Area cathodic protection feeding test system and test method

Abstract

The application provides a regional cathode protection power supply test system and a test method, and relates to the technical field of corrosion control of oil and gas field stations. The regional cathode protection power supply test system is used for performing a power supply test on a test region for regional cathode protection. A temporary ground bed is arranged on the ground of the test region. A power supply equipment is arranged between the temporary ground bed and a metal pipeline of the test region to form a power supply loop. The power supply test system comprises a control host and a test tool for testing an electric potential. The test tool is arranged at a test point in the test region. The control host is in communication with the test tool and the power supply equipment. The control host is used for controlling the on-off of the power supply equipment, one-key control of the test tool for collecting the electric potential (including a natural electric potential, a power-on electric potential and a power-off electric potential) of the corresponding test point, and real-time acquisition of the collected electric potential. The application is used for quickly and accurately determining the power supply test of the cathode protection current.

Description

Technical Field

[0001] This application relates to the field of corrosion control technology for oil and gas field stations, and in particular to a power supply test system and test method for regional cathodic protection. Background Technology

[0002] In recent years, regional cathodic protection technology for oil and gas field stations has gradually gained attention from management units, prompting them to successively carry out regional cathodic protection design and construction work for in-service stations. Among these efforts, determining the regional cathodic protection current through power supply tests is particularly important. Power supply tests involve selecting multiple test points within the area and measuring the protection potential at these points under different temporary ground bed conditions, thereby determining the cathodic protection current for that area.

[0003] In related technologies, power supply tests primarily rely on manual data collection. Specifically, after manually selecting suitable test points, each adjustment of the temporary ground bed conditions requires manual data collection from all test points, which is time-consuming. For example, for typical small to medium-sized oil and gas stations, the power supply test can take 20-40 hours, not only consuming significant manpower but also increasing station management risks due to the need for cross-day operations.

[0004] Therefore, there is an urgent need to develop a power supply test scheme that can quickly and accurately determine the cathodic protection current. Summary of the Invention

[0005] This application provides a power supply test system and method for regional cathodic protection, which can quickly and accurately determine the magnitude of the cathodic protection current.

[0006] In a first aspect, this application provides a power supply test system for regional cathodic protection, wherein a temporary ground bed is laid on the ground of the test area, and the power supply equipment is set between the temporary ground bed and the metal pipes of the test area to form a power supply circuit;

[0007] The power supply test system includes: a control host and test tools for testing the potential, wherein:

[0008] The testing tools are set at the test points in the test area;

[0009] The control host communicates with both the testing tool and the power supply equipment. The control host controls the switching on and off of the power supply equipment, and controls the testing tool to collect the potential of the corresponding test point with one click, as well as to acquire the collected potential in real time.

[0010] In one possible implementation, the testing tool is a portable testing tool.

[0011] In one possible implementation, the test tool includes a small reference electrode and a small voltmeter, wherein the small voltmeter and the small reference electrode are electrically connected.

[0012] In one possible implementation, the testing tool is further provided with a transmission communication module connected to a small voltmeter. The transmission communication module is used to interact with the control host. The information interaction includes receiving control commands from the control host and sending the collected on-state or off-state potentials to the control host.

[0013] In one possible implementation, the testing tool also includes a display screen connected to a small voltmeter for displaying the acquired potential.

[0014] In one possible implementation, the testing tool further includes a magnetic block for attaching to the pipe in the testing area, the magnetic block being electrically connected to a small voltmeter.

[0015] In one possible implementation, the control host is also used to control the magnitude of the current output by the power supply device.

[0016] In one possible implementation, the control host has a built-in polarization potential data screening model, which is used to determine the power-off polarization potential based on the real-time acquired power-off potential.

[0017] Secondly, this application provides a power supply test method for regional cathodic protection, comprising: a control host applied to a power supply test system for regional cathodic protection as described in the first aspect and / or various possible embodiments of the first aspect, wherein the power supply test method for regional cathodic protection includes:

[0018] Step a: Control the test tools in the power supply test system to collect the natural potential of the corresponding test points;

[0019] Step b: Control the power supply equipment in the power supply test system to turn on;

[0020] Step c: After the power supply equipment has been running for a set period of time, control the power supply equipment to be turned off, and control the test tool in the power supply test system to collect the power failure potential of the corresponding test point.

[0021] Step d: Determine the polarization potential of the power failure based on the real-time acquired power failure potential;

[0022] Step e: Under the condition that the de-polarization potential meets the requirements of the power supply test, record the natural potential, the de-polarization potential, and the output voltage and output current of the power supply equipment corresponding to the de-polarization potential.

[0023] In one possible implementation, if the polarization potential of the de-polarization electrode does not meet the requirements of the power supply test, the magnitude of the current output by the power supply equipment is adjusted, and steps b to d are executed until the polarization potential of the de-polarization electrode meets the requirements of the power supply test.

[0024] And / or, if the polarization potential of the de-polarization does not meet the requirements of the power supply test, a temporary ground bed is redeployed, a power supply circuit is built, and steps b to d are executed until the polarization potential of the de-polarization does meet the requirements of the power supply test.

[0025] In one possible implementation, the control host has a built-in polarization potential data screening model to determine the power-off polarization potential based on the real-time acquired power-off potential, including:

[0026] The real-time acquired power-off potential is input into the polarization potential data screening model for polarization potential data screening processing, and the output of the polarization potential data screening model is obtained. The polarization potential data screening model is used to generate a power-off potential decay curve based on the real-time acquired power-off potential, and the power-off polarization potential is read from the power-off potential decay curve.

[0027] Thirdly, this application provides a control host, including: a memory and a processor;

[0028] Memory; memory used to store processor-executable instructions;

[0029] A processor for implementing the test method as described in any of the second aspects, based on executable instructions stored in memory.

[0030] The feeder test system and method for regional cathodic protection provided in this application enable one-button control of the test tool to acquire the feeder test potential, which includes both on-state and off-state potentials. This simplifies the operation process, improves the efficiency of feeder test, and saves time and costs. Simultaneously, one-button control reduces manual intervention, minimizing acquisition errors caused by human error and skill differences, improving the accuracy and consistency of the acquired data, and ultimately enhancing the reliability of the feeder test results. This achieves the goal of reducing time and labor costs while improving the efficiency and reliability of feeder test. Attached Figure Description

[0031] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0032] Figure 1 A schematic diagram of a feed test system for regional cathodic protection provided in an embodiment of this application;

[0033] Figure 2A schematic flowchart of a power supply test method for regional cathodic protection provided in an embodiment of this application. Figure 1 ;

[0034] Figure 3 A schematic flowchart of a power supply test method for regional cathodic protection provided in an embodiment of this application. Figure 2 ;

[0035] Figure 4 This is a schematic diagram of the structure of a control host provided in an embodiment of this application.

[0036] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0037] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0038] First, let me explain the terms used in this application:

[0039] Regional cathodic protection is a strategy that treats all objects within a designated area as a whole for cathodic protection, ensuring that all protected objects within the area are within a specified protection potential range. The advantages of regional cathodic protection include excellent protection, significantly reducing or preventing metal corrosion in electrolytes; and ease of implementation, making it convenient for large metal structures such as oil pipelines and offshore platforms.

[0040] Feeding tests are a method that uses a temporary anode ground bed to provide protective current to the protected object and determines the required current for cathodic protection through on-site testing. During the testing process, the feeding test is conducted directly on the actual structure and its environment, resulting in accurate and reliable test data that eliminates human estimations and assumptions and closely reflects the characteristics of the on-site environment.

[0041] Spontaneous potential (SPT) is the electrode potential of a metal in a corrosive system without the influence of external current. It is the potential relative to ground of a metal buried in soil when no external current is present. The formation of SPT is closely related to factors such as the material of the metal structure, its surface condition, soil conditions, and water content. It arises from the potential difference between the environment near the metal surface and the electrical properties of the metal surface itself. SPT is frequently used in corrosion and corrosion protection studies of metallic materials. SPT can reflect the electrochemical activity of a material surface and provide fundamental data for the design of cathodic protection systems.

[0042] The power outage potential is the potential of a metallic structure measured after the cathodic protection system is de-energized. It is an important parameter for evaluating the potential state of the metallic structure under power outage conditions. Measuring the power outage potential helps to understand the potential change of the metallic structure after the cathodic protection system is de-energized, and to evaluate the effectiveness of the cathodic protection system during power outages.

[0043] Polarization potential refers to the potential difference generated by an electric field acting on the molecules of a substance. When there is an imbalance of positive and negative charges in an object, the electric field will affect the arrangement of the molecules, thus leading to the generation of a potential difference. In engineering, polarization potential cannot be directly measured, and the potential at which the power is turned off is used as an approximation.

