CN102005719A - Three-phase undervoltage and phase failure time-delay relay - Google Patents
Three-phase undervoltage and phase failure time-delay relay Download PDFInfo
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- CN102005719A CN102005719A CN2010105004509A CN201010500450A CN102005719A CN 102005719 A CN102005719 A CN 102005719A CN 2010105004509 A CN2010105004509 A CN 2010105004509A CN 201010500450 A CN201010500450 A CN 201010500450A CN 102005719 A CN102005719 A CN 102005719A
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- 238000012360 testing method Methods 0.000 claims description 10
- 230000011664 signaling Effects 0.000 claims description 9
- 238000005070 sampling Methods 0.000 abstract description 6
- 229910052799 carbon Inorganic materials 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 238000011161 development Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 abstract 3
- 238000005516 engineering process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Classifications
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- 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 invention relates to a three-phase undervoltage and phase failure time-delay relay, which comprises a voltage sampling circuit, an operating comparator detection circuit, an undervoltage output circuit and a timing controller. The voltage sampling circuit is connected with a three-phase power supply; the operating comparator detection circuit is connected with the voltage sampling circuit and is used for comparing sampling voltage with the preset reference voltage so as to judge whether undervoltage or phase failure is present in the detected three-phase power supply; the undervoltage output circuit is connected with the operating comparator detection circuit and is used for outputting an instantaneous action signal for a remote signal when an undervoltage failure is detected; and the timing controller is connected with an output end of a timing trigger signal of the undervoltage output circuit and is used for outputting a time-delay action signal for the remote signal when the undervoltage time of the undervoltage failure reaches the set time delay. The relay can realize total functions of five combined relays in the prior art, saves shielding space in a control cabinet, simplifies installation and connection, reduces the consumption of materials and energy and reflects a green, environment-friendly and low-carbon economic development model.
Description
Technical field
The present invention relates to the technical field of the three-phase alternating voltage supervising device in transformer station or power plant, specifically is that a kind of three-phase is under-voltage, the phase shortage time-delay relay.
Background technology
At present; many transformer stations, power plant are all monitored at the three-phase alternating voltage of each node of electrical network putting into operation; use and maximum are to the phase shortage of PT voltage and under-voltagely detect on the spot; match with all kinds of protective relaying devices then, provide sound assurance the safety of electrical production, the precision of electric-power metering.
At present used three-phase alternating voltage detects the loop and is made up of five relays usually: three low-voltage relays detect A, B, C phase voltage respectively, and a time relay is delayed time, a relay output signal contact of merely hitting.
When in the screen cabinet, the multi-segment voltage bus being arranged, often need tens relays be installed in a control cubicle, not only consumptive material, power consumption, and also element is numerous and diverse in the cabinet, cabling confusion, debugging, maintenance difficulty.
Summary of the invention
The technical problem to be solved in the present invention provides that a kind of three-phase is under-voltage, the phase shortage time-delay relay, with the repertoire of realizing behind five relay assemblies that substitute prior art, not only saved screen bit space in the control cubicle, and simplified the installation wiring, reduce material, energy loss, embody the Economic Development Mode of green, environmental protection, low-carbon (LC).
In order to solve the problems of the technologies described above, it is under-voltage to the invention provides a kind of three-phase, the phase shortage time-delay relay comprises: the voltage sample circuit that links to each other with three phase mains, whether under-voltage what link to each other with voltage sample circuit is used for comparison sampled voltage and the reference voltage that presets to determine the computing comparator testing circuit of tested three phase mains or phase shortage, the under-voltage output circuit that is used for output remote signalling usefulness instantaneous operation signal when recording under-voltage fault that links to each other with computing comparator testing circuit, the timing controller that is used for output remote signalling usefulness deferred action signal after the under-voltage time of described under-voltage fault reaches the time-delay of setting that links to each other with the timing triggering signal output of under-voltage output circuit.
Further, described under-voltage output circuit is connected with the three-phase fault indicator light that is used to indicate described under-voltage fault.
Further, under-voltage, the phase shortage time-delay relay of this three-phase also comprises: accessory power supply, the DC/DC converter that links to each other with this accessory power supply, the reference voltage circuit that links to each other with the DC/DC converter; The reference voltage output end of this reference voltage circuit links to each other with the reference voltage input of described computing comparator testing circuit.
Further, described three-phase panel under-voltage, the phase shortage time-delay relay is provided with the three-phase operation indicator light of the running status of the described three phase mains of indication.
Further, described timing controller comprises: 0.1S time-base generator, the counter that links to each other with the output of this 0.1S time-base generator and by the deferred action signal relay of this counter controls; The timing triggering signal output of under-voltage output circuit links to each other with the triggering signal input of 0.1S time-base generator, the contact of deferred action signal relay links to each other with the deferred action signal contact, and the instantaneous operation signal output part of described under-voltage output circuit links to each other with the instantaneous operation signal contact.
Technique scheme of the present invention has the following advantages compared to existing technology: (1) three-phase of the present invention is under-voltage, the phase shortage time-delay relay utilizes direct current back work power supply, is transformed to the relay working power through DC/DC, and precision voltage reference is provided; Relay is sampled to A, B, the C three-phase alternating voltage of needs monitoring, simultaneously indicate its running status at panel, the three-phase alternating voltage that computing comparator testing circuit comes sampling respectively with the reference voltage that presets relatively after, determine whether under-voltage or phase shortage of detected voltage, after the timer internal time-delay,, send contact point signal simultaneously and make remote signalling usefulness at relay panel output faulty indication.(2) the present invention adopts key technologies such as the little power consumption switch power technology of wide voltage, little power consumption semiconductor integrated circuit technology, being suitable for voltage simultaneously is the direct current system of 110V or 220V, it both can directly be applied in newly-built electric substation, also can be applied in old electric substation transformation project.
Description of drawings
For the easier quilt of content of the present invention is clearly understood, according to specific embodiment also in conjunction with the accompanying drawings, the present invention is further detailed explanation below, wherein:
Fig. 1 is that the three-phase among the embodiment is under-voltage, the circuit structure block diagram of phase shortage time-delay relay;
Fig. 2 is that described three-phase is under-voltage, the schematic diagram of the panel of phase shortage time-delay relay;
Fig. 3 is that described three-phase is under-voltage, the binding post schematic diagram of phase shortage time-delay relay, and wherein Uf is the terminals of accessory power supply;
Fig. 4 is that described three-phase is under-voltage, the electrical schematic diagram of phase shortage time-delay relay; Wherein, a1--is A phase voltage operation indication; A2--A phase voltage faulty indication; U1, U2, U3, U4--computing comparator; The U5--0.1S time-base generator; The U6--counter; J1--instantaneous operation signal relay; J2--deferred action signal relay; 8--instantaneous operation signal contact; 9--deferred action signal contact.
Fig. 5 is that described three-phase is under-voltage, the function logic schematic diagram of phase shortage time-delay relay.
Embodiment
See Fig. 1-5, the three-phase of present embodiment is under-voltage, the phase shortage time-delay relay comprises: the voltage sample circuit that links to each other with three phase mains, whether under-voltage what link to each other with voltage sample circuit is used for comparison sampled voltage and the reference voltage that presets to determine the computing comparator testing circuit of tested three phase mains or phase shortage, the under-voltage output circuit that is used for output remote signalling usefulness instantaneous operation signal when recording under-voltage fault that links to each other with computing comparator testing circuit, the timing controller that is used for output remote signalling usefulness deferred action signal after the under-voltage time of described under-voltage fault reaches the time-delay of setting that links to each other with the timing triggering signal output of under-voltage output circuit.
Described under-voltage output circuit is connected with the three-phase fault indicator light that is used to indicate described under-voltage fault.
This three-phase is under-voltage, the phase shortage time-delay relay also comprises: accessory power supply, the DC/DC converter (that is: DC voltage converter) that links to each other with this accessory power supply, the reference voltage circuit that links to each other with the DC/DC converter; The reference voltage output end of this reference voltage circuit links to each other with the reference voltage input of described computing comparator testing circuit.The dc output end of DC/DC converter is also under-voltage with three-phase, the internal work power supply of phase shortage time-delay relay links to each other.
The three-phase operation indicator light that described three-phase is under-voltage, the panel of phase shortage time-delay relay is provided with the running status of the described three phase mains of indication.
Described timing controller comprises: 0.1S time-base generator, the counter that links to each other with the output of this 0.1S time-base generator and by the deferred action signal relay J2 of this counter controls; The timing triggering signal output of under-voltage output circuit links to each other with the triggering signal input of 0.1S time-base generator, the contact of deferred action signal relay J2 links to each other with the deferred action signal contact, and the instantaneous operation signal output part of described under-voltage output circuit (being the contact of instantaneous operation signal relay J1) links to each other with the instantaneous operation signal contact.
When being applied to the three-phase alternating voltage monitoring, A among Fig. 3, B, C, N are inserted the three-phase alternating voltage that needs monitoring, DC power supply is inserted at the two ends of Uf, then A, B, C three-phase alternating voltage are sampled, computing comparator U1, U2 and U3 compare with the reference voltage that presets respectively the three-phase alternating voltage that comes of sampling, if each phase voltage is normal, then on panel, indicate each phase voltage running status; As detect under-voltage, then on panel, indicate each phase voltage abnormality, and driving instantaneous operation signal relay J1, the output remote signalling uses the instantaneous operation signal to instantaneous operation signal contact 8, trigger 0.1S time-base generator U5 simultaneously, and make counter U6 carry out timing, if false voltage does not recover, and deferred action signal relay J2 moves after reaching the delay time of adjusting, and the output remote signalling uses the deferred action signal to deferred action signal contact contact 9.
Obviously, the foregoing description only is for example of the present invention clearly is described, and is not to be qualification to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all execution modes.And these belong to conspicuous variation or the change that spirit of the present invention extended out and still are among protection scope of the present invention.
Claims (5)
1. a three-phase is under-voltage, the phase shortage time-delay relay is characterized in that comprising: the voltage sample circuit that links to each other with three phase mains, whether under-voltage what link to each other with voltage sample circuit is used for comparison sampled voltage and the reference voltage that presets to determine the computing comparator testing circuit of tested three phase mains or open-phase fault, the under-voltage output circuit that is used for output remote signalling usefulness instantaneous operation signal when recording under-voltage fault that links to each other with computing comparator testing circuit, the timing controller that is used for output remote signalling usefulness deferred action signal after the under-voltage time of described under-voltage fault reaches the time-delay of setting that links to each other with the timing triggering signal output of under-voltage output circuit.
2. three-phase according to claim 1 is under-voltage, the phase shortage time-delay relay, it is characterized in that: described under-voltage output circuit is connected with the three-phase fault indicator light that is used to indicate described under-voltage fault.
3. three-phase according to claim 1 is under-voltage, the phase shortage time-delay relay, it is characterized in that: this three-phase is under-voltage, the phase shortage time-delay relay also comprises: accessory power supply, the DC/DC converter that links to each other with this accessory power supply, the reference voltage circuit that links to each other with the DC/DC converter; The reference voltage output end of this reference voltage circuit links to each other with the reference voltage input of described computing comparator testing circuit.
4. three-phase according to claim 1 is under-voltage, the phase shortage time-delay relay, it is characterized in that: the three-phase operation indicator light that described three-phase is under-voltage, the panel of phase shortage time-delay relay is provided with the running status of the described three phase mains of indication.
