CN109703368B - Redundancy control method and system for locomotive high-voltage system - Google Patents
Redundancy control method and system for locomotive high-voltage system Download PDFInfo
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- CN109703368B CN109703368B CN201811502618.2A CN201811502618A CN109703368B CN 109703368 B CN109703368 B CN 109703368B CN 201811502618 A CN201811502618 A CN 201811502618A CN 109703368 B CN109703368 B CN 109703368B
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- pantograph
- circuit breaker
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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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
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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
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Abstract
The embodiment of the invention provides a redundancy control method and a redundancy control system for a locomotive high-voltage system, wherein the method comprises the following steps: acquiring fault information of a pantograph and/or fault information of a vacuum main circuit breaker; according to the fault information of the pantograph and/or the fault information of the vacuum main circuit breaker, the high-voltage conversion contactor is subjected to conversion operation, so that the pantograph and/or the vacuum main circuit breaker which do not have faults are put into operation to form a high-voltage current path together with the transformer, and the problem that when the vacuum main circuit breaker has faults, the high-voltage current path cannot be formed and the locomotive is broken due to the fact that only one vacuum main circuit breaker is arranged on each locomotive is solved. If the fault information of the pantograph is acquired, switching operation is carried out on the network voltage conversion relay according to the fault information of the pantograph, so that the normally working pantograph, the voltage transformer and the network voltage conversion relay form a current path by closing contacts on one side of the non-faulted pantograph, and the network voltage information can be normally acquired.
Description
Technical Field
The invention relates to a control method of a locomotive high-voltage system, in particular to a redundancy control method and a redundancy control system of the locomotive high-voltage system.
Background
The locomotive high-voltage system is mainly used for connecting the high-voltage electricity of the pantograph net into a locomotive main circuit system to provide power for the locomotive, and simultaneously feeding back the high-voltage electricity generated by the locomotive main circuit system under the electric working condition to the pantograph net to form the cyclic utilization of the high-voltage electricity. The locomotive high-voltage system mainly comprises a pantograph, a vacuum main circuit breaker, a high-voltage isolating switch, a high-voltage transformer and the like.
In the prior art, each locomotive has two pantographs, which are respectively installed at the front end and the rear end of the roof of the locomotive. Each locomotive has a vacuum main circuit breaker. When a pantograph mounted at the front end or the rear end of the locomotive roof is lifted and a vacuum main circuit breaker is closed, the pantograph net and a locomotive main circuit are connected to form a high-voltage current path. The high-voltage transformer can receive a network voltage signal of the pantograph network through the pantograph. Each locomotive has two high voltage isolator, and each high voltage isolator corresponds a pantograph respectively, and when high voltage isolator was in isolated position, then the corresponding pantograph can't rise. Two pantographs share one vacuum main circuit breaker, and any pantograph can realize a high-voltage current path together with the vacuum main circuit breaker when being lifted. The two pantographs implement redundancy of the locomotive high voltage system.
However, in the prior art, each locomotive has only one vacuum main breaker, and when the vacuum main breaker fails, a high-voltage current path cannot be formed, so that the locomotive is broken.
Disclosure of Invention
The embodiment of the invention provides a redundancy control method and a redundancy control system for a locomotive high-voltage system, which solve the problem that in the prior art, each locomotive has only one vacuum main circuit breaker, and when the vacuum main circuit breaker fails, a high-voltage current path cannot be formed, so that the locomotive is broken.
In a first aspect, the present embodiment of a method for controlling redundancy of a high voltage system of a locomotive is applied to a high voltage redundancy circuit of the locomotive, where the high voltage redundancy circuit of the locomotive includes: the high-voltage conversion contactor is respectively connected with the first pantograph, the second pantograph, the first vacuum main circuit breaker and the second vacuum main circuit breaker, the high-voltage conversion contactor is also respectively connected with the first high-voltage transformer and the second high-voltage transformer, the transformer is respectively connected with the first vacuum main circuit breaker and the second vacuum main circuit breaker, and the first high-voltage transformer and the second high-voltage transformer are also connected with the network voltage conversion relay; the method comprises the following steps:
acquiring fault information of a pantograph and/or fault information of a vacuum main circuit breaker, wherein the fault information of the pantograph is used for indicating a faulted pantograph, and the fault information of the vacuum main circuit breaker is used for indicating the faulted vacuum main circuit breaker;
according to the fault information of the pantograph and/or the fault information of the vacuum main circuit breaker, the high-voltage conversion contactor is subjected to conversion operation under the condition that a first preset condition is met;
and if the fault information of the pantograph is acquired, switching operation is carried out on the network voltage conversion relay under the condition of meeting a second preset condition according to the fault information of the pantograph.
In one possible design, the obtaining pantograph fault information includes:
after a pantograph relay is electrified, judging whether a pantograph rises within a first preset time length or not, if not, determining that the pantograph rises and fails, and acquiring pantograph failure information when the frequency of pantograph rising and failure is greater than a first preset frequency; or
And after the pantograph relay loses power, judging whether the pantograph descending time exceeds a second preset time length, if so, determining that the pantograph descending fault occurs in the pantograph, and acquiring the pantograph fault information. In one possible design, the acquiring the fault information of the vacuum main circuit breaker includes:
after a relay of a main vacuum circuit breaker is electrified, judging whether the time from the opening to the closing of the main vacuum circuit breaker is longer than a third preset time, if so, determining that the main vacuum circuit breaker has a main vacuum circuit breaker closing fault, and when the frequency of the main vacuum circuit breaker closing fault is larger than a second preset frequency, acquiring fault information of the main vacuum circuit breaker; or
After the relay of the vacuum main circuit breaker loses power, whether the time from closing to opening of the vacuum main circuit breaker is longer than the fourth preset time is judged, if yes, the fact that the vacuum main circuit breaker breaks the vacuum main circuit breaker is determined, and the fault information of the vacuum main circuit breaker is obtained.
In one possible design, the high voltage converter contactor includes: the system comprises a first working contactor, a second working contactor and a redundant contactor; the first working contactor is respectively connected with the first pantograph and the first vacuum main circuit breaker, and the second working contactor is respectively connected with the second pantograph and the second vacuum main circuit breaker; and the redundant contactor is respectively connected with the first working contactor and the second working contactor. In one possible design, the modes of the pantograph are divided into a single-pantograph mode and a double-pantograph mode, and the modes of the pantograph can be switched when a third preset condition is met.
In one possible design, if the mode of the pantograph is a single-pantograph mode;
the single-pantograph mode is divided into a front pantograph mode, a rear pantograph mode and an automatic mode, and respectively corresponds to the first pantograph, the second pantograph and the pantograph far away from the main control end.
In the front bow mode, the first pantograph is raised. And if the first pantograph fails, manually switching to the second pantograph to lift according to the failure information of the first pantograph.
In the rear-bow mode, the second pantograph is raised. And if the second pantograph fails, manually switching to the first pantograph to lift according to the failure information of the second pantograph.
