CN201797299U - Reverse-power relay - Google Patents
Reverse-power relay Download PDFInfo
- Publication number
- CN201797299U CN201797299U CN2010205099260U CN201020509926U CN201797299U CN 201797299 U CN201797299 U CN 201797299U CN 2010205099260 U CN2010205099260 U CN 2010205099260U CN 201020509926 U CN201020509926 U CN 201020509926U CN 201797299 U CN201797299 U CN 201797299U
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- reverse
- delay circuit
- relay
- power
- inverse probability
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- 230000003111 delayed effect Effects 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
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Abstract
The utility model relates to a reverse-power relay, and aims to provide a reverse-power relay capable of regulating the starting time of a protection movement. The reverse-power relay comprises a reverse-power detection device, an open-break signal output device and a time-delay circuit, wherein the input end of the time-delay circuit is connected with the reverse-power detection circuit and the output end of the time-delay circuit is connected with the open-break signal output device. The time-delay circuit is arranged, the delay time is adjustable, and the protection valve value is adjustable, so that the relay can meet the protection requirement of generators with different capacities and important loads of different types, and is convenient to use.
Description
Technical field
The utility model relates to electrical equipment and makes the field, and in particular, the utility model is a kind of reverse-power relay about electric security protector.
Background technology
In the generator powered system, must guarantee generator to the load transmission power, when generator becomes the load of electric power system, must from electrical network, cut off this generator fast, otherwise will burn generator.Equally, in the connected system of mains side bus and important load, take place, thereby must in time the important load excision be prevented that inverse probability from flowing out, the protection important load when mains side generation open circuit accident causes inverse probability.Yet in electrical network,, do not need in this case generator or important load excision because startup, electromagnetic interference, the electrical network three-phase imbalance of heavy load all can produce of short duration reverse power.
Patent Office of the People's Republic of China discloses a CN1618156A document on May 18th, 2005; name is called protection relay; this protection relay is to dispose the protection relay that is provided with in the system of connection with circuit breaker at the commercial side bus that connects general load and the important load that is connected important load with the tie point of mains side bus; comprise the voltage of importing commercial side bus respectively and the input unit of electric current; value according to voltage and electric current; detect from the important load inverse probability checkout gear of mains side bus to the opposite direction power outflow of commercial side bus, and when the inverse probability checkout gear detects power outflow in the other direction; the circuit breaker that the circuit breaker that output makes connection cut-off usefulness with circuit breaker cut-offs signal cut-offs signal output apparatus.The shortcoming of this protection relay is: can not regulate the start-up time of protection action, when of short duration inverse probability takes place, also generator or load can be excised from electrical network, cause unnecessary loss.
Summary of the invention
The problem that the utility model can not be regulated for the protection action launching time that exists in the solution prior art provides a kind of reverse-power relay that can regulate the protection action launching time.
The technical scheme that its technical problem that solves the utility model adopts is: the utility model comprises the inverse probability checkout gear and cut-offs signal output apparatus, also comprise a delay circuit, the input of delay circuit links to each other with the inverse probability checkout gear, the output of delay circuit with cut-off signal output apparatus and link to each other.At the inverse probability checkout gear and cut-off a delay circuit is set between the signal output apparatus, when inverse probability produces, do not start immediately and cut-off signal output apparatus, have only when the inverse probability certain time, the delay circuit delay time cut-offs signal output apparatus to just starting, increase the reliability of relay, avoided the unnecessary generation of from electrical network, excising of generator or important load.
As preferably, delay circuit is provided with and is installed in the potentiometer that is used to regulate delay time on the relay panel.For the generator of different capabilities or dissimilar its abilities of bearing inverse probability of important load is different, the potentiometer of one adjusting delay time is set on the relay panel, can make relay adapt to the generator of different capabilities and dissimilar loads, the convenient use.
As preferably, delay circuit is provided with to be installed in and is used for the indicator light that the display delayed time arrives on the relay panel.When relay delay circuit delay time to and start and to cut-off signal output apparatus, indicator light is bright to be shown and this actuating of relay can maintain easily people finder's fault.
As preferably, the inverse probability checkout gear is provided with and is installed in the potentiometer that is used to regulate the reverse power protection threshold values on the relay panel.Not only reflect in time for the generator of different capabilities or dissimilar its abilities of bearing inverse probability of important load; also be reflected on the size of bearing inverse probability; on the relay panel, be used to regulate the potentiometer of reverse power protection threshold values; to the generator of different capabilities or the dissimilar different reverse power protection action threshold values of load regulation; make relay adapt to the generator of different capabilities and dissimilar loads, the convenient use.
As preferably, the inverse probability checkout gear is provided with to be installed in and is used to the indicator light that shows that the reverse power protection threshold values arrives on the relay panel.On the relay panel, be used to the indicator light that shows that the reverse power protection threshold values arrives, can make things convenient for the commissioning staff to carry out parameter adjustment.
The beneficial effects of the utility model are: be provided with delay circuit, and delay time is adjustable, the protection threshold values is adjustable, makes relay can adapt to the protection requirement of the generator and the dissimilar important load of different capabilities, the convenient use.
Description of drawings
Fig. 1 is a kind of system block diagram of the present utility model;
Fig. 2 is a kind of panel schematic diagram of this utility model.
Among the figure: 1. inverse probability checkout gear, 2. delay circuit 3. cut-offs signal output apparatus, 4. panel, 5. protection threshold values regulator potentiometer, 6. delay time regulator potentiometer, 7. the protection threshold values is to indicator light, and 8. delay time is to indicator light.
Embodiment
Below by specific embodiment, and in conjunction with the accompanying drawings the technical solution of the utility model is described in further detail.
Embodiment:
A kind of reverse-power relay of present embodiment, referring to Fig. 1, comprise inverse probability checkout gear 1, delay circuit 2, cut-off signal output apparatus 3, the input of delay circuit 2 links to each other with inverse probability checkout gear 1, the output of delay circuit 2 with cut-off signal output apparatus 3 and link to each other; Be provided with reverse power protection threshold values regulator potentiometer 5 and reverse power protection threshold values to indicator light 7 at inverse probability checkout gear 1, be provided with delay time regulator potentiometer 6 and delay time to indicator light 8 at delay circuit 2; Referring to Fig. 2, will protect threshold values regulator potentiometer 5, delay time regulator potentiometer 6, protection threshold values to be arranged on the relay panel 4 to indicator light 8 to indicator light 7, delay time.
The input of inverse probability checkout gear 1 is connected on the tie point of generator and electrical network; by the protection threshold values regulator potentiometer 5 on the size adjustment panel 4 of generator capacity and delay time regulator potentiometer 6 to set reverse power protection threshold values and delay time value; when inverse probability checkout gear 1 detects inverse probability greater than set reverse power protection threshold values; the protection threshold values carries out early warning to indicator light 7 is bright; starting delay circuit 2 simultaneously picks up counting; if inverse probability continues greater than set reverse power protection threshold values in the delay time of setting; signal output apparatus 3 is cut-off in delay circuit 2 startups; cut-offfing signal output apparatus 3 control circuit breakers excises generator from electrical network; delay time is bright to indicator light 8 simultaneously, and the disconnection action that shows circuit breaker is due to the reverse-power relay protection is moved.
Above embodiment is one of preferred plan of the present utility model, is not that the utility model is done any pro forma restriction, also has other variant and remodeling under the prerequisite that does not exceed the technical scheme that claim puts down in writing.
Claims (7)
1. reverse-power relay, comprise the inverse probability checkout gear and cut-off signal output apparatus, it is characterized in that: also comprise a delay circuit, the input of described delay circuit links to each other with described inverse probability checkout gear, and the output of described delay circuit links to each other with the described signal output apparatus that cut-offs.
2. a kind of reverse-power relay according to claim 1 is characterized in that: described delay circuit is provided with and is installed in the potentiometer that is used to regulate delay time on the relay panel.
3. a kind of reverse-power relay according to claim 1 and 2 is characterized in that: described delay circuit is provided with to be installed in and is used for the indicator light that the display delayed time arrives on the relay panel.
4. a kind of reverse-power relay according to claim 1 and 2 is characterized in that: described inverse probability checkout gear is provided with and is installed in the potentiometer that is used to regulate the reverse power protection threshold values on the relay panel.
5. a kind of reverse-power relay according to claim 3 is characterized in that: described inverse probability checkout gear is provided with and is installed in the potentiometer that is used to regulate the reverse power protection threshold values on the relay panel.
6. a kind of reverse-power relay according to claim 1 and 2 is characterized in that: described inverse probability checkout gear is provided with to be installed in and is used to the indicator light that shows that the reverse power protection threshold values arrives on the relay panel.
7. a kind of reverse-power relay according to claim 3 is characterized in that: described inverse probability checkout gear is provided with to be installed in and is used to the indicator light that shows that the reverse power protection threshold values arrives on the relay panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205099260U CN201797299U (en) | 2010-08-31 | 2010-08-31 | Reverse-power relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205099260U CN201797299U (en) | 2010-08-31 | 2010-08-31 | Reverse-power relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201797299U true CN201797299U (en) | 2011-04-13 |
Family
ID=43852198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205099260U Expired - Fee Related CN201797299U (en) | 2010-08-31 | 2010-08-31 | Reverse-power relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201797299U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105553350A (en) * | 2016-02-24 | 2016-05-04 | 台州谊聚机电有限公司 | Motor control circuit in water pump system |
| CN109286174A (en) * | 2017-07-20 | 2019-01-29 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | A kind of control device and power guard method for Gas Turbine Generating Units |
-
2010
- 2010-08-31 CN CN2010205099260U patent/CN201797299U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105553350A (en) * | 2016-02-24 | 2016-05-04 | 台州谊聚机电有限公司 | Motor control circuit in water pump system |
| CN109286174A (en) * | 2017-07-20 | 2019-01-29 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | A kind of control device and power guard method for Gas Turbine Generating Units |
| CN109286174B (en) * | 2017-07-20 | 2020-10-20 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | Control device for gas turbine generator set and power protection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110413 Termination date: 20170831 |