CN214823324U - Comprehensive control system for rail potential of rail transit - Google Patents
Comprehensive control system for rail potential of rail transit Download PDFInfo
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- CN214823324U CN214823324U CN202121201031.5U CN202121201031U CN214823324U CN 214823324 U CN214823324 U CN 214823324U CN 202121201031 U CN202121201031 U CN 202121201031U CN 214823324 U CN214823324 U CN 214823324U
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Abstract
The utility model provides a comprehensive control system of rail transit rail potential, which comprises a server module, a plurality of intelligent monitoring modules, a plurality of potential limiting modules and a plurality of potential acquisition modules; the intelligent monitoring system comprises a plurality of intelligent monitoring modules, a plurality of potential acquisition modules, a plurality of potential limiting modules and a plurality of intelligent monitoring modules, wherein the intelligent monitoring modules are arranged in different track platforms; the potential limiting module is connected with the corresponding intelligent monitoring module, and the server module is connected with the intelligent monitoring modules and the potential acquisition module through the communication port. The system can realize the centralized monitoring of the rail potential along the rail transit and the centralized control of all the rail potential limiting modules along the rail transit, and all the intelligent monitoring modules along the whole rail transit are connected with the server module, so that information interaction is realized. Meanwhile, the system can be connected with the existing stray current monitoring system and the electric power monitoring system to perform information interaction, and comprehensive control of the steel rail potential is achieved jointly.
Description
Technical Field
The utility model belongs to the technical field of the track traffic, more specifically relates to a comprehensive control system of track traffic rail current potential.
Background
At present, a direct-current traction power supply system taking a running rail as a return rail is adopted for rail transit, and the voltage of the rail to earth inevitably exists when the rail is taken as an electrical unit of a traction power supply loop. Since the train body is usually equipotential with the rail. In order to protect passengers, rail potential limiting modules are usually installed at each station. One end of the device is connected with the steel rail, the other end of the device is connected with the ground, and when the device detects the potential of the steel rail which is possibly dangerous to passengers, the steel rail is immediately grounded (the potential of the steel rail is clamped to be the ground potential). The device can carry out permanent grounding and short-time grounding treatment on the steel rail by carrying out preset threshold value distinguishing according to the detected voltage. The too high rail potential can lead to the long-term shutting of rail potential restriction module, and rail ground connection can play the effect of protection passenger's personal safety, but the rail is as partly once ground connection of traction power supply system, must will produce a large amount of stray current and flow into the ground.
The existing rail potential limiting module is installed in a station substation, and only the unique judgment condition of the rail potential of the station can be used as the criterion condition for the device. When the device is reset (the connection between the steel rail and the ground is disconnected) after being locked depends on the operation habit of an operator, the operation information of each station rail potential device cannot be shared, and sudden input of one station rail potential device and the simultaneous operation of other station rail potential devices often occur during the operation period. Meanwhile, the level of real-time operation of the potential of the steel rail in the existing power supply system is blank, and the power monitoring background cannot acquire the data. The negative pole of the direct current traction power supply system becomes a blank of power monitoring. According to the requirements of IEC62128.2, the forward average voltage to ground of the rail is also a strict indicator of stray current protection leakage. The current stray current monitoring system can not effectively evaluate the potential of the steel rail and the leakage level of the stray current, and the leakage level of the stray current still has an unassablely evaluated state. Meanwhile, the existing stray current monitoring system can only monitor the polarization potential of a pre-buried reference electrode in the system, the input condition of a full-line steel rail potential device and the distribution condition of the full-line steel rail potential can not be obtained, and the existing stray current monitoring system can not make association with the system possibly because of the input of a steel rail potential limiting module to the generated stray current problem directly.
SUMMERY OF THE UTILITY MODEL
To the above defect of prior art or improve the demand, the utility model provides a comprehensive control system and method of track traffic rail potential, this system can realize carrying out the integrated management with track traffic all-wire station rail potential data and device. The system can collect electrical data of the grounding branch, potential data of the steel rail, device fault information and the like, and can perform data storage, processing and control signal issuing on the data and the information, and perform information interaction with a power supervisory control and data acquisition (SCADA) system and a stray current monitoring system.
In order to achieve the above object, according to the utility model discloses a first aspect provides a track traffic rail potential's integrated control system, the system includes: the system comprises a server module, a plurality of intelligent monitoring modules and a plurality of potential limiting modules; wherein the content of the first and second substances,
the plurality of potential limiting modules are distributed in different track areas; the intelligent monitoring modules are distributed in different track platforms, the intelligent monitoring modules are respectively connected with at least one potential limiting module, and the server module is connected with the intelligent monitoring modules through communication ports;
the potential limiting module comprises a direct current contactor, a thyristor, a first isolation transmitter and a second isolation transmitter; the input end of the intelligent monitoring module is connected with the first isolation transmitter and the second isolation transmitter, the output end of the intelligent monitoring module is connected with the direct current contactor, the direct current contactor and the thyristor are connected in parallel between the steel rail and the ground grid, and the direct current contactor executes opening and closing operations according to the instruction sent by the intelligent monitoring module.
Further, the system further comprises a plurality of potential acquisition modules, the potential acquisition modules are distributed in different track areas, and the intelligent monitoring modules are respectively connected with at least one potential acquisition module.
Further, the server module is connected with an external power monitoring system through a communication port.
Further, the server module is connected with an external stray current monitoring system through a communication port.
Furthermore, the system also comprises train sensing modules, wherein the train sensing modules are distributed in different track platforms, and the input ends of the train sensing modules are connected with the intelligent monitoring module.
Further, the system also comprises a system clock module, and the system clock module is connected with the intelligent monitoring module.
Further, the system also comprises a display terminal module, and the display terminal module is connected with the server module.
Further, the server module comprises a network switch unit, a disk array unit and a standby power supply unit.
In the existing traction power supply system, the rail potential limiting module acts as a single individual, and only the rail grounding processing can be performed through the judgment logic of the preset voltage threshold value by detecting the level of the local rail potential by the rail potential limiting module. And the utility model discloses an intelligent monitoring module realizes the centralized monitoring of each platform rail current potential of rail transit and concentrates the management and control to all rail current potential limiting module along the line. The beneficial results include:
the utility model provides a comprehensive control system for rail potential of rail transit; the system can record waves of the steel rail potentials of all stations along the line, and the steel rail potential limiting module is permanently grounded through the direct current contactor and the thyristor loop once detecting that the steel rail voltage exceeds a preset potential threshold, so that the monitored potential can be really judged to be the working voltage of the potential limiting module or the switching-on grounding overpotential of the potential limiting module by checking the recorded wave data through the server module, and a judgment basis is provided for switching-off of the steel rail potential limiting module.
Secondly, the utility model provides a comprehensive control system of rail transit rail potential; the system can be used for monitoring the steel rail potentials of all stations and all line sections along the line in a centralized manner, indirectly evaluating the leakage level of the stray current by calculating the maximum value, the average value and the minimum value of the steel rail potentials, and meanwhile, the data can be interacted with the data of the existing stray current monitoring system to form all-around monitoring, judging and managing of the stray current.
Thirdly, the utility model provides a comprehensive control system of rail transit rail potential; the system comprises an intelligent monitoring module, wherein the module can be accessed to an action signal of a platform screen door or a signal of arrival of a train and can be used for carrying out logic judgment on the acquired rail potential, and the grounding treatment on the abnormal rail potential which possibly endangers the installation of passengers can be realized only when the train is single-station. When no train exists in the station, the rail potential is used as an abnormal potential of the electric unit and does not need to be grounded. Because the insulation performance of the steel rail is directly damaged by grounding, a large amount of stray current is generated, and other hidden troubles are caused.
(IV) the utility model provides a comprehensive control system of rail transit rail potential; the server module of the system can interact with existing power monitoring Systems (SCADA) and stray current monitoring systems. On one hand, the grounding current of the steel rail potential limiting module can be comprehensively measured; on the other hand, once the module is grounded, the current flowing in the ground loop is always the stray current leaked by the system, and the current value can be directly used as the judgment index of the stray protection.
Drawings
Fig. 1 is a diagram illustrating a platform structure of a comprehensive control system for rail potential of rail transit according to the present invention;
fig. 2 is a schematic structural diagram of an integrated control system for realizing rail potential of rail transit according to the utility model.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
It should be noted that the term "first/second" in the present invention is used only for distinguishing similar objects, and does not represent a specific ordering for the objects, and it should be understood that "first/second" may be interchanged with a specific order or sequence if allowed. It should be understood that "first \ second" distinct objects may be interchanged under appropriate circumstances such that embodiments of the invention described herein may be practiced in sequences other than those described or illustrated herein.
Based on prior art, the utility model discloses a rail potentiometre integrated control system of a track traffic is established to realize the whole line station rail potential data of track traffic and device integrated management. The system can collect electrical data of the grounding branch, potential data of the steel rail, device fault information and the like, and can perform data storage, processing, control signal issuing and information interaction with a power monitoring System (SCADA) and a stray current monitoring system on the data and the information.
According to a concrete implementation mode, as shown in fig. 1, the utility model provides a comprehensive control system of track traffic rail potential, this system can realize the concentrated monitoring of rail potential along the track traffic and concentrate the management and control to all rail potential restriction modules along the line. And connecting all the intelligent monitoring modules of the whole line with the server to realize information interaction.
In this embodiment, the system includes: the system comprises a server module, a plurality of intelligent monitoring modules and a plurality of potential limiting modules, wherein the intelligent monitoring modules are distributed in different track platforms, and the potential limiting modules are distributed in different track areas; wherein the content of the first and second substances,
the plurality of potential limiting modules are used for acquiring first electrical data of different track stations in different track areas and sending the first electrical data to the corresponding intelligent monitoring modules; executing corresponding potential limiting operation according to a first instruction signal sent by the intelligent monitoring module;
the intelligent monitoring modules are respectively connected with the at least one potential limiting module and used for recording and coding the received first electrical data to form second electrical data and sending the second electrical data to the server module; meanwhile, a first instruction signal is formed according to the first electrical data and is sent to the potential limiting module;
the server module is connected with the intelligent monitoring modules through communication ports and used for receiving second electrical data uploaded by the intelligent monitoring modules in different areas; and simultaneously, the plurality of intelligent monitoring modules are monitored in real time to form a second instruction signal which is sent to the corresponding intelligent monitoring modules.
Specifically, as shown in fig. 2, the potential limiting module includes a dc contactor, a thyristor, a first isolation transmitter and a second isolation transmitter, which are all connected to the data acquisition unit; the first isolation transmitter and the second isolation transmitter are respectively used for detecting potential and current data between the steel rail and the ground screen to form first electrical data and send the first electrical data to the intelligent monitoring module; the intelligent monitoring module triggers a first instruction signal to be sent to the direct current contactor and the thyristor by judging whether the potential data value is larger than a preset potential threshold value or not; and the direct current contactor and the main loop port of the thyristor are bridged between the steel rail and the ground grid, and the direct current contactor and the main loop port of the thyristor execute opening and closing operations according to the first command signal. More specifically, the preset potential threshold value range is 0-600V.
Specifically, the server module triggers a second instruction signal to be sent to the intelligent monitoring module according to wave recording data of electric potential and current between the steel rail and the ground grid; the second instruction signal comprises setting a voltage threshold and time delay information of the potential limiting module.
In this embodiment, as shown in fig. 1, the intelligent monitoring module and the potential limiting module are configured in a matching manner; specifically, n sets of intelligent monitoring modules, n sets of potential limiting modules and a server module can be arranged along the rail transit, wherein n is more than or equal to 1; preferably, each traction substation along the track traffic is provided with a set of intelligent monitoring module and potential limiting module, and the intelligent monitoring module and the potential limiting module are matched and arranged in a platform along the track traffic; more preferably, at least one set of intelligent monitoring module and potential limiting module is arranged in each platform along the rail transit. The intelligent monitoring module and the potential limiting module in each station platform are communicated with the server through a communication network and perform information interaction, and monitoring and control of each rail potential limiting module are achieved.
