CN105977912B - A kind of electric harmonic detection device - Google Patents
A kind of electric harmonic detection device Download PDFInfo
- Publication number
- CN105977912B CN105977912B CN201610279072.3A CN201610279072A CN105977912B CN 105977912 B CN105977912 B CN 105977912B CN 201610279072 A CN201610279072 A CN 201610279072A CN 105977912 B CN105977912 B CN 105977912B
- Authority
- CN
- China
- Prior art keywords
- inductance
- rectifier
- contactor
- button switch
- silicon
- 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.)
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Links
- 238000001514 detection method Methods 0.000 title claims abstract description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 20
- 239000010703 silicon Substances 0.000 claims abstract description 20
- 239000003381 stabilizer Substances 0.000 claims abstract description 12
- 230000006698 induction Effects 0.000 claims abstract description 4
- 230000005611 electricity Effects 0.000 claims description 3
- 238000010304 firing Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/50—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to the appearance of abnormal wave forms, e.g. ac in dc installations
- H02H3/52—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to the appearance of abnormal wave forms, e.g. ac in dc installations responsive to the appearance of harmonics
Abstract
The invention discloses a kind of electric harmonic detection devices,Including the first inductance to third inductance,First rectifier,Second rectifier,Capacitance,Voltage-stabiliser tube,It is silicon-controlled,First button switch,Second button switch and contactor,First inductance to third inductance coil is sleeved on power cable,When thering is electric current to pass through in power cable,Electric current is generated using inductance,Electric current exports after the first rectifier rectification to SCR control end,When electric harmonic is excessive,When electric current reaches silicon-controlled firing point,Controlled silicon conducting,The control switch for making the second rectifier current output that contactor be made to disconnect contactor,Compared with prior art,The present invention passes through the electric harmonic on inductance induction power cable,When the electric harmonic intensity of generation is excessive,Automatically controlling contactor makes electric power disconnect automatically,To achieve the purpose that detection and protection,It is easy to use,It has the value of popularization and application.
Description
Technical field
The present invention relates to a kind of electric power detection device more particularly to a kind of electric harmonic detection devices.
Background technology
Since AC network active constituent is power frequency single-frequency, any ingredient different from work frequency can
Referred to as harmonic wave.Since sinusoidal voltage stresses on nonlinear load, fundamental current is distorted generation harmonic wave.Predominant non-linearity is negative
It is loaded with UPS, Switching Power Supply, rectifier, frequency converter, inverter etc..In the prior art, it is detected for the electric harmonic of three-phase power
Testing result is inaccurate, and does not automatically control the function of open circuit, and accordingly, there exist rooms for improvement.
Invention content
The purpose of the present invention is that solve the above-mentioned problems and provides a kind of electric harmonic detection device.
The present invention is achieved through the following technical solutions above-mentioned purpose：
The present invention includes the first inductance to third inductance, the first rectifier, the second rectifier, capacitance, voltage-stabiliser tube, controllable
Silicon, the first button switch, the second button switch and contactor, first inductance, second inductance and the third inductance
It is connect respectively with three cable inductions of three phase mains, first inductance to the third inductance series connection connects, after series connection
First inductance connect to the both ends of third inductance with two input terminals of first rectifier, second rectifier
Two input terminals be connected in the arbitrary two-phase of three phase mains by second button switch and the contactor respectively, institute
The normally closed switch for stating contactor is connected on three phase mains, the cathode output end of first rectifier simultaneously with the capacitance
First end, the voltage-stabiliser tube cathode connected with the silicon-controlled control terminal, the cathode output end of first rectifier is same
When with the second end of the capacitance, positive, the described silicon-controlled cathode of the voltage-stabiliser tube, first button switch first
End connect with the cathode of second rectifier, the anode of second rectifier and meanwhile with it is described silicon-controlled positive and described
The second end of first button switch connects.
The beneficial effects of the present invention are：
The present invention is a kind of electric harmonic detection device, and compared with prior art, the present invention passes through the inductance induced electricity line of force
Electric harmonic on cable, when the electric harmonic intensity of generation is excessive, automatically controlling contactor makes electric power disconnect automatically, to reach
It is easy to use to the purpose of detection and protection, it has the value of popularization and application.
Description of the drawings
Fig. 1 is the circuit structure schematic diagram of the present invention.
Specific implementation mode
The invention will be further described below in conjunction with the accompanying drawings：
As shown in Figure 1：The present invention includes the first inductance L1 to third inductance L3, the first rectifier DR1, the second rectifier
DR2, capacitance C, voltage-stabiliser tube DW, controllable silicon SCR, the first button switch AN1, the second button switch AN2 and contactor, the first inductance
L1, the second inductance L2 and third inductance L3 are connect with three cable inductions of three phase mains respectively, the first inductance L1 to third electricity
Feel series connection connection, two input terminals of the first inductance L1 after series connection to the both ends of third inductance L3 and the first rectifier DR1
Connection, two input terminals of the second rectifier DR2 are connected to three phase mains by the second button switch AN2 and contactor KM respectively
Arbitrary two-phase on, the normally closed switch KM1 of contactor is connected on three phase mains, and the cathode output end of the first rectifier DR1 is same
When connect with the control terminal of the first end of capacitance C, the cathode of voltage-stabiliser tube DW and controllable silicon SCR, the cathode of the first rectifier DR1 is defeated
Outlet simultaneously with the second end of capacitance C, the anode of voltage-stabiliser tube DW, the cathode of controllable silicon SCR, the first button switch AN1 first
End is connected with the cathode of the second rectifier DR2, and the anode of the second rectifier DR2 is pressed with the anode of controllable silicon SCR and first simultaneously
The second end of button switch AN1 connects.
First inductance L1 to third inductance L3 mounting coils have on power cable, in power cable electric current by when, make
Electric current is generated with inductance, electric current exports after the first rectifier DR1 rectifications to controllable silicon SCR control terminal, when electric harmonic mistake
When big, when electric current reaches the firing point of controllable silicon SCR, controllable silicon SCR conducting makes the second rectifier DR2 output currents make contact
Device KM disconnects the normally closed switch KM1 of contactor, and manual depression of button switch AN1 can disconnect the power supply of power cable, press second
Button switch AN2 then resets.
Capacitance C is that 300uf, voltage-stabiliser tube DW models 2CW1, the first rectifier DR1 and the second rectifier DR2 models are
IN4001, controllable silicon SCR model KP1A/800V, the first inductance L1 to third inductance L3 are that 5 circle of 2mm coilings forms.
The basic principles and main features and advantages of the present invention of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (1)
1. a kind of electric harmonic detection device, it is characterised in that：Including the first inductance, the second inductance, third inductance, the first rectification
Device, the second rectifier, capacitance, voltage-stabiliser tube, silicon-controlled, the first button switch, the second button switch and contactor, first electricity
Sense, second inductance and the third inductance are connect with three cable inductions of three phase mains respectively, and first inductance is extremely
The third inductance series connection connects, first inductance after series connection to the both ends of third inductance and first rectifier
Two input terminal connections, two input terminals of second rectifier pass through second button switch and the contactor respectively
It is connected in the arbitrary two-phase of three phase mains, the normally closed switch of the contactor is connected on three phase mains, first rectification
The cathode output end of device connects with the first end of the capacitance, the cathode of the voltage-stabiliser tube and the silicon-controlled control terminal simultaneously
Connect, the cathode output end of first rectifier simultaneously with the second end of the capacitance, the voltage-stabiliser tube it is positive, described controllable
The cathode of silicon, first button switch first end connected with the cathode of second rectifier, second rectifier
Anode is connect with the second end of the silicon-controlled anode and first button switch simultaneously；
Capacitance C is that 300uf, voltage-stabiliser tube DW models 2CW1, the first rectifier DR1 and the second rectifier DR2 models are
IN4001, controllable silicon SCR model KP1A/800V, the first inductance L1 to third inductance L3 are that 5 circle of 2mm coilings forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610279072.3A CN105977912B (en) | 2016-04-28 | 2016-04-28 | A kind of electric harmonic detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610279072.3A CN105977912B (en) | 2016-04-28 | 2016-04-28 | A kind of electric harmonic detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105977912A CN105977912A (en) | 2016-09-28 |
| CN105977912B true CN105977912B (en) | 2018-09-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610279072.3A Active CN105977912B (en) | 2016-04-28 | 2016-04-28 | A kind of electric harmonic detection device |
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| Country | Link |
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| CN (1) | CN105977912B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111327019A (en) * | 2020-03-10 | 2020-06-23 | 郑州航空工业管理学院 | Electronic automatic switch |
Citations (12)
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| US4783713A (en) * | 1986-08-29 | 1988-11-08 | Cezhan Chen | Full automatic electric shock protector apparatus |
| CN2078501U (en) * | 1990-09-29 | 1991-06-05 | 徐国治 | Open phase over-current protector for motor |
| CN1063780A (en) * | 1991-01-30 | 1992-08-19 | 郑州工学院 | Multi-purpose solid phase-cut off relay |
| CN2278293Y (en) * | 1996-12-30 | 1998-04-08 | 叶秦生 | Three-phase motor end energy-saving safety operation device |
| CN1705180A (en) * | 2004-05-27 | 2005-12-07 | 广州智光电气有限公司 | Three-core five-post grounding current automatic tracking and compensation system |
| CN101179191A (en) * | 2007-11-07 | 2008-05-14 | 北京四方继保自动化股份有限公司 | Method for protector to detect disconnection of neutral line using third harmonic |
| CN201252392Y (en) * | 2008-09-09 | 2009-06-03 | 符婵 | Earth-leakage protector |
| CN201478793U (en) * | 2009-09-01 | 2010-05-19 | 王笑丽 | Circuit breaker |
| CN102243283A (en) * | 2011-04-02 | 2011-11-16 | 宁波电业局 | Neutral line breakage detection method of voltage secondary loop and apparatus thereof |
| CN103532358A (en) * | 2013-10-16 | 2014-01-22 | 廊坊英博电气有限公司 | Silicon controlled voltage regulation device capable of inhibiting harmonic waves |
| CN204967236U (en) * | 2015-10-15 | 2016-01-13 | 浙江天正电气股份有限公司 | Leakage protector |
| CN205646771U (en) * | 2016-04-28 | 2016-10-12 | 郑州航空工业管理学院 | Electric power harmonic detection device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2542494C2 (en) * | 2010-07-19 | 2015-02-20 | Абб Текнолоджи Аг | Device and method for detection of ground short-circuit |
-
2016
- 2016-04-28 CN CN201610279072.3A patent/CN105977912B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4783713A (en) * | 1986-08-29 | 1988-11-08 | Cezhan Chen | Full automatic electric shock protector apparatus |
| CN2078501U (en) * | 1990-09-29 | 1991-06-05 | 徐国治 | Open phase over-current protector for motor |
| CN1063780A (en) * | 1991-01-30 | 1992-08-19 | 郑州工学院 | Multi-purpose solid phase-cut off relay |
| CN2278293Y (en) * | 1996-12-30 | 1998-04-08 | 叶秦生 | Three-phase motor end energy-saving safety operation device |
| CN1705180A (en) * | 2004-05-27 | 2005-12-07 | 广州智光电气有限公司 | Three-core five-post grounding current automatic tracking and compensation system |
| CN101179191A (en) * | 2007-11-07 | 2008-05-14 | 北京四方继保自动化股份有限公司 | Method for protector to detect disconnection of neutral line using third harmonic |
| CN201252392Y (en) * | 2008-09-09 | 2009-06-03 | 符婵 | Earth-leakage protector |
| CN201478793U (en) * | 2009-09-01 | 2010-05-19 | 王笑丽 | Circuit breaker |
| CN102243283A (en) * | 2011-04-02 | 2011-11-16 | 宁波电业局 | Neutral line breakage detection method of voltage secondary loop and apparatus thereof |
| CN103532358A (en) * | 2013-10-16 | 2014-01-22 | 廊坊英博电气有限公司 | Silicon controlled voltage regulation device capable of inhibiting harmonic waves |
| CN204967236U (en) * | 2015-10-15 | 2016-01-13 | 浙江天正电气股份有限公司 | Leakage protector |
| CN205646771U (en) * | 2016-04-28 | 2016-10-12 | 郑州航空工业管理学院 | Electric power harmonic detection device |
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| Publication number | Publication date |
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| CN105977912A (en) | 2016-09-28 |
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