WO2023184949A1 - Appareil à base de surveillance électromagnétique et procédé de surveillance de module de prise chaude de borne de distribution - Google Patents

Appareil à base de surveillance électromagnétique et procédé de surveillance de module de prise chaude de borne de distribution Download PDF

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Publication number
WO2023184949A1
WO2023184949A1 PCT/CN2022/127213 CN2022127213W WO2023184949A1 WO 2023184949 A1 WO2023184949 A1 WO 2023184949A1 CN 2022127213 W CN2022127213 W CN 2022127213W WO 2023184949 A1 WO2023184949 A1 WO 2023184949A1
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Prior art keywords
module
signal
magnetic
electrical signal
frequency domain
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PCT/CN2022/127213
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English (en)
Chinese (zh)
Inventor
潘松波
吴伟
杨玺
张锦添
陈锦洪
张浩民
吴菲菲
马超
林希
邝朝炼
胡泰
武建平
徐伟斌
赖奎
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广东电网有限责任公司江门供电局
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Publication of WO2023184949A1 publication Critical patent/WO2023184949A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere

Definitions

  • the present invention relates to the technical field of power distribution fault monitoring, and in particular to a monitoring device and method for hot-swappable modules of power distribution terminals based on electromagnetic monitoring.
  • the hot-swappable module itself lacks effective protection, resulting in frequent abnormal module operation.
  • there is a single technical solution for the protection of hot-swappable module applications for In terms of processing abnormal working modules, there is a lack of effective adaptive application strategies, a single online diagnosis method for hot-swappable modules, and a lack of corresponding strategies for rapid "isolation" of abnormal modules.
  • it is difficult to quickly locate abnormal working modules resulting in This greatly increases the time and cost of operation and maintenance.
  • the invention provides a hot-swappable module monitoring device and method for distribution terminals based on electromagnetic monitoring, which solves the technical problems of lack of rapid isolation of abnormal modules and difficulty in quickly locating abnormal working modules.
  • the first aspect of the present invention provides a power distribution terminal hot-swappable module monitoring device based on electromagnetic monitoring, which is applied to hot-swappable modules.
  • the hot-swappable module includes a plurality of functional modules and a primary circuit, Includes: magnetic sensing module, electromagnetic monitoring module, main control module and power-off execution module;
  • the magnetic sensing module is used to collect the magnetic signals of each functional module in a preset frequency domain, and is also used to send the magnetic signals to the electromagnetic monitoring module;
  • the electromagnetic monitoring module is used to collect the first electrical signal of the primary line, and is also used to convert the magnetic signal sent by the electromagnetic monitoring module into a second electrical signal. It is also used to convert the first telecommunications and The second electrical signals are respectively sent to the main control module through multiple channels;
  • the main control module is used to determine whether the first electrical signal and the second electrical signal are abnormal, and is also used to send the abnormality determination result to the power-off execution module;
  • the power-off execution module is used to perform a power-off operation on the circuit between the corresponding primary line and the connected functional module if it is determined that the first electrical signal is abnormal; and is also used to perform a power-off operation if it is determined that the first electrical signal is abnormal.
  • the corresponding functional module is powered off.
  • the magnetic sensing module includes a base plate, a spiral coil, a contact module, a first frequency domain module, a second frequency domain module and a third frequency domain module;
  • the spiral coil is provided on the bottom plate, the spiral coil is located above the functional module, the spiral coil is formed with a plurality of spiral spacing areas along the length direction, and the spiral spacing areas are provided with magnet blocks;
  • each of the contact modules includes two contacts.
  • the two contacts are respectively disposed on both sides of the spiral coil.
  • Each of the contact modules The coil lengths between the two contacts corresponding to the group are different;
  • the three contact modules are electrically connected to the first frequency domain module, the second frequency domain module and the third frequency domain module respectively;
  • the first frequency domain module is used to filter the magnetic signals collected by the corresponding contact module according to the preset first magnetic frequency domain, thereby only allowing magnetic signals in the preset first magnetic frequency domain. signal passes;
  • the second frequency domain module is used to filter the magnetic signals collected by the corresponding contact module according to the preset second magnetic frequency domain, thereby only allowing magnetic signals in the preset second magnetic frequency domain. signal passes;
  • the third frequency domain module is used to filter the magnetic signals collected by the corresponding contact module according to the preset third magnetic frequency domain, thereby only allowing magnetic signals in the preset third magnetic frequency domain. The signal passes.
  • the main control module includes a signal processing module, a first signal analysis module, a second signal analysis module and an output module;
  • the signal processing module is used to filter and amplify the first electrical signal and the second electrical signal, and is also used to send the filtered and amplified first electrical signal and the second electrical signal to the first signal analysis module and the second signal analysis module;
  • the first signal analysis module is used to determine whether the first electrical signal has overvoltage or voltage loss. If it is determined that the first electrical signal has overvoltage or voltage loss, a first power-off signal is generated and sent to the first electrical signal. Described output module;
  • the first signal analysis module is used to determine whether the second electrical signal exceeds a preset voltage threshold. If it is determined that the second electrical signal exceeds the preset voltage threshold, a second power-off signal is generated and sent. to the output module;
  • the output module is used to send the first power-off signal and the second power-off signal to the power-off execution module.
  • the first frequency domain module, the second frequency domain module and the third frequency domain module are each provided with a debugging resonant circuit, and the debugging resonant circuit is used to adjust the peak range of the corresponding magnetic frequency domain.
  • the device further includes an early warning module, configured to receive a power outage signal generated when the power outage execution module performs a power outage operation, thereby issuing an early warning signal.
  • an early warning module configured to receive a power outage signal generated when the power outage execution module performs a power outage operation, thereby issuing an early warning signal.
  • the present invention also provides a method for monitoring hot-swappable modules of power distribution terminals based on electromagnetic monitoring, which is applied to hot-swappable modules.
  • the hot-swappable modules include multiple functional modules and primary circuits, including the following step:
  • this method also includes:
  • the magnetic signal is filtered according to a preset third magnetic frequency domain, so that only magnetic signals in the preset third magnetic frequency domain are allowed to pass.
  • the circuit between the corresponding primary circuit and the connected functional module is Perform a power-off operation; if it is determined that the second electrical signal is abnormal, the steps of power-off operation on the corresponding functional module specifically include:
  • the circuit between the corresponding primary line and the functional module connected to it is powered off according to the first power-off signal, and the corresponding functional module is powered off according to the second power-off signal.
  • this method also includes:
  • this method also includes:
  • the present invention collects the magnetic signals of each functional module in the preset frequency domain through the magnetic sensing module, and then collects the first electrical signal of the primary line through the electromagnetic monitoring module, and converts the magnetic signal into a second electrical signal, which is passed through the main control module. Determine whether the first electrical signal and the second electrical signal are abnormal. If it is determined that the first electrical signal is abnormal, then the circuit between the corresponding primary line and the connected functional module is powered off. If it is determined that the second electrical signal is abnormal, When the electrical signal is abnormal, the corresponding functional module is powered off. In this way, abnormal modules can be quickly powered off and isolated. At the same time, electrical signals can also be collected through different collection methods to quickly locate abnormal modules.
  • Figure 1 is a schematic structural diagram of a distribution terminal hot-swappable module monitoring device based on electromagnetic monitoring provided by an embodiment of the present invention
  • Figure 2 is a schematic structural diagram of a magnetic sensing module provided by an embodiment of the present invention.
  • Figure 3 is a flow chart of a method for monitoring hot-swappable modules of power distribution terminals based on electromagnetic monitoring provided by an embodiment of the present invention
  • Figure 4 is a flow chart of step S2 of a method for monitoring hot-swappable modules of distribution terminals based on electromagnetic monitoring provided by an embodiment of the present invention.
  • the present invention provides a distribution terminal hot-swappable module monitoring device based on electromagnetic monitoring, which is applied to hot-swappable modules.
  • the hot-swappable module includes multiple functional modules and primary circuits. It includes: magnetic sensing module 10, electromagnetic monitoring module 20, main control module 30 and power-off execution module 40;
  • the functional modules include power supplies, signal acquisition modules, MCU modules, etc.
  • the primary circuit includes the voltage input circuit of the hot-swappable module and the connections between each functional module.
  • the magnetic sensing module 10 is used to collect the magnetic signals of each functional module in the preset frequency domain, and is also used to send the magnetic signals to the electromagnetic monitoring module 20;
  • each functional module will generate a magnetic signal in a predetermined frequency domain when working, and the magnetic signal of the corresponding functional module can be obtained through the magnetic sensing module 10 .
  • the electromagnetic monitoring module 20 is used to collect the first electrical signal of the primary line, and is also used to convert the magnetic signal sent by the electromagnetic monitoring module 20 into a second electrical signal. It is also used to transmit the first telecommunications and the second electrical signal through multiple channels. Sent to the main control module 30 respectively;
  • the first electrical signal and the second electrical signal acquired by the electromagnetic monitoring module 20 correspond to different modules. Therefore, the first electrical signal and the second electrical signal are transmitted separately through multiple channels, so that the first electrical signal and the second electrical signal are transmitted separately. The first electrical signal and the second electrical signal are classified without interfering with each other.
  • the main control module 30 is used to determine whether the first electrical signal and the second electrical signal are abnormal, and is also used to send the abnormality determination result to the power-off execution module 40;
  • the power-off execution module 40 is used to perform a power-off operation on the circuit between the corresponding primary line and the connected functional module if the first electrical signal is determined to be abnormal; and is also used to perform a power-off operation if the second electrical signal is determined to be abnormal. , then power off the corresponding functional module.
  • the invention provides a distribution terminal hot-swappable module monitoring device based on electromagnetic monitoring, which collects the magnetic signals of each functional module in a preset frequency domain through the magnetic sensing module 10, and then uses the electromagnetic monitoring module to 20 collects the first electrical signal of the primary line and converts the magnetic signal into a second electrical signal.
  • the main control module 30 determines whether the first electrical signal and the second electrical signal are abnormal. If it is determined that the first electrical signal is abnormal, then The circuit between the corresponding primary circuit and the connected functional module is powered off. If the second electrical signal is determined to be abnormal, the corresponding functional module is powered off. In this way, abnormal modules can be quickly powered off and isolated. At the same time, electrical signals can also be collected through different collection methods to quickly locate abnormal modules.
  • the magnetic sensing module 10 includes a base plate 11, a spiral coil 12, a contact module, a first frequency domain module, a second frequency domain module and a third frequency domain module;
  • a spiral coil 12 is provided on the bottom plate 11.
  • the spiral coil 12 is located above the functional module.
  • the spiral coil 12 is formed with a plurality of spiral spacing areas along the length direction, and the spiral spacing areas are provided with magnet blocks 14;
  • the base plate 11 is made of a non-magnetic aluminum plate
  • the pitch of the spiral coil 12 is 15-20 mm
  • the magnetic block 14 is made of No. 10 steel with good magnetic permeability.
  • each contact module includes two contacts 13.
  • the two contacts 13 are respectively disposed on both sides of the spiral coil 12, and each contact module corresponds to two contacts.
  • Coil lengths vary between 13;
  • the three contact modules are electrically connected to the first frequency domain module, the second frequency domain module and the third frequency domain module respectively;
  • the first frequency domain module is used to filter the magnetic signals collected by the corresponding contact module according to the preset first magnetic frequency domain, thereby only allowing magnetic signals in the preset first magnetic frequency domain to pass;
  • the second frequency domain module is used to filter the magnetic signals collected by the corresponding contact module according to the preset second magnetic frequency domain, thereby only allowing magnetic signals in the preset second magnetic frequency domain to pass;
  • the third frequency domain module is used to filter the magnetic signals collected by the corresponding contact module according to the preset third magnetic frequency domain, thereby only allowing the magnetic signals in the preset third magnetic frequency domain to pass.
  • the working process of the magnetic sensing module is:
  • the hot-swappable functional module generates a magnetic field in the space when working.
  • the spiral coil 12 senses the magnetic signal, it sends the magnetic signal to the frequency domain module through the contacts at both ends.
  • the frequency domain module filters the corresponding magnetic signal, thereby only allowing the magnetic signal in the preset magnetic frequency domain to pass, thereby obtaining the magnetic signal in the specified frequency domain.
  • three frequency domain modules are divided into low-frequency magnetic signals, medium-frequency magnetic signals, and high-frequency magnetic signals, where the first frequency domain module, the second frequency domain module, and the third frequency domain module are all configured
  • a debugging resonant circuit which is used to adjust the peak range of the corresponding magnetic frequency domain to make relevant parameters adjustable, including the peak-to-peak value of the output voltage.
  • the low/medium/high frequency debugging circuit is used to perform low/medium/high frequency respectively.
  • the output voltage peak-to-peak value E is used as the observation object, and the maximum output voltage peak-to-peak value E is used as the debugging target, and the position of the corresponding contact is adjusted to obtain the corresponding low/medium/high frequency Output signal, after obtaining the maximum output voltage peak-to-peak value E, record the position of the corresponding contact to complete the debugging process; after completing the debugging of the contact position, debug the values of the series and parallel resonant circuits in order to obtain the maximum output
  • the voltage peak value E is used as the debugging target.
  • the debugging results are recorded; during the debugging process, the low-frequency signal band is defined as ⁇ 300Hz, the medium-frequency signal band is defined as 300Hz-20kHz; the high-frequency signal band is defined as >20kHz.
  • the main control module 30 includes a signal processing module, a first signal analysis module, a second signal analysis module and an output module;
  • the signal processing module is used to filter and amplify the first electrical signal and the second electrical signal, and is also used to send the filtered and amplified first electrical signal and the second electrical signal to the first signal analysis module and second signal analysis module;
  • the first signal analysis module is used to determine whether the first electrical signal has overvoltage or voltage loss. If it is determined that the first electrical signal has overvoltage or voltage loss, generate a first power-off signal and send it to the output module;
  • the first signal analysis module is used to determine whether the second electrical signal exceeds the preset voltage threshold. If it is determined that the second electrical signal exceeds the preset voltage threshold, generate a second power-off signal and send it to the output module;
  • the output module is used to send the first power-off signal and the second power-off signal to the power-off execution module 40 .
  • this embodiment realizes online status monitoring and abnormal status identification of the hot-swappable module of the power distribution terminal by monitoring the electrical signals of the primary line and functional modules, wherein it is determined whether the first electrical signal is Overvoltage (such as actual voltage > 1.2 times the rated voltage) or undervoltage (such as actual voltage ⁇ 0.8 times the rated voltage) is used to determine whether to perform a power-off operation. If the voltage of the primary line is abnormal, a power-off operation is performed to prevent various The hot-swappable module is affected by abnormal primary line impact;
  • Overvoltage such as actual voltage > 1.2 times the rated voltage
  • undervoltage such as actual voltage ⁇ 0.8 times the rated voltage
  • the second electrical signal is abnormal (for example, if the actual voltage is 0.9-1.1 times the rated voltage, it is recorded as normal) to determine whether the power supply of the hot-swappable module is abnormal.
  • the system also includes an early warning module, configured to receive a power outage signal generated when the power outage execution module 40 performs a power outage operation, thereby issuing an early warning signal.
  • an early warning module configured to receive a power outage signal generated when the power outage execution module 40 performs a power outage operation, thereby issuing an early warning signal.
  • the present invention provides a method for monitoring hot-swappable modules of distribution terminals based on electromagnetic monitoring, which is applied to hot-swappable modules.
  • the hot-swappable modules include multiple functional modules and primary circuits. Includes the following steps:
  • S2 Determine whether the first electrical signal and the second electrical signal are abnormal. If it is determined that the first electrical signal is abnormal, then power off the line between the corresponding primary line and the connected functional module; if it is determined that the second electrical signal is abnormal, When the electrical signal is abnormal, the corresponding functional module is powered off.
  • the method further includes:
  • the magnetic signal is filtered according to the preset third magnetic frequency domain, so that only the magnetic signal in the preset third magnetic frequency domain is allowed to pass.
  • step S2 specifically includes:
  • S202 Determine whether the first electrical signal has overvoltage or voltage loss. If it is determined that the first electrical signal has overvoltage or voltage loss, generate a first power-off signal;
  • S203 Determine whether the second electrical signal exceeds the preset voltage threshold. If it is determined that the second electrical signal exceeds the preset voltage threshold, generate a second power-off signal;
  • the method further includes:
  • the method further includes:
  • the disclosed devices and methods can be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or integrated. to another system, or some features can be ignored, or not implemented.
  • the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.
  • a unit described as a separate component may or may not be physically separate.
  • a component shown as a unit may or may not be a physical unit, that is, it may be located in one place, or it may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit.
  • the above integrated units can be implemented in the form of hardware or software functional units.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)

Abstract

L'invention concerne un appareil à base de surveillance électromagnétique et un procédé de surveillance d'un module de prise chaude d'une borne de distribution. L'appareil est caractérisé en ce que des signaux magnétiques de modules fonctionnels dans un domaine de fréquence prédéfini sont acquis au moyen d'un module de détection magnétique (10), puis un premier signal électrique d'un circuit primaire est acquis au moyen d'un module de surveillance électromagnétique (20), et les signaux magnétiques sont convertis en seconds signaux électriques; la détermination pour savoir si le premier signal électrique et les seconds signaux électriques sont anormaux au moyen d'un module de commande principal (30), s'il est déterminé que le premier signal électrique est anormal, une opération de mise hors tension est effectuée sur les lignes correspondantes entre le circuit primaire et les modules fonctionnels qui y sont connectés, et s'il est déterminé que le second signal électrique est anormal, une opération de mise hors tension est effectuée sur le module fonctionnel correspondant. Ainsi, un module anormal peut être rapidement mis hors tension et isolé, et des signaux électriques peuvent également être acquis dans différents modes d'acquisition, permettant ainsi l'exécution d'un positionnement rapide d'un module qui fonctionne anormalement.
PCT/CN2022/127213 2022-03-28 2022-10-25 Appareil à base de surveillance électromagnétique et procédé de surveillance de module de prise chaude de borne de distribution WO2023184949A1 (fr)

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Publication number Priority date Publication date Assignee Title
CN114689972A (zh) * 2022-03-28 2022-07-01 广东电网有限责任公司江门供电局 基于电磁监测的配电终端热插拔模块监测装置及方法

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CN114689972A (zh) * 2022-03-28 2022-07-01 广东电网有限责任公司江门供电局 基于电磁监测的配电终端热插拔模块监测装置及方法

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