CN111047953A - Virtual experiment system for simulating breakdown voltage of uniform electric field - Google Patents
Virtual experiment system for simulating breakdown voltage of uniform electric field Download PDFInfo
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Abstract
The invention discloses a virtual experiment system for simulating breakdown voltage of a uniform electric field, which comprises a virtual voltage regulator, a virtual electric field module and a breakdown process showing module, wherein the virtual voltage regulator is connected with the virtual electric field module; the virtual voltage regulator is used for simulating high voltage required by a uniform electric field breakdown experiment, the virtual electric field module is used for displaying the change condition of a uniform electric field along with the rise of the voltage, and the breakdown process display module is used for realizing electric field breakdown display and high voltage cutting protection functions; the virtual electric field module comprises two conductive panels and a field intensity display module; the field intensity display module comprises an electric field line display module and a sound display module; the virtual voltage regulator inputs voltage to two ends of the two conductive panels, and the two conductive panels are placed in parallel. The invention does not need to invest physical high pressure and matched equipment, and has economical efficiency; the safety of experiment can be ensured; the remote experiment can be realized, and the limitation of an experiment place is eliminated; the flexibility is good, and the experimental mode is nimble, avoids limitations such as the voltage class of physical equipment and insulating requirement.
Description
Technical Field
The invention belongs to the field of power system automation, and particularly relates to a virtual experiment system for simulating breakdown voltage of a uniform electric field.
Background
As one of the important experiments of the current high voltage, the uniform electric field breakdown voltage experiment has been widely performed in engineering tests, training and education.
The most of the researches directly start from the scenes of high-voltage experiments, mainly virtualize each equipment module, show the experimental process by using an animation scene, and do not further virtually simulate the relationship between breakdown voltage and gap distance in the experimental process.
Based on the breakdown voltage experiment of actual high-voltage equipment, need be equipped with booster unit and be equipped with safety measure etc. this involves a large amount of special electric power high voltage and auxiliary assembly, and the cost demand is big. Therefore, the virtual experiment system capable of visually showing the breakdown voltage of the uniform electric field is constructed based on the principle of the breakdown voltage of the uniform electric field. Particularly, in the fields sensitive to cost, such as engineering tests, training and education, the virtual experiment system for the breakdown voltage of the virtual uniform electric field is high in efficiency, flexible and low in cost, and has important significance.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides a virtual experiment system for simulating the breakdown voltage of a uniform electric field. The system can ensure the correctness and stability of the experiment, and can also ensure the safety of the experiment and reduce the cost.
A virtual experiment system for simulating breakdown voltage of a uniform electric field comprises a virtual voltage regulator, a virtual electric field module and a breakdown process showing module, wherein the virtual voltage regulator, the virtual electric field module and the breakdown process showing module are sequentially connected; the virtual voltage regulator is used for simulating high voltage required by a uniform electric field breakdown experiment, the virtual electric field module is used for displaying the change condition of a uniform electric field along with the rise of the voltage, and the breakdown process display module is used for realizing electric field breakdown display and high voltage cutting protection functions;
the virtual voltage regulator visually displays the virtual voltage output by the voltage regulator through the output virtual voltage display module;
the virtual electric field module comprises two conductive panels and a field intensity display module; the field intensity display module comprises an electric field line display module and a sound display module;
the virtual voltage regulator inputs virtual voltage to two ends of the two conductive panels, the two conductive panels are placed in parallel, the distance between the two conductive panels represents the uniform electric field breakdown distance, and the distance is adjusted through the adjusting module.
Further, the output virtual voltage display module visually displays the output virtual voltage of the voltage regulator of the current virtual experiment system in the form of a voltmeter.
Further, the adjusting module is used for adjusting the distance between the two conductive panels by inputting a required distance adjusting value through a keyboard.
Further, the virtual voltage regulator is divided into a manual virtual voltage regulator and an automatic virtual voltage regulator.
Furthermore, the manual virtual voltage regulator is used for changing virtual voltage by experimenters through a keyboard or a mouse, the operating voltage of an UP key of the keyboard is increased, the operating voltage of a DOWN key of the keyboard is reduced, or the mouse is directly pulled to realize the increase and the reduction of the voltage, and the output virtual voltage of the virtual voltage regulator changes correspondingly when the keyboard or the mouse is operated once each time; the voltage output initial value of the manual virtual voltage regulator is defaulted to 0, the voltage value increased and decreased in each operation is defaulted to 1kV, and the voltage output initial value and the default value of the voltage value increased and decreased in each operation are flexibly set in a virtual experiment system according to experiment requirements.
