CN111157828A - Load test circuit and test method for alternating current reactor - Google Patents
Load test circuit and test method for alternating current reactor Download PDFInfo
- Publication number
- CN111157828A CN111157828A CN202010118118.XA CN202010118118A CN111157828A CN 111157828 A CN111157828 A CN 111157828A CN 202010118118 A CN202010118118 A CN 202010118118A CN 111157828 A CN111157828 A CN 111157828A
- Authority
- CN
- China
- Prior art keywords
- load
- frequency power
- power supply
- tested
- reactor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/30—Structural combination of electric measuring instruments with basic electronic circuits, e.g. with amplifier
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention discloses a load test circuit and a test method of an alternating current reactor, and the load test circuit comprises a high-frequency power supply module, a low-frequency power supply module and a test module, wherein a high-frequency power supply HF is arranged in the high-frequency power supply module, the test module comprises a transformer T, a capacitor C1, a capacitor C4 and an ammeter A, and two ends of the high-frequency power supply HF are connected with two ends of a primary coil of the transformer T; the one end of the secondary coil of transformer is connected capacitance C1 to the one end of load Lx, and ampere meter A, electric capacity C4 to the load Lx other end are connected to the other end of secondary coil, low frequency power module includes low frequency power source LF and inductance L1 and electric capacity C3, low frequency power source LF, inductance L1 concatenate in proper order with load Lx and form the return circuit, the both ends of low frequency power source LF are parallelly connected and are equipped with electric capacity C3, load Lx is the reactor. The product development time is shortened, the qualification rate of samples sent to the client is improved, and the experience degree of a user is improved.
Description
Technical Field
The invention relates to the field of reactor load testing, in particular to a load testing circuit and a load testing method for an alternating current reactor.
Background
Reactors, also called inductors, are known in which a conductor, when energized, generates a magnetic field in a certain spatial area occupied by the conductor, so that all electrical conductors capable of carrying current have the same inductive properties as the inductors in general. However, the inductance of the electrified long straight conductor is small, and the generated magnetic field is not strong, so that the actual reactor is in a mode that a conducting wire is wound into a solenoid, and is called as an air-core reactor; in order to make this solenoid have a larger inductance, a core, called a core reactor, is sometimes inserted into the solenoid. Reactance is divided into inductive reactance and capacitive reactance, and the more scientific classification is that inductive reactance (inductor) and capacitive reactance (capacitor) are collectively called reactor, however, since the inductor is existed in the past and is called reactor, the capacitor is called reactor now, and the reactor is specially called inductor.
The load just designed in the prior art can only be directly connected to a household circuit specially used for experiments or a special expensive ultrahigh frequency power supply is purchased for testing, so that the cost of the experiments is high, accidents are easily caused by blind direct connection to the prior household circuit, and a test circuit capable of simulating the load in an actual circuit is lacked.
An effective solution to the problems in the related art has not been proposed yet.
Disclosure of Invention
The present invention provides a load testing circuit and a testing method for an ac reactor, which are directed to the problems in the related art, so as to overcome the above technical problems in the related art.
The technical scheme of the invention is realized as follows:
according to one aspect of the invention, the load test circuit of the alternating current reactor comprises a high-frequency power supply module, a low-frequency power supply module and a test module, wherein a high-frequency power supply HF is arranged in the high-frequency power supply module, the test module comprises a transformer T, a capacitor C1, a capacitor C4 and an ammeter A, and two ends of the high-frequency power supply HF are connected with two ends of a primary coil of the transformer T; the one end of the secondary coil of transformer is connected capacitance C1 to the one end of load Lx, and ampere meter A, electric capacity C4 to the load Lx other end are connected to the other end of secondary coil, low frequency power module includes low frequency power source LF and inductance L1 and electric capacity C3, low frequency power source LF, inductance L1 concatenate in proper order with load Lx and form the return circuit, the both ends of low frequency power source LF are parallelly connected and are equipped with electric capacity C3, load Lx is the reactor.