[0044] In related technologies, the feeder test used to determine the cathodic protection current of a region requires frequent manual measurement and recording, resulting in significant manpower and time costs. Moreover, manual operation is prone to errors, seriously affecting the accuracy of the feeder test results. At the same time, the existing feeder test process is cumbersome and inefficient, the data recording and processing are relatively complex, and the overall efficiency of the feeder test is low. The feeder test method suffers from technical problems such as long time consumption, low efficiency, and poor accuracy.

[0045] The feeder test system for regional cathodic protection provided in this application automates the acquisition and intelligent analysis of test data from the feeder test through a control host, reducing acquisition errors caused by human factors and improving the efficiency of data processing and analysis. Furthermore, automated acquisition and intelligent analysis reduce the time required for feeder tests, solving the technical problems of long testing time, low efficiency, and poor accuracy in feeder tests, and enabling the rapid and accurate determination of the feeder test scheme for cathodic protection current.

[0046] Figure 1 This diagram illustrates a feed-through test system for regional cathodic protection according to an embodiment of this application. This embodiment provides a feed-through test system for regional cathodic protection, used to quickly and accurately complete feed-through tests on the cathodic protection current of the test area. Figure 1As shown, a temporary ground bed (i.e., grounding electrode) 14 is laid on the ground 16 of the test area. A power supply device 13 is installed between the temporary ground bed 14 and the metal pipe 15 of the test area, forming a power supply loop. The power supply test system 10 includes: a control host 11 and a test tool 12 for testing the potential. Wherein:

[0047] Test tool 12 is set to test points in the test area;

[0048] The control host 11 communicates with the test tool 12 and the power supply device 13 respectively. The control host 11 is used to control the power supply device 13 to turn on and off, and to control the test tool 12 to collect the potential of the corresponding test point (including natural potential, on-state potential and off-state potential) with one click, and to acquire the collected potential (e.g., on-state potential or off-state potential) in real time.

[0049] The power supply device 13 is used to provide the current required for testing, and typically has a stable output voltage and current. The power supply loop refers to the current conduction path consisting of the power supply device 13, the temporary ground bed 14, the metal conduit 15 in the test area, and the connecting wires between them. In the power supply loop, the temporary ground bed 14 is a temporary anode ground bed. Current flows from the power supply device 13, through the temporary ground bed 14 into the soil, then through the soil to the metal conduit 15 in the test area, and finally back to the power supply device 13, forming a complete current loop.

[0050] Specifically, when using the power supply test system 10 to conduct power supply tests on the test area, a power supply circuit needs to be established first. Specifically, temporary grounding materials are laid on the ground of the test area to form a temporary ground bed 14. The power supply equipment 13 is used to electrically connect the temporary ground bed 14 and the metal pipe 15 to ensure that the current can flow smoothly to form a power supply circuit.

[0051] In this embodiment, the control host 11 is the core component of the power supply test system 10, responsible for controlling the test process. It typically possesses high-performance computing capabilities and a communication interface, enabling communication with the power supply device 13 and the test tool 12. Optionally, the control host 11 and the test tool can establish a communication connection through communication pairing.

[0052] Test points are different locations selected within the test area to comprehensively evaluate cathodic protection performance. Different test points can correspond to different test conditions and geographical locations, and appropriate test points can be selected according to actual operating conditions in practical applications.

[0053] Optionally, a test tool 12 is deployed at each test point. Each test tool 12 can communicate with the control host 11. The control host 11 conducts power supply tests and acquires collected potential information through communication with the test tool 12 and the power supply device 13. For example, the control host 11 controls the power supply device 13 to turn on and stably output a fixed current for a period of time. Afterward, the control host 11 communicates with the test tool 12 to acquire the potential information acquired by the test tool 12. The potential information acquired at this time is the on-state potential. As another example, the control host 11 controls the power supply device 13 to turn on and stably output a fixed current for a period of time. Afterward, the control host 11 controls the power supply device 13 to turn off and simultaneously communicates with the test tool 12 to acquire potential information. The potential information acquired at this time is the off-state potential.

[0054] Optionally, the control host 11 also communicates with the test tool 12 to obtain the natural potential of the metal pipe 15 collected by the test tool 12.

[0055] There is a test loop between each test point and the metal pipe 15, and the natural potential on each test loop is collected by a test tool.

[0056] The feeder test system for regional cathodic protection provided in this application includes a control host and a test tool for testing potential. The control host enables one-button control of the test tool to acquire on-state and off-state potentials, achieving automated control and data acquisition for the feeder test, simplifying the test process and saving time and costs. Automated acquisition improves data accuracy and reliability, enabling rapid and accurate determination of the cathodic protection current.

[0057] To improve the testing efficiency of the feeder test system for regional cathodic protection, the structure of the feeder test system can be optimized.

[0058] Based on the above embodiments, in one implementation, the testing tool can be a portable testing tool to improve the portability and ease of use of the testing tool.

[0059] Portable testing tools refer to equipment or instruments that can be easily carried and moved for testing, measurement, detection, or diagnosis. Using portable testing tools reduces the difficulty of conducting power supply tests, enabling technicians to perform these tests quickly and effectively.

[0060] Furthermore, the test tool 12 includes a small reference electrode 121 and a small voltmeter 122, wherein the small voltmeter 122 and the small reference electrode 121 are electrically connected. It is understood that the portable test tool in this embodiment only retains the voltage testing function.

[0061] Small reference electrodes possess stable potential characteristics and do not directly participate in electrochemical reactions, thus serving as a reliable and constant potential reference point. Testing instruments incorporating small reference electrodes allow for precise control over the accuracy of potential measurements.

[0062] Optionally, the miniature reference electrode 121 has a tip, which is inserted into the soil at the corresponding test point. Through its portable and miniaturized design, this testing tool can be easily placed at any test point in the testing field, providing a wider testing coverage than traditional reference electrodes.

[0063] Still referencing Figure 1 The testing tool 12 also includes a transmission communication module 124 connected to a small voltmeter 122. This transmission communication module 124 is used to interact with the control host 11. The information interaction includes receiving control commands from the control host and sending the collected on-state or off-state potentials to the control host.

[0064] In practical applications, the test tool 12 obtains the control commands from the control host 11 through the transmission communication module 124. Then, the test tool 12 responds to the control commands, completes the acquisition of potential information, and transmits the corresponding potential information to the control host 11 through the transmission communication module 124.

[0065] Optionally, the acquisition command in the control command can be a one-time acquisition command or a real-time acquisition command. If the acquisition command is a one-time acquisition command, the test tool 12 acquires potential information once and transmits the potential information to the control host 11. If the acquisition command is a real-time acquisition command, the test tool 12 acquires potential information in real time and transmits the corresponding potential information to the control host 11 in real time.

[0066] The rapid communication and synchronization function between the control host and the testing tools enables the testing tools to receive commands from the control host and achieve one-click data acquisition. Testing tools at different test points can acquire the potential at the same time, improving the accuracy of power supply test data and the efficiency of the power supply test. Digital transmission via the communication module avoids potential human error, further improving data accuracy.

[0067] In this embodiment, the testing tools installed at the test points consist of a small reference electrode and a small voltmeter, enabling potential testing at each test point. Each testing tool has a communication module that can interact with the control host, uploading potential data from each test point to the control host in real time. Furthermore, the control host can send a one-click potential acquisition command to enable the testing tools to acquire potential data. The control host can also control the on / off state of the power supply equipment for the temporary ground bed to facilitate the acquisition of power outage potentials. Specifically, the potential of a metal structure, such as a metal pipe, relative to an electrolyte (such as soil or water) at the moment of power failure is used to assess the corrosion state of the metal structure, predict potential failures, and take timely maintenance measures.

[0068] Optionally, the test tool 12 also includes a display screen 125 connected to a small voltmeter to display the acquired potential. The display screen shows the accuracy of the loop connection. If the loop connection is accurate, the test loop is complete; if the loop connection is inaccurate, the wire connections and / or the connection of the device under test and / or the reference electrode connection are checked until accurate, completing the test loop construction. After the loop is constructed, the potential information of the current loop can be viewed on the display screen.

[0069] Furthermore, the testing tool 12 also includes a magnetic block 123 for adhering to the pipe in the testing area, the magnetic block 123 being electrically connected to a small voltmeter 122. The magnetic block 123 is magnetic and can firmly adhere to the surface of magnetic materials such as the metal pipe 15, providing a stable connection point and enabling rapid connection between the testing tool and the pipe in the testing area.

