CN105811365B - Three-phase is under-voltage and open phase relay - Google Patents
Three-phase is under-voltage and open phase relay Download PDFInfo
- Publication number
- CN105811365B CN105811365B CN201610294864.8A CN201610294864A CN105811365B CN 105811365 B CN105811365 B CN 105811365B CN 201610294864 A CN201610294864 A CN 201610294864A CN 105811365 B CN105811365 B CN 105811365B
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- voltage
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- relay
- action signal
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- 238000001514 detection method Methods 0.000 claims abstract description 13
- 230000011664 signaling Effects 0.000 claims abstract description 13
- 230000005856 abnormality Effects 0.000 claims description 2
- 238000005070 sampling Methods 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 230000000712 assembly Effects 0.000 abstract description 2
- 238000000429 assembly Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 230000000739 chaotic effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- 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
- H02H3/24—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 undervoltage or no-voltage
- H02H3/253—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 undervoltage or no-voltage for multiphase applications, e.g. phase interruption
-
- 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
- H02H3/24—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 undervoltage or no-voltage
- H02H3/247—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 undervoltage or no-voltage having timing means
Abstract
The present invention relates to a kind of three-phase is under-voltage and open phase relay comprising：The voltage sample circuit being connected with three phase mains, whether tested three phase mains under-voltage or operation comparator detection circuit of phase shortage to determine for sampled voltage and preset reference voltage compared with what is be connected with voltage sample circuit be used for, the under-voltage output circuit for exporting remote signalling snap action signal when measuring under-voltage fault being connected with operation comparator detection circuit, the timing controller for exporting remote signalling deferred action signal after the delay that the under-voltage time of the under-voltage fault reaches setting being connected with the timing trigger signal output end of under-voltage output circuit.The repertoire realized after five relay assemblies of the alternative prior art of relay of the present invention, it not only saves and shields bit space in switch board, and installation wiring is simplified, material, energy loss are reduced, green, environmentally friendly, low-carbon Economic Development Mode are embodied.
Description
Technical field
The present invention relates to substation or the technical field of the three-phase alternating voltage monitoring device in power plant, specifically a kind of three
Mutually under-voltage and open phase relay.
Background technology
Currently, many substations, power plant are all monitored the three-phase alternating voltage to put into operation in each node of power grid, use
Most be to the phase shortages of PT voltages and it is under-voltage detected on the spot, then matched with all kinds of protective relaying devices, to electric power
The safety of production, the precision of electric-power metering provide sound assurance.
Presently used three-phase alternating voltage measure loop is usually made of five relays：Three low-voltage relay difference
A, B, C phase voltage are detected, a time relay is into line delay, an intermediate relay output signal contact.
When having multi-segment voltage busbar in screen cabinet, it is often necessary to tens relays are installed in a face switch board, no
Only consumptive material, energy consumption, and element is complicated in cabinet, and cabling is chaotic, and debugging, maintenance are difficult.
Invention content
The technical problem to be solved in the present invention is to provide a kind of three-phase is under-voltage and open phase relay, to substitute the prior art
The repertoire realized after five relay assemblies not only saves and shields bit space in switch board, and simplifies installation wiring,
Material, energy loss are reduced, green, environmentally friendly, low-carbon Economic Development Mode are embodied.
In order to solve the above technical problem, the present invention provides a kind of three-phase is under-voltage and open phase relay, including：With three-phase
The connected voltage sample circuit of power supply, be connected with voltage sample circuit be used for compared with sampled voltage and preset reference voltage with
It determines whether under-voltage tested three phase mains or operation comparator detection circuit of phase shortage, be connected with operation comparator detection circuit
By when measuring under-voltage fault export remote signalling snap action signal under-voltage output circuit, with under-voltage output circuit based on
When trigger signal output end be connected for after the delay that the under-voltage time of the under-voltage fault reaches setting export remote signalling use
The timing controller of deferred action signal.
Further, the under-voltage output circuit is connected with the three-phase fault indicator light for being used to indicate the under-voltage fault.
Further, the three-phase is under-voltage and open phase relay further includes：Accessory power supply, the DC/DC being connected with the accessory power supply
Converter, the reference voltage circuit being connected with DC/DC converters；The reference voltage output end of the reference voltage circuit and the fortune
The reference voltage input for calculating comparator detection circuit is connected.
Further, the three-phase is under-voltage and the panel of open phase relay is equipped with the operating status for indicating the three phase mains
Three-phase operation indicator light.
Further, the timing controller includes：0.1S time-base generators, the output end phase with the 0.1S time-base generators
The counter connected and the deferred action signal relay by the counter controls；The timing trigger signal of under-voltage output circuit exports
End is connected with the trigger signal input terminal of 0.1S time-base generators, contact and the deferred action signal of deferred action signal relay
Contact is connected, and the snap action signal output end of the under-voltage output circuit is connected with snap action signal contact.
The above technical solution of the present invention has the following advantages over the prior art：(1) three-phase of the invention is under-voltage and scarce
Phase relay utilizes direct current back work power supply, and relay working power is transformed to through DC/DC, and provides high precision reference electricity
Pressure；A, B, C three-phase alternating voltage that relay monitors needs sample, while indicating its operating status, operation in panel
Comparator detection circuit to sample come three-phase alternating voltage respectively with preset reference voltage relatively after, determine be detected electricity
Whether under-voltage or phase shortage is simultaneously emitted by contact point signal to pressure in relay panel output indicating fault after timer internal is delayed
It is used as remote signalling.(2) present invention is using keys such as Width funtion micro energy lose switch power technology, micro energy lose semiconductor integrated circuit technologies
Technology, while it being applicable in the straight-flow system that voltage is 110V or 220V, it can both be directly applied to newly-built electric substation, can also
It applies in old electric substation's transformation project.
Description of the drawings
In order to make the content of the present invention more clearly understood, right below according to specific embodiment and in conjunction with attached drawing
The present invention is described in further detail, wherein：
Fig. 1 be in embodiment three-phase is under-voltage and the circuit structure block diagram of open phase relay；
Fig. 2 is that the three-phase is under-voltage and the schematic diagram of the panel of open phase relay；
Fig. 3 is that the three-phase is under-voltage and the connecting terminal schematic diagram of open phase relay, and wherein Uf is the wiring of accessory power supply
End；
Fig. 4 is that the three-phase is under-voltage and the electrical schematic diagram of open phase relay；Wherein, a1-- is the operation instruction of A phase voltages；
A2--A phase voltage indicating fault；U1, U2, U3, U4-- operation comparator；U5--0.1S time-base generators；U6-- counters；
J1-- snap action signal relays；J2-- deferred action signal relays；8-- snap action signal contacts；9-- deferred actions
Signal contact.
Fig. 5 is that the three-phase is under-voltage and the function logic schematic diagram of open phase relay.
Specific implementation mode
See Fig. 1-5, the three-phase of the present embodiment is under-voltage and open phase relay includes：The voltage sampling electricity being connected with three phase mains
Road, be connected with voltage sample circuit be used for compared with sampled voltage determine tested three phase mains with preset reference voltage and be
No under-voltage or phase shortage operation comparator detection circuit, be connected with operation comparator detection circuit for measuring under-voltage fault
When output remote signalling snap action signal under-voltage output circuit, be connected with the timing trigger signal output end of under-voltage output circuit
For after the delay that the under-voltage time of the under-voltage fault reaches setting export remote signalling deferred action signal timing control
Device processed.
The under-voltage output circuit is connected with the three-phase fault indicator light for being used to indicate the under-voltage fault.
The three-phase is under-voltage and open phase relay further includes：Accessory power supply, the DC/DC converters being connected with the accessory power supply
(i.e.：DC voltage converter), the reference voltage circuit that is connected with DC/DC converters；The reference voltage of the reference voltage circuit
Output end is connected with the reference voltage input of the operation comparator detection circuit.The DC output end of DC/DC converters is also
With three-phase is under-voltage and the internal work power supply of open phase relay is connected.
The three-phase is under-voltage and three-phase of the panel of open phase relay equipped with the operating status for indicating the three phase mains
Run indicator.
The timing controller includes：0.1S time-base generators, the meter being connected with the output end of the 0.1S time-base generators
Number device and the deferred action signal relay J2 by the counter controls；The timing trigger signal output end of under-voltage output circuit with
The trigger signal input terminal of 0.1S time-base generators is connected, and contact and the deferred action signal of deferred action signal relay J2 connect
Point is connected, the snap action signal output end (i.e. the contact of snap action signal relay J1) of the under-voltage output circuit and wink
When actuating signal contact be connected.
When being monitored applied to three-phase alternating voltage, A, B, C, N access in Fig. 3 are needed into the three-phase alternating voltage monitored,
DC power supply is accessed at the both ends of Uf, is then sampled to A, B, C three-phase alternating voltage, operation comparator U1, U2 and U3 are to adopting
The three-phase alternating voltage that sample comes is compared with preset reference voltage respectively, if each phase voltage is normal, is indicated on panel
Each phase voltage operating status；It such as detects under-voltage, then indicates each phase voltage abnormality on panel, and drive instantaneous dynamic
Make signal relay J1, base occurs when exporting remote signalling with snap action signal to snap action signal contact 8, while triggering 0.1S
Device U5, and counter U6 is made to carry out timing, if false voltage does not restore, and reach deferred action signal after the delay time adjusted
Relay J2 actions, export remote signalling deferred action signal to deferred action signal contact contact 9.
Obviously, the above embodiment is merely an example for clearly illustrating the present invention, and is not to the present invention
The restriction of embodiment.For those of ordinary skill in the art, it can also be made on the basis of the above description
Its various forms of variation or variation.There is no necessity and possibility to exhaust all the enbodiments.And these belong to this hair
The obvious changes or variations that bright spirit is extended out are still in the protection scope of this invention.
Claims (1)
1. a kind of three-phase is under-voltage and open phase relay, it is characterised in that including：The voltage sample circuit that is connected with three phase mains, with
What voltage sample circuit was connected is used to compare sampled voltage with preset reference voltage to determine whether tested three phase mains is owed
Pressure or open-phase fault operation comparator detection circuit, be connected with operation comparator detection circuit be used for measuring under-voltage fault
When output remote signalling snap action signal under-voltage output circuit, be connected with the timing trigger signal output end of under-voltage output circuit
For after the delay that the under-voltage time of the under-voltage fault reaches setting export remote signalling deferred action signal timing control
Device processed, accessory power supply, the DC/DC converters being connected with the accessory power supply, the reference voltage circuit being connected with DC/DC converters,
The reference voltage output end of the reference voltage circuit is connected with the reference voltage input of the operation comparator detection circuit；
The DC output end of DC/DC converters is also connected with the internal work power supply of time-delay relay；
The timing controller includes：0.1S time-base generators, the counter being connected with the output end of the 0.1S time-base generators
With the deferred action signal relay by the counter controls；When the timing trigger signal output end of under-voltage output circuit is with 0.1S
The trigger signal input terminal of base generator is connected, and the contact of deferred action signal relay is connected with deferred action signal contact,
The snap action signal output end of the under-voltage output circuit is connected with snap action signal contact；
The three-phase is under-voltage and three-phase operation of the panel of open phase relay equipped with the operating status for indicating the three phase mains
Indicator light；The under-voltage output circuit is connected with the three-phase fault indicator light for being used to indicate the under-voltage fault；
When the three-phase is under-voltage and open phase relay is applied to three-phase alternating voltage monitoring, operation comparator detection circuit is to sampling
The three-phase alternating voltage come is compared with preset reference voltage respectively, if each phase voltage is normal, is indicated on panel each
Phase voltage operating status；It such as detects under-voltage, then indicates each phase voltage abnormality on panel, and drive snap action
Signal relay exports remote signalling with snap action signal to snap action signal contact, while triggering 0.1S time-base generators, and
Counter is set to carry out timing, if false voltage does not restore, and it is dynamic to reach deferred action signal relay after the delay time adjusted
Make, exports remote signalling deferred action signal to deferred action signal contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610294864.8A CN105811365B (en) | 2010-09-29 | 2010-09-29 | Three-phase is under-voltage and open phase relay |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010500450.9A CN102005719B (en) | 2010-09-29 | 2010-09-29 | Three-phase is under-voltage, phase shortage time-delay relay |
| CN201610294864.8A CN105811365B (en) | 2010-09-29 | 2010-09-29 | Three-phase is under-voltage and open phase relay |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010500450.9A Division CN102005719B (en) | 2010-09-29 | 2010-09-29 | Three-phase is under-voltage, phase shortage time-delay relay |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105811365A CN105811365A (en) | 2016-07-27 |
| CN105811365B true CN105811365B (en) | 2018-09-11 |
Family
ID=56455286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610294864.8A Active CN105811365B (en) | 2010-09-29 | 2010-09-29 | Three-phase is under-voltage and open phase relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105811365B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2093449U (en) * | 1991-08-23 | 1992-01-15 | 航空航天工业部第六○二研究所 | Three-phase multifunctional electric protector for machine tool |
| CN2347292Y (en) * | 1998-05-28 | 1999-11-03 | 杨公俊 | Multifunctional power load switch |
| CN101162850A (en) * | 2007-09-20 | 2008-04-16 | 浙江中凯电器有限公司 | Control device of duplicate supply attent-unattent switch |
| CN201096825Y (en) * | 2007-11-05 | 2008-08-06 | 湖北省电力试验研究院 | Thunder online monitoring device for transmission line |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100541724B1 (en) * | 2002-11-08 | 2006-01-11 | 삼성전자주식회사 | power supply apparatus for motor and controlling method thereof |
-
2010
- 2010-09-29 CN CN201610294864.8A patent/CN105811365B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2093449U (en) * | 1991-08-23 | 1992-01-15 | 航空航天工业部第六○二研究所 | Three-phase multifunctional electric protector for machine tool |
| CN2347292Y (en) * | 1998-05-28 | 1999-11-03 | 杨公俊 | Multifunctional power load switch |
| CN101162850A (en) * | 2007-09-20 | 2008-04-16 | 浙江中凯电器有限公司 | Control device of duplicate supply attent-unattent switch |
| CN201096825Y (en) * | 2007-11-05 | 2008-08-06 | 湖北省电力试验研究院 | Thunder online monitoring device for transmission line |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105811365A (en) | 2016-07-27 |
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