CN104749479B - A kind of elevator supply open phase detection method and its detection means - Google Patents
A kind of elevator supply open phase detection method and its detection means Download PDFInfo
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- CN104749479B CN104749479B CN201310753715.XA CN201310753715A CN104749479B CN 104749479 B CN104749479 B CN 104749479B CN 201310753715 A CN201310753715 A CN 201310753715A CN 104749479 B CN104749479 B CN 104749479B
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Abstract
A kind of elevator supply open phase detection method and its detection means, testing result is exported by relay J adhesive and release conditions, L1 L3 using three phase mains are circuit power supply, and its power circuit forms the detection function for L1 phases occurring with L3 phases open phase fault in itself；Detection to L2 phases uses the detection circuit based on optocoupler application technology, and the L2 L3 of access three phase mains form half-wave rectifying circuit after being connected by commutation diode D1 with current-limiting resistance R1, and C1 is filter capacitor；Optocoupler OC input light emitting diode accesses L2 L3 half-wave rectifying circuits through current-limiting resistance R2, and optocoupler OC output bidirectional triode thyristor is connected with relay J implements the control of adhesive and release.The detection method brief and practical, the circuit components quantity of detection means is few, and cost performance is higher.
Description
Technical field
The present invention relates to the safety guard of elevator supply system, is a kind of right in elevator control cabinet specifically
The detection method and its detection means of open phase fault occur for elevator power supply source.
Background technology
In view of elevator is manned special equipment, to ensure the safe for operation of elevator, to the disconnected of electric power system, fault-phase protection
It is required that higher and have strict core Check measures, the power supply of every elevator is disconnected, fault-phase protection function must be examined through quality inspection technical body
Testing qualified rear can come into operation.
Related national legislation standard is broken on elevator supply, the safety specifications of fault-phase protection have：
A. it is disconnected mutually and fault-phase protection function should to possess electric power system for elevator, when elevator supply circuit occur it is disconnected mutually or misphase
When, elevator is answered out of service and keeps halted state.
B. elevator operation is unrelated with phase sequence, can not set fault-phase protection function.
To meet above-mentioned requirements, the elevator control cabinet of prior art should all set dislocation phase protective relay.Dislocation is mutually protected
The input of shield relay is connected with elevator power supply source, and output end is connected with elevator safety circuit, running control circuit；
Detected by dislocation phase protective relay and export the disconnected of elevator power supply source, misphase fault-signal, pass through elevator safety circuit, fortune
The power supply of line control circuit cut-out driving main frame.
Existing elevator generally uses frequency control electric drive system, and application continuum electric life controller assembling elevator
The modern technologies such as switch board.Because the operation of this elevator is unrelated with phase sequence, only phase failure protection function can be set to meet
Safety specifications.
The patent retrieved in terms of open phase detection is more, and its technical scheme mainly includes following three types：
1. the change of the voltage neutral point voltage-to-ground of three phase mains is detected, the neutrality of star connection when three-phase voltage balances
Point current potential is zero；When there is open phase fault neutral point potential can significantly displacement, with voltage detecting circuit realiration pile defection.Phase
Closing patent has a kind of open phases of three-phase power source detection circuit of CN103166188A phase loss protector for three-phase, CN201616655U
Deng.
2. detecting the voltage waveform of three phase mains, to each phase power signal sampling, it is by the identification of waveform analysis circuit
It is no open-phase fault to be present, realize that power phase shortage detects, Patents have a kind of protection control of default phase of frequency converter of CN102798770A
Method processed, CN2831566Y open phases of three-phase power source protection controller etc..
3. gathering the phase voltage of three phase mains respectively, two-phase therein or three-phase voltage signal are input to and known with gate circuit
Not, when three phase mains is normal with gate circuit output high potential, there is phase shortage in a phase or two-phase or three-phase in three phase mains
With gate circuit output low potential during failure, realize that power phase shortage detects, Patents have a kind of three phase mains of CN102426302A
Input phase failure detection circuit, a kind of three-phase power input phase-loss detection circuits of CN101413975A etc..
Above-mentioned technical proposal, the component number that detection circuit uses is more, and it detects circuit and all employs the low electricity of direct current
Pressure power supply by power supply change-over device from elevator power supply source, it is necessary to obtain, the cost compared with directly using Alternating Current Power Supply scheme
It is higher.
The content of the invention
The invention aims to overcome the deficiencies in the prior art, there is provided a kind of higher elevator supply of cost performance breaks phase
Detection method and its detection means
The technical solution adopted for the present invention to solve the technical problems is：A kind of elevator supply open phase detection method, including
Occur the detection of open phase fault and output to three phase mains, comprise the following steps：
(1) testing result is exported by relay J adhesive and release conditions, relay J adhesives represent elevator supply
Without open phase fault in three phase mains；Relay J releases represent wherein a phase or two-phase or the disconnected phase of three-phase appearance in three phase mains
Failure；
(2) using the wherein two-phase L1-L3 composition relay power circuits of three phase mains, relay J adhesive and release
Controlled by electric voltage observation circuit；
(3) L2-L3 of electric voltage observation circuit connection three phase mains, when L2-L3 voltages are normal by electric voltage observation circuit control
Relay power circuit conducting processed, is ended when L2-L3 voltages lack by electric voltage observation circuit control relay power circuit；
(4) detection and output to elevator supply open phase fault is accomplished in the following manner in relay J：
A. when elevator supply is normal, relay power circuit is formed by the L1-L3 of three phase mains, through electric voltage observation circuit
It is that voltage is normal to identify L2-L3, the conducting of control relay power circuit, relay J adhesives, and it is that elevator supply is former without disconnected phase to export
Barrier；
B. when disconnected phase occur in a L2-L3 wherein phases for three phase mains or two-phase, cause in the circuit power that L2-L3 is exported
Disconnected, relay J discharges because non-transformer is powered, and export has open phase fault for elevator supply；
C. when disconnected phase occurs in the L2 of three phase mains, identify that L2-L3 voltages for exception, control relay through electric voltage observation circuit
Device power circuit ends, and relay J releases, export has open phase fault for elevator supply.
Implement the elevator supply phase interruption testing device of above-mentioned detection method, including electric voltage observation circuit, relay power electricity
Road and output relay, it is characterized in that, the coil rating voltage of the relay J is identical with the voltage of three phase mains, the electricity
Road power supply directly uses the AC power of elevator supply system, the L1 connections of relay J one end and three phase mains, and the other end passes through
The L1 of three phase mains is accessed after electric voltage observation circuit；The L2 connection electric voltage observation circuits of three phase mains, electric voltage observation circuit connect
Contact relay power circuit.
The electric voltage observation circuit is the detection circuit based on optocoupler application technology, including commutation diode D1, current limliting electricity
Hinder R1, filter capacitor C1 and optocoupler OC, current-limiting resistance R2；By R1 series connection D1 anodes, D1 negative electrodes access the L2 of three phase mains, with three
The L3 of phase power supply forms L2-L3 half-wave rectifying circuits, and C1 is the output filter capacitor of L2-L3 half-wave rectifying circuits；Optocoupler OC's
Input light emitting diode and access L2-L3 half-wave rectifying circuits through current-limiting resistance R2, optocoupler OC output is bidirectional triode thyristor.
The electric voltage observation circuit is bidirectional triode thyristor drive circuit, and its bidirectional triode thyristor is optocoupler OC output device,
Its one end connects the L3 of three phase mains, and the L1 of three phase mains, the conducting of bidirectional triode thyristor are accessed after other end SRE J
Input light emitting diode with ending by optocoupler OC, which triggers, to be controlled.
The capacity of the filter capacitor C1 is arranged to, and triggering optocoupler is maintained after open phase fault occurs in the L2 of three phase mains
OC output conducting (1/40-1/25) seconds.
The present invention compared with prior art, has advantages below and beneficial effect；
1. the circuit power supply of detection means directly uses the alternating voltage of elevator supply, it is not necessary to which Power convert fills
Put, circuit cost is reduced, and power failure rate reduces.
2. detection method brief and practical, the circuit components quantity of detection means reduces more than 50%.
3. the power consumption of detection means is smaller, power supply total current is less than 10mA, power and energy saving.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is embodiments of the invention circuit theory diagrams.
Embodiment
In Fig. 1, L1, L2, L3 are the input terminal of elevator supply three phase mains；J is miniature relay, its pull-in winding
Rated voltage is identical with power line voltage, and disconnected phase information, J attracting state tables are exported by moving together contact J-1, break contact J-2
Show three phase mains without open phase fault, J release conditions represent wherein a phase or two-phase or the disconnected mutually event of three-phase appearance in three phase mains
Barrier；OC is optocoupler, is a kind of zero cross fired bidirectional triode thyristor output optocoupler, for electric voltage observation circuit and relay driving electricity
Road.
