A comprehensive control system and method for rail transit rail potential

Abstract

The present invention provides a comprehensive control system and method for the potential of rail transit rails, the system comprising a server module, a plurality of intelligent monitoring modules, a plurality of potential limiting modules and a plurality of potential acquisition modules; wherein the plurality of intelligent monitoring modules are arranged in different rail platforms, and the plurality of potential acquisition modules and the plurality of potential limiting modules are respectively distributed along the rails; the potential limiting modules are connected to the corresponding intelligent monitoring modules, and the server module is connected to the plurality of intelligent monitoring modules and the potential acquisition modules through a communication port. The system can realize the centralized monitoring of the potential of rails along the rail transit line and the centralized control of all the potential limiting modules of the rails along the line, and connect all the intelligent monitoring modules and the server module of the whole line to realize information interaction. At the same time, the system can also be connected with the existing stray current monitoring system and the power monitoring system for information interaction, and jointly realize the comprehensive control of the potential of the rails.

Description

Technical Field

[0001] The present invention belongs to the field of rail transit technology, and more specifically, relates to a comprehensive control system and method for rail transit rail potential. Background Art

[0002] At present, rail transit uses a DC traction power supply system with running rails serving as return rails. Because the rails are the electrical units of the traction power supply circuit, there will inevitably be rail-to-ground voltage. Since the train body is usually at the same potential as the rails. In order to protect the safety of passengers, a rail potential limiting module is usually installed at each station. The device is connected to the rails at one end and to the ground at the other end. When the device detects a rail potential that may endanger the safety of passengers, the rails are immediately grounded (the rail potential is clamped to the ground potential). The device distinguishes between permanent grounding and short-term grounding of the rails based on the pre-set threshold value of the detected voltage. Excessive rail potential will cause long-term locking of the rail potential limiting module. Although rail grounding can protect the personal safety of passengers, once the rails are grounded as part of the traction power supply system, a large amount of stray current will flow into the ground.

[0003] The existing rail potential limiting module is installed in the station substation, and can only use the unique judgment condition of the rail potential of the station as the judgment condition for the device to be put into use. When the device will be reset after being locked (disconnecting the rail from the ground) depends on the operating habits of the operating personnel, and the operation information of the rail potential devices of each station cannot be shared with each other. During operation, it is often the case that the sudden operation of the rail potential device of one station affects the simultaneous operation of the rail potential devices of other stations. At the same time, there is a gap in the level of real-time operation of the rail potential in the existing power supply system, and the power monitoring background cannot obtain the data. The negative pole of the DC traction power supply system has become a blank in power monitoring. According to the requirements of IEC62128.2, the average forward voltage of the rail to the ground is also a strict indicator for considering stray current protection leakage. The current stray current monitoring system is also unable to effectively evaluate the rail potential and stray current leakage level, and the stray current leakage level is still in an unassessable state. At the same time, the existing stray current monitoring system can only monitor the polarization potential of the reference electrode embedded in the system, and cannot obtain the input status of the rail potential device of the entire line and the distribution of the rail potential of the entire line. The existing stray current monitoring system cannot make a connection with the stray current problem that may be directly caused by the input of the rail potential limiting module. Summary of the invention

[0004] In view of the above defects or improvement needs of the prior art, the present invention provides a comprehensive control system and method for rail transit rail potential, which can realize the comprehensive management of rail potential data and devices of all stations on the rail transit line. The system can collect grounding branch electrical data, rail potential data, device fault information, etc., and store, process, send control signals, and interact with the power monitoring system (SCADA) and stray current monitoring system.