Optionally, the high frequency power supply HF is grounded.
Optionally, the power frequency section of the high-frequency power supply HF is greater than 100 KHZ.
Optionally, the power frequency section of the low-frequency power source LF is 1KHZ to 10 KHZ.
According to another aspect of the invention, a method for testing the load of an alternating current reactor is provided.
The method comprises the following steps:
selecting a group of m load products to become a load to be tested, and calculating the safe current range of the qualified products in the actual use process according to the design of the load;
selecting one load to be tested, and putting the load to be tested into a load test circuit; turning on a low-frequency power supply LF or a high-frequency power supply HF as required or simultaneously turning on the low-frequency power supply LF and the high-frequency power supply HF, so that a current I2 generated by the low-frequency power supply LF and a current I1 generated by the high-frequency power supply HF simultaneously pass through a load Lx;
at the moment, reading records of an observation ammeter A are recorded to obtain data I;
selecting a plurality of loads to be tested from the rest products in the same group of products, replacing the loads to be tested, and repeating the processes respectively to obtain data II and data N;
comparing the data I, the data II and the data N with the safe current, and recording the data higher or lower than the safe current range, wherein the number of the data is N; the qualification rate of the reorganized product is calculated through a formula 1-n/m.
The method further comprises the steps of selecting one load to be tested, and putting the load to be tested into a load testing circuit, wherein a thermometer is mounted on the load to be tested, and the temperature change trend of the load to be tested can be recorded.
The method further comprises the step of placing a decibel meter near the load to be tested connected into the load test circuit, and recording the decibel of the peak noise.
The invention has the beneficial effects that:
(1) the capacity of household circuits and high-frequency power supply equipment is reduced, the equipment input cost is saved, the accident probability is reduced, and the high-frequency power supply and the low-frequency power supply can be turned off at any time in the experiment process.
(2) The passing current of the alternating current reactor is verified through the load Lx testing circuit and the method in the alternating current reactor development stage, so that the running state of the reactor load Lx in an actual application circuit is accurately simulated, the qualification rate of the reactor load Lx is judged, the product development time can be shortened, the qualification rate of samples sent to a client side is improved, and the user experience degree is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a circuit diagram of an AC reactor load testing circuit according to an embodiment of the present invention;
fig. 2 is a flowchart of a method for testing load of an ac reactor according to an embodiment of the present invention.
Detailed Description
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 that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
As shown in fig. 1, according to an embodiment of the present invention, there is provided an ac reactor load testing circuit, including a high frequency power module, a low frequency power module, and a testing module, where the high frequency power module is provided with a high frequency power HF, the testing module includes a transformer T, a capacitor C1, a capacitor C4, and an ammeter a, and two ends of the high frequency power HF are connected to two ends of a primary coil of the transformer T; the one end of the secondary coil of transformer is connected capacitance C1 to the one end of load Lx, and ampere meter A, electric capacity C4 to the load Lx other end are connected to the other end of secondary coil, low frequency power module includes low frequency power source LF and inductance L1 and electric capacity C3, low frequency power source LF, inductance L1 concatenate in proper order with load Lx and form the return circuit, the both ends of low frequency power source LF are parallelly connected and are equipped with electric capacity C3, load Lx is the reactor.
Further, in one embodiment, the high frequency power supply HF is grounded.
In addition, in one embodiment, the supply frequency band of the high frequency power supply HF is greater than 100 KHZ.
In addition, in one embodiment, the power frequency band of the low frequency power source LF is 1KHZ to 10 KHZ.
As shown in fig. 2, according to an embodiment of the present invention, there is also provided an ac reactor load testing method.