The intelligent monitoring module is used for realizing switching-on and switching-off control of a direct current contactor and a thyristor in the potential limiting module, acquisition of internal voltage of the steel rail potential limiting module and signals of a current isolation transmitter, data compression and uploading; as shown in fig. 2, the first isolation transmitter is a voltage isolation transmitter and the second isolation transmitter is a galvanic isolation transmitter. In the prior art, the main topology of the rail potential limiting module includes a PLC unit (Programmable Logic Controller, abbreviated as PLC), a dc contactor, and a voltage and current isolation transmitter. The PLC unit collects the potential between the steel rail and the ground grid through the current and voltage isolation transmitter, judges whether to control the direct current contactor to open and close the brake through a preset voltage threshold value, and when the direct current contactor closes the brake, the steel rail is grounded. In the embodiment, by introducing the intelligent monitoring module, on one hand, partial functions of the PLC unit are replaced, and on the other hand, electrical data in the direct current contactor can be collected.
More specifically, the existing PLC unit may directly implement the functions of driving the dc contactor to switch on and switch off, but may not implement the function of collecting analog quantities such as voltage and current in the dc contactor. In the embodiment, the direct current contactor, the thyristor, the first isolation transmitter and the second isolation transmitter are all connected with the intelligent monitoring unit; therefore, the intelligent monitoring unit can drive the direct current contactor and the thyristor to be switched on and switched off, and can also acquire electric data such as potential data and current data detected by the first isolation transmitter and the second isolation transmitter; the electrical data comprises a measuring signal, a storage signal, a logic judgment and an information code, wherein the measuring signal comprises an analog signal and a digital signal. The intelligent monitoring module can collect the voltage and current data of the first and second isolation transmitters and record, store and encode the voltage and current data.
More specifically, the intelligent monitoring unit can directly collect the auxiliary contact information of the direct current contactor, the on-off position signal of the direct current contactor is directly collected through the on-off position signal of the auxiliary contact, the on-off position signal is a passive signal, and the communication device with the IO port can achieve the function. In this embodiment, the intelligent monitoring module is a comprehensive integrated device capable of collecting electrical data signals, on-off position signals and driving the on-off of the contactor, and meanwhile, the intelligent monitoring unit can send the collected electrical data signals and the collected on-off position signals to the server module in real time.
More specifically, as shown in fig. 2, the intelligent monitoring module may collect electrical data signals and separation/combination signals of the corresponding stations and send the electrical data signals and the separation/combination signals to the server module, where the electrical data signals include recording data of electric potential and electric current; triggering a second instruction signal to be sent to the intelligent monitoring module; the second instruction signal comprises setting a voltage threshold and time delay information of the potential limiting module. In this embodiment, through the remote control means that electric power monitored control system was used commonly, the voltage action value and the time to station rail potential restriction module are directly changed, and concrete means is that server module and intelligent monitoring module directly communicate and interact, and the situation of having communicated the message carries out, data change to local intelligent monitoring module, or can directly set up multiunit voltage, time value at local intelligent monitoring module, and server module carries out according to corresponding demand and can carry out the long-range switching.
The system further comprises a plurality of potential acquisition modules, the potential acquisition modules are distributed in different track areas, the intelligent monitoring modules are respectively connected with at least one potential acquisition module, and the potential acquisition modules are used for detecting third electrical data and fault information in the different track areas and sending the third electrical data and the fault information to the corresponding intelligent monitoring modules; the data acquisition unit of the intelligent monitoring module is also used for collecting the third electrical data and the fault information and uploading the third electrical data and the fault information to the server module; the third electrical data comprises a peak value, a voltage average value and a real-time dynamic value of the track potential.
More specifically, m sets of potential acquisition modules can be arranged along the track traffic, m is larger than or equal to n, preferably, a set of steel rail potential limiting module is arranged in each traction transformer along the track traffic, and a set of potential acquisition modules is arranged on the line every 500 meters or so. The intelligent monitoring module and a plurality of electric potential collection modules along the line are connected through communication or electric connection, the intelligent monitoring module can collect the information of the steel rail voltage collection module near the track along the line, the information comprises fault information of the voltage collection module and real-time measurement electric data information, and the real-time measurement electric data information comprises information such as a peak value, an average value and a real-time dynamic value of the steel rail voltage. And the intelligent monitoring module uploads the acquired fault information and the real-time measurement electrical data information to the server module.
Specifically, the server module is connected with an electric power monitoring system through a communication port, and the electric power monitoring system sends a third instruction signal to the server module through an interactive interface, so that the remote control of the potential limiting module is realized.
