CN115560805A - Drainage monitoring method, drainage monitoring device, drainage monitoring equipment and readable storage medium - Google Patents
Drainage monitoring method, drainage monitoring device, drainage monitoring equipment and readable storage medium Download PDFInfo
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- CN115560805A CN115560805A CN202211201777.5A CN202211201777A CN115560805A CN 115560805 A CN115560805 A CN 115560805A CN 202211201777 A CN202211201777 A CN 202211201777A CN 115560805 A CN115560805 A CN 115560805A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 42
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- 238000004590 computer program Methods 0.000 description 19
- 238000010586 diagram Methods 0.000 description 10
- 229910000746 Structural steel Inorganic materials 0.000 description 7
- 230000008569 process Effects 0.000 description 7
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
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- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M5/00—Arrangements along running rails or at joints thereof for current conduction or insulation, e.g. safety devices for reducing earth currents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M5/00—Arrangements along running rails or at joints thereof for current conduction or insulation, e.g. safety devices for reducing earth currents
- B60M5/02—Means for reducing potential difference between rail and adjacent ground
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Abstract
The invention discloses a drainage monitoring method, a drainage monitoring device, drainage monitoring equipment and a readable storage medium, and relates to the technical field of drainage protection, wherein the drainage monitoring method comprises the following steps: step S10, acquiring a current polarization potential value of the drainage network according to a preset time period; s20, judging whether the current polarization potential value of the drainage network is larger than a preset first potential threshold value or not; step S30, if the current polarization potential value of the drainage network is larger than a preset first potential threshold value, obtaining the current resistance value of the track; step S40, judging whether the current resistance value of the track is smaller than a preset resistance threshold value; and S50, if the current resistance value of the track is smaller than a preset resistance threshold value, controlling the drainage switch to act so as to introduce stray current of the drainage network into the negative bus. The invention combines the current resistance of the track to carry out judgment and control, avoids the high-frequency action of the drainage switch and improves the action accuracy of the drainage switch.
Description
Technical Field
The invention relates to the technical field of drainage protection, in particular to a drainage monitoring method, a drainage monitoring device, drainage monitoring equipment and a readable storage medium.
Background
Urban rail transit has become an irreplaceable vehicle in cities at present, and therefore rapid development is achieved. The subway traction power supply system mostly adopts a DC750V/DC1500V power supply mode, and under an ideal condition, traction current starts from the positive pole of a traction substation and returns to the negative pole of the traction substation through a contact net, an electric locomotive and a track. Due to poor or incomplete insulation between the rail and the ground, the current flowing through the rail cannot flow back to the negative electrode of the traction substation through the rail, a part of the current leaks into the ground and then flows back to the substation, and the current leaking into the ground is stray current. Stray currents in subways are harmful currents that cause different levels of damage to electrical equipment, tunnels, structural steel of the track bed and nearby metal pipelines in the subway. If the current is not well protected, the device and the cable can be electrochemically corroded.
In the prior art, if the polarization potential value of the electrical equipment or the structural steel reaches the potential threshold value, the drainage switch is controlled to act, and the stray current of the electrical equipment or the structural steel is introduced into the negative bus. However, in this way, the operation frequency of the drainage switch is high, and some abnormal conditions may increase the measured polarization potential value of the electrical equipment or the structural steel, which may cause the drainage switch to malfunction.
Disclosure of Invention
The embodiment of the invention provides a drainage monitoring method, a drainage monitoring device, drainage monitoring equipment and a readable storage medium, and aims to solve the technical problems that drainage switches in the existing drainage monitoring method in the related art are more in action frequency and insufficient in action accuracy.
In a first aspect, a method for monitoring drainage is provided, comprising the steps of:
acquiring a current polarization potential value of the drainage network according to a preset time period;
judging whether the current polarization potential value of the drainage network is larger than a preset first potential threshold value or not;
if the current polarization potential value of the drainage network is larger than a preset first potential threshold value, obtaining the current resistance value of the track;
judging whether the current resistance value of the track is smaller than a preset resistance threshold value or not;
and if the current resistance value of the track is smaller than the preset resistance threshold value, controlling the drainage switch to act so as to introduce the stray current of the drainage network into the negative bus.
