Space ion flow field measurement system and method based on potential compensation

Abstract

The invention discloses a space ion flow field measurement system and method based on potential compensation, and belongs to the technical field of direct-current electric field measurement. The system comprises a measuring end and a local end, the measuring end is used for obtaining line parameter data of each pole wire of a direct current transmission line, carrying out space ion flow field measurement on sensitive points below the transmission line based on potential compensation, obtaining electric field measurement data, and transmitting the line parameter data, potential compensation data and the electric field measurement data to the local end. And the local end is used for drawing a result map of space ion flow field measurement according to the line parameter data, the potential compensation data and the electric field measurement data. The method can be used for measuring the sensitive point space ion flow field near the power transmission line.

Description

Technical Field

[0001] The present invention relates to the technical field of direct current electric field measurement, and more specifically, to a spatial ion flow field measurement system and method based on potential compensation. Background Art

[0002] When a DC transmission line is transmitting electricity over long distances, when the electric field strength on the surface of the transmission line exceeds the ionization strength of the air, the gas molecules on the surface of the transmission line will be ionized, generating corona discharge, and generating environmental impacts such as DC ion flow fields in the vicinity of the transmission line. Therefore, how to effectively measure and control these influencing factors is a major key technical issue that must be solved in the design, construction and operation of DC transmission projects.

[0003] The "Limits and Monitoring Methods for Synthetic Electric Fields in DC Transmission Projects" (GB 39220-2020), compiled by the Ministry of Environmental Protection and officially implemented at the end of 2020, clearly defines the monitoring requirements for balconies and platforms. The normalization of platform / balcony monitoring poses new challenges to the existing DC line ion flow field measurement and control.

[0004] The following are some of the problems that still exist in the actual measurement and analysis process:

[0005] (1) Existing DC ion flow field monitoring devices mainly use grounded field mills. The field mill probe needs to be placed above the ground to measure the ion flow field. Due to the serious electric field distortion near buildings, the monitoring environment of the field mill probe is greatly different from the calibration environment, which may lead to inaccurate measurements.

[0006] (2) The monitoring requirement for the industrial frequency electric field is 1.5 m above the ground in order to reflect the electric field strength level around the human body offline. However, the existing DC ion flow field measurement instruments cannot be used to measure DC ion flow fields in space due to the accumulation of ions on the probe surface. Summary of the invention

[0007] In view of the above problems, the present invention proposes a spatial ion flow field measurement system based on potential compensation, comprising: a measurement end and a local end;

[0008] The measuring end is used to obtain the line parameter data of each pole conductor of the DC transmission line, and based on the potential compensation, perform spatial ion flow field measurement on the sensitive points below the transmission line to obtain electric field measurement data, and transmit the line parameter data, potential compensation data and the electric field measurement data to the local end. The local end is used to draw a result diagram of the spatial ion flow field measurement based on the line parameter data, the potential compensation data and the electric field measurement data.

[0009] Optionally, the measuring end includes: a line parameter acquisition module, an electric field measurement module, a device support module and a space potential compensation module;

[0010] The line parameter acquisition module is used to obtain line parameter data of each pole conductor;

[0011] The electric field measurement module is used to perform spatial ion flow field measurement on sensitive points below the transmission line to obtain electric field measurement data;

[0012] The device support module is used to place the electric field measurement module in the air;

[0013] The spatial potential compensation module is used to provide a compensation voltage for the electric field measurement module when the electric field measurement module performs spatial ion flow field measurement on a sensitive point below the transmission line;

[0014] The compensation voltage is used to discharge the accumulated charge of the electric field measurement module.

[0015] Optional, line parameter data, including:

[0016] Data on the height of each pole conductor, the distance between conductor poles, the height of the ground wire and the distance between ground wires.

[0017] Optional, electric field measurement data, including:

[0018] The electric field strength amplitude data at the sensitive point under the transmission line.

[0019] Optional, line parameter acquisition module, including: laser rangefinder and transmission optical fiber;

[0020] The laser rangefinder is used to obtain line parameter data of each polar conductor;

[0021] The transmission optical fiber is used to transmit line parameter data.

[0022] Optionally, an electric field measurement module includes: an ion flow field measurement probe and a transmission optical fiber;

[0023] The ion flow field measurement probe is used to perform spatial ion flow field measurement on sensitive points below the transmission line;

[0024] The transmission optical fiber is used to transmit electric field measurement data.

[0025] Optionally, a device support module includes: an insulating bracket and an insulating clamp;

[0026] The top end of the insulating bracket is connected to an insulating clamp, and the ion flow field measurement probe is clamped by the insulating clamp so that the ion flow field measurement probe is suspended in the air.

[0027] Optional, space potential compensation module, including: DC voltage source, high-precision voltmeter, ammeter and current limiting resistor;

[0028] The DC voltage source is used to provide a compensation voltage;

[0029] The high-precision voltmeter is used to monitor the voltage value of the electric field measurement module;

[0030] The high-precision ammeter is used to monitor the current change of the electric field measurement module;

[0031] The current limiting resistor is used for compensation protection.

[0032] Optionally, the local end includes: a parameter transmission and receiving module, a potential compensation control module, and a data processing module;

[0033] The parameter transmission and receiving module is used to receive the line parameter data, potential compensation data and electric field measurement data transmitted by the measuring end, and transmit the line parameter data, potential compensation data and electric field measurement data to the data processing module;

[0034] The data processing module is used to draw a result diagram of the spatial ion flow field measurement according to the line parameter data, the potential compensation data and the electric field measurement data;

[0035] The potential compensation control module is used to adjust the magnitude of the compensation voltage.

[0036] On the other hand, the present invention also proposes a method for measuring a spatial ion flow field based on potential compensation, comprising:

[0037] At the measurement end, the line parameter data of each pole conductor of the DC transmission line is obtained, and based on potential compensation, the spatial ion flow field measurement is carried out for the sensitive points under the transmission line to obtain the electric field measurement data;

[0038] Transmitting the line parameter data, potential compensation data and electric field measurement data to the local end;

[0039] At the local end, a result diagram of the spatial ion flow field measurement is drawn according to the line parameter data, the potential compensation data and the electric field measurement data.

[0040] In yet another aspect, the present invention further provides a computing device, comprising: one or more processors;

[0041] a processor for executing one or more programs;

[0042] When the one or more programs are executed by the one or more processors, the above-described method is implemented.

[0043] In yet another aspect, the present invention further provides a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed, the method described above is implemented.

[0044] Compared with the prior art, the present invention has the following beneficial effects:

[0045] The present invention provides a space ion flow field measurement system based on potential compensation, comprising: a measurement end and a local end; the measurement end is used to obtain line parameter data of each pole conductor of a DC transmission line, and based on potential compensation, performs space ion flow field measurement on sensitive points below the transmission line to obtain electric field measurement data, and transmits the line parameter data, potential compensation data and electric field measurement data to the local end, and the local end is used to draw a result diagram of the space ion flow field measurement according to the line parameter data, the potential compensation data and the electric field measurement data. The present invention can be used to measure the space ion flow field at sensitive points near a transmission line. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 is a structural diagram of the system of the present invention;

[0047] Figure 2 A schematic diagram of an insulating clamp and an insulating bracket of the system of the present invention;

[0048] Figure 3 It is a schematic diagram of a potential compensation circuit of the system of the present invention;

[0049] Figure 4 The figure is a flow chart of the implementation of the system of the present invention. DETAILED DESCRIPTION

[0050] Now, exemplary embodiments of the present invention are described with reference to the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to disclose the present invention in detail and completely and to fully convey the scope of the present invention to those skilled in the art. The terms used in the exemplary embodiments shown in the accompanying drawings are not intended to limit the present invention. In the accompanying drawings, the same units / elements are marked with the same reference numerals.

[0051] Unless otherwise specified, the terms (including technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it is understood that the terms defined in commonly used dictionaries should be understood to have the same meanings as those in the context of the relevant fields, and should not be understood as idealized or overly formal meanings.

[0052] Embodiment 1:

[0053] The present invention proposes a spatial ion flow field measurement system based on potential compensation, such as Figure 1 As shown, it includes a line parameter acquisition module, an electric field measurement module and a device support module, a space potential compensation module, a parameter transmission and receiving module, a potential compensation control module, and a data processing module. Among them, the line parameter acquisition module, the electric field measurement module and the device support module, and the space potential compensation module are all measurement ends; the parameter transmission and receiving module, the potential compensation control module, and the data processing module are all local ends. The data of the measurement end is transmitted to the local end through the parameter transmission module, and the local end performs compensation potential control and data processing according to the parameters of the measurement end.

[0054] The measuring end of the space ion flow field measurement system based on potential compensation comprises: a line parameter acquisition module, an electric field measurement module and a device support module, and a space potential compensation module.

[0055] Among them, the line parameter acquisition module is used to obtain the height of each pole conductor, the distance between the conductor poles, the height of the ground wire, and the distance between the ground wires; the electric field measurement module is used to collect the electric field strength amplitude at the sensitive point position; the device support module is used to place the electric field measurement module in the air. The space potential compensation module is used to provide compensation voltage and realize the accumulated charge discharge of the electric field measurement module.

[0056] The local end includes: a parameter transmission and receiving module, a potential compensation control module, and a data processing module.

[0057] Among them, the parameter transmission and reception module is mainly composed of three parts: line parameter data transmission and reception, compensation potential, current parameter transmission and reception, and electric field measurement data transmission and reception. The line parameter data transmission and reception transmits the line parameters to the data processing module; the potential compensation control module transmits the compensation voltage and current measurement values ​​to the potential compensation control module; the electric field measurement data transmission and reception module transmits the real-time electric field measurement data to the data processing module. The potential compensation control module is mainly used to adjust the compensation voltage. The main function of the data processing module is to record, upload and draw corresponding graphics of the line parameters and measurement results.

[0058] The line parameter acquisition module includes a laser rangefinder and a transmission optical fiber. The line parameters are obtained by using the laser rangefinder and transmitted to the receiving module through optical fiber communication.

[0059] The electric field measurement module, such as Figure 2 As shown, it is mainly composed of an ion flow field measurement probe and a transmission optical fiber, which measures the field strength data at the sensitive point position and transmits it to the receiving module through the optical fiber.

[0060] The device support module is mainly composed of an insulating bracket and an insulating clamp, which ensures that the measuring probe is suspended in the air and can operate stably.

[0061] The space potential compensation module is as follows: Figure 3 As shown, it is composed of a DC voltage source, a high-precision voltmeter, an ammeter and a current limiting resistor. The DC voltage source provides a compensation voltage, the high-precision voltmeter monitors the voltage value, the high-precision ammeter monitors the current change, and the current limiting resistor protects the compensation module.

[0062] The parameter transmission and receiving module is composed of line parameter data transmission and reception, compensation potential, current parameter transmission and reception, and electric field measurement data transmission and reception, which converts the optical signal in the optical fiber into an electrical signal, which is used for receiving line parameters, potential compensation module data, and electric field measurement data respectively.

[0063] The potential compensation control module adjusts the voltage amplitude according to the voltage and current indications until potential compensation is achieved.

[0064] The data processing module has the main function of recording and uploading line parameters and measurement results and drawing corresponding graphs.

[0065] The implementation process of the above system is as follows: Figure 4 As shown, specifically including:

[0066] Step 1: Fix the measuring probe and connect the potential compensation device. Use an insulating clamp to fix the measuring probe on the insulating bracket, and ensure that the measuring probe is suspended in the air, carry out electric field measurement in a "probe-out" manner, and connect the space potential compensation module to the measuring probe.

[0067] Step 2: Compensation potential adjustment: Turn on the probe and potential compensation device, monitor the probe reading, compensation voltage reading and current reading in real time, judge the relationship between compensation voltage and space voltage according to the current reading, and adjust the compensation voltage until the current reading is close to zero.

[0068] Step 3: Transmit the results of compensation potential, space electric field, etc. When the current reading is stable at zero, fix the compensation voltage and carry out the measurement of space ion flow field. Record the data of compensation voltage, space electric field, line parameters, etc.

[0069] Preferably, the fixing of the measuring probe and the connection of the potential compensation device in step 1 include:

[0070] Step 11, fix the measuring probe on the insulating bracket using an insulating clamp to ensure that the measuring probe is suspended in the air and parallel to the ground;

[0071] Step 12: Connect the DC voltage source to the measuring probe via a current limiting resistor and an ammeter, and monitor the compensation voltage value with a high-precision voltmeter.

[0072] Preferably, the compensation potential adjustment in step 2 includes:

[0073] Step 21, turn on the ion flow field measurement probe and the high voltage source, and read the electric field measurement readings and the voltage and current readings.

[0074] Step 22, slowly increase the voltage, read the voltmeter and ammeter readings, if the ammeter reading is positive, continue to increase the compensation voltage; when the ammeter reading is negative, reduce the compensation voltage until the current reading is close to zero.

[0075] Embodiment 2:

[0076] The present invention also proposes a spatial ion flow field measurement method based on potential compensation, comprising:

[0077] At the measurement end, the line parameter data of each pole conductor of the DC transmission line is obtained, and based on potential compensation, the spatial ion flow field measurement is carried out for the sensitive points under the transmission line to obtain the electric field measurement data;

[0078] Transmitting the line parameter data, potential compensation data and electric field measurement data to the local end;

[0079] At the local end, a result diagram of the spatial ion flow field measurement is drawn according to the line parameter data, the potential compensation data and the electric field measurement data.

[0080] The invention can be used to measure the ion flow field in the space of sensitive points near the transmission line.

[0081] Embodiment 3:

[0082] Based on the same inventive concept, the present invention also provides a computer device, which includes a processor and a memory, wherein the memory is used to store a computer program, the computer program includes program instructions, and the processor is used to execute the program instructions stored in the computer storage medium. The processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. It is the computing core and control core of the terminal, which is suitable for implementing one or more instructions, and is specifically suitable for loading and executing one or more instructions in the computer storage medium to implement the corresponding method flow or corresponding functions, so as to implement the steps of the method in the above embodiment.

[0083] Embodiment 4:

[0084] Based on the same inventive concept, the present invention also provides a storage medium, specifically a computer-readable storage medium (Memory), which is a memory device in a computer device for storing programs and data. It is understandable that the computer-readable storage medium here can include both a built-in storage medium in a computer device and an extended storage medium supported by the computer device. The computer-readable storage medium provides a storage space, which stores the operating system of the terminal. In addition, one or more instructions suitable for being loaded and executed by a processor are also stored in the storage space, and these instructions can be one or more computer programs (including program codes). It should be noted that the computer-readable storage medium here can be a high-speed RAM memory or a non-volatile memory, such as at least one disk memory. The processor can load and execute one or more instructions stored in the computer-readable storage medium to implement the steps of the method in the above embodiment.

[0085] It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes. The schemes in the embodiments of the present invention may be implemented in various computer languages, for example, object-oriented programming language Java and literal scripting language JavaScript, etc.

[0086] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0087] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0088] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0089] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0090] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A spatial ion flow field measurement system based on potential compensation, characterized in that: include: Measurement end and local end; The measuring end is used to obtain the line parameter data of each pole conductor of the DC transmission line, and based on the potential compensation, perform spatial ion flow field measurement on the sensitive points below the transmission line to obtain electric field measurement data, and transmit the line parameter data, potential compensation data and the electric field measurement data to the local end. The local end is used to draw a result diagram of the spatial ion flow field measurement based on the line parameter data, the potential compensation data and the electric field measurement data.

2. The spatial ion flow field measurement system according to claim 1, characterized in that: The measuring end includes: a line parameter acquisition module, an electric field measurement module, a device support module and a space potential compensation module; The line parameter acquisition module is used to obtain line parameter data of each pole conductor; The electric field measurement module is used to perform spatial ion flow field measurement on sensitive points below the transmission line to obtain electric field measurement data; The device support module is used to place the electric field measurement module in the air; The spatial potential compensation module is used to provide a compensation voltage for the electric field measurement module when the electric field measurement module performs spatial ion flow field measurement on a sensitive point below the transmission line; The compensation voltage is used to discharge the accumulated charge of the electric field measurement module.

3. The spatial ion flow field measurement system according to claim 2, characterized in that: The line parameter data includes: Data on the height of each pole conductor, the distance between conductor poles, the height of the ground wire and the distance between ground wires.

4. The spatial ion flow field measurement system according to claim 2, characterized in that: The electric field measurement data includes: Electric field strength amplitude data at sensitive points below the transmission line.

5. The spatial ion flow field measurement system according to claim 2, characterized in that: The line parameter acquisition module includes: a laser rangefinder and a transmission optical fiber; The laser rangefinder is used to obtain line parameter data of each polar conductor; The transmission optical fiber is used to transmit line parameter data.

6. The spatial ion flow field measurement system according to claim 2, characterized in that: The electric field measurement module includes: an ion flow field measurement probe and a transmission optical fiber; The ion flow field measurement probe is used to perform spatial ion flow field measurement on sensitive points below the transmission line; The transmission optical fiber is used to transmit electric field measurement data.

7. The spatial ion flow field measurement system according to claim 2, characterized in that: The device support module comprises: an insulating bracket and an insulating clamp; The top end of the insulating bracket is connected to an insulating clamp, and the ion flow field measurement probe is clamped by the insulating clamp so that the ion flow field measurement probe is suspended in the air.

8. The spatial ion flow field measurement system according to claim 2, characterized in that: The space potential compensation module includes: a DC voltage source, a high-precision voltmeter, an ammeter and a current-limiting resistor; The DC voltage source is used to provide a compensation voltage; The high-precision voltmeter is used to monitor the voltage value of the electric field measurement module; The high-precision ammeter is used to monitor the current change of the electric field measurement module; The current limiting resistor is used for compensation protection.

9. The spatial ion flow field measurement system according to claim 1, characterized in that: The local end includes: a parameter transmission and receiving module, a potential compensation control module, and a data processing module; The parameter transmission and receiving module is used to receive the line parameter data, potential compensation data and electric field measurement data transmitted by the measuring end, and transmit the line parameter data, potential compensation data and electric field measurement data to the data processing module; The data processing module is used to draw a result diagram of the spatial ion flow field measurement according to the line parameter data, the potential compensation data and the electric field measurement data; The potential compensation control module is used to adjust the magnitude of the compensation voltage.

10. A method for measuring a spatial ion flow field based on potential compensation using any one of the spatial ion flow field measurement systems of claims 1 to 9, characterized in that: include: At the measurement end, the line parameter data of each pole conductor of the DC transmission line is obtained, and based on potential compensation, the spatial ion flow field measurement is carried out for the sensitive points under the transmission line to obtain the electric field measurement data; Transmitting the line parameter data, potential compensation data and electric field measurement data to the local end; At the local end, a result diagram of the spatial ion flow field measurement is drawn according to the line parameter data, the potential compensation data and the electric field measurement data.

11. A computer device, characterized in that: include: one or more processors; a processor for executing one or more programs; When the one or more programs are executed by the one or more processors, the method according to claim 10 is implemented.

12. A computer-readable storage medium, characterized in that: A computer program is stored thereon, and when the computer program is executed, the method according to claim 10 is implemented.

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