Large iron main line electricity testing method, system and device and storage medium

Abstract

The invention relates to the field of power system safety monitoring, and discloses a large iron main line electricity testing method, system and device and a storage medium, which are used for improving the accuracy and efficiency of electricity testing. The method comprises the steps: obtaining a first voltage value and a second voltage value at the two ends of a contact network section, and the contact state of a network isolation disconnecting link at the two ends of the contact network section; on the basis of the first voltage value, the second voltage value and the contact state of the Internet-surfing isolation disconnecting link, determining that the Internet-surfing isolation disconnecting link is in an opening / closing state, and determining comparison results of the voltage values at the two ends of the contact network section with a preset non-electricity threshold value, a virtual electricity threshold value and a real electricity threshold value, so as to judge the electrification condition of the contact network section; detecting the voltage of the overhead line system through an electroscope to obtain an electroscope result of an overhead line system maintenance operation point; according to the electrification condition and the electricity verification result, obtaining indication information of whether grounding is allowed or not; and indicating a worker to perform corresponding operation based on the indication information.

Description

Technical Field

[0001] The present invention relates to the field of power system safety monitoring, and in particular to a large railway mainline electricity testing method, system, equipment and storage medium. Background Art

[0002] At present, the electrical testing work before the maintenance of the contact network of the main railway line mainly relies on capacitive manual testers to detect the live status of the contact network maintenance operation point. However, it can only roughly detect "power / no power" and cannot distinguish whether the voltage at the contact network maintenance operation point is normal power supply (real electricity) or virtual electricity caused by induction or leakage, nor can it accurately measure the strength level of virtual electricity. Due to technical limitations, the traditional electrical testing system cannot combine multi-dimensional data related to electrical testing for comprehensive data judgment. It is difficult for operators to accurately assess the grounding risk, resulting in low reliability and efficiency of electrical testing. Summary of the Invention

[0003] The present invention provides a method, system, device and storage medium for testing electricity of a large railway main line, so as to solve the problem of low accuracy and efficiency of electricity testing in the prior art.

[0004] The first aspect of the present invention provides a method for testing electricity on a large railway main line, comprising: obtaining a first voltage value and a second voltage value at both ends of a contact network section, and the contact status of an online isolating knife switch at both ends of the contact network section; determining whether the online isolating knife switch is in an open / closed state based on the first voltage value, the second voltage value and the contact status of the online isolating knife switch, and comparing the voltage values ​​at both ends of the contact network section with a preset no-power threshold, a virtual power threshold and a real power threshold, thereby determining the energized condition of the contact network section, the energized condition being no-power, real power, strong virtual power or weak virtual power; detecting the voltage of the contact network by an electrical tester to obtain an electrical test result of a contact network maintenance operation point; obtaining indication information on whether grounding is allowed based on the energized condition and the electrical test result; and instructing staff to perform corresponding operations based on the indication information.

[0005] In a feasible embodiment, the determination of the energized condition of the contact network section includes: when the online isolation switches at both ends of the section are in the open state and the first voltage value and the second voltage value are not greater than the no-power threshold, it is determined that there is no power; when at least one of the online isolation switches at both ends of the section is in the closed state, or any voltage value of the first voltage value and the second voltage value is not less than the real power threshold, it is determined that there is real power; when the online isolation switches at both ends of the section are in the open state, and any voltage value of the first voltage value and the second voltage value is not less than the virtual power threshold, and is less than the real power threshold, it is determined that there is strong virtual power; when the online isolation switches at both ends of the section are in the open state, and the first voltage value and the second voltage value are less than the virtual power threshold and greater than the no-power threshold, it is determined that there is weak virtual power.

[0006] In a feasible embodiment, the indication information of whether grounding is allowed is obtained based on the charged condition and the test result of the electric tester, including: if the test result of the electric tester is that there is power and the charged condition is that there is no power, it indicates that the electric tester is abnormal; if the test result of the electric tester is that there is power and the charged condition is real power, it indicates that grounding is not allowed; if the test result of the electric tester is that there is power and the charged condition is strong virtual power, it indicates that grounding is not allowed; if the test result of the electric tester is that there is power and the charged condition is weak virtual power, it indicates that grounding is allowed.

[0007] In a feasible embodiment, the indication information of whether grounding is allowed is obtained based on the charged condition and the test result of the electric tester, and also includes: if the test result of the electric tester is no electricity and the charged condition is no electricity, then it is indicated that grounding is allowed; if the test result of the electric tester is no electricity and the charged condition is strong virtual electricity, then it is indicated that further judgment is needed on whether grounding is allowed; if the test result of the electric tester is no electricity and the charged condition is weak virtual electricity, then it is indicated that grounding is allowed; if the test result of the electric tester is no electricity and the charged condition is weak virtual electricity, then it is indicated that grounding is allowed; if the test result of the electric tester is no electricity and the charged condition is real electricity, then it is indicated that the electric tester is abnormal.

[0008] In a feasible embodiment, the instruction for the staff to perform corresponding operations based on the indication information and the energized condition includes: if the indication information indicates that further judgment is required on whether grounding is allowed, the operator is notified to hang the ground wire and start maintenance operations; if the indication information indicates that grounding is not allowed and there is strong virtual electricity, the operator is asked to confirm whether to operate in combination with the on-site environmental conditions; if the indication information indicates that grounding is not allowed and there is real electricity, the operation is prohibited and reported to the system background; if the indication information indicates that the tester is abnormal, an equipment failure alarm is triggered.

[0009] In a feasible embodiment, the operator confirms whether to perform the operation based on the on-site environmental conditions, including: obtaining environmental data, the environmental data including on-site temperature, humidity and weather conditions; evaluating the operation risk based on the voltage value of the strong virtual electricity and the environmental data; and the operator confirms whether to continue the grounding operation based on the operation risk.

[0010] In a feasible implementation manner, the voltage of the contact network is detected by a tester to obtain the test result of the contact network maintenance operation point, including: using a capacitive tester with a GPS positioning function to test the contact network maintenance operation point, the capacitive tester is provided with a display; the test result is transmitted to the display via Bluetooth, and the display distinguishes the test location as uplink or downlink according to the GPS positioning.

[0011] The second aspect of the present invention provides a large railway main line electrical testing system, comprising: a first voltage transformer for collecting a first voltage value at one end of a contact network section; a second voltage transformer for collecting a second voltage value at the other end of the contact network section; a collection device for receiving the first voltage value transmitted by the first voltage transformer and the second voltage value transmitted by the second voltage transformer, and collecting the contact status of the online isolation knife switches at both ends of the contact network section; a tester for detecting the voltage of the contact network to obtain the electrical testing results of the contact network maintenance operation point; a system background for receiving the data of the collection device through 4G communication. The first voltage value, the second voltage value, and the contact status of the online isolation switch are transmitted, and based on the acquired data, the online isolation switch is determined to be in the open / closed state, as well as the comparison results of the voltage values ​​at both ends of the contact network section with the preset no-power threshold, virtual power threshold and real power threshold, so as to determine the energized condition of the contact network section, and the energized condition is no-power, real power, strong virtual power or weak virtual power; the display is used to comprehensively judge whether grounding is allowed based on the received test results transmitted by the tester and the energized condition transmitted by the system background, and obtain instruction information to instruct the staff to perform grounding operations.

[0012] A third aspect of the present invention provides an electronic device, comprising: a memory and at least one processor, wherein the memory stores instructions; the at least one processor calls the instructions in the memory to enable the electronic device to execute the above-mentioned large railway main line electrical testing method.

[0013] A fourth aspect of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores instructions, which, when executed on a computer, enable the computer to execute the above-mentioned large railway main line electrical testing method.

[0014] In the technical solution provided by the present invention, the first voltage value and the second voltage value at both ends of the contact network section, as well as the contact status of the online isolation switch at both ends of the contact network section are obtained; logical judgment processing is performed based on the first voltage value, the second voltage value and the contact status of the online isolation switch to obtain the electrification condition of the contact network section, and the electrification condition is no electricity, real electricity, strong virtual electricity or weak virtual electricity; the voltage of the contact network maintenance operation point is detected by a tester to obtain the test result; according to the electrification condition and the test result, indication information on whether grounding is allowed is obtained; based on the indication information and the electrification condition, the staff is instructed to perform corresponding operations. In the embodiment of the present invention, by collecting the voltage values ​​at both ends of the contact network section and the status of the online isolation switch and performing logical analysis, the energized condition of the contact network, i.e., no power, real power, strong virtual power or weak virtual power, can be accurately distinguished; at the same time, through the dual power testing mechanism of the tester and the system background, a comprehensive judgment is made on whether grounding is allowed, which significantly improves the reliability and safety of the power testing; in addition, based on the instruction information, the operating personnel can perform grounding operations according to clear instructions, thereby reducing the risk of misoperation, improving operating efficiency, and ensuring the safety of personnel and equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of an embodiment of a method for testing electricity on a main railway line according to an embodiment of the present invention;

[0016] Figure 2 A schematic diagram of an embodiment of the electric detection logic judgment of the live condition in an embodiment of the present invention;

[0017] Figure 3 Schematic diagram of another embodiment of the method for testing the electricity of a large railway main line according to an embodiment of the present invention;

[0018] Figure 4 A schematic diagram of an embodiment of a large railway mainline electrical testing system according to an embodiment of the present invention;

[0019] Figure 5 FIG. 1 is a schematic diagram of an electronic device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0020] The embodiments of the present invention provide a method, system, device and storage medium for testing electricity on a large railway main line. By analyzing the contact network voltage and the status of the knife switch, real electricity and virtual electricity are identified, thereby significantly improving the accuracy and efficiency of electricity testing.

[0021] The terms "first," "second," "third," "fourth," and the like (if any) in the description and claims of the present invention and in the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" or "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to these processes, methods, products, or apparatus.

[0022] It is understandable that the execution subject of the present invention is a large railway mainline electrical testing system. The embodiment of the present invention is described by taking a server as the execution subject as an example.

[0023] For ease of understanding, the specific process of the embodiment of the present invention is described below. Figure 1 An embodiment of a method for testing electricity on a main railway line according to an embodiment of the present invention includes:

[0024] 101. Obtain a first voltage value and a second voltage value at both ends of the overhead contact network section, as well as contact states of online isolation switches at both ends of the overhead contact network section;

[0025] The collection device includes a collection device 1 and a second collection device 2. The collection device 1 is used to collect the contact status of the online isolation knife switch at one end of the contact network section and receive the first voltage value of one end of the contact network section measured by a first voltage transformer (VT1). The collection device 2 is used to collect the contact status of the online isolation knife switch at the other end of the contact network section and receive the second voltage value of the other end of the contact network section measured by a second voltage transformer (VT2). The voltage transformer adopts non-contact induction measurement technology to avoid direct access to the high-voltage line, thereby improving safety. The system background receives the first voltage value, the second voltage value and the contact status of the online isolation knife switches at both ends of the contact network section uploaded by the collection device.

[0026] 102. Based on the first voltage value, the second voltage value, and the contact state of the online isolating switch, determine whether the online isolating switch is in the open / closed state, and compare the voltage values ​​at both ends of the catenary section with the preset no-power threshold, virtual power threshold, and real power threshold, thereby determining the live state of the catenary section, which is no-power, real power, strong virtual power, or weak virtual power;

[0027] The system backend can pre-process the received data, such as filtering and denoising the voltage data, and verifying the contact status, to ensure the data is accurate and reliable. The contact status signal of each online isolation switch contains the hard contact opening and closing information of the open / closed switch. Based on this information, the open / closed status of the online isolation switch is determined. For example, a closed normally open contact indicates a closed switch, and a disconnected normally closed contact indicates a closed switch. Please refer to Figure 2 , Figure 2 The electrical testing logic for the energized situation checks the contact status of the online isolating switches at both ends of the contact network section; if the online isolating switches at both ends of the contact network section are in the open state, the voltage data is further analyzed. If the first voltage value and the second voltage value are both not greater than the no-power threshold, the energized situation of the contact network section is determined to be no-power, that is, the contact network is completely no-power at this time. If any one of the first voltage value and the second voltage value is not less than the virtual power threshold and is less than the real power threshold, the energized situation of the contact network section is determined to be strong virtual power. If the first voltage value and the second voltage value are both less than the virtual power threshold and greater than the no-power threshold, the energized situation of the contact network section is determined to be weak virtual power. If at least one of the online isolating switches at both ends of the contact network section is in the closed state, or any one of the first voltage value and the second voltage value is not less than the real power threshold, the energized situation of the contact network section is determined to be real power; and the energized situation is transmitted to the operator in real time via the 4G network. The system background can adopt multiple verification mechanisms to ensure the accuracy of the judgment results, such as data timestamp comparison, historical data reference, etc. In addition, dynamic adjustment can be supported for each threshold, such as automatically lowering the virtual power threshold in thunderstorm weather.

[0028] 103. Detect the voltage of the contact network through the electrometer and obtain the test results of the contact network maintenance operation point;

[0029] The operator sends a system electrical test request to the system background and receives the electrical test result sent by the electrical tester. The electrical test result includes at least information on whether there is electricity in the contact network, and may also include GPS positioning information. The system background receives the system electrical test request and the GPS positioning information sent by the electrical tester. The electrical tester is a capacitive electrical tester with GPS positioning function. Based on the GPS positioning information, it can be determined whether the electrical test location is uplink or downlink.

[0030] 104. According to the charged state and the test result of the electrometer, an indication information of whether grounding is allowed is obtained;

[0031] The operator receives the live status information sent by the system background and compares it with the test results uploaded by the tester, forming a double verification mechanism. When the test result shows that there is power and the live status is no power, an indication message of the tester abnormality is generated; when the test result shows that there is power and the live status is real power, an indication message of not allowing grounding is generated; when the test result shows that there is power and the live status is weak power, an indication message of allowing grounding is generated; when the test result shows that there is power and the live status is strong power, an indication message of not allowing grounding is generated; when the test result shows that there is no power and the live status is no power, an indication message of allowing grounding is generated; when the test result shows that there is no power and the live status is no power, an indication message of allowing grounding is generated; when the test result shows that there is no power and the live status is weak power, an indication message of allowing grounding is generated; when the test result shows that there is no power and the live status is strong power, an indication message of needing further judgment on whether grounding is allowed is generated; when the test result shows that there is no power and the live status is real power, an indication message of the tester abnormality is generated.

[0032] 105. Instruct the staff to perform corresponding operations based on the instruction information.

[0033] Based on the instruction information, the operator display can provide operational guidance to staff in a variety of ways: for example, a high-brightness three-color LED indicator light can be used in conjunction with a large-font Chinese display screen to ensure clear visibility under various lighting conditions. For example, the red LED indicator light indicates prohibition, yellow indicates warning, and green indicates permission. The operating instructions can be played in a loop through a high-decibel voice broadcast system, which can still effectively convey information in noisy environments. Vibration reminders can also be used to ensure that important warnings are not ignored.

[0034] In addition, for operations that allow grounding, an electronic operation ticket can be generated to record information such as the grounding location, time, and operator, and automatically synchronized to the cloud. For situations where grounding is prohibited, in addition to the sound and light alarm, the mechanical operating mechanism of the grounding switch can also be forcibly locked, and double verification is required to unlock it, such as a password plus a fingerprint. For situations where further judgment is required on whether grounding is allowed, it is necessary to confirm based on actual on-site conditions. In special cases, such as forced virtual power but necessary operations, an upgraded approval process can be supported, and remote authorization by the on-duty engineer is required to continue the operation. All operation processes will be uploaded to the safety supervision platform in real time, and managers can monitor the operation status in real time through PC or mobile terminals. After the operation is completed, the system background will automatically generate an electronic report containing all key data for archiving as a maintenance record, which can be quickly retrieved through a QR code.

[0035] In the embodiment of the present invention, by collecting the voltage values ​​at both ends of the contact network section and the status of the online isolation switch and performing logical analysis, it is possible to accurately distinguish the energized condition of the contact network, that is, no electricity, real electricity, strong virtual electricity or weak virtual electricity. At the same time, double electricity testing is performed through the data corresponding to the tester and the system background, and a comprehensive judgment is made on whether grounding is allowed, which significantly improves the reliability and safety of the electricity testing. In addition, based on the instruction information, the operating personnel can perform grounding operations according to clear instructions, thereby reducing the risk of misoperation, improving the efficiency of the electricity testing operation, and ensuring the safety of personnel and equipment.

[0036] See also Figure 3 Another embodiment of the method for testing the electricity of a large railway main line in the embodiment of the present invention includes:

[0037] 301. Obtain a first voltage value and a second voltage value at both ends of the overhead contact network section, and a contact state of an online isolation switch at both ends of the overhead contact network section;

[0038] The execution process of step 301 is similar to that of the above step 101 and will not be repeated here.