[0070] Furthermore, the control host 11 is also used to control the output current of the power supply device 13. Optionally, the required current for the power supply test, i.e., the output current, can be set on the control host 11. Commands are sent to the power supply device 13 via the embedded communication module within the control host 11. After receiving the command, the power supply device 13 responds and outputs the corresponding current. The control host enables automated control of the current output, reducing manual intervention and thus improving testing efficiency. Adjusting the output current of the power supply device via the control host helps reduce errors and improve the reliability of test results.

[0071] As one possible implementation, the control host has a built-in polarization potential data screening model, which is used to determine the power-off polarization potential based on the real-time acquired power-off potential.

[0072] Because the current and / or temporary ground bed location vary in different power supply tests, the fluctuation of the balancing current differs, resulting in variations in the power outage potential reading time. Therefore, it is necessary to determine an appropriate power outage potential reading time. The polarization potential data screening model built into the control host can obtain an appropriate power outage potential reading time based on the real-time acquired potential changes after the power supply equipment is powered off, and determine the corresponding power outage potential.

[0073] By using a built-in polarization potential data screening model, intelligent and user-friendly reading of polarization potential during power outages can be achieved, greatly simplifying the power supply test process, improving the accuracy of polarization potential reading during power outages, and thus enhancing the test precision of power supply tests.

[0074] Figure 2 A flowchart illustrating the power supply test method for regional cathodic protection provided in this application embodiment. Figure 1 This application provides a method for testing the power supply of regional cathodic protection, applied to the control host of a power supply testing system for regional cathodic protection as described in any of the above embodiments. Figure 2 As shown, the power supply test method for cathodic protection in this area includes:

[0075] Step a: The host computer controls the test tools in the power supply test system to collect the natural potential of the corresponding test point;

[0076] The control host sends acquisition commands to the testing tools in the power supply test system. The testing tools respond to the acquisition commands, acquire the potential information of the test circuit at the test point, and obtain the natural potential.

[0077] Step b: Control the power supply equipment in the power supply test system to turn on.

[0078] The control host sends a start command to the power supply equipment. Once the power supply equipment receives the start command, it will begin working according to the preset output parameters (such as output current magnitude and output voltage range) and control strategies (such as gradual current increase and constant voltage) set by the control host. At the same time, the control host will continuously monitor the output parameters of the power supply equipment and the response of the load equipment to ensure the smooth progress of the power supply test.

[0079] Optionally, before turning on the power supply equipment, the natural potential should also be collected using test tools deployed at test points. The collection of natural potential can be achieved through communication between the control host and the test tools.

[0080] Step c: After the power supply equipment has been running for a set period of time, control the power supply equipment to be turned off, and control the test tool in the power supply test system to collect the power outage potential of the corresponding test point.

[0081] After the power supply equipment has operated stably for a certain period of time according to preset output parameters and control strategies, the control host sends a command to shut down the power supply equipment. The purpose of achieving stable operation for a certain period is to ensure sufficient polarization of the current test area, thereby guaranteeing the stability and reliability of the test results. While the power supply equipment is shut down, the control host simultaneously controls the testing tools to collect potential data at each test point in real time. The polarization potential data screening model in the control host can identify fluctuations in the balance current based on the collected potential data and obtain the corresponding power-off potential.

[0082] Step d: Determine the polarization potential of the power failure electrode based on the real-time acquired power failure potential.

[0083] The polarization potential data screening model in the control host obtains the polarization potential of the power outage under this power supply test based on the obtained power outage potential.

[0084] Step e: Under the condition that the de-polarization potential meets the requirements of the power supply test, record the natural potential, the de-polarization potential, and the output voltage and output current of the power supply equipment corresponding to the de-polarization potential.

[0085] Based on whether the polarization potential of the de-polarized electrode meets the requirements of the power supply test, it is determined whether the cathodic protection scheme corresponding to the current preset output parameters can achieve the purpose of target cathodic protection. Among them, the power supply test requirements include: target potential deviation.

[0086] In this step, firstly, it is determined whether the natural potential and the de-polarization potential meet the requirements of the power supply test.

[0087] If the difference between the natural potential and the de-polarization potential is greater than or equal to the target potential offset, the power supply test requirements are considered met. In this case, the equipotential data of the natural potential and the de-polarization potential, along with the preset output parameters, are recorded. The potential data also includes the on-state potential; the preset output parameters include the output voltage and output current of the power supply equipment corresponding to the de-polarization potential.

[0088] Optionally, the target potential offset can be 100mV. If the depolarization potential does not meet the requirements of the power supply test, the power supply test should be repeated.

[0089] If the difference between the natural potential and the de-polarization potential is less than the target potential offset, the power supply test requirements are not met.

[0090] Optionally, if the polarization potential of the de-polarization does not meet the requirements of the power supply test, adjust the current output of the power supply equipment and execute steps b to d until the polarization potential of the de-polarization meets the requirements of the power supply test.

[0091] By appropriately adjusting the output current of the power supply equipment, the polarization potential at the disconnection point is altered, thereby ensuring that the natural potential and the polarization potential at the disconnection point meet the target potential offset. Specifically, the output current of the power supply equipment is adjusted, steps a to c are repeated, and it is determined whether the newly obtained polarization potential at the disconnection point meets the requirements of the power supply test. Through multiple iterations and adjustments of the output current of the power supply equipment, the accuracy and effectiveness of the power supply test can be ensured.

[0092] If the output current of the power supply equipment is iterated and adjusted multiple times, the resulting polarization potential still does not meet the requirements of the power supply test. Current power supply test conditions may be limited, making it impossible to meet the test requirements simply by adjusting the current.

[0093] Furthermore, if the polarization potential after the de-polarization does not meet the requirements of the power supply test, a temporary ground bed is re-laid, a power supply circuit is built, and steps b to d are executed until the polarization potential after the de-polarization meets the requirements of the power supply test.

[0094] Considering that factors such as soil and medium conductivity, humidity, temperature, and chemical properties can all affect the polarization potential during power outage, a suitable location was selected in the test area to re-lay a temporary ground bed. A power supply circuit was then constructed based on the new temporary ground bed, and the test was repeated. The polarization potential during power outage under the new temporary ground bed conditions was evaluated to determine if it met the requirements of the power supply test. If the test results still did not meet the requirements, further adjustments were needed to the output current of the power supply equipment and / or the location of the temporary ground bed to ultimately find the optimal output current of the power supply equipment and the location of the temporary ground bed that met the requirements of the power supply test.

[0095] In one possible implementation, the control host has a built-in polarization potential data screening model to determine the power-off polarization potential based on the real-time acquired power-off potential, including:

[0096] The real-time acquired power-off potential is input into the polarization potential data screening model for polarization potential data screening processing, and the output of the polarization potential data screening model is obtained. The polarization potential data screening model is used to generate a power-off potential decay curve based on the real-time acquired power-off potential, and the power-off polarization potential is read from the power-off potential decay curve.

[0097] The power outage potential decay curve is a curve recording the change in potential over time from the start of power outage until the potential stabilizes. The polarization potential data screening model uses real-time acquired power outage potentials to correlate potential values ​​with time, plotting them as a curve to obtain the power outage potential decay curve. The potential value corresponding to the point of greatest change in the power outage potential decay curve is the power outage polarization potential.

[0098] The feeder test method for regional cathodic protection provided in this application adopts a regional cathodic protection feeder test system. It uses testing tools for one-click data acquisition, reducing human error. The polarization potential data screening model in the control host allows for convenient and rapid acquisition of polarization potential, improving feeder test efficiency. Furthermore, after adjusting the temporary ground bed position, there is no need to repeatedly adjust the testing tools at the test points, further improving feeder test efficiency. This enables rapid and accurate determination of the cathodic protection current.

[0099] Figure 3 A flowchart illustrating the power supply test method for regional cathodic protection provided in this application embodiment. Figure 2 .like Figure 3 As shown, in this embodiment... Figure 2 Based on the examples, the power supply test method for regional cathodic protection is described in detail. The method includes:

[0100] S301. Collect the natural potential of the metal pipe.

[0101] In this step, communication pairing is first established between the testing tool and the control host. Different locations are selected as testing points within the testing area, such as an oil and gas field station. The reference electrode with a pointed tip from the testing tool is inserted into the soil at each testing point, and the magnetic block of the testing tool is attached to the exposed surface of the metal pipeline. This allows the testing tool to measure the natural potential of the metal pipeline. The readings on the testing tool's display screen can, to some extent, verify the accuracy of the circuit connection. The testing tool synchronously transmits the collected potential to the control host.

[0102] The control host can control the testing tools to collect the potential of the corresponding test points with one click.

[0103] S302. Set up the power supply circuit.

[0104] First, temporary grounding material is laid on the ground in the test area to form a temporary ground bed, i.e., a grounding electrode. The temporary ground bed and the power supply equipment are electrically connected, as are the metal pipes, thus constructing a power supply loop between the temporary ground bed, the power supply equipment, and the metal pipes. Next, the control host is paired with the power supply equipment to establish communication between them. This allows the control host to control the switching of the power supply equipment and, consequently, the magnitude of the output current of the power supply equipment.

[0105] S303. Conduct power supply test.

[0106] The power supply equipment is started by controlling the host computer. The power supply equipment operates stably for a set duration according to the set output current. This set duration is the polarization time required for the current test area to be fully polarized, and is set according to the actual scenario; for example, the set duration is 2 hours, etc. After the power supply equipment has been running for the set duration, the host computer controls the test tools to collect the polarization potential during operation. Using the control function of the host computer, the power supply equipment is switched off, and simultaneously, the test tools are controlled with a single button to collect the potential at the corresponding test points. Potential data from all test tools is acquired and stored on the host computer. This potential data includes both the natural potential and the polarization potential during disconnection.

[0107] Optionally, during the operation of the power supply equipment, the control host controls the testing tool to collect the energized potential. At this time, the potential data stored on the control host includes: natural potential, energized potential, and de-energized potential.

[0108] A power supply test can be completed through the above steps S301-S303.

[0109] Determine whether the currently obtained disconnection polarization potential meets the target potential offset. If the disconnection polarization potential meets the target potential offset, then end the power supply test. For example, the target potential offset can be specifically 100mV.

[0110] If the polarization potential of the de-polarization electrode does not meet the target potential offset and the current output magnitude does not reach the preset boundary value, adjust the current output magnitude and repeat step S303.

[0111] If the polarization potential of the de-polarization electrode does not meet the target potential offset, and the current output reaches the preset boundary value, proceed to step 304.

[0112] S304. Adjust the temporary ground bed.

[0113] Select another suitable location in the test area as a temporary ground bed, and rebuild the power supply circuit through step S302. Repeat step S303 until the test potential of all test tools achieves the set potential offset, and the power supply test is completed.

[0114] The power supply test method for regional cathodic protection provided in this application uses a portable small test tool, which focuses on voltage testing and can be flexibly deployed at different test potentials. It realizes rapid communication between the test tool and the control host, enabling synchronous one-click acquisition of potential data, ensuring consistent potential acquisition time, and greatly improving the efficiency of power supply testing, increasing work efficiency by more than 80%.

[0115] In summary, the regional cathodic protection power supply test system and method provided in this application differ from existing traditional techniques involving multiple tests by personnel in at least the following three aspects:

[0116] Firstly, this application uses a portable and miniaturized testing tool that retains only the voltage testing function. It can be easily placed at any point that needs to be tested in the testing site, and can cover a wider range of tests than traditional reference electrodes.

[0117] Secondly, the rapid communication and synchronization function between the testing tools and the control host enables one-click data acquisition after the host command is issued, allowing simultaneous acquisition of potential at the same moment, which greatly ensures the accuracy of pipeline on / off potential testing. Furthermore, after adjusting the temporary ground bed position, this application will save a significant amount of testing time, excluding the time required for pre-positioning the testing tools.

[0118] Thirdly, the control of temporary power supply equipment and pipeline potential acquisition are controlled simultaneously. The control host has a built-in polarization potential data screening model, which can easily read the polarization potential during power outages. This improves the accuracy of power outage polarization potential testing compared to traditional manual testing.

[0119] Figure 4 This is a schematic diagram of the structure of the control host provided in an embodiment of this application. Figure 4 As shown, the control host 40 provided in this embodiment includes at least one processor 401 and a memory 402. Optionally, the control host 40 further includes a communication component 403. The processor 401, memory 402, and communication component 403 are connected via a bus 404. The communication component 403 is used to communicate with a transmission communication module in the testing tool.

[0120] In a specific implementation, at least one processor 401 executes computer execution instructions stored in memory 402, causing at least one processor 401 to perform the above-described method.

[0121] The specific implementation process of processor 401 can be found in the above method embodiments, and its implementation principle and technical effect are similar. It will not be repeated here.

