CN217954631U - High-voltage partial discharge simulation device - Google Patents
High-voltage partial discharge simulation device Download PDFInfo
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- CN217954631U CN217954631U CN202220408346.5U CN202220408346U CN217954631U CN 217954631 U CN217954631 U CN 217954631U CN 202220408346 U CN202220408346 U CN 202220408346U CN 217954631 U CN217954631 U CN 217954631U
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Abstract
The utility model provides a high-voltage partial discharge simulation device, which comprises an input port, a power management unit, a central processing unit, a PWM output unit, a program control voltage regulation unit, a high-voltage output unit, an RS485 communication unit and a wireless communication unit; the power management unit supplies power to other units; the central processing unit is connected with the input port through the RS485 communication unit or the wireless communication unit to receive a discharging instruction, the central processing unit is connected with the input side of the PWM output unit and the input side of the program-controlled voltage regulating unit to output PWM signals and power supply voltages with different space ratios according to the discharging instruction, and the output side of the PWM output unit and the output side of the program-controlled voltage regulating unit are both connected with the high-voltage output unit to control and output discharging voltages with different grades. The high-voltage partial discharge simulation device realizes fault simulation of high-voltage partial discharge through simulating a partial discharge state, helps to practice training, and is high in safety.
Description
Technical Field
The utility model relates to an electric power analog simulation field, specific theory has related to a high pressure partial discharge analogue means.
Background
Partial discharge is mainly discharge generated in the insulation of a transformer, a mutual inductor and other high-voltage electrical equipment under the action of high voltage. This discharge is only present in a partial location of the insulation and does not immediately cause a full insulation penetration breakdown or flashover, and is therefore referred to as a partial discharge. The damage effect of local discharge on insulation is a slow process, and starts from a local area, which can reduce the insulation life, influence the safe operation of equipment, and is a hidden danger for high-voltage equipment, so that the local discharge is more and more emphasized by the use units of high-voltage electrical products.
Partial discharge phenomena can be generated in the operation process of each part of some high-electrical equipment, and the energy for starting the partial discharge is very small and cannot influence the operation of the equipment. However, if partial discharge occurs continuously for a long time, the weak discharge amount will generate an accumulative effect, thereby causing the gradual deterioration of the insulation performance and finally causing the insulation breakdown, so that a large power accident occurs.
In order to prevent the occurrence of partial discharge, the reasons for the generation and the serious harmfulness of the partial discharge are firstly known, so that a manufacturing unit carries out reasonable structural design on a high-voltage electrical product, elaborate construction is carried out, the purity of the material is improved, and the quality of each link is strictly processed. The operation unit should enhance the maintenance, monitoring, etc. of the high voltage equipment in order to effectively prevent the occurrence of partial discharge of the high voltage equipment.
Various partial discharge monitoring devices are designed for detecting the partial discharge phenomenon, and a device capable of simulating partial discharge is needed for facilitating the test of various partial discharge monitoring devices and the training, and the correct use of the partial discharge monitoring devices by examination students and the observation of the partial discharge phenomenon, so that various experiments are facilitated.
In order to solve the above problems, people are always seeking an ideal technical solution.
Disclosure of Invention
The utility model aims at the not enough of prior art to a high-pressure partial discharge analogue means that simulation high-pressure partial discharge trouble, security are high, have multistage discharge voltage is provided.
In order to realize the purpose, the utility model discloses the technical scheme who adopts is: a high-voltage partial discharge simulation device comprises an input port, a power management unit, a central processing unit, a PWM output unit, a program-controlled voltage regulation unit, a high-voltage output unit, an RS485 communication unit and a wireless communication unit;
the power supply management unit supplies power to other units;
the central processing unit is connected with the input port through the RS485 communication unit or the wireless communication unit to receive a discharge instruction, the central processing unit is connected with the input side of the PWM output unit and the input side of the program-controlled voltage regulating unit to output PWM signals and power supply voltages with different space ratios according to the discharge instruction, and the output side of the PWM output unit and the output side of the program-controlled voltage regulating unit are both connected with the high-voltage output unit to control and output discharge voltages with different grades.
Basically, the program-controlled voltage regulating unit comprises a program-controlled voltage regulator.
Basically, the PWM output unit includes a PWM controller.
Basically, the central processing unit comprises a microprocessor MCU.
Basically, the high voltage output unit includes a high voltage output circuit.
The utility model discloses relative prior art has substantive characteristics and progress, specific theory, the utility model discloses a central processing unit, PWM output unit, programme-controlled voltage regulating unit and high-voltage output unit are the core, export the discharge voltage of different grades, and then realize the setting of different grade discharge voltage trouble to satisfy real standard demand of instructing the in-process student of instructing, improve real standard student's real standard operational capability and judgment ability, and the security is higher.
Drawings
Fig. 1 is a schematic block diagram of a medium-high voltage partial discharge simulation apparatus according to the present invention.
Fig. 2 is a circuit diagram of the microprocessor of the middle-high voltage partial discharge simulation device according to the present invention.
Fig. 3 is a circuit diagram of the program-controlled voltage regulating unit of the middle-high voltage partial discharge simulation device of the present invention.
Fig. 4 is a circuit diagram of a PWM output unit of the middle-high voltage partial discharge simulation apparatus according to the present invention.
Fig. 5 is a circuit diagram of a power management unit of the middle-high voltage partial discharge simulation apparatus according to the present invention.
Fig. 6 is a circuit diagram of a high voltage output unit of the middle/high voltage partial discharge simulation apparatus according to the present invention.
Detailed Description
The technical solution of the present invention will be described in further detail through the following embodiments.
As shown in fig. 1 to 6, a high-voltage partial discharge simulation apparatus includes an input port, a power management unit, a central processing unit, a PWM output unit, a program-controlled voltage regulation unit, a high-voltage output unit, an RS485 communication unit, and a wireless communication unit.
And the power management unit supplies power to other units.
The central processing unit is connected with the input port through the RS485 communication unit or the wireless communication unit to receive the discharging instruction, the input port can be an input window on the practical training equipment, and can also be other input equipment such as a handheld mobile operation terminal and the like, the process is usually operated by a practical training teacher, and the instruction in the examination is input by means of the input window in the practical training system software.
The central processing unit is connected with the input side of the PWM output unit and the input side of the program-controlled voltage regulating unit so as to output PWM signals and power supply voltages with different space ratios according to the discharge instruction, and the output side of the PWM output unit and the output side of the program-controlled voltage regulating unit are both connected with the high-voltage output unit so as to control and output discharge voltages with different grades, so that the fault point setting of partial discharge is completed.
The program-controlled voltage regulating unit can be a program-controlled voltage regulator, the PWM output unit can select a PWM controller, the central processing unit can select a microprocessor MCU, and the high-voltage output unit is a high-voltage output circuit.
The working process is as follows:
firstly, a practical training teacher inputs required voltage through an input port (an input window of a training system), the MCU receives an input instruction and analyzes the input instruction, the PWM controller and the program-controlled voltage regulator are controlled to output corresponding PWM signals and power supply voltage according to the instruction requirement, and then a high-voltage output circuit outputs discharge voltage to form a fault point.
The training trainee operates the high-voltage partial discharge detector, searches for a partial discharge position according to the partial discharge point sound and the feedback of the detector, and reports the fault phenomenon, fault reason and fault elimination method of the high-voltage partial discharge by combining a training system.
And in the training system, the examination score is given according to the uploaded content and the examination question answers.
Meanwhile, the training system sends a fault removing instruction to the MCU through the RS485 communication unit or the wireless communication unit, and the MCU closes the partial discharge instruction after receiving the instruction, and further closes the PWM output unit and the program-controlled voltage regulating unit, so that the high-voltage partial discharge is closed.
The student can further confirm whether the high-voltage partial discharge fault is eliminated through sound or a detector.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same; although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that: modifications can still be made to the embodiments of the invention or equivalents may be substituted for some of the features; without departing from the spirit of the technical solution of the present invention, the present invention should be covered by the technical solution of the present invention.
Claims (5)
1. A high-voltage partial discharge simulation device is characterized in that: the system comprises an input port, a power management unit, a central processing unit, a PWM output unit, a program-controlled voltage regulation unit, a high-voltage output unit, an RS485 communication unit and a wireless communication unit;
the power supply management unit supplies power to other units;
the central processing unit is connected with the input port through the RS485 communication unit or the wireless communication unit to receive a discharging instruction, the central processing unit is connected with the input side of the PWM output unit and the input side of the program-controlled voltage regulating unit to output PWM signals and power supply voltages with different space ratios according to the discharging instruction, and the output side of the PWM output unit and the output side of the program-controlled voltage regulating unit are both connected with the high-voltage output unit to control and output discharging voltages with different grades.
2. The high-voltage partial discharge simulation apparatus according to claim 1, wherein: the program-controlled voltage regulating unit comprises a program-controlled voltage regulator.
3. The high-voltage partial discharge simulation apparatus according to claim 2, wherein: the PWM output unit includes a PWM controller.
4. The high-voltage partial discharge simulation apparatus according to claim 3, wherein: the central processing unit comprises a microprocessor MCU.
5. The high-voltage partial discharge simulation apparatus according to claim 4, wherein: the high-voltage output unit comprises a high-voltage output circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220408346.5U CN217954631U (en) | 2022-02-28 | 2022-02-28 | High-voltage partial discharge simulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220408346.5U CN217954631U (en) | 2022-02-28 | 2022-02-28 | High-voltage partial discharge simulation device |
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| Publication Number | Publication Date |
|---|---|
| CN217954631U true CN217954631U (en) | 2022-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220408346.5U Active CN217954631U (en) | 2022-02-28 | 2022-02-28 | High-voltage partial discharge simulation device |
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| CN (1) | CN217954631U (en) |
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2022
- 2022-02-28 CN CN202220408346.5U patent/CN217954631U/en active Active
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