5. three-phase according to claim 3 is under-voltage, the phase shortage time-delay relay, and it is characterized in that: described timing controller comprises: 0.1S time-base generator, the counter that links to each other with the output of this 0.1S time-base generator and by the deferred action signal relay of this counter controls; The timing triggering signal output of under-voltage output circuit links to each other with the triggering signal input of 0.1S time-base generator, the contact of deferred action signal relay links to each other with the deferred action signal contact, and the instantaneous operation signal output part of described under-voltage output circuit links to each other with the instantaneous operation signal contact.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610292967.0A CN105810509B (en) | 2010-09-29 | 2010-09-29 | Time-delay relay |
| CN201610294865.2A CN105790209B (en) | 2010-09-29 | 2010-09-29 | A kind of three-phase is under-voltage and phase shortage time-delay relay |
| CN201010500450.9A CN102005719B (en) | 2010-09-29 | 2010-09-29 | Three-phase is under-voltage, phase shortage time-delay relay |
| CN201610293566.7A CN105788964B (en) | 2010-09-29 | 2010-09-29 | A kind of 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 |
| CN201610292037.5A CN105810508B (en) | 2010-09-29 | 2010-09-29 | A kind of time-delay relay |
| CN201610294864.8A CN105811365B (en) | 2010-09-29 | 2010-09-29 | Three-phase is under-voltage and open phase relay |
Applications Claiming Priority (1)
| 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 |
Related Child Applications (6)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610292967.0A Division CN105810509B (en) | 2010-09-29 | 2010-09-29 | Time-delay relay |
| CN201610292037.5A Division CN105810508B (en) | 2010-09-29 | 2010-09-29 | A kind of time-delay relay |
| CN201610294864.8A Division CN105811365B (en) | 2010-09-29 | 2010-09-29 | Three-phase is under-voltage and open phase relay |
| CN201610294865.2A Division CN105790209B (en) | 2010-09-29 | 2010-09-29 | A kind of three-phase is under-voltage and phase shortage time-delay relay |
| CN201610296355.9A Division CN105788966B (en) | 2010-09-29 | 2010-09-29 | Three-phase is under-voltage and phase shortage time-delay relay |
| CN201610293566.7A Division CN105788964B (en) | 2010-09-29 | 2010-09-29 | A kind of three-phase is under-voltage, phase shortage time-delay relay |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102005719A true CN102005719A (en) | 2011-04-06 |
| CN102005719B CN102005719B (en) | 2016-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610292967.0A Active CN105810509B (en) | 2010-09-29 | 2010-09-29 | Time-delay relay |
| CN201010500450.9A Active CN102005719B (en) | 2010-09-29 | 2010-09-29 | Three-phase is under-voltage, phase shortage time-delay relay |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610292967.0A Active CN105810509B (en) | 2010-09-29 | 2010-09-29 | Time-delay relay |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86100047A (en) * | 1986-01-02 | 1987-02-11 | 杨超 | Multi-function overload switch for 3-phase power supply |
| CN1047173A (en) * | 1989-05-11 | 1990-11-21 | 吴保华 | A kind of protective device for phase-missing in phase sequence |
| 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 |
| JPH06165364A (en) * | 1992-11-26 | 1994-06-10 | Toyo Electric Mfg Co Ltd | Method of detecting open phase of ac power source |
| CN2347292Y (en) * | 1998-05-28 | 1999-11-03 | 杨公俊 | Multifunctional power load 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 |
| CN201829923U (en) * | 2010-09-29 | 2011-05-11 | 江苏省电力公司金坛市供电公司 | Three-phase under-voltage/phase-failure time-delay relay |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2010
- 2010-09-29 CN CN201610292967.0A patent/CN105810509B/en active Active
- 2010-09-29 CN CN201010500450.9A patent/CN102005719B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86100047A (en) * | 1986-01-02 | 1987-02-11 | 杨超 | Multi-function overload switch for 3-phase power supply |
| CN1047173A (en) * | 1989-05-11 | 1990-11-21 | 吴保华 | A kind of protective device for phase-missing in phase sequence |
| 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 |
| JPH06165364A (en) * | 1992-11-26 | 1994-06-10 | Toyo Electric Mfg Co Ltd | Method of detecting open phase of ac power source |
| CN2347292Y (en) * | 1998-05-28 | 1999-11-03 | 杨公俊 | Multifunctional power load 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 |
| CN201829923U (en) * | 2010-09-29 | 2011-05-11 | 江苏省电力公司金坛市供电公司 | Three-phase under-voltage/phase-failure time-delay relay |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102005719B (en) | 2016-06-15 |
| CN105810509B (en) | 2018-09-21 |
| CN105810509A (en) | 2016-07-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| ASS | Succession or assignment of patent right |
Owner name: JIANGSU ELECTRIC POWER COMPANY, CHANGZHOU POWER SU Effective date: 20121114 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20121114 Address after: 213200 No. 111 North Gate Street, Golden Town, Jiangsu, Jintan Applicant after: Jintan Power Supply Company of Jiangsu Electric Power Company Applicant after: Changzhou Power Supply Co, Jiangsu Provincial Power Corp. Applicant after: Jiangsu Electric Power Company Applicant after: State Grid Corporation of China Address before: 213200 No. 111 North Gate Street, Golden Town, Jiangsu, Jintan Applicant before: Jintan Power Supply Company of Jiangsu Electric Power Company |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |