CN112130020A - High-voltage electrical appliance early warning method and device for rolling stock, medium and electronic equipment - Google Patents
High-voltage electrical appliance early warning method and device for rolling stock, medium and electronic equipment Download PDFInfo
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- G—PHYSICS
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- 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
- G01R31/005—Testing of electric installations on transport means
- G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
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- G—PHYSICS
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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Abstract
The invention provides a high-voltage electrical appliance early warning method for a rolling stock, which comprises the following steps: receiving monitoring parameters of the high-voltage electrical appliance; determining the state of the high-voltage electrical appliance according to the monitoring parameters of the high-voltage electrical appliance and a preset threshold value; and displaying the early warning information of the high-voltage electrical appliance according to the state of the high-voltage electrical appliance, so that locomotive operators can intervene in advance according to the early warning information, and the safety problem caused by major accidents of the high-voltage electrical appliance is prevented. The invention also provides a high-voltage electrical appliance early warning device, a medium and electronic equipment of the rolling stock.
Description
Technical Field
The invention relates to the technical field of early warning of high-voltage electric appliances of rolling stock, in particular to an early warning method, an early warning device, a medium and electronic equipment of the high-voltage electric appliances of the rolling stock.
Background
The high-voltage electrical apparatus is a key part of the rolling stock, the working state of the high-voltage electrical apparatus directly influences the driving state and the safety of the rolling stock, but in the running process of the rolling stock at present, high-voltage electrical apparatuses such as a high-voltage transformer and the like are in a monitoring blind area, the states of the high-voltage electrical apparatuses are unknown, and major accidents of pantograph-catenary are easily caused. Therefore, the invention provides the early warning method of the high-voltage electrical appliance of the rolling stock.
It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present invention and therefore may include information that does not constitute prior art known to a person of ordinary skill in the art.
Disclosure of Invention
The embodiment of the invention aims to provide an early warning method, an early warning device, a medium and electronic equipment for a high-voltage electrical appliance of a rolling stock, so that the state of the high-voltage electrical appliance can be determined at least to a certain extent in real time, and early warning information of the high-voltage electrical appliance is displayed according to the state of the high-voltage electrical appliance, so that locomotive operators can intervene in advance according to the early warning information, and the safety problem caused by major accidents of the high-voltage electrical appliance is prevented.
Additional features and advantages of the invention will be set forth in the detailed description which follows, or may be learned by practice of the invention.
According to a first aspect of the embodiments of the present invention, there is provided a method for early warning a high voltage electrical appliance of a rolling stock, including: receiving monitoring parameters of the high-voltage electrical appliance; determining the state of the high-voltage electrical appliance according to the monitoring parameters of the high-voltage electrical appliance and a preset threshold value; and displaying the early warning information of the high-voltage electrical appliance according to the state of the high-voltage electrical appliance.
In some embodiments of the invention, the high voltage electrical apparatus comprises an electromagnetic voltage transformer, and the monitored parameter of the high voltage electrical apparatus comprises any one or more of: primary side current of the high-voltage electric appliance, secondary side current of the high-voltage electric appliance, leakage current of the high-voltage electric appliance and excitation current of the high-voltage electric appliance.
In some embodiments of the invention, the warning information comprises any one or more of: the warning information comprises excessive heating warning information, excitation abnormity warning information, resonance warning information and insulation abnormity warning information.
In some embodiments of the present invention, determining the state of the high voltage electrical apparatus according to the monitoring parameter of the high voltage electrical apparatus and the preset threshold comprises: comparing the primary side current of the electromagnetic voltage transformer with a first preset threshold value, or/and comparing the secondary side current of the electromagnetic voltage transformer with a second preset threshold value, wherein the first preset threshold value is different from the second preset threshold value; when the primary side current of the electromagnetic voltage transformer is larger than or equal to the first preset threshold value, determining that the state of the electromagnetic voltage transformer is abnormal in heating; and/or when the secondary side current of the electromagnetic voltage transformer is larger than or equal to the second preset threshold, determining that the state of the electromagnetic voltage transformer is abnormal due to heating.
In some embodiments of the present invention, displaying the warning information of the high voltage electrical apparatus according to the state of the high voltage electrical apparatus includes: and displaying the excessive heating early warning information of the electromagnetic voltage transformer according to the abnormal heating state of the electromagnetic voltage transformer.
In some embodiments of the present invention, determining the state of the high voltage electrical apparatus according to the monitoring parameter of the high voltage electrical apparatus and the preset threshold comprises: comparing the excitation current of the electromagnetic voltage transformer with a third preset threshold value; and when the excitation current of the electromagnetic voltage transformer is greater than or equal to the third preset threshold value, determining that the state of the electromagnetic voltage transformer is abnormal in excitation.
In some embodiments of the present invention, displaying the warning information of the high voltage electrical apparatus according to the state of the high voltage electrical apparatus includes: and displaying the excitation abnormity early warning information of the electromagnetic voltage transformer according to the condition that the electromagnetic voltage transformer is in an excitation abnormity.
In some embodiments of the present invention, determining the state of the high voltage electrical apparatus according to the monitoring parameter of the high voltage electrical apparatus and the preset threshold comprises: comparing the frequency division harmonic current of the electromagnetic voltage transformer with a fourth preset threshold, or/and comparing the frequency multiplication harmonic current of the electromagnetic voltage transformer with a fifth preset threshold, wherein the fourth preset threshold is different from the fifth preset threshold, and the frequency division harmonic current and the frequency multiplication harmonic current are components in the primary side current or components in the secondary side current; when the frequency division harmonic current of the electromagnetic voltage transformer is greater than or equal to the fourth preset threshold value, determining that the state of the electromagnetic voltage transformer is abnormal resonance; or/and when the frequency multiplication harmonic current of the electromagnetic voltage transformer is greater than or equal to the fifth preset threshold, determining that the state of the electromagnetic voltage transformer is abnormal resonance.
In some embodiments of the present invention, displaying the warning information of the high voltage electrical apparatus according to the state of the high voltage electrical apparatus includes: and displaying the resonance early warning information of the electromagnetic voltage transformer according to the condition that the electromagnetic voltage transformer is in abnormal resonance.
In some embodiments of the present invention, determining the state of the high voltage electrical apparatus according to the monitoring parameter of the high voltage electrical apparatus and the preset threshold comprises: comparing the leakage current of the electromagnetic voltage transformer with a sixth preset threshold value; and when the leakage current of the electromagnetic voltage transformer is larger than or equal to the sixth preset threshold value, determining that the state of the electromagnetic voltage transformer is abnormal in insulation.
In some embodiments of the present invention, displaying the warning information of the high voltage electrical apparatus according to the state of the high voltage electrical apparatus includes: and displaying the insulation abnormity early warning information of the electromagnetic voltage transformer according to the condition that the electromagnetic voltage transformer is in an insulation abnormity state.
According to a second aspect of the embodiments of the present invention, there is provided a high voltage electric appliance early warning device for a rolling stock, including: the receiving module is used for receiving monitoring parameters of the high-voltage electrical appliance; the determining module is used for determining the state of the high-voltage electrical appliance according to the monitoring parameters of the high-voltage electrical appliance and a preset threshold value; and the display module is used for displaying the early warning information of the high-voltage electrical appliance according to the state of the high-voltage electrical appliance.
In some embodiments of the invention, the high voltage electrical apparatus comprises an electromagnetic voltage transformer, and the monitored parameter of the high voltage electrical apparatus comprises any one or more of: primary side current of the high-voltage electric appliance, secondary side current of the high-voltage electric appliance, leakage current of the high-voltage electric appliance and excitation current of the high-voltage electric appliance.
In some embodiments of the invention, the warning information comprises any one or more of: the warning information comprises excessive heating warning information, excitation abnormity warning information, resonance warning information and insulation abnormity warning information.
In some embodiments of the invention, the determining module is configured to: comparing the primary side current of the electromagnetic voltage transformer with a first preset threshold value, or/and comparing the secondary side current of the electromagnetic voltage transformer with a second preset threshold value, wherein the first preset threshold value is different from the second preset threshold value; when the primary side current of the electromagnetic voltage transformer is greater than or equal to the first preset threshold, determining that the state of the electromagnetic voltage transformer is abnormal in heating; and/or when the secondary side current of the electromagnetic voltage transformer is larger than or equal to the second preset threshold, the state of the electromagnetic voltage transformer is determined to be abnormal heating.
In some embodiments of the invention, the display module is configured to: and displaying the excessive heating early warning information of the electromagnetic voltage transformer according to the abnormal heating state of the electromagnetic voltage transformer.
In some embodiments of the invention, the determining module is further configured to: comparing the excitation current of the electromagnetic voltage transformer with a third preset threshold value; and when the excitation current of the electromagnetic voltage transformer is greater than or equal to the third preset threshold value, determining that the state of the electromagnetic voltage transformer is abnormal in excitation.
In some embodiments of the invention, the display module is further configured to: and displaying the excitation abnormity early warning information of the electromagnetic voltage transformer according to the condition that the electromagnetic voltage transformer is in an excitation abnormity.
In some embodiments of the invention, the determining module is further configured to: comparing the frequency division harmonic current of the electromagnetic voltage transformer with a fourth preset threshold, or/and comparing the frequency multiplication harmonic current of the electromagnetic voltage transformer with a fifth preset threshold, wherein the fourth preset threshold is different from the fifth preset threshold, and the frequency division harmonic current and the frequency multiplication harmonic current are components in the primary side current or components in the secondary side current; when the frequency division harmonic current of the electromagnetic voltage transformer is greater than or equal to the fourth preset threshold value, determining that the state of the electromagnetic voltage transformer is abnormal resonance; or/and when the frequency multiplication harmonic current of the electromagnetic voltage transformer is greater than or equal to the fifth preset threshold, determining that the state of the electromagnetic voltage transformer is abnormal resonance.
In some embodiments of the invention, the display module is further configured to: and displaying the resonance early warning information of the electromagnetic voltage transformer according to the condition that the electromagnetic voltage transformer is in abnormal resonance.
In some embodiments of the invention, the determining module is further configured to: comparing the leakage current of the electromagnetic voltage transformer with a sixth preset threshold value; and when the leakage current of the electromagnetic voltage transformer is larger than or equal to the sixth preset threshold value, determining that the state of the electromagnetic voltage transformer is abnormal in insulation.
In some embodiments of the invention, the display module is further configured to: and displaying the insulation abnormity early warning information of the electromagnetic voltage transformer according to the condition that the electromagnetic voltage transformer is in an insulation abnormity state.
According to a third aspect of embodiments of the present invention, there is provided an electronic apparatus, including: one or more processors; a storage device for storing one or more programs which, when executed by the one or more processors, cause the one or more processors to implement the method of high-voltage electric early warning of a rolling stock as described in the first aspect of the embodiment above.
