CN104242243A - Novel protection device for non-normal shutdown of hydraulic generator - Google Patents
Novel protection device for non-normal shutdown of hydraulic generator Download PDFInfo
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- CN104242243A CN104242243A CN201310230876.0A CN201310230876A CN104242243A CN 104242243 A CN104242243 A CN 104242243A CN 201310230876 A CN201310230876 A CN 201310230876A CN 104242243 A CN104242243 A CN 104242243A
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- relay
- contact
- coil
- electrical network
- power supply
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Abstract
The invention discloses a novel protection device for a non-normal shutdown of a hydraulic generator. The novel protection device comprises a DC power supply, a manual automatic change-over switch, a power grid contactor, a field suppression relay, a main switch, a DC motor, an alarm unit and a self-locking relay. The positive-pole output end of the DC power supply is connected with the input end of the manual automatic change-over switch and one end of a coil of the self-locking relay at the same time. The other end of a contact of the power grid contactor is connected with one end of a coil of the field suppression relay. The other end of the coil of the field suppression relay is connected with one end of a contact of the main switch. The output end of the DC motor is connected with the negative-pole input end of the DC power supply and one end of the alarm unit at the same time. The other end of the alarm unit is connected with one end of a contact of the field suppression relay and one end of a contact of the self-locking relay at the same time. The novel protection device is simple in structural design, easy to operate, safe, low in cost and capable of solving the accident of non-normal shutdown of the hydraulic generator and provides an effective device measure for the safety of a power plant and staff.
Description
Technical field
The present invention relates to a kind of hydraulic generator, particularly relate to a kind of protective device of Novel water wheel generator abnormal shutdown.
Background technology
Water generating is the main generation mode of China, and hydraulic generator is one of the main equipment in hydroelectric station, and the operation that can hydraulic generator safe and reliable will directly affect the safe operation in hydroelectric station and even electric power system.In the middle of the running that hydraulic generator is long-term, may occur the situation of generator abnormal shutdown, if can not process in time, generating equipment will be subject to serious damage, even whole power plant building all can be on the hazard, and can bring unnecessary economic loss or casualties.
Summary of the invention
Object of the present invention is just the protective device providing a kind of Novel water wheel generator abnormal shutdown in order to solve the problem.
The present invention is achieved through the following technical solutions above-mentioned purpose:
The present invention includes DC power supply, manual automatic transfer switch, electrical network contactor, demagnetization relay, master switch, direct current machine, alarm and latching relay, the cathode output end of described DC power supply is connected with the input of described manual automatic transfer switch and one end of described latching relay coil simultaneously, described manual automatic transfer switch comprises the first output and the second output, described second output is connected with one end of described electrical network contacts of contactor, the other end of described electrical network contacts of contactor is connected with one end of described demagnetization relay coil, the other end of described demagnetization relay coil connects and is connected with one end of described master switch contact, the other end of described master switch contact is connected with the input of described direct current machine, the output of described direct current machine is connected with the negative input of described DC power supply and one end of described alarm simultaneously, the other end of described alarm is connected with one end of described demagnetization relay contact and one end of described latching relay contact simultaneously, the other end of described demagnetization relay contact is connected with the described latching relay coil other end with the other end of described latching relay contact simultaneously.
Further, the coil of described electrical network contactor is arranged in electrical network.
Further, the normally-closed contact of described demagnetization relay is arranged in field circuit.
Beneficial effect of the present invention is:
Structural design of the present invention is simple, easily operates, safety, convenient, with low cost, can solve this accident of the abnormal shutdown that hydraulic generator runs into, for power plant and personal security provide a kind of very effective device measure.
Accompanying drawing explanation
Fig. 1 is circuit working schematic diagram of the present invention.
Fig. 2 is the structured flowchart of the whole electric power system of the present invention.
In figure: ZD-DC power supply, SA-manual automatic transfer switch, KM1-electrical network contactor, KA1-demagnetization relay, KM-master switch, M-direct current machine, B-alarm, KA2-latching relay.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1, the present invention includes DC power supply ZD, manual automatic transfer switch SA, electrical network contactor KM1, demagnetization relay K A1, master switch KM, direct current machine M, alarm B and latching relay KA2, the cathode output end of DC power supply ZD is connected with the input of manual automatic transfer switch SA and one end of latching relay KA2 coil simultaneously, manual automatic transfer switch SA comprises the first output and the second output, second output is connected with one end of electrical network contactor KM1 contact, the other end of electrical network contactor KM1 contact is connected with one end of demagnetization relay K A1 coil, the other end of demagnetization relay coil KA1 connects and is connected with one end of master switch KM contact, the other end of master switch KM contact is connected with the input of direct current machine M, the output of direct current machine M is connected with the negative input of DC power supply ZD and one end of alarm B simultaneously, the other end of alarm B is connected with one end of demagnetization relay K A1 contact and one end of latching relay KA2 contact simultaneously, the other end of demagnetization relay contact KA1 is connected with the latching relay KA2 coil other end with the other end of latching relay KA2 contact simultaneously.
As shown in Figure 2, the coil of electrical network contactor KM1 is arranged in electrical network, and the normally-closed contact of demagnetization relay K A1 is arranged in field circuit.
Operation principle of the present invention is: when hydraulic generator normally works, and manual automatic transfer switch SA1 is placed in automated location.When electrical network and generator disconnect, electrical breakdown, thus electrical network contactor KM dead electricity, the normally-closed contact of electrical network contactor KM closes, now DC power supply output current flows through manual automatic transfer switch SA1, then the normally-closed contact of electrical network contactor KM is flow through, flow through the coil of demagnetization relay K A1 again, thus the normally opened contact of demagnetization relay K A1 closes, alarm place in circuit and start report to the police, the normally-closed contact of demagnetization relay K A1 disconnects, field circuit breaks, just can be magnetic because generator needs to be connected into field circuit, just can produce voltage by cutting magnetic motion, so now loss of exicitation, generator is output voltage no longer.Electric current flows to master switch KM from the coil of demagnetization relay K A1, flow to direct current machine M again, thus direct current machine starts to rotate the motion of drive reducing gear, make the speed regulator entry into service of the hydraulic turbine, through after a while after the hydraulic turbine stops, master switch KM disconnects, now the whole system of hydraulic generator all decommissions, owing to there being the existence of latching relay, so alarm continues to report to the police, until staff carrys out accident settlement.
Claims (3)
1. the protective device of a Novel water wheel generator abnormal shutdown, it is characterized in that: comprise DC power supply, manual automatic transfer switch, electrical network contactor, demagnetization relay, master switch, direct current machine, alarm and latching relay, the cathode output end of described DC power supply is connected with the input of described manual automatic transfer switch and one end of described latching relay coil simultaneously, described manual automatic transfer switch comprises the first output and the second output, described second output is connected with one end of described electrical network contacts of contactor, the other end of described electrical network contacts of contactor is connected with one end of described demagnetization relay coil, the other end of described demagnetization relay coil connects and is connected with one end of described master switch contact, the other end of described master switch contact is connected with the input of described direct current machine, the output of described direct current machine is connected with the negative input of described DC power supply and one end of described alarm simultaneously, the other end of described alarm is connected with one end of described demagnetization relay contact and one end of described latching relay contact simultaneously, the other end of described demagnetization relay contact is connected with the described latching relay coil other end with the other end of described latching relay contact simultaneously.
2. the protective device of Novel water wheel generator abnormal shutdown according to claim 1, is characterized in that: the coil of described electrical network contactor is arranged in electrical network.
3. the protective device of Novel water wheel generator abnormal shutdown according to claim 1, is characterized in that: the normally-closed contact of described demagnetization relay is arranged in field circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310230876.0A CN104242243A (en) | 2013-06-09 | 2013-06-09 | Novel protection device for non-normal shutdown of hydraulic generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310230876.0A CN104242243A (en) | 2013-06-09 | 2013-06-09 | Novel protection device for non-normal shutdown of hydraulic generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104242243A true CN104242243A (en) | 2014-12-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310230876.0A Pending CN104242243A (en) | 2013-06-09 | 2013-06-09 | Novel protection device for non-normal shutdown of hydraulic generator |
Country Status (1)
| Country | Link |
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| CN (1) | CN104242243A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0889569A2 (en) * | 1997-06-30 | 1999-01-07 | ABBPATENT GmbH | Installation apparatus |
| CN201202584Y (en) * | 2008-05-26 | 2009-03-04 | 刘志平 | Splashing-proof and signal apparatus of small-sized hydroelectric generating set |
| CN201351572Y (en) * | 2008-02-29 | 2009-11-25 | 丰孝治 | Automatic protection and shutdown device for grid-dropout of small hydraulic generator |
| CN201353849Y (en) * | 2009-03-04 | 2009-12-02 | 东爵有机硅(南京)有限公司 | Automatic brake device of open type glue-smelting machine |
| CN202596973U (en) * | 2012-05-15 | 2012-12-12 | 重庆市合川区供电有限责任公司 | Automatic stopping device for small hydraulic generator set |
| CN203289081U (en) * | 2013-06-09 | 2013-11-13 | 成都昊地科技有限责任公司 | Protective device for abnormal shutdown of novel water wheel generator |
-
2013
- 2013-06-09 CN CN201310230876.0A patent/CN104242243A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0889569A2 (en) * | 1997-06-30 | 1999-01-07 | ABBPATENT GmbH | Installation apparatus |
| CN201351572Y (en) * | 2008-02-29 | 2009-11-25 | 丰孝治 | Automatic protection and shutdown device for grid-dropout of small hydraulic generator |
| CN201202584Y (en) * | 2008-05-26 | 2009-03-04 | 刘志平 | Splashing-proof and signal apparatus of small-sized hydroelectric generating set |
| CN201353849Y (en) * | 2009-03-04 | 2009-12-02 | 东爵有机硅(南京)有限公司 | Automatic brake device of open type glue-smelting machine |
| CN202596973U (en) * | 2012-05-15 | 2012-12-12 | 重庆市合川区供电有限责任公司 | Automatic stopping device for small hydraulic generator set |
| CN203289081U (en) * | 2013-06-09 | 2013-11-13 | 成都昊地科技有限责任公司 | Protective device for abnormal shutdown of novel water wheel generator |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141224 |