[0039] 302. Based on the first voltage value, the second voltage value, and the contact state of the online isolating switch, determine whether the online isolating switch is in an open / closed state, and compare the voltage values ​​at both ends of the catenary section with preset no-power thresholds, virtual power thresholds, and real power thresholds, thereby determining the live state of the catenary section, which is no-power, real power, strong virtual power, or weak virtual power;

[0040] When the online isolation switches at both ends of the section are in the open state, and the first voltage value and the second voltage value are not greater than the no-power threshold, it is determined that there is no power; when at least one of the online isolation switches at both ends of the section is in the closed state, or any of the first voltage value and the second voltage value is not less than the real power threshold, it is determined that there is real power; when the online isolation switches at both ends of the section are in the open state, and any of the first voltage value and the second voltage value is not less than the virtual power threshold, and is less than the real power threshold, it is determined to be strong virtual power; when the online isolation switches at both ends of the section are in the open state, and the first voltage value and the second voltage value are less than the virtual power threshold and greater than the no-power threshold, it is determined to be weak virtual power.

[0041] The no-power threshold, the virtual power threshold, and the real power threshold are all determined according to actual conditions. For example, the no-power threshold can be set to 0.5 kV, the virtual power threshold to 1.1 kV, and the real power threshold to 25 kV.

[0042] For example, when the first overhead contact network section of the main line of the railway is tested for electricity, the data uploaded by the system background are as follows: in the first scenario, the online isolation knife switches at both ends of the overhead contact network section are in the open state, and the first voltage value collected is 0.8kV, and the second voltage value is 0.9kV, both of which are greater than the no-power threshold of 0.5kV and less than the virtual power threshold of 1.1kV. According to the logic rules, the overhead contact network section is judged to be in a weak virtual power state; in the second scenario, the online isolation knife switch at one end of the overhead contact network section is in the closed state, even if the other end is closed. If the voltage value is lower than the no-power threshold, the system background will also determine that the section is in a real-power state; in the third scenario, when the online isolation switches at both ends of the contact network section are in the open state, but the voltage value at one end reaches 12kV, which is greater than the virtual power threshold of 1.1kV and less than the real-power threshold of 25kV, the system background will determine that the section is in a strong virtual power state; in the fourth scenario, when the online isolation switches at both ends of the contact network section are in the open state, if the voltage values ​​at both ends are lower than the no-power threshold of 0.5kV, it is determined to be in a no-power state.

[0043] 303. Detect the voltage of the contact network through the electrometer to obtain the voltage test result of the contact network maintenance operation point;

[0044] A capacitive tester with GPS positioning function is used to detect voltage at the contact network maintenance operation point. The capacitive tester is equipped with an operator display. The test results are transmitted to the operator display via Bluetooth. The operator display distinguishes the test location as uplink or downlink according to the GPS positioning.

[0045] 304. Obtaining indication information on whether grounding is permitted based on the charged state and the test result of the electroscope;

[0046] If the test result of the electrician is that there is power and the power is real, then the indication is that grounding is not allowed; if the test result of the electrician is that there is power and the power is strong virtual, then the indication is that grounding is not allowed; if the test result of the electrician is that there is power and the power is weak virtual, then the indication is that grounding is allowed; if the test result of the electrician is that there is no power and the power is no power, then the indication is that grounding is allowed; if the test result of the electrician is that there is no power and the power is strong virtual, then the indication is that grounding is allowed; if the test result of the electrician is that there is no power and the power is weak virtual, then the indication is that grounding is allowed; if the test result of the electrician is that there is no power and the power is weak virtual, then the indication is that grounding is allowed; if the test result of the electrician is that there is power and the power is no power, or the test result is that there is no power and the power is real, then the indication is that the electrician is abnormal.

[0047] 305. If the instruction information indicates that grounding is allowed, the operator is notified to hang the ground wire and start the maintenance work;

[0048] For example, a clear notification message can be displayed on the operator screen, such as "Grounding is allowed, please hang the ground wire and start maintenance work." At the same time, the operator may emit a beep or vibration reminder to ensure that the operator can pay attention to the notification in time. After confirming the content of the notification, the operator can safely hang the ground wire according to the established operating procedures and then start the maintenance work of the contact network.

[0049] 306. If the instruction information indicates that further determination is required as to whether grounding is permitted, the operator shall confirm whether the operation is permitted in combination with the on-site environmental conditions;

[0050] The operating personnel shall confirm whether to proceed with the operation based on the on-site environmental conditions, including: obtaining environmental data, including on-site temperature, humidity and weather conditions; assessing the operating risk based on the voltage value of strong virtual electricity and environmental data; and confirming whether to continue the grounding operation based on the operating risk.

[0051] The temperature and humidity data as well as weather conditions at the site can be collected and uploaded to the system backend in real time through the temperature sensors, humidity sensors and environmental monitoring devices of the micro-meteorological station at the work site. After receiving the environmental data, the system backend combines the strong virtual current voltage values ​​obtained from the voltage transformers at both ends of the contact network section with the preset risk assessment algorithm, comprehensively considering the voltage level, the impact of ambient temperature and humidity on insulation performance and the operation risks under severe weather conditions, thereby quantitatively assessing the risk level in the current working environment.

[0052] 307. If the instruction information indicates that grounding is not allowed and the device is actually powered, the operation is prohibited and reported to the system backend;

[0053] When the instruction information indicates that grounding is not allowed and the power is real, the operator is clearly informed through the operator display that grounding operations are prohibited, and the system background is immediately reported. The system background records the relevant information for subsequent analysis and processing. At the same time, an alarm or notification mechanism can be set to remind relevant personnel to pay attention to the safety status of the contact network section.

[0054] 308. If the indication information indicates that the electroscope is abnormal, a device failure alarm is triggered.

[0055] If the indication information indicates that the electrometer is abnormal, an audible and visual alarm can be triggered through the operator display, such as continuous beeping + red flashing, and the equipment abnormality code can be sent to the system background through the wireless network. The system background automatically generates a fault work order and pushes it to the maintenance terminal. The operator display can also display a warning message "Electrometer fault code XXX, no operation" on the screen, and force the state to remain until the maintenance personnel release it with a special password or the background remote resets it.

[0056] In the embodiment of the present invention, by combining the voltage values ​​at both ends of the contact network section, the isolation status and the multi-channel electrical test logic of the electrical test results, an accurate judgment of the electrical condition of the contact network is achieved, which solves the problem that traditional electrical tests cannot distinguish between virtual electricity and real electricity. GPS positioning and dynamic evaluation of environmental data are introduced to ensure the accuracy of the electrical test position and the controllable operation risks under strong virtual electricity conditions. At the same time, through real-time interaction between the system background and the operator display, a clear grounding indication is provided, which significantly improves the efficiency and reliability of railway contact network maintenance operations.

[0057] The above describes the large-scale railway mainline electricity testing method in the embodiment of the present invention. The following describes the large-scale railway mainline electricity testing system in the embodiment of the present invention. Figure 4 In one embodiment of the present invention, a large railway mainline electrical testing system includes:

[0058] A first voltage transformer (VT1), a second voltage transformer (VT2), a collection device, a tester, a system background and an operator, wherein the collection device includes a collection device 1 and a collection device 2.

[0059] Among them, VT1 is used to collect the first voltage value at one end of the contact network section, and transmit the first voltage value to the collection device 1 through the 4G network, VT2 is used to collect the second voltage value at the other end of the contact network section, and transmit the second voltage value to the collection device 2; the collection device 1 is used to receive the first voltage value transmitted by VT1, and collect the contact status of the online isolation switch at one end of the contact network section, and upload the first voltage value and the collected contact status of the online isolation switch at one end to the system background through 4G communication; the collection device 2 is used to receive the second voltage value transmitted by VT2, and collect the contact status of the online isolation switch at the other end of the contact network section, and upload the first voltage value and the collected contact status of the online isolation switch at the other end to the system background through 4G communication; the electroscope has a GPS positioning function The capacitive tester is used to detect the voltage of the contact network to obtain the test results of the contact network maintenance operation point, and transmit the test results to the operator through wireless communication technologies such as Bluetooth; the system background is used to receive the first voltage value, the second voltage value, and the contact status of the online isolation switch transmitted by the acquisition device through 4G communication, and determine whether the online isolation switch is in the open / closed state based on the acquired data, as well as the comparison results of the voltage values ​​at both ends of the contact network section with the preset no-power threshold, virtual power threshold and real power threshold, so as to determine the energized condition of the contact network section, whether the energized condition is no-power, real power, strong virtual power or weak virtual power, and transmit each data to the operator through 4G communication; the operator is used to comprehensively judge whether grounding is allowed based on the received test results and the energized condition, and obtain instruction information to instruct the staff to perform grounding operations.

[0060] Further, such as Figure 4As shown in the figure, the entire main line contact network is divided into various power supply sections by disconnecting insulators. The distance of each power supply section reaches tens of kilometers. VT1 and VT2 at both ends of the contact network section can accurately collect the voltage values ​​at both ends of the section, and the error can be controlled within ±1%. In order to measure the voltage of the contact network more closely, VT1 and VT2 can be set near the online isolation switch.

[0061] In the embodiment of the present invention, by respectively arranging voltage transformers and collection devices at both ends of the contact network section, real-time and accurate collection and transmission of the voltage values ​​at both ends and the contact status of the on-grid isolation knife switch are achieved. Combined with a capacitive tester with GPS positioning function, a system background and an operator display, the electrical test results can be quickly obtained and the energized condition of the contact network section can be comprehensively analyzed to provide the operating personnel with accurate indication information on whether grounding is allowed, thereby effectively improving the efficiency and safety of the electrical test operation.

[0062] above Figure 4 The large railway mainline electrical testing system in the embodiment of the present invention is described in detail from the perspective of the entity, and the electronic equipment in the embodiment of the present invention is described in detail from the perspective of hardware processing.

[0063] See also Figure 5 As shown, the electronic device includes a processor 500 and a memory 501. The memory 501 stores machine executable instructions that can be executed by the processor 500. The processor 500 executes the machine executable instructions to implement the above-mentioned large railway main line electrical testing method.

[0064] Further, Figure 5 The large railway mainline electrical testing device shown further includes a bus 502 and a communication interface 503 , and the processor 500 , the communication interface 503 and the memory 501 are connected via the bus 502 .

[0065] Among them, the memory 501 may include a high-speed random access memory (RAM), and may also include a non-volatile memory (non-volatile memory), for example, at least one disk storage. The communication connection between the system network element and at least one other network element is realized through at least one communication interface 503 (which can be wired or wireless), and the Internet, wide area network, local area network, metropolitan area network, etc. can be used. The bus 502 can be an ISA bus, a PCI bus, or an EISA bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 5 Only one bidirectional arrow is used in the diagram, but this does not mean that there is only one bus or one type of bus.

[0066] The processor 500 may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method can be completed by hardware integrated logic circuits or software instructions in the processor 500. The processor 500 may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it may also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present disclosure. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the method disclosed in conjunction with the embodiments of the present disclosure may be directly implemented and executed by a hardware decoding processor, or by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium mature in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. The storage medium is located in the memory 501 , and the processor 500 reads the information in the memory 501 and completes the method steps of the aforementioned embodiment in combination with its hardware.

[0067] The present invention also provides an electronic device, which includes a memory and a processor. The memory stores computer-readable instructions. When the computer-readable instructions are executed by the processor, the processor executes the steps of the large railway mainline electrical testing method in the above-mentioned embodiments.

[0068] The present invention also provides a computer-readable storage medium, which may be a non-volatile computer-readable storage medium or a volatile computer-readable storage medium. The computer-readable storage medium stores instructions, which, when executed on a computer, enable the computer to execute the steps of the large railway mainline electrical testing method.

[0069] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0070] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk, etc., various media that can store program code.

[0071] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for testing the electricity of a large railway main line, characterized in that: The main line electricity testing method includes: Acquire a first voltage value and a second voltage value at both ends of the contact network section, and the contact status of the on-line isolation switches at both ends of the contact network section; Based on the first voltage value, the second voltage value, and the contact state of the online isolation switch, determining whether the online isolation switch is in an open / closed state, and a comparison result of the voltage values ​​at both ends of the contact network section with a preset no-power threshold, a virtual power threshold, and a real power threshold, thereby determining the charged state of the contact network section, the charged state being no-power, real power, strong virtual power, or weak virtual power; The voltage of the catenary is detected by an electroscope, and the voltage test result of the catenary maintenance operation point is obtained; Obtaining indication information on whether grounding is permitted based on the charged condition and the electrical test result; Instruct the staff to perform corresponding operations based on the instruction information.

2. The method for testing electricity of a large railway main line according to claim 1, characterized in that: Determining the charged condition of the contact network section includes: When the online isolation switches at both ends of the section are in the open state and both the first voltage value and the second voltage value are not greater than the power-off threshold, it is determined that there is no power; When at least one of the online isolation switches at both ends of the section is in the closed state, or any of the first voltage value and the second voltage value is not less than the actual power threshold, it is determined to be actual power; When the online isolation switches at both ends of the section are in the open state, and any one of the first voltage value and the second voltage value is not less than the virtual power threshold and is less than the real power threshold, it is determined to be a strong virtual power; When the online isolation switches at both ends of the section are in the open state, and the first voltage value and the second voltage value are both less than the virtual power threshold and greater than the no-power threshold, it is determined to be weak virtual power.

