid voltage signal preferentially, and when the phase separation device detects that the grid voltage signal changes from no grid voltage to grid voltage, it recognizes as a "forced on" signal, and performs an operation of engaging the power breaker, at this time, the subsequent third ground signal G3 and the subsequent fourth ground signal G4 are not responded, and the subsequent third ground signal G3 and the subsequent fourth ground signal G4 are both alternative signals.
In this embodiment, before entering the phase separation region, the method further comprises the step of selecting one of the passing phase separation devices to work. Further, the step of selecting the passing neutral section includes detecting a pantograph-raising signal, activating a passing neutral section installed in correspondence with the pantograph to enter an operating state, and putting another passing neutral section in a standby state. The neutral-section passing device is activated in two modes, one mode is that the neutral-section passing device is automatically activated according to the detected pantograph-ascending signal, and the other mode can also be that a driver manually controls the corresponding neutral-section passing device to enter the working state according to the detected pantograph-ascending signal. In the normal running process of the vehicle, only one automatic phase passing device of the vehicle is electrified to enter a working state, which means that half of the working time of each phase passing device is reduced, so that the service life of the phase passing device is prolonged, and the problem of misjudgment of a vehicle network system caused by the simultaneous working of two phase passing devices in the prior art is solved.
The embodiment also provides an automatic phase-splitting control device which comprises a first receiving module, a second receiving module, a processing module, an output module and a detection module.
The first receiving module is connected with a vehicle-mounted signal receiver for collecting ground signals and used for receiving the ground signals sensed and sent by the vehicle-mounted signal receiver.
And the second receiving module is connected with the detection device for collecting the network voltage and is used for receiving network voltage signals in real time, and the network voltage detection device is connected with the voltage transformer, obtains the network voltage signals through voltage-frequency conversion processing and transmits the network voltage signals to the passing phase splitting device in real time.
And the processing module is used for judging and processing the received ground signal and the network voltage signal according to a pre-stored control strategy, identifying a forced break when the signals enter a phase splitting area and a forced combined signal when the signals exit the phase splitting area, and sending the result to the output module. The control strategy is as described above and will not be described again here.
And the output module is used for sending the processing result to the train control system so as to execute the operation of connecting or disconnecting the VCB.
And the detection module is used for detecting the pantograph rising signal and activating the phase separation device to enter a working state after detecting the pantograph rising signal. Ensuring that only one passing neutral section device is activated to work and the other passing neutral section device is in a standby state.
The invention adds a step of responding to the network voltage signal in the control logic of the automatic passing phase separation, preferably responds to the ground signal when entering the phase separation area, responds to the network voltage signal when the ground signal has a fault, and the network voltage signal is used as a last defense line to ensure that the vehicle does not have electricity to pass through the phase separation area. When the vehicle is out of the split-phase area, the network voltage signal is preferably responded, the vehicle can be ensured to be powered when the vehicle is out of the split-phase area, the speed of the vehicle entering and exiting the split-phase area is irrelevant, the VCB can be connected as long as the change from the non-network voltage to the network voltage is detected, the limit of the initial setting function and the self-checking time t seconds in the prior art is avoided, meanwhile, the ground signal of the last split-phase area is not identified as a forced signal, the problem that the VCB of the vehicle is disconnected due to the fact that the split-phase instruction is output when the vehicle is in the low-speed split-phase area is effectively solved, the position of the split-phase area is more accurately positioned, the train can meet the condition that the VCB can be normally connected and disconnected through the split-phase area at any initial speed, the.
Similar solutions can be derived from the solution given in the figures, as described above. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the technical solution of the present invention, unless the content is the technical solution of the present invention.