It is working power that relay J in figure, which uses the L1-L3 of three phase mains, and relay J coil one end is connected with L1,
Access L3 after the other end is connected with optocoupler OC output bidirectional triode thyristor.This working power circuit is formed to L1 phases in itself
The detection function of open phase fault occurs with L3 phases, the missing of the phase of any of which one all can interrupt relay J power supply, shape
Discharged into relay J, export disconnected phase information.
The L2 of three phase mains is detected by optocoupler OC, the commutation diode D1 in figure is followed by with what current-limiting resistance R1 connected
The L2-L3 for entering three phase mains forms half-wave rectifying circuit, and C1 is output filter capacitor；Optocoupler OC input light emitting diode is through limit
Leakage resistance R2 accesses L2-L3 half-wave rectifying circuits, and optocoupler OC output bidirectional triode thyristor is connected with relay J implements adhesive with releasing
The control put.Filter capacitor C1 discharge capacity is designed as driving OC output bidirectional triode thyristor to be held on 1/40 second to 1/25
Second, when L2-L3 voltages are normal, C1 both end voltages are higher, and electric current flows through OC input light emitting diode through R2, so as to trigger OC
Output bidirectional triode thyristor conducting；When L2-L3 voltages lack, C1 both end voltages can reduce rapidly, cause OC input to light
Diode current ends, and output bidirectional triode thyristor blocks.Optocoupler OC using the output of zero cross fired bidirectional triode thyristor implements voltage
Monitoring is controlled with relay driving, and circuit letter is bought, and Electro Magnetic Compatibility is good.
Expansion description is carried out to the present invention above in association with drawings and embodiments, the description does not have restricted, accompanying drawing
The shown embodiment that also simply the present invention is formed, technical scheme are not limited thereto.The ordinary skill people of this area
For member it should be appreciated that in the case where not departing from design philosophy of the present invention, actual implementation of the invention also has some details
On change.So as long as meeting spirit of the invention, these changes are included within protection scope of the present invention.
Claims (5)
1. a kind of elevator supply open phase detection method, including occur the detection of open phase fault and output to three phase mains, its feature
It is, comprises the following steps:
(1) testing result is exported by relay J adhesive and release conditions, relay J adhesives represent the three-phase of elevator supply
Without open phase fault in power supply；Relay J releases represent that open phase fault occur in wherein a phase or two-phase or three-phase in three phase mains；
(2) using the wherein two-phase L1-L3 composition relay power circuits of three phase mains, relay J adhesive is with being released through
Electric voltage observation circuit controls；
(3) electric voltage observation circuit connection three phase mains L2-L3, when L2-L3 voltages are normal by electric voltage observation circuit control after
Appliances power source circuit turn-on, ended when L2-L3 voltages lack by electric voltage observation circuit control relay power circuit；
(4) detection and output to elevator supply open phase fault is accomplished in the following manner in relay J:
A. when elevator supply is normal, relay power circuit is formed by the L1-L3 of three phase mains, identified through electric voltage observation circuit
L2-L3 is that voltage is normal, and the conducting of control relay power circuit, relay J adhesives, it is elevator supply without open phase fault to export；
B. when disconnected phase occur in a L2-L3 wherein phases for three phase mains or two-phase, the circuit power that L2-L3 is exported is caused to interrupt,
Relay J discharges because non-transformer is powered, and export has open phase fault for elevator supply；
C. when disconnected phase occurs in the L2 of three phase mains, L2-L3 voltages are identified to be abnormal through electric voltage observation circuit, control relay electricity
Source circuit is ended, and relay J releases, export has open phase fault for elevator supply.
2. it is a kind of implement claim 1 described in detection method elevator supply phase interruption testing device, including electric voltage observation circuit, after
Appliances power source circuit and output relay, it is characterized in that, the coil rating voltage of the relay J and the voltage phase of three phase mains
Together, the circuit power directly use elevator supply system AC power, the L1 connections of relay J one end and three phase mains,
The other end accesses the L1 of three phase mains by electric voltage observation circuit afterwards；The L2 connection electric voltage observation circuits of three phase mains, voltage
Observation circuit connects relay power circuit.
3. elevator supply phase interruption testing device according to claim 2, it is characterized in that, the electric voltage observation circuit is based on light
The detection circuit of coupling application technology, including commutation diode D1, current-limiting resistance R1, filter capacitor C1 and optocoupler OC, current-limiting resistance
R2；By R1 series connection D1 anodes, D1 negative electrodes access the L2 of three phase mains, and L2-L3 half-wave rectifying circuits are formed with the L3 of three phase mains,
C1 is the output filter capacitor of L2-L3 half-wave rectifying circuits；Optocoupler OC input light emitting diode accesses L2- through current-limiting resistance R2
L3 half-wave rectifying circuits, optocoupler OC output is bidirectional triode thyristor.
4. elevator supply phase interruption testing device according to claim 2, it is characterized in that, the electric voltage observation circuit for it is two-way can
Silicon drive circuit is controlled, its bidirectional triode thyristor is optocoupler OC output device, and its one end connects the L3 of three phase mains, other end series connection
The L1 of three phase mains is accessed after relay J, the conducting of bidirectional triode thyristor is touched with ending by optocoupler OC input light emitting diode
Hair control.
5. elevator supply phase interruption testing device according to claim 3, it is characterized in that, the capacity of the filter capacitor C1 is set
To maintain triggering optocoupler OC output conducting (1/40-1/25) seconds after open phase fault occurs in the L2 of three phase mains.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310753715.XA CN104749479B (en) | 2013-12-30 | 2013-12-30 | A kind of elevator supply open phase detection method and its detection means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310753715.XA CN104749479B (en) | 2013-12-30 | 2013-12-30 | A kind of elevator supply open phase detection method and its detection means |
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| Publication Number | Publication Date |
|---|---|
| CN104749479A CN104749479A (en) | 2015-07-01 |
| CN104749479B true CN104749479B (en) | 2018-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310753715.XA Expired - Fee Related CN104749479B (en) | 2013-12-30 | 2013-12-30 | A kind of elevator supply open phase detection method and its detection means |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105680506A (en) * | 2016-01-21 | 2016-06-15 | 江苏蒙哥马利电梯有限公司 | Power supply method for elevator car storage battery |
| CN108750855B (en) * | 2018-08-29 | 2024-02-13 | 西继迅达电梯有限公司 | Method and device for detecting open-phase and wrong-phase of three-phase power supply of elevator |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005003626A (en) * | 2003-06-16 | 2005-01-06 | Matsushita Electric Ind Co Ltd | Connection status judging method of three-phase power source and device therefor |
| CN101509946A (en) * | 2009-01-09 | 2009-08-19 | 上海新时达电气股份有限公司 | Phase-lacking and power down detecting method for three phase AC input power supply |
| CN101614795A (en) * | 2009-07-21 | 2009-12-30 | 北京中纺锐力机电有限公司 | A kind of default-phase signal detection circuit for three-phase power |
| CN102426302A (en) * | 2011-09-15 | 2012-04-25 | 广州三晶电气有限公司 | Three-phase power input open-phase detection circuit |
| CN202217019U (en) * | 2011-09-15 | 2012-05-09 | 广州三晶电气有限公司 | Three-phase supply input open phase detection circuit |
| CN103434899A (en) * | 2013-09-03 | 2013-12-11 | 天津豪雅科技发展有限公司 | Integrated controller for elevator |
-
2013
- 2013-12-30 CN CN201310753715.XA patent/CN104749479B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005003626A (en) * | 2003-06-16 | 2005-01-06 | Matsushita Electric Ind Co Ltd | Connection status judging method of three-phase power source and device therefor |
| CN101509946A (en) * | 2009-01-09 | 2009-08-19 | 上海新时达电气股份有限公司 | Phase-lacking and power down detecting method for three phase AC input power supply |
| CN101614795A (en) * | 2009-07-21 | 2009-12-30 | 北京中纺锐力机电有限公司 | A kind of default-phase signal detection circuit for three-phase power |
| CN102426302A (en) * | 2011-09-15 | 2012-04-25 | 广州三晶电气有限公司 | Three-phase power input open-phase detection circuit |
| CN202217019U (en) * | 2011-09-15 | 2012-05-09 | 广州三晶电气有限公司 | Three-phase supply input open phase detection circuit |
| CN103434899A (en) * | 2013-09-03 | 2013-12-11 | 天津豪雅科技发展有限公司 | Integrated controller for elevator |
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| CN104749479A (en) | 2015-07-01 |
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Effective date of registration: 20151105 Address after: 300384 Tianjin City Huayuan Industrial Zone Ziyuan Road No. 6 Building 1 room 3030 Applicant after: Tianjin Haoya Science & Technology Development Co., Ltd. Address before: 300164, No. 30, ERON garden, Zeng Xing kiln, Cheng Lin Street, Dongli, Tianjin Applicant before: Liu Pei |
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