CN112881871B - Detection method and detection system for metal particles in GIS equipment - Google Patents
Detection method and detection system for metal particles in GIS equipment Download PDFInfo
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- 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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1209—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing using acoustic measurements
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- G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
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- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
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Abstract
The invention provides a method for detecting metal particles in GIS equipment, and belongs to the technical field of electricity. The method comprises the following steps: applying a pulse high-voltage signal to an inner conductor of the GIS equipment to enable metal particles in the GIS equipment to move under the action of the pulse high-voltage signal; collecting vibration signals and ultrasonic signals from a GIS equipment shell; generating a motion trail diagram of the metal particles according to the ultrasonic signals and the vibration signals; analyzing the motion trail diagram according to a metal particle motion diagram library to obtain the form data of the metal particles; and when the form data of the metal particles exceed the hazard boundary, sending a maintenance prompt signal to a monitoring background, wherein the maintenance prompt signal is used for prompting to implement the cleaning operation of the metal particles. The embodiment of the invention also provides a detection system for the metal particles in the GIS equipment.
Description
Technical Field
The invention relates to the technical field of electrical equipment, in particular to a detection method and a detection system for metal particles in GIS equipment.
Background
Gas Insulated Switchgear (GIS) is an important device in a substation. It is characterized by that all the various electric equipments except transformer, including circuit breaker, isolating switch, fuse, voltage transformer, current transformer and grounding switch, etc. are assembled together, and filled with SF 6 A high voltage power device using gas as an insulating medium. Compared with a conventional open-type transformer substation, the GIS equipment has the remarkable advantages of small occupied area, convenience in installation, convenience in operation and reasonable planning of workers and the like, and is widely applied to a power system.
In the event of a failure of a GIS device, 50% of the failures are caused by metal particles that may enter the GIS device during production or assembly, or may be generated by machine wear during operation of the device. In GIS operation process, the metal particle can be under highly compressed effect induction charge, under the effect of outer enhancement electric field, receives the influence of electric field force and each effort, does random motion under the unbalanced condition of atress, can disturb the stable operation of GIS equipment, for example, moves to insulating less strong department when the metal particle, can arouse the electric field distortion of this department, arouses electric field breakdown, causes insulation damage. Therefore, the metal particles in the GIS device should be detected regularly to ensure the normal operation of the power system.
Disclosure of Invention
In view of this, the invention provides a method and a system for detecting metal particles in a GIS device, which can automatically detect the GIS device, analyze the form of the metal particles existing in the GIS device, determine the degree of damage of the metal particles, provide reference for maintenance personnel, reduce workload, improve maintenance work efficiency, and provide guarantee for efficient and stable operation of the GIS device.
The technical scheme adopted by the embodiment of the invention for solving the technical problem is as follows:
a method for detecting metal particles in GIS equipment comprises the following steps:
applying a pulse high-voltage signal to an inner conductor of the GIS equipment to enable metal particles in the GIS equipment to move under the action of the pulse high-voltage signal;
collecting vibration signals and ultrasonic signals from a GIS equipment shell;
generating a motion trail diagram of the metal particles according to the ultrasonic signal and the vibration signal;
analyzing the motion trail diagram according to a metal particle motion diagram library to obtain the form data of the metal particles;
and when the form data of the metal particles exceed the hazard boundary, sending a maintenance prompt signal to a monitoring background, wherein the maintenance prompt signal is used for prompting to implement the cleaning operation of the metal particles.
Preferably, before applying the pulse high voltage signal to the inner conductor of the GIS device, the method further comprises:
and creating the metal particle motion spectrum library, wherein the metal particle motion spectrum library is a set of time displacement graphs, the time displacement graphs are data reflecting the motion tracks of metal particles with preset shape data subjected to preset pulse high-voltage signals in a GIS model, and the shape data comprises metal particle shape data, metal particle size data and metal particle density data.
Preferably, the acquiring the vibration signal and the ultrasonic signal from the GIS device housing comprises:
presetting an acquisition route, wherein the acquisition route is a set of acquisition points preset on the pipe wall of the GIS equipment shell;
and acquiring the vibration signal and the ultrasonic signal on the GIS equipment shell according to the acquisition route.
Preferably, the generating a motion trace map of the metal particles according to the ultrasonic signal and the vibration signal comprises:
analyzing the three-dimensional coordinates of the positions of the metal particles at the time t according to the ultrasonic signals and the vibration signals;
calculating displacement data corresponding to the t time according to the three-dimensional coordinates;
and generating the motion trail diagram of the metal particles according to the displacement data corresponding to the t time, wherein the motion trail diagram is a graph of time and displacement.
Preferably, the analyzing the motion trail diagram according to the metal particle motion spectrum library to obtain the form data of the metal particles comprises:
comparing the motion trail graph according to the metal particle motion graph library;
finding out the time displacement graph consistent with the motion trail graph in the metal particle motion graph library;
and acquiring form data corresponding to the time displacement diagram as form data of the metal particles.
The embodiment of the invention also provides a system for detecting metal particles in GIS equipment, which comprises:
the signal output module is used for applying a pulse high-voltage signal to an inner conductor of the GIS equipment to enable metal particles in the GIS equipment to move under the action of the pulse high-voltage signal, and the signal output module is a pulse high-voltage generator;
the system comprises an acquisition module, a vibration signal acquisition module and a vibration signal acquisition module, wherein the acquisition module is used for acquiring a vibration signal and an ultrasonic signal from a GIS equipment shell and comprises an ultrasonic signal acquisition device and a vibration signal acquisition device;
the generating module is used for generating a motion trail graph of the metal particles according to the ultrasonic signals and the vibration signals;
the analysis module is used for analyzing the motion trail diagram according to the metal particle motion diagram library to obtain the form data of the metal particles;
and the signal sending module is used for sending a maintenance prompt signal to the monitoring background when the form data of the metal particles exceed the hazard boundary, and the maintenance prompt signal is used for prompting to implement automatic cleaning operation on the metal particles.
Preferably, the method further comprises the following steps:
the creating module is used for creating the metal particle motion spectrum library, the metal particle motion spectrum library is a set of time displacement graphs, the time displacement graphs represent motion track data of metal particles with preset shape data subjected to preset pulse high-voltage signals in a GIS model, and the shape data comprises metal particle shape data, metal particle size data and metal particle density data.
Preferably, the acquisition module comprises:
the device comprises a presetting unit, a processing unit and a display unit, wherein the presetting unit is used for presetting an acquisition route, and the acquisition route is a collection of acquisition points preset on the pipe wall of the GIS equipment shell;
and the acquisition unit is used for acquiring the vibration signal and the ultrasonic signal on the GIS equipment shell according to the acquisition route.
Preferably, the generating module comprises:
the analysis unit is used for analyzing the three-dimensional coordinates of the positions of the metal particles at the time t according to the ultrasonic signals and the vibration signals;
the calculation unit is used for calculating displacement data corresponding to the t time according to the three-dimensional coordinates;
and the generating unit is used for generating the motion trail graph of the metal particles according to the displacement data corresponding to the t time, wherein the motion trail graph is a graph of time and displacement.
Preferably, the analysis module comprises:
the comparison unit is used for comparing the motion trail diagram according to the metal particle motion diagram library;
the searching unit is used for searching the time displacement graph which is consistent with the motion trail graph in the metal particle motion graph library;
and an acquisition unit configured to acquire morphology data corresponding to the time displacement map as morphology data of the metal fine particles.
According to the technical scheme, the detection method and the detection system for the metal particles in the GIS equipment can be used for automatically detecting the GIS equipment, analyzing the form of the metal particles in the GIS equipment and judging the hazard degree of the metal particles, so that a reference basis is provided for maintainers, the workload is reduced, the overhauling work efficiency is improved, and the efficient and stable operation of the GIS equipment is guaranteed.
Drawings
Fig. 1 is a flowchart of a method for detecting metal particles in GIS equipment according to an embodiment of the present invention.
Fig. 2 is a schematic structural composition diagram of a detection system for metal particles in a GIS device according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a second structure of the system for detecting metal particles in a GIS device according to the embodiment of the present invention.
Fig. 4 is a schematic diagram illustrating a third structural composition of a system for detecting metal particles in a GIS device according to an embodiment of the present invention.
Fig. 5 is a schematic diagram illustrating a fourth structural configuration of a system for detecting metal particles in a GIS device according to an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a fifth structure of the detection system for metal particles in the GIS device according to the embodiment of the present invention.
Fig. 7 is a schematic structural diagram of a test platform according to an embodiment of the present invention.
Fig. 8 is a flowchart illustrating the operation of the system for detecting metal particles in a GIS device according to an embodiment of the present invention.
FIG. 9 is a time shift diagram of spherical metal particles at different pulse voltages in a library of metal particle motion profiles according to an embodiment of the present invention.
FIG. 10 is a time-shift plot of metal particles of different spherical radii from a library of metal particle motion profiles in accordance with an embodiment of the present invention.
FIG. 11 is a time shift diagram of metal particles with different spherical densities in a library of metal particle motion profiles according to an embodiment of the present invention.
FIG. 12 is a time displacement graph of metal particles with different linear lengths in a library of metal particle motion profiles according to an embodiment of the present invention.
Wherein: the device comprises a pulse high-voltage generator 1, a GIS equipment shell outer wall 2 and a data acquisition system 3 of a sensor based on ultrasonic and vibration.
Detailed Description
The technical scheme and the technical effect of the invention are further elaborated in the following by combining the drawings of the invention.
The invention is used for detecting metal particles causing GIS internal faults, wherein the metal particles generally enter GIS equipment in the production process or the assembly process and can also be generated by machine abrasion in the operation of the equipment. Therefore, the embodiment of the invention provides a method for detecting metal particles in a GIS device, which is used for analyzing parameters such as the shape, size and density of the metal particles in the GIS device and judging the degree of damage to the GIS device, and the main implementation body of the method is a system for detecting the metal particles in the GIS device. As shown in fig. 1, the method of the embodiment of the present invention may include:
step S1, applying a pulse high-voltage signal to the inner conductor of the GIS equipment to make the metal particles in the GIS equipment move under the pulse high-voltage signal, wherein the pulse high-voltage generator can send out a pulse signal to the GIS equipment;
step S2, collecting vibration signal and ultrasonic signal from GIS device shell, obtaining signal by a data collecting system based on ultrasonic and vibration sensor;
step S3, generating a motion trail diagram of the metal particles according to the ultrasonic signals and the vibration signals;
step S4, analyzing the motion trail diagram according to the metal particle motion diagram library to obtain the form data of the metal particles;
and step S5, when the form data of the metal particles exceed the damage boundary, sending a maintenance prompt signal to a monitoring background, wherein the maintenance prompt signal is used for prompting the implementation of the cleaning operation of the metal particles.
The metal particle motion spectrum library mentioned in the embodiment of the invention is a set of time displacement graphs, records the motion conditions of metal particles with different shapes, sizes and densities in GIS equipment under different pulse signals through simulation experiments, records and summarizes experimental data to form a time displacement graph, and reflects the motion trajectory data of the metal particles with preset shape data subjected to preset pulse high-voltage signals in a GIS model, wherein the mentioned shape data comprises metal particle shape data, metal particle size data and metal particle density data.
When a metal particle motion spectrum library is established, a GIS motion particle test cavity is prepared by scaling down the actual GIS equipment as a prototype in equal proportion, and a physical model established by the invention is verified and corrected through actual tests. A complete and detailed map library is obtained by modeling the GIS, adopting electric field simulation and mechanical analysis numerical simulation, and combining experimental tests to give time displacement maps of metal particles of different types and sizes under pulse voltage.
The particles have various shapes, including four types, namely spherical, flaky, linear and metal powder, and the corresponding equivalent mathematical models are four types, namely spherical, cuboid, cylinder and circle. By analyzing the stress conditions of different metal particles in the GIS, the stress conditions comprise four acting forces including electric field force, buoyancy force, gravity and viscous force, and the motion conditions of the metal particles with different voltages, densities, shapes and parameters under a certain shape are simulated by using electric field simulation and mechanical analysis numerical values.
The metal particles with different shapes, the same shape and different parameters have different motion heights under the pulse voltage, and for the metal particles with any shape, the motion heights are in direct proportion to the magnitude of the applied pulse voltage and in inverse proportion to the radius of the particles, but the motion heights of linear and flaky particles are in direct proportion to the height of the particles in addition to the above rule, namely the higher the height of the particles is. Because the metal particles have more shapes and various parameters under different shapes, the simulation graphs of numerical simulation under different densities are also various. The present invention is illustrated in the accompanying figures 9-12, which show time displacement graphs of two types of metal particles, spherical and linear, tested by numerical simulation and experimentation.
FIG. 9 is a time-displacement diagram showing the movement of spherical metal particles under different pulse voltages, taking metal aluminum with a spherical radius of 0.5mm as an example, when receiving pulse voltage signals of 126Kv, 252Kv and 550Kv from top to bottom.
FIG. 10 is a graph showing the time displacement of metal particles having different spherical radii, and shows the movement of metal aluminum having spherical radii of 0.15mm and 0.5mm when subjected to a pulse voltage signal of 126kV from top to bottom.
FIG. 11 is a time-displacement graph showing the movement of metal particles having different spherical densities, from top to bottom, when a pulse voltage signal of 126Kv is applied to metal aluminum and metal copper having a spherical radius of 0.15 mm.
FIG. 12 is a time-displacement graph showing the movement of metal particles having different linear lengths, in which a metal aluminum wire having a radius of 0.5mm and a length of 1mm and 8mm, respectively, from top to bottom, are subjected to a pulse voltage signal of 126 kV.
The specific implementation of step S2 for acquiring vibration signals and ultrasonic signals from the GIS device housing may include: presetting an acquisition route, wherein the acquisition route is a set of acquisition points preset on the pipe wall of the GIS equipment shell; and collecting the vibration signal and the ultrasonic signal on the GIS equipment shell according to the collecting route.
The signal collector comprises an ultrasonic signal sensor and a vibration sensor, and can be a robot integrating the ultrasonic signal sensor and the vibration sensor, fixed parameters are set for the robot, and the robot is made to drag the sensors to carry out detection of different areas along a set collecting route along the outer pipe wall of the GIS. Instantaneous pulse with a certain width generated when the metal particles in the GIS move and collide the bottom of the shell and the charge quantity generated when the shell vibrates and the particles move are detected, and collected ultrasonic signals and vibration signals are fed back to a processor in the system, so that specific three-dimensional coordinates of the metal particles can be obtained, a positioning function is realized, movement track data of the particles can be returned to the processor, image comparison can be conveniently carried out later, and the particle form is determined.
The specific implementation of the step S3 of generating the motion trace map of the metal particles according to the ultrasonic signal and the vibration signal may include: analyzing the three-dimensional coordinates of the positions of the metal particles at the time t according to the ultrasonic signals and the vibration signals; calculating displacement data corresponding to the t time according to the three-dimensional coordinates; and generating a motion trail diagram of the metal particles according to the displacement data corresponding to the t time, wherein the generated motion trail diagram is a graph of time and displacement.
Step S4 is to analyze the motion trace map according to the metal particle motion map library to obtain the shape data of the metal particles, which may include: comparing the motion trail diagram according to the metal particle motion diagram library; finding out a time displacement graph which is consistent with the motion trail graph in the metal particle motion graph library; form data corresponding to the time displacement diagram is acquired as form data of the metal fine particles.
And step S5, when the form data of the metal particles exceed the hazard boundary, sending a maintenance prompt signal to the monitoring background, wherein the maintenance prompt signal is used for prompting the implementation of the cleaning operation of the metal particles.
After the state value of the particles is determined, comparing the state value with the state value of the harm boundary, judging the harm degree, if the harm degree is smaller, the GIS equipment can still operate for a period of time without reason, and the stable operation of the whole transformer substation is not influenced; if the damage degree is larger and the particles are smaller, the gas insulated switchgear can be added in the GISProper voltage is applied to form an electric field, and the particles are attracted to a place with higher insulating strength by using a particle trap so as not to influence the operation of the GIS; if the damage degree is large and the particles are large, a proper maintenance time is required to be arranged, the cavity is opened, and the SF in the cavity is discharged 6 And (4) gas, and arranging a special maintenance robot for cleaning.
As shown in fig. 2 to 7, an embodiment of the present invention further provides a system for detecting metal particles in a GIS device, which is used for implementing the method shown in fig. 1, and specifically includes:
the signal output module 21 is used for applying a pulse high-voltage signal to an inner conductor of the GIS equipment to enable metal particles in the GIS equipment to move under the action of the pulse high-voltage signal, and specifically is a pulse high-voltage generator;
the acquisition module 22 is used for acquiring vibration signals and ultrasonic signals from a GIS equipment shell, comprises an ultrasonic signal collector and a vibration signal collector, and can be a data acquisition system based on ultrasonic and vibration sensors;
the generating module 23 is configured to generate a motion trace map of the metal particles according to the ultrasonic signal and the vibration signal;
the analysis module 24 is used for analyzing the motion trail diagram according to the metal particle motion diagram library to obtain the form data of the metal particles;
and the signal sending module 25 is used for sending a maintenance prompt signal to the monitoring background when the form data of the metal particles exceed the damage boundary, wherein the maintenance prompt signal is used for prompting to implement automatic cleaning operation on the metal particles.
The creating module 26 is configured to create a metal particle motion map library, where the metal particle motion map library is a set of time displacement maps, where the time displacement maps represent motion trajectory data of metal particles with preset shape data subjected to a preset pulse high-voltage signal in a GIS model, and the shape data includes metal particle shape data, metal particle size data, and metal particle density data.
The generation module 23, the analysis module 24, the signal sending module 25 and the creation module 26 are all implemented by a processor, and the processor may integrate a background expert software.
Specifically, the acquisition module 22 includes:
the presetting unit 221 is used for presetting an acquisition route, wherein the acquisition route is a collection of acquisition points preset on the pipe wall of the GIS equipment shell;
and the acquisition unit 222 is used for acquiring the vibration signal and the ultrasonic signal on the GIS equipment shell according to the acquisition route.
Specifically, the generating module 23 includes:
the analysis unit 231 is used for analyzing the three-dimensional coordinates of the positions of the metal particles at the time t according to the ultrasonic signals and the vibration signals;
a calculating unit 232, configured to calculate displacement data corresponding to the t time according to the three-dimensional coordinates;
the generating unit 233 is configured to generate a motion trace graph of the metal particles according to the displacement data corresponding to the time t, where the motion trace graph is a graph of time and displacement.
Specifically, the analysis module 24 includes:
a comparison unit 241, configured to compare the motion trajectory diagram according to the metal particle motion diagram library;
the searching unit 242 is configured to search a time displacement map in the metal particle motion map library, where the time displacement map is consistent with the motion trajectory map;
the acquiring unit 243 is configured to acquire morphology data corresponding to the time displacement map as morphology data of the metal fine particles.
The system for detecting metal particles in GIS equipment according to the embodiment of the present invention is further configured to implement the flowchart shown in fig. 7, and includes the following steps:
step S21, applying pulse signals and making a time displacement graph according to the sensing signals;
step S22, determining whether a device failure is currently caused by conductive metal particles;
step S23, if yes, comparing according to the metal particle motion atlas database;
step S24, obtaining the shape data of the metal particles according to the comparison result;
and step S25, making a maintenance scheme.
Through the process, the detection system of the metal particles in the GIS equipment can determine the form data of the foreign particles, and a basis is provided for the maintainers to make maintenance plans.
The system of the invention realizes automatic detection. In the aspect of particle detection, the data acquisition system based on the ultrasonic and vibration sensor can be sensitively positioned to the specific position and the hazard degree of foreign metal particles in the GIS, and can also realize data acquisition of particle tracks under pulse voltage. The data is collected by being dragged by a robot, no dead angle is caused to move on the outer pipe wall of the whole GIS, and then the coordinate data and the motion trail data of the particles are returned to the background expert software. On background expert software, automatically analyzing the state value of the particles, judging the hazard degree of the particles, sending a signal to remind a maintainer when necessary, and finally providing guidance for the particle trap and the maintainer to make a maintenance plan
The detection method and the detection system for the metal particles in the GIS equipment provided by the embodiment of the invention can be used for automatically detecting the GIS equipment, analyzing the form of the metal particles in the GIS equipment and judging the hazard degree of the metal particles, providing a reference basis for maintainers, reducing the workload, improving the maintenance work efficiency and providing a guarantee for the efficient and stable operation of the GIS equipment.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (6)
1. A method for detecting metal particles in GIS equipment is characterized by comprising the following steps:
applying a pulse high-voltage signal to an inner conductor of the GIS equipment to enable metal particles in the GIS equipment to move under the action of the pulse high-voltage signal;
collecting vibration signals and ultrasonic signals from a GIS equipment shell according to a preset collection route, wherein the collection route is a collection of collection points preset on the pipe wall of the GIS equipment shell;
generating a motion trail diagram of the metal particles according to the ultrasonic signals and the vibration signals;
analyzing the motion trail diagram according to a metal particle motion diagram library to obtain form data of the metal particles, wherein the form data comprises metal particle shape data, metal particle size data and metal particle density data, and the metal particle motion diagram library is a time displacement diagram set of the metal particles with preset form data; when the form data of the metal particles exceed the hazard boundary, sending a maintenance prompt signal to a monitoring background, wherein the maintenance prompt signal is used for prompting to implement cleaning operation on the metal particles;
the generating of the motion trail diagram of the metal particles according to the ultrasonic signal and the vibration signal comprises:
analyzing a three-dimensional coordinate of the position of the metal particle at the time t according to the ultrasonic signal and the vibration signal;
calculating displacement data corresponding to the t time according to the three-dimensional coordinates;
and generating the motion trail diagram of the metal particles according to the displacement data corresponding to the t time, wherein the motion trail diagram is a graph of time and displacement.
2. The method for detecting metal particles in the GIS device according to claim 1, wherein before applying the pulse high voltage signal to the inner conductor of the GIS device, the method further comprises:
and creating the metal particle motion spectrum library, wherein the metal particle motion spectrum library is a set of time displacement graphs, the time displacement graphs are data reflecting the motion tracks of metal particles with preset shape data subjected to preset pulse high-voltage signals in a GIS model, and the shape data comprises metal particle shape data, metal particle size data and metal particle density data.
3. The method according to claim 2, wherein the analyzing the motion trace map according to the metal particle motion spectrum library to obtain the morphological data of the metal particles comprises: comparing the motion trail diagram according to the metal particle motion diagram library;
finding out the time displacement graph which is consistent with the motion trail graph in the metal particle motion graph library;
and acquiring form data corresponding to the time displacement diagram as form data of the metal particles.
4. A detection system for metal particles in GIS equipment is characterized by comprising:
the signal output module is used for applying a pulse high-voltage signal to an inner conductor of the GIS equipment to enable metal particles in the GIS equipment to move under the action of the pulse high-voltage signal, and the signal output module is a pulse high-voltage generator;
the system comprises an acquisition module, a vibration detection module and a vibration detection module, wherein the acquisition module is used for acquiring vibration signals and ultrasonic signals from a GIS equipment shell according to a preset acquisition route, the acquisition module comprises an ultrasonic signal collector and a vibration signal collector, and the acquisition route is a set of acquisition points preset on the pipe wall of the GIS equipment shell;
the generating module is used for generating a motion trail graph of the metal particles according to the ultrasonic signals and the vibration signals;
the analysis module is used for analyzing the motion trail diagram according to a metal particle motion diagram library to obtain form data of the metal particles, wherein the form data comprises metal particle shape data, metal particle size data and metal particle density data, and the metal particle motion diagram library is a time displacement diagram set of the metal particles with preset form data;
the signal sending module is used for sending a maintenance prompt signal to a monitoring background when the form data of the metal particles exceed a hazard boundary, wherein the maintenance prompt signal is used for prompting the implementation of automatic cleaning operation on the metal particles;
the generation module comprises:
the analysis unit is used for analyzing the three-dimensional coordinates of the positions of the metal particles at the time t according to the ultrasonic signals and the vibration signals;
the calculation unit is used for calculating displacement data corresponding to the t time according to the three-dimensional coordinates;
and the generating unit is used for generating the motion trail graph of the metal particles according to the displacement data corresponding to the t time, wherein the motion trail graph is a graph of time and displacement.
5. The system for detecting metal particles in a GIS device of claim 4, further comprising: the creating module is used for creating the metal particle motion spectrum library, the metal particle motion spectrum library is a set of time displacement graphs, the time displacement graphs represent motion track data of metal particles with preset shape data subjected to preset pulse high-voltage signals in a GIS model, and the shape data comprises metal particle shape data, metal particle size data and metal particle density data.
6. The system for detecting metal particles in a GIS device of claim 5, wherein the analysis module comprises:
the comparison unit is used for comparing the motion trail map according to the metal particle motion map library;
the searching unit is used for searching the time displacement graph which is consistent with the motion trail graph in the metal particle motion graph library;
and an acquisition unit configured to acquire morphology data corresponding to the time displacement map as morphology data of the metal fine particles.
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| CN102539527A (en) * | 2010-12-27 | 2012-07-04 | 湖北省电力试验研究院 | GIS (gas insulated substation) partial discharge mode identification method based on ultrasonic testing |
| CN102841040A (en) * | 2012-08-23 | 2012-12-26 | 云南电力试验研究院（集团）有限公司电力研究院 | Alternate current/direct current (AC/DC) superimposed system for detecting particles in gas insulated switchgear (GIS) |
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| CN102507397B (en) * | 2011-11-22 | 2014-08-27 | 云南电力试验研究院（集团）有限公司电力研究院 | Acousto-electric jointed direct current detection method for metal electric conductive particles in GIS |
| CN102680574B (en) * | 2012-05-14 | 2014-11-26 | 云南电力试验研究院（集团）有限公司电力研究院 | GIS (Gas Insulated Switchgear) inner particle detecting method adopting polarity-reversal direct-current voltage |
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| CN109444680A (en) * | 2018-10-23 | 2019-03-08 | 国网天津市电力公司 | GIS metal particle extent of injury judgment method |
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| CN112183009B (en) * | 2020-08-28 | 2022-08-19 | 国网江苏省电力有限公司电力科学研究院 | Method and device for optimizing mounting position of direct-current GIL particle trap |
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| CN102539527A (en) * | 2010-12-27 | 2012-07-04 | 湖北省电力试验研究院 | GIS (gas insulated substation) partial discharge mode identification method based on ultrasonic testing |
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