[0005] To achieve the above-mentioned purpose, according to the first aspect of the present invention, a comprehensive control system for rail potential of rail transit is provided, the system comprising: a server module, a plurality of intelligent monitoring modules, and a plurality of potential limiting modules; the plurality of intelligent monitoring modules are distributed and arranged at the rail transit platform, and the plurality of potential limiting modules are distributed and arranged along the rail transit line; wherein,

[0006] The multiple potential limiting modules are used to obtain first electrical property data of different rail platforms in the area along the rail and send them to the corresponding intelligent monitoring modules; and perform corresponding potential limiting operations according to the first command signal sent by the intelligent monitoring module;

[0007] The multiple intelligent monitoring modules are respectively connected to at least one potential limiting module, and are used to record and encode the received first electrical data to form second electrical data and send it to the server module; at the same time, a first command signal is formed according to the first electrical data and sent to the potential limiting module;

[0008] The server module is connected to the multiple intelligent monitoring modules through a communication port, and is used to receive the second electrical data of different areas uploaded by the multiple intelligent monitoring modules; at the same time, the multiple intelligent monitoring modules are monitored in real time, and a second command signal is generated and sent to the corresponding intelligent monitoring modules.

[0009] Furthermore, the potential limiting module includes a DC contactor, a thyristor, a first isolation transmitter and a second isolation transmitter, all of which are connected to the intelligent monitoring module; the first and second isolation transmitters are respectively used to detect the potential and current data between the rail and the ground grid, form first electrical data and send them to the intelligent monitoring module; the intelligent monitoring module triggers a first command signal to be sent to the DC contactor and the thyristor by determining whether the potential data value is greater than a preset potential threshold; the main circuit ports of the DC contactor and the thyristor are connected across the rail and the ground grid, and they perform opening and closing operations according to the first command signal.

[0010] Furthermore, the server module triggers a second command signal to be sent to the intelligent monitoring module based on the recorded data of the potential and current between the rail and the ground grid; the second command signal includes setting the voltage threshold and time delay information of the potential limiting module.

[0011] Furthermore, the system also includes a plurality of potential acquisition modules, which are distributed in the area along the track and are used to detect the third electrical data and fault information in the area along the track and send them to the corresponding intelligent monitoring module; the intelligent monitoring module is also used to collect the third electrical data and fault information and upload them to the server module; the third electrical data includes the peak value, average voltage and real-time dynamic value of the track potential.

[0012] Furthermore, the server module is connected to the power monitoring system via a communication port, and the power monitoring system sends a third command signal to the server module via an interactive interface, thereby realizing remote control of the potential limiting module.

[0013] Furthermore, the server module is connected to the stray current monitoring system via a communication port, and the stray current monitoring system sends a fourth instruction signal to the server module via an interactive interface, thereby realizing remote control of the potential limiting module.

[0014] Furthermore, the system also includes a train sensing module, which is used to obtain a train departure signal and send it to a corresponding intelligent monitoring module; the intelligent monitoring module is also used to receive the train departure signal, form a fifth command signal and send it to the potential limiting module, and the DC contactor of the potential limiting module performs an opening operation.

[0015] Furthermore, the system also includes a system clock module and a display terminal module, the system clock module is connected to the intelligent monitoring module, and the display terminal module is connected to the server module.

[0016] Furthermore, the server module includes a network switch unit, a disk array unit and a backup power supply unit.

[0017] According to a second aspect of the present invention, a comprehensive control method for rail potential of rail transit is provided, which is applied to the comprehensive control system for rail potential of rail transit as described above, and the method comprises:

[0018] The multiple potential limiting modules acquire first electrical property data and send them to corresponding intelligent monitoring modules;

[0019] The intelligent monitoring module generates a first command signal according to the first electrical data and sends it to the potential limiting module; at the same time, the received first electrical data is recorded and encoded to generate second electrical data and send it to the server module;

[0020] The server module receives the second electrical data of different areas uploaded by the multiple intelligent monitoring modules through the communication port; and simultaneously forms a second command signal and sends it to the corresponding intelligent monitoring module.

[0021] In the existing traction power supply system, the rail potential limiting module acts as a separate individual and can only detect the level of local rail potential by itself and perform rail grounding processing through the preset voltage threshold judgment logic. The present invention realizes the centralized monitoring of rail potential of each platform of rail transit and the centralized control of all rail potential limiting modules along the line through the intelligent monitoring module. The beneficial results include:

[0022] (1) The present invention provides a comprehensive control system for rail transit rail potential; the system can record the rail potential of all stations along the line, because once the rail potential limiting module detects that the rail voltage exceeds the preset potential threshold, it will be permanently grounded through the DC contactor and the thyristor circuit. By checking the recorded data through the server module, it can be truly determined whether the monitored potential is the working voltage of the potential limiting module or the over-potential of the potential limiting module during the closing and grounding operation, thereby providing a judgment basis for the opening of the rail potential limiting module.

[0023] (ii) The present invention provides a comprehensive control system for rail transit rail potential; the system can centrally monitor the rail potential of all stations along the line and the entire line section, and indirectly evaluate the leakage level of stray current by calculating the maximum, average and minimum values ​​of the rail potential. At the same time, the data can interact with the data of the existing stray current monitoring system to form an all-round monitoring, analysis and control of stray current.

[0024] (III) The present invention provides a comprehensive control system for rail transit rail potential; the system includes an intelligent monitoring module, which can access the action signal of the platform screen door or the arrival signal of the train, and perform logical judgment with the collected rail potential, so as to realize grounding of abnormal rail potential that may endanger the passengers only when the train is at a single station. When there is no train in the station, the rail potential, as an electrical unit, has an abnormal potential and does not need to be grounded. Because grounding will directly destroy the insulation performance of the rail itself, generating a large amount of stray current and causing other hidden dangers.

[0025] (IV) The present invention provides a comprehensive control system for rail transit rail potential; the server module of the system can exchange data with the existing power monitoring system (SCADA) and stray current monitoring system. On the one hand, the grounding current of the rail potential limiting module can be comprehensively measured; on the other hand, once the module is grounded, the current flowing in the grounding loop must be the stray current leaked by the system, and the current value can be directly used as a judgment indicator for stray protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 An example diagram of a platform structure for realizing a comprehensive control system for rail potential of rail transit according to the present invention;

[0027] Figure 2 The present invention is a schematic structural diagram of a comprehensive control system for rail potential in rail transit. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0029] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0030] It should be noted that the terms "first\second" used in the present invention are only used to distinguish similar objects, and do not represent a specific order for the objects. It is understandable that "first\second" can be interchanged with a specific order or sequence where permitted. It should be understood that the objects distinguished by "first\second" can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those described or illustrated herein.

[0031] Based on the existing technology, the present invention creates a rail potential device integrated control system for rail transit, thereby realizing the integrated management of rail potential data and devices of all stations on the rail transit line. The system can collect grounding branch electrical data, rail potential data, device fault information, etc., and store, process, send control signals, and interact with power monitoring (SCADA) and stray current monitoring systems.

[0032] According to a specific implementation mode, Figure 1As shown, the present invention provides a comprehensive control system for rail potential of rail transit, which can realize centralized monitoring of rail potential along the rail transit line and centralized control of all rail potential limiting modules along the line. All intelligent monitoring modules along the line are connected to the server to realize information interaction.

[0033] In this embodiment, the system includes: a server module, a plurality of intelligent monitoring modules, and a plurality of potential limiting modules, wherein the plurality of intelligent monitoring modules are distributed at the rail transit platform, and the plurality of potential limiting modules are distributed along the rail transit line; wherein,

[0034] The multiple potential limiting modules are used to obtain first electrical property data of different rail platforms in the area along the rail and send them to the corresponding intelligent monitoring modules; and perform corresponding potential limiting operations according to the first command signal sent by the intelligent monitoring module;

[0035] The multiple intelligent monitoring modules are respectively connected to at least one potential limiting module, and are used to record and encode the received first electrical data to form second electrical data and send it to the server module; at the same time, a first command signal is formed according to the first electrical data and sent to the potential limiting module;

[0036] The server module is connected to the multiple intelligent monitoring modules through a communication port, and is used to receive the second electrical data of different areas uploaded by the multiple intelligent monitoring modules; at the same time, the multiple intelligent monitoring modules are monitored in real time, and a second command signal is generated and sent to the corresponding intelligent monitoring modules.