In some embodiments, before the step of determining whether the current polarization potential value of the drainage network is greater than the preset first potential threshold, the method includes:
judging whether the polarization potential value of the drainage network is greater than a preset second potential threshold value or not; wherein the second potential threshold is greater than the preset first potential threshold;
if yes, the drainage switch is directly controlled to act so as to lead stray current of the drainage network into the negative bus.
In some embodiments, the step of controlling the drainage switch to act to introduce stray currents of the drainage network into the negative bus comprises:
determining the required drainage flow according to the current polarization potential value of the drainage network and a preset polarization potential value-drainage flow curve;
and controlling the drainage switch to act so as to introduce the stray current into the negative bus until the actual drainage volume of the stray current reaches the required drainage volume.
In some embodiments, the step of obtaining the current resistance value of the rail includes:
and acquiring the current transition resistance and the current longitudinal resistance of the track.
In a second aspect, there is provided a monitoring drainage device comprising:
the first acquisition unit is used for acquiring the current polarization potential value of the drainage network according to a preset time period;
the first judgment unit is used for judging whether the current polarization potential value of the drainage network is larger than a preset first potential threshold value or not;
the second obtaining unit is used for obtaining the current resistance value of the track if the current polarization potential value of the drainage network is larger than a preset first potential threshold value;
the second judging unit is used for judging whether the current resistance value of the track is smaller than a preset resistance threshold value or not;
the current discharging unit is used for controlling the current discharging switch to act so as to introduce the stray current of the current discharging net into the negative bus if the current resistance value of the track is smaller than a preset resistance threshold value.
In some embodiments, the monitoring drainage device further comprises:
the third judging unit is used for judging whether the polarization potential value of the drainage network is larger than a preset second potential threshold value or not; wherein the second potential threshold is greater than the preset first potential threshold;
and the second drainage unit is used for directly controlling the drainage switch to act so as to introduce the stray current of the drainage network into the negative bus if the polarization potential value of the drainage network is greater than a preset second potential threshold value.
In some embodiments, the first drainage unit is configured to, if the current resistance value of the rail is smaller than the preset resistance threshold value, control the drainage switch to operate so as to introduce the stray current of the drainage network into the negative bus:
determining the required drainage flow according to the current polarization potential value of the drainage network and a preset polarization potential value-drainage flow curve;
and controlling the drainage switch to act so as to introduce the stray current into the negative bus until the actual drainage quantity of the stray current reaches the required drainage quantity.
In some embodiments, the second obtaining unit is configured to, if the current polarization potential value of the current grid is greater than a preset first potential threshold, obtain a current resistance value of the rail by:
and obtaining the current transition resistance and the current longitudinal resistance of the track.
In a third aspect, a computer device is provided, comprising: the device comprises a memory and a processor, wherein at least one instruction is stored in the memory, and the at least one instruction is loaded and executed by the processor to realize the monitoring drainage method.
In a fourth aspect, a computer-readable storage medium is provided, which stores computer instructions that, when executed by a computer, cause the computer to perform the aforementioned method of monitoring drainage.
The technical scheme provided by the invention has the beneficial effects that:
the embodiment of the invention provides a drainage monitoring method, a drainage monitoring device, drainage monitoring equipment and a readable storage medium. The invention combines the current resistance of the track to carry out judgment and control, avoids the high-frequency action of the drainage switch and improves the action accuracy of the drainage switch.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic flow chart of a drainage monitoring method according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an electric drainage control principle provided in the embodiment of the present invention;
fig. 3 is a schematic structural view of a drainage monitoring device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a computer device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
The embodiment of the invention provides a drainage monitoring method, which can solve the technical problems of more action frequencies and insufficient action accuracy of a drainage switch in the conventional drainage monitoring method.
Referring to fig. 1, an embodiment of the present invention provides a drainage monitoring method, including the following steps:
and S10, acquiring the current polarization potential value of the drainage network according to a preset time period. For example, at one hour intervals, the current polarization potential value of the drainage network is measured by the monitoring device. The drainage network generally refers to a tunnel structural steel bar, a viaduct beam structural steel bar, an integral ballast bed structural steel bar, a ground busbar of a traction substation and the like.
And S20, judging whether the current polarization potential value of the drainage network is greater than a preset first potential threshold value.
And S30, if the current polarization potential value of the drainage network is greater than a preset first potential threshold value. And obtaining the current resistance value of the track. When the current polarization potential value of the drainage network reaches a certain value, the possibility that the potential flows to form stray current to leak to the ground exists in the drainage network.
And step S40, judging whether the current resistance value of the track is smaller than a preset resistance threshold value.
And S50, if the current resistance value of the track is smaller than a preset resistance threshold value, controlling the drainage switch to act so as to introduce the stray current of the drainage network into the negative bus. Although the current polarization potential value of the drainage network reaches a certain value, the drainage network has the possibility that the potential flows to form stray current to be leaked into the ground. However, if the current resistance value of the track is larger and not smaller than the preset resistance threshold value, the insulation is better, the possibility that stray current is leaked to the ground due to current flowing of the drainage network is lower, and the action of the drainage switch can not be controlled so as to introduce the stray current of the drainage network into the negative bus. Only when the current resistance value of the track is smaller than the preset resistance threshold value, the possibility that stray current is leaked to the ground due to current flowing of the drainage network is high, and at the moment, the drainage switch is controlled to act so as to introduce the stray current of the drainage network into the negative bus and prevent the stray current from corroding the drainage network.
Fig. 2 is a diagram of a drainage electrical control principle structure, which is used for drainage of an upstream drainage network and a downstream drainage network, and mainly includes silicon diodes D1 and D2, adjustable resistors R11 and R12, and fixed current limiting resistors R21 and R22, and utilizes the forward-on and reverse-off characteristics of the silicon diodes to realize polar drainage of stray currents. Each drainage branch is provided with a drainage switch CZ for controlling whether the drainage branch is used or not. The RC loop is used for inhibiting spike pulse generated when the main loop is switched on and switched off. Reverse drainage from the negative bus to the drainage network can be prevented by utilizing the unidirectional conductivity of the silicon diodes D1 and D2, and the fast fuses FU1 and FU2 are used for protecting the monitoring drainage device when short-circuit load occurs. The current sensors M1 and M2 are used for detecting the magnitude of the drainage current in the drainage loop and controlling the on-off duty ratio of the IGBT by monitoring the drainage device so as to control the magnitude of the drainage current. When the IGBT is turned off, R11 and R21, and R12 and R22 are in a series state, so that the overall resistance is large and the drain current is small. When the IGBT is conducted, R11 and R12 are separated, only R2 with small resistance exists in the loop, and drainage is large. R21 and R22 mainly function to limit the instantaneous current of the main loop to ensure that IGBT1 and IGBT2 can operate normally.
The drainage monitoring method in the embodiment of the invention comprises the steps of firstly obtaining a current polarization potential value of a drainage network, then judging whether the current polarization potential value of the drainage network is larger than a preset first potential threshold value, obtaining a current resistance value of a track if the current polarization potential value of the drainage network is larger than the preset first potential threshold value, finally judging whether the current resistance value of the track is smaller than the preset resistance threshold value, and controlling a drainage switch to act so as to introduce stray current of the drainage network into a negative bus if the current resistance value of the track is smaller than the preset resistance threshold value. The invention combines the current resistance of the track to carry out judgment and control, avoids the high-frequency action of the drainage switch and improves the action accuracy of the drainage switch.
As an optional implementation manner, in an embodiment of the present invention, before the step of determining whether the current polarization potential value of the drainage network is greater than the preset first potential threshold, the method includes:
judging whether the polarization potential value of the drainage network is greater than a preset second potential threshold value or not; wherein the second potential threshold is greater than the preset first potential threshold;
if yes, the drainage switch is directly controlled to act so as to lead stray current of the drainage network into the negative bus.
When the polarization potential value of the drainage network is greater than the preset second potential threshold value, the preset second potential threshold value is usually several times of the first potential threshold value, and even if the current resistance value of the track is small at the moment, the possibility that stray current is leaked to the ground due to potential flowing in the drainage network is high, so that the drainage switch is directly controlled to act to introduce the stray current of the drainage network into the negative bus, and the corrosion of the stray current to the drainage network is prevented.
As an alternative implementation manner, in an embodiment of the present invention, the step of controlling the drainage switch to act so as to introduce the stray current of the drainage grid into the negative bus includes:
determining the required drainage flow according to the current polarization potential value of the drainage network and a preset polarization potential value-drainage flow curve;
and controlling the drainage switch to act so as to introduce the stray current into the negative bus until the actual drainage volume of the stray current reaches the required drainage volume.
The drainage flow rate is determined according to the current polarization potential value of the drainage network and a preset polarization potential value-drainage flow rate curve, and the purpose of accurate drainage is achieved. The preset polarization potential value-drainage flow curve can be determined by experiments in advance.
As an optional implementation manner, in an embodiment of the present invention, the step of obtaining the current resistance value of the track includes:
the resistance values of the current transition resistor and the current longitudinal resistor of the track are obtained, the larger the transition resistor and the longitudinal resistor are, the larger the inhibition effect on stray current leakage to the ground is, the comprehensive consideration can be realized, and the drainage accuracy is improved.
Referring to fig. 3, an embodiment of the present invention further provides a monitoring drainage device, including: the device comprises a first acquisition unit, a first judgment unit, a second acquisition unit, a second judgment unit and a first drainage unit.
The first obtaining unit is used for obtaining the current polarization potential value of the drainage network according to a preset time period.
The first judging unit is used for judging whether the current polarization potential value of the drainage network is larger than a preset first potential threshold value.
The second obtaining unit is used for obtaining the current resistance value of the track if the current polarization potential value of the drainage network is larger than a preset first potential threshold value.
The second judging unit is used for judging whether the current resistance value of the track is smaller than a preset resistance threshold value.
The drainage unit is used for controlling the drainage switch to act so as to introduce stray current of the drainage network into the negative bus if the current resistance value of the track is smaller than a preset resistance threshold value.
The drainage monitoring device in the embodiment of the invention firstly obtains the current polarization potential value of the drainage network, then judges whether the current polarization potential value of the drainage network is larger than a preset first potential threshold value or not, obtains the current resistance value of a track if the current polarization potential value of the drainage network is larger than the preset first potential threshold value, finally judges whether the current resistance value of the track is smaller than the preset resistance threshold value or not, and controls the drainage switch to act so as to introduce the stray current of the drainage network into a negative bus if the current resistance value of the track is smaller than the preset resistance threshold value. The invention combines the current resistance of the track to carry out judgment and control, avoids the high-frequency action of the drainage switch and improves the action accuracy of the drainage switch.
As an alternative embodiment, in one invention embodiment, the monitoring drainage device: a third judging unit and a second drainage unit.
The third judging unit is used for judging whether the polarization potential value of the drainage network is greater than a preset second potential threshold value; wherein the second potential threshold is greater than the preset first potential threshold;
and the second drainage unit is used for directly controlling the drainage switch to act so as to introduce stray current of the drainage network into the negative bus if the polarization potential value of the drainage network is greater than a preset second potential threshold value.
As an optional implementation manner, in an embodiment of the present invention, if the current resistance value of the rail is smaller than the preset resistance threshold, a process of controlling the drainage switch to act so as to introduce the stray current of the drainage network into the negative bus includes:
determining the required drainage flow according to the current polarization potential value of the drainage network and a preset polarization potential value-drainage flow curve;
and controlling the drainage switch to act so as to introduce the stray current into the negative bus until the actual drainage quantity of the stray current reaches the required drainage quantity.
As an optional implementation manner, in an embodiment of the present invention, if the current polarization potential value of the drainage network is greater than the preset first potential threshold, the second obtaining unit is configured to obtain the current resistance value of the track by:
and obtaining the current transition resistance and the current longitudinal resistance of the track.
It should be noted that, as will be clear to those skilled in the art, for convenience and brevity of description, the specific working processes of the apparatus and the units described above may refer to the corresponding processes in the foregoing embodiments of the drainage monitoring method, and are not described herein again.