Further, the automatic virtual voltage regulator is used for setting a voltage output initial value and a default value of a voltage value increased or decreased in each operation in a virtual experiment system by an experimenter according to experiment requirements, if the experimenter does not set the voltage output initial value in advance, the virtual experiment system defaults the automatically set voltage output initial value to 0, and the voltage value increased or decreased in each operation is defaulted to 1 kV; in the automatic virtual voltage regulator mode, the virtual experiment system outputs an initial value V according to the voltage0And increasing or decreasing the voltage value d per operation, based on the formula Vt-V0+ dt, the regulator output virtual voltage is automatically generated. Vt is the virtual voltage value output by the regulator, and dt is the increasing and decreasing voltage value.
Furthermore, the electric field line display module represents the voltage by the density of the virtual electric field lines, the virtual electric field lines are represented by a one-way arrow pointing from the positive conductive panel to the ground conductive panel, and the change of the number of the virtual electric field lines is expressed by the following formula:
amount＝input voltage*coefficient+base，input voltage
the electric field line display module comprises an electric field line display module, an input voltage, a coefficient, an increment coefficient and a base, wherein the ampount is an electric field line display module, the input voltage is a current virtual voltage value, the coefficient is a constant-increment coefficient set when a virtual experiment system is initialized, the base is an initial value of the number of the virtual electric field lines set when the virtual experiment system is initialized, the increment coefficient and the initial value are arbitrary values, and the number of the virtual electric field lines is increased and is denser along with the increase of the virtual voltage value. Furthermore, the sound display module expresses the voltage by using the strength of sound, and the strength change of sound is expressed by the formula:
volume＝input voltage*coefficient+base
the volume is a sound display module, the input voltage is a current virtual voltage value, the coefficient is a constant-increasing coefficient set when a virtual experiment system is initialized, the base is an initial value of sound intensity set when the virtual experiment system is initialized, the increasing coefficient and the initial value are any appropriate values, and the sound output by the computer equipment becomes stronger as the virtual voltage value increases. Further, the breakdown process showing module for realizing the electric field breakdown showing and high voltage cutting protection functions comprises the following steps:
1) automatically converting the breakdown voltage experimental value into a breakdown voltage value under a standard condition, wherein a humidity correction index is w to be 0, an air density correction index is m to be n to be 1, and an air density correction coefficient is as follows:
air density correction factor Kh1 is ═ 1; average breakdown field strength Em＝U0D (kV/cm); breakdown voltage value U under standard condition0(kV) is the external insulation discharge voltage U in the standard atmospheric state0＝Ub/Kd(kV); atmospheric pressure P in standard atmospheric state00.1013 MPa; temperature t020 ℃ is set; absolute humidity h is 11g/m3，UbThe breakdown voltage value under the current environment is shown, and d represents the distance between the current-conducting plates; kdRepresenting an air density correction coefficient, P representing the current ambient atmospheric pressure, and t representing the current ambient temperature;
2) in the virtual experiment of the breakdown voltage of the uniform electric field, the formula of the breakdown voltage value is as follows:
wherein d represents the distance between the conductive plates in cm; δ represents the relative density of air;
when the value of the virtual voltage reaches the breakdown voltage value, the virtual experiment system pops up a red warning window to display the breakdown voltage under the current experiment parameters and prompt that the electric field is broken down, and a buzzer connected with the system can continuously make a sound to remind an experimenter, and meanwhile, the virtual voltage value is set to be zero to terminate the virtual experiment of the breakdown voltage of the uniform electric field.
The invention is used for getting rid of the constraint of the breakdown voltage experiment of the actual high-voltage equipment on the equipment requirement, replaces the realized high voltage by a virtual simulation mode and has safety.
Compared with the prior art, the invention has the following beneficial effects:
1) based on the principle of uniform electric field breakdown voltage, the constructed virtual experiment system can visually display the uniform electric field breakdown voltage;
2) the system can construct a virtual experiment system of the virtual uniform electric field breakdown voltage with high efficiency, flexibility and low cost in the fields sensitive to cost, such as engineering tests, training, education and the like.
Drawings
FIG. 1 is a schematic diagram of a virtual system for simulating breakdown voltage of uniform electric field according to an embodiment of the present invention;
fig. 2 is a schematic connection diagram of a virtual system for simulating breakdown voltage of uniform electric field according to the present embodiment.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
The virtual system for simulating the breakdown voltage of the uniform electric field as shown in fig. 1 comprises a virtual voltage regulator, a virtual electric field module and a breakdown process showing module, wherein the virtual voltage regulator, the virtual electric field module and the breakdown process showing module are sequentially connected; the virtual voltage regulator is used for simulating high voltage required by a uniform electric field breakdown experiment, the virtual electric field module is used for displaying the change condition of a uniform electric field along with the rise of the voltage, and the breakdown process display module is used for realizing electric field breakdown display and high voltage cutting protection functions.
The virtual voltage regulator visually displays the virtual voltage output by the voltage regulator through the output virtual voltage display module; the output virtual voltage display module is used for visually displaying the output virtual voltage of the voltage regulator of the current virtual experiment system in the form of a voltmeter.
The virtual electric field module comprises two conductive panels and a field intensity display module; the field intensity display module comprises an electric field line display module and a sound display module;
as shown in fig. 2, the virtual voltage regulator inputs a virtual voltage to two ends of two conductive panels, the two conductive panels are placed in parallel, the distance between the two conductive panels represents a uniform electric field breakdown distance, and the distance is adjusted by the adjustment module;
the adjusting module is used for adjusting the distance between the two conductive panels by inputting the required distance adjusting value through a keyboard.
The virtual voltage regulator is used for simulating high voltage required by a uniform electric field breakdown experiment and is divided into a manual virtual voltage regulator and an automatic virtual voltage regulator;
1) in the manual virtual voltage regulator mode, an experimenter directly operates the virtual voltage regulator to output the change of the virtual voltage through keyboard or mouse control. The UP key operation voltage of the keyboard rises and the DOWN key operation voltage of the keyboard falls. The mouse can be directly pulled in the virtual experiment system to realize the voltage increase and decrease. The output virtual voltage of the virtual voltage regulator changes correspondingly every time the keyboard or the mouse is operated. The initial voltage output value of the manual virtual voltage regulator is default to 0, the voltage value increased and decreased in each operation is default to 1kV, and the initial voltage output value and the default value of the voltage value increased and decreased in each operation can be flexibly set in a virtual experiment system according to experiment needs. The virtual experiment system for the breakdown voltage of the virtual uniform electric field adjusts the output virtual voltage of the virtual voltage regulator according to a voltage output initial value set before the experiment begins and a default value of a voltage value increased or decreased in each operation.
2) In the automatic virtual voltage regulator mode, an experimenter flexibly sets a voltage output initial value and a default value of increasing and decreasing the voltage value in each operation in a virtual experiment system according to experiment requirements. If the experimenter does not set the voltage value, the virtual experiment system defaults the automatic setting voltage output initial value to 0, and the voltage value increased and decreased in each operation is defaulted to 1 kV. In the auto-virtual regulator system, a virtual experiment system increases or decreases a voltage value d according to a voltage output initial value V0 and each operation, based on a formula Vt-V0+ dt, automatic generation of voltage regulationThe device outputs a virtual voltage.
The virtual voltage regulator can be manually operated by a mouse to input operation increasing voltage, initial voltage and step length d can also be set, and instantaneous output voltage can be obtained and displayed through the virtual voltage display module.
The virtual electric field module is used for visually displaying the change condition of the uniform electric field along with the rise of the voltage.
The virtual voltage regulator directly inputs the output virtual voltage to two ends of the two conductive panels, the two conductive panels are placed in parallel, and the distance between the two conductive panels represents the uniform electric field breakdown distance. The adjusting module specially set for the distance in the virtual experiment system can input the required distance adjusting value through a keyboard by double clicking the adjusting module, and the default unit of the value is centimeter. The virtual experiment system automatically adjusts the distance between the two conductive panels in the virtual experiment system according to the input breakdown distance value.
The electric field line display module expresses the voltage by the density of virtual electric field lines, the virtual electric field lines are expressed by a one-way arrow pointing to the grounding end conductive panel from the positive end conductive panel, and the quantity change of the virtual electric field lines is expressed by the following formula:
amount＝input voltage*coefficient+base，input voltage
the electric field line display module comprises an electric field line display module, an input voltage, a coefficient, an increment coefficient and a base, wherein the ampount is an electric field line display module, the input voltage is a current virtual voltage value, the coefficient is a constant-increment coefficient set when a virtual experiment system is initialized, the base is an initial value of the number of the virtual electric field lines set when the virtual experiment system is initialized, the increment coefficient and the initial value are arbitrary values, and the number of the virtual electric field lines is increased and is denser along with the increase of the virtual voltage value.
The sound display module expresses the voltage by using the strength of sound, and the strength change of the sound is expressed by the formula:
volume＝input voltage*coefficient+base
the volume is a sound display module, the input voltage is a current virtual voltage value, the coefficient is a constant-increasing coefficient set when a virtual experiment system is initialized, the base is an initial value of sound intensity set when the virtual experiment system is initialized, the increasing coefficient and the initial value are any appropriate values, and the sound output by the computer equipment becomes stronger as the virtual voltage value increases.
The breakdown process display module realizes the functions of electric field breakdown display and high voltage cutting protection and comprises the following steps:
1) automatically converting the breakdown voltage experimental value into a breakdown voltage value under a standard condition, wherein a humidity correction index is w to be 0, an air density correction index is m to be n to be 1, and an air density correction coefficient is as follows:
air density correction factor Kh1 is ═ 1; average breakdown field strength Em＝U0D (kV/cm); breakdown voltage value U under standard condition0(kV) is the external insulation discharge voltage U in the standard atmospheric state0＝Ub/Kd(kV); atmospheric pressure P in standard atmospheric state00.1013 MPa; temperature t020 ℃ is set; absolute humidity h is 11g/m3，UbThe breakdown voltage value under the current environment is shown, and d represents the distance between the current-conducting plates; kdRepresents the air density correction factor, P represents the current ambient atmospheric pressure, and t represents the current ambient temperature.
2) In the virtual experiment of the breakdown voltage of the uniform electric field, the calculation formula of the breakdown voltage value is as follows:
wherein d represents the distance between the conductive plates in cm; δ represents the relative density of air;
when the value of the virtual voltage reaches the breakdown voltage value, the virtual experiment system pops up a red warning window to display the breakdown voltage under the current experiment parameters and prompt that the electric field is broken down, and a buzzer connected with the system can continuously make a sound to remind an experimenter, and meanwhile, the virtual voltage value is set to be zero to terminate the virtual experiment of the breakdown voltage of the uniform electric field.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (9)
1. The utility model provides a virtual experimental system of simulation even electric field breakdown voltage which characterized in that: the device comprises a virtual voltage regulator, a virtual electric field module and a breakdown process showing module, wherein the virtual voltage regulator, the virtual electric field module and the breakdown process showing module are sequentially connected; the virtual voltage regulator is used for simulating high voltage required by a uniform electric field breakdown experiment, the virtual electric field module is used for displaying the change condition of a uniform electric field along with the rise of the voltage, and the breakdown process display module is used for realizing electric field breakdown display and high voltage cutting protection functions;
the virtual voltage regulator visually displays the virtual voltage output by the voltage regulator through the output virtual voltage display module;
the virtual electric field module comprises two conductive panels and a field intensity display module; the field intensity display module comprises an electric field line display module and a sound display module;
the virtual voltage regulator is connected with the two conductive panels and inputs virtual voltage to two ends of the two conductive panels; two conductive panels are placed in parallel, the distance between the two conductive panels represents the uniform electric field breakdown distance, and the distance is adjusted through the adjusting module.
2. The virtual experimental system for simulating breakdown voltage of uniform electric field according to claim 1, wherein: the output virtual voltage display module is used for visually displaying the output virtual voltage of the voltage regulator of the current virtual experiment system in the form of a voltmeter.
3. The virtual experimental system for simulating breakdown voltage of uniform electric field according to claim 1, wherein: the adjusting module is used for adjusting the distance between the two conductive panels by inputting the required distance adjusting value through a keyboard.
4. The virtual experimental system for simulating breakdown voltage of uniform electric field according to claim 1, wherein: the virtual voltage regulator is divided into a manual virtual voltage regulator and an automatic virtual voltage regulator.
5. The virtual experimental system for simulating breakdown voltage of uniform electric field according to claim 4, wherein: the manual virtual voltage regulator is used for changing virtual voltage by experimenters through a keyboard or a mouse, the operating voltage of an UP key of the keyboard is increased, the operating voltage of a DOWN key of the keyboard is reduced, or the voltage is increased and reduced by directly pulling the mouse, and the output virtual voltage of the virtual voltage regulator changes correspondingly when the keyboard or the mouse is operated once each time; the voltage output initial value of the manual virtual voltage regulator is defaulted to 0, the voltage value increased and decreased in each operation is defaulted to 1kV, and the voltage output initial value and the default value of the voltage value increased and decreased in each operation are flexibly set in a virtual experiment system according to experiment requirements.
6. The virtual experimental system for simulating breakdown voltage of uniform electric field according to claim 4, wherein: the automatic virtual voltage regulator is characterized in that an experimenter sets a voltage output initial value and a default value of a voltage value increased or decreased in each operation in a virtual experiment system according to experiment requirements, if the experimenter does not set the voltage output initial value in advance, the virtual experiment system defaults the automatically set voltage output initial value to 0, and the voltage value increased or decreased in each operation is defaulted to 1 kV; in the automatic virtual voltage regulator mode, the virtual experiment system outputs an initial value V according to the voltage0And increasing or decreasing the voltage value d per operation, based on the formula Vt-V0And the + dt is used for automatically generating a virtual voltage output by the voltage regulator, wherein Vt is a virtual voltage value output by the voltage regulator, and dt is an increasing and decreasing voltage value.
7. The virtual experimental system for simulating breakdown voltage of uniform electric field according to claim 1, wherein: the electric field line display module expresses the voltage by the density of virtual electric field lines, the virtual electric field lines are expressed by a one-way arrow pointing to the grounding end conductive panel from the positive end conductive panel, and the quantity change of the virtual electric field lines is expressed by the following formula:
amount＝input voltage*coefficient+base，input voltage
the electric field line display module comprises an electric field line display module, an input voltage, a coefficient, an increment coefficient and a base, wherein the ampount is an electric field line display module, the input voltage is a current virtual voltage value, the coefficient is a constant-increment coefficient set when a virtual experiment system is initialized, the base is an initial value of the number of the virtual electric field lines set when the virtual experiment system is initialized, the increment coefficient and the initial value are arbitrary values, and the number of the virtual electric field lines is increased and is denser along with the increase of the virtual voltage value.
8. The virtual experimental system for simulating breakdown voltage of uniform electric field according to claim 1, wherein: the sound display module expresses the voltage by using the strength of sound, and the strength change of the sound is expressed by the formula:
volume＝input voltage*coefficient+base
the volume is a sound display module, the input voltage is a current virtual voltage value, the coefficient is a constant-increasing coefficient set when a virtual experiment system is initialized, the base is an initial value of sound intensity set when the virtual experiment system is initialized, the increasing coefficient and the initial value are any appropriate values, and the sound output by the computer equipment becomes stronger as the virtual voltage value increases.
9. The virtual experimental system for simulating breakdown voltage of uniform electric field according to claim 1, wherein: the breakdown process display module realizes the functions of electric field breakdown display and high voltage cutting protection and comprises the following steps:
1) automatically converting the breakdown voltage experimental value into a breakdown voltage value under a standard condition, wherein a humidity correction index is w to be 0, an air density correction index is m to be n to be 1, and an air density correction coefficient is as follows:
air density correction factor Kh1 is ═ 1; average breakdown field strength Em＝U0D (kV/cm); breakdown voltage value U under standard condition0(kV) is the external insulation discharge voltage U in the standard atmospheric state0＝Ub/Kd(kV); atmospheric pressure P in standard atmospheric state00.1013 MPa; temperature t020 ℃ is set; absolute humidity h is 11g/m3，UbThe breakdown voltage value under the current environment is shown, and d represents the distance between the current-conducting plates; kdRepresenting an air density correction coefficient, P representing the current ambient atmospheric pressure, and t representing the current ambient temperature;
2) in the virtual experiment of the breakdown voltage of the uniform electric field, the formula of the breakdown voltage value is as follows:
wherein d represents the distance between the conductive plates in cm; δ represents the relative density of air;
when the value of the virtual voltage reaches the breakdown voltage value, the virtual experiment system pops up a red warning window to display the breakdown voltage under the current experiment parameters and prompt that the electric field is broken down, and a buzzer connected with the system can continuously make a sound to remind an experimenter, and meanwhile, the virtual voltage value is set to be zero to stop the breakdown voltage of the uniform electric field to be virtual and real.
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Application publication date: 20200421 |