[0122] In the above embodiments, it should be understood that the processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), etc. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in this invention can be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules within the processor.

[0123] The memory may include random access memory (RAM) and may also include non-volatile memory (NVM), such as at least one disk storage device.

[0124] The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of illustration, the buses shown in the accompanying drawings are not limited to a single bus or a single type of bus.

[0125] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the above-described method.

[0126] This application also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the above-described method.

[0127] The aforementioned readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The readable storage medium can be any available medium accessible to a general-purpose or special-purpose computer.

[0128] An exemplary readable storage medium is coupled to a processor, enabling the processor to read information from and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can reside in an application-specific integrated circuit (ASIC). Alternatively, the processor and the readable storage medium can exist as discrete components in the device.

[0129] The division of units is merely a logical functional division; in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0130] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0131] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0132] If a function is implemented as 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 this invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0133] Those skilled in the art will understand that all or part of the steps of the above-described method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0134] Finally, it should be noted that other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A power supply test system for regional cathodic protection, characterized in that, A temporary ground bed is laid on the ground in the test area, and the power supply equipment is set between the temporary ground bed and the metal pipes in the test area to form a power supply circuit; The power supply test system includes: a control host and a test tool for testing the potential, wherein: The testing tool is set at the test points in the test area; The control host communicates with the testing tool and the power supply device respectively. The control host is used to control the on / off of the power supply device, and to control the testing tool to collect the potential of the corresponding test point with one click, and to acquire the collected potential in real time.

2. The power supply test system according to claim 1, characterized in that, The testing tool includes a small reference electrode and a small voltmeter, wherein the small voltmeter and the small reference electrode are electrically connected.

3. The power supply test system according to claim 2, characterized in that, The testing tool is also equipped with a transmission communication module connected to the small voltmeter. The transmission communication module is used to interact with the control host. The information interaction includes receiving control commands from the control host and sending the collected potential to the control host.

4. The power supply test system according to claim 2, characterized in that, The testing tool is also equipped with a display screen connected to the small voltmeter for displaying the collected potential.

5. The power supply test system according to any one of claims 1 to 4, characterized in that, The testing tool also includes a magnetic block for adsorbing onto the pipe in the testing area, the magnetic block being electrically connected to the miniature voltmeter.

6. The power supply test system according to any one of claims 1 to 4, characterized in that, The control host is also used to control the current output of the power supply device.

7. The power supply test system according to any one of claims 1 to 4, characterized in that, The control host has a built-in polarization potential data screening model, which is used to determine the polarization potential of the power failure based on the real-time acquired power failure potential.

8. A power supply test method for regional cathodic protection, characterized in that, A control host applied to a feeder test system for regional cathodic protection as described in any one of claims 1 to 7, wherein the feeder test method for regional cathodic protection includes: Step a: Control the test tool in the power supply test system to collect the natural potential of the corresponding test point; Step b: Control the power supply device in the power supply test system to turn on; Step c: After the power supply equipment has been running for a set period of time, control the power supply equipment to be turned off, and control the test tool in the power supply test system to collect the power failure potential of the corresponding test point; Step d: Determine the polarization potential of the power failure based on the real-time acquired power failure potential; Step e: If the de-polarization potential meets the requirements of the power supply test, record the natural potential, the de-polarization potential, and the output voltage and output current of the power supply device corresponding to the de-polarization potential.

9. The power supply test method according to claim 8, characterized in that, Also includes: If the polarization potential of the de-polarization does not meet the requirements of the power supply test, adjust the current output of the power supply equipment and execute steps b to d until the polarization potential of the de-polarization meets the requirements of the power supply test. And / or, if the polarization potential of the de-polarization does not meet the requirements of the power supply test, a temporary ground bed is redeployed, a power supply circuit is built, and steps b to d are performed until the polarization potential of the de-polarization meets the requirements of the power supply test.

10. The power supply test method according to claim 8 or 9, characterized in that, The control host has a built-in polarization potential data screening model. The step of determining the power-off polarization potential based on the real-time acquired power-off potential includes: The real-time acquired power-off potential is input into the polarization potential data screening model for polarization potential data screening processing to obtain the power-off polarization potential output by the polarization potential data screening model. The polarization potential data screening model is used to generate a power-off potential decay curve based on the real-time acquired power-off potential, and to read the power-off polarization potential from the power-off potential decay curve.

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