Claims (9)
1. An automatic neutral-section passing control method is characterized by comprising the following steps:
s1, collecting the network voltage signal by the vehicle, and transmitting the network voltage signal to the passing neutral section device;
s2, when the neutral section passing device detects that the network voltage signal changes from network voltage to no network voltage, the neutral section passing device recognizes the network voltage signal as a forced disconnection signal and executes the operation of disconnecting the power supply circuit breaker;
and S3, when the neutral section passing device detects that the network voltage signal changes from no network voltage to network voltage, the neutral section passing device recognizes the network voltage signal as a forced closing signal and executes the operation of closing the power supply circuit breaker.
2. An automatic excessive phase control method according to claim 1, characterized in that: in the step S2, when the vehicle enters the phase separation area, the phase separation device responds to the ground signal preferentially, and does not respond to the grid voltage signal after receiving the ground signal forced to be disconnected, and the phase separation device responds to the grid voltage signal when not receiving the ground signal forced to be disconnected and executes the step S2.
3. An automatic excessive phase control method according to claim 1, characterized in that: in step S3, when the vehicle is out of the phase separation region, the phase separation device preferentially responds to the grid voltage signal, and if a change in the grid voltage signal is detected, the vehicle does not respond to the ground signal received subsequently.
4. An automatic excessive phase control method according to claim 1, characterized in that: the method also comprises the step of selecting one of the passing phase separation devices to work before entering the phase separation area.
5. An automatic excessive phase control method according to claim 4, characterized in that: the step of selecting the neutral section passing device comprises the steps of detecting a pantograph-ascending signal, enabling the corresponding neutral section passing device to enter an operating state, and enabling the other neutral section passing device to be in a standby state.
6. An automatic passing phase control apparatus, comprising:
the first receiving module is connected with a vehicle-mounted signal receiver for collecting ground signals and used for receiving the ground signals sensed and sent by the vehicle-mounted signal receiver;
the second receiving module is connected with the network voltage detection device and used for receiving network voltage signals in real time;
the processing module is used for judging and processing the received ground signal and the network voltage signal according to a pre-stored control strategy, identifying a forced break when the signals enter a phase splitting area and a forced combined signal when the signals exit the phase splitting area, and sending results to the output module;
and the output module is used for sending the processing result to the train control system so as to execute the operation of connecting or disconnecting the VCB.
7. An automatic passing phase control device according to claim 6, characterized in that: the control strategy comprises the following steps:
when the vehicle enters the phase splitting area, the processing module preferentially responds to the ground signal, does not respond to the network voltage signal sent by the second receiving module after confirming that the ground signal sent by the first receiving module is received, and recognizes the network voltage signal as a forced disconnection signal when the network voltage signal is detected to be changed from network voltage to no network voltage when the ground signal is not received;
when the vehicle is out of the phase separation region, the processing module responds to the network voltage signal preferentially, and when the processing module detects that the network voltage signal sent by the second receiving module changes from no network voltage to network voltage, the processing module recognizes the network voltage signal as a forced combination signal and does not respond to the subsequent received ground signal any more.
8. An automatic passing phase control device according to claim 6, characterized in that: the device also comprises a detection module used for detecting the pantograph lifting signal and activating the corresponding neutral section passing control device to enter a working state after detecting the pantograph lifting signal.
9. An automatic passing phase control device according to claim 6, characterized in that: the network voltage detection device is connected with the voltage transformer, and network voltage signals are obtained through voltage-frequency conversion processing and transmitted to the second receiving module in real time.
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| CN202010343328.9A CN111605441B (en) | 2020-04-27 | 2020-04-27 | Automatic neutral section passing control method and device |
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| CN202010343328.9A CN111605441B (en) | 2020-04-27 | 2020-04-27 | Automatic neutral section passing control method and device |
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| CN114619926A (en) * | 2022-04-01 | 2022-06-14 | 中南大学 | Automatic neutral-section passing control method for heavy-duty locomotive, rail transit vehicle and device |
| CN114734886A (en) * | 2022-01-25 | 2022-07-12 | 长沙南睿轨道交通电气设备有限公司 | Heavy-duty train and automatic passing neutral section method and device thereof |
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