[0037] Specifically, if Figure 2 As shown, the potential limiting module includes a DC contactor, a thyristor, a first isolation transmitter and a second isolation transmitter, all of which are connected to the intelligent monitoring module; the first and second isolation transmitters are used to detect the potential and current data between the rail and the ground grid, respectively, to form first electrical data and send them to the intelligent monitoring module; the intelligent monitoring module determines whether the potential data value is greater than a preset potential threshold, triggers a first command signal to be sent to the DC contactor and the thyristor; the main circuit ports of the DC contactor and the thyristor are connected across the rail and the ground grid, and they perform opening and closing operations according to the first command signal. More specifically, the preset potential threshold value ranges from 0 to 600V.

[0038] Specifically, the server module triggers a second command signal to be sent to the intelligent monitoring module based on the recorded data of the potential and current between the rail and the ground grid; the second command signal includes setting the voltage threshold and time delay information of the potential limiting module.

[0039] In this embodiment, Figure 1, the intelligent monitoring module and the potential limiting module are arranged in a matching manner; specifically, n sets of intelligent monitoring modules and n sets of potential limiting modules and a server module can be arranged along the rail transit line, n ≥ 1; preferably, each traction substation along the rail transit line is provided with a set of intelligent monitoring modules and potential limiting modules, and the intelligent monitoring modules and potential limiting modules are arranged in a matching manner in the platforms along the rail transit line; more preferably, at least one set of intelligent monitoring modules and potential limiting modules are arranged in each platform along the rail transit line. The intelligent monitoring modules and potential limiting modules in each platform communicate and exchange information with the server through the communication network to realize the monitoring and control of each rail potential limiting module.

[0040] Specifically, the intelligent monitoring module is used to realize the opening and closing control of the DC contactor and thyristor in the potential limiting module, the collection, data compression and uploading of the internal voltage and current isolation transmitter signals of the rail potential limiting module; Figure 2 As shown, the first isolation transmitter is a voltage isolation transmitter, and the second isolation transmitter is a current isolation transmitter. In the prior art, the main topology of the rail potential limiting module includes a PLC unit (Programmable Logic Controller, PLC in English), a DC contactor, and a voltage and current isolation transmitter. The PLC unit collects the potential between the rail and the ground grid through the current and voltage isolation transmitter, and determines whether to control the DC contactor to open and close the gate through a preset voltage threshold. When the DC contactor closes the gate, the rail is grounded. In this embodiment, by introducing an intelligent monitoring module, on the one hand, it replaces part of the functions of the PLC unit, and on the other hand, it can collect electrical data in the DC contactor.

[0041] More specifically, the existing PLC unit can directly realize the function of driving the DC contactor to close and open, but cannot realize the function of collecting analog quantities such as voltage and current in the DC contactor. In this embodiment, the DC contactor, thyristor, first isolation transmitter and second isolation transmitter are all connected to the intelligent monitoring unit; therefore, the intelligent monitoring unit can not only drive the DC contactor and thyristor to close and open, but also collect electrical data such as potential data and current data detected by the first isolation transmitter and the second isolation transmitter; wherein, the electrical data includes measurement signals, storage signals, logical judgments and information encoding, and the measurement signals include analog signals and digital signals. The intelligent monitoring module can not only collect the voltage and current data of the first and second isolation transmitters, but also record, store and encode the voltage and current data.

[0042] More specifically, the intelligent monitoring unit can directly collect the auxiliary contact information of the DC contactor, and directly collect the opening and closing position signal of the DC contactor through the opening and closing position signal of the auxiliary contact. This is a passive signal, and any communication device with an IO port can achieve this function. In this embodiment, the intelligent monitoring module is a comprehensive integrated device that can collect contactor electrical data signals, opening and closing position signals, and drive the contactor to open and close. At the same time, the intelligent monitoring unit can send the collected electrical data signals and opening and closing position signals to the server module in real time.

[0043] More specifically, if Figure 2 As shown, the intelligent monitoring module can collect the electrical data signals and the opening and closing position signals of the corresponding platform and send them to the server module. The electrical data signals include the recorded data of the potential and current; trigger the second command signal to be sent to the intelligent monitoring module; the second command signal includes setting the voltage threshold and time delay information of the potential limiting module. In this embodiment, the voltage action value and time of the station rail potential limiting module are directly changed by the remote control means commonly used in the power monitoring system. The specific means is that the server module and the intelligent monitoring module directly communicate and interact, and the local intelligent monitoring module is changed according to the situation of the communication message, or multiple groups of voltage and time values ​​can be directly set in the local intelligent monitoring module, and the server module can be remotely switched according to the corresponding needs.

[0044] Specifically, the system also includes multiple potential acquisition modules, which are distributed in the area along the track and are used to detect third electrical data and fault information in the area along the track and send them to the corresponding intelligent monitoring module; the intelligent monitoring module is also used to collect the third electrical data and fault information and upload them to the server module; the third electrical data includes the peak value, average voltage and real-time dynamic value of the track potential.

[0045] More specifically, m sets of potential collection modules can be set up along the rail transit line, m ≥ n. Preferably, each traction substation along the rail transit line is provided with a set of rail potential limiting modules, and a set of potential collection modules is provided every 500 meters or so. The intelligent monitoring module is connected to multiple potential collection modules along the line through communication or electrical connection. The intelligent monitoring module can collect information from the rail voltage collection module near the track line, which includes fault information of the voltage collection module and real-time measured electrical data information. The real-time measured electrical data information includes the peak value, average value, real-time dynamic value and other information of the rail voltage. The intelligent monitoring module then uploads the collected fault information and real-time measured electrical data information to the server module.

[0046] Specifically, the server module is connected to the power monitoring system via a communication port, and the power monitoring system sends a third instruction signal to the server module via an interactive interface, thereby realizing remote control of the potential limiting module.

[0047] More specifically, the server module can exchange data with the power monitoring system (SCADA). Through interaction, the rail potential limiting module is associated with the DC feeder circuit breaker of the substation, and the potential limiting module is incorporated into the DC protection of the traction power supply system. When there is no train in the station, the effective action of the rail potential limiting module should be ensured for the traction network short circuit fault that may occur due to the DC traction system.

[0048] Specifically, the server module is connected to the 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, thereby realizing remote control of the potential limiting module.

[0049] More specifically, the server module can interact with the stray current monitoring system for data. Through interaction, all rail potential limiting modules of stations along the rail transit line can be comprehensively controlled, and then the rail potential level of the integrated line and the data information collected by the stray current monitoring system can be analyzed in the background of the stray current monitoring system, so as to control the closing and opening of the DC contactor in the rail potential limiting module of each station. In this embodiment, the intelligent monitoring module can access the action signal of the platform screen door or the arrival signal of the train, and make a logical judgment with the collected rail potential, so that the abnormal rail potential that may endanger the passenger installation can be grounded only when the train is at a single station. When there is no train in the station, the rail potential as an electrical unit has an abnormal potential and does not need to be grounded. Because grounding will directly destroy the insulation performance of the rail itself, a large amount of stray current will be generated, causing other hidden dangers. In addition, once the rail limiting module is grounded, the current flowing in the grounding loop must be the stray current leaked by the system, and the current value can be directly used as a judgment indicator for stray protection.

[0050] Therefore, the integrated control system for rail transit rail potential provided by the present invention dynamically manages and monitors all rail potential limiting modules of the subway line in a unified manner, realizes more intelligent and reasonable action and reset of the rail potential limiting module, and minimizes the problem of stray current caused by long-term action of the rail potential limiting module. In order to better serve the stray current protection, the server module of this system can exchange information with the existing stray current monitoring system, and can interact with it with the real-time data of the rail potential along the line and the specific situation of the rail potential action along the line.