The method comprises the following steps:
s101, selecting a group of m load products to become a load to be tested, and calculating the safe current range of the qualified products in the actual use process according to the design of the load;
step S103, selecting one load to be tested, and putting the load to be tested into a load test circuit;
step S105, turning on the low-frequency power supply LF or the high-frequency power supply HF or turning on the low-frequency power supply LF and the high-frequency power supply HF simultaneously according to requirements, and enabling a current I2 generated by the low-frequency power supply LF and a current I1 generated by the high-frequency power supply HF to pass through a load Lx simultaneously;
step S107, obtaining a first data in the reading record of the observation ammeter A;
step S109, selecting a plurality of loads to be tested from the rest products in the same group of products, replacing the loads to be tested, and repeating the processes respectively to obtain data II and data N;
step S111, comparing the data I, the data II and the data N with a safe current, and recording the data higher or lower than the safe current range, wherein the number of the data is N; the qualification rate of the reorganized product is calculated through a formula 1-n/m.
In addition, when the load testing device is applied specifically, one of the loads to be tested is selected, and the load to be tested is put into a load testing circuit, wherein a thermometer is mounted on the load to be tested, and the temperature change trend of the load to be tested can be recorded. And a decibel meter is arranged near the load to be tested and connected into the load test circuit, and the decibel of the peak noise is recorded. The service life of the load Lx of the detector can be judged through temperature rise of the load Lx of the detector, and the influence of the load Lx on the surrounding environment can be judged through detecting noise of the load Lx of the detector.
In summary, by means of the above technical solutions of the present invention, the characteristics that the inductor L1 passes the low-frequency impedance high frequency, and the capacitor C1 and the capacitor C4 pass the high-frequency impedance low frequency are skillfully utilized in the present invention to simultaneously apply the high-frequency current and the low-frequency current to the ac reactor load Lx to be tested, while the high-frequency power supply and the low-frequency power supply do not affect each other and are simultaneously applied to the ac reactor load Lx to be tested. The resonance characteristics of the inductor L1, the capacitor C1 and the capacitor C4 are skillfully utilized, so that the reactive power of the capacitor C1 is complementary with the reactive power of the inductor L1, and the input capacity of high-frequency power supply equipment is reduced. The equipment investment cost is saved. The load Lx can be protected by arranging the capacitor C2, the capacitor C3 is matched with the inductor L1, the larger the inductive reactance of the inductor L1 is, the smaller the capacitive reactance of the capacitor C3 is, otherwise, the smaller the inductive reactance of the inductor L1 in the circuit is, the larger the capacitive reactance of the capacitor C3 is, the use of the inductor L1 in a variable-frequency alternating-current circuit can be protected, the passing current of the inductor is verified by the load Lx testing circuit and the method in the alternating-current reactor development stage, the running state of the reactor load Lx in an actual application circuit is accurately simulated, the qualification rate of the reactor load Lx is judged, the product development time can be shortened, the qualification rate of samples sent to a client side is improved, and the experience degree of a user is improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. The alternating current reactor load test circuit is characterized by comprising a high-frequency power supply module, a low-frequency power supply module and a test module, wherein a high-frequency power supply HF is arranged in the high-frequency power supply module, the test module comprises a transformer T, a capacitor C1, a capacitor C4 and an ammeter A, and two ends of the high-frequency power supply HF are connected with two ends of a primary coil of the transformer T; one end of a secondary coil of the transformer is connected with one end of a capacitor C1 to one end of a load Lx, the other end of the secondary coil of the transformer is connected with an ammeter A, a capacitor C4 to the other end of the load Lx, the low-frequency power supply module comprises a low-frequency power supply LF, an inductor L1 and a capacitor C3, the low-frequency power supply LF, the inductor L1 and the load Lx are sequentially connected in series to form a loop, two ends of the low-frequency power supply LF are provided with capacitors C3 in parallel, and the load Lx is an electric reactor.
2. An ac reactor load testing circuit according to claim 1, wherein said HF power supply is connected to ground.
3. An ac reactor load testing circuit according to claim 2, wherein the supply frequency range of the high frequency power supply HF is greater than 100 KHZ.
4. The ac reactor load testing circuit of claim 1, wherein the supply frequency range of the low frequency power source LF is 1KHZ to 10 KHZ.
5. An ac reactor load testing method for use with an ac reactor load testing circuit according to any of claims 1-4, comprising the steps of:
selecting a group of m load products to become a load to be tested, and calculating the safe current range of the qualified products in the actual use process according to the design of the load;
selecting one load to be tested, and putting the load to be tested into a load test circuit;
turning on a low-frequency power supply LF or a high-frequency power supply HF as required or simultaneously turning on the low-frequency power supply LF and the high-frequency power supply HF, so that a current I2 generated by the low-frequency power supply LF and a current I1 generated by the high-frequency power supply HF simultaneously pass through a load Lx;
at the moment, reading records of an observation ammeter A are recorded to obtain data I;
selecting a plurality of loads to be tested from the rest products in the same group of products, replacing the loads to be tested, and repeating the processes respectively to obtain data II and data N;
comparing the data I, the data II and the data N with the safe current, and recording the data higher or lower than the safe current range, wherein the number of the data is N; the qualification rate of the reorganized product is calculated through a formula 1-n/m.
6. The method for testing the load of the alternating current reactor as claimed in claim 5, wherein one of the loads to be tested is selected, and the load to be tested is put into a load test circuit, wherein a thermometer is mounted on the load to be tested, and the temperature change trend of the load to be tested can be recorded.
7. The method according to claim 5, wherein a decibel meter is placed near the load to be tested, and records the decibel of the peak noise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010118118.XA CN111157828B (en) | 2020-02-26 | 2020-02-26 | Load test circuit and test method for alternating current reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010118118.XA CN111157828B (en) | 2020-02-26 | 2020-02-26 | Load test circuit and test method for alternating current reactor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111157828A true CN111157828A (en) | 2020-05-15 |
| CN111157828B CN111157828B (en) | 2022-06-28 |
Family
ID=70566491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010118118.XA Active CN111157828B (en) | 2020-02-26 | 2020-02-26 | Load test circuit and test method for alternating current reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111157828B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101923130A (en) * | 2010-08-16 | 2010-12-22 | 中国电力科学研究院 | Special test method for saturable reactor used for converter valve |
| JP2011047784A (en) * | 2009-08-27 | 2011-03-10 | Toshiba Corp | Reactor for power and testing method thereof |
| CN102749526A (en) * | 2012-08-15 | 2012-10-24 | 中电普瑞电力工程有限公司 | Testing method for dynamic inductance of saturable reactor of direct-current converter valve |
| CN105337508A (en) * | 2015-11-14 | 2016-02-17 | 哈尔滨理工大学 | Device for testing turn-to-turn insulation of electric reactor |
| JP2018068003A (en) * | 2016-10-18 | 2018-04-26 | 住友重機械工業株式会社 | Power supply for laser, switching converter |
| CN109342826A (en) * | 2018-11-13 | 2019-02-15 | 深圳市京泉华科技股份有限公司 | Electrical sensing test-run a machine |
| CN109633323A (en) * | 2018-12-24 | 2019-04-16 | 杭州银湖电气设备有限公司 | A kind of REgulatable reactor load test system |
| CN110108956A (en) * | 2019-04-26 | 2019-08-09 | 华夏天信智能物联股份有限公司 | A kind of dedicated high frequency electric source of the capacitor testing of wide frequency ranges and its test method |
| CN210005631U (en) * | 2019-05-15 | 2020-01-31 | 哈尔滨理工大学 | Insulation online diagnosis system for air-core reactor |
-
2020
- 2020-02-26 CN CN202010118118.XA patent/CN111157828B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011047784A (en) * | 2009-08-27 | 2011-03-10 | Toshiba Corp | Reactor for power and testing method thereof |
| CN101923130A (en) * | 2010-08-16 | 2010-12-22 | 中国电力科学研究院 | Special test method for saturable reactor used for converter valve |
| CN102749526A (en) * | 2012-08-15 | 2012-10-24 | 中电普瑞电力工程有限公司 | Testing method for dynamic inductance of saturable reactor of direct-current converter valve |
| CN105337508A (en) * | 2015-11-14 | 2016-02-17 | 哈尔滨理工大学 | Device for testing turn-to-turn insulation of electric reactor |
| JP2018068003A (en) * | 2016-10-18 | 2018-04-26 | 住友重機械工業株式会社 | Power supply for laser, switching converter |
| CN109342826A (en) * | 2018-11-13 | 2019-02-15 | 深圳市京泉华科技股份有限公司 | Electrical sensing test-run a machine |
| CN109633323A (en) * | 2018-12-24 | 2019-04-16 | 杭州银湖电气设备有限公司 | A kind of REgulatable reactor load test system |
| CN110108956A (en) * | 2019-04-26 | 2019-08-09 | 华夏天信智能物联股份有限公司 | A kind of dedicated high frequency electric source of the capacitor testing of wide frequency ranges and its test method |
| CN210005631U (en) * | 2019-05-15 | 2020-01-31 | 哈尔滨理工大学 | Insulation online diagnosis system for air-core reactor |
Non-Patent Citations (2)
| Title |
|---|
| 李红元: ""GIL交流耐压带超声局放测试试验方法"", 《云南电力技术》 * |
| 魏晓亮: ""新型平波电抗器试验台微机测控系统"", 《电子技术》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111157828B (en) | 2022-06-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Grandi et al. | Stray capacitances of single-layer solenoid air-core inductors | |
| Campi et al. | Near-field reduction in a wireless power transfer system using LCC compensation | |
| da Silva Costa et al. | Coupling for power line communications: A survey | |
| Hashemnia et al. | Improved power transformer winding fault detection using FRA diagnostics–part 2: radial deformation simulation | |
| Ludwikowski et al. | Investigation of transformer model winding deformation using sweep frequency response analysis | |
| Shafiq et al. | Effect of geometrical parameters on high frequency performance of Rogowski coil for partial discharge measurements | |
| Wu et al. | A new testing method for the diagnosis of winding faults in transformer | |
| CN107064691A (en) | A kind of high frequency voltage is superimposed the cable accessory ageing test apparatus of power current | |
| Bagheri et al. | Air core transformer winding disk deformation: A precise study on mutual inductance variation and its influence on frequency response spectrum | |
| Song et al. | A high-density single-turn inductor for a 6 kV SiC-based power electronics building block | |
| Rajamani et al. | Interturn short diagnosis in small transformers through impulse injection: on‐line on‐load self‐impedance transfer function approach | |
| Su et al. | Extended theory on the inductance calculation ofPlanar spiral windings including the effectof double-layer electromagnetic shield | |
| Udayanga et al. | Permeance based model for the coupled-inductor utilized in the supercapacitor assisted surge absorber (SCASA) and its experimental validation | |
| Lu et al. | Effects of converter harmonic voltages on transformer insulation ageing and an online monitoring method for interlayer insulation | |
| Al-Dori et al. | Comprehensive analysis of losses and leakage reactance of distribution transformers | |
| CN111157828B (en) | Load test circuit and test method for alternating current reactor | |
| Bagheri et al. | Transformer frequency response: a new technique to analyze and distinguish the low-frequency band in the frequency response analysis spectrum | |
| Luo et al. | Recognition technology of winding deformation based on principal components of transfer function characteristics and artificial neural network | |
| Kovačević et al. | PEEC-based virtual design of EMI input filters | |
| CN112710879B (en) | Multiple harmonic wave superposition current generation device and method for temperature rise test | |
| Cruciani et al. | Assessment of magnetic field levels generated by a wireless power transfer (WPT) system at 20 kHz | |
| CN113391243A (en) | Transformer winding material nondestructive identification method based on harmonic resistance measurement | |
| Jeong et al. | A pattern-based fault classification algorithm for distribution transformers | |
| Nurmanova et al. | Simulation and analysis of transformer winding inter-disk and inter-turn faults for online diagnosis | |
| Duppalli | Design methodology for a high-frequency transformer in an isolating dc-dc converter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |