Traction reflux status wide area monitoring system

Abstract

The present disclosure relates to a wide-area monitoring system for traction return flow status, including: three return flow signal acquisition power supplies, three return flow signal sending units and a processing unit; the first return flow signal acquisition unit is used to collect the return flow electrical signal of the traction station and transmit it to the first return flow signal sending unit in real time; the second return flow signal acquisition unit is used to collect the return flow electrical signal of the AT station and transmit it to the second return flow signal sending unit in real time; the third return flow signal acquisition unit is used to collect the return flow electrical signal of the sub-station and transmit it to the third return flow signal sending unit in real time; the first return flow signal sending unit, the second return flow signal sending unit and the third return flow signal sending unit synchronize and send the collected return flow electrical signals to the processing unit; the processing unit is used to determine the traction return flow status according to the return flow electrical signal and issue a prompt when the return flow is abnormal. The technology provided by the embodiments of the present disclosure can realize the wide-area monitoring of the traction return flow status of the electrified railway.

Description

Technical Field

[0001] The present disclosure relates to the technical field of traction return flow of electrified railways, and in particular to a wide-area monitoring system for traction return flow status. Background Art

[0002] In recent years, the mileage of electrified railways has developed rapidly. Electric traction is the only mode of transportation that can replace oil with electricity, and its energy advantages are very obvious.

[0003] In the traction power supply system, AC, DC and AC electric locomotives have the characteristics of large traction load, high line departure density and high locomotive load rate. The requirements for the current carrying capacity and smoothness of the traction return system composed of rails and related conductors are constantly increasing. Based on this, once the traction return path is blocked, it will lead to unreasonable distribution of rail return, ground return and other conductor return. On the one hand, it will cause the rail potential to rise, causing malfunction or failure of signal equipment near the track, posing a certain threat to the safety of personnel along the line; on the other hand, too much ground return in the traction station will also cause the metal conductor of the ground grid to heat up and burn, causing grounding safety problems. Summary of the invention

[0004] In order to solve the above technical problems or at least partially solve the above technical problems, the present disclosure provides a wide-area monitoring system for traction return status, so as to synchronously collect return electrical signals in a wide area including traction stations, AT stations and sub-stations, and realize real-time monitoring of the traction return status of electrified railways to ensure equipment safety and personal safety.

[0005] The present disclosure provides a traction backflow state wide-area monitoring system, the traction backflow state wide-area monitoring system comprising: a first backflow signal acquisition unit, a second backflow signal acquisition unit, a third backflow signal acquisition unit, a first backflow signal sending unit, a second backflow signal sending unit, a third backflow signal sending unit and a processing unit;

[0006] The first return signal acquisition unit is used to collect the return electrical signal of the traction station and transmit it to the first return signal sending unit in real time; the second return signal acquisition unit is used to collect the return electrical signal of the AT station and transmit it to the second return signal sending unit in real time; the third return signal acquisition unit is used to collect the return electrical signal of the sub-station and transmit it to the third return signal sending unit in real time;

[0007] The first return signal sending unit, the second return signal sending unit and the third return signal sending unit send the return electrical signals collected by each of them to the processing unit in a timely and synchronous manner;

[0008] The processing unit is used to determine the traction return flow state according to the return flow electrical signal and issue a prompt when the return flow is abnormal.

[0009] Optionally, the first return signal acquisition unit includes a return branch current transformer of a traction station, the second return signal acquisition unit includes a return branch current transformer of an AT station, and the third return signal acquisition unit includes a return branch current transformer of a partition station.

[0010] Optionally, the first return signal sending unit, the second return signal sending unit and the third return signal sending unit all include a timing and positioning circuit, a timing trigger circuit and a signal collection circuit;

[0011] The input end of each of the signal collection circuits is respectively connected to the output end of the return branch current transformer of the traction station, the return branch current transformer of the AT station, and the output end of the return branch current transformer of the sub-station; the output end of each of the signal collection circuits is connected to the input end of the processing unit;

[0012] The output end of the timing and positioning circuit is electrically connected to the input end of the timing trigger circuit, and the output end of the timing trigger circuit is electrically connected to the trigger end of the signal collection circuit; each signal collection circuit is used to synchronously collect and send the return electrical signal to the processing unit under the triggering of the timing and positioning circuit and the timing trigger circuit electrically connected thereto.

[0013] Optionally, the timing and positioning circuit includes a GPS timing and positioning circuit.

[0014] Optionally, the processing unit includes a monitoring host and an action module;

[0015] The monitoring host is used to calculate the fuzzy patch progress based on the return electrical signal and the current distribution ratio of each return path, and transmit it to the action module;

[0016] The action module is used to determine the traction reflux state based on the fuzzy paste progress and issue a prompt when the reflux is abnormal.

[0017] Optionally, the action module is used to compare the fuzzy paste progress with different set thresholds, and issue a prompt when determining that the backflow is abnormal.

[0018] Optionally, the traction reflux status wide-area monitoring system further includes a data transfer unit;

[0019] The input end of the data transfer unit is electrically connected to each of the signal collection circuits, and the output end of the data transfer unit is connected to the monitoring host;

[0020] The data transfer unit is used to receive and store the return electrical signals sent by each of the signal collection circuits in real time, and transmit the return electrical signals to the monitoring host.

[0021] Optionally, the traction reflux status wide-area monitoring system further includes an auxiliary monitoring unit;

[0022] The auxiliary monitoring unit is connected to the action module and is used to receive and store the fuzzy paste progress and reflow status.

[0023] Compared with the prior art, the technical solution provided by the embodiment of the present disclosure has the following advantages: the traction return current monitoring system includes a first return current signal acquisition unit, a second return current signal acquisition unit, a third return current signal acquisition unit, a first return current signal sending unit, a second return current signal sending unit, a third return current signal sending unit and a processing unit; the first return current signal acquisition unit is used to collect the return current electrical signal of the traction station and transmit it to the first return current signal sending unit in real time; the second return current signal acquisition unit is used to collect the return current electrical signal of the AT station and transmit it to the second return current signal sending unit in real time; the third return current signal acquisition unit is used to collect the return current electrical signal of the sub-station and transmit it to the second return current signal sending unit in real time. The electric signals are transmitted to the third return signal sending unit in real time; the first return signal sending unit, the second return signal sending unit and the third return signal sending unit synchronize and send the collected return electrical signals to the processing unit; the processing unit is used to determine the traction return state according to the return electrical signal, and issue a prompt when the return is abnormal, so as to realize the synchronous collection of return electrical signals in a wide area including traction stations, AT stations and sub-stations, and realize the real-time monitoring of the traction return state of the electrified railway; further, a prompt is issued when the traction return is abnormal, so as to facilitate timely stopping of losses and avoid people from accidentally entering dangerous areas, thereby helping to reduce equipment losses and ensure personal safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0026] Figure 1 A schematic diagram of the structure of a wide-area monitoring system for traction reflux status provided by an embodiment of the present disclosure;

[0027] Figure 2 A schematic diagram of the structure of another wide-area monitoring system for traction reflux status provided by an embodiment of the present disclosure;

[0028] Figure 3 for Figure 2 The schematic diagram of the traction reflux test principle of the traction reflux status wide-area monitoring system is shown;

[0029] Figure 4 A schematic diagram of the structure of another wide-area monitoring system for traction reflux status provided in an embodiment of the present disclosure.

[0030] Among them: 01, traction station, 02, AT station, 03, sub-station, 111, first return signal acquisition unit, 112, second return signal acquisition unit, 113, third return signal acquisition unit, 121, first return signal sending unit, 122, second return signal sending unit, 123, third return signal sending unit, 13, processing unit, 131, monitoring main board, 132, action module, 14, data transfer unit, 15, auxiliary monitoring unit, 210, timing and positioning circuit, 220, timing trigger circuit, 230, signal collection circuit. DETAILED DESCRIPTION

[0031] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only part of the embodiments of the present disclosure, not all of the embodiments. Generally, the various embodiments of the present disclosure described and shown in the drawings herein can be combined with each other without conflict, and the structural components or functional modules therein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present disclosure provided in the drawings is not intended to limit the scope of the present disclosure claimed for protection, but merely represents selected embodiments of the present disclosure. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present disclosure.

[0033] In the description of the present disclosure, it should be noted that the relational terms such as the term "first", "second", "third", etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the term "include", "comprise" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements that are not clearly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of more restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or equipment including the elements. In addition, the terms such as "horizontal", "vertical", "overhanging" do not mean that the parts are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0034] In the description of the present disclosure, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0035] Figure 1 A schematic diagram of the structure of a wide-area monitoring system for traction reflux status provided by an embodiment of the present disclosure. Figure 1The traction return flow state wide area monitoring system (also referred to as "wide area monitoring system") includes a first return flow signal acquisition unit 111, a second return flow signal acquisition unit 112, a third return flow signal acquisition unit 113, a first return flow signal sending unit 121, a second return flow signal sending unit 122, a third return flow signal sending unit 123 and a processing unit 13; the first return flow signal acquisition unit 111 is used to collect the return flow electrical signal of the traction station 01 and transmit it to the first return flow signal sending unit 121 in real time; the second return flow signal acquisition unit 112 is used to collect the return flow electrical signal of the traction station 01 and transmit it to the first return flow signal sending unit 121 in real time; The return electrical signal of AT station 02 is collected and transmitted to the second return signal sending unit 122 in real time; the third return signal collecting unit 113 is used to collect the return electrical signal of partition station 03, and transmit it to the third return signal sending unit 123 in real time; the first return signal sending unit 121, the second return signal sending unit 122 and the third return signal sending unit 123 synchronize and send the collected return electrical signals to the processing unit 13; the processing unit 13 is used to determine the traction return state according to the return electrical signal, and issue a prompt when the return is abnormal.

[0036] The reflux electrical signal may be a signal that directly represents the reflux state, or may be a signal that indirectly represents the reflux state; illustratively, it may be a current signal or a voltage signal, which is not limited in the embodiments of the present disclosure.

[0037] In the wide-area monitoring system for the traction return flow status provided by the embodiment of the present disclosure, three return flow signal acquisition units respectively collect the return flow electrical signals of the traction station 01, the AT station 02 and the substation 03, and transmit them to the corresponding return flow signal sending units; each return flow signal sending unit can synchronously send the return flow electrical signals collected by each to the processing unit 13 after being synchronized, thereby ensuring the time synchronization of the signals processed by the processing unit 13, so that the traction return flow status can be determined more accurately; further, the processing unit 13 can issue a prompt when the return flow is abnormal, thereby preventing relevant personnel from mistakenly entering the dangerous area and ensuring personal safety; at the same time, relevant personnel can be prompted to inspect and maintain the section with return flow abnormality, which is conducive to avoiding the occurrence of safety accidents and reducing equipment losses.

[0038] In one embodiment, Figure 2 This is a schematic diagram of the structure of another wide-area monitoring system for traction reflux status provided by an embodiment of the present disclosure. Figure 2 The first return signal sending unit 111 includes a return branch current transformer of a traction station, the second return signal sending unit 112 includes a return branch current transformer of an AT station, and the third return signal sending unit 113 includes a return branch current transformer of a partition station.

[0039] In this way, the current transformer can be used to monitor the traction return current of each substation.

[0040] For example, the test principle of traction backflow is as follows Figure 3 As shown, there is a lead wire leading to the choke transformer 210 at the insulating joint 220 of the rail. By inserting the traction substation return branch current transformer, the AT station return branch current transformer and the substation return branch current transformer (shown as 200) into the lead wire, the traction return current of each substation can be measured.

[0041] Exemplarily, the choke neutral point N is electrically connected to the integrated ground line.

[0042] In one embodiment, continue to refer to Figure 2 The first return signal sending unit 121, the second return signal sending unit 122 and the third return signal sending unit 123 all include a timing and positioning circuit 210, a timing trigger circuit 220 and a signal collection circuit 230; the input end of each signal collection circuit 230 is respectively connected to the output end of the return branch current transformer of the traction station, the return branch current transformer of the AT station and the output end of the return branch current transformer of the sub-station; the output end of each signal collection circuit 230 is connected to the input end of the processing unit 13; the output end of the timing and positioning circuit 210 is electrically connected to the input end of the timing trigger circuit 220, and the output end of the timing trigger circuit 220 is electrically connected to the trigger end of the signal collection circuit 230; each signal collection circuit 230 is used to synchronously collect and send the return electrical signal to the processing unit 13 under the triggering of the timing and positioning circuit 210 and the timing trigger circuit 220 electrically connected thereto.

[0043] Among them, the timing and positioning circuit 210 can send location information and time information to the timing trigger circuit 220. The timing trigger circuit 220 timing triggers the signal collection circuit 230 according to the time information, so that the return electrical signals of the traction station, AT station and sub-station at the same time are synchronously sent to the processing unit 13, which is conducive to the real-time and accurate monitoring of the traction return status in a wide area including the traction station, AT station and sub-station.

[0044] In one embodiment, the timing and positioning circuit 210 includes a GPS timing and positioning circuit.

[0045] With this configuration, the wide-area monitoring system for the traction return status of electrified railways adopts GPS timing and triggering functions, which can achieve the synchronization of return electrical signal monitoring in traction substations, substations and AT stations. The monitoring results have a strict time correspondence, and the judgment accuracy of the traction return status is relatively high.

[0046] In other implementations, the timing and positioning circuit 210 may also include other types of circuits known to those skilled in the art that can implement timing and positioning functions, which is not limited in the embodiments of the present disclosure.

[0047] In one embodiment, the processing unit 13 includes a monitoring host 131 and an action module 132; the monitoring host 131 is used to calculate the fuzzy paste progress based on the fuzzy paste progress and the current distribution ratio of each fuzzy paste path, and transmit it to the action module 132; the action module 132 is used to determine the traction reflux state based on the fuzzy paste progress, and issue a prompt when the reflux is abnormal.

[0048] Among them, the monitoring host 131 calculates in real time the fuzzy pasting progress between the monitored current distribution ratio of each return path and the preset current distribution ratio of each return path, and uploads the data to the action module 132. The action module 132 can determine the traction return state according to the size relationship between the fuzzy pasting progress and the set threshold.

[0049] Exemplarily, when the progress of the fuzzy sticker is less than the set threshold, the traction reflux state is determined to be normal, and when the progress of the fuzzy sticker is equal to or greater than the set threshold, the traction reflux state is determined to be abnormal; a prompt is issued when the reflux is abnormal to reduce equipment losses and improve personal safety.

[0050] It is understandable that the specific value of the threshold value can be set according to the requirements of the traction reflux system, and the embodiments of the present disclosure are not limited to this.

[0051] In one embodiment, the action module 132 is used to compare the progress of the fuzzy paste with different set thresholds, and issue a prompt when determining that the backflow is abnormal.

[0052] In this way, by setting different thresholds, corresponding processing measures can be taken according to different safety levels, so as to accurately identify the integrity of the traction return system and automatically alarm for any return anomalies found.

[0053] The difference between different preset thresholds may be set according to the requirements of the traction reflux system, which is not limited in the embodiments of the present disclosure.

[0054] In one embodiment, Figure 4 A schematic diagram of the structure of another wide-area monitoring system for traction reflux status provided by an embodiment of the present disclosure. Figure 4 The traction reflux status wide-area monitoring system also includes a data transfer unit 14; the input end of the data transfer unit 14 is electrically connected to each signal collection circuit 230, and the output end of the data transfer unit 14 is connected to the monitoring host 131; the data transfer unit 14 is used to receive and store the reflux electrical signal sent by each signal collection circuit 230 in real time, and transmit the reflux electrical signal to the monitoring host 131.

[0055] With this configuration, the traction reflux status wide-area detection system adopts a real-time data upload method, which reduces the local data storage capacity and effectively avoids the problem of local data loss. At the same time, it is convenient for the background to conduct comprehensive analysis of traction reflux, thereby improving the system operation efficiency.

[0056] Exemplarily, the data transfer unit 141 may include a communication network, and other data transmission processes in the embodiments of the present disclosure may also be implemented using the communication network.

[0057] In one embodiment, the traction reflux status wide-area monitoring system further includes an auxiliary monitoring unit 15 ; the auxiliary monitoring unit 15 is connected to the action module 132 and is used to receive and store the fuzzy pasting progress and the reflux status.

