CN113376447A - Track circuit lightning monitoring system and method - Google Patents
Track circuit lightning monitoring system and method Download PDFInfo
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- CN113376447A CN113376447A CN202110668418.XA CN202110668418A CN113376447A CN 113376447 A CN113376447 A CN 113376447A CN 202110668418 A CN202110668418 A CN 202110668418A CN 113376447 A CN113376447 A CN 113376447A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/0807—Measuring electromagnetic field characteristics characterised by the application
- G01R29/0814—Field measurements related to measuring influence on or from apparatus, components or humans, e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning
- G01R29/0842—Measurements related to lightning, e.g. measuring electric disturbances, warning systems
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/0864—Measuring electromagnetic field characteristics characterised by constructional or functional features
- G01R29/0871—Complete apparatus or systems; circuits, e.g. receivers or amplifiers
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- Measurement Of Current Or Voltage (AREA)
Abstract
The invention provides a track circuit lightning monitoring system and a method, which adopt a non-contact electric field intensity type sensor (a sensor which can sense the electric field intensity and convert the electric field intensity into an available output signal) to carry out pulse potential monitoring on an outdoor cable core wire, when lightning surge invasion occurs in the system, the potential on the outdoor core wire is changed, and pulse time, peak value and path are sent to a lightning collector, so that the system fault state recovery time caused by lightning fault of equipment is reduced, and the blank of track circuit lightning monitoring is made up.
Description
Technical Field
The invention belongs to the field of lightning monitoring, and particularly relates to a track circuit lightning monitoring system and method.
Background
Lightning can generate huge destruction action instantly due to physical effects of strong current, hot high temperature, strong electromagnetic radiation, violent shock waves and the like, so that lightning disasters are caused. The thunder disaster refers to the event that the lightning stroke or the invasion and influence of the thunder electromagnetic pulse cause the casualties or the damage of objects, partial or whole function of the objects is lost, and the adverse social and economic consequences are caused.
With the increasing of lightning disasters, more and more organizations, such as units, groups and various organizations, are aware of the importance of lightning protection and monitoring. In daily work application, perfect lightning protection measures are adopted, such as lightning rods, power supply lightning protection devices, power supply protection sockets, antenna feeder line protectors, signal lightning protection devices, lightning protection testing tools, measurement and control system lightning protection devices, earth pole protectors and the like; in addition, in order to meet the requirements of lightning active and protection monitoring, various lightning monitoring systems appear in the market.
However, the existing track circuit indoor transmission channel lightning-free monitoring device is free of monitoring devices for external lightning invasion, the invasion path and amplitude of lightning stroke cannot be monitored, and timely and effective countermeasures cannot be taken for lightning disasters under the condition that the track circuit cannot be monitored for damage to the track circuit device and failure treatment cannot be conducted timely.
Disclosure of Invention
In order to solve the above problems, the present invention provides a track circuit lightning monitoring system and method, wherein the method comprises:
lightning collecting and processing equipment collects lightning stroke data of a track circuit in a non-contact manner and preprocesses the lightning stroke data;
the lightning acquisition processing equipment sends the preprocessed lightning stroke data to upper processing equipment through a controller local area network;
the upper processing equipment receives the lightning stroke data and processes the lightning stroke data into lightning stroke voltage of a corresponding section;
and the upper processing equipment carries out lightning monitoring on the track circuit according to the lightning strike voltage.
Further, the lightning strike data comprises pulse time, a lightning strike peak value and a lightning invasion path.
Furthermore, a collecting unit in the thunder and lightning collecting and processing equipment collects lightning stroke data of the sensitive equipment in a non-contact mode, and the collecting unit is a non-contact electric field intensity sensor.
Furthermore, the electric field intensity sensor collects the lightning stroke data in an electric field coupling mode.
Further, the lightning strike voltage includes a line-to-ground lightning strike voltage and a line-to-line lightning strike voltage.
Further, the upper processing equipment stores the processed lightning stroke data as historical data, and screens out section lightning weak points according to the historical data.
Further, the upper processing equipment displays the lightning stroke data as a corresponding section lightning stroke data curve, and carries out lightning monitoring on the track circuit through the corresponding section lightning stroke data curve.
The invention also provides a track circuit lightning monitoring system, which comprises lightning acquisition and processing equipment and upper processing equipment:
the lightning acquisition and processing equipment is used for acquiring lightning stroke data of the track circuit in a non-contact manner and preprocessing the lightning stroke data; the lightning acquisition and processing equipment is also used for sending the preprocessed lightning strike data to upper processing equipment through a controller local area network;
the upper processing equipment is used for receiving the lightning stroke data and processing the lightning stroke data into lightning stroke voltage of a corresponding section; and the upper processing equipment carries out lightning monitoring on the track circuit according to the lightning strike voltage.
Further, the upper processing device is further configured to store the processed lightning strike data as historical data, and screen out a section lightning weak point according to the historical data.
Furthermore, the upper processing equipment is also used for displaying the lightning stroke data as a corresponding section lightning stroke data curve, and carrying out lightning monitoring on the track circuit through the corresponding section lightning stroke data curve.
Furthermore, the lightning acquisition and processing equipment comprises an acquisition unit, an acquisition and processing unit and a communication unit;
the acquisition unit is used for acquiring lightning stroke data of the track circuit;
the acquisition processing unit is used for preprocessing the lightning stroke data, and the preprocessing comprises amplification and extraction;
the communication unit is connected with the upper processing equipment and is used for sending the pre-processed lightning stroke data to the upper processing equipment through a controller local area network.
Further, the lightning acquisition and processing equipment further comprises a light display unit, and the light display unit is used for displaying the information of the corresponding sections.
Further, the acquisition unit is a non-contact electric field intensity sensor.
The track circuit lightning monitoring system and the method adopt a non-contact electric field intensity type sensor (a sensor which can sense the electric field intensity and convert the electric field intensity into an available output signal) to carry out pulse potential monitoring on an outdoor cable core wire, when lightning surge invasion occurs in the system, the potential on the outdoor core wire is changed, and pulse time, peak value and path are sent to a lightning collector, so that the system fault state recovery time caused by lightning stroke fault of equipment is reduced, and the blank of track circuit lightning monitoring is made up.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic diagram illustrating a track circuit lightning monitoring system according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention describes the lightning monitoring of the track circuit, and in the embodiment of the invention, the ZPW-2000A type track circuit is taken as an example for illustration, and the lightning monitoring of other track circuits is within the protection scope of the invention on the premise of not departing from the essence of the non-contact electric field intensity sensor of the embodiment of the invention.
The invention adopts a non-contact electric field intensity type sensor (a sensor which can sense the electric field intensity and convert the electric field intensity into an available output signal) to carry out pulse potential monitoring on the core wire of the outdoor cable, when lightning surge invasion occurs in the system, the potential on the outdoor core wire is changed, and the pulse time, the peak value and the path are sent to the lightning collector, thereby reducing the system fault state recovery time caused by lightning fault of equipment and making up the blank of lightning monitoring of a track circuit.
The defect that the existing lightning monitoring is used for directly collecting lightning data is overcome, the collecting probe is directly connected with the collecting point, the mode is not suitable for a track circuit system, the grounding point is easily formed between the on-line ground, and only the power supply, the ground wire and the like are monitored.
Lightning surge refers to instantaneous high Voltage generated on a power line, a signal line and a control line by lightning, and is generally suppressed by a Transient Voltage Super (TVS) tube; the TVS is a common surge suppression element, and has advantages of fast response time, large transient power, low leakage current, small breakdown voltage deviation, and easy control of clamping voltage. The principle of surge suppression of the TVS tube is as follows: when it is impacted by high energy in reverse direction, it can change the impedance between two poles from high to low at very fast speed (up to 10-12 s), so that the voltage clamp between two poles is in acceptable range, thus effectively protecting the components in electronic equipment from surge pulse.
Pulse time: and the processing chip on each acquisition line performs clock timing with the upper processing equipment every 30s, and the acquired pulse obtains pulse time according to the internal clock.
Peak value: the variation of the electric field intensity is collected through a non-contact electric field intensity type sensor, and the highest value of the electric field intensity which is instantaneously varied is a lightning stroke peak value.
The lightning intrusion path refers to the lightning flow path when the 2000A device is struck by lightning.
Fig. 1 shows a schematic diagram of a track circuit lightning monitoring system structure and a connection relationship in an embodiment of the present invention, in fig. 1, the track circuit lightning monitoring system includes a lightning acquisition processing device and an upper processing device, an outdoor side wiring of the track circuit is arranged on a simulation Network, an electric field intensity sensor in the lightning acquisition processing device surrounds the track circuit in a non-contact manner, and the lightning acquisition processing device and the upper processing device are connected by a CAN (Controller Area Network) communication.
Specifically, a non-contact electric field intensity sensor on a wiring outside a track circuit room collects the electric field intensity of the wiring, the electric field intensity refers to the electric field intensity collected on the sensor, the electric field intensity is converted into an induced potential signal through collecting the electric field intensity, and the induced potential signal is uploaded to an upper computer; the distribution electric field intensity that collection processing unit preliminary treatment in the thunder and lightning collection processing equipment was gathered, communication unit in the thunder and lightning collection processing equipment is with thunderbolt data transfer for upper processing equipment, and upper processing equipment receives the thunderbolt data, and upper processing equipment handles the thunderbolt data to carry out track circuit thunder and lightning monitoring through the data after handling, upper processing equipment has three effect: the upper processing equipment stores and processes lightning stroke data, the collected data are processed into line-to-ground lightning stroke voltage and line-to-line lightning stroke voltage values of corresponding sections, and the upper processing equipment monitors lightning of a track circuit according to the lightning stroke voltage; secondly, the upper processing equipment displays a lightning stroke data curve of the corresponding section, so that an operator can monitor the lightning stroke data more conveniently and visually; and thirdly, the upper processing equipment inquires historical lightning stroke data of a corresponding section, the historical lightning stroke number of the section inquires one review of the history during fault investigation, and the lightning weak point can be screened out through the section with more lightning strokes.
Specifically, the electric field intensity sensor collects the lightning stroke data in an electric field coupling mode. The electric field intensity sensor adopts electric field coupling, coupling capacitance exists between the acquisition sensor and the acquisition target cable, and the capacitive coupling can acquire the change condition of the electric field.
Specifically, the communication unit further sends the timing information of the upper computer to the upper processing device through the controller local area network, and the processing chip in the electric field intensity sensor on each acquisition line performs clock timing with the upper computer every 30 seconds.
The embodiment of the invention provides a track circuit lightning monitoring method, which comprises the following steps:
lightning stroke data of the track circuit are acquired in a non-contact mode through lightning acquisition and processing equipment, and the lightning stroke data are preprocessed;
the lightning acquisition processing equipment sends the preprocessed lightning stroke data to the upper processing equipment through a controller local area network;
the upper processing equipment receives lightning stroke data and processes the lightning stroke data into lightning stroke voltage of a corresponding section, wherein the lightning stroke voltage comprises line-to-ground lightning stroke voltage and line-to-line lightning stroke voltage;
and the upper processing equipment monitors the lightning of the track circuit according to the lightning voltage.
Specifically, when the upper computer processing equipment monitors thunder, the thunder signals with different waveforms are fitted in advance, the transient signal of the thunder signal is fitted, and finally the thunder signal conditions with different waveforms, different rising edge times and different amplitudes are obtained. The lightning stroke data curve comprises the contents of rising edge time, half-peak time of falling, peak voltage, lightning stroke time and the like.
Specifically, the lightning strike data comprises pulse time, a lightning strike peak value and a lightning invasion path.
Specifically, a collecting unit in the thunder and lightning collecting and processing equipment collects lightning stroke data of the sensitive equipment in a non-contact mode, and the collecting unit is a non-contact electric field intensity sensor.
Further, the upper processing equipment stores the processed lightning stroke data as historical data, and screens out section lightning weak points according to the historical data; and the upper processing equipment also displays the lightning stroke data into a corresponding section lightning stroke data curve, and carries out lightning monitoring on the track circuit through the corresponding section lightning stroke data curve.
Specifically, historical data is stored in upper processing equipment, and thunder and lightning collection processing equipment uploads thunder and lightning information to intelligent diagnosis system through the CAN line, and this intelligent diagnosis system is upper processing equipment. The historical data is mainly used for calling work, historical lightning stroke data in a section is used for reviewing the history when fault investigation is inquired, and lightning weak points can be screened out through sections with more lightning strokes.
The embodiment of the invention is provided with the sensitive equipment which is a track circuit, and the lightning acquisition and processing equipment and the sensitive equipment are not physically connected, so that no potential grounding contact is arranged in a main loop of the sensitive equipment.
Specifically, the lightning collecting and processing equipment in the embodiment of the invention can monitor 24 cables of 12 equipment in 6 sections through branching, and monitor and judge which path is struck by lightning through lightning surge, so that products which are struck by lightning can be maintained in the process of improving maintenance, and faults can be positioned in the process of faults.
The embodiment of the invention also provides a track circuit lightning monitoring system, which comprises lightning acquisition and processing equipment and upper processing equipment:
the lightning acquisition and processing equipment is used for acquiring lightning stroke data of the track circuit in a non-contact manner and preprocessing the lightning stroke data, and acquires an induced potential signal corresponding to the electric field intensity; and the lightning acquisition and processing equipment is also used for sending the preprocessed lightning strike data to upper processing equipment through a controller local area network.
The upper processing equipment is used for receiving the lightning stroke data and processing the lightning stroke data into lightning stroke voltage of a corresponding section; and the upper processing equipment carries out lightning monitoring on the track circuit according to the lightning strike voltage.
Specifically, the upper processing device is further configured to store the processed lightning strike data as historical data, and screen out a section lightning weak point according to the historical data; and the upper processing equipment is also used for displaying the lightning stroke data as a corresponding section lightning stroke data curve and carrying out lightning monitoring on the track circuit through the corresponding section lightning stroke data curve.
The thunder and lightning acquisition and processing equipment is totally divided into four parts, namely an acquisition unit, an acquisition processing unit, a communication unit and a light display unit. The acquisition unit is used for acquiring lightning stroke data of the track circuit; the acquisition processing unit is used for preprocessing the lightning stroke data, and the preprocessing comprises amplification and extraction; the communication unit is connected with the upper processing equipment and is used for sending the preprocessed lightning stroke data, clock information and the like to the upper processing equipment through a controller local area network; the lamp display unit is used for displaying the corresponding section information: green is normal, and red is the high potential of the line with transient surge.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (13)
1. A track circuit lightning monitoring method, characterized in that the method comprises:
lightning collecting and processing equipment collects lightning stroke data of a track circuit in a non-contact manner and preprocesses the lightning stroke data;
the lightning acquisition processing equipment sends the preprocessed lightning stroke data to upper processing equipment through a controller local area network;
the upper processing equipment receives the lightning stroke data and processes the lightning stroke data into lightning stroke voltage of a corresponding section;
and the upper processing equipment carries out lightning monitoring on the track circuit according to the lightning strike voltage.
2. The track circuit lightning monitoring method of claim 1,
the lightning strike data comprises pulse time, a lightning strike peak value and a lightning invasion path.
3. The track circuit lightning monitoring method of claim 1,
a collecting unit in the thunder and lightning collecting and processing equipment collects lightning stroke data of sensitive equipment in a non-contact mode, and the collecting unit is a non-contact electric field intensity sensor.
4. The track circuit lightning monitoring method of claim 3,
and the electric field intensity sensor acquires the lightning stroke data in an electric field coupling mode.
5. The track circuit lightning monitoring method of claim 1,
the lightning strike voltage includes a line-to-ground lightning strike voltage and a line-to-line lightning strike voltage.
6. The track circuit lightning monitoring method of claim 1, further comprising:
and the upper processing equipment stores the processed lightning stroke data as historical data and screens out section lightning weak points according to the historical data.
7. The track circuit lightning monitoring method of claim 1, further comprising:
and the upper processing equipment also displays the lightning stroke data into a corresponding section lightning stroke data curve, and carries out lightning monitoring on the track circuit through the corresponding section lightning stroke data curve.
8. The track circuit lightning monitoring system is characterized by comprising lightning acquisition and processing equipment and upper processing equipment:
the lightning acquisition and processing equipment is used for acquiring lightning stroke data of the track circuit in a non-contact manner and preprocessing the lightning stroke data; the lightning acquisition and processing equipment is also used for sending the preprocessed lightning strike data to upper processing equipment through a controller local area network;
the upper processing equipment is used for receiving the lightning stroke data and processing the lightning stroke data into lightning stroke voltage of a corresponding section; and the upper processing equipment carries out lightning monitoring on the track circuit according to the lightning strike voltage.
9. The track circuit lightning monitoring system of claim 8,
and the upper processing equipment is also used for storing the processed lightning strike data as historical data and screening out section lightning weak points according to the historical data.
10. The track circuit lightning monitoring system of claim 8,
and the upper processing equipment is also used for displaying the lightning stroke data as a corresponding section lightning stroke data curve and carrying out lightning monitoring on the track circuit through the corresponding section lightning stroke data curve.
11. The track circuit lightning monitoring system of claim 8,
the lightning acquisition and processing equipment comprises an acquisition unit, an acquisition and processing unit and a communication unit;
the acquisition unit is used for acquiring lightning stroke data of the track circuit;
the acquisition processing unit is used for preprocessing the lightning stroke data, and the preprocessing comprises amplification and extraction;
the communication unit is connected with the upper processing equipment and is used for sending the pre-processed lightning stroke data to the upper processing equipment through a controller local area network.
12. The track circuit lightning monitoring system of claim 11, wherein the lightning acquisition and processing device further comprises a light display unit,
the lamp display unit is used for displaying the corresponding section information.
13. The track circuit lightning monitoring system of claim 11,
the acquisition unit is a non-contact electric field intensity sensor.
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Application publication date: 20210910 |