CN114002563A - Partial discharge-free test power supply generation device and method - Google Patents
Partial discharge-free test power supply generation device and method Download PDFInfo
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- CN114002563A CN114002563A CN202111275531.8A CN202111275531A CN114002563A CN 114002563 A CN114002563 A CN 114002563A CN 202111275531 A CN202111275531 A CN 202111275531A CN 114002563 A CN114002563 A CN 114002563A
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- G—PHYSICS
- G01—MEASURING; TESTING
- 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
- G01R31/1227—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 of components, parts or materials
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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Abstract
The invention relates to the technical field of power supplies, and discloses a device and a method for generating a power supply without partial discharge test.
Description
Technical Field
The invention relates to the technical field of power supplies, in particular to a device and a method for generating a power supply without partial discharge test.
Background
The partial discharge is a discharge phenomenon that an electrode of the insulating medium of the high-voltage equipment does not penetrate under the action of high electric field intensity, so that certain potential safety hazards exist and the aging of the insulating layer is accelerated.
The existing test power supply device is multiple and heavy in matching devices, equipment is inconvenient to transport and operate, reactive compensation depends on a mode of externally matching inductors, the external environment interference is easy to cause, no-load test is repeatedly carried out before the test is started, whether electromagnetic interference or partial discharge exists in an original circuit is judged, and therefore the test precision can be influenced.
Disclosure of Invention
The invention provides a device and a method for generating a test power supply without partial discharge, which solve the technical problem of low test precision caused by electromagnetic interference or partial discharge.
In view of this, the first aspect of the present invention provides a power generation device for a non-partial discharge test, including: the device comprises a power input module, a waveform generation module, a linear amplifier and a partial discharge-free transformer;
the power supply input module is used for generating a direct-current voltage signal and sending the direct-current voltage signal to the linear amplifier;
the waveform generation module is used for generating a sine waveform signal based on a pre-input frequency parameter and sending the sine waveform signal to the linear amplifier;
the linear amplifier is used for receiving the direct-current voltage signal and the sine waveform signal so as to generate a sine alternating-current voltage signal and generating the sine alternating-current voltage signal to the partial discharge-free transformer;
the partial discharge-free transformer is used for receiving the sinusoidal alternating voltage signal so as to generate a sinusoidal alternating voltage signal without partial discharge for output.
Preferably, the power input module comprises a mains supply input module, a rectifying module and a voltage stabilizing module;
the commercial power input module is used for inputting commercial power alternating-current voltage to the rectification module;
the rectification module is used for rectifying the alternating-current voltage of the mains supply to convert the alternating-current voltage into direct-current voltage and inputting the direct-current voltage into the voltage stabilizing module;
the voltage stabilizing module is further configured to stabilize the dc voltage, so as to generate the dc voltage signal and input the dc voltage signal to the linear amplifying module.
Preferably, the waveform generation module comprises an MCU module and a waveform generator;
the MCU module is used for receiving pre-input frequency parameters sent by an external PC end and sending the pre-input frequency parameters to the waveform generator;
the waveform generator is used for generating the sine waveform signal according to the pre-input frequency parameters.
Preferably, the device further comprises a voltage regulating module for regulating the pressure of the sinusoidal alternating-current voltage signal output by the partial discharge-free transformer.
In a second aspect, the present invention further provides a method for generating a test power supply without partial discharge, where the method is based on the above test power supply generating device without partial discharge and includes the following steps:
generating a direct current voltage signal through a power input module;
generating a sine waveform signal based on a pre-input frequency parameter through a waveform generation module;
receiving the DC voltage signal and the sinusoidal waveform signal through a linear amplifier, thereby generating a sinusoidal AC voltage signal;
and receiving the sinusoidal alternating voltage signal through the partial discharge-free transformer, thereby generating a sinusoidal alternating voltage signal without partial discharge for output.
Preferably, the step of generating the dc voltage signal by the power input module specifically includes:
inputting commercial power alternating-current voltage through a commercial power input module;
rectifying the alternating-current voltage of the mains supply to convert the alternating-current voltage into direct-current voltage;
and stabilizing the direct current voltage to generate the direct current voltage signal.
Preferably, the method further comprises: and adjusting the pressure intensity of the sinusoidal alternating voltage signal output by the partial discharge-free transformer.
According to the technical scheme, the invention has the following advantages:
according to the invention, the power input module is used for generating a direct current voltage signal, the waveform generation module is used for generating a sine waveform signal based on a pre-input frequency parameter, the linear amplifier is used for receiving the direct current voltage signal and the sine waveform signal so as to generate a sine alternating current voltage signal, and the partial discharge-free transformer is used for generating a sine alternating current voltage signal without partial discharge so as to output the sine alternating current voltage signal, so that a stable waveform signal can be output, and the technical problem of low test precision caused by electromagnetic interference or partial discharge is avoided.
Drawings
Fig. 1 is a schematic structural diagram of a power generation device for a non-partial discharge test according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a power input module according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a waveform generation module according to an embodiment of the present invention;
fig. 4 is a flowchart of a method for generating a test power supply without partial discharge according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
For easy understanding, please refer to fig. 1, the present invention provides a power generation apparatus for a non-partial discharge test, including: a power input module 100, a waveform generation module 200, a linear amplifier 300 and a non-partial discharge transformer 400;
the power input module 100 is configured to generate a dc voltage signal and send the dc voltage signal to the linear amplifier 300;
the waveform generating module 200 is configured to generate a sinusoidal waveform signal based on a pre-input frequency parameter, and further configured to send the sinusoidal waveform signal to the linear amplifier 300;
the linear amplifier 300 is configured to receive the dc voltage signal and the sinusoidal waveform signal, thereby generating a sinusoidal ac voltage signal, and further configured to generate the sinusoidal ac voltage signal to the partial discharge free transformer 400;
the partial discharge free transformer 400 is configured to receive the sinusoidal ac voltage signal, thereby generating a sinusoidal ac voltage signal without partial discharge for output.
In one embodiment, as shown in fig. 2, the power input module 100 includes a commercial power input module 101, a rectification module 102, and a voltage regulation module 103;
the commercial power input module 101 is used for inputting commercial power alternating-current voltage to the rectification module 102;
the commercial power alternating voltage is 220V.
The rectifying module 102 is configured to rectify and convert a commercial ac voltage into a dc voltage, and is further configured to input the dc voltage to the voltage stabilizing module 103;
the voltage stabilizing module 103 is further configured to stabilize the dc voltage, so as to generate a dc voltage signal and input the dc voltage signal to the linear amplifying module.
In this embodiment, the voltage stabilizing module 103 stabilizes the dc voltage to make the voltage fluctuation range less than 0.5%.
In one particular embodiment, as shown in fig. 3, the waveform generation module 200 includes an MCU module 201 and a waveform generator 202;
the MCU module 201 is configured to receive a pre-input frequency parameter sent by an external PC terminal, and is further configured to send the pre-input frequency parameter to the waveform generator 202;
the waveform generator 202 is used for generating a sinusoidal waveform signal according to a frequency parameter input in advance.
In one embodiment, the voltage regulating module is further included to regulate the pressure of the sinusoidal ac voltage signal output by the partial discharge free transformer 400.
It should be noted that after the partial discharge-free transformer 400 outputs the sinusoidal ac voltage signal to the test apparatus, the initial voltage value and the extinguishing voltage value of the partial discharge need to be accurately obtained through voltage regulation.
Specifically, the voltage regulation process in this embodiment is as follows:
the power generation device of the partial discharge-free test is used for estimating the value of partial discharge starting voltage Um as much as possible at the beginning of testing the high-voltage device to be tested;
boosting the voltage of the power generation device for the non-partial discharge test, and keeping the voltage boosting at a constant speed of 2 Um/min;
when the PC end receives a first partial discharge signal detected by the partial discharge detector, the initial discharge voltage value U0 of partial discharge is recorded.
When the voltage is boosted to a voltage Um value, reducing the voltage of the power generation device of the non-partial discharge test to 0 at a constant speed;
boosting the voltage of the power supply without partial discharge test again at the speed of 2.2U 0/min;
when partial discharge is detected, recording the initial discharge voltage value U0 of the partial discharge again, continuously boosting the voltage to 2.2U 0/min, and maintaining the voltage for one minute;
starting to reduce the pressure to 0 at a constant speed, wherein the pressure reduction speed is 2.2U 0/min, and recording the end discharge voltage value U1 of partial discharge in the period;
and finishing the detection, and recording and displaying the partial discharge characteristic curve, the U0 value and the U1 value in the second test by the PC terminal.
The embodiment provides a test power generation device without partial discharge, which generates a direct current voltage signal through a power input module, generates a sine waveform signal based on a pre-input frequency parameter through a waveform generation module, receives the direct current voltage signal and the sine waveform signal through a linear amplifier, generates a sine alternating current voltage signal without partial discharge through a transformer without partial discharge, and outputs the sine alternating current voltage signal, so that a stable waveform signal can be output, and the technical problem of lower test precision caused by electromagnetic interference or partial discharge is avoided.
The above is a detailed description of an embodiment of the non-partial discharge test power supply generation apparatus provided in the present invention, and the following is a detailed description of an embodiment of the non-partial discharge test power supply generation method provided in the present invention.
For convenience of understanding, please refer to fig. 4, the method for generating a test power supply without partial discharge provided by the present invention is based on the above test power supply generating device without partial discharge, and includes the following steps:
s1, generating a direct current voltage signal through a power input module;
s2, generating a sine wave signal based on a pre-input frequency parameter through a wave generating module;
s3, receiving the direct current voltage signal and the sine waveform signal through a linear amplifier, and generating a sine alternating current voltage signal;
and S4, receiving the sinusoidal alternating-current voltage signal through the partial discharge-free transformer, thereby generating and outputting the sinusoidal alternating-current voltage signal without partial discharge.
In a specific embodiment, step S1 specifically includes:
s101, inputting commercial power alternating-current voltage through a commercial power input module;
s102, rectifying the alternating-current voltage of the mains supply to convert the alternating-current voltage into direct-current voltage;
s103, stabilizing the direct current voltage, and generating a direct current voltage signal.
In a specific embodiment, the method further comprises the following steps: and adjusting the pressure intensity of the sinusoidal alternating voltage signal output by the partial discharge-free transformer.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
The embodiment provides a method for generating a test power supply without partial discharge, which includes generating a direct current voltage signal through a power supply input module, generating a sinusoidal waveform signal through a waveform generation module based on a pre-input frequency parameter, receiving the direct current voltage signal and the sinusoidal waveform signal through a linear amplifier to generate a sinusoidal alternating current voltage signal, generating the sinusoidal alternating current voltage signal without partial discharge through a transformer without partial discharge and outputting the sinusoidal alternating current voltage signal, so that a stable waveform signal can be output, and the technical problem of low test precision caused by electromagnetic interference or partial discharge is solved.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a unit is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. A no partial discharge test power generation device, characterized by comprising: the device comprises a power input module, a waveform generation module, a linear amplifier and a partial discharge-free transformer;
the power supply input module is used for generating a direct-current voltage signal and sending the direct-current voltage signal to the linear amplifier;
the waveform generation module is used for generating a sine waveform signal based on a pre-input frequency parameter and sending the sine waveform signal to the linear amplifier;
the linear amplifier is used for receiving the direct-current voltage signal and the sine waveform signal so as to generate a sine alternating-current voltage signal and generating the sine alternating-current voltage signal to the partial discharge-free transformer;
the partial discharge-free transformer is used for receiving the sinusoidal alternating voltage signal so as to generate a sinusoidal alternating voltage signal without partial discharge for output.
2. The power generation device for the partial discharge-free test according to claim 1, wherein the power input module comprises a commercial power input module, a rectification module and a voltage stabilization module;
the commercial power input module is used for inputting commercial power alternating-current voltage to the rectification module;
the rectification module is used for rectifying the alternating-current voltage of the mains supply to convert the alternating-current voltage into direct-current voltage and inputting the direct-current voltage into the voltage stabilizing module;
the voltage stabilizing module is further configured to stabilize the dc voltage, so as to generate the dc voltage signal and input the dc voltage signal to the linear amplifying module.
3. The partial discharge-free test power generation device according to claim 1, wherein the waveform generation module comprises an MCU module and a waveform generator;
the MCU module is used for receiving pre-input frequency parameters sent by an external PC end and sending the pre-input frequency parameters to the waveform generator;
the waveform generator is used for generating the sine waveform signal according to the pre-input frequency parameters.
4. The power generation device for the non-partial discharge test according to claim 1, further comprising a voltage regulation module for regulating the pressure of the sinusoidal ac voltage signal output by the non-partial discharge transformer.
5. A method for generating a test power supply without partial discharge, which is based on the test power supply generating device without partial discharge of any claim 1 to 4, and is characterized by comprising the following steps:
generating a direct current voltage signal through a power input module;
generating a sine waveform signal based on a pre-input frequency parameter through a waveform generation module;
receiving the DC voltage signal and the sinusoidal waveform signal through a linear amplifier, thereby generating a sinusoidal AC voltage signal;
and receiving the sinusoidal alternating voltage signal through the partial discharge-free transformer, thereby generating a sinusoidal alternating voltage signal without partial discharge for output.
6. The method according to claim 5, wherein the step of generating the dc voltage signal via the power input module specifically comprises:
inputting commercial power alternating-current voltage through a commercial power input module;
rectifying the alternating-current voltage of the mains supply to convert the alternating-current voltage into direct-current voltage;
and stabilizing the direct current voltage to generate the direct current voltage signal.
7. The method for generating a test power supply without partial discharge according to claim 5, further comprising: and adjusting the pressure intensity of the sinusoidal alternating voltage signal output by the partial discharge-free transformer.
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| CN202111275531.8A CN114002563A (en) | 2021-10-29 | 2021-10-29 | Partial discharge-free test power supply generation device and method |
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| CN202111275531.8A CN114002563A (en) | 2021-10-29 | 2021-10-29 | Partial discharge-free test power supply generation device and method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201194021Y (en) * | 2008-04-24 | 2009-02-11 | 苏州市华电电气技术有限公司 | Portable partial discharging experiment electric power source |
| CN102087301A (en) * | 2009-12-07 | 2011-06-08 | 苏州华电电气股份有限公司 | Three-phase power supply device for partial discharge test |
| CN203069734U (en) * | 2013-02-20 | 2013-07-17 | 广州南方电力集团技术有限公司 | 300kW transformer partial discharge and induced over voltage withstand test system |
| CN104300827A (en) * | 2014-11-13 | 2015-01-21 | 国家电网公司 | 2,400kV/30mA movable partial-discharge-free direct-current high-voltage generator |
| JP2015062009A (en) * | 2013-08-21 | 2015-04-02 | 学校法人 芝浦工業大学 | Power supply device for partial discharge pulse testing, partial discharge pulse testing method, and winding machine with partial discharge pulse testing function |
| CN108599586A (en) * | 2018-06-26 | 2018-09-28 | 国网浙江省电力有限公司 | A kind of high-power high voltage experiment no partial discharge frequency conversion power supply and its resonant experimental device of parallel running |
| CN111693835A (en) * | 2020-06-19 | 2020-09-22 | 国网北京市电力公司 | Power frequency triple frequency conversion three-in-one integrated partial discharge-free test power supply |
-
2021
- 2021-10-29 CN CN202111275531.8A patent/CN114002563A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201194021Y (en) * | 2008-04-24 | 2009-02-11 | 苏州市华电电气技术有限公司 | Portable partial discharging experiment electric power source |
| CN102087301A (en) * | 2009-12-07 | 2011-06-08 | 苏州华电电气股份有限公司 | Three-phase power supply device for partial discharge test |
| CN203069734U (en) * | 2013-02-20 | 2013-07-17 | 广州南方电力集团技术有限公司 | 300kW transformer partial discharge and induced over voltage withstand test system |
| JP2015062009A (en) * | 2013-08-21 | 2015-04-02 | 学校法人 芝浦工業大学 | Power supply device for partial discharge pulse testing, partial discharge pulse testing method, and winding machine with partial discharge pulse testing function |
| CN104300827A (en) * | 2014-11-13 | 2015-01-21 | 国家电网公司 | 2,400kV/30mA movable partial-discharge-free direct-current high-voltage generator |
| CN108599586A (en) * | 2018-06-26 | 2018-09-28 | 国网浙江省电力有限公司 | A kind of high-power high voltage experiment no partial discharge frequency conversion power supply and its resonant experimental device of parallel running |
| CN111693835A (en) * | 2020-06-19 | 2020-09-22 | 国网北京市电力公司 | Power frequency triple frequency conversion three-in-one integrated partial discharge-free test power supply |
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