According to a fourth aspect of the embodiments of the present invention, there is provided a computer readable medium having a computer program stored thereon, the program, when executed by a processor, implements the method for warning a high voltage electric appliance of a rolling stock as described in the first aspect of the embodiments above.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
according to the technical scheme provided by some embodiments of the invention, the monitoring parameters of the high-voltage electrical appliance are received, the state of the high-voltage electrical appliance is determined according to the monitoring parameters of the high-voltage electrical appliance and the preset threshold value, and the early warning information of the high-voltage electrical appliance is displayed according to the state of the high-voltage electrical appliance, so that locomotive operators can intervene in advance according to the early warning information, and the safety problem caused by major accidents of the high-voltage electrical appliance is prevented.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
fig. 1 is a schematic diagram illustrating an exemplary system architecture of a high-voltage electric early warning method of a rolling stock or a high-voltage electric early warning apparatus of a rolling stock to which an embodiment of the present invention may be applied;
FIG. 2 schematically illustrates a flow chart of a high voltage electrical early warning method of a rolling stock according to an embodiment of the invention;
FIG. 3 schematically illustrates a flow chart of a high voltage electrical early warning method of a rolling stock according to another embodiment of the invention;
FIG. 4 schematically illustrates a flow chart of a high voltage electrical early warning method of a rolling stock according to another embodiment of the invention;
FIG. 5 schematically illustrates a flow chart of a high voltage electrical early warning method of a rolling stock according to another embodiment of the invention;
FIG. 6 schematically illustrates a flow chart of a high voltage electrical early warning method of a rolling stock according to another embodiment of the invention;
FIG. 7 schematically illustrates a block diagram of a high voltage electrical early warning device of a rolling stock according to an embodiment of the present invention;
FIG. 8 illustrates a schematic structural diagram of a computer system suitable for use with the electronic device to implement an embodiment of the invention.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to provide a thorough understanding of embodiments of the invention. One skilled in the relevant art will recognize, however, that the invention may be practiced without one or more of the specific details, or with other methods, components, devices, steps, and so forth. In other instances, well-known methods, devices, implementations or operations have not been shown or described in detail to avoid obscuring aspects of the invention.
The block diagrams shown in the figures are functional entities only and do not necessarily correspond to physically separate entities. I.e. these functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor means and/or microcontroller means.
The flow charts shown in the drawings are merely illustrative and do not necessarily include all of the contents and operations/steps, nor do they necessarily have to be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.
Fig. 1 is a schematic diagram illustrating an exemplary system architecture of a high-voltage electric early warning method of a rolling stock or a high-voltage electric early warning apparatus of a rolling stock to which an embodiment of the present invention may be applied.
As shown in fig. 1, the system architecture 100 may include a high voltage electrical monitoring device 101, a high voltage electrical 102 of a rolling stock, a network 103, and a host computer 104. L1 and L2 are loads in the high-voltage apparatus, and CT1, CT2, CT3 and CT4 are zero-flux current transformers in the high-voltage apparatus monitoring device 101. In the present embodiment, the zero-flux current transformers CT1, CT2, CT3 and CT4 in the high-voltage apparatus monitoring device 101 are connected to the high-voltage apparatus 102 of the rolling stock, so that the high-voltage apparatus 102 of the rolling stock can be monitored in real time through the zero-flux current transformers CT1, CT2, CT3 and CT4, and monitoring parameters of the high-voltage apparatus 102 of the rolling stock can be obtained in real time, for example, the monitoring parameters of the high-voltage apparatus 102 of the rolling stock can be a primary side current of the high-voltage apparatus, a secondary side current of the high-voltage apparatus, a leakage current of the high-voltage apparatus, an excitation current of the high-voltage apparatus, and the. In this embodiment, the high voltage apparatus 102 may be an electromagnetic voltage transformer, and the high voltage apparatus monitoring device 101 may be an electromagnetic voltage transformer detection device.
Referring to fig. 1, a zero flux current transformer CT1 is connected to the high-voltage side ground of the high-voltage electrical apparatus 102 for monitoring and acquiring the primary side current of the high-voltage electrical apparatus 102; a zero-flux current transformer CT2 is connected to the common ground line of the secondary winding of the high-voltage electrical apparatus 102, and is used for monitoring and acquiring leakage current (i.e. primary-to-secondary insulation leakage current) of the high-voltage electrical apparatus 102; a zero-flux current transformer CT3 is connected to a return line of a first winding load L1 on the low-voltage side of the high-voltage electrical apparatus 102 and is used for monitoring and acquiring the secondary side current of the high-voltage electrical apparatus 102 (namely the load current of a first output winding of the electromagnetic voltage transformer); a zero-flux current transformer CT4 is connected to a second winding load return line on the low-voltage side of the high-voltage electrical apparatus 102, and is used for monitoring and acquiring a secondary side current of the high-voltage electrical apparatus 102 (i.e. a second output winding load current of the electromagnetic voltage transformer); the voltage output by any winding on the low-voltage side is connected to the high-voltage electrical apparatus monitoring device 101, a voltage signal conversion module is arranged in the high-voltage electrical apparatus monitoring device 101, signals output by the high-voltage electrical apparatus 102 are converted into appropriate electric signals for the monitoring device to measure, and therefore sampling of the voltage of the contact network is achieved. Each sampling signal is connected to the high-voltage electric appliance monitoring device 101, and after conversion, amplification and operation processing, the frequency-division harmonic current and the frequency-multiplication harmonic current in the current are calculated. The frequency-divided harmonic current and the frequency-multiplied harmonic current are components of the primary side current of the high-voltage electrical apparatus 102 and components of the secondary side current of the high-voltage electrical apparatus 102. In the present embodiment, the high-voltage apparatus monitoring device 101 can calculate the excitation current of the high-voltage apparatus 102 according to the primary side current of the high-voltage apparatus 102 and the secondary side current of the high-voltage apparatus 102.
Fig. 2 schematically shows a flow chart of a high voltage electric early warning method of a rolling stock according to an embodiment of the invention.
As shown in fig. 2, the method for warning a high voltage apparatus of a rolling stock may include steps S210 to S230.
In step S210, a monitoring parameter of the high voltage electrical apparatus is received.
In step S220, the state of the high voltage apparatus is determined according to the monitoring parameter of the high voltage apparatus and a preset threshold.
In step S230, the early warning information of the high voltage apparatus is displayed according to the state of the high voltage apparatus.
The method can receive the monitoring parameters of the high-voltage electric appliance, determine the state of the high-voltage electric appliance according to the monitoring parameters of the high-voltage electric appliance and the preset threshold value, and display the early warning information of the high-voltage electric appliance according to the state of the high-voltage electric appliance, so that locomotive operators can intervene in advance according to the early warning information, and safety problems caused by major accidents of the high-voltage electric appliance are prevented.
In an embodiment of the present invention, the high-voltage electrical apparatus includes an electromagnetic voltage transformer, and the monitored parameter of the high-voltage electrical apparatus includes any one or more of the following: primary side current of the high-voltage electric appliance, secondary side current of the high-voltage electric appliance, leakage current of the high-voltage electric appliance and excitation current of the high-voltage electric appliance. In addition, in the present embodiment, the high-voltage electrical appliance may be a grid-side high-voltage electrical appliance of a rolling stock.
In one embodiment of the invention, the primary side current of the high-voltage electric appliance, the secondary side current of the high-voltage electric appliance, the leakage current of the high-voltage electric appliance and the excitation current of the high-voltage electric appliance are stored in real time, so that the corresponding relation between the monitoring parameters of the high-voltage electric appliance and the running state of the high-voltage electric appliance can be established, a database model is formed, the aim of intelligent operation and maintenance can be achieved on the premise of ensuring the reliable running of the high-voltage electric appliance, and the change trend of the running state of the high-voltage electric appliance can be inquire.
In an embodiment of the present invention, the warning information includes any one or more of the following items: the warning information comprises excessive heating warning information, excitation abnormity warning information, resonance warning information and insulation abnormity warning information.
Fig. 3 schematically shows a flow chart of a high-voltage electric early warning method of a rolling stock according to another embodiment of the present invention.
As shown in fig. 3, the step S220 may include steps S310 and S320.
In step S310, the primary side current of the electromagnetic voltage transformer is compared with a first preset threshold, or/and the secondary side current of the electromagnetic voltage transformer is compared with a second preset threshold.
In step S320, when the primary side current of the electromagnetic voltage transformer is greater than or equal to the first preset threshold, determining that the state of the electromagnetic voltage transformer is abnormal heat generation; and/or when the secondary side current of the electromagnetic voltage transformer is larger than or equal to the second preset threshold, determining that the state of the electromagnetic voltage transformer is abnormal due to heating.
The method can accurately and quickly determine whether the high-voltage electrical apparatus of the rolling stock has abnormal heating or not by comparing the primary side current of the electromagnetic voltage transformer with a first preset threshold value and/or comparing the secondary side current of the electromagnetic voltage transformer with a second preset threshold value, for example, when the primary side current of the electromagnetic voltage transformer is greater than or equal to the first preset threshold value, the state of the electromagnetic voltage transformer is determined to be abnormal heating, and/or when the secondary side current of the electromagnetic voltage transformer is greater than or equal to the second preset threshold value, the state of the electromagnetic voltage transformer is determined to be abnormal heating.
In one embodiment of the present invention, displaying the warning information of the high-voltage electrical apparatus according to the state of the high-voltage electrical apparatus includes: the warning information of excessive heating of the electromagnetic voltage transformer is displayed according to the abnormal heating state of the electromagnetic voltage transformer, so that locomotive operators can intervene in advance according to the warning information of excessive heating, and the safety problem caused by major accidents of high-voltage electrical appliances is prevented.
At present, most locomotives adopt electromagnetic high-voltage transformers, the electromagnetic voltage transformers are exploded and damaged, most of the reasons are that heat is generated due to internal overcurrent, and finally the electromagnetic voltage transformers are thermally collapsed and exploded. By the method, serious accidents caused by heating can be effectively avoided.
In an embodiment of the invention, a laboratory test platform is set up, voltages of contact networks with different frequencies are simulated, a new high-voltage electrical appliance and high-voltage electrical appliances operating in different years are tested, and preset thresholds are set according to test results, wherein the preset thresholds can include a first preset threshold, a second preset threshold, a third preset threshold, a fourth preset threshold, a fifth preset threshold and a sixth preset threshold. The first preset threshold, the second preset threshold, the third preset threshold, the fourth preset threshold, the fifth preset threshold and the sixth preset threshold are different from each other.
In an embodiment of the present invention, the primary side current of the electromagnetic voltage transformer is set as I1The secondary side current of the electromagnetic voltage transformer is I2The first preset threshold is C1The second preset threshold is C2. For example, in I1≥C1And meanwhile, determining that the state of the electromagnetic voltage transformer is abnormal heating, and displaying the excessive heating early warning information of the electromagnetic voltage transformer. As another example, in I2≥C2And meanwhile, determining that the state of the electromagnetic voltage transformer is abnormal heating, and displaying the excessive heating early warning information of the electromagnetic voltage transformer. As another example, in I1≥C1And I2≥C2And meanwhile, determining that the state of the electromagnetic voltage transformer is abnormal heating, and displaying the excessive heating early warning information of the electromagnetic voltage transformer.
Fig. 4 schematically shows a flow chart of a high-voltage electric early warning method of a rolling stock according to another embodiment of the present invention.
As shown in fig. 4, the step S220 may further include a step S410 and a step S420.
In step S410, the excitation current of the electromagnetic voltage transformer is compared with a third preset threshold.
In step S420, when the excitation current of the electromagnetic voltage transformer is greater than or equal to the third preset threshold, it is determined that the state of the electromagnetic voltage transformer is an excitation abnormality.
The method can accurately and quickly determine whether the high-voltage electrical appliance of the rolling stock has excitation abnormality or not by comparing the excitation current of the electromagnetic voltage transformer with a third preset threshold, for example, when the excitation current of the electromagnetic voltage transformer is greater than or equal to the third preset threshold, the state of the electromagnetic voltage transformer is determined to be the excitation abnormality.
In one embodiment of the present invention, displaying the warning information of the high-voltage electrical apparatus according to the state of the high-voltage electrical apparatus includes: according to the state of the electromagnetic voltage transformer as excitation abnormity, the excitation abnormity early warning information of the electromagnetic voltage transformer is displayed, so that locomotive operators can intervene in advance according to the excitation abnormity early warning information, and the safety problem caused by major accidents of high-voltage electrical appliances is prevented
In one embodiment of the present invention, the excitation current of the electromagnetic voltage transformer is determined based on a primary side current of the electromagnetic voltage transformer and a secondary side current of the electromagnetic voltage transformer. For example, let the excitation current I of the potential transformermThe third preset threshold is C3In Im≥C3And meanwhile, determining that the state of the electromagnetic voltage transformer is abnormal excitation, and displaying the early warning information of the abnormal excitation of the electromagnetic voltage transformer.
Fig. 5 schematically shows a flow chart of a high-voltage electric early warning method of a rolling stock according to another embodiment of the present invention.
As shown in fig. 5, the step S220 may further include a step S510 and a step S520.
In step S510, the frequency-divided harmonic current of the electromagnetic voltage transformer is compared with a fourth preset threshold, or/and the frequency-multiplied harmonic current of the electromagnetic voltage transformer is compared with the fifth preset threshold.
In step S520, when the frequency-divided harmonic current of the electromagnetic voltage transformer is greater than or equal to the fourth preset threshold, determining that the state of the electromagnetic voltage transformer is abnormal resonance; or/and when the frequency multiplication harmonic current of the electromagnetic voltage transformer is greater than or equal to the fifth preset threshold, determining that the state of the electromagnetic voltage transformer is abnormal resonance.
In the method, after the excitation abnormality early warning information of the electromagnetic voltage transformer is displayed, whether the high-voltage electrical apparatus of the rolling stock has resonance abnormality or not can be accurately and quickly determined by comparing the frequency division harmonic current of the electromagnetic voltage transformer with a fourth preset threshold value and/or comparing the frequency multiplication harmonic current of the electromagnetic voltage transformer with a fifth preset threshold value, for example, when the frequency division harmonic current of the electromagnetic voltage transformer is greater than or equal to the fourth preset threshold value, the state of the electromagnetic voltage transformer is determined to be resonance abnormality, and/or when the frequency multiplication harmonic current of the electromagnetic voltage transformer is greater than or equal to the fifth preset threshold value, the state of the electromagnetic voltage transformer is determined to be resonance abnormality.
In an embodiment of the invention, the fourth preset threshold is different from the fifth preset threshold, and the frequency-divided harmonic current and the frequency-multiplied harmonic current are components in the primary-side current or components in the secondary-side current.
In one embodiment of the present invention, displaying the warning information of the high-voltage electrical apparatus according to the state of the high-voltage electrical apparatus includes: the resonance early warning information of the electromagnetic voltage transformer is displayed according to the abnormal resonance state of the electromagnetic voltage transformer, so that locomotive operators can intervene in advance according to the resonance early warning information, and the safety problem caused by major accidents of high-voltage electrical appliances is prevented.
In one embodiment of the invention, the frequency division harmonic current of the electromagnetic voltage transformer is set as I1 component ofThe frequency multiplication harmonic current of the electromagnetic voltage transformer is I2 component ofThe fourth preset threshold is C4The fifth preset threshold is C5. For example, in I1 component of≥C4And meanwhile, determining that the state of the electromagnetic voltage transformer is abnormal resonance, and displaying resonance early warning information of the electromagnetic voltage transformer. As another example, in I2 component of≥C5And meanwhile, determining that the state of the electromagnetic voltage transformer is abnormal resonance, and displaying resonance early warning information of the electromagnetic voltage transformer. As another example, in I1 component of≥C4And I2 component of≥C5And meanwhile, determining that the state of the electromagnetic voltage transformer is abnormal resonance, and displaying resonance early warning information of the electromagnetic voltage transformer. In the embodiment, the frequency-divided harmonic current of the electromagnetic voltage transformerCan also be I2 component ofThe frequency multiplication harmonic current of the electromagnetic voltage transformer is I1 component of。
Fig. 6 schematically shows a flow chart of a high-voltage electric early warning method of a rolling stock according to another embodiment of the present invention.
As shown in fig. 6, the step S220 may further include a step S610 and a step S620.
In step S610, the leakage current of the electromagnetic voltage transformer is compared with a fifth preset threshold.
In step S620, when the leakage current of the electromagnetic voltage transformer is greater than or equal to the sixth preset threshold, it is determined that the state of the electromagnetic voltage transformer is abnormal for insulation.
According to the method, whether the high-voltage electrical appliance of the rolling stock is abnormal in insulation or not can be accurately and quickly determined by comparing the leakage current of the electromagnetic voltage transformer with a sixth preset threshold value, for example, when the leakage current of the electromagnetic voltage transformer is larger than or equal to a fifth preset threshold value, the state of the electromagnetic voltage transformer is determined to be abnormal in insulation.
In one embodiment of the present invention, displaying the warning information of the high-voltage electrical apparatus according to the state of the high-voltage electrical apparatus includes: the method has the advantages that the insulation abnormity early warning information of the electromagnetic voltage transformer is displayed according to the state of the electromagnetic voltage transformer, so that locomotive operators can intervene in advance according to the insulation abnormity early warning information, and the safety problem caused by major accidents of high-voltage electrical appliances is prevented.
In one embodiment of the invention, the exciting current I of the voltage transformer is setLThe sixth preset threshold is C6In IL≥C6And when the state of the electromagnetic voltage transformer is determined to be abnormal insulation, displaying the early warning information of the abnormal insulation of the electromagnetic voltage transformer, namely the early warning information of the primary abnormal insulation of the secondary voltage transformer.
Fig. 7 schematically shows a block diagram of a high voltage electric early warning device of a rolling stock according to an embodiment of the present invention.
As shown in fig. 7, the high voltage electric early warning apparatus 200 of the rolling stock includes a receiving module 210, a determining module 220, and a displaying module 230.
Specifically, the receiving module 210 is configured to receive a monitoring parameter of the high voltage electrical apparatus.
The determining module 220 is configured to determine the state of the high-voltage electrical apparatus according to the monitoring parameter of the high-voltage electrical apparatus and a preset threshold.
And the display module 230 is configured to display the early warning information of the high-voltage electrical apparatus according to the state of the high-voltage electrical apparatus.
The high-voltage electric appliance early warning device 200 of the rolling stock can receive monitoring parameters of a high-voltage electric appliance, determine the state of the high-voltage electric appliance according to the monitoring parameters of the high-voltage electric appliance and a preset threshold value, and display early warning information of the high-voltage electric appliance according to the state of the high-voltage electric appliance, so that locomotive operators can intervene in advance according to the early warning information, and safety problems caused by major accidents of the high-voltage electric appliance are prevented.
According to the embodiment of the invention, the high-voltage electric appliance early warning device 200 of the rolling stock can be used for realizing the high-voltage electric appliance early warning method of the rolling stock described in the embodiment of fig. 2 to 6.
In some embodiments of the present invention, the determining module 220 is configured to: comparing the primary side current of the electromagnetic voltage transformer with a first preset threshold value, or/and comparing the secondary side current of the electromagnetic voltage transformer with a second preset threshold value; when the primary side current of the electromagnetic voltage transformer is greater than or equal to the first preset threshold, determining that the state of the electromagnetic voltage transformer is abnormal in heating; and/or when the secondary side current of the electromagnetic voltage transformer is larger than or equal to the second preset threshold, the state of the electromagnetic voltage transformer is determined to be abnormal heating.
In some embodiments of the present invention, the presentation module 230 is configured to: and displaying the excessive heating early warning information of the electromagnetic voltage transformer according to the abnormal heating state of the electromagnetic voltage transformer.
In some embodiments of the present invention, the determining module 220 is further configured to: comparing the excitation current of the electromagnetic voltage transformer with a third preset threshold value; and when the excitation current of the electromagnetic voltage transformer is greater than or equal to the fourth preset threshold value, determining that the state of the electromagnetic voltage transformer is abnormal in excitation.
In some embodiments of the present invention, the presentation module 230 is further configured to: and displaying the excitation abnormity early warning information of the electromagnetic voltage transformer according to the condition that the electromagnetic voltage transformer is in an excitation abnormity.
In some embodiments of the present invention, the determining module 220 is further configured to: comparing the frequency division harmonic current of the electromagnetic voltage transformer with a fourth preset threshold, or/and comparing the frequency multiplication harmonic current of the electromagnetic voltage transformer with a fifth preset threshold, wherein the fourth preset threshold is different from the fifth preset threshold, and the frequency division harmonic current and the frequency multiplication harmonic current are components in the primary side current or components in the secondary side current; when the frequency division harmonic current of the electromagnetic voltage transformer is greater than or equal to the fourth preset threshold value, determining that the state of the electromagnetic voltage transformer is abnormal resonance; or/and when the frequency multiplication harmonic current of the electromagnetic voltage transformer is greater than or equal to the fifth preset threshold, determining that the state of the electromagnetic voltage transformer is abnormal resonance.
In some embodiments of the present invention, the presentation module 230 is further configured to: and displaying the resonance early warning information of the electromagnetic voltage transformer according to the condition that the electromagnetic voltage transformer is in abnormal resonance.
In some embodiments of the present invention, the determining module 220 is further configured to: comparing the leakage current of the electromagnetic voltage transformer with a sixth preset threshold value; and when the leakage current of the electromagnetic voltage transformer is larger than or equal to the sixth preset threshold value, determining that the state of the electromagnetic voltage transformer is abnormal in insulation.
In some embodiments of the present invention, the presentation module 230 is further configured to: and displaying the insulation abnormity early warning information of the electromagnetic voltage transformer according to the condition that the electromagnetic voltage transformer is in an insulation abnormity state.
For details not disclosed in the embodiment of the apparatus of the present invention, please refer to the embodiment of the high voltage early warning method of the rolling stock of the present invention for the details not disclosed in the embodiment of the apparatus of the present invention, because each module of the high voltage early warning apparatus 200 of the rolling stock of the present invention can be used to implement the steps of the above-mentioned embodiment of the high voltage early warning method of the rolling stock of fig. 2 to 7.
It is understood that the receiving module 210, the determining module 220, and the presenting module 230 may be combined in one module to be implemented, or any one of them may be split into a plurality of modules. Alternatively, at least part of the functionality of one or more of these modules may be combined with at least part of the functionality of the other modules and implemented in one module. According to an embodiment of the present invention, at least one of the receiving module 210, the determining module 220, and the presenting module 230 may be implemented at least in part as a hardware circuit, such as a Field Programmable Gate Array (FPGA), a Programmable Logic Array (PLA), a system on a chip, a system on a substrate, a system on a package, an Application Specific Integrated Circuit (ASIC), or in hardware or firmware in any other reasonable manner of integrating or packaging a circuit, or in a suitable combination of three implementations of software, hardware, and firmware. Alternatively, at least one of the receiving module 210, the determining module 220 and the presenting module 230 may be at least partially implemented as a computer program module, which, when executed by a computer, may perform the functions of the respective module.
Referring now to FIG. 8, shown is a block diagram of a computer system 300 suitable for use with the electronic device implementing an embodiment of the present invention. The computer system 300 of the electronic device shown in fig. 8 is only an example, and should not bring any limitation to the functions and the scope of use of the embodiments of the present invention.
As shown in fig. 8, the computer system 300 includes a Central Processing Unit (CPU)301 that can perform various appropriate actions and processes in accordance with a program stored in a Read Only Memory (ROM)302 or a program loaded from a storage section 308 into a Random Access Memory (RAM) 303. In the RAM 303, various programs and data necessary for system operation are also stored. The CPU 301, ROM 302, and RAM 303 are connected to each other via a bus 304. An input/output (I/O) interface 305 is also connected to bus 304.
The following components are connected to the I/O interface 305: an input portion 306 including a keyboard, a mouse, and the like; an output section 307 including a display such as a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and the like, and a speaker; a storage section 308 including a hard disk and the like; and a communication section 309 including a network interface card such as a LAN card, a modem, or the like. The communication section 309 performs communication processing via a network such as the internet. A drive 310 is also connected to the I/O interface 305 as needed. A removable medium 311 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is mounted on the drive 310 as necessary, so that a computer program read out therefrom is mounted into the storage section 308 as necessary.
In particular, according to an embodiment of the present invention, the processes described above with reference to the flowcharts may be implemented as computer software programs. For example, embodiments of the invention include a computer program product comprising a computer program embodied on a computer-readable medium, the computer program comprising program code for performing the method illustrated in the flow chart. In such an embodiment, the computer program may be downloaded and installed from a network through the communication section 309, and/or installed from the removable medium 311. The above-described functions defined in the system of the present application are executed when the computer program is executed by the Central Processing Unit (CPU) 301.
It should be noted that the computer readable medium shown in the present invention can be a computer readable signal medium or a computer readable storage medium or any combination of the two. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples of the computer readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present invention, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In the present invention, however, a computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, fiber optic cable, RF, etc., or any suitable combination of the foregoing.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams or flowchart illustration, and combinations of blocks in the block diagrams or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The units described in the embodiments of the present invention may be implemented by software, or may be implemented by hardware, and the described units may also be disposed in a processor. Wherein the names of the elements do not in some way constitute a limitation on the elements themselves.
As another aspect, the present application also provides a computer-readable medium, which may be contained in the electronic device described in the above embodiments; or may exist separately without being assembled into the electronic device. The computer readable medium carries one or more programs which, when executed by an electronic device, cause the electronic device to implement the method for warning a high voltage electrical appliance of a rolling stock as described in the above embodiments.
For example, the electronic device may implement the following as shown in fig. 2: in step S210, a monitoring parameter of the high voltage electrical apparatus is received. In step S220, the state of the high voltage apparatus is determined according to the monitoring parameter of the high voltage apparatus and a preset threshold. In step S230, the early warning information of the high voltage apparatus is displayed according to the state of the high voltage apparatus.
It should be noted that although in the above detailed description several modules or units of the device for action execution are mentioned, such a division is not mandatory. Indeed, the features and functionality of two or more modules or units described above may be embodied in one module or unit, according to embodiments of the invention. Conversely, the features and functions of one module or unit described above may be further divided into embodiments by a plurality of modules or units.
Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein may be implemented by software, or by software in combination with necessary hardware. Therefore, the technical solution according to the embodiment of the present invention can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a usb disk, a removable hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which can be a personal computer, a server, a touch terminal, or a network device, etc.) to execute the method according to the embodiment of the present invention.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (14)
1. A high-voltage electric appliance early warning method for a rolling stock is characterized by comprising the following steps:
receiving monitoring parameters of the high-voltage electrical appliance;
determining the state of the high-voltage electrical appliance according to the monitoring parameters of the high-voltage electrical appliance and a preset threshold value;
and displaying the early warning information of the high-voltage electrical appliance according to the state of the high-voltage electrical appliance.
2. The method of claim 1, wherein the high voltage electrical appliance comprises an electromagnetic voltage transformer and the monitored parameters of the high voltage electrical appliance comprise any one or more of: primary side current of the high-voltage electric appliance, secondary side current of the high-voltage electric appliance, leakage current of the high-voltage electric appliance and excitation current of the high-voltage electric appliance.
3. The method of claim 2, wherein the pre-warning information comprises any one or more of: the warning information comprises excessive heating warning information, excitation abnormity warning information, resonance warning information and insulation abnormity warning information.
4. The method of claim 3, wherein determining the state of the high voltage electrical appliance from the monitored parameters of the high voltage electrical appliance and the preset threshold comprises:
comparing the primary side current of the electromagnetic voltage transformer with a first preset threshold value, or/and comparing the secondary side current of the electromagnetic voltage transformer with a second preset threshold value, wherein the first preset threshold value is different from the second preset threshold value;
when the primary side current of the electromagnetic voltage transformer is larger than or equal to the first preset threshold value, determining that the state of the electromagnetic voltage transformer is abnormal in heating; and/or when the secondary side current of the electromagnetic voltage transformer is larger than or equal to the second preset threshold, determining that the state of the electromagnetic voltage transformer is abnormal due to heating.
5. The method of claim 4, wherein displaying the early warning information of the high-voltage electrical apparatus according to the state of the high-voltage electrical apparatus comprises:
and displaying the excessive heating early warning information of the electromagnetic voltage transformer according to the abnormal heating state of the electromagnetic voltage transformer.
6. The method of claim 3, wherein determining the state of the high voltage electrical appliance from the monitored parameters of the high voltage electrical appliance and the preset threshold comprises:
comparing the excitation current of the electromagnetic voltage transformer with a third preset threshold value;
and when the excitation current of the electromagnetic voltage transformer is greater than or equal to the third preset threshold value, determining that the state of the electromagnetic voltage transformer is abnormal in excitation.
7. The method of claim 6, wherein displaying the early warning information of the high-voltage electrical apparatus according to the state of the high-voltage electrical apparatus comprises:
and displaying the excitation abnormity early warning information of the electromagnetic voltage transformer according to the condition that the electromagnetic voltage transformer is in an excitation abnormity.
8. The method of claim 7, wherein determining the state of the high voltage electrical appliance from the monitored parameters of the high voltage electrical appliance and the preset threshold comprises:
comparing the frequency division harmonic current of the electromagnetic voltage transformer with a fourth preset threshold, or/and comparing the frequency multiplication harmonic current of the electromagnetic voltage transformer with a fifth preset threshold, wherein the fourth preset threshold is different from the fifth preset threshold, and the frequency division harmonic current and the frequency multiplication harmonic current are components in the primary side current or components in the secondary side current;
when the frequency division harmonic current of the electromagnetic voltage transformer is greater than or equal to the fourth preset threshold value, determining that the state of the electromagnetic voltage transformer is abnormal resonance; or/and when the frequency multiplication harmonic current of the electromagnetic voltage transformer is greater than or equal to the fifth preset threshold, determining that the state of the electromagnetic voltage transformer is abnormal resonance.
9. The method of claim 8, wherein displaying the early warning information of the high-voltage electrical apparatus according to the state of the high-voltage electrical apparatus comprises:
and displaying the resonance early warning information of the electromagnetic voltage transformer according to the condition that the electromagnetic voltage transformer is in abnormal resonance.
10. The method of claim 3, wherein determining the state of the high voltage electrical appliance from the monitored parameters of the high voltage electrical appliance and the preset threshold comprises:
comparing the leakage current of the electromagnetic voltage transformer with a sixth preset threshold value;
and when the leakage current of the electromagnetic voltage transformer is larger than or equal to the sixth preset threshold value, determining that the state of the electromagnetic voltage transformer is abnormal in insulation.
11. The method of claim 10, wherein displaying the early warning information of the high voltage electrical appliance according to the state of the high voltage electrical appliance comprises:
and displaying the insulation abnormity early warning information of the electromagnetic voltage transformer according to the condition that the electromagnetic voltage transformer is in an insulation abnormity state.
12. A high-voltage electric appliance early warning device of a rolling stock is characterized by comprising:
the receiving module is used for receiving monitoring parameters of the high-voltage electrical appliance;
the determining module is used for determining the state of the high-voltage electrical appliance according to the monitoring parameters of the high-voltage electrical appliance and a preset threshold value;
and the display module is used for displaying the early warning information of the high-voltage electrical appliance according to the state of the high-voltage electrical appliance.
13. An electronic device, comprising:
one or more processors; and
storage means for storing one or more programs which, when executed by the one or more processors, cause the one or more processors to carry out a method according to any one of claims 1 to 11.
14. A computer-readable medium, on which a computer program is stored, which program, when being executed by a processor, is adapted to carry out the method according to any one of claims 1 to 11.
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| CN202011015093.7A CN112130020A (en) | 2020-09-24 | 2020-09-24 | High-voltage electrical appliance early warning method and device for rolling stock, medium and electronic equipment |
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| CN202011015093.7A CN112130020A (en) | 2020-09-24 | 2020-09-24 | High-voltage electrical appliance early warning method and device for rolling stock, medium and electronic equipment |
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