More specifically, the server module may interact with the power monitoring System (SCADA) for data. The association between the steel rail potential limiting module and the direct-current feeder circuit breaker of the substation is realized through interaction, and the potential limiting module is incorporated into one part of direct-current protection of the traction power supply system. When no train is in a station, effective action of the rail potential limiting module is ensured for a traction network to ground short circuit fault possibly caused by a direct current traction system.
Specifically, the server module is connected with a stray current monitoring system through a communication port, and the stray current monitoring system sends a fourth instruction signal to the server module through an interactive interface, so that the remote control of the potential limiting module is realized.
More specifically, the server module may interact with the stray current monitoring system. The rail transit station comprehensive management and control system has the advantages that all rail potential limiting modules of stations along the rail transit line are comprehensively controlled through interaction, and then the rail potential level of the comprehensive line, data information collected by a stray current monitoring system and the like are analyzed according to a stray current monitoring system background, so that switching-on and switching-off of a direct current contactor in each station rail potential limiting module are controlled. In this embodiment, intelligent monitoring module can insert the action signal of platform shield door or the signal of arriving at the station of train, carries out logic with gathering the rail potential and judges, can realize only when the train is single stand, carries out ground connection to the unusual rail potential that probably endangers passenger's installation. When no train exists in the station, the rail potential is used as an abnormal potential of the electric unit and does not need to be grounded. Because the insulation performance of the steel rail is directly damaged by grounding, a large amount of stray current is generated, and other hidden troubles are caused. In addition, once the rail limiting module is grounded, the current flowing in the grounding loop is always the stray current leaked by the system, and the current value can be directly used as the judgment index of the stray protection.
Therefore, the utility model provides a comprehensive control system of track traffic rail potential carries out dynamic management and real-time supervision with all rail potential restriction modules of subway line are unified, realizes more intelligent and reasonable action and the reset of rail potential restriction module, and the at utmost reduces because the problem of the stray current that the long-term action of rail potential restriction module brought. For better service stray current protection, the server module of the system can perform information interaction with the existing stray current monitoring system, and can interact with real-time data of the potential of the steel rail along the line and the specific situation of the potential action of the steel rail along the line.
The system further comprises train sensing modules, wherein the train sensing modules are distributed in different track platforms, the input ends of the train sensing modules are connected with the intelligent monitoring modules, and the train sensing modules are used for acquiring train departure signals and sending the train departure signals to the corresponding intelligent monitoring modules; the intelligent monitoring module is also used for receiving the train station leaving signal, forming a fifth instruction signal and sending the fifth instruction signal to the potential limiting module, and the direct current contactor of the potential limiting module executes switching-off operation.
More specifically, because grounding can directly damage the self insulation performance of the steel rail and generate a large amount of stray current to cause other hidden dangers, the intelligent monitoring module can acquire the running information of the train or the action information of a platform screen door in a station as the judgment logic for controlling the direct current contactor of the rail potential device; therefore, the grounding treatment of the abnormal rail potential which can endanger the installation of passengers is realized only when the train arrives at the station. When no train is in the station, the potential limiting module detects that abnormal potential exists and does not need to be grounded. In the implementation, the train-free signal in the interval can be logically judged with the steel rail potential signal. For example, the signal system can collect the position information of the train in real time when the train arrives at the station, and the signal can be directly acquired from the signal system. Or the arrival information of the train can be acquired through the opening signal of the platform screen door of the station platform, and the opening state of the screen door is the condition that the passenger gets on or off the train.
Specifically, the system further comprises a system clock module and a display terminal module, wherein the system clock module is connected with the intelligent monitoring module, and the display terminal module is connected with the server module.
More specifically, the intelligent monitoring module in the system is connected with the system clock module, and the intelligent monitoring module can receive the time information sent by the system clock module and uniformly upload the time information and corresponding monitoring data to the server module.
More specifically, the server module and the display terminal module in the system are connected, and the server module can be accessed through the interactive interface of the display terminal module, so that the relevant data information is selected, controlled and browsed. The server module forms reports for the rail potential and the grounding current of each station and dynamically monitors the rail voltage of all point positions along the line, and the reports can be operated and processed through the interactive interface of the display terminal module.
Specifically, the server module comprises a network switch unit, a disk array unit and a standby power supply unit. More specifically, a set of central service module groups is provided in this embodiment, which manages and controls all the intelligent monitoring modules along the line, and implements various control functions and data acquisition projects. The central server module group comprises a network switch, a disk array, a standby power supply and the like of a system networking.
Specifically, the innovation provided by the embodiment is not limited to the above contents, but is limited to performing networking management on all existing rail potential modules, and meanwhile, the embodiment relates to an intelligent monitoring module for controlling rail potential. More specifically, each intelligent monitoring module needs to be provided with a port supporting the same communication protocol, the intelligent control module supports but is not limited to communication protocols such as Profibus, Modbus, IEC60870-5-103 and IEC61850, and meanwhile, the intelligent control module is provided with a server module for controlling a rail potential limiting module, collecting fault information, collecting rail potentials in a multi-channel mode, compressing data, transcoding and uploading the rail potentials to a central level.
More specifically, the communication network between each intelligent monitoring module and the central server module may be a single network structure or a redundant dual network structure.
According to another specific embodiment of the present invention, there is provided a rail potential integrated control method for rail transit, the method including:
providing the comprehensive control system of the rail potential of the rail transit;
the potential limiting modules acquire first electrical data and send the first electrical data to corresponding intelligent monitoring modules;
the intelligent monitoring module forms a first instruction signal according to the first electrical data and sends the first instruction signal to the potential limiting module; simultaneously, the received first electrical data is subjected to wave recording and encoding to form second electrical data, and the second electrical data is sent to the server module;
the server module receives second electrical data uploaded by the intelligent monitoring modules in different areas through a communication port; and simultaneously forming a second instruction signal and sending the second instruction signal to the corresponding intelligent monitoring module.
The specific technical content is the same as that of the above embodiments, and therefore, the detailed description thereof is omitted.
According to another specific embodiment of the present invention, there is provided a computer readable medium storing a computer program executed by an electronic device, wherein when the computer program runs on the electronic device, the electronic device is enabled to execute the rail potential integrated control method for rail transit as described above.
It is to be understood that any process or method descriptions in the flowcharts of the present invention or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and that the scope of the preferred embodiments of the present invention includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present invention.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware that is related to instructions of a program, and the program may be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.
In addition, each functional unit in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a separate product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. An integrated control system for rail potential of rail transit, characterized in that the system comprises: the system comprises a server module, a plurality of intelligent monitoring modules and a plurality of potential limiting modules; wherein the content of the first and second substances,
the plurality of potential limiting modules are distributed along the rail transit line; the intelligent monitoring modules are distributed on the rail transit platform, and each intelligent monitoring module is connected with at least one potential limiting module; the server module is connected with the plurality of intelligent monitoring modules through communication ports;
the potential limiting module comprises a direct current contactor, a thyristor, a first isolation transmitter and a second isolation transmitter; the input end of the intelligent monitoring module is connected with the first isolation transmitter and the second isolation transmitter, the output end of the intelligent monitoring module is connected with the direct current contactor, the direct current contactor and the thyristor are connected in parallel between the steel rail and the ground grid, and the direct current contactor executes opening and closing operations according to the instruction sent by the intelligent monitoring module.
2. The comprehensive control system for rail potential of rail transit according to claim 1, further comprising a plurality of potential collection modules, wherein the plurality of potential collection modules are distributed in different rail areas, and the plurality of intelligent monitoring modules are respectively connected with at least one potential collection module.
3. The integrated rail transit rail potential control system of claim 1, wherein the server module is connected to an external power monitoring system through a communication port.
4. The integrated control system for rail potential of rail transit according to claim 1, wherein the server module is connected with an external stray current monitoring system through a communication port.
5. The integrated control system for rail potential of rail transit according to claim 1, further comprising train sensing modules, wherein the train sensing modules are distributed in different rail platforms, and input ends of the train sensing modules are connected with the intelligent monitoring module.
6. The integrated control system for rail transit rail potential according to claim 1, further comprising a system clock module, wherein the system clock module is connected with the intelligent monitoring module.
7. The integrated control system for rail potential of rail transit according to claim 1, further comprising a display terminal module, wherein the display terminal module is connected with the server module.
8. The integrated control system for rail transit rail potential of claim 1, wherein the server module comprises a network switch unit, a disk array unit and a standby power supply unit.
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