CN102759692A - Simulation method for detecting local discharge of switch cabinet based on virtual reality technology - Google Patents
Simulation method for detecting local discharge of switch cabinet based on virtual reality technology Download PDFInfo
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- CN102759692A CN102759692A CN2012102587001A CN201210258700A CN102759692A CN 102759692 A CN102759692 A CN 102759692A CN 2012102587001 A CN2012102587001 A CN 2012102587001A CN 201210258700 A CN201210258700 A CN 201210258700A CN 102759692 A CN102759692 A CN 102759692A
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Abstract
The invention provides a simulation method for detecting local discharge of a switch cabinet based on a virtual reality technology. The method comprises the following steps of: detecting typical data which is actually measured by positioning to establish a local discharge module according to the local discharge of the switch cabinet; by taking a local discharge detecting instrument as a prototype, establishing a detecting instrument module for detecting the switch cabinet by virtue of the virtual reality technology; invoking the local discharge module and the detecting instrument module to perform simulation detection of local discharge detection so as to acquire simulation detection data; and monitoring operating conditions of the switch cabinet by virtue of the simulation detection data. According to the technology, the detection simulation of the local discharge of the switch cabinet is finished through a computer, and physical equipment is not required, so that the simulation cost is low, the interference is small, the safety is good, the efficiency is high, and thus the simulation method has an extremely high promotion value.
Description
Technical field
The present invention relates to the electric system simulation technology, particularly relate to a kind of switch cubicle Partial Discharge Detection emulation mode and system based on virtual reality technology.
Background technology
Switch cubicle is the key equipment of electric system, the reliable power supply of large-scale customer substation.Statistics shows that the switch cubicle accident that causes because of the shelf depreciation defective has accounted for quite big ratio.Therefore, it is extremely important carrying out the switch cubicle partial discharge monitoring in electric system, large-scale user (like high ferro, subway, airport etc.) transformer station, because switch cubicle equipment etc. are after the process operation of certain hour; Like reasons such as device aging, damages, its more operating parameters can change, and have potential faults; Shelf depreciation through to switch cubicle is carried out detection simulation; Can obtain the monitoring of its operating condition, can carry out failure prediction, avoid the generation of accident switch cubicle.
At present; Switch cubicle Partial Discharge Detection emulation technology commonly used; The simulated environment that generally is based on physical equipment and sets up though these technology can reach simulated effect true to nature, needs great cost owing to be equipped with various physical equipments; And needs problem charged, that under high voltage condition, test in the physical equipment emulation; Disturb big, poor stability, efficient low, make it be difficult to become the ubiquity emulation technology and in the application of current power system, promote and come, can't satisfy the electrical network business demand of current continuous development.
Summary of the invention
Based on this, be necessary to high based on the switch cubicle Partial Discharge Detection emulation technology cost of physics, disturb big, poor stability, inefficient problem, a kind of switch cubicle Partial Discharge Detection emulation mode based on virtual reality technology is provided.
A kind of switch cubicle Partial Discharge Detection emulation mode based on virtual reality technology comprises the steps:
Typical data according to survey the Partial Discharge Detection location of switch cubicle is set up the shelf depreciation model;
With Partial discharge detector's device is prototype, utilizes virtual reality technology to set up the detecting instrument model that is used to detect said switch cubicle;
Call said shelf depreciation model and said detecting instrument model and carry out Partial Discharge Detection emulation detection, obtain emulation and detect data;
Utilizing said emulation to detect data monitors the operating condition of said switch cubicle.
Above-mentioned switch cubicle Partial Discharge Detection emulation mode based on virtual reality technology; Virtual reality technology is combined with the switch cubicle Partial Discharge Detection; Difference virtual switch cabinet shelf depreciation model, testing tool model, the Partial Discharge Detection emulation of switch cubicle is accomplished through computing machine, need not to be equipped with physical equipment; The emulation cost is low, interference is little, security good, efficient is high, has high promotional value.
Description of drawings
Fig. 1 is the switch cubicle Partial Discharge Detection emulation mode process flow diagram based on virtual reality technology of an embodiment.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the switch cubicle Partial Discharge Detection emulation mode based on virtual reality technology of the present invention is described in detail.
Fig. 1 shows the switch cubicle Partial Discharge Detection emulation mode process flow diagram based on virtual reality technology of an embodiment, mainly comprises the steps:
Step 1: the typical data according to survey the Partial Discharge Detection location of switch cubicle is set up the shelf depreciation model;
In one embodiment, be directed to electromagnetic radiation and aerial propagation characteristic thereof that the switch cubicle shelf depreciation produces, the shelf depreciation model of virtual switch cabinet mainly comprises the steps:
S101 reads in the typical data of switch cubicle Partial Discharge Detection detection and localization, and sets up the electromagnetic radiation model according to said typical data; Wherein, said electromagnetic radiation model comprises the electromagnetic radiation of shelf depreciation point and the corresponding relation of distance;
As shown in table 1; Table 1 is the measured data that obtains in the 10kV switch cubicle Partial Discharge Detection positioning experiment; The electromagnetic radiation intensity and the propagation characteristic thereof that have produced when having described typical switch cubicle shelf depreciation; These data are carried out Computer Simulation, obtain electromagnetic radiation model as 10kV switch cubicle shelf depreciation model.
Table 1:
| Distance (cm) | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | 60 |
| Field intensity (V/m) | 2.63 | 2.1 | 1.69 | 1.44 | 1.22 | 1.09 | 0.97 | 0.88 | 6×10 -8 |
S102, the fitting formula that electromagnetic radiation intensity distributes in the space that to calculate with said shelf depreciation point be the center;
Preferably, after the electromagnetic radiation model is set up in emulation, utilize differential technique that measured data is handled, simulating with the shelf depreciation point is in the space at center, and the fitting formula between electromagnetic radiation intensity distribution and the distance is specific as follows:
At first, the typical data of definition measured data;
For example, the typical data of the measured data of 10kV switch cubicle Partial Discharge Detection location is expressed as measured data " distance; field strength " node, and is kept in the linear array in the definition list 1, and first value of array is for [15; 2.63], last is [60,6 * 10
-8].
Then, the node in the linear array being carried out linear interpolation calculates;
For example, can obtain 9 nodes according to the measured data in the table 1, according to the interpolation quantity of setting, the distance between per two nodes is carried out interpolation calculation, and then can obtain more " distance " point pairing " electromagnetic radiation intensity ".
Preferably; Consider in the electromagnetic radiation intensity distribution of shelf depreciation point; From shelf depreciation point when far away or nearer electromagnetic radiation intensity change little characteristic, main electromagnetic radiation intensity to local point of discharge is with carrying out interpolation calculation in the bigger distance range of variable in distance.
Particularly, carry out interpolation calculation, comprise following process for obtain linear array by table 1:
If D
iBe less than or equal to 15cm, then think this point infinitely near point of discharge, its radiation intensity V
iGet first radiation intensity, promptly get V
i=2.63;
If D
iMore than or equal to 60cm, think that then this point is far away apart from point of discharge, its radiation intensity V
iGet the radiation intensity of last point, promptly get V
i=6 * 10
-8
If D
iBetween 15cm ~ 60cm, then adopt linear interpolation method to calculate its electromagnetic radiation intensity, establish D
iGreater than D
jFormula is less than D
J+1, radiation intensity V then
iComputing formula following:
In the formula, D
jAnd D
J+1Be 2 adjacent in linear array points, V
jAnd V
J+1It is the electromagnetic radiation intensity of these 2 correspondences.
Need to prove D
iBe meant that check point leaves the space length of shelf depreciation point, its computation process can be calculated through space coordinates.
Set a trap the volume coordinate position of portion's point of discharge for (X
0, Y
0, Z
0), the coordinate of certain check point is (X in the space
i, Y
i, Z
i), the space length D of this check point and shelf depreciation point then
iFor:
At last, calculate based on linear interpolation, simulating with the shelf depreciation point is in the space at center, the fitting of distribution formula between electromagnetic radiation intensity distribution and the distance;
Particularly; Through after the interpolation calculation, can obtain the array of a plurality of " distance " point and " electromagnetic radiation intensity ", nodes all in the array is carried out match; Can obtain about " distance " matched curve with " electromagnetic radiation intensity "; According to this matched curve, can calculate with the shelf depreciation point is in the space at center, the fitting formula between electromagnetic radiation intensity distribution and the distance.
S103 sets up the electromagnetic radiation intensity test procedure according to said fitting formula; Particularly, utilize this electromagnetic radiation intensity test procedure, can be used for carrying out emulation testing.
Step 2: the instrument models of setting up testing tool according to the performance parameter of the testing tool that uses in the said switch cubicle Partial Discharge Detection positioning experiment.
In one embodiment; Adopt virtual reality technology, be prototype, fictionalize its external structure on computers with the testing tool that uses in the switch cubicle Partial Discharge Detection location; And its each position component is set, and have and actual testing tool identical functions.
Be the process that example is set forth the virtual instrument model with PDM03 Partial discharge detector device below, its virtual process mainly comprises the steps:
S201 is according to the three-dimensional case of the structure virtual instrument of Partial discharge detector's device; The simulation component of virtual instrument on said three-dimensional case; Wherein, said simulation component comprises three-dimensional button, three-dimensional display screen; In addition, can also comprise first-class other parts of connection.
Particularly, adopt the 3DMAX business software to set up the detecting instrument three-dimensional case according to the proportionate relationship of the length of PDM03 instrument.
According to the length and width ratio of display screen and the position on instrument, obedient dark base map on the three-dimensional case of detecting instrument.
Make three-dimensional button, three-dimensional display screen according to the key arrangement order in the detecting instrument front; In addition, make three-dimensional first-class other three-dimensional part that connects according to putting in order of connector at the instrument side.
S202 sets up a plane coordinate system, and the circumscribed rectangular region of in this coordinate system, setting said simulation component is the reach of mouse event; Set up linking between said simulation component and the computer program according to said reach.
In this step, mainly be to call in the tool housing that 3DMAX makes, the reach of control on the definition instrument, and set function corresponding.
Particularly, be initial point with the lower left corner of instrument front rectangle, set up plane coordinate system, in this coordinate system, be defined as each button, rectangle of display screen definition goes to be used to respond mouse event as reach; The lower left corner with instrument side rectangle is initial point, sets up plane coordinate system, in this coordinate system, is used to respond mouse event for border circular areas of each connector definition as reach; Behind the control of definition on the instrument, according to response mouse event definition push key, display screen with the computer program of setting between link;
For example, set up linking between three-dimensional button and the said electromagnetic radiation intensity test procedure; Set up linking between three-dimensional display screen and the electromagnetic radiation intensity display routine.
Through aforesaid operations, the reach of button, display screen and other parts on the realization testing tool panel is related with instrument, thereby can correctly realize button, display screen and the location of other parts in three-dimensional virtual environment.
Step 3: call said shelf depreciation model and said detecting instrument model and carry out Partial Discharge Detection emulation detection, obtain emulation and detect data;
In one embodiment, mainly be according to actual switch cabinet Partial Discharge Detection positioning experiment field condition, fictionalize real experiment scene, comprise the steps:
S301; One group of three-dimensional switch cubicle that comprises shelf depreciation point is set in a virtual switch cubicle place; Wherein, This virtual place is a virtual place that is isolated by the rectangle fence, is virtual objects with the experiment scene of reality, and the shelf depreciation point of said three-dimensional switch cubicle is corresponding with the shelf depreciation point of said shelf depreciation model;
S302 is provided with test point on said three-dimensional switch cubicle;
For example, one group of totally 8 10kV virtual switch cabinet can be in the place, put, a shelf depreciation point can be in one side 10kV virtual switch cabinet, generated at random; In order to show this shelf depreciation point more realistically, can put spatial emission electromagnetic radiation as waves towards periphery according to electromagnetic radiation and this shelf depreciation of propagation characteristic model virtual; Then said instrument models is placed in the said virtual place; For example, put virtual PDM03 Partial discharge detector device in the central authorities in place.
Simultaneously, all right virtual experimental utility appliance; Wherein, the experiment utility appliance mainly is meant and is used for auxiliary some peripherals of accomplishing experiment of Partial discharge detector's device; For example, the experiment utility appliance of PDM03 Partial discharge detector device mainly comprises detector, retractable aerial and connecting line etc.
Need to prove, above-mentioned instrument models and utility appliance thereof, virtual place, the virtual switch cabinet all appears with the three-dimensional picture mode.
Further, can also the virtual test personnel in said virtual experimental scene, carry out switch cubicle Partial Discharge Detection process; Through the tester being used for example entering apparatus such as mouse, the switch cubicle Partial Discharge Detection positioning action that in experiment scene, carries out responds, to simulate the process that a laboratory technician utilizes monitoring instrument that the switch cabinet equipment is checked and operated.For example, simulate a laboratory technician and in the virtual experimental scene, roam, simulated experiment person's visual angle is checked equipment and is operated.
Further; For virtual PDM03 Partial discharge detector device; The tester is with the joint of click connecting line, and then clicks the connector of virtual PDM03 Partial discharge detector device, and connecting line is connected with the connector of virtual PDM03 Partial discharge detector device.
Through aforesaid operations, can simulate the process that PDM03 Partial discharge detector device and experiment utility appliance thereof connect.
Further, the instruction of response test personnel exploration operation, simulation utilizes said experiment utility appliance that said virtual switch cabinet is carried out testing process.For example; Detector, retractable aerial with the click connecting line; Virtual experimental person's hand is taken retractable aerial, goes to the position that need put, clicks the mouse and puts click place to retractable aerial; The virtual test personnel hand is taken detector, is placed into the check point of 10kV virtual switch cabinet, clicks the mouse and fixes.
Through aforesaid operations, the process of can simulated experiment person's hand taking detector that 10kV virtual switch cabinet is detected.
Further, response test personnel instrumentation operational order, the said instrument models of simulated operation is checked and position fixing process the shelf depreciation point of said virtual switch cabinet.At first; The virtual test personnel click the wiring check button, and the simulation test personnel press this button, accomplish the correctness of butted line and check; Press test beginning button then, carry out the shelf depreciation point of 10kV virtual switch cabinet is checked the operating process with positioning experiment.Simulated experiment person uses PDM03 Partial discharge detector device to check and location process.
Aforesaid operations is the virtual reality technology of characteristic through adopting with the feeling of immersion of height and good interactivity, obtains manual simulation's environment true to nature, and the behavior of anthropomorphic dummy's various sensory perceptual systems in experimental situation has greatly improved the fidelity of emulation effectively.
S303, the response user clicks the mouse response instruction of said three-dimensional button, calls the electromagnetic radiation intensity that said electromagnetic radiation intensity test procedure calculates said test point;
As an embodiment, computation process comprises:
At first calculate the distance between the shelf depreciation point of said test point and said three-dimensional switch cubicle;
For example, according to formula (2), the test point in the 10kV virtual switch cabinet of can calculating detector surveying is from the distance B of the shelf depreciation point that sets
i
Then with the said electromagnetic radiation intensity that calculates said test point apart from the fitting formula in the said electromagnetic radiation intensity test procedure of substitution.
For example, with D
iBe updated to the fitting of distribution formula between electromagnetic radiation intensity distribution and the distance, can calculate this distance and obtain corresponding electromagnetic radiation intensity V
i
S304 calls said electromagnetic radiation intensity display routine, said electromagnetic radiation intensity is presented in the zone of said three-dimensional display screen;
Particularly, the electromagnetic radiation intensity display routine is the viewing area according to the coordinate range of the display screen of confirming with this coordinate range; Can the electromagnetic radiation intensity that calculate be pressed the passage order according to the passage of PDM03 Partial discharge detector device, show at the screen position place of virtual PDM03 Partial discharge detector device according to each detector access.
Step 4: utilize said emulation to detect data the operating condition of said switch cubicle is monitored;
In one embodiment, detect the parameter error of the said switch cubicle of data computation according to said emulation; According to said parameter error the running parameter of said switch cubicle is adjusted;
Detect data through emulation; Can obtain its parameter changing condition, for example, can emulation its operate in the working condition under some defect condition; Thereby can carry out the failure prediction under the special defective; The adjustment of carrying out running parameter for switch cubicle provides important references, avoid accident to take place, and these is difficult to realize at real physical equipment.
In sum; Switch cubicle Partial Discharge Detection emulation mode based on virtual reality technology of the present invention can be truly, the simulation process of virtual switch cabinet Partial Discharge Detection realistically; Realize based on computer software; Avoided in the physical equipment emulation needing problem charged, that under high voltage condition, test, disturbs little, security good, efficient is high, predicting for the partial discharges fault of switch cubicle provides the important method support; In addition; Can also be applied in the normalized operation of electric system; Particularly better beneficial effect can be brought, for example in switch cubicle Partial Discharge Detection l-G simulation test safety training education aspect; Adopt this method to help especially to realize the telecommunication network training, thereby realize disperseing training, concentrated examination.It is an effective ingredient of power system operation emulation.
The above embodiment has only expressed several kinds of embodiments of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the present invention's design, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with accompanying claims.
Claims (7)
1. the switch cubicle Partial Discharge Detection emulation mode based on virtual reality technology is characterized in that, may further comprise the steps:
Typical data according to survey the Partial Discharge Detection location of switch cubicle is set up the shelf depreciation model;
With Partial discharge detector's device is prototype, utilizes virtual reality technology to set up the detecting instrument model that is used to detect said switch cubicle;
Call said shelf depreciation model and said detecting instrument model and carry out Partial Discharge Detection emulation detection, obtain emulation and detect data;
Utilizing said emulation to detect data monitors the operating condition of said switch cubicle.
2. the switch cubicle Partial Discharge Detection emulation mode based on virtual reality technology according to claim 1 is characterized in that, said typical data of surveying according to the Partial Discharge Detection location of switch cubicle is set up shelf depreciation model step and specifically comprised:
Read in the typical data of switch cubicle Partial Discharge Detection detection and localization, and set up the electromagnetic radiation model according to said typical data; Wherein, said electromagnetic radiation model comprises the electromagnetic radiation of shelf depreciation point and the corresponding relation of distance;
The fitting formula that calculating distributes with electromagnetic radiation intensity in the said shelf depreciation point space that is the center;
Set up the electromagnetic radiation intensity test procedure according to said fitting formula.
3. the switch cubicle Partial Discharge Detection emulation mode based on virtual reality technology according to claim 1 and 2; It is characterized in that; Said is prototype with Partial discharge detector's device, utilizes virtual reality technology to set up to be used to the detecting instrument model step that detects said switch cubicle specifically to comprise:
Three-dimensional case according to the structure virtual instrument of Partial discharge detector's device;
The simulation component of virtual instrument on said three-dimensional case; Wherein, said simulation component comprises three-dimensional button, three-dimensional display screen;
Set up a plane coordinate system, the circumscribed rectangular region of in this coordinate system, setting said simulation component is the reach of mouse event;
Set up linking between the computer program of said simulation component and setting according to said reach.
4. the switch cubicle Partial Discharge Detection emulation mode based on virtual reality technology according to claim 3 is characterized in that, saidly sets up said simulation component according to said reach and specifically comprises with the step that links between the computer program:
Set up linking between three-dimensional button and the said electromagnetic radiation intensity test procedure;
Set up linking between three-dimensional display screen and the electromagnetic radiation intensity display routine.
5. the switch cubicle Partial Discharge Detection emulation mode based on virtual reality technology according to claim 4; It is characterized in that; Said said shelf depreciation model and the said detecting instrument model of calling carries out Partial Discharge Detection emulation and detects, and obtains emulation and detects data step and comprise:
One group of three-dimensional switch cubicle that comprises shelf depreciation point is set in a virtual switch cubicle place, and wherein, the shelf depreciation point of said three-dimensional switch cubicle is corresponding with the shelf depreciation point of said shelf depreciation model;
On said three-dimensional switch cubicle, test point is set;
The response user clicks the mouse response instruction of said three-dimensional button, calls the electromagnetic radiation intensity that said electromagnetic radiation intensity test procedure calculates said test point;
Call said electromagnetic radiation intensity display routine, said electromagnetic radiation intensity is presented in the zone of said three-dimensional display screen.
6. the switch cubicle Partial Discharge Detection emulation mode based on virtual reality technology according to claim 5 is characterized in that the electromagnetic radiation intensity step of the said test point of said calculating comprises:
Calculate the distance between the shelf depreciation point of said test point and said three-dimensional switch cubicle;
With the said electromagnetic radiation intensity that calculates said test point apart from the fitting formula in the said electromagnetic radiation intensity test procedure of substitution.
7. the switch cubicle Partial Discharge Detection emulation mode based on virtual reality technology according to claim 1 is characterized in that, saidly utilizes said emulation to detect data the operating condition of said switch cubicle is carried out monitoring step to comprise:
Detect the parameter error of the said switch cubicle of data computation according to said emulation; According to said parameter error the running parameter of said switch cubicle is adjusted.
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| CN103353847A (en) * | 2012-12-24 | 2013-10-16 | 国家电网公司 | Simulation device for electrical equipment discharge detection based on virtual realization and realization method thereof |
| CN103675517A (en) * | 2013-09-29 | 2014-03-26 | 广州供电局有限公司 | Trace-moisture live visual simulation test method for SF6 gas high-tension equipment |
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| CN104751714A (en) * | 2014-11-18 | 2015-07-01 | 国网电力科学研究院武汉南瑞有限责任公司 | Three-dimensional simulation training system for partial discharge troubles of coil equipment |
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| CN108414900A (en) * | 2018-03-08 | 2018-08-17 | 云南电网有限责任公司电力科学研究院 | A kind of method and system of detection partial discharge of transformer |
| CN110398673A (en) * | 2019-08-02 | 2019-11-01 | 南京工业大学 | A kind of virtual emulation platform for high voltage gas discharge manifold effect comprehensive diagnos |
| CN111025099A (en) * | 2019-12-05 | 2020-04-17 | 国网宁夏电力有限公司电力科学研究院 | Simulation model and method for partial discharge detection |
| CN111025099B (en) * | 2019-12-05 | 2022-03-22 | 国网宁夏电力有限公司电力科学研究院 | Simulation model and method for partial discharge detection |
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