CN2506011Y - Three phase AC power source phase sequence automatic monitoring device - Google Patents
Three phase AC power source phase sequence automatic monitoring device Download PDFInfo
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- CN2506011Y CN2506011Y CN 01260647 CN01260647U CN2506011Y CN 2506011 Y CN2506011 Y CN 2506011Y CN 01260647 CN01260647 CN 01260647 CN 01260647 U CN01260647 U CN 01260647U CN 2506011 Y CN2506011 Y CN 2506011Y
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Abstract
The utility model relates to a three-phase AC power source monitoring device, in particular to a three-phase AC power source phase sequence automatic monitoring device which comprises a phase sequence monitoring part, a lack phase monitoring part, an overpressure lack pressure monitoring part, a three-phase power source monitoring part and a work state display part. The whole body is arranged inside a shell. A front plate of the shell displays the work state. A back plate of the shell is the input terminator and output terminator. The device has the advantages of simple structure, small volume and full functions. The fault of the three-phase AC power source overpressure, lack pressure and lack phase can be alarmed and automatically adjusted; therefore, the normal power supply state of the three-phase AC power source is guaranteed. The normal power supply state of the three phase AC power source is not burnt down or stopped because of the wrong power source phase sequence.
Description
The utility model relates to a kind of monitor device of three-phase alternating-current supply, is specially three-phase alternating-current supply phase sequence automatic monitoring regulation device.
The monitor device of at present existing three-phase alternating-current supply mostly is alarm device greatly, and its function is that alarm shows overvoltage, under-voltage, and phase shortage and phase sequence are differentiated and phase shortage is reported to the police.Can not carry out the automatic monitoring regulation and control.Therefore can not satisfy requirement and the needs of various power consumption equipments to power grid quality.
The purpose of this utility model is to propose a kind of three-phase alternating-current supply phase sequence automatic monitoring regulation device, this device can not only be to phase sequence, overvoltage, under-voltage, the phase shortage warning of three-phase alternating-current supply, and energy automatic monitoring adjustment, guarantee that three-phase alternating-current supply remains on correct power supply state always, or the needed power supply state of user.The incorrect problems such as electric equipment cisco unity malfunction or burning apparatus that cause of phase sequence that multiple reasons such as too high owing to supply voltage, low excessively, phase shortage cause have been solved simultaneously.
The utility model major technique content is, this three-phase alternating-current supply phase sequence automatic monitoring regulation device, is made of phase sequence monitoring part, phase shortage monitoring part, over-and under-voltage monitoring part, three phase mains regulation and control output, operating state display part; Phase sequence monitoring part is by piezo-resistance TR
1, TR
2, resistance R
7, R
8, R
9, R
10, capacitor C
3, C
4, C
5, C
6, C
7, voltage-selected switch K
1, relay J Q
1Form 3 balancing circuitrys of phase sequence, the input of the A of three phase mains, B, C three-phase, A phase and resistance R
7, R
8Be in series resistance R
9With voltage-selected switch K
1Series connection is attempted by resistance R
8On, B phase and capacitor C
3, C
4, C
5, C
6Series connection, C phase and phase preface relay J Q
1Series connection, resistance R
10With C
7Series connection is attempted by phase sequence relay JQ
1Two ends, the output of its A, B, C are connected to 1 O, relay J Q
1Contact JQ
1-1Be connected zero between pressing mutually with three phase mains regulation and control output, be connected to piezo-resistance TR respectively between A, B, the C phase
1, TR
2
Phase shortage monitoring part is to be made of lack detection circuit, phase shortage power pushing circuit and power-supply circuit, and lack detection circuit is by resistance R
1, R
2, R
3, R
4, rectifier diode D
1, light-emitting diode D
2, capacitor C
1Constitute, the input of three-phase alternating-current supply A, B, C respectively with R
1, R
2, R
3Series connection, its output in parallel and with rectifier diode D
1, resistance R
4Series connection, phase shortage indication light-emitting diode D
2With capacitor C
1Be connected in O point and rectifier diode D
2Output, the output of lack detection circuit and photoelectricity coupling circuit A
3Input 1,2 connect photoelectricity coupling circuit A
3Output 4,5 be connected with the phase shortage power pushing circuit, the phase shortage power pushing circuit is by resistance R
5, R
6, relay J Q
3, triode BG
1Constitute R
5, R
6An end and A
35 ends connect R
5The other end and relay J Q
3One end connects, JQ
3The other end and BG
1Emitter connects, BG
1Collector electrode and A
34 ends connect BG
1Base stage and R
6The other end connect rectified current routing transformer B
1, rectifier bridge D
3, three terminal regulator A
4, capacitor C
2Constitute, 220V interchange being transformed into direct voltage is supplied with the work of phase shortage power pushing circuit, relay J Q
3Normally closed contact JQ
2-1Be connected with three phase mains regulation and control output;
Over-and under-voltage monitoring part is made of sample circuit, overvoltage monitoring circuit, under-voltage monitoring circuit, and sample circuit is by three-phase concatenation type transformer B
2With rectification circuit D
4Constitute three-phase concatenation type transformer B
2Coil L
a, L
b, L
cBe coupled its output and rectifier bridge D respectively with three phase mains A, B, C
4Input connect the output of rectifier bridge and capacitor C
8With overvoltage adjustable resistance W
1, under-voltage adjustment resistance W
2Parallel connection, overvoltage monitoring circuit is by little power consumption voltage detecting circuit A
1With overvoltage adjustable resistance W
1, resistance R
12Constitute A
12. end and overvoltage adjustable resistance W
1Adjustable end connect A
1Output 1. with R
12Connect R
12Another termination XOR gate T
1B end, A
13. ground connection; Under-voltage monitoring circuit is by little power consumption voltage detecting circuit A
2, adjustable resistance W
2, resistance R
14Form little power consumption voltage detecting circuit A
2Input 2. with under-voltage adjustable resistance W
2Adjustable end connect A
2Output 1. with resistance R
14One end connects, R
14The other end and XOR gate A end is connected, electrical equipment JQ is succeeded in the output NAND gate input connection of XOR gate between non-gate output terminal and the ground
2Contact JQ
2-1Be connected with three phase mains regulation and control output;
Three phase mains regulation and control output is by relay J C
1, JC
2, contact JC
1-1, JC
1-2, JC
2-1, JC
2-2, auxiliary contact JC
1-3, JC
2-3, and JQ
1Contact JQ
1-1, JQ
2Contact JQ
2-1, JQ
3Contact JQ
3-1Form relay J C
2With JC
1-3, JQ
1-1, JQ
2-1JQ
3-1Series connection, two are terminated at three-phase power output end zero with mutually between the pressure, JC
1-1, JC
2-1Parallel connection is connected JC with three-phase power input end A
1-2, JC
2-2Parallel connection is connected other end JC with three-phase power input end B
1-1, JC
2-2Output in parallel, JC
1-2, JC
2-1Output in parallel is respectively three-phase power output end;
The operating state display part is by light-emitting diode D
5, D
6, D
7, resistance R
15, relay J Q
1Contact JQ1-2, the contact JQ2-2 of JQ2 forms, contact JQ1-2, JQ2-2 and light-emitting diode D
7One end connects ground connection, and the other end of JQ1-2 is connected with light-emitting diode D5, the JQ2-2 other end and light-emitting diode D
6Connect diode D
5, D
6Resistance R is passed through in the other end and connection
15Connect phase voltage.
Whole device is contained in the housing, and front panel display working condition, rear board are provided with input terminal A, B, C, 0 lead-out terminal a, b, c, 0.
The operation principle of three-phase alternating-current supply phase sequence automatic monitoring regulation device:
After at first three-phase alternating-current supply enters this device, insert phase sequence monitoring, phase shortage monitoring, over-and under-voltage monitoring part respectively.
1; after three-phase alternating-current supply enters phase shortage monitoring part; be connected into the simulation three phase symmetry load by resistance R 1-R3 by the Y-connection mode; at ordinary times; the three-phase voltage of balance passes through A; B; the C contact is added on the simulation three phase symmetry load resistance R 1-R3; according to principles of electric and electronic engineering resistance R 1-R3 common junction over the ground (neutral line) O voltage of ordering be zero; make that light-emitting diode can not be luminous among the A3; as three-phase alternating voltage A; B; among the C wherein when a phase phase shortage or the phase failure resistance R 1-R3 common junction voltage over the ground be half of three-phase line voltage; common junction (neutral line) 0 point voltage over the ground is 190V; voltage passes through the D1 halfwave rectifier after R4 to A3 photoelectric coupling circuit; built-in luminous tube is lighted; the built-in photosensitive tube conducting of A3 this moment 5. pin is electronegative potential; the base stage of BG1 is an electronegative potential; BG1 conducting JQ3 adhesive; normally closed often the becoming of contact JQ3-1 that is serially connected in the JQ3 in the JC relay coil opens, and makes the JC relay coil not have voltage to pass through can not work (phase shortage is protected).
2, the over-and under-voltage monitoring is partly:
Over-and under-voltage monitoring circuit is shown in the III among Fig. 1, and the La among the B2, Lb, Lc are the three-phase series transformer, and the voltage of output is exported the direct voltage of about 10V after D1-D4 bridge rectifier and C8 filtering.This voltage one side is as the sampling voltage of city's electro-mechanical wave, by being added to the input of voltage detecting circuit A1 and A2 behind W1 and the W2 respectively, on the other hand again as the operating voltage of circuit self, at ordinary times supply voltage just often A1 2. pin voltage be lower than 4.75V, its output 1. pin is in low level, in like manner of A2 2. pin voltage be higher than 4.75V, its the 1. pin be in high level to XOR gate input B end and be high level, the C8 output voltage changes thereupon when mains voltage variations, if the input voltage of voltage higher (overvoltage) A1 will surpass its detection voltage, be higher than 4.75V, thereby make the output of A1 1. transfer high level to by low level, when and for example supply voltage is on the low side (under-voltage), though A1 output does not change, but the input of A2 2. voltage is reduced to below the detection voltage 4.75V, and 1. the A2 output becomes low level by high level.
When three phase mains just often: when 2. the little power consumption voltage detecting circuit of A1 overvoltage input was " 0 " current potential, 1. output was " 0 " current potential, a of XOR gate T1 end " 0 " current potential, the T2 not gate is output as electronegative potential.
2. the under-voltage little power consumption voltage detecting circuit input of A2 is " 1 " current potential simultaneously, 1. output is " 1 " current potential, b end " 1 " current potential of XOR gate T1, the T2 not gate is output as electronegative potential, T2 not gate output electronegative potential JQ2 does not work, and is connected in normally closed being failure to actuate of JQ2 contact JQ2-1 in JC1, the JC2 coil.
When the three phase mains overvoltage: when 2. the little power consumption voltage detecting circuit of A1 overvoltage input was " 1 " current potential, 1. output was " 1 " current potential, a end " 1 " current potential of XOR gate T1, and the T2 not gate is input as " 1 " current potential.
2. the under-voltage little power consumption voltage detecting circuit input of A2 is " 1 " current potential simultaneously; 1. output is " 1 " current potential; b end " 1 " current potential of XOR gate T1; the T2 not gate is input as " 1 " current potential; non-gate output terminal output " 1 " current potential JQ2 work; normally closed often the switching to of JQ2 contact JQ2-1 that is serially connected in JC1, the JC2 coil opened, and JC1, JC2 coil circuit are off-state (overvoltage is protected) at this moment.
When three phase mains was under-voltage: when 2. the little power consumption voltage detecting circuit of A1 overvoltage input was " 0 " current potential, 1. output was " 0 " current potential, a end " 0 " current potential of XOR gate T1, and the T2 not gate is input as " 0 " current potential.
2. the under-voltage little power consumption voltage detecting circuit input of A2 is " 0 " current potential simultaneously; 1. output is " 0 " current potential; b end " 0 " current potential of XOR gate T1; the T2 not gate is input as " 0 " current potential; non-gate output terminal output " 1 " current potential JQ2 work; normally closed often the switching to of JQ2 contact JQ2-1 that is serially connected in JC1, the JC2 coil opened, and JC1, JC2 coil circuit are off-state (under-voltage being protected) at this moment.
Because the JQ1 contact JQ1-1 in the phase sequence monitoring circuit is serially connected in JC1, in the JC2 coil, when phase sequence monitoring electric circuit inspection when network electric power is negative phase sequence, JC1, the JC2 A.C. contactor is adjusted phase sequence, at first to satisfy three conditions, 1, not overvoltage 2, not under-voltage 3, phase shortage not, after satisfying three conditions, be serially connected in JC1, JQ2 in the JC2 coil, JQ3 contact JQ2-2, JQ3-1 is in normally closed state, that is to say when three kinds of conditions wherein one as phase shortage, BG1 opens by normally closed often the switching to of JQ3 adhesive JQ3, and JC1 or JQ2 relay coil loop disconnect, and JC1 or JQ2 can not work, the output of three-phase alternating-current supply does not have output voltage, in not overvoltage, not under-voltage, not under the situation of phase shortage, when phase sequence changes, phase sequence monitoring testing circuit provides signal JQ1 work, makes to be serially connected in JC1, JQ1-1 in the JC2 coil switches, thereby as switching to JC2 from JC1 or switching to JC1 from JC2 package unit work is finished.
Technique effect of the present utility model is; this three-phase alternating-current supply phase sequence automatic monitoring regulation device is structurally by phase sequence monitoring part; phase shortage monitoring part; over-and under-voltage monitoring part; three phase mains regulation and control output and operating state display part are formed; therefore; multiple functional can not only be to the three-phase alternating-current supply overvoltage; under-voltage; owe phase; faults such as phase shortage are alarmed demonstration; and can adjust automatically; guarantee that three-phase alternating-current supply remains normal power supply state; thereby guaranteed the power consumption equipment operate as normal of three phase mains; can be because of mains fluctuations, phase shortage causes burning apparatus or reason causes faults such as equipment downtime because of power phase is incorrect etc.This apparatus structure is simple, and is easy to use, can be used in the electric equipment of various use three phase mains.
Fig. 1 is the utility model circuit theory diagrams
Fig. 2 is the utility model casing front-panel structure schematic diagram
Fig. 3 is the utility model casing rear panel structure schematic diagram
I phase sequence monitoring part, II phase shortage monitoring part, III over-and under-voltage monitoring part, IV three phase mains regulation and control output, V operating state display part, ABC three-phase power input end, abc three-phase power output end, O terminal, R
1-R
17Resistance, C
1-C
8Electric capacity, D
1Rectifier diode, D
2D
5D
6D
7Light-emitting diode, D
3D
4Rectifier bridge, JQ
1, JQ2, JQ
3Relay, JC
1, JC
2Relay, JQ
1-1, JQ
1-2, JQ
2-1, JQ
2-2, JQ
3-1Relay tip, JC
1-1, JC
1-2, JC
1-3, JC
2-1, JC
2-2, relay tip.A
1The power supply monitoring integrated circuit, A
2The current monitoring integrated circuit, A
3The photoelectricity coupling circuit, T
1XOR gate, T
2Not gate, B
1Transformer, B
2Three-phase concatenation type transformer, K
1The phase sequence voltage-selected switch, W
1W
2Adjustable resistance, TR
1TR
2Piezo-resistance.
Realize embodiment of the present utility model as shown in the figure, this three-phase alternating-current supply phase sequence automatic monitoring regulation device is a shell structure, form by phase sequence monitoring part I, phase shortage monitoring part II, over-and under-voltage monitoring part III, three phase mains regulation and control output IV, operating state display part V, be loaded in the housing, housing front panel display working condition is equipped with light-emitting diode D
2D
5D
6D
7Phase sequence voltage-selected switch and digital display voltage ammeter, housing rear board are equipped with the sub-ABC of three-phase power input end and sub-abc of three-phase power output end and O terminal.
Claims (1)
1, three-phase alternating-current supply phase sequence automatic monitoring regulation device is characterized in that being made of phase sequence monitoring part, phase shortage monitoring part, over-and under-voltage monitoring part, three phase mains regulation and control output, operating state display part; Phase sequence monitoring part is by piezo-resistance (TR
1), (TR
2), resistance (R
7), (R
8), (R
9), (R
10), electric capacity (C
3), (C
4), (C
5), (C
6), (C
7), voltage-selected switch (K
1), relay (JQ
1) form 3 balancing circuitrys of phase sequence, the input of (A) in three-phase alternating current source, (B), (C) three-phase is (A) with resistance (R
7), (R
8) be in series (R
9) and voltage-selected switch (K
1) string is attempted by resistance (R
8) on, (B) with electric capacity (C
1), (C
3), (C
4), (C
5), (C
6) series connection, (C) phase and phase preface relay (JQ
1) series connection, resistance (R
10) and (C
7) connecting is attempted by phase sequence relay (JQ
1) two ends, the output of its (A), (B), (C) is connected to a bit (O), relay (JQ
1) contact (JQ
1-1) is connected with three phase mains regulation and control output, between the line pressure, be connected to piezo-resistance (TR respectively between (B), (C) phase
1), (TR
2);
Phase shortage monitoring part is to be made of lack detection circuit, phase shortage power pushing circuit and power-supply circuit, and lack detection circuit is by resistance (R
1), (R
2), (R
3), (R
4), rectifier diode (D
1), light-emitting diode (D
2), electric capacity (C
1) constitute, the input of three-phase alternating-current supply (A), (B), (C) respectively with (R
1), (R
2), (R
3) series connection, its output in parallel and with rectifier diode (D
1), resistance (R
4) series connection, phase shortage indication light-emitting diode (D
2) and electric capacity (C
1) be connected in (O) point and rectifier diode (D
2) output, the output of lack detection circuit and photoelectricity coupling circuit (A
3) input 1,2 connect photoelectricity coupling circuit (A
3) output 4,5 be connected with the phase shortage power pushing circuit, the phase shortage power pushing circuit is by resistance (R
5), (R
6), relay (JQ
3), triode (GB
1) constitute (R
5), (R
6) an end and (A
3) 5 ends connect (R
5) the other end and relay (JQ
3) end connection, (JQ
3) other end and (GB
1) the emitter connection, (GB
1) collector electrode and (A
3) 4 ends connect (GB
1) base stage and (R
6) the other end connect rectified current routing transformer (B
1), rectifier bridge (D
3), three terminal regulator (A
4), electric capacity (C
2) constitute, 220V interchange being transformed into direct voltage is supplied with the work of phase shortage power pushing circuit, relay (JQ
3) normally closed contact (JQ
2-1) be connected with three phase mains regulation and control output;
Over-and under-voltage monitoring part is made of sample circuit, overvoltage monitoring circuit, under-voltage monitoring circuit, and sample circuit is by three-phase concatenation type transformer (B
2) and rectification circuit (D
4) constitute three-phase concatenation type transformer (B
2) coil (L
a), (L
b), (L
c) be coupled its output and rectifier bridge (D respectively with three phase mains (A), (B), (C)
4) input connect the output of rectifier bridge and electric capacity (C
8) and overvoltage adjustable resistance (W
1), under-voltage adjustment resistance (W
2) parallel connection, overvoltage monitoring circuit is by little power consumption voltage detecting circuit (A
1) and overvoltage adjustable resistance (W
1), resistance (R
12) constitute (A
1) 2. end and overvoltage adjustable resistance (W
1) adjustable end connect (A
1) output 1. with (R
12) connect (R
12) another termination XOR gate (T
1) (B) end, (A
1) 3. ground connection: under-voltage monitoring circuit is by little power consumption voltage detecting circuit (A
2), adjustable resistance (W
2), resistance (R1
4) form little power consumption voltage detecting circuit (A
2) input 2. with under-voltage adjustable resistance (W
2) adjustable end connect (A
2) output 1. with resistance (R
14) end connection, (R
14) the other end and XOR gate (A) end is connected, electrical equipment (JQ is succeeded in the output NAND gate input connection of XOR gate between non-gate output terminal and the ground
2), (JQ
1) meet (JQ
2-1) be connected with three phase mains regulation and control output;
Three phase mains regulation and control output is by relay (JC
1), (JC
2), contact (JC
1-1), (JC
1-2), (JC
2-1), (JC
2-2), auxiliary contact (JC
1-3), (JC
2-3) and (JQ
1) contact (JQ
1-1), (JQ
2) contact (JQ
2-1), (JQ
3) contact (JQ
3-1) form relay (JC
2) and (JC
1-3), (JQ
1-1), (JQ
2-1) (JQ
3-1) series connection, two are terminated between the three-phase power output end line pressure (JC
1-1), (JC
2-1) in parallel be connected (JC with three-phase power input end (A)
1-2), (JC
2-2) in parallel be connected the other end (JC with three-phase power input end (B)
1-1), (JC
2-2) parallel connection is exported, (JC
1-2), (JC
2-1) output in parallel, be respectively three-phase power output end;
The operating state display part is by light-emitting diode (D
5), (D
6), (D
7), resistance (K
15), relay (JQ
1) contact (JQ1
-2), (JQ
2) contact (JQ
2-2) form contact (JQ
1-2), (JQ
2-2) and light-emitting diode (D
7) end connection ground connection, (JQ
1-2) the other end be connected (JQ with light-emitting diode (D5)
2-2) other end and light-emitting diode (D
6) connect diode (D
5), (D
6) other end and connecting by resistance (R
15) connect phase voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01260647 CN2506011Y (en) | 2001-09-11 | 2001-09-11 | Three phase AC power source phase sequence automatic monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01260647 CN2506011Y (en) | 2001-09-11 | 2001-09-11 | Three phase AC power source phase sequence automatic monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2506011Y true CN2506011Y (en) | 2002-08-14 |
Family
ID=33668749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01260647 Expired - Fee Related CN2506011Y (en) | 2001-09-11 | 2001-09-11 | Three phase AC power source phase sequence automatic monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2506011Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI399025B (en) * | 2007-12-14 | 2013-06-11 | Hon Hai Prec Ind Co Ltd | Switch circuit of three-phase alternating-current power supply |
| CN105150863A (en) * | 2015-08-27 | 2015-12-16 | 株洲南车时代电气股份有限公司 | Connection device for external power source of railway vehicle |
| CN107900491A (en) * | 2017-12-19 | 2018-04-13 | 宁波欧罗巴焊割科技有限公司 | A kind of welding machine open-phase protection control circuit |
| CN110837044A (en) * | 2019-10-14 | 2020-02-25 | 中国北方发动机研究所(天津) | Hybrid power motor driving frequency voltage detection circuit |
-
2001
- 2001-09-11 CN CN 01260647 patent/CN2506011Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI399025B (en) * | 2007-12-14 | 2013-06-11 | Hon Hai Prec Ind Co Ltd | Switch circuit of three-phase alternating-current power supply |
| CN105150863A (en) * | 2015-08-27 | 2015-12-16 | 株洲南车时代电气股份有限公司 | Connection device for external power source of railway vehicle |
| CN105150863B (en) * | 2015-08-27 | 2017-06-23 | 株洲南车时代电气股份有限公司 | A kind of rolling stock external power source access device |
| CN107900491A (en) * | 2017-12-19 | 2018-04-13 | 宁波欧罗巴焊割科技有限公司 | A kind of welding machine open-phase protection control circuit |
| CN107900491B (en) * | 2017-12-19 | 2024-04-26 | 宁波欧罗巴科技有限公司 | Open-phase protection control circuit of welding machine |
| CN110837044A (en) * | 2019-10-14 | 2020-02-25 | 中国北方发动机研究所(天津) | Hybrid power motor driving frequency voltage detection circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20020814 Termination date: 20090911 |