CN114325472A - Stray current monitoring system based on dynamic and static automatic switching measurement function - Google Patents
Stray current monitoring system based on dynamic and static automatic switching measurement function Download PDFInfo
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- CN114325472A CN114325472A CN202111586566.3A CN202111586566A CN114325472A CN 114325472 A CN114325472 A CN 114325472A CN 202111586566 A CN202111586566 A CN 202111586566A CN 114325472 A CN114325472 A CN 114325472A
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Abstract
The invention discloses a stray current monitoring system based on a dynamic and static automatic switching measurement function, which comprises: the static measurement module is used for measuring the resistance and the transition resistance of the steel rail; the dynamic measurement module is used for measuring the leakage current of the steel rail; the monitoring module is used for processing data collected by the static measuring module and the dynamic measuring module; the time synchronization server module is used for providing time service for the static measurement module and the dynamic measurement module so as to ensure that the clocks of the monitoring module, the static measurement module and the dynamic measurement module are kept consistent; and the upper computer module is coupled with the monitoring module and used for storing, inquiring, analyzing and printing the real-time data acquired by the whole line monitoring points and the calculated leakage current, leakage proportion and transition resistance.
Description
Technical Field
The invention relates to the technical field of rail transit, in particular to a stray current monitoring system based on a dynamic and static automatic switching measurement function and using the static and dynamic automatic switching measurement function.
Background
In the existing stray current monitoring system based on dynamic and static automatic switching measurement functions, an equipment-level sensor is installed in a driving interval, the sensor directly collects body potential, reference voltage and track voltage, the system calculates a polarization maximum value, a polarization minimum value, a polarization positive average value, a polarization negative average value, a track maximum value, a track minimum value, a track positive average value and a track negative average value through a station-level monitoring device, and data of the station-level monitoring device are uploaded to an upper computer in a centralized manner to be displayed, the data can only reflect the corrosion condition of a monitoring point, and the actual transition resistance cannot be directly seen.
Therefore, the system upgrades the technical principle on the premise of ensuring the functions, can realize the dynamic measurement of leakage current, the static measurement of the steel rail and the excess resistance, and can realize the automatic switching of the novel stray current monitoring system based on the dynamic and static automatic switching measurement functions. Hereinafter referred to as an automatic measurement monitoring system.
Disclosure of Invention
In order to solve the problems and requirements, the scheme provides a stray current monitoring system based on a dynamic and static automatic switching measurement function, and the technical purpose can be achieved due to the adoption of the following technical characteristics, and other multiple technical effects are brought.
The invention provides a stray current monitoring system based on a dynamic and static automatic switching measurement function, which is applied to monitoring an uplink track and a downlink track, and comprises the following components:
the static measurement module is used for measuring the resistance and the transition resistance of the steel rail;
the dynamic measurement module is used for measuring the leakage current of the steel rail;
the monitoring module is provided with an uplink network port, a downlink network port and a CAN interface, the uplink network port is coupled with the static measurement module and the dynamic measurement module on the uplink track through an uplink optical fiber switch, and the downlink network port is coupled with the static measurement module and the dynamic measurement module on the downlink track through a downlink optical fiber switch and is used for processing data collected by the static measurement module and the dynamic measurement module;
the time synchronization server module is respectively coupled with the CAN interface, the uplink optical fiber switch and the downlink optical fiber switch and is used for providing time service for the static measurement module and the dynamic measurement module so as to ensure that the monitoring module is consistent with clocks of the static measurement module and the dynamic measurement module;
and the upper computer module is coupled with the monitoring module and used for storing, inquiring, analyzing and printing the real-time data acquired by the whole line monitoring points and the leakage current, the leakage proportion and the transition resistance through calculation.
In addition, the stray current monitoring system based on the dynamic and static automatic switching measurement function can also have the following technical characteristics:
in one example of the present invention, the monitoring system further comprises:
an automatic switching module coupled to the static measurement module and the dynamic measurement module for switching to the static measurement module at night and to the dynamic measurement module during the day.
In one example of the present invention, the static measurement module comprises: a first sensor and a sampling resistor, wherein the sampling resistor is connected with the first sensor,
the sampling resistor is used for collecting the resistance value of the measuring area, and the first sensor is used for measuring the leakage current according to the resistance value.
In one example of the present invention, the dynamic measurement module includes: second and third sensors
And the measuring areas are respectively arranged at two sides of the measuring area and used for statically measuring the current value of the loop at night.
In one example of the present invention, the automatic switching module includes:
and the time controller is used for controlling the switching between the static measurement module and the dynamic measurement module, wherein the static measurement module is switched to at night, and the dynamic measurement module is switched to at daytime.
In an example of the present invention, each of the static measurement module and the dynamic measurement module includes a plurality of modules, and the modules are alternately disposed on the upstream track and the downstream track in sequence.
In one example of the present invention, the method further comprises: and the configuration screen is coupled with the monitoring module and is used for displaying the processed data.
In one example of the present invention, the method further comprises: and the drainage controller is coupled with the monitoring module and used for uploading the analog quantity switching quantity of the drainage cabinet to the monitoring module for displaying and supporting the intelligent drainage function.
In one example of the present invention, the method further comprises: and the SCADA system is coupled with the monitoring module and is used for monitoring the real-time acquisition condition of the monitoring module.
In one example of the present invention, the method further comprises: and the background switch is coupled between the upper computer module and the monitoring module.
The following description of the preferred embodiments for carrying out the present invention will be made in detail with reference to the accompanying drawings so that the features and advantages of the present invention can be easily understood.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments of the present invention will be briefly described below. Wherein the drawings are only for purposes of illustrating some embodiments of the invention and are not to be construed as limiting the invention to all embodiments thereof.
Fig. 1 is a schematic block diagram of a stray current monitoring system based on a dynamic-static automatic switching measurement function according to an embodiment of the present invention.
List of reference numerals:
a monitoring system 1000;
a static measurement module 100;
a first sensor 110;
a sampling resistor 120;
a dynamic measurement module 200;
a second sensor 210;
a third sensor 220;
a monitoring module 300;
an upstream fabric switch 310;
a downstream fabric switch 320;
a time synchronization server module 400;
an upper computer module 500;
a configuration screen 600;
a drainage controller 700;
a SCADA system 800;
a background switch 900.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments of the present invention. Like reference symbols in the various drawings indicate like elements. It should be noted that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and claims of the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
The invention provides a stray current monitoring system 1000 based on a dynamic and static automatic switching measurement function, which is applied to monitoring an uplink track and a downlink track, wherein the stray current monitoring system 1000 based on the dynamic and static automatic switching measurement function comprises:
the static measurement module 100 is used for measuring the resistance and the transition resistance of the steel rail;
the dynamic measurement module 200 is used for measuring the leakage current of the steel rail;
the monitoring module 300 is provided with an uplink network port, a downlink network port and a CAN interface, the uplink network port is coupled with the static measurement module 100 and the dynamic measurement module 200 on the uplink track through an uplink optical fiber switch 310, and the downlink network port is coupled with the static measurement module 100 and the dynamic measurement module 200 on the downlink track through a downlink optical fiber switch 320 and is used for processing data collected by the static measurement module 100 and the dynamic measurement module 200;
the time synchronization server module 400 is respectively coupled to the CAN interface, the uplink optical fiber switch 310 and the downlink optical fiber switch 320, and is configured to provide time service for the static measurement module 100 and the dynamic measurement module 200 to ensure that the clocks of the monitoring module 300 and the static measurement module 100 and the dynamic measurement module 200 are consistent;
and the upper computer module 500 is coupled with the monitoring module 300 and is used for storing, inquiring, analyzing and printing the real-time data acquired by the whole line monitoring points and the calculated leakage current, leakage proportion and transition resistance.
In the monitoring system 1000, the static measurement module 100 and the dynamic measurement module 200 distributed at each monitoring point measure the measurement area, the dynamic measurement module 200 measures the leakage current of the steel rail in the daytime, the static measurement module 100 measures the resistance and the transition resistance of the steel rail at night, the collected data are uniformly transmitted to the monitoring module 300 according to the power supply interval, the monitoring module 300 sorts and calculates the data in the interval, and parameters such as the leakage current, the leakage proportion, the transition resistance and the like of the interval are given according to each pair of sensor monitoring intervals; finally, all data monitored in each power supply section are uploaded to an upper computer by the monitoring module 300 in each power supply section, and the upper computer software performs report form and curve summarizing display on the data of the whole system, so that operators can visually master the actual condition of the stray current of the system, and effective data support is provided for the protection of the stray current, the positioning of serious leakage areas, and targeted inspection and rectification.
In one example of the present invention, the monitoring system 1000 further comprises:
an automatic switching module coupled to the static measurement module 100 and the dynamic measurement module 200, for switching to the static measurement module 100 at night and to the dynamic measurement module 200 during the daytime;
the automatic switching module is switched to the static measuring module 100 at night, the static measuring module 100 calculates the static steel rail resistance and the transition resistance value at night, the dynamic measuring module 200 is switched to the day, and the dynamic measuring module 200 calculates the leakage current of different sections of the system in the day and displays the leakage current in real time.
In one example of the present invention, the static measurement module 100 includes: a first sensor 110 and a sampling resistor 120,
the sampling resistor 120 is configured to collect a resistance value of the measurement area, and the first sensor 110 is configured to measure a leakage current according to the resistance value.
In one example of the present invention, the dynamic measurement module 200 includes: second sensor 210 and third sensor 220
And the measuring areas are respectively arranged at two sides of the measuring area and used for statically measuring the current value of the loop at night.
In one example of the present invention, the automatic switching module includes:
a time controller for controlling switching between the static measurement module 100 and the dynamic measurement module 200, wherein switching to the static measurement module 100 is performed at night and switching to the dynamic measurement module 200 is performed during the day;
the automatic switching module is controlled by combining a time controller and a contactor, the time controller sets time for measuring at night, the contactor is closed, the contact is closed, the direct-current source power supply loop normally works, the system automatically and statically measures the resistance value of the steel rail and the transition resistance value, the time controller is disconnected during daytime, the contactor is disconnected, the direct-current source power supply loop does not work, the system automatically measures dynamic leakage current, and then the function of automatically switching between the dynamic leakage current and the static measurement of the resistance transition resistance of the steel rail is realized.
The monitoring module 300 calculates the static steel rail resistance and the transition resistance value according to the time period and night through the time controller, calculates the magnitude of the leakage current of different sections of the system in the day time and displays the magnitude in real time.
In an example of the present invention, each of the static measurement module 100 and the dynamic measurement module 200 includes a plurality of modules, and the modules are alternately arranged on the upstream track and the downstream track in sequence;
the measurement of different measurement regions can be realized by arranging a plurality of static measurement modules 100 and the dynamic measurement module 200.
In one example of the present invention, the method further comprises: a configuration screen 600, coupled to the monitoring device, is used for displaying the processed data, for example, the collected data is displayed in a form and curve after being processed by the monitoring device.
In one example of the present invention, the method further comprises: the drainage controller 700 is coupled to the monitoring device, and is configured to upload the analog quantity switching quantity of the drainage cabinet to the monitoring device for display, and support the intelligent drainage function; the drainage cabinet controller is a core device of the drainage cabinet, and the product has complete functions, high reliability and convenient installation and maintenance and is widely applied to subway stray current protection systems of rail transit such as light rails, urban subways and the like.
The drainage cabinet controller mainly has the following functions:
detecting an analog quantity: can detect 11 positive and negative bipolar voltages or currents and other analog quantities at the same time;
controlling: the independent 4-path PWM automatically controls the IGBT intelligent drainage;
switching value: the state of 5 paths of fuses, the state of 4 paths of IGBTs and the states of other paths of fuses and the like can be monitored in real time, and the states of 16 paths are shared;
displaying: the LED can display fuse faults, IGBT faults, breaker on-off states, drainage states and the like, and the touch screen can display the voltage, current value, total drainage value, drainage states and the like of each branch circuit;
communication: RS-485 and CAN interfaces, 2 RS-232 interfaces, Ethernet and MODBUS protocol, CAN upload voltage current and state quantity in real time, and CAN remotely control drainage;
outputting by a relay: 6 paths of independent output control can upload fault alarm signals.
In one example of the present invention, the method further comprises: a SCADA system 800 coupled to the monitoring module 300 for monitoring the real-time acquisition of the monitoring module 300; and the remote data monitoring and data acquisition system completes the real-time acquisition condition of each monitoring point device. Communication protocol modbus, interface: and RS 485.
In one example of the present invention, the method further comprises: a background switch 900 coupled between the upper computer module 500 and the monitoring module 300; the upper computer module 500 is coupled to the monitoring module 300 through the background switch 900.
This stray current monitoring system 1000 based on developments static automatic switch measurement function can realize daytime night automatic switch measurement function, measures real-time polarization, rail structure voltage, leakage current etc. during daytime locomotive operation, and locomotive outage measures body potential, rail longitudinal resistance, rail to ground drainage network structure reinforcing bar transition resistance etc. night, through online and off-line measurement's function, can obtain the insulating condition, the current leakage condition of different sections of whole line.
Stray current monitoring system 1000 based on developments static automatic switch-over measurement function adopts novel collection strategy to calculate monitoring data, equipment level sensor collection rail structure voltage, the ten meters of rail pressure drop, construction steel polarization potential, sampling resistance 120 voltage value, half an hour average value of polarization rail structure is calculated to the sensor, the sensor passes through the net gape and gives monitoring module 300 with these data centralization upload, monitoring module 300 calculates static rail resistance and transition resistance value according to the time quantum night through the time controller, calculate the size and the real-time display that obtain the different sections of system and reveal current daytime, monitoring module 300 in each power supply interval sends all data of this interregional monitoring to the host computer, host computer software reports to whole system data, the curve is gathered the show.
The exemplary embodiment of the stray current monitoring system 1000 based on the dynamic-static automatic switching measurement function proposed by the present invention has been described in detail with reference to the preferred embodiments, however, it will be understood by those skilled in the art that many variations and modifications can be made to the above-described specific embodiments and many combinations of the various technical features and structures proposed by the present invention can be made without departing from the concept of the present invention, and the scope of the present invention is determined by the appended claims.
Claims (10)
1. The utility model provides a stray current monitoring system based on developments static automatic switch-over measurement function which characterized in that is applied to the monitoring of ascending track and descending track, stray current monitoring system based on developments static automatic switch-over measurement function includes:
the static measurement module (100) is used for measuring the resistance and the transition resistance of the steel rail;
the dynamic measurement module (200) is used for measuring the leakage current of the steel rail;
the monitoring module (300) is provided with an uplink network port, a downlink network port and a CAN interface, the uplink network port is coupled with the static measurement module (100) and the dynamic measurement module (200) on the uplink track through an uplink optical fiber switch (310), and the downlink network port is coupled with the static measurement module (100) and the dynamic measurement module (200) on the downlink track through a downlink optical fiber switch (320) and is used for processing data collected by the static measurement module (100) and the dynamic measurement module (200);
the time synchronization server module (400) is respectively coupled with the CAN interface, the uplink optical fiber switch (310) and the downlink optical fiber switch (320) and is used for providing time service for the static measurement module (100) and the dynamic measurement module (200) so as to ensure that the clocks of the monitoring module (300) and the static measurement module (100) and the dynamic measurement module (200) are kept consistent;
and the upper computer module (500) is coupled with the monitoring module (300) and is used for storing, inquiring, analyzing and printing the real-time data acquired by the whole line monitoring points and the leakage current, the leakage proportion and the transition resistance through calculation.
2. The stray current monitoring system based on the dynamic static automatic switching measurement function according to claim 1,
the monitoring system further comprises:
an automatic switching module coupled to the static measurement module (100) and the dynamic measurement module (200) for switching to the static measurement module (100) during the night and to the dynamic measurement module (200) during the day.
3. The stray current monitoring system based on the dynamic static automatic switching measurement function according to claim 1,
the static measurement module (100) comprises: a first sensor (110) and a sampling resistor (120),
the sampling resistor (120) is used for collecting the resistance value of the measuring area, and the first sensor (110) is used for measuring the leakage current according to the resistance value.
4. The stray current monitoring system based on the dynamic static automatic switching measurement function according to claim 1,
the dynamic measurement module (200) comprises: a second sensor (210) and a third sensor (220)
And the measuring areas are respectively arranged at two sides of the measuring area and used for statically measuring the current value of the loop at night.
5. The stray current monitoring system based on the dynamic static automatic switching measurement function according to claim 1,
the automatic switching module includes:
a time controller for controlling switching between the static measurement module (100) and the dynamic measurement module (200), wherein switching to the static measurement module (100) during the night and switching to the dynamic measurement module (200) during the day.
6. The stray current monitoring system based on the dynamic static automatic switching measurement function according to claim 1,
the static measurement module (100) and the dynamic measurement module (200) are respectively provided with a plurality of modules, and are sequentially and alternately arranged on the ascending track and the descending track.
7. The stray current monitoring system based on the dynamic static automatic switching measurement function according to claim 1,
further comprising: a configuration screen (600) coupled to the monitoring module (300) for displaying the processed data.
8. The stray current monitoring system based on the dynamic static automatic switching measurement function according to claim 1,
further comprising: the drainage controller (700) is coupled with the monitoring module (300) and is used for uploading the analog quantity switching quantity of the drainage cabinet to the monitoring module (300) for displaying and supporting the intelligent drainage function.
9. The stray current monitoring system based on the dynamic static automatic switching measurement function according to claim 1,
further comprising: a SCADA system (800) coupled to the monitoring module (300) for monitoring the real-time acquisition of the monitoring module (300).
10. The stray current monitoring system based on the dynamic static automatic switching measurement function according to claim 1,
further comprising: a background switch (900) coupled between the host computer module (500) and the monitoring module (300).
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Cited By (1)
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