In the automatic mode, the pantograph is raised away from the master control end. If the pantograph far away from the main control end fails, the pantograph is automatically switched to be close to the main control end according to the failure information of the pantograph far away from the main control end.
In one possible design, if the mode of the pantograph is a single-pantograph mode;
if pantograph fault information is acquired and is used for indicating that a first pantograph has a fault, the high-voltage conversion contactor is subjected to conversion operation according to the pantograph fault information, and the conversion operation comprises the following steps:
and according to the fault information of the pantograph, the first working contactor and the redundant contactor are controlled to be disconnected, and the second working contactor is controlled to be closed.
If the pantograph fault information is acquired, switching the network voltage conversion relay according to the pantograph fault information, wherein the switching operation comprises the following steps:
and controlling the contact of the network voltage conversion relay to be switched to one side of a second pantograph according to the fault information of the pantograph.
In one possible design, if the mode of the pantograph is a single-pantograph mode;
if obtain pantograph fault information and vacuum main circuit breaker fault information, pantograph fault information is used for instructing first pantograph to break down, vacuum main circuit breaker fault information is used for instructing first vacuum main circuit breaker to break down, then according to pantograph fault information, right high-voltage conversion contactor carries out the conversion operation, includes:
according to the fault information of the pantograph and the fault information of the vacuum main circuit breaker, the first working contactor is controlled to be disconnected and the redundant contactor is controlled to be disconnected, and the second working contactor is controlled to be closed;
if the pantograph fault information is acquired, switching the network voltage conversion relay according to the pantograph fault information, wherein the switching operation comprises the following steps:
and controlling the contact of the network voltage conversion relay to be switched to one side of a second pantograph according to the fault information of the pantograph.
In one possible design, if the mode of the pantograph is a double-pantograph mode;
if the locomotive main control end changes, the locomotive main control end information is used for indicating the direction that the first pantograph is close to the locomotive main control end, then according to the locomotive main control end information, the high-voltage conversion contactor is subjected to conversion operation, and the method comprises the following steps:
controlling the second working contactor to be closed and the redundant contactor to be disconnected with the first working contactor according to the information of the locomotive main control end;
and if the locomotive master control end information is acquired, controlling the contact of the network voltage conversion relay on one side of the second pantograph to be contacted and the contact on one side of the first pantograph to be disconnected according to the locomotive master control end information.
In one possible design, if the mode of the pantograph is a double-pantograph mode;
if acquire vacuum main circuit breaker fault information, vacuum main circuit breaker fault information is used for instructing first vacuum main circuit breaker to break down, then according to vacuum main circuit breaker fault information, right the high voltage conversion contactor carries out the conversion operation, include:
according to the fault information of the vacuum main circuit breaker, the redundant contactor and the first working contactor are controlled to be disconnected, and the second working contactor is controlled to be closed;
if the fault information of the vacuum main breaker is obtained, switching operation is carried out on the network voltage conversion relay according to the fault information of the vacuum main breaker, and the switching operation comprises the following steps:
and controlling the contact of the grid voltage conversion relay on one side of a second pantograph to be contacted and the contact on one side of a first pantograph to be disconnected according to the fault information of the vacuum main circuit breaker. In a second aspect, the present embodiment provides a redundant control system for a high-pressure system of a locomotive, including: control device and locomotive high voltage redundant circuit, locomotive high voltage redundant circuit includes: the high-voltage conversion contactor is respectively connected with the first pantograph, the second pantograph, the first vacuum main circuit breaker and the second vacuum main circuit breaker, the high-voltage conversion contactor is also respectively connected with the first high-voltage transformer and the second high-voltage transformer, the transformer is respectively connected with the first vacuum main circuit breaker and the second vacuum main circuit breaker, and the first high-voltage transformer and the second high-voltage transformer are also connected with the network voltage conversion relay; the control equipment is respectively connected with the high-voltage conversion contactor and the network voltage conversion relay;
the control device is adapted to perform the method according to any of the first aspect.
The embodiment provides a redundancy control method and a redundancy control system for a locomotive high-pressure system, wherein the method comprises the following steps: acquiring fault information of a pantograph and/or fault information of a vacuum main circuit breaker, wherein the fault information of the pantograph is used for indicating a faulted pantograph, and the fault information of the vacuum main circuit breaker is used for indicating a faulted vacuum main circuit breaker; according to the fault information of the pantograph and/or the fault information of the vacuum main circuit breaker, the high-voltage conversion contactor is subjected to conversion operation under the condition that a first preset condition is met, so that the pantograph and/or the vacuum main circuit breaker which do not have faults are put into operation to form a high-voltage current path together with a transformer, and the problem that each locomotive has only one vacuum main circuit breaker, and when the vacuum main circuit breaker has faults, the high-voltage current path cannot be formed to cause the damage of the locomotive is solved. If the fault information of the pantograph is acquired, switching operation is carried out on the network voltage conversion relay according to the fault information of the pantograph under the second preset condition, so that the normally working pantograph, the voltage transformer and the network voltage conversion relay are closed at the contact on the side of the non-faulted pantograph to form a current path, and the network voltage information can be normally acquired.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a block diagram of a locomotive high voltage redundancy circuit provided by an embodiment of the present invention;
FIG. 2 is a first schematic flow chart illustrating a method for controlling redundancy of a high-voltage system of a locomotive according to an embodiment of the present invention;
fig. 3 is a first flowchart illustrating a pantograph fault handling process according to an embodiment of the present invention;
fig. 4 is a second flowchart illustrating a pantograph fault handling process according to an embodiment of the present invention;
fig. 5 is a first flowchart illustrating a fault handling process of a vacuum main breaker according to an embodiment of the present invention;
fig. 6 is a second schematic flowchart of a fault processing process of the vacuum main circuit breaker according to an embodiment of the present invention;
fig. 7 is a schematic flow chart of a conversion process of the high voltage conversion contactor according to the embodiment of the present invention;
FIG. 8 is a second schematic flow chart illustrating a method for controlling redundancy of a high-voltage system of a locomotive according to an embodiment of the present invention;
FIG. 9 is a third schematic flowchart of a method for controlling redundancy of a high-voltage system of a locomotive according to an embodiment of the present invention;
FIG. 10 is a schematic diagram of a redundant control system for a high voltage system of a locomotive according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a structural diagram of a locomotive high-voltage redundancy circuit according to an embodiment of the present invention, and as shown in fig. 1, the locomotive high-voltage redundancy circuit according to the embodiment of the present invention includes: the pantograph type high-voltage power distribution system comprises a first pantograph 101, a second pantograph 102, a high-voltage conversion contactor 103, a first vacuum main breaker 104, a second vacuum main breaker 105, a transformer 106, a first high-voltage transformer 107, a second high-voltage transformer 108 and a network voltage conversion relay 109.
The high-voltage conversion contactor 103 is respectively connected with a first pantograph 101, a second pantograph 102, a first vacuum main breaker 104 and a second vacuum main breaker 105, the high-voltage conversion contactor 103 is also respectively connected with a first high-voltage transformer 107 and a second high-voltage transformer 108, the transformer 106 is respectively connected with the first vacuum main breaker 104 and the second vacuum main breaker 105, and the first high-voltage transformer 107 and the second high-voltage transformer 108 are also connected with a network voltage conversion relay 109.
Optionally, the high voltage converting contactor 103 includes a first working contactor 1031, a second working contactor 1032 and a redundant contactor 1033; the first work contactor 1031 is connected to the first pantograph 101 and the first vacuum main breaker 104, respectively, and the second work contactor 1032 is connected to the second pantograph 102 and the second vacuum main breaker 105, respectively; the redundant contactor 1033 is connected to the first and second working contactors 101 and 1032, respectively.
Optionally, the first pantograph and the second pantograph are respectively located at a head and a tail of the locomotive, and the first pantograph and the second pantograph can contact with a high-voltage power grid on a railway side to transmit power of the power grid to the locomotive.
Optionally, the vacuum main circuit breaker is mainly used for arc extinction, and arc extinction media of the vacuum main circuit breaker and insulating media of a contact gap after arc extinction are high-vacuum media, so that the vacuum main circuit breaker has the advantages of small size, light weight, suitability for frequent operation and no need of maintenance for arc extinction, and is used for controlling and protecting locomotive high-voltage electrical equipment.
Optionally, a voltage transformer is used in conjunction with the transformer to transform the grid voltage. The voltage of the power grid converted by the transformer can be used for transmitting electric energy for the locomotive, and is generally kilovolt-ampere or megavolt-ampere; the voltage of the power grid converted by the voltage transformer can be used for measuring the voltage, power and electric energy of a locomotive traction system line, or used for protecting valuable equipment, motors and transformers in the line when the locomotive traction system line is in fault, and the maximum voltage is generally several volt-amperes, dozens of volt-amperes, and is not more than one thousand volt-amperes.
Optionally, the grid voltage conversion relay may receive grid voltage information of the first pantograph or the second pantograph.
The embodiment of the invention also provides a high-voltage system redundancy control method which is realized on the basis of the locomotive high-voltage redundancy circuit provided by the embodiment of the figure 1. The embodiment of the present invention further provides a method for controlling redundancy of a high voltage system, which is described in detail with reference to fig. 2.
Fig. 2 is a first flowchart illustrating a method for controlling redundancy of a high-voltage system of a locomotive according to an embodiment of the present invention, as shown in fig. 2, the method includes:
s201, pantograph fault information and/or vacuum main circuit breaker fault information are obtained, the pantograph fault information is used for indicating a faulted pantograph, and the vacuum main circuit breaker fault information is used for indicating a faulted vacuum main circuit breaker.
Optionally, the fault information of the pantograph includes pantograph rising fault information of the pantograph and pantograph falling fault information of the pantograph, and the fault information of the vacuum main circuit breaker includes vacuum closing main circuit breaker fault information and vacuum breaking main circuit breaker fault information. The pantograph fault information is used for indicating a faulted pantograph and isolating the faulted pantograph. The vacuum main breaker fault information is used for indicating the failed vacuum main breaker and isolating the failed vacuum main breaker.
S202, according to the fault information of the pantograph and/or the fault information of the vacuum main circuit breaker, the high-voltage conversion contactor is subjected to conversion operation under the condition that a first preset condition is met.
Optionally, the high-voltage conversion contactor may be converted according to actual needs, but the first preset condition, including that the first pantograph and/or the second pantograph is/are in a raised state, and the first working contactor, the second working contactor and the redundant contactor of the high-voltage conversion contactor are not completely isolated, must be satisfied when the high-voltage conversion contactor is converted.
Optionally, the pantograph lifting must meet pantograph lifting conditions, including that the pantograph corresponding to the pantograph mode is normal, the electric key signal is valid, the main circuit is normal, the pantograph gas circuit is conducted, and the pantograph lifting air cylinder pressure is normal.
Optionally, the vacuum main circuit breaker closing must satisfy the vacuum main circuit breaker closing conditions, including that the vacuum main circuit breaker corresponding to the closing branch in the high-voltage conversion contactor is normal, the electric key signal is valid, the main circuit is normal, the vacuum main circuit breaker is in an air path conduction state, the first pantograph and/or the second pantograph is in a lifting state, the network voltage value is normal, the sub-equipment sends permission to close the vacuum main circuit breaker, and the like.
Optionally, after the pantograph fault information and/or the vacuum main circuit breaker fault information are obtained, switching on and off of a first working contactor, a second working contactor and a redundant contactor in the high-voltage conversion contactor are controlled according to the pantograph fault information and/or the vacuum main circuit breaker fault information, so that the high-voltage conversion contactor is switched, the pantograph and/or the vacuum main circuit breaker which do not break down are enabled to work, the normally working pantograph and the vacuum main circuit breaker can form a high-voltage current path with the transformer through switching of the high-voltage conversion contactor, and high-voltage electricity is provided for the whole vehicle.
And S203, if the pantograph fault information is acquired, switching the network voltage conversion relay under the second preset condition according to the pantograph fault information.
Optionally, the grid voltage conversion relay may be switched according to actual needs, but the switching of the grid voltage conversion relay must satisfy a second preset condition, including that the first pantograph and/or the second pantograph is in a raised state.
Optionally, if the pantograph fault information is acquired, according to the pantograph fault information, the contact of the voltage converting relay on the side of the failed pantograph is controlled to be opened, the contact of the voltage converting relay on the side of the non-failed pantograph is closed, so that the high-voltage converting contactor is switched to normally operate the non-failed pantograph, the normally operating pantograph, the voltage transformer and the voltage converting relay on the side of the non-failed pantograph are closed to form a current path, and the network voltage information is normally acquired and includes voltage, frequency and the like.
According to the redundancy control method for the locomotive high-voltage system, fault information of a pantograph and/or fault information of a vacuum main circuit breaker are/is obtained, the fault information of the pantograph is used for indicating a faulted pantograph, and the fault information of the vacuum main circuit breaker is used for indicating a faulted vacuum main circuit breaker; according to the fault information of the pantograph and/or the fault information of the vacuum main circuit breaker, the high-voltage conversion contactor is subjected to conversion operation under the condition that a first preset condition is met, so that the pantograph and/or the vacuum main circuit breaker which do not have faults are put into operation to form a high-voltage current path together with a transformer, and the problem that each locomotive has only one vacuum main circuit breaker, and when the vacuum main circuit breaker has faults, the high-voltage current path cannot be formed to cause the damage of the locomotive is solved. If the fault information of the pantograph is acquired, switching operation is carried out on the network voltage conversion relay according to the fault information of the pantograph under the second preset condition, so that the normally working pantograph, the voltage transformer and the network voltage conversion relay are closed at the contact on the side of the non-faulted pantograph to form a current path, and the network voltage information can be normally acquired.
The following describes, with reference to fig. 3 and fig. 4 in particular, the obtaining of the pantograph fault information in step S201 in the embodiment of fig. 2, where the pantograph fault information is used to indicate a failed pantograph. Fig. 3 is a first flowchart illustrating a pantograph fault handling process according to an embodiment of the present invention, as shown in fig. 3, the process includes:
s301, determining that the pantograph lifting relay is electrified;
s302, judging whether the pantograph is lifted within a first preset time length; if yes, executing S303, otherwise, executing S304;
s303, determining that the pantograph normally rises;
s304, determining that the pantograph has pantograph-lifting fault, and isolating the faulted pantograph;
s305, judging whether the frequency of the pantograph lifting fault is greater than a first preset frequency; if yes, executing S307, otherwise, executing S306;
s306, sending an isolation pantograph recovery command to the failed pantograph, and recovering the failed pantograph;
s307, acquiring fault information of the pantograph;
and S308, isolating the failed pantograph, wherein the isolation cannot be released.
Fig. 4 is a second flowchart illustrating a pantograph fault handling process according to an embodiment of the present invention, as shown in fig. 4, the process includes:
s401, determining that the pantograph lifting relay loses power;
s402, judging whether the pantograph descending time exceeds a second preset time length; if not, executing S403, if yes, executing S404;
s403, determining the pantograph to normally fall;
s404, determining that the pantograph falls into a pantograph fault, and acquiring pantograph fault information;
and S405, isolating the failed pantograph and ensuring that the isolation cannot be released.
S406, the working contactor on the side of the fault pantograph is opened and isolated, and the isolation cannot be released.
In the pantograph fault processing process provided by the embodiment, the pantograph fault is divided into a pantograph-raising fault and a pantograph-lowering fault, the pantograph-raising fault of the pantograph belongs to a slight fault, and under the condition that the pantograph-raising fault does not exceed a first preset number of times, an isolation pantograph recovery command can be sent to the failed pantograph in a normal pantograph-lowering toggle key mode or a fault recovery button mode, so that the failed pantograph is recovered. The pantograph descending fault of the pantograph belongs to a serious fault, and the isolated pantograph cannot be recovered.
In the fault processing process of the pantograph, the fault type of the pantograph is divided in detail, the pantograph rising fault of the pantograph is a slight recoverable fault, and the redundancy of high-voltage equipment of a locomotive is improved; meanwhile, the pantograph lowering fault of the pantograph is proposed to be a serious fault, and the safety of the locomotive high-voltage equipment is ensured.
With reference to fig. 5 and fig. 6 in detail, details of acquiring the vacuum main breaker failure information in step S201 of the embodiment of fig. 2, where the vacuum main breaker failure information is used to indicate a failed vacuum main breaker, are described below.
Fig. 5 is a first flowchart of a fault processing process of the vacuum main circuit breaker according to an embodiment of the present invention, as shown in fig. 5, the process includes:
s501, determining that a relay of the vacuum main breaker is electrified;
s502, judging whether the time length from the opening to the closing of the vacuum main breaker is longer than a third preset time length or not; if not, executing S503, if yes, executing S504;
s503, determining that the vacuum main breaker is normally closed;
s504, determining that the vacuum main breaker has a fault of combining the vacuum main breaker, and disconnecting the failed vacuum main breaker;
s505, judging whether the number of times of the faults of the vacuum main circuit breaker is greater than a second preset number of times; if yes, executing S507, otherwise, executing S506;
s506, sending a recovery instruction of the isolation vacuum main breaker to the failed vacuum main breaker, and recovering the failed vacuum main breaker;
s507, acquiring fault information of the vacuum main breaker;
and S508, isolating the fault vacuum main breaker, wherein the isolation cannot be released.
Fig. 6 is a second schematic flowchart of a fault processing process of the vacuum main circuit breaker according to an embodiment of the present invention, and as shown in fig. 6, the process includes:
s601, determining that the relay of the vacuum main breaker loses power;
s602, judging whether the time length from closing to opening of the vacuum main circuit breaker is longer than a fourth preset time length; if not, executing S603, if yes, executing S604;
s603, determining that the vacuum main breaker is normally disconnected;
s604, determining that the vacuum main breaker breaks the vacuum main breaker, and acquiring fault information of the vacuum main breaker;
and S605, isolating the fault vacuum main breaker, wherein the isolation cannot be released.
And S606, disconnecting and isolating the working contactor and the redundant contactor on the side of the fault vacuum main circuit breaker, wherein the isolation cannot be released.
The main circuit breaker failure processing process in vacuum that this embodiment provided divide into the main circuit breaker trouble in vacuum and closes the main circuit breaker trouble in vacuum and breaks the main circuit breaker trouble two kinds, close the main circuit breaker trouble in vacuum and belong to slight trouble, need break off the main circuit breaker in vacuum of trouble, under the condition that does not exceed the second and predetermine the number of times, can pull the mode of key or trouble recovery button through the main circuit breaker that breaks vacuum, send the main circuit breaker in vacuum that keeps apart the main circuit breaker recovery instruction and give the trouble, the main circuit breaker in vacuum that will break the trouble resumes. The main vacuum circuit breaker breaking fault of the main vacuum circuit breaker belongs to a serious fault, the main vacuum circuit breaker breaking fault and a corresponding pantograph are required to be isolated and lowered, and the isolated main vacuum circuit breaker cannot be recovered.
The fault processing process of the vacuum main circuit breaker provided by the embodiment specifically partitions the fault type of the vacuum main circuit breaker, provides that the fault of the vacuum main circuit breaker is a slight recoverable fault, and only the vacuum main circuit breaker with the fault is required to be isolated, so that the redundancy of high-voltage equipment of a locomotive is improved; meanwhile, the fault of the vacuum main breaker is a serious fault, and the vacuum main breaker with the fault needs to be isolated, so that the safety of the high-voltage equipment of the locomotive is ensured, and the redundancy of the high-voltage equipment of the locomotive is also ensured.
Step S202 in the embodiment of fig. 2 is described in detail below with reference to specific embodiments. Fig. 7 is a schematic flow chart of a conversion process of the high-voltage conversion contactor according to the embodiment of the present invention, as shown in fig. 7, the process includes:
and S701, determining that the mode of the pantograph is a single-pantograph mode.
Optionally, the pantograph mode is divided into a single pantograph mode and a double pantograph mode, the single pantograph mode is divided into a front pantograph mode, a rear pantograph mode and an automatic mode, the single pantograph mode corresponds to the first pantograph, the second pantograph and the pantograph far away from the main control end to be raised, and the double pantograph mode corresponds to the first pantograph and the second pantograph to be raised. The pantograph far away from the main control end is determined by the position of the main control end, and if the first pantograph is closer to the main control end than the second pantograph, the pantograph far away from the main control end is the second pantograph. Otherwise, the pantograph far away from the main control end is the first pantograph.
Optionally, the mode of the pantograph may be switched according to actual needs, but the mode of the pantograph must be switched to meet a third preset condition, including that the locomotive is in a stationary state and the high-voltage equipment is in a disconnected state.
Specifically, in the front bow mode, the first pantograph is raised. And if the first pantograph fails, manually switching to other pantograph modes according to the failure information of the first pantograph, otherwise, the pantograph cannot be lifted. In the rear-bow mode, the second pantograph is raised. And if the second pantograph fails, manually switching to other pantograph modes according to the failure information of the second pantograph, otherwise, the pantograph cannot be lifted.
In the automatic mode, the pantograph, which is remote from the train master, is raised. And if the pantograph far away from the locomotive main control end fails, switching the pantograph of the locomotive main control end to lift according to the failure information of the pantograph.
In the double-pantograph mode, two pantographs are lifted, if a first pantograph is close to a master control end of the locomotive, the first pantograph is lifted for scraping ice, a second pantograph is lifted, a second vacuum main circuit breaker is closed, a second working contactor is closed for contacting with a high-voltage power grid on a railway side, and power of the power grid is transmitted to the locomotive; if the second pantograph is close to the master control end of the locomotive, the second pantograph is lifted to scrape ice, the first pantograph is lifted, the first vacuum main circuit breaker is closed, the first working contactor is closed to be in contact with a high-voltage power grid on a railway side, and power of the power grid is transmitted to the locomotive. Specifically, in this embodiment, the pantograph mode is a single-pantograph mode, that is, the first pantograph is raised, the contact of the grid voltage conversion relay on one side of the first pantograph is contacted, the first vacuum main breaker is closed, and the first operating contactor is closed, so that a high-voltage current path is formed.
Optionally, in this embodiment, the pantograph mode is a single pantograph mode, or may be a single pantograph mode in which the second pantograph is raised, the contact of the grid voltage conversion relay on one side of the second pantograph is contacted, the second vacuum main circuit breaker is closed, and the second operating contactor is closed, so as to form a high-voltage current path.
And S702, acquiring pantograph fault information, wherein the pantograph fault information is used for indicating that a first pantograph is in fault.
Here, the first pantograph is described as an example of the case where the first pantograph is out of order. S702 provided in this embodiment is similar to the embodiment of fig. 3 and 4, and is not described herein again.
Optionally, if the single-pantograph mode of the pantograph is that the second pantograph is raised, the pantograph fault information is used to indicate that the second pantograph is faulty.
And S703, controlling the first working contactor and the redundant contactor to be disconnected and controlling the second working contactor to be closed according to the fault information of the pantograph.
Specifically, the first working contactor and the redundant contactor are controlled to be disconnected, and the second working contactor is controlled to be closed, so that the second pantograph is put into operation, and a high-voltage current path is formed.
Optionally, if the pantograph fault information is used to indicate that the second pantograph has a fault, the second working contactor and the redundant contactor are controlled to be disconnected, and the first working contactor is controlled to be closed, so that the first pantograph is put into operation to form a high-voltage current path.
In the conversion processing process of the high-voltage conversion contactor provided by the embodiment of the invention, the mode of the pantograph is determined to be a single-pantograph mode, the first pantograph is lifted, the fault information of the pantograph is obtained, the fault information of the pantograph is used for indicating the first pantograph to have a fault, the first working contactor and the redundant contactor are controlled to be disconnected according to the fault information of the pantograph, the second working contactor is controlled to be closed, the second pantograph is enabled to be put into operation, a high-voltage current path is formed, and the problem that the high-voltage current path cannot be formed due to the fault of the first pantograph is avoided.
In the conversion processing process of the high-voltage conversion contactor provided by the embodiment of the invention, the mode of the pantograph is determined to be a single-pantograph mode, the second pantograph is lifted, the fault information of the pantograph is obtained, the fault information of the pantograph is used for indicating the second pantograph to have a fault, the second working contactor and the redundant contactor are controlled to be disconnected according to the fault information of the pantograph, and the first working contactor is controlled to be closed, so that the first pantograph is put into operation to form a high-voltage current path. The problem that the second pantograph fails to form a high-voltage current path is avoided.
The following describes in detail the processing procedure of the pantograph mode being the single-pantograph mode and the failure of the pantograph and the vacuum main breaker, with reference to the specific embodiment. Fig. 8 is a second schematic flowchart of a method for controlling redundancy of a high-voltage system of a locomotive according to an embodiment of the present invention, as shown in fig. 8, the process includes:
s801, determining that the mode of the pantograph is a single-pantograph mode.
S801 provided in this embodiment is similar to S701 provided in the embodiment of fig. 7, and is not described herein again.
S802, pantograph fault information and vacuum main breaker fault information are obtained, the pantograph fault information is used for indicating that a first pantograph breaks down, and the vacuum main breaker fault information is used for indicating that a first vacuum main breaker breaks down.
S802 provided in this embodiment is similar to S201 provided in the embodiment of fig. 2, and is not described here again.
Optionally, pantograph fault information and vacuum main circuit breaker fault information are obtained, the pantograph fault information is used for indicating that a first pantograph breaks down, and the vacuum main circuit breaker fault information can be used for indicating that a second vacuum main circuit breaker breaks down.
Optionally, pantograph fault information and vacuum main breaker fault information are obtained, the pantograph fault information is used for indicating that the second pantograph breaks down, and the vacuum main breaker fault information is used for indicating that the first vacuum main breaker breaks down.
Optionally, pantograph fault information and vacuum main breaker fault information are obtained, the pantograph fault information is used for indicating that the second pantograph breaks down, and the vacuum main breaker fault information can be used for indicating that the second vacuum main breaker breaks down.
And S803, controlling the first working contactor to be opened and the redundant contactor to be opened, and controlling the second working contactor to be closed.
Specifically, pantograph fault information is used for instructing first pantograph to break down, and vacuum main circuit breaker fault information is used for instructing first vacuum main circuit breaker to break down, then according to pantograph fault information and vacuum main circuit breaker fault information, controls first work contactor disconnection and redundant contactor disconnection, and second work contactor is closed for second pantograph and second vacuum main circuit breaker put into operation.
Optionally, the pantograph fault information is used for indicating that the first pantograph breaks down, the vacuum main circuit breaker fault information is used for indicating that the second vacuum main circuit breaker breaks down, and then according to the pantograph fault information and the vacuum main circuit breaker fault information, the first working contactor is controlled to be disconnected, and the second working contactor and the redundant contactor are closed, so that the second pantograph and the first vacuum main circuit breaker are put into operation.
Optionally, the pantograph fault information is used for indicating that the second pantograph breaks down, the vacuum main circuit breaker fault information is used for indicating that the first vacuum main circuit breaker breaks down, then according to pantograph fault information and vacuum main circuit breaker fault information, the first working contactor and the redundant contactor are controlled to be closed, and the second working contactor is disconnected, so that the first pantograph and the second vacuum main circuit breaker are put into operation.
Optionally, the pantograph fault information is used for indicating that the second pantograph breaks down, the vacuum main circuit breaker fault information is used for indicating that the second vacuum main circuit breaker breaks down, then according to pantograph fault information and vacuum main circuit breaker fault information, the first working contactor is controlled to be closed, and the redundant contactor and the second working contactor are disconnected, so that the first pantograph and the second vacuum main circuit breaker are put into operation.
And S804, controlling the contact of the network voltage conversion relay on the contact of one side of the second pantograph according to the fault information of the pantograph.
Optionally, the high-voltage transformer may receive a network voltage signal of the first pantograph or the second pantograph through a contact change of the network voltage conversion relay, and the switching of the network voltage conversion relay contact is realized by a state feedback signal of the pantograph.
When no pantograph rises, the network voltage conversion relay keeps unchanged;
when one pantograph of the locomotive is lifted, the contact of the network voltage conversion relay is switched to one side corresponding to the lifted pantograph; if the corresponding pantograph is in fault, the network voltage conversion relay is switched to the normal side of the pantograph;
optionally, when the locomotive is tested in the garage, the switching of the contact of the network voltage conversion relay is realized through pantograph mode selection. The in-warehouse test means that the power supply of the high-voltage current path of the locomotive is not from the pantograph net but from the in-warehouse power supply, and the pantograph is not lifted generally during the in-warehouse test, so that the in-warehouse test cannot be determined by the lifting state of the pantograph of the locomotive.
Specifically, in this embodiment, according to the pantograph fault information, the pantograph fault information is used to indicate that the first pantograph has a fault, and then the contact of the second pantograph side of the grid voltage conversion relay is controlled, so that the second pantograph, the voltage transformer and the grid voltage conversion relay which normally operate are closed at the contact of the second pantograph side to form a current path, and the grid voltage information can be normally acquired.
Optionally, according to the pantograph fault information, the pantograph fault information is used for indicating that the second pantograph has a fault, and then the contact of the network voltage conversion relay on one side of the first pantograph is controlled, so that the normally working contacts of the first pantograph, the voltage transformer and the network voltage conversion relay on one side of the first pantograph are closed to form a current path, and the network voltage information can be normally acquired.
The redundancy control method of the locomotive high-voltage system provided by the embodiment of the invention judges that the mode of the pantograph is a single-pantograph mode; acquiring pantograph fault information and vacuum main circuit breaker fault information, wherein the pantograph fault information is used for indicating that a first pantograph or a second pantograph breaks down, and the vacuum main circuit breaker fault information is used for indicating that the first vacuum main circuit breaker or the second vacuum main circuit breaker breaks down; according to the fault information of the pantograph and the fault information of the vacuum main circuit breaker, the high-voltage conversion contactor is subjected to conversion operation, so that the pantograph and the vacuum main circuit breaker which do not have faults are put into operation to form a high-voltage current path together with the transformer, and the problem that when the vacuum main circuit breaker has a fault, the high-voltage current path cannot be formed and the locomotive is broken is solved. According to the fault information of the pantograph, the network voltage conversion relay is switched, so that the normally working pantograph, the voltage transformer and the network voltage conversion relay form a current path by closing the contact on the side of the non-faulted pantograph, and the network voltage information can be normally acquired.
The following describes in detail the process of the vacuum main breaker failure, in which the pantograph mode is the double-pantograph mode, with reference to specific embodiments. Fig. 9 is a schematic flowchart of a third method for controlling redundancy of a high-voltage system of a locomotive according to an embodiment of the present invention, as shown in fig. 9, the process includes:
and S901, determining that the mode of the pantograph is a double-pantograph mode.
Specifically, in this embodiment, the pantograph mode is a double-pantograph mode, that is, the first pantograph and the second pantograph are raised, the pantograph near the locomotive main control end is raised for scraping ice, and the pantograph far from the train main control end is raised for contacting with a high-voltage power grid at a railway side, so as to deliver power grid to the locomotive. And the contact point of one side of the network voltage conversion relay, which is far away from the pantograph in the locomotive main control direction, is contacted, and the vacuum main circuit breaker corresponding to the pantograph, which is far away from the locomotive main control end, is closed to form a high-voltage current path. If the pantograph of the locomotive close to the master control end breaks down, the high-voltage path is not affected, and the pantograph does not need to be switched. If the pantograph far away from the master control end of the locomotive breaks down, the high-voltage path is affected, according to the fault information of the pantograph, the pantograph close to the master control end of the locomotive is used for transmitting power of a power grid, a vacuum main circuit breaker close to the master control end of the locomotive is switched to be closed, and a contact of a network voltage conversion relay on one side of the pantograph close to the master control end of the locomotive is closed.
S902, acquiring the fault information of the main vacuum circuit breaker, wherein the fault information of the main vacuum circuit breaker is used for indicating that a second main vacuum circuit breaker breaks down;
s902 provided in this embodiment is similar to S201 provided in the embodiment of fig. 2, and is not described here again.
Optionally, the obtained fault information of the main vacuum circuit breaker may also be used to indicate that the first main vacuum circuit breaker has a fault, specifically determined by the failed main vacuum circuit breaker.
And S903, controlling the second working contactor and the redundant contactor to be disconnected and the first working contactor to be closed according to the fault information of the vacuum main breaker.
Specifically, in this embodiment, according to the vacuum main breaker failure information, the vacuum main breaker failure information is used to indicate that the second vacuum main breaker has failed, and then the redundant contactor and the second operating contactor are controlled to be disconnected, and the first operating contactor is closed, so that the second pantograph and the first vacuum main breaker are put into operation.
Optionally, the fault signal of the vacuum main breaker is used for indicating that the first vacuum main breaker has a fault,
the second working contactor is controlled to be closed and the redundant working contactor and the first working contactor are disconnected, so that the second pantograph and the second vacuum main breaker are put into operation.
Optionally, if the pantograph fault information is obtained, the switching operation is performed on the high-voltage conversion contactor according to the pantograph fault information and/or the vacuum main circuit breaker fault information, and the specific switching process may refer to the embodiment in fig. 8, which is not described herein again.
And S904, if the pantograph fault information is acquired, switching operation is carried out on the network voltage conversion relay according to the pantograph fault information.
Further, in the double-bow mode, the network voltage conversion relay is switched by combining the position of the main control end. Specifically, when a first pantograph of the locomotive is far away from a main control end, if the first pantograph fails, a network voltage conversion relay is converted to one side of a second pantograph according to the failure information of the first pantograph; and if the second pantograph of the locomotive is far away from the master control end, if the second pantograph breaks down, switching the network voltage conversion relay to one side of the first pantograph according to the fault information of the second pantograph.
In the redundancy control method for the locomotive high-voltage system provided by the embodiment, the mode of the pantograph is judged to be a double-pantograph mode; acquiring fault information of a main vacuum circuit breaker, wherein the fault information of the main vacuum circuit breaker is used for indicating a second main vacuum circuit breaker to have a fault; according to the fault information of the vacuum main circuit breaker, the first working contactor is controlled to be disconnected, the redundant contactor and the second working contactor are closed to enable the second pantograph and the first vacuum main circuit breaker to be put into work, so that the second pantograph and the first vacuum main circuit breaker form a high-voltage current path, the problem that each locomotive is provided with only one vacuum main circuit breaker is avoided, and when the vacuum main circuit breaker breaks down, the high-voltage current path cannot be formed, and the locomotive is broken.
Fig. 10 is a schematic diagram of a redundant control system for a high voltage system of a locomotive according to an embodiment of the present invention, as shown in fig. 10, the system includes: control device 101 and locomotive high voltage redundant circuit 102, locomotive high voltage redundant circuit includes: a first pantograph 1021, a second pantograph 1022, a high-voltage switching contactor 1023, a first vacuum main breaker 1024, a second vacuum main breaker 1025, a transformer 1026, a first high-voltage transformer 1027, a second high-voltage transformer 1028, and a grid voltage switching relay 1029,
the high-voltage conversion contactor 1023 is respectively connected with a first pantograph 1021, a second pantograph 1022, a first vacuum main breaker 1024 and a second vacuum main breaker 1025, the high-voltage conversion contactor 1023 is also respectively connected with a first high-voltage transformer 1027 and a second high-voltage transformer 1028, the transformer 1026 is respectively connected with the first vacuum main breaker 1024 and the second vacuum main breaker 1025, and the first high-voltage transformer 1027 and the second high-voltage transformer 1028 are also connected with a network voltage conversion relay 1029; the control device 101 is connected with the high-voltage conversion contactor 1023 and the network voltage conversion relay 1029 respectively;
the control device is adapted to perform the method as described in fig. 1 to 9.
Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. The redundancy control method of the locomotive high-voltage system is applied to a locomotive high-voltage redundancy circuit, and the locomotive high-voltage redundancy circuit comprises the following steps: the high-voltage conversion contactor is respectively connected with the first pantograph, the second pantograph, the first vacuum main circuit breaker and the second vacuum main circuit breaker, the high-voltage conversion contactor is also respectively connected with the first high-voltage transformer and the second high-voltage transformer, the transformer is respectively connected with the first vacuum main circuit breaker and the second vacuum main circuit breaker, and the first high-voltage transformer and the second high-voltage transformer are also connected with the network voltage conversion relay; the method comprises the following steps:
acquiring fault information of a pantograph and/or fault information of a vacuum main circuit breaker, wherein the fault information of the pantograph is used for indicating a faulted pantograph, and the fault information of the vacuum main circuit breaker is used for indicating the faulted vacuum main circuit breaker;
according to the fault information of the pantograph and/or the fault information of the vacuum main circuit breaker, the high-voltage conversion contactor is subjected to conversion operation under the condition that a first preset condition is met; if the fault information of the pantograph is obtained, switching operation is carried out on the network voltage conversion relay under the condition that a second preset condition is met according to the fault information of the pantograph;
the high voltage conversion contactor includes: the system comprises a first working contactor, a second working contactor and a redundant contactor; the first working contactor is respectively connected with the first pantograph and the first vacuum main circuit breaker, and the second working contactor is respectively connected with the second pantograph and the second vacuum main circuit breaker; the redundant contactor is respectively connected with the first working contactor and the second working contactor;
the pantograph mode is divided into a single-pantograph mode and a double-pantograph mode, and the pantograph mode can be switched when a third preset condition is met;
the single-bow mode is divided into a front-bow mode, a rear-bow mode and an automatic mode;
in the front bow mode, the first pantograph is raised; if the first pantograph is in fault, manually switching to the second pantograph to lift according to the fault information of the first pantograph;
in the rear-bow mode, the second pantograph is raised; if the second pantograph fails, manually switching to the first pantograph to lift up according to the failure information of the second pantograph;
in the automatic mode, the pantograph far away from the main control end is lifted; if the pantograph far away from the main control end fails, automatically switching to be close to the main control end to lift up according to the failure information of the pantograph far away from the main control end;
the first preset condition includes: the first pantograph and/or the second pantograph is in a raised state, the first working contactor, the second working contactor and the redundant contactor are not all isolated;
the second preset condition includes: the first pantograph and/or the second pantograph is/are in a raised state;
the third preset condition includes: the locomotive is in a static state, and high-voltage equipment in the locomotive is in a disconnected state.
2. The method of claim 1, wherein said obtaining pantograph fault information comprises:
after a pantograph relay is electrified, judging whether a pantograph rises within a first preset time length or not, if not, determining that the pantograph rises and fails, and acquiring pantograph failure information when the frequency of pantograph rising and failure is greater than a first preset frequency; or
And after the pantograph relay loses power, judging whether the pantograph descending time exceeds a second preset time length, if so, determining that the pantograph descending fault occurs in the pantograph, and acquiring the pantograph fault information.
3. The method of claim 1, wherein the obtaining vacuum main breaker fault information comprises:
after a relay of a main vacuum circuit breaker is electrified, judging whether the time from the opening to the closing of the main vacuum circuit breaker is longer than a third preset time, if so, determining that the main vacuum circuit breaker has a main vacuum circuit breaker closing fault, and acquiring fault information of the main vacuum circuit breaker when the frequency of the main vacuum circuit breaker closing faults is larger than a second preset frequency; or
After the relay of the vacuum main circuit breaker is powered off, whether the time from closing to opening of the vacuum main circuit breaker is longer than the fourth preset time is judged, if yes, the fact that the vacuum main circuit breaker breaks the vacuum main circuit breaker is determined, and the fault information of the vacuum main circuit breaker is obtained.
4. The method of claim 1, wherein if the mode of the pantograph is a single-pantograph mode;
if pantograph fault information is acquired and is used for indicating that a first pantograph has a fault, the high-voltage conversion contactor is subjected to conversion operation according to the pantograph fault information, and the conversion operation comprises the following steps:
according to the fault information of the pantograph, the first working contactor and the redundant contactor are controlled to be disconnected, and the second working contactor is controlled to be closed;
if the pantograph fault information is acquired, switching the network voltage conversion relay according to the pantograph fault information, wherein the switching operation comprises the following steps:
and controlling the contact of the network voltage conversion relay to be switched to one side of a second pantograph according to the fault information of the pantograph.
5. The method of claim 1, wherein if the mode of the pantograph is a single-pantograph mode;
if obtain pantograph fault information and vacuum main circuit breaker fault information, pantograph fault information is used for instructing first pantograph to break down, vacuum main circuit breaker fault information is used for instructing first vacuum main circuit breaker to break down, then according to pantograph fault information with vacuum main circuit breaker fault information is right high-voltage conversion contactor carries out the conversion operation, includes:
according to the fault information of the pantograph and the fault information of the vacuum main circuit breaker, the first working contactor is controlled to be disconnected with the redundant contactor, and the second working contactor is controlled to be closed;
if the pantograph fault information is acquired, switching the network voltage conversion relay according to the pantograph fault information, wherein the switching operation comprises the following steps:
and controlling the contact of the network voltage conversion relay to be switched to one side of a second pantograph according to the fault information of the pantograph.
6. The method of claim 1, wherein if the mode of the pantograph is a double-pantograph mode;
if the locomotive main control end changes, obtaining locomotive main control end information, wherein the locomotive main control end information is used for indicating the direction that a first pantograph is close to the locomotive main control end, and then carrying out conversion operation on the high-voltage conversion contactor according to the locomotive main control end information, and the method comprises the following steps:
controlling the second working contactor to be closed and the redundant contactor to be disconnected with the first working contactor according to the information of the locomotive main control end;
and if the locomotive master control end information is acquired, controlling the contact of the network voltage conversion relay on one side of the second pantograph to be contacted and the contact on one side of the first pantograph to be disconnected according to the locomotive master control end information.
7. The method of claim 1, wherein if the mode of the pantograph is a double-pantograph mode;
if acquire vacuum main circuit breaker fault information, vacuum main circuit breaker fault information is used for instructing first vacuum main circuit breaker to break down, then according to vacuum main circuit breaker fault information, right the high voltage conversion contactor carries out the conversion operation, include:
controlling a second working contactor to be closed and a redundant contactor to be disconnected with a first working contactor according to the fault information of the vacuum main circuit breaker;
if the fault information of the vacuum main breaker is obtained, switching operation is carried out on the network voltage conversion relay according to the fault information of the vacuum main breaker, and the switching operation comprises the following steps:
and controlling the contact of the grid voltage conversion relay on one side of a second pantograph to be contacted and the contact on one side of a first pantograph to be disconnected according to the fault information of the vacuum main circuit breaker.
8. A locomotive high-pressure system redundancy control system, comprising: control device and locomotive high voltage redundant circuit, locomotive high voltage redundant circuit includes: the high-voltage conversion contactor is respectively connected with the first pantograph, the second pantograph, the first vacuum main circuit breaker and the second vacuum main circuit breaker, the high-voltage conversion contactor is also respectively connected with the first high-voltage transformer and the second high-voltage transformer, the transformer is respectively connected with the first vacuum main circuit breaker and the second vacuum main circuit breaker, and the first high-voltage transformer and the second high-voltage transformer are also connected with the network voltage conversion relay; the control equipment is respectively connected with the high-voltage conversion contactor and the network voltage conversion relay;
the control device is adapted to perform the method of any of claims 1 to 7.
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| CN201811502618.2A CN109703368B (en) | 2018-12-10 | 2018-12-10 | Redundancy control method and system for locomotive high-voltage system |
| PCT/CN2019/097249 WO2020119125A1 (en) | 2018-12-10 | 2019-07-23 | Redundancy control method and system for locomotive high-voltage system |
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| CN201811502618.2A CN109703368B (en) | 2018-12-10 | 2018-12-10 | Redundancy control method and system for locomotive high-voltage system |
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| CN109703368B (en) * | 2018-12-10 | 2021-02-02 | 中车大连机车车辆有限公司 | Redundancy control method and system for locomotive high-voltage system |
| CN110293846B (en) * | 2019-06-21 | 2020-12-11 | 中车青岛四方机车车辆股份有限公司 | Method and system for controlling train alternating current bus contactor and train |
| CN111086390B (en) * | 2020-01-06 | 2023-05-02 | 中车株洲电力机车有限公司 | High-voltage power supply conversion system and method for urban rail vehicle |
| CN111251890B (en) * | 2020-01-17 | 2022-02-11 | 中车株洲电力机车有限公司 | Heterogeneous redundancy control circuit and control method for urban rail vehicle and urban rail vehicle |
| CN112526253A (en) * | 2020-11-03 | 2021-03-19 | 中车青岛四方机车车辆股份有限公司 | Overcurrent fault detection system and method and railway vehicle |
| CN112829594B (en) * | 2021-01-21 | 2023-01-20 | 中车株洲电力机车有限公司 | Power supply control method, system, controller and train for train in single-bow fault |
| CN112977067B (en) * | 2021-03-03 | 2022-02-11 | 南京恒天领锐汽车有限公司 | Electrifying strategy for high-voltage power distribution cabinet of pure electric logistics vehicle |
| CN113968137A (en) * | 2021-11-25 | 2022-01-25 | 中车大连机车车辆有限公司 | Network voltage signal redundancy control method of electric locomotive |
| CN114325377A (en) * | 2022-01-04 | 2022-04-12 | 中车株洲电力机车有限公司 | System and method for diagnosing and predicting fault of vacuum main circuit breaker and locomotive |
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| CN107472086A (en) * | 2017-06-30 | 2017-12-15 | 中车大连机车车辆有限公司 | The double main disconnected control systems of power concentration EMUs power car |
| CN108572574A (en) * | 2018-05-18 | 2018-09-25 | 中车株洲电力机车有限公司 | The high pressure circuit on side of overhead contact line and its control method of power car in a kind of EMU |
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| CN102381198A (en) * | 2011-11-29 | 2012-03-21 | 南车株洲电力机车有限公司 | High-voltage circuit for electric locomotive unit |
| CN205601632U (en) * | 2016-05-18 | 2016-09-28 | 福开尔（西安）电气有限公司 | Redundant circuit system of electric locomotive high pressure is kept apart to disconnected nature of two owners |
| CN108773301B (en) * | 2018-06-13 | 2021-09-21 | 株洲时代电子技术有限公司 | Control method and application of high-voltage system of power supply of contact network |
| CN109703368B (en) * | 2018-12-10 | 2021-02-02 | 中车大连机车车辆有限公司 | Redundancy control method and system for locomotive high-voltage system |
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- 2018-12-10 CN CN201811502618.2A patent/CN109703368B/en active Active
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- 2019-07-23 WO PCT/CN2019/097249 patent/WO2020119125A1/en active Application Filing
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| CN102424004A (en) * | 2011-10-24 | 2012-04-25 | 南车株洲电力机车有限公司 | Motor train unit line-side circuit and control method thereof |
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| CN106515458A (en) * | 2016-12-08 | 2017-03-22 | 中车株洲电力机车有限公司 | Method and system for controlling high-voltage isolating switches of electric locomotive group |
| CN206493850U (en) * | 2017-01-16 | 2017-09-15 | 中车株洲电力机车有限公司 | A kind of electric rail car group power supply circuit and the electric rail car group |
| CN107472086A (en) * | 2017-06-30 | 2017-12-15 | 中车大连机车车辆有限公司 | The double main disconnected control systems of power concentration EMUs power car |
| CN108572574A (en) * | 2018-05-18 | 2018-09-25 | 中车株洲电力机车有限公司 | The high pressure circuit on side of overhead contact line and its control method of power car in a kind of EMU |
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| CN109703368A (en) | 2019-05-03 |
| WO2020119125A1 (en) | 2020-06-18 |
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