[0051] Specifically, the system also includes a train sensing module, which is used to obtain a train departure signal and send it to a corresponding intelligent monitoring module; the intelligent monitoring module is also used to receive the train departure signal, form a fifth command signal and send it to the potential limiting module, and the DC contactor of the potential limiting module performs an opening operation.

[0052] More specifically, because grounding will directly destroy the insulation performance of the rail itself and generate a large amount of stray current, causing other hidden dangers, the intelligent monitoring module can obtain the train operation information or the action information of the platform shield door in the station as the judgment logic of the DC contactor of the control rail potential device; thereby achieving grounding treatment of abnormal rail potential that may endanger the passenger installation only when the train arrives at the station. When there is no train in the station, the potential limiting module does not need to perform grounding treatment when detecting the existence of abnormal potential. In this implementation, the signal of no train in the section can be logically judged with the rail potential signal. For example, when the train arrives at the station, the signal system can collect the train's location information in real time, and this signal can be directly obtained from the signal system. Or the train arrival information can be obtained through the opening signal of the platform shield door on the station platform, and the shield door is open only when passengers get on and off the train.

[0053] Specifically, the system further includes a system clock module and a display terminal module. The system clock module is connected to the intelligent monitoring module, and the display terminal module is connected to the server module.

[0054] More specifically, the intelligent monitoring module in the system is connected to the system clock module, and the intelligent monitoring module can receive time information sent by the system clock module, and upload the time information and corresponding monitoring data to the server module in a unified manner.

[0055] 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 as to select, control and browse the relevant data information. The server module generates reports on the rail potential and grounding current of each station and dynamically monitors the rail voltage at all points along the line, which can be operated and processed through the interactive interface of the display terminal module.

[0056] Specifically, the server module includes a network switch unit, a disk array unit and a backup power supply unit. More specifically, in this embodiment, a set of central-level service module groups are set up to manage and control all intelligent monitoring modules along the line and realize various control functions and data collection projects. The central-level server module group includes a network switch, a disk array, a backup power supply, etc. of the system network.

[0057] Specifically, the innovation proposed in this embodiment is not limited to the networking management of all existing rail potential modules in the above content, and this embodiment also involves an intelligent monitoring module for controlling rail potential. More specifically, each intelligent monitoring module needs to have a port that supports 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 has a server module for controlling the rail potential limit module, collecting fault information, collecting rail potential in multiple channels, compressing data, transcoding, and uploading to the center level.

[0058] More specifically, the communication network between each intelligent monitoring module and the central-level server module may be a single-network structure or a redundant dual-network structure.

[0059] According to another specific embodiment of the present invention, a rail potential comprehensive control method for rail transportation is provided, the method comprising:

[0060] Providing a comprehensive control system for rail potential of rail transit as described above;

[0061] The multiple potential limiting modules acquire first electrical property data and send them to corresponding intelligent monitoring modules;

[0062] The intelligent monitoring module generates a first command signal according to the first electrical data and sends it to the potential limiting module; at the same time, the received first electrical data is recorded and encoded to generate second electrical data and send it to the server module;

[0063] The server module receives the second electrical data of different areas uploaded by the multiple intelligent monitoring modules through the communication port; and simultaneously forms a second command signal and sends it to the corresponding intelligent monitoring module.

[0064] The specific technical content is the same as that of the above-mentioned embodiment, so it will not be repeated here.

[0065] According to another specific embodiment of the present invention, a computer readable medium is provided, which stores a computer program executed by an electronic device. When the computer program runs on the electronic device, the electronic device executes the comprehensive control method of rail potential of rail transit as described above.

[0066] It should be understood that any process or method description in the flowchart of the present invention or otherwise described herein may be understood to represent a module, fragment or portion of code including one or more executable instructions for implementing the steps of a specific logical function or process, and that the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present invention belong.

[0067] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0068] A person skilled in the art may understand that all or part of the steps in the above-mentioned embodiment method may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0069] In addition, each functional unit in each embodiment of the present invention may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0070] The storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk, etc.