[0058] In this way, the auxiliary monitoring unit can be used to store the time-related traction return status and its related data, forming a status-related database of the traction return system in a wide area including traction stations, AT stations and sub-stations, so as to record and track the status of the traction return system.

[0059] It is understandable that the above-mentioned functional units or functional modules may also be implemented in other structural forms known to those skilled in the art, and the embodiments of the present disclosure are not limited to this.

[0060] The wide-area monitoring system for the traction return status provided by the embodiment of the present disclosure, by setting GPS timing and triggering functions, synchronously collects the current of each return branch in a wide area including traction substations, AT stations and substations, uses the communication network to upload data, dynamically monitors the traction return status, and issues fault or abnormal alarms, thereby realizing real-time and dynamic comprehensive detection of the traction return status of electrified railways, which is beneficial to reducing equipment losses and improving personal safety.

[0061] The above description is only a specific embodiment of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A wide-area monitoring system for traction reflux status, It is characterized in that include: A first return signal acquisition unit, a second return signal acquisition unit, a third return signal acquisition unit, a first return signal sending unit, a second return signal sending unit, a third return signal sending unit and a processing unit; The first return signal acquisition unit is used to collect the return electrical signal of the traction station and transmit it to the first return signal sending unit in real time; the second return signal acquisition unit is used to collect the return electrical signal of the AT station and transmit it to the second return signal sending unit in real time; The third return signal collection unit is used to collect the return electrical signal of the sub-area and transmit it to the third return signal sending unit in real time; The first return signal sending unit, the second return signal sending unit and the third return signal sending unit send the return electrical signals collected by each of them to the processing unit in a timely and synchronous manner; The processing unit is used to determine the traction reflux state according to the reflux electrical signal and issue a prompt when the reflux is abnormal; The processing unit includes a monitoring host and an action module; The monitoring host is used to calculate the fuzzy patch progress based on the return electrical signal and the current distribution ratio of each return path, and transmit it to the action module; The action module is used to determine the traction reflux state based on the fuzzy paste progress and issue a prompt when the reflux is abnormal; The action module is used to compare the progress of the fuzzy paste with different set thresholds, and issue a prompt when a reflux anomaly is determined; different set thresholds correspond to different security levels and different processing measures.

2. The traction reflux status wide-area monitoring system according to claim 1, It is characterized in that The first return signal acquisition unit includes a return branch current transformer of a traction station, the second return signal acquisition unit includes a return branch current transformer of an AT station, and the third return signal acquisition unit includes a return branch current transformer of a partition station.

3. The traction reflux status wide-area monitoring system according to claim 2, It is characterized in that The first return signal sending unit, the second return signal sending unit and the third return signal sending unit each include a timing and positioning circuit, a timing trigger circuit and a signal collection circuit; The input end of each of the signal collection circuits is respectively connected to the output end of the return branch current transformer of the traction station, the return branch current transformer of the AT station, and the output end of the return branch current transformer of the sub-station; the output end of each of the signal collection circuits is connected to the input end of the processing unit; The output end of the timing and positioning circuit is electrically connected to the input end of the timing trigger circuit, and the output end of the timing trigger circuit is electrically connected to the trigger end of the signal collection circuit; each signal collection circuit is used to synchronously collect and send the return electrical signal to the processing unit under the triggering of the timing and positioning circuit and the timing trigger circuit electrically connected thereto.

4. The traction reflux status wide-area monitoring system according to claim 3, It is characterized in that The timing and positioning circuit includes a GPS timing and positioning circuit.

5. The traction reflux status wide-area monitoring system according to claim 3, It is characterized in that Also includes a data transfer unit; The input end of the data transfer unit is electrically connected to each of the signal collection circuits, and the output end of the data transfer unit is connected to the monitoring host; The data transfer unit is used to receive and store the return electrical signals sent by each of the signal collection circuits in real time, and transmit the return electrical signals to the monitoring host.

6. The traction reflux status wide-area monitoring system according to claim 1, It is characterized in that Also included is an auxiliary monitoring unit; The auxiliary monitoring unit is connected to the action module and is used to receive and store the fuzzy paste progress and reflow status.

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