3. The method for testing electricity of a large railway main line according to claim 1, characterized in that: The obtaining of indication information on whether grounding is allowed based on the charged condition and the test result of the electroscope includes: If the test result of the electrometer is that there is electricity and the electrified condition is that there is no electricity, it indicates that the electrometer is abnormal; If the test result of the electroscope is that there is electricity and the charged condition is real electricity, then the indication is that grounding is not allowed; If the test result of the electrometer shows that there is electricity and the charged condition is strong virtual electricity, then the indication is that grounding is not allowed; If the test result of the electrician is that there is electricity and the charged condition is weak electricity, it indicates that grounding is allowed.

4. The method for testing electricity of a large railway main line according to claim 3, characterized in that: The step of obtaining indication information on whether grounding is permitted based on the charged state and the test result of the electroscope further includes: If the test result of the electroscope is no electricity and the energized condition is no electricity, then the grounding is allowed; If the test result of the electrician is that there is no electricity and the live condition is strong virtual electricity, it indicates that further judgment is required as to whether grounding is allowed; If the result of the electric tester is that there is no electricity and the charged condition is weak electricity, it indicates that grounding is allowed; If the electrical test result of the electrical tester is that there is no electricity and the charged condition is that there is actual electricity, it indicates that the electrical tester is abnormal.

5. The method for testing electricity of a large railway main line according to claim 1, characterized in that: The instructing a worker to perform corresponding operations based on the instruction information and the live condition includes: If the instruction information indicates that grounding is allowed, the operator is notified to hang the ground wire and start the maintenance work; If the instruction information indicates that further determination is required as to whether grounding is permitted, the operator shall confirm whether the operation is permitted in combination with the on-site environmental conditions; If the instruction information indicates that grounding is not allowed and the power is on, the operation is prohibited and reported to the system backend; If the indication information indicates that the electroscope is abnormal, an equipment failure alarm is triggered.

6. The method for testing electricity of a main railway line according to claim 5, characterized in that: The operator shall confirm whether to operate the operation in combination with the on-site environmental conditions, including: Acquiring environmental data, including on-site temperature, humidity, and weather conditions; Assessing the operation risk based on the voltage value of the strong virtual electricity and the environmental data; Based on the operation risk, the operator determines whether to continue the grounding operation.

7. The method for testing electricity of a large railway main line according to claim 1, characterized in that: The method of detecting the voltage of the contact network by using an electroscope to obtain the voltage detection result of the contact network maintenance operation point includes: A capacitive electroscope with GPS positioning function is used to test the electrical status of the contact network maintenance operation point. The capacitive electroscope is provided with an operating display. The electrical test result is transmitted to the operator via Bluetooth, and the operator distinguishes the electrical test location as uplink or downlink according to the GPS positioning.

8. A large railway mainline electrical testing system, characterized in that: The mainline electrical testing system of the large railway includes: A first voltage transformer, used for collecting a first voltage value at one end of the overhead contact network section; a second voltage transformer, configured to collect a second voltage value at the other end of the overhead contact section; a collecting device for receiving a first voltage value transmitted by the first voltage transformer and a second voltage value transmitted by the second voltage transformer, and collecting contact states of the online isolation switches at both ends of the overhead contact section; The electrometer is used to detect the voltage of the catenary and obtain the test results at the catenary maintenance operation point; The system backend is used to receive the first voltage value, the second voltage value, and the contact state of the online isolation switch transmitted by the acquisition device through 4G communication, and determine whether the online isolation switch is in an open / closed state based on the acquired data, as well as the comparison results of the voltage values ​​at both ends of the contact network section with the preset no-power threshold, virtual power threshold, and real power threshold, thereby determining the charged condition of the contact network section, which is no-power, real power, strong virtual power, or weak virtual power; The operator is used to comprehensively judge whether grounding is allowed based on the received test results transmitted by the electroscope and the charged status transmitted by the system background, and obtain instruction information to instruct the staff to perform grounding operations.

9. An electronic device, characterized in that: The electronic device comprises: a memory and at least one processor, wherein instructions are stored in the memory; The at least one processor calls the instructions in the memory to enable the electronic device to execute the large railway mainline electrical testing method as described in any one of claims 1 to 7.

10. A computer-readable storage medium having instructions stored thereon, characterized in that: When the instructions are executed by the processor, the large railway mainline electrical testing method according to any one of claims 1 to 7 is implemented.

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