[0071] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. Those skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A comprehensive control system for rail transit rail potential, characterized in that: The system includes: a server module, a plurality of intelligent monitoring modules, and a plurality of potential limiting modules; wherein, The multiple potential limiting modules are distributed along the rail transit line, and are used to obtain the first electrical property data of the rails in different areas along the rail transit line, and send it to the intelligent monitoring module; and perform corresponding potential limiting operations according to the first command signal sent by the intelligent monitoring module; The multiple intelligent monitoring modules are distributed in the rail transit platform, and each of the intelligent monitoring modules is connected to multiple potential limiting modules, and is used to record and encode the received first electrical data to form second electrical data and send it to the server module; and form a first command signal according to the first electrical data and send it to the potential limiting module; The server module is connected to the multiple intelligent monitoring modules through a communication port, and is used to receive the second electrical property data of rails in different areas uploaded by the multiple intelligent monitoring modules; and monitor the multiple intelligent monitoring modules in real time, and form a second command signal to send to the corresponding intelligent monitoring module; The potential limiting module includes a DC contactor, a thyristor, a first isolation transmitter and a second isolation transmitter, all of which are connected to the intelligent monitoring module; the first and second isolation transmitters are respectively used to detect the potential and current data between the rail and the ground grid, and form first electrical data to be sent to the intelligent monitoring module; the intelligent monitoring module triggers a first command signal to be sent to the DC contactor and the thyristor by determining whether the potential data value is greater than a preset potential threshold; the main circuit ports of the DC contactor and the thyristor are connected across the rail and the ground grid, and they perform opening and closing operations according to the first command signal; The server module triggers a second command signal to be sent to the intelligent monitoring module based on the recorded data of the potential and current between the rail and the ground grid; the second command signal includes setting the voltage threshold and time delay information of the potential limiting module.

2. The integrated control system for rail potential of rail transit according to claim 1, characterized in that: The system also includes multiple potential acquisition modules, which are distributed in the area along the track and are used to detect third electrical data and fault information in the area along the track and send them to the corresponding intelligent monitoring module; the intelligent monitoring module is also used to collect the third electrical data and fault information and upload them to the server module; the third electrical data includes the peak value, average voltage and real-time dynamic value of the track potential.

3. The integrated control system for rail potential of rail transit according to claim 1, characterized in that: The server module is connected to the power monitoring system via a communication port, and the power monitoring system sends a third instruction signal to the server module via an interactive interface, thereby realizing remote control of the potential limiting module.

4. The integrated control system for rail potential of rail transit according to claim 1, characterized in that: The server module is connected to the stray current monitoring system via a communication port, and the stray current monitoring system sends a fourth instruction signal to the server module via an interactive interface, thereby realizing remote control of the potential limiting module.

5. The integrated control system for rail potential of rail transit according to claim 1, characterized in that: The system also includes a train sensing module, which is used to obtain a train departure signal and send it to a corresponding intelligent monitoring module; the intelligent monitoring module is also used to receive the train departure signal, form a fifth command signal and send it to the potential limiting module, and the DC contactor of the potential limiting module performs an opening operation.

6. The integrated control system for rail potential of rail transit according to claim 1, characterized in that: The system further comprises a system clock module and a display terminal module, wherein the system clock module is connected to the intelligent monitoring module, and the display terminal module is connected to the server module.

7. The integrated control system for rail potential of rail transit according to claim 1, characterized in that: The server module includes a network switch unit, a disk array unit and a backup power supply unit.

8. A comprehensive control method for rail transit rail potential, characterized in that: The integrated control system for rail transit rail potential as described in any one of claims 1 to 7 above, the method comprising: The multiple potential limiting modules acquire first electrical property data and send them to corresponding intelligent monitoring modules; The intelligent monitoring module generates a first command signal according to the first electrical data and sends it to the potential limiting module; at the same time, the received first electrical data is recorded and encoded to generate second electrical data and send it to the server module; The server module receives the second electrical data of different areas uploaded by the multiple intelligent monitoring modules through the communication port; and simultaneously forms a second command signal and sends it to the corresponding intelligent monitoring module.

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