CN-122017690-A - Power transmission line inspection method, system, device and nonvolatile storage medium

CN122017690ACN 122017690 ACN122017690 ACN 122017690ACN-122017690-A

Abstract

The invention discloses a transmission line inspection method, a transmission line inspection system, a transmission line inspection device and a nonvolatile storage medium. The method comprises the steps of obtaining line parameters and historical operation data of a target power transmission line, constructing a three-dimensional model of the target power transmission line based on the line parameters, determining a routing inspection node in the target power transmission line in the three-dimensional model based on the historical operation data, scanning the target power transmission line based on the routing inspection node through an NV color center sensor, obtaining fluorescent signals corresponding to the routing inspection node, wherein the NV color center sensor comprises a plurality of NV color center sensor probes, determining magnetic field intensity corresponding to the routing inspection node based on the fluorescent signals corresponding to the routing inspection node, and determining a routing inspection result based on the magnetic field intensity corresponding to the routing inspection node. The invention solves the technical problems that the partial discharge detection is easy to be interfered by environmental noise in the current inspection of the transmission line, and the inspection result is not accurate enough only when the defect has obvious temperature rise in the overheat detection.

Inventors

LIU KEWEN
CHEN ZEXI
LI JIA
HUANG SHAN
LI ZIHAO
LI ZIJIN
ZHANG YUJIA
SONG YIFAN

Assignees

国网北京市电力公司

Dates

Publication Date: 20260512
Application Date: 20260206

Claims (11)

1. The power transmission line inspection method is characterized by comprising the following steps of: acquiring line parameters and historical operation data of a target power transmission line; constructing a three-dimensional model of the target power transmission line based on the line parameters; determining a routing inspection node in the target power transmission line in the three-dimensional model based on the historical operation data; scanning the target power transmission line based on the inspection node through an NV color center sensor to obtain a fluorescent signal corresponding to the inspection node, wherein the NV color center sensor comprises a plurality of NV color center sensor probes; determining the magnetic field intensity corresponding to the inspection node based on the fluorescent signal corresponding to the inspection node; and determining the inspection result of the target power transmission line based on the magnetic field intensity corresponding to the inspection node.
2. The method of claim 1, wherein the determining a routing node in the target transmission line from the three-dimensional model based on the historical operating data comprises: importing the historical operation data into the three-dimensional model, carrying out weight analysis on a plurality of nodes in the three-dimensional model, and determining abnormal weights corresponding to the nodes; and determining the routing inspection node based on the abnormal weights corresponding to the nodes.
3. The method of claim 1, wherein the determining the magnetic field strength corresponding to the routing node based on the fluorescent signal corresponding to the routing node comprises: determining a change data set of the fluorescent signals corresponding to the inspection nodes along with the microwave frequency; determining spin resonance frequency points of the NV color center in the NV color center sensor based on the change data set; and calculating the magnetic field intensity corresponding to the inspection node based on the spin resonance frequency point according to the Zeeman effect.
4. The method according to claim 1, wherein the determining, based on the magnetic field strength corresponding to the inspection node, the inspection result of the target power transmission line includes, in a case where the inspection node is plural: Determining the effective pulse number corresponding to each of a plurality of routing inspection nodes based on the magnetic field intensity corresponding to each of the plurality of routing inspection nodes; Determining that an inspection node with the effective pulse number exceeding a preset pulse number threshold is an abnormal inspection node, wherein the abnormal inspection node represents the inspection node with the partial discharge phenomenon; determining a magnetic field distribution diagram corresponding to the target power transmission line based on the magnetic field intensity corresponding to each of the plurality of routing inspection nodes; comparing the magnetic field distribution diagram corresponding to the target power transmission line with a preset reference magnetic field distribution diagram to determine an abnormal magnetic field region in the target power transmission line; And determining the inspection result based on the abnormal inspection node and the abnormal magnetic field area.
5. The method of claim 4, wherein determining the inspection result based on the abnormal inspection node and the abnormal magnetic field area comprises: detecting the same pulse signal based on the plurality of NV color center sensor probes, and determining the respective corresponding magnetic field vector directions of the plurality of NV color center sensor probes; Determining a discharge source based on the respective magnetic field vector directions of the plurality of NV color center sensor probes; Determining a target discharge area based on the discharge source and the abnormal inspection node; and determining the inspection result based on the target discharge region and the abnormal magnetic field region.
6. The utility model provides a transmission line inspection system which characterized in that includes: The mobile inspection module is used for moving on the target power transmission line; the positioning module is connected with the mobile inspection module and is used for recording the line parameters of the target power transmission line and constructing a three-dimensional model of the target power transmission line; The NV color center sensor module is connected with the mobile inspection module and is used for scanning the target power transmission line based on an inspection node to obtain a fluorescent signal corresponding to the inspection node, wherein the NV color center sensor comprises a plurality of NV color center sensor probes; The analysis module is connected with the mobile inspection module and the NV color center sensor module and is used for determining an inspection node in the target power transmission line in the three-dimensional model based on historical operation data, determining the magnetic field intensity corresponding to the inspection node based on a fluorescent signal corresponding to the inspection node and determining the inspection result of the target power transmission line based on the magnetic field intensity corresponding to the inspection node.
7. The system of claim 6, further comprising: And the early warning module is connected with the analysis module and is used for carrying out abnormality judgment and sending out early warning based on the inspection result.
8. The utility model provides a transmission line inspection device which characterized in that includes: The acquisition module is used for acquiring line parameters and historical operation data of the target power transmission line; The construction module is used for constructing a three-dimensional model of the target power transmission line based on the line parameters; The first determining module is used for determining a patrol node in the target power transmission line in the three-dimensional model based on the historical operation data; the scanning module is used for scanning the target power transmission line based on the inspection node through an NV color center sensor to obtain a fluorescent signal corresponding to the inspection node, wherein the NV color center sensor comprises a plurality of NV color center sensor probes; The second determining module is used for determining the magnetic field intensity corresponding to the inspection node based on the fluorescent signal corresponding to the inspection node; And the third determining module is used for determining the inspection result of the target power transmission line based on the magnetic field intensity corresponding to the inspection node.
9. A non-volatile storage medium, characterized in that the non-volatile storage medium comprises a stored program, wherein the program, when run, controls a device in which the non-volatile storage medium is located to perform the transmission line inspection method according to any one of claims 1 to 5.
10. A computer device is characterized by comprising a memory and a processor, The memory stores a computer program; the processor is configured to execute a computer program stored in the memory, where the computer program when executed causes the processor to execute the transmission line inspection method according to any one of claims 1 to 5.
11. A computer program product comprising a computer program, characterized in that the computer program, when executed by a processor, implements the transmission line inspection method according to any one of claims 1 to 5.

Description

Power transmission line inspection method, system, device and nonvolatile storage medium Technical Field The invention relates to the field of transmission line inspection in a power system, in particular to a transmission line inspection method, a transmission line inspection system, a transmission line inspection device and a nonvolatile storage medium. Background In the operation and maintenance of an electric power system, a power transmission line is used as a key channel for power transmission, and the stability and the safety of the power transmission line are important for guaranteeing the normal operation of a power grid. At present, the detection of the state of a power transmission line, particularly the detection of partial discharge and overheat, mainly depends on the traditional electromagnetic detection and thermal infrared imagers. Partial discharge detection is generally based on a change in electromagnetic field by detecting electromagnetic radiation to determine whether a partial discharge phenomenon is present, whereas overheat detection is mainly determined by measuring an increase in the surface temperature of the device. However, these conventional methods have significant limitations in practical applications: 1. Partial discharge detection is susceptible to interference of environmental noise, namely, the electromagnetic environment is complex around a power transmission line, including the influence of power equipment, weather condition change, adjacent electrical equipment and the like, and the factors can lead to false alarm or missing report of electromagnetic detection, so that the detection accuracy and reliability are reduced. 2. The overheat detection hysteresis is that when the thermal infrared imager detects that the equipment is overheated, the temperature of the equipment is often obviously increased, and the detection mode of the afterthought cannot early warn at the early stage of overheat phenomenon, so that the optimal processing time is missed, the equipment fault is possibly enlarged, and the maintenance cost and the power grid outage risk are increased. 3. The lack of high-precision positioning capability, whether partial discharge or overheat detection, is often difficult for the existing technology to accurately position the specific position where the fault occurs, and particularly in a complex power transmission network consisting of long-distance and multi-section lines, the difficulty of fault positioning is further increased. 4. The maintenance cost and the efficiency are that frequent manual inspection and equipment detection consume a great deal of manpower and material resources, and potential safety hazards can not be found in time due to limited detection range and insufficient frequency. In view of the above problems, no effective solution has been proposed at present. Disclosure of Invention The embodiment of the invention provides a power transmission line inspection method, a system, a device and a nonvolatile storage medium, which at least solve the technical problems that partial discharge detection is easy to be interfered by environmental noise in the current power transmission line inspection, and overheat detection can only be found when obvious temperature rise is generated in defects, so that inspection results are not accurate enough. According to one aspect of the embodiment of the invention, a power transmission line inspection method is provided, and comprises the steps of obtaining line parameters and historical operation data of a target power transmission line, constructing a three-dimensional model of the target power transmission line based on the line parameters, determining inspection nodes in the target power transmission line in the three-dimensional model based on the historical operation data, scanning the target power transmission line based on the inspection nodes through an NV color center sensor to obtain fluorescent signals corresponding to the inspection nodes, wherein the NV color center sensor comprises a plurality of NV color center sensor probes, determining magnetic field intensity corresponding to the inspection nodes based on the fluorescent signals corresponding to the inspection nodes, and determining inspection results of the target power transmission line based on the magnetic field intensity corresponding to the inspection nodes. Optionally, determining the routing inspection node in the target power transmission line according to the three-dimensional model based on the historical operation data comprises the steps of importing the historical operation data into the three-dimensional model, carrying out weight analysis on a plurality of nodes in the three-dimensional model, determining the abnormal weights corresponding to the nodes, and determining the routing inspection node based on the abnormal weights corresponding to the nodes. Optionally, the magnetic field intensity corresponding to the inspection n