CN201829923U - Three-phase under-voltage/phase-failure time-delay relay - Google Patents
Three-phase under-voltage/phase-failure time-delay relay Download PDFInfo
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- CN201829923U CN201829923U CN2010205512925U CN201020551292U CN201829923U CN 201829923 U CN201829923 U CN 201829923U CN 2010205512925 U CN2010205512925 U CN 2010205512925U CN 201020551292 U CN201020551292 U CN 201020551292U CN 201829923 U CN201829923 U CN 201829923U
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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 5
- 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
- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/30—Reducing waste in manufacturing processes; Calculations of released waste quantities
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Abstract
The utility model relates to a three-phase under-voltage/phase-failure time-delay relay which comprises a voltage sampling circuit, a computing comparator detecting circuit, an under-voltage output circuit and a timing controller, wherein the voltage sampling circuit is connected with a three-phase power supply; the computing comparator detecting circuit is connected with the voltage sampling circuit and used for comparing a sampled voltage with a preset reference voltage so as to judge whether a detected three-phase power supply is of under-voltage or in phase failure; the under-voltage output circuit is connected with the computing comparator detecting circuit and used for outputting an instantaneous action signal for telesignalisation when an under-voltage failure is detected; and the timing controller is connected with the timing trigger signal output of the under-voltage output circuit and used for outputting a delay action signal for telesignalisation after the under-voltage failure lasts for a set delay. The three-phase under-voltage/phase-failure time-delay relay can substitute for five relays in the prior art and can achieve all the functions realized when the five relays are combined, so that not only the screen space in a control cabinet is saved, but also installation and wiring are simplified, the loss of material and energy is reduced, and a green, environment-friendly and low-carbon economic development mode is embodied.
Description
Technical field
The utility model 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.
The utility model content
The technical problems to be solved in the utility model 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, the utility model provides a kind of three-phase 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.
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 utility model has the following advantages compared to existing technology: (1) three-phase of the present utility model is under-voltage, the phase shortage time-delay relay utilizes direct current back work power supply, be 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 utility model 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 utility model is clearly understood, according to specific embodiment also in conjunction with the accompanying drawings, the utility model is described in further detail 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 the utility model example clearly is described, and is not to be qualification to execution mode of the present utility model.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 utility model extended out and still are among the protection range of the present utility model.
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 (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205512925U CN201829923U (en) | 2010-09-29 | 2010-09-29 | Three-phase under-voltage/phase-failure time-delay relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205512925U CN201829923U (en) | 2010-09-29 | 2010-09-29 | Three-phase under-voltage/phase-failure time-delay relay |
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| Publication Number | Publication Date |
|---|---|
| CN201829923U true CN201829923U (en) | 2011-05-11 |
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| CN2010205512925U Expired - Lifetime CN201829923U (en) | 2010-09-29 | 2010-09-29 | Three-phase under-voltage/phase-failure time-delay relay |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005719A (en) * | 2010-09-29 | 2011-04-06 | 江苏省电力公司金坛市供电公司 | Three-phase undervoltage and phase failure time-delay relay |
-
2010
- 2010-09-29 CN CN2010205512925U patent/CN201829923U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005719A (en) * | 2010-09-29 | 2011-04-06 | 江苏省电力公司金坛市供电公司 | Three-phase undervoltage and phase failure time-delay relay |
| CN102005719B (en) * | 2010-09-29 | 2016-06-15 | 江苏省电力公司金坛市供电公司 | Three-phase is under-voltage, phase shortage time-delay relay |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHANGZHOU POWER SUPPLY CO, JIANGSU PROVINCIAL POWE Effective date: 20150212 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150212 Address after: 213200 No. 111 North Gate Street, Golden Town, Jiangsu, Jintan Patentee after: Jintan Power Supply Company of Jiangsu Electric Power Company Patentee after: Changzhou Power Supply Co, Jiangsu Provincial Power Corp. Patentee after: Jiangsu Electric Power Company Patentee after: State Grid Corporation of China Address before: 213200 No. 111 North Gate Street, Golden Town, Jiangsu, Jintan Patentee before: Jintan Power Supply Company of Jiangsu Electric Power Company |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20110511 Effective date of abandoning: 20160615 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |