CN109239562A - The Insulation Inspection System of train and train - Google Patents
The Insulation Inspection System of train and train Download PDFInfo
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- CN109239562A CN109239562A CN201710557825.7A CN201710557825A CN109239562A CN 109239562 A CN109239562 A CN 109239562A CN 201710557825 A CN201710557825 A CN 201710557825A CN 109239562 A CN109239562 A CN 109239562A
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- compartment
- electrode bus
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/14—Circuits therefor, e.g. for generating test voltages, sensing circuits
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
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- General Physics & Mathematics (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention discloses a kind of train and the Insulation Inspection Systems of train, train is powered by power grid, power grid includes power grid positive electrode bus and power grid negative electrode bus, train includes multiple compartments, train insulation detection device and train control, each compartment includes: compartment positive electrode bus, and compartment positive electrode bus is connected with power grid positive electrode bus；Compartment negative electrode bus, compartment negative electrode bus are connected with power grid negative electrode bus；The first current sensor being connected between compartment positive electrode bus and compartment negative electrode bus；The load being connected with the first current sensor；The fault locator being connected between compartment positive electrode bus and compartment negative electrode bus；Train control, for when train insulation detection device detects insulation fault, successively start the fault locator in multiple compartments, and insulation fault is positioned by the fault locator in compartment, thus, for example specific compartment in position that insulation fault occurs and specific load can be accurately determined, the reliability of train power supply is improved.
Description
Technical field
The present invention relates to technical field of vehicle, in particular to the Insulation Inspection System of a kind of train and with the system
Train.
Background technique
With the development of the times, most train all uses electric energy as power, for example, train power supply device can be first by power grid
Power conversion be 860 volts or so of alternating current, be then by AC conversion again supply train after 600 volts of direct currents, or
Electricity supply train can be taken from 1500 volts or 750 volts of DC grids.It is run under the power supply of the most high-voltage electricity of train as a result, to ensure
The personal safety of equipment and passenger on train needs to carry out Insulation monitoring after train operation.
Current sensor is arranged to judge whether to insulate by the grounding point in train power supply device in the related technology
Failure.But in the related technology the problem is that, can not timely and accurately detect the insulation status of vehicle electrical-mechanical system,
It can not judge the position that insulation fault occurs, it is difficult to failure car separated.
Summary of the invention
The present invention is directed to solve one of the technical problem in above-mentioned technology at least to a certain extent.For this purpose, of the invention
One purpose is to propose a kind of Insulation Inspection System of train, can detect insulation fault in time, and accurately determine hair
The position of raw insulation fault.
Second object of the present invention is to propose a kind of train.
In order to achieve the above objectives, first aspect present invention embodiment proposes a kind of Insulation Inspection System of train, described
Train is powered by power grid, and the power grid includes power grid positive electrode bus and power grid negative electrode bus, and the train includes multiple compartments, column
Vehicle insulation detection device and train control, each compartment include: compartment positive electrode bus, the compartment positive electrode bus and the electricity
Net positive electrode bus is connected；Compartment negative electrode bus, the compartment negative electrode bus are connected with the power grid negative electrode bus；It is connected to described
The first current sensor between compartment positive electrode bus and compartment negative electrode bus；What is be connected with first current sensor is negative
It carries；The fault locator being connected between the compartment positive electrode bus and the compartment negative electrode bus；The train control,
For when the train insulation detection device detects insulation fault, successively starting the dress of the fault location in the multiple compartment
It sets, and insulation fault is positioned by the fault locator in compartment.
The Insulation Inspection System of the train proposed according to embodiments of the present invention, positive electrode bus and compartment negative electrode bus in compartment
Between connect the first current sensor, and load is connected with the first current sensor, and in compartment positive electrode bus and compartment cathode
Connecting fault positioning device between bus, train control are successively opened when train insulation detection device detects insulation fault
The fault locator in multiple compartments is moved, and insulation fault is positioned by the fault locator in compartment.As a result,
For example specific compartment in position that insulation fault occurs can be accurately determined by the first current sensor and fault locator
With specific load, it is ensured that the personal safety of equipment and passenger on train improves the reliability and safety of train power supply.
In order to achieve the above objectives, second aspect of the present invention embodiment proposes a kind of train, including the Insulation monitoring
System.
The train proposed according to embodiments of the present invention can accurately determine for example specific vehicle in position that insulation fault occurs
Compartment and specific load, improve the reliability and safety of train power supply.
Detailed description of the invention
Fig. 1 is the structural schematic diagram according to the Insulation Inspection System of the train of one embodiment of the invention；
Fig. 2 is the structural schematic diagram in each compartment in Insulation Inspection System according to the train of one embodiment of the invention；
Fig. 3 is the circuit theory according to fault locator in the Insulation Inspection System of the train of one embodiment of the invention
Figure, wherein negative insulation detection is carried out to load；
Fig. 4 is the circuit theory according to fault locator in the Insulation Inspection System of the train of one embodiment of the invention
Figure, wherein positive Insulation monitoring is carried out to load；
Fig. 5 is the structural representation in each compartment in Insulation Inspection System according to the train of another embodiment of the present invention
Figure, wherein using non-isolation DC/DC module；
Fig. 6 is the structural representation in each compartment in the Insulation Inspection System according to the train of another embodiment of the invention
Figure, wherein using non-isolation DC/DC module；
Fig. 7 is the structural representation in each compartment in Insulation Inspection System according to the train of another embodiment of the present invention
Figure, wherein using two-way isolation DC/DC module；
Fig. 8 is the circuit according to compartment insulation detection device in the Insulation Inspection System of the train of one embodiment of the invention
Schematic diagram；And
Fig. 9 is the electricity according to compartment insulation detection device in the Insulation Inspection System of the train of another embodiment of the present invention
Road schematic diagram.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
With reference to the accompanying drawing come describe the embodiment of the present invention train Insulation Inspection System and with the column of the system
Vehicle.It should be noted that in some embodiments of the invention, train is using vehicle shell as ground connection reference point, in other words, train
It is connected between ground wire and the earth without conductor, it is using suspension " ground " i.e. vehicle shell as ground connection reference point, for example, train uses rubber
Rubber tire tire, vehicle shell and the earth insulate, and entire train uses floating neutral system as a result,.
According to the embodiment of Fig. 1-2, train can be powered by power grid, and power grid includes that power grid positive electrode bus L1 and power grid cathode are female
Line L2, train may include multiple compartments 10, train insulation detection device 20 and train control 30.A reality according to the present invention
Apply example, Insulation Inspection System can each compartment 10 etc. to train and train carry out Insulation monitoring to judge whether to insulate
Failure, and after insulation fault occurs for judgement, insulation fault is positioned by the fault locator in each compartment 10,
So as to detect insulation fault in time, and accurately determines for example specific compartment in position that insulation fault occurs and specifically bear
It carries, it is ensured that the personal safety of equipment and passenger on train improves the reliability and safety of train power supply.
According to the embodiment of Fig. 1, train insulation detection device 20 is connected to power grid positive electrode bus L1 and power grid negative electrode bus
Between L2.Train insulation detection device 20 is used to detect the insulation feelings between power grid positive electrode bus L1 and power grid negative electrode bus L2
Condition, that is to say, that train insulation detection device 20 is for carrying out insulation inspection to power grid positive electrode bus L1 and power grid negative electrode bus L2
It surveys.In other words, train insulation detection device 20 is for detecting the insulation situation of entire train.
According to the embodiment of Fig. 1-2, each compartment 10 of train is attached to the power grid positive electrode bus L1 and electricity of power grid
Net negative electrode bus L2, so that each compartment 10 that power grid is entire train powers.Each compartment 10 can include: compartment positive electrode bus
M1, compartment negative electrode bus M2, the first current sensor 110, load 120 and fault locator 130.
As shown in Figs. 1-2, positive electrode bus M1 in compartment is connected with power grid positive electrode bus L1；Compartment negative electrode bus L2 and power grid are negative
Pole bus L2 is connected.Specifically, according to one embodiment of present invention, as shown in Fig. 2, compartment positive electrode bus M1 can pass through the 6th
Switch K6 is connected with power grid positive electrode bus L1, and compartment negative electrode bus L2 can pass through the 7th switch K7 and power grid negative electrode bus L2 phase
Even, wherein when the 6th switch K6 and the 7th switch K7 are both turned on, the electrical energy transportation of power grid is negative to compartment positive electrode bus M1 and compartment
Pole bus M2, so that power grid is the power supply of compartment 10；When the 6th switch K6 and the 7th switch K7 are turned off, the electric energy of power grid stops
It is delivered to compartment positive electrode bus M1 and compartment negative electrode bus M2, so that power grid stops being that compartment 10 powers.
As shown in Figs. 1-2, the first current sensor 110 be connected to compartment positive electrode bus M1 and compartment negative electrode bus M2 it
Between；Load 120 is connected with the first current sensor 110.Specifically, as shown in Fig. 2, the anode and cathode of load 120 can be distinguished
It is connected with compartment positive electrode bus M1 and compartment negative electrode bus M2, so that power grid passes through compartment positive electrode bus M1 and compartment negative electrode bus
M2 powers to the load 120 in each compartment 10, and the first current sensor 110 may be provided at the anode of load 120 and cathode is set
The entrance in load 120 is set, the first current sensor 110 can measure the difference between the positive electrode current and cathodal current of load 120
Value.
It should be noted that load 120 is not limited to one in each compartment 10, can also be it is multiple, correspondingly, each compartment
First current sensor 110 is also not necessarily limited to one in 10, can be multiple.When the first current sensor 110 and load 120 are multiple
When, each first current sensor 110 is both connected between compartment positive electrode bus M1 and compartment negative electrode bus M2, each load
120 are connected with corresponding first current sensor 110.That is, multiple loads 120 can be connected in parallel in compartment anode mother
Line M1 and compartment negative electrode bus M2, each first current sensor 110 may be disposed at the entrance of corresponding load 120 to detect phase
Difference between the positive electrode current and cathodal current of the load 120 answered.It should be noted that in embodiments of the present invention, due to
The connection type, working principle of each load 120 is essentially identical in compartment 10, therefore, loads in the following embodiments
120 connection type, working principle etc. are suitable for each load 120 in compartment 10.
As shown in Figs. 1-2, fault locator 130 is connected between compartment positive electrode bus M1 and compartment negative electrode bus M2.
Wherein, fault locator 130 is used to be respectively turned on the access of compartment positive electrode bus M1 and compartment negative electrode bus M2 and load 120
To carry out negative insulation detection and positive Insulation monitoring to load 120.
Specifically, fault locator 130 can connect positive electrode bus M1 in compartment according to the first predetermined manner and compartment is negative
Pole bus M2 and the access of load 120 can connect vehicle according to the second predetermined manner to carry out negative insulation detection to load 120
Compartment positive electrode bus M1 and compartment negative electrode bus M2 and the access of load 120 are to carry out positive Insulation monitoring to load 120.More specifically
Ground can lead to when connecting the access of compartment positive electrode bus M1 and compartment negative electrode bus M2 and load 120 according to the first predetermined manner
The difference between the positive electrode current and cathodal current of the first current sensor 110 measurement load 120 is crossed, and is loading 120 just
When difference between electrode current and cathodal current is greater than predetermined current threshold, judges the cathode electric leakage of load 120, it is exhausted that cathode occurs
Reason barrier.Similarly, when connecting the logical of compartment positive electrode bus M1 and compartment negative electrode bus M2 and load 120 according to the second predetermined manner
Lu Shi can measure the difference between the positive electrode current and cathodal current of load 120 by the first current sensor 110, and negative
When carrying the difference between 120 positive electrode current and cathodal current greater than predetermined current threshold, the anode electric leakage of load 120 is judged,
Positive insulation fault occurs.
It is fixed failure can be carried out by the current value and fault locator 130 that the first current sensor 110 detects as a result,
Position accurately determines the specific compartment that insulation fault occurs and specific load, easy to repair convenient for by failure car separated, and
And can ensure that the equipment on train and the personal safety of passenger, improve the reliability and safety of train power supply.
The structure and principle of fault locator 130 are described in detail below with reference to the embodiment of Fig. 3 and Fig. 4.
According to one embodiment of present invention, as shown in Figure 3 and Figure 4, fault locator 130 specifically includes: the first electricity
Hinder R1, first switch K1, second resistance R2, second switch K2 and controller 131.
Wherein, first resistor R1 is connected with compartment positive electrode bus M1；First switch K1 is connected with vehicle shell；Second resistance R2
It is connected with compartment negative electrode bus M2；Second switch K2 is connected with vehicle shell.Also, first resistor R1 can connect with first switch K1
Connection, second resistance R2 can be connected in series with second switch K2.That is, one end of first resistor R1 and compartment positive electrode bus
M1 is connected, and one end of first switch K1 is connected with the other end of first resistor R1, the other end of first switch K1 with vehicle shell phase
Even；One end of second resistance R2 is connected with compartment positive electrode bus M1, one end of second switch K2 and the other end of second resistance R2
It is connected, the other end of second switch K2 is connected with vehicle shell.It should be noted that vehicle shell be train vehicle shell, by train
Vehicle shell be used as refer to grounding point.
Controller 131 is for controlling first switch K1 and second switch K2.Specifically, it does not insulate in train
When detection, controller 131 controls first switch K1 and second switch K2 and disconnects；When train carries out Insulation monitoring, controller
131 control first switch K1 closures, and control second switch K2 disconnection, the current value detected by the first current sensor 110
Negative insulation detection, and control second switch K2 closure are carried out to load 120, and control first switch K1 disconnection, by the
The current value of one current sensor 110 detection carries out positive Insulation monitoring to load 120.
Specifically, as shown in figure 3, the first equivalent resistance R31 can be equivalent insulation of the cathode of load 120 to vehicle shell ground
Resistance, as shown in figure 4, the second equivalent resistance R32 can be the positive equivalent insulation resistance to vehicle shell ground of load 120, when first
When the resistance value of equivalent resistance R31 or the second equivalent resistance R32 are less than predetermined resistance value, Insulation Inspection System can determine whether insulation event
Barrier occurs.
By default, i.e., when insulation fault does not occur, fault locator 130 does not carry out Insulation monitoring, controller
131 control first switch K1 and second switch K2 are disconnected.When insulation fault occurs, Insulation Inspection System produces failure report
Alert signal simultaneously notifies fault locator 130, and fault locator 130 carries out fault location after receiving warning message, controls
Device 131 processed can first control first switch K1 closure and second switch K2 is disconnected, the electric current detected by the first current sensor 110
Value carries out negative insulation detection to load 120, then controls second switch K2 closure and first switch K1 disconnection, passes through the first electric current
The current value that sensor 110 detects carries out positive Insulation monitoring to load 120.Certainly, positive Insulation monitoring can also be first carried out, then
Carry out negative insulation detection.
More specifically, as shown in figure 3, when first switch K1 closure and second switch K2 disconnect when, compartment positive electrode bus M1,
First resistor R1, first switch K1, vehicle shell, the first equivalent resistance R31, load 120 and compartment negative electrode bus M2 constitute circuit,
Electric current can be generated by the direction of arrow in Fig. 3 as a result, and flow through 120 corresponding first current sensors 110 of load, when the first electric current
When the current value that sensor 110 detects is greater than predetermined current threshold, the cathode electric leakage of the judgement of controller 131 load 120 loads
120 occur negative insulation failure.
Similarly, as shown in figure 4, when being closed second switch K2 and first switch K1 is disconnected, compartment positive electrode bus M1, load
120, the second equivalent resistance R32, vehicle shell, second switch K2, second resistance R2 and compartment negative electrode bus M2 constitute circuit, by
This, can generate electric current by the direction of arrow in Fig. 4 and flow through 120 corresponding first current sensors 110 of load, when the first electric current passes
When the current value that sensor 110 detects is greater than predetermined current threshold, the anode electric leakage of the judgement of controller 131 load 120 loads
120 occur negative insulation failure.
The current value that can be detected as a result, by the first current sensor 110 determines the specific load that insulation fault occurs, just
In maintenance, the reliability and safety of train power supply are improved.
Further, according to one embodiment of present invention, as seen in figs. 5-6, compartment 10 further include: battery 140, it is non-every
From DC/DC module 150 and the second current sensor 160.
Wherein, battery 140 passes through non-isolation DC/DC module 150 and compartment positive electrode bus M1 and compartment negative electrode bus M2 phase
Even.Specifically, non-isolation DC/DC module 150 can be two-way non-isolation DC/DC module 150, and non-isolation DC/DC module 150 can incite somebody to action
The first direct current between compartment positive electrode bus M1 and compartment negative electrode bus M2 is converted to the second direct current with by the second direct current
Supply battery 140, also, non-isolation DC/DC module 150 second direct current of battery 140 can be converted to the first direct current with
First direct current is supplied into compartment positive electrode bus M1 and compartment negative electrode bus M2.
As shown in figure 5, the second current sensor 160 is attached between battery 140 and non-isolation DC/DC module 150,
In, controller 131 passes through the second current sensor 160 in control first switch K1 closure, and when control second switch K2 disconnection
The current value of detection carries out negative insulation detection to battery 140, and in control second switch K2 closure, and controls first switch
When K1 is disconnected, positive Insulation monitoring is carried out to battery 140 by the current value that the second current sensor 160 detects.
That is, each compartment 10 may include grid side and battery side, between grid side and battery side for non-isolation DC/
DC module 150, grid side are equipped with fault locator 130 and load 120, and the entrance of each load 120 installs the first electric current
Sensor 110, since non-isolation DC/DC module 150 is non-type of isolation, battery side is equivalent to a branch of power grid
Road, can by installing the second current sensor 160 between battery 140 and non-isolation DC/DC module 150, with to battery 140 into
Row fault location.
In other embodiments of the invention, battery 140 and non-isolation DC/DC module 150 can also be regarded together as one
A branch, as shown in fig. 6, the second current sensor 160 can be installed before non-isolation DC/DC module 150 at this time.Namely
It says, the second current sensor 160 is attached to compartment positive electrode bus M1, compartment negative electrode bus M2 and two-way non-isolation DC/DC mould
Between block 150.
It should be understood that carrying out negative insulation inspection to battery 140 by the current value that the second current sensor 160 detects
Survey and positive Insulation monitoring and Fig. 3 and Fig. 4 embodiment in the current value that is detected by the first current sensor 110 to loading 120
The principle for carrying out negative insulation detection and positive Insulation monitoring is essentially identical, is no longer described in detail.
As a result, using two-way non-isolation DC/DC module 150, it can be detected by the second current sensor 160
Current value determine whether battery 140 occurs insulation fault, it is easy to repair, improve the reliability and safety of train power supply.
Further, according to another embodiment of the invention, as shown in fig. 7, compartment further include: battery 140, it is two-way every
From DC/DC module 151 and third current sensor 161.
Wherein, battery 140 passes through two-way isolation DC/DC module 151 and compartment positive electrode bus M1 and compartment negative electrode bus M2
It is connected.Specifically, two-way isolation DC/DC module 151 can be by first between compartment positive electrode bus M1 and compartment negative electrode bus M2
Direct current is converted to the second direct current so that the second direct current is supplied battery 140, also, two-way isolation DC/DC module 150 can incite somebody to action
Second direct current of battery 140 is converted to the first direct current so that the first direct current is supplied compartment positive electrode bus M1 and compartment cathode
Bus M2.
Third current sensor 161 is attached to compartment positive electrode bus M1, compartment negative electrode bus M 2 and two-way isolation DC/
Between DC module 151, wherein controller 131 passes through in control first switch K1 closure, and when control second switch K2 disconnection
The current value that third current sensor 161 detects carries out negative insulation detection to battery 140, and closes in control second switch K2
When closing, and controlling first switch K1 disconnection, anode is carried out to battery 140 by the current value that third current sensor 161 detects
Insulation monitoring.
That is, each compartment 10 may include grid side and battery side, between grid side and battery side can for it is two-way every
From DC/DC module 151, grid side is equipped with fault locator 130 and load 120, the entrance installation first of each load 120
Current sensor 110.Also, since battery side does not have branch, there is no need to use up in the separately installed fault locator of battery side
Fault locator is installed in grid side.
As a result, in an embodiment of the present invention, in compartment positive electrode bus M1, compartment negative electrode bus M2 and two-way isolation DC/
Third current sensor 161 is connected between DC module 151.That is, the case where using two-way module 151 isolation DC/DC
Under, third current sensor 161 can be installed before two-way isolation DC/DC module 150, fault locator 130 passes through third
Current sensor 161 to battery 140 carry out fault location, i.e., to battery 140 carry out negative insulation detection and to battery 140 into
Row anode Insulation monitoring.
It should be understood that carrying out negative insulation inspection to battery 140 by the current value that third current sensor 161 detects
Survey and positive Insulation monitoring and Fig. 3 and Fig. 4 embodiment in the current value that is detected by the first current sensor 110 to loading 120
The principle for carrying out negative insulation detection and positive Insulation monitoring is essentially identical, is no longer described in detail.
As a result, using two-way module 151 isolation DC/DC, fault locator can be passed by third electric current
The current value that sensor 161 detects determines whether battery 140 occurs insulation fault, easy to repair, improves the reliable of train power supply
Property and safety.
The Insulation monitoring mode of Insulation Inspection System is described in detail in 5-9 with reference to the accompanying drawing.
According to one embodiment of present invention, as illustrated in figs. 5-7, compartment 10 further include: compartment insulation detection device 170,
Compartment insulation detection device 170 is connected between compartment positive electrode bus M1 and compartment negative electrode bus M2, compartment insulation detection device
170 for detecting the insulation situation between compartment positive electrode bus M1 and compartment negative electrode bus M2.That is, compartment Insulation monitoring
Device 170 is used to carry out Insulation monitoring to compartment positive electrode bus M1 and compartment negative electrode bus M2.In other words, compartment Insulation monitoring fills
170 are set for detecting to the insulation situation in compartment 10.
It should be noted that in some embodiment of the invention, as seen in figs. 5-6, when battery side and grid side pass through it is non-
When the connection of DC/DC module 150 is isolated, grid side and battery side can share the same compartment insulation detection device 170.
According to another embodiment of the invention, as shown in fig. 7, when battery side and grid side pass through two-way isolation DC/DC
When module 151 connects, compartment insulation detection device 170 is used to detect the insulation situation of the grid side in compartment 10.Compartment
10 further include: the second compartment insulation detection device 180, the second compartment insulation detection device 180 are connected to 140 both ends of battery.Tool
Body, two-way isolation DC/DC module 151 have the first battery-end and the second battery-end, and the of two-way isolation DC/DC module 151
One battery-end is connected by anode bus P1 with the anode of battery 140, the second battery of two-way isolation DC/DC module 151
End is connected by battery cathode bus P2 with the cathode of battery 140, and the second compartment insulation detection device 180 is being attached to battery just
Between pole bus P1 and battery cathode bus P2.Second compartment insulation detection device 180 for detect anode bus P1 and
Insulation situation of the battery cathode bus P2 to vehicle shell.That is, the second compartment insulation detection device 180 is used for anode
Bus P1 and battery cathode bus P2 carries out Insulation monitoring.In other words, the second compartment insulation detection device 180 is used for compartment 10
The insulation situation of battery side detected.
Specifically, according to the embodiment of Fig. 8, compartment insulation detection device 170 can include: 3rd resistor R3, third switch
K3, the 4th resistance R4, the 4th switch K4, first voltage detector 171, second voltage detector 172 and tertiary voltage detector
173。
Wherein, 3rd resistor R3 and third switch K3 are serially connected, the 3rd resistor R3 and third switch K3 being serially connected
It is connected between compartment positive electrode bus M1 and vehicle shell ground；4th resistance R4 and the 4th switch K4 are serially connected, be serially connected
Four resistance R4 and the 4th switch K4 are connected between compartment negative electrode bus M2 and vehicle shell ground；First voltage detector 171 is connected in parallel on
The both ends of 3rd resistor R3, first voltage detector 171 are used to detect the voltage of 3rd resistor R3 to generate first voltage V1；The
Two voltage detectors 172 are connected in parallel on the both ends of the 4th resistance R4, and second voltage detector 172 is used to detect the electricity of the 4th resistance R4
Pressure is to generate second voltage V2；Tertiary voltage detector 173 for detect compartment positive electrode bus M1 and compartment negative electrode bus M2 it
Between voltage to generate tertiary voltage V3.
It further, according to one embodiment of present invention, can be according to the resistance value of 3rd resistor R3, the 4th resistance R4
Resistance value, first voltage V1, second voltage V2 and tertiary voltage V3 generate the insulation resistance of compartment positive electrode bus M1 and compartment is born
The insulation resistance of pole bus M2.
Specifically, as shown in Figure 8, it is assumed that compartment positive electrode bus M1 is R33, compartment cathode to the insulation resistance on vehicle shell ground
Bus M2 is R34 to the insulation resistance on vehicle shell ground.In the embodiment in fig. 8, compartment insulation detection device 170 by bridge method into
Row Insulation monitoring, wherein 3rd resistor R3 and the 4th resistance R4 is arm resistance, and third switch K3 and the 4th switch K4 are bridge arm
Switch.When carrying out Insulation monitoring, compartment insulation detection device 170 can control third switch K3 to be closed and control the 4th switch K4
Shutdown detects the voltage of 3rd resistor R3 by first voltage detector 171 to generate first voltage V1, and control the 4th is opened
It closes K4 and is closed and controls third switch K3 shutdown, the voltage of the 4th switch K4 is detected to generate by second voltage detector 172
Second voltage V2, and detected between compartment positive electrode bus M1 and compartment negative electrode bus M2 by tertiary voltage detector 173
Voltage is to generate tertiary voltage V3.
As shown in Figure 8, first voltage V1 meets following formula:Second voltage V2 meets following
Formula:Wherein, R3 is the resistance value of 3rd resistor R3, and R4 is the resistance value of the 4th resistance R4.It is false
If the resistance value of 3rd resistor R3 and the resistance value of the 4th resistance R4 are equal to R, i.e. R3=R4=R, formula is brought intoWithIt can be calculated,
It, can be according to formula as a result, after obtaining first voltage V1, second voltage V2 and tertiary voltage V3
The insulation resistance of compartment positive electrode bus M1 is calculated, and can be according to formulaCalculate compartment negative electrode bus M2
Insulation resistance.
In turn, a specific embodiment according to the present invention, when the insulation resistance of compartment negative electrode bus M2 is less than default electricity
When the insulation resistance of resistance value and/or compartment positive electrode bus M1 are less than predetermined resistance value, compartment insulation detection device 170 judges accordingly
Compartment 10 occur insulation fault.
Specifically, according to the embodiment of Fig. 9, compartment insulation detection device 170 can include: signal source A1, the 5th resistance R5,
5th switch K5, the 6th resistance R6 and the 4th voltage detector 174.
Wherein, the 5th resistance R5 and the 5th switch K5 are serially connected, the 5th resistance R5 being serially connected and the 5th switch K5
It is connected between the first end of signal source A1 and compartment positive electrode bus M1 or the first end of signal source A1 and compartment negative electrode bus M2
Between；6th resistance R6 is connected between the second end of signal source A1 and vehicle shell ground；4th voltage detector 174 is for detecting the
The voltage of six resistance R6；Wherein, when signal source A1 exports the first output voltage Vo1, the voltage of the 6th resistance R6 is the 4th voltage
When V4, signal source A2 export the second output voltage Vo2, the voltage of the 6th resistance R6 is the 5th voltage V5.
Further, can according to the resistance value of the 5th resistance R5, the resistance value of the 6th resistance R6, the first output voltage Vo1,
Second output voltage Vo2, the 4th voltage V4 and the 5th voltage V5 generate the insulation resistance or compartment anode of compartment negative electrode bus M2
The insulation resistance of bus M1.Wherein, when the 5th resistance R5 and the 5th switch the K5 first end for being connected to signal source A1 and compartment just
When between the bus M1 of pole, the insulation resistance of compartment negative electrode bus M2 is produced；When the 5th resistance R5 and the 5th switch K5 are connected to
When between the first end and compartment negative electrode bus M2 of signal source A1, the insulation resistance of compartment positive electrode bus M1 is produced.In other words,
The compartment insulation detection device 170 of 9 embodiment of connection figure between compartment positive electrode bus M1 and vehicle shell ground produces compartment cathode
The insulation resistance of bus M2, and between negative electrode bus M and vehicle shell ground 9 embodiment of connection figure compartment insulation detection device
170, produce the insulation resistance of 2 compartment positive electrode bus M1 of compartment.
Specifically, the first end and compartment negative electrode bus of signal source A1 are connected to the 5th resistance R5 and the 5th switch K5
It is illustrated between M2, since the 5th resistance R5 and the 5th switch K5 is connected to the first end and compartment anode of signal source A1
Principle between bus M1 is essentially identical with the present embodiment, is no longer described in detail here.
As shown in Figure 9, it is assumed that compartment positive electrode bus M1 is R35 to the insulation resistance on vehicle shell ground.In the embodiment in fig. 9,
Compartment insulation detection device 170 carries out Insulation monitoring by signal injection method, and the 5th resistance R5 is coupling resistance, the 6th resistance R6
For the voltage that current sampling resistor, V6 are between compartment positive electrode bus M1 and compartment negative electrode bus M2, the signal width of signal source A1
Value is variable.
When carrying out Insulation monitoring, compartment insulation detection device 170 can first control the 5th switch K5 closure, then control letter
Number source A1 according to the first output voltage Vo1 Injection Signal, by the 4th voltage detector 174 detect the voltage of the 6th resistance R6 with
The 4th voltage V4 is obtained, at this point, the 4th voltage V4 satisfiable formulaAnd control signal source A1
According to the second output voltage Vo2 Injection Signal, the voltage of the 6th resistance R6 is detected by the 4th voltage detector 174 to obtain the
Five voltage V5, at this point, the 5th voltage V5 satisfiable formula
Combinatorial formulaWithIt can obtain,
Pass through formula as a result,The exhausted of compartment positive electrode bus M1 can be calculated separately out
The insulation resistance of edge resistance and compartment negative electrode bus M2,
In turn, a specific embodiment according to the present invention, when the insulation resistance of compartment negative electrode bus M2 is less than default electricity
When the insulation resistance of resistance value and/or compartment positive electrode bus M1 are less than predetermined resistance value, compartment insulation detection device 170 judges accordingly
Compartment 10 occur insulation fault.
It can detect in time whether each compartment occurs insulation fault by compartment insulation detection device as a result, it is ensured that
The personal safety of equipment and passenger on train improves the reliability and safety of train power supply.
It should be understood that the structure of the embodiment of Fig. 8 or Fig. 9, Fig. 8 or Fig. 9 can be used in train insulation detection device 20
Embodiment be used for train insulation detection device 20 the difference is that, it is female that compartment positive electrode bus M1 is replaced with into power grid anode
Compartment negative electrode bus M2 is replaced with power grid negative electrode bus L2, can obtain the insulated electro of power grid positive electrode bus L1 as a result, by line L1
The insulation resistance of resistance and power grid negative electrode bus L2.Also, the implementation of Fig. 8 or Fig. 9 can be used in the second compartment insulation detection device 180
The embodiment of the structure of example, Fig. 8 or Fig. 9 be used for the second compartment insulation detection device 180 the difference is that, by compartment anode
Bus M1 replaces with anode bus P1, and compartment negative electrode bus M2 is replaced with battery cathode bus P2, can be obtained as a result,
The insulation resistance of anode bus P1 and the insulation resistance of battery cathode bus P2.
Further, according to one embodiment of present invention, train control 30 is used to work as train insulation detection device 20
When detecting insulation fault, successively start the fault locator 130 in compartment 10, and pass through the fault locator in compartment
130 pairs of insulation faults position.
Wherein, according to one embodiment of present invention, train insulation detection device 20,170 and of compartment insulation detection device
Train control 30 can access the communication network of train, train insulation detection device 20, compartment insulation detection device 170 and column
Vehicle controller 30 can be communicated between each other by communication network.Alternatively, according to another embodiment of the invention, train is exhausted
Edge detection device 20 is communicated with the compartment insulation detection device 170 in each compartment 10, to obtain the insulation in each compartment 10
Situation, and only train insulation detection device 20 and train control 30 access the communication network of train, thus compartment Insulation monitoring
The information that device 170 generates is transmitted again after being judged by train insulation detection device 20.
Specifically, train insulation detection device 20 can its own detect entire train occur insulation fault or any one
Compartment insulation detection device 170, which detects, generates warning message, train Insulation monitoring when insulation fault occurs for corresponding compartment 10
Warning message can be sent to train control 30 by communication network by device 20, and train control 30 is receiving warning message
Later, successively start the fault locator 130 in compartment 10, and pass through 130 pairs of insulation events of fault locator in compartment
Barrier is positioned.
It should be understood that the compartment positive electrode bus M1 due to multiple compartments 10 connects together, the vehicle in multiple compartments 10
Compartment negative electrode bus M2 connects together, and also all connects together to the vehicle shell in multiple compartments 10, first opens in fault locator 130
The switching for closing K1 and second switch K2 can influence each other, and therefore, when carrying out fault location, train control 30 can successively start
Fault locator 130 in compartment 10, to ensure that it is dynamic that only one fault locator 130 of same time carries out switching
Make.
Specifically, train control 30 can successively start the fault locator 130 in compartment 10, i.e. control failure is fixed
First switch K1 and second switch the K2 closure of position device 130, after the fault locator 130 in any compartment starts, therefore
Barrier positioning device 130 can monitor first current sensor 110 in the compartment and/or the electric current of the second current sensor 160 detection
Value, if what the current value of the first current sensor 110 detection was detected greater than predetermined current threshold or the second current sensor 160
Current value is greater than predetermined current threshold, which then generates fault location information, and fault location information is sent out
Train control 30 is given, to can determine the specific location that insulation fault occurs.In addition, in other embodiments, any
After the fault locator 130 in compartment starts, compartment where the fault locator 130 in other compartments can also monitor respectively
First current sensor 110 and/or the current value of the second current sensor 160 detection, to determine it according to the current value of detection
The specific location of insulation fault occurs for his compartment.
In addition, according to one embodiment of present invention, train control 30 can also be used in when train insulation detection device 20
When detecting insulation fault, starts the fault locator 130 in any compartment 10 and close the failure in other compartments 10 and determine
Position device 130, and insulation fault is positioned by the fault locator 130 in compartment.
That is, train control 30 can control the event in any compartment in multiple compartments 10 when carrying out fault location
Hinder positioning device 130 to start, so that only one fault locator of same time carries out switching movement, in any compartment
Fault locator 130 start, the fault locator 130 in each compartment 10 it is detectable respectively where the first electric current in compartment
Sensor 110 and/or the current value of the second current sensor 160 detection, and in the current value of the first current sensor 110 detection
The current value detected greater than predetermined current threshold or the second current sensor 160 is greater than predetermined current threshold, generates fault location
Information, so that it is determined that the specific location of insulation fault occurs.
The Insulation Inspection System of train passes through fault locator 130, compartment insulation detection device 170 and column as a result,
Cooperation between vehicle insulation detection device 20 can position insulation fault, also, can avoid multiple compartments while carrying out event
Interference caused by barrier positioning, promotes the accuracy of fault location.
Finally, the embodiment of the present invention also proposed a kind of train, the Insulation Inspection System including above-described embodiment.
According to one embodiment of present invention, train can be straddle-type monorail train.
The train proposed according to embodiments of the present invention can accurately determine for example specific vehicle in position that insulation fault occurs
Compartment and specific load, improve the reliability and safety of train power supply.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (8)
1. a kind of Insulation Inspection System of train, which is characterized in that the train is powered by power grid, the power grid include power grid just
Pole bus and power grid negative electrode bus, the train include multiple compartments, train insulation detection device and train control, Mei Geche
Compartment includes:
Compartment positive electrode bus, the compartment positive electrode bus are connected with the power grid positive electrode bus；
Compartment negative electrode bus, the compartment negative electrode bus are connected with the power grid negative electrode bus；
The first current sensor being connected between the compartment positive electrode bus and compartment negative electrode bus；
The load being connected with first current sensor；
The fault locator being connected between the compartment positive electrode bus and the compartment negative electrode bus；
The train control, for successively starting described more when the train insulation detection device detects insulation fault
Fault locator in a compartment, and insulation fault is positioned by the fault locator in compartment.
2. the Insulation Inspection System of train as described in claim 1, which is characterized in that wherein, the fault locator is used
In the access for being respectively turned on the compartment positive electrode bus and the compartment negative electrode bus and the load to be carried out to the load
Negative insulation detection and positive Insulation monitoring.
3. the Insulation Inspection System of train as claimed in claim 2, which is characterized in that the fault locator is specifically wrapped
It includes:
First resistor, the first resistor are connected with the compartment positive electrode bus；
First switch, the first switch are connected with vehicle shell；
Second resistance, the second resistance are connected with the compartment negative electrode bus；
Second switch, the second switch are connected with the vehicle shell；
Controller, for controlling the first switch and the second switch.
4. the Insulation Inspection System of train as claimed in claim 3, which is characterized in that do not carry out Insulation monitoring in the train
When, the controller controls the first switch and the second switch disconnects；When the train carries out Insulation monitoring, institute
It states controller and controls the first switch closure, and control the second switch and disconnect, examined by first current sensor
The current value of survey carries out negative insulation detection, and the control second switch closure to the load, and controls described first
Switch disconnects, and the current value detected by first current sensor carries out positive Insulation monitoring to the load.
5. the Insulation Inspection System of train as described in claim 1, which is characterized in that the compartment further include:
The compartment insulation detection device being connected between the compartment positive electrode bus and the compartment negative electrode bus, for detecting
State the insulation situation between compartment positive electrode bus and the compartment negative electrode bus.
6. the Insulation Inspection System of train as described in claim 1, which is characterized in that the compartment further include:
Battery；
Non-isolation DC/DC module, the battery pass through the non-isolation DC/DC module and the compartment positive electrode bus and the vehicle
Compartment negative electrode bus is connected；
The second current sensor being connected between the battery and the non-isolation DC/DC module, wherein the controller exists
When controlling the first switch closure, and controlling second switch disconnection, pass through the electricity that second current sensor detects
Flow valuve carries out negative insulation detection to the battery, and is controlling the second switch closure, and control the first switch
When disconnection, the current value detected by second current sensor carries out positive Insulation monitoring to the battery.
7. the Insulation Inspection System of train as described in claim 1, which is characterized in that the compartment further include:
Battery；
Two-way isolation DC/DC module, the battery pass through the two-way isolation DC/DC module and the compartment positive electrode bus and institute
Compartment negative electrode bus is stated to be connected；
The third being connected between the compartment positive electrode bus, the compartment negative electrode bus and the two-way isolation DC/DC module
Current sensor, wherein the controller leads to when controlling the first switch closure, and controlling second switch disconnection
The current value for crossing the third current sensor detection carries out negative insulation detection to the battery, and in control described second
When closing the switch, and controlling first switch disconnection, the current value detected by the third current sensor is to the electricity
Pond carries out positive Insulation monitoring.
8. a kind of train, which is characterized in that including such as described in any item Insulation Inspection Systems of claim 1-7.
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| CN201710557825.7A CN109239562B (en) | 2017-07-10 | 2017-07-10 | Train and insulation detection system of train |
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|---|---|---|---|
| CN201710557825.7A CN109239562B (en) | 2017-07-10 | 2017-07-10 | Train and insulation detection system of train |
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| CN109239562B CN109239562B (en) | 2022-08-09 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111487558A (en) * | 2020-04-02 | 2020-08-04 | 中车青岛四方机车车辆股份有限公司 | Fault positioning device and method for high-voltage system of train |
| CN113328463A (en) * | 2021-07-09 | 2021-08-31 | 阳光电源股份有限公司 | Photovoltaic inverter system and insulation fault detection method thereof |
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