CN-121995156-A - Power grid line monitoring device and monitoring method based on intelligent sensing calculation through-bit SOC chip

CN121995156ACN 121995156 ACN121995156 ACN 121995156ACN-121995156-A

Abstract

The invention discloses a power grid line monitoring device based on a sense-through intelligent SOC chip, which comprises an SOC chip, a power supply unit, a current sampling circuit, a voltage sampling circuit, an HRF radio frequency front end peripheral circuit, a temperature and humidity sensor and a Bluetooth communication unit, wherein the SOC chip is respectively connected with the power supply unit, the current sampling circuit, the voltage sampling circuit, the HRF radio frequency front end peripheral circuit, the temperature and humidity sensor and the Bluetooth communication unit. The invention also discloses a monitoring method of the power grid line monitoring device based on the intelligent sensing and calculating through-position SOC chip. The invention solves the technical problems of asynchronous multi-parameter data, low fault discrimination accuracy and lack of intelligent prediction capability caused by the limited calculation power of the MCU and the discrete architecture of the modules of the existing power grid line monitoring device.

Inventors

LIU JINLONG
HU ZEXIN
LI JUN
YI SHIHUA
TANG KE
ZHOU YU

Assignees

威胜信息技术股份有限公司

Dates

Publication Date: 20260508
Application Date: 20260203

Claims (10)

1. Power grid line monitoring device based on sense and calculate logical position intelligence SOC chip, characterized by comprising: The system comprises an SOC chip, a power supply unit, a current sampling circuit, a voltage sampling circuit, an HRF radio frequency front end peripheral circuit, a temperature and humidity sensor and a Bluetooth communication unit, wherein the SOC chip is respectively connected with the power supply unit, the current sampling circuit, the voltage sampling circuit, the HRF radio frequency front end peripheral circuit, the temperature and humidity sensor and the Bluetooth communication unit; the power supply unit is used for taking power from the distribution line and supplying power for the device; the current sampling unit is used for converting the current of the phase line into a first voltage signal which can be identified by the SOC chip and connecting the first voltage signal into an ADC input interface of the SOC chip; the voltage sampling unit is used for converting the phase line electric field into a second voltage signal which can be identified by the SOC chip and connecting the second voltage signal into an ADC input interface of the SOC chip; the HRF radio frequency front end peripheral circuit is used for switching radio frequency transmitting/receiving modes; The temperature and humidity sensor is used for collecting the temperature and humidity of the surrounding environment of the device, converting the temperature and humidity sensor into a third voltage signal and a fourth voltage signal which can be identified by the SOC chip, and connecting the third voltage signal and the fourth voltage signal into an ADC input interface of the SOC chip.
2. The power grid line monitoring device based on the intelligent sense and communicate SOC chip of claim 1, wherein a rechargeable backup power supply is arranged in the power supply module; in a normal state, the power supply module is used for converting high-voltage alternating current of the distribution line into low-voltage direct current and supplying power for the device and the backup power supply; And in the power failure state, the backup power supply of the power supply module supplies power for the device.
3. The power grid line monitoring device based on the sense through bit intelligent SOC chip according to any one of claims 1-2, wherein the SOC chip comprises a processing core, a storage unit, a power management unit, a clock unit, a DMA controller and an NPU, wherein the processing core is respectively connected with the storage unit, the power management unit, the clock unit, the DMA controller and the NPU through a system bus.
4. The power grid line monitoring device based on the intelligent sense through bit SOC chip according to any one of claims 1-2, wherein the SOC chip comprises a wide-range ADC circuit unit provided with at least four channels, and the wide-range ADC circuit unit is respectively connected with a current sampling circuit, a voltage sampling circuit and a temperature and humidity sensor.
5. The power grid line monitoring device based on the intelligent sense through bit SOC chip according to any one of claims 1-2, wherein the power grid line monitoring device based on the intelligent sense through bit SOC chip further comprises a first frequency selection filter circuit, the first frequency selection filter circuit is connected with the SOC chip, and the first frequency selection filter circuit is used for filtering Beidou satellite signals received by an antenna.
6. The power grid line monitoring device based on the intelligent sense-through SOC chip of claim 5, wherein the SOC chip comprises a Beidou baseband processing unit, and the Beidou baseband processing unit is connected with a first frequency-selective filter circuit.
7. The power grid line monitoring device based on the intelligent sense through bit SOC chip of any of claims 1-2, wherein the SOC chip includes an HRF baseband processing unit, and the HRF baseband processing unit is connected to an HRF radio frequency front end peripheral circuit.
8. The power grid line monitoring device based on the intelligent sense-through SOC chip according to any one of claims 1-2, wherein the HRF radio frequency front end peripheral circuit comprises a receiving and transmitting switching circuit, a second frequency selecting filter circuit, a power amplifying circuit and an antenna, wherein the antenna is respectively connected with the second frequency selecting filter circuit and the power amplifying circuit, the second frequency selecting filter circuit and the power amplifying circuit are both connected with the receiving and transmitting switching circuit, and the receiving and transmitting switching circuit is connected with the SOC chip.
9. A monitoring method comprising the intelligent SOC chip based on the sensor-through bit monitoring device of any of claims 1-8, comprising the steps of: s1, powering up a system, starting a main thread, configuring operation parameters of each unit circuit, initializing a database, and monitoring the state of a sub-thread; s2, constructing a first sub-thread, and performing Beidou positioning and timing; acquiring current longitude and latitude, altitude information and clock information at fixed time; reading positioning information in a shared database of the equipment, judging whether longitude, latitude and altitude information in the current shared database is consistent with Beidou positioning or not, if not, reporting an event and updating the shared database; reading an equipment RTC clock, judging whether the current RTC clock is consistent with Beidou time service or not, and synchronizing the equipment RTC clock with Beidou clock information if the current RTC clock is inconsistent with the Beidou time service; S3, constructing a second sub-thread to acquire adjacent equipment data; Networking the Bluetooth communication unit with the adjacent equipment, acquiring current and voltage data with time marks of the adjacent equipment, and updating a shared database; s4, constructing a third sub-thread, and judging and predicting line faults; Current, voltage, temperature, humidity and altitude data of local and adjacent equipment are circularly collected, preprocessed and updated to a shared database, NPU is called, fault discrimination and prediction are carried out on a principal phase line according to five-dimensional data obtained by the equipment, fault discrimination and prediction are carried out on a three-phase line according to the five-dimensional data obtained by the equipment and the voltage and current of the adjacent phase, whether an event needing to be reported exists is judged, if the event exists, event reporting is executed, and the shared database is updated; s5, constructing a fourth sub-thread, and carrying out uplink communication; establishing a communication channel with the upper-layer equipment by adopting an HRF mode, responding to the communication of the upper-layer equipment in real time, judging whether the shared database needs to be updated, and if yes, updating the shared database; S6, constructing a fifth sub-thread, and carrying out local communication, state monitoring and indication; And responding to the maintenance interface communication in real time, monitoring the state acquisition interface, outputting a state indication, judging whether the shared database needs to be updated, and if so, updating the shared database.
10. The method for monitoring the power grid line monitoring device based on the intelligent sense through position SOC chip of claim 9, wherein the step S4 is specifically: s41, data acquisition and preliminary verification are carried out, current, voltage, temperature, humidity and altitude data of the principal phase are obtained, current and voltage data of the adjacent phase are obtained through a Bluetooth communication unit, and invalid values are removed; S42, data format standardization, unifying data sampling frequency, aligning time axis and converting data type; s43, denoising, namely, reducing redundancy of data by adopting a time domain denoising algorithm; S44, feature extraction, namely processing current, voltage, temperature, humidity and altitude multidimensional data in parallel, and carrying out harmonic analysis and trend feature extraction; S45, fault identification and traveling wave head identification, accelerating the operation of a deep learning model, carrying out model reasoning through matrix operation, and matching potential hidden danger, faults and traveling wave head feature libraries; S46, outputting a result, receiving an identification result, and judging whether to trigger an alarm and report an event according to a preset algorithm.

Description

Power grid line monitoring device and monitoring method based on intelligent sensing calculation through-bit SOC chip Technical Field The invention relates to the technical field of intelligent power grid line fault monitoring and positioning, in particular to a power grid line monitoring device based on a sense calculation general position intelligent SOC chip and a monitoring method thereof. Background The intelligent power grid distribution network line faults are characterized by multiple causes and complex scenes, lightning stroke faults frequently occur due to the fact that the air insulation strength of high-altitude areas is reduced, intermittent grounding is easy to occur in a humid environment, and cable aging invisible faults need early warning. The prior art mainly relies on an MCU to combine with a discrete sensor architecture, and has the following limitations that firstly, an MCU is adopted to carry out threshold judgment through the MCU, an external ADC and a temperature and humidity sensor are communicated through an SPI or an I 2 C interface, the defects are high data delay, multi-parameter synchronization difference, limited MCU calculation power, incapability of running a deep learning model, high misjudgment rate and no prediction function, secondly, a distribution line fault judgment method and system are disclosed in patent document with the application number of CN119414292A, a single parameter MCU is used for identifying faults, the faults cannot be distinguished between small current grounding and lightning stroke faults through a zero sequence current threshold value, the misjudgment rate is higher, NPU and multi-parameter processing capacity is lacked, the prediction function is not available, the adaptability is poor, thirdly, the cloud analysis is carried out by collecting data at the end side, the communication is not working when the communication is interrupted, and the end side has no NPU preprocessing capacity and the real-time performance is insufficient. The scheme can not meet the requirements of the intelligent power grid on multi-parameter fusion, real-time deduction and scene generalization due to hardware separation, data asynchronization and calculation bottleneck. Therefore, it is needed to provide a power grid line monitoring device and a monitoring method based on a sense calculation general-purpose intelligent SOC chip, and solve the technical problems of asynchronous multi-parameter data, low fault discrimination accuracy and lack of intelligent prediction capability caused by the limited calculation power of an MCU and a discrete architecture of a module of the existing power grid line monitoring device. Disclosure of Invention The invention mainly aims to provide a power grid line monitoring device and a monitoring method based on a sense calculation general-purpose intelligent SOC chip, and aims to solve the technical problems of asynchronous multi-parameter data, low fault discrimination accuracy and lack of intelligent prediction capability caused by a MCU (micro control unit) calculation limited and module discrete architecture of the existing power grid line monitoring device. The invention provides a power grid line monitoring device based on a sense-through intelligent SOC chip, which comprises an SOC chip, a power supply unit, a current sampling circuit, a voltage sampling circuit, an HRF radio frequency front end peripheral circuit, a temperature and humidity sensor and a Bluetooth communication unit, wherein the SOC chip is respectively connected with the power supply unit, the current sampling circuit, the voltage sampling circuit, the HRF radio frequency front end peripheral circuit, the temperature and humidity sensor and the Bluetooth communication unit; the power supply unit is used for taking power from the distribution line and supplying power for the device; the current sampling unit is used for converting the current of the phase line into a first voltage signal which can be identified by the SOC chip and connecting the first voltage signal into an ADC input interface of the SOC chip; the voltage sampling unit is used for converting the phase line electric field into a second voltage signal which can be identified by the SOC chip and connecting the second voltage signal into an ADC input interface of the SOC chip; the HRF radio frequency front end peripheral circuit is used for switching radio frequency transmitting/receiving modes; The temperature and humidity sensor is used for collecting the temperature and humidity of the surrounding environment of the device, converting the temperature and humidity sensor into a third voltage signal and a fourth voltage signal which can be identified by the SOC chip, and connecting the third voltage signal and the fourth voltage signal into an ADC input interface of the SOC chip. In one of the preferred schemes, a rechargeable backup power supply is arranged in the power supply module; in a normal sta