CN105788966B - Three-phase is under-voltage and phase shortage time-delay relay - Google Patents
Three-phase is under-voltage and phase shortage time-delay relay Download PDFInfo
- Publication number
- CN105788966B CN105788966B CN201610296355.9A CN201610296355A CN105788966B CN 105788966 B CN105788966 B CN 105788966B CN 201610296355 A CN201610296355 A CN 201610296355A CN 105788966 B CN105788966 B CN 105788966B
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- action signal
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- 238000001514 detection method Methods 0.000 claims abstract description 12
- 230000011664 signaling Effects 0.000 claims abstract description 10
- 230000005611 electricity Effects 0.000 claims description 5
- 238000005070 sampling 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
- 230000003111 delayed effect Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000000739 chaotic effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000012423 maintenance 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
- H01H47/18—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for introducing delay in the operation of the relay
Abstract
The present invention relates to a kind of three-phase is under-voltage and phase shortage time-delay 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 phase shortage time-delay 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 phase shortage time-delay relay, to substitute existing skill
The repertoire realized after five relay assemblies of art not only saves and shields bit space in switch board, and simplifies installation
Wiring reduces material, energy loss, embodies green, environmentally friendly, low-carbon Economic Development Mode.
In order to solve the above technical problem, the present invention provides a kind of three-phase is under-voltage and phase shortage time-delay relay, including：With
The connected voltage sample circuit of three phase mains, the sampled voltage for compared with being connected with voltage sample circuit and preset benchmark electricity
Pressure with determine whether under-voltage tested three phase mains or operation comparator detection circuit of phase shortage, with operation comparator detection circuit
The connected under-voltage output circuit for exporting remote signalling snap action signal when measuring under-voltage fault and under-voltage output circuit
Timing trigger signal output end be connected for exported after the delay that the under-voltage time of the under-voltage fault reaches setting it is distant
The timing controller of credit 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 phase shortage time-delay relay further includes：Accessory power supply is connected with the accessory power supply
DC/DC converters, the reference voltage circuit being connected with DC/DC converters；The reference voltage output end of the reference voltage circuit with
The reference voltage input of the operation comparator detection circuit is connected.
Further, the three-phase is under-voltage and the panel of phase shortage time-delay relay is equipped with the operation for indicating the three phase mains
The three-phase operation indicator light of state.
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 delay relay utilizes direct current back work power supply, is transformed to relay working power through DC/DC, and provide high-precision base
Quasi- voltage；A, B, C three-phase alternating voltage that relay monitors needs sample, while indicating its operating status in panel,
Operation comparator detection circuit to sample come three-phase alternating voltage respectively with preset reference voltage relatively after, determine tested
Survey whether voltage is under-voltage or phase shortage is simultaneously emitted by contact in relay panel output indicating fault after timer internal is delayed
Signal is used as remote signalling.(2) present invention is using Width funtion micro energy lose switch power technology, micro energy lose semiconductor integrated circuit technology etc.
Key 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,
It can apply 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 phase shortage time-delay relay；
Fig. 2 is that the three-phase is under-voltage and the schematic diagram of the panel of phase shortage time-delay relay；
Fig. 3 is that the three-phase is under-voltage and the connecting terminal schematic diagram of phase shortage time-delay relay, and wherein Uf is accessory power supply
Terminals；
Fig. 4 is that the three-phase is under-voltage and the electrical schematic diagram of phase shortage time-delay relay；Wherein, a1-- is the operation of A phase voltages
Instruction；A2--A phase voltage indicating fault；U1, U2, U3, U4-- operation comparator；U5--0.1S time-base generators；U6-- is counted
Device；J1-- snap action signal relays；J2-- deferred action signal relays；8-- snap action signal contacts；9-- is delayed
Actuating signal contact.
Fig. 5 is that the three-phase is under-voltage and the function logic schematic diagram of phase shortage time-delay relay.
Specific implementation mode
See Fig. 1-5, the three-phase of the present embodiment is under-voltage and phase shortage time-delay relay includes：The voltage being connected with three phase mains takes
Sample circuit, the sampled voltage for compared with being connected with voltage sample circuit are with preset reference voltage to determine tested three-phase electricity
Whether source under-voltage or phase shortage operation comparator detection circuit, be connected with operation comparator detection circuit for measure it is under-voltage
Under-voltage output circuit, the timing trigger signal output end with under-voltage output circuit that remote signalling snap action signal is exported when failure
Connected is used to export determining for remote signalling deferred action signal after the delay that the under-voltage time of the under-voltage fault reaches setting
When controller.
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 phase shortage time-delay relay further includes：Accessory power supply, the DC/DC being connected with accessory power supply transformation
Device is (i.e.：DC voltage converter), the reference voltage circuit that is connected with DC/DC converters；The benchmark electricity of the reference voltage circuit
Pressure output end is connected with the reference voltage input of the operation comparator detection circuit.The DC output end of DC/DC converters
Also with three-phase is under-voltage and the internal work power supply of phase shortage time-delay relay is connected.
The three-phase is under-voltage and the panel of phase shortage time-delay relay is equipped with the operating status for indicating the three phase mains
Three-phase operation indicator light.
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 phase shortage time-delay relay, it is characterised in that including：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 open-phase fault operation comparator detection circuit, be connected with operation comparator detection circuit for measure it is under-voltage
Under-voltage output circuit, the timing trigger signal output end with under-voltage output circuit that remote signalling snap action signal is exported when failure
Connected is used to export determining for remote signalling deferred action signal after the delay that the under-voltage time of the under-voltage fault reaches setting
When controller, accessory power supply, the DC/DC converters being connected with the accessory power supply, the reference voltage being connected with DC/DC converters electricity
Road, the reference voltage input phase of the reference voltage output end of the reference voltage circuit and the operation comparator detection circuit
Even；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 of the panel of phase shortage time-delay relay equipped with the operating status for indicating the three phase mains
Run indicator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610296355.9A CN105788966B (en) | 2010-09-29 | 2010-09-29 | Three-phase is under-voltage and phase shortage time-delay 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 |
| CN201610296355.9A CN105788966B (en) | 2010-09-29 | 2010-09-29 | Three-phase is under-voltage and phase shortage time-delay 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 |
|---|---|
| CN105788966A CN105788966A (en) | 2016-07-20 |
| CN105788966B true CN105788966B (en) | 2018-10-16 |
Family
ID=56400817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610296355.9A Active CN105788966B (en) | 2010-09-29 | 2010-09-29 | Three-phase is under-voltage and phase shortage time-delay relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105788966B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113985274A (en) * | 2021-11-16 | 2022-01-28 | 广东电网有限责任公司 | Transformer substation under-voltage relay calibration device, system and method |
Citations (3)
| 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 |
| 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 |
|---|---|---|---|---|
| JPH06165364A (en) * | 1992-11-26 | 1994-06-10 | Toyo Electric Mfg Co Ltd | Method of detecting open phase of ac power source |
-
2010
- 2010-09-29 CN CN201610296355.9A patent/CN105788966B/en active Active
Patent Citations (3)
| 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 |
| 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 |
|---|---|
| CN105788966A (en) | 2016-07-20 |
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