The monitoring drainage device provided by the above embodiment can be implemented in the form of a computer program, and the computer program can be run on a computer device as shown in fig. 4.
An embodiment of the present invention further provides a computer device, including: the drainage monitoring method comprises a memory, a processor and a network interface which are connected through a system bus, wherein at least one instruction is stored in the memory, and the at least one instruction is loaded and executed by the processor so as to realize all steps or partial steps of the drainage monitoring method.
The network interface is used for performing network communication, such as sending distributed tasks. It will be appreciated by those skilled in the art that the configuration shown in fig. 4 is a block diagram of only a portion of the configuration associated with the inventive arrangements and is not intended to limit the computing devices to which the inventive arrangements may be applied, and that a particular computing device may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
The Processor may be a CPU, or other general purpose Processor, digital Signal Processor (DSP), application Specific Integrated Circuit (ASIC), field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, or the like. The general purpose processor may be a microprocessor or the processor may be any conventional processor or the like, the processor being the control center of the computer device and the various interfaces and lines connecting the various parts of the overall computer device.
The memory may be used to store computer programs and/or modules, and the processor may implement various functions of the computer device by executing or executing the computer programs and/or modules stored in the memory and invoking data stored in the memory. The memory may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required by at least one function (such as a video playing function, an image playing function, etc.), and the like; the storage data area may store data (such as video data, image data, etc.) created according to the use of the cellular phone, etc. In addition, the memory may include high speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), at least one magnetic disk storage device, a Flash memory device, or other volatile solid state storage device.
Wherein, in one embodiment, the processor is configured to execute a computer program stored in the memory to implement the steps of:
step S10, acquiring a current polarization potential value of the drainage network according to a preset time period;
s20, judging whether the current polarization potential value of the drainage network is larger than a preset first potential threshold value or not;
step S30, if the current polarization potential value of the drainage network is larger than a preset first potential threshold value, obtaining the current resistance value of the track;
step S40, judging whether the current resistance value of the track is smaller than a preset resistance threshold value;
and S50, if the current resistance value of the track is smaller than a preset resistance threshold value, controlling the drainage switch to act so as to introduce the stray current of the drainage network into the negative bus.
As an optional implementation manner, in an embodiment of the present invention, before the step of determining whether the current polarization potential value of the drainage grid is greater than the preset first potential threshold, the method includes:
judging whether the polarization potential value of the drainage network is greater than a preset second potential threshold value or not; wherein the second potential threshold is greater than the preset first potential threshold;
if yes, the drainage switch is directly controlled to act so as to lead stray current of the drainage network into the negative bus.
As an alternative implementation manner, in an embodiment of the present invention, the step of controlling the drainage switch to act so as to introduce the stray current of the drainage grid into the negative bus includes:
determining the required drainage flow according to the current polarization potential value of the drainage network and a preset polarization potential value-drainage flow curve;
and controlling the drainage switch to act so as to introduce the stray current into the negative bus until the actual drainage volume of the stray current reaches the required drainage volume.
As an optional implementation manner, in an embodiment of the present invention, the step of obtaining the current resistance value of the track includes:
and obtaining the current transition resistance and the current longitudinal resistance of the track.
The embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements all or part of the steps of the drainage monitoring method described above.
The embodiment of the present invention may implement all or part of the foregoing processes, and may also be implemented by instructing related hardware by a computer program, where the computer program may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the computer program may implement the steps of the foregoing methods. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying computer program code, recording medium, U.S. disk, removable hard disk, magnetic diskette, optical disk, computer memory, read-Only memory (ROM), random Access Memory (RAM), electrical carrier wave signal, telecommunications signal, software distribution medium, etc. It should be noted that the computer-readable medium may contain suitable additions or subtractions depending on the requirements of legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer-readable media may not include electrical carrier signals or telecommunication signals in accordance with legislation and patent practice.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, server, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers in the embodiments of the present invention are only for description, and do not represent the advantages and disadvantages of the embodiments.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A method of monitoring drainage, comprising the steps of:
acquiring a current polarization potential value of the drainage network according to a preset time period;
judging whether the current polarization potential value of the drainage network is larger than a preset first potential threshold value or not;
if the current polarization potential value of the drainage network is larger than a preset first potential threshold value, obtaining the current resistance value of the track;
judging whether the current resistance value of the track is smaller than a preset resistance threshold value or not;
and if the current resistance value of the track is smaller than the preset resistance threshold value, controlling the drainage switch to act so as to introduce the stray current of the drainage network into the negative bus.
2. The method for monitoring drainage of claim 1, wherein the step of determining whether the current polarization potential value of the drainage network is greater than a preset first potential threshold value is preceded by:
judging whether the polarization potential value of the drainage network is greater than a preset second potential threshold value or not; wherein the second potential threshold is greater than the preset first potential threshold;
if so, directly controlling the drainage switch to act so as to introduce the stray current of the drainage network into the negative bus.
3. The method for monitoring drainage of claim 1, wherein the step of controlling the drainage switch to act to introduce stray current from the drainage grid to the negative bus comprises:
determining the required drainage flow according to the current polarization potential value of the drainage network and a preset polarization potential value-drainage flow curve;
and controlling the drainage switch to act so as to introduce the stray current into the negative bus until the actual drainage volume of the stray current reaches the required drainage volume.
4. The method for monitoring drainage of claim 1, wherein the step of obtaining the current resistance value of the rail comprises:
and acquiring the current transition resistance and the current longitudinal resistance of the track.
5. A device for monitoring drainage, comprising:
the first acquisition unit is used for acquiring the current polarization potential value of the drainage network according to a preset time period;
the first judgment unit is used for judging whether the current polarization potential value of the drainage network is larger than a preset first potential threshold value or not;
the second obtaining unit is used for obtaining the current resistance value of the track if the current polarization potential value of the drainage network is larger than a preset first potential threshold value;
the second judging unit is used for judging whether the current resistance value of the track is smaller than a preset resistance threshold value or not;
the current resistance value of the track is smaller than a preset resistance threshold value, and the current drainage unit is used for controlling the current drainage switch to act so as to introduce the stray current of the drainage network into the negative bus.
6. The flow monitoring device as claimed in claim 5, further comprising:
the third judging unit is used for judging whether the polarization potential value of the drainage network is larger than a preset second potential threshold value or not; wherein the second potential threshold is greater than the preset first potential threshold;
and the second drainage unit is used for directly controlling the drainage switch to act so as to introduce the stray current of the drainage network into the negative bus if the polarization potential value of the drainage network is greater than a preset second potential threshold value.
7. The monitoring drainage device as claimed in claim 5, wherein the first drainage unit is configured to control the drainage switch to introduce the stray current of the drainage network into the negative bus if the current resistance value of the rail is smaller than the preset resistance threshold value, by:
determining the required drainage flow according to the current polarization potential value of the drainage network and a preset polarization potential value-drainage flow curve;
and controlling the drainage switch to act so as to introduce the stray current into the negative bus until the actual drainage volume of the stray current reaches the required drainage volume.
8. The device for monitoring electric drainage of claim 5, wherein the second obtaining unit is configured to, if the current polarization potential value of the drainage network is greater than the preset first potential threshold value, obtain the current resistance value of the rail by:
and acquiring the current transition resistance and the current longitudinal resistance of the track.
9. A computer device, comprising: a memory and a processor, the memory having stored therein at least one instruction that is loaded and executed by the processor to implement the method of monitoring drainage of any of claims 1-4.
10. A computer-readable storage medium characterized by: the computer storage medium stores computer instructions that, when executed by a computer, cause the computer to perform the method of monitoring drainage of any one of claims 1 to 4.
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| CN114966216A (en) * | 2022-08-01 | 2022-08-30 | 中铁电气化勘测设计研究院有限公司 | Steel rail longitudinal resistance and transition resistance measuring system |
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| JP2010265490A (en) * | 2009-05-12 | 2010-11-25 | Tokyo Gas Co Ltd | Selective flow exhaust apparatus and method for deciding flow exhaust current limitation resistance value |
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