CN202513674U - Remote alarm device for abnormal current leakage of arrestor - Google Patents
Remote alarm device for abnormal current leakage of arrestor Download PDFInfo
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- CN202513674U CN202513674U CN 201220135825 CN201220135825U CN202513674U CN 202513674 U CN202513674 U CN 202513674U CN 201220135825 CN201220135825 CN 201220135825 CN 201220135825 U CN201220135825 U CN 201220135825U CN 202513674 U CN202513674 U CN 202513674U
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Abstract
The utility model discloses a remote alarm device for abnormal current leakage of an arrestor. The remote alarm device for the abnormal current leakage of the arrestor comprises an abnormal current leakage signal collecting circuit, a signal judging circuit, a communication circuit and an alarm circuit. The abnormal current leakage signal collecting circuit is used for collecting abnormal current signals from a current leakage online monitoring circuit of the arrestor. The signal judging circuit is used for calculating the abnormal signals collected by the abnormal current leakage signal collecting circuit, judging whether the current leakage abnormal signals exceed a constant value transiently or for a long time, and transmitting a judging result to the communication circuit. The communication circuit is used for transmitting the judging result of the current leakage abnormal signals of the arrestor output by the signal judging circuit to a background machine of a converting station and a main machine of a centralized controlled center of the converting station. The alarm circuit is used for sending out an alarm signal under the control of the background machine of the converting station and the main machine of the centralized controlled center of the converting station. The remote alarm device for the abnormal current leakage of the arrestor can carry out real-time monitoring for the operation process of the arrestor, reduce labor intensity of workers, ensure a normal power supply for users, improve power supply reliability and reduce fault rate of power supply units.
Description
Technical field
The utility model relates to a kind of distant place warning device, relates in particular to a kind of unusual distant place of leakage current of an arrester warning device that is applicable to that power system transformer substation is installed.
Background technology
At present, the intelligent grid construction is carried out in China's electric power system comprehensively, and full electric network is carried out Based Intelligent Control, intelligent management and intellectual analysis.Wherein, for the unusual distant place of the leakage current of an arrester alarm technique research that power system transformer substation is installed, also be an important part in the intelligent popularization and application of electrical network.
The leakage current of an arrester of China in the power system transformer substation that moves, circuit, transformer platform district can't be realized real-time monitoring.When lightning arrester breaks down, like protected electric equipment thunderbolt, operating voltage or leakage current take place when unusual, only reliable power supply operator on duty goes to carry out equipment inspection, after the discovery lightning arrester breaks down, keeps in repair again.The method of this artificial maintenance causes the repair time long, and intensity of workers is big, has influence on user's normal power supply simultaneously, has reduced power supply reliability, has increased the spoilage of power supply unit.
The utility model content
The purpose of the utility model provides the unusual distant place of a kind of leakage current of an arrester warning device; Can realize the leakage current of power system transformer substation lightning arrester is monitored in real time; Reduce intensity of workers; Guarantee user's normal power supply, improve power supply reliability, reduce the power supply unit spoilage.
The utility model adopts following technical proposals:
The unusual distant place of a kind of leakage current of an arrester warning device comprises leakage current abnormal signal Acquisition Circuit, is used for gathering the leakage current abnormal signal from leakage current of an arrester on-line monitoring circuit; Signal judging circuit is used for the abnormal signal that leakage current abnormal signal Acquisition Circuit collects is calculated, and judges that the leakage current abnormal signal belongs to instantaneous and surpasses definite value or surpass definite value for a long time, and judged result is sent to telecommunication circuit; Telecommunication circuit is used for the leakage current of an arrester abnormal signal judged result of signal judging circuit output is sent to transformer station's background computer and transformer station's collection control central host; Warning circuit is used under the control of transformer station's background computer and transformer station's collection control central host, sending alarm signal.
Described leakage current abnormal signal Acquisition Circuit comprises first resistance, second resistance, the 3rd resistance, photo resistance and comparator; The unusual warning lamp setting of leakage current of an arrester on-line monitoring circuit is close in photo resistance; One end of first resistance connects power supply, and the other end of first resistance connects the inverting input of comparator, and an end of photo resistance connects the inverting input of comparator; The other end ground connection of photo resistance; One end of second resistance connects power supply, and the other end of second resistance connects the in-phase input end of comparator, and an end of the 3rd resistance connects the comparator in-phase input end; The other end ground connection of the 3rd resistance, the output of comparator connects the input of signal judging circuit.
Described signal judging circuit comprises the A/D change-over circuit, calculates decision circuitry, executive circuit; The signal input part of said A/D change-over circuit connects the output of comparator; The signal output part of A/D change-over circuit connects the signal input part that calculates decision circuitry, and the signal output part that calculates decision circuitry connects the signal input part of executive circuit.
Described executive circuit comprises CPU, relay drive circuit and relay; The signal input part of CPU connects the signal output part that calculates decision circuitry; The output of CPU is through relay drive circuit control connection relay coil, and the normally opened contact of relay is connected on the telecommunication circuit.
Described telecommunication circuit comprises optical fibre communication cable circuit and copper core telecommunication cable circuit; The optical fibre communication cable circuit comprises fiber optic cables and the optical transmission circuit that is used for the signal of telecommunication is changed into light signal; First normally opened contact of described relay is connected on the power circuit of optical transmission circuit; The output of optical transmission circuit connects the input of fiber optic cables, and the output of fiber optic cables connects transformer station's collection control central host; Second normally opened contact of described relay is connected on the copper core telecommunication cable circuit, and the output of copper core telecommunication cable circuit connects transformer station's background computer.
Described telecommunication circuit comprises the first optical fibre communication cable circuit and the second optical fibre communication cable circuit; The optical fibre communication cable circuit comprises fiber optic cables and the optical transmission circuit that is used for the signal of telecommunication is changed into light signal; First normally opened contact of described relay is connected on the power circuit of the first optical fibre communication cable circuit optical transmission circuit; The output of the first optical fibre communication cable circuit optical transmission circuit connects the input of the first optical fibre communication cable circuit fiber optic cables, and the output of the first optical fibre communication cable circuit fiber optic cables connects transformer station's collection control central host; Second normally opened contact of described relay is connected on the power circuit of the second optical fibre communication cable circuit optical transmission circuit; The output of the second optical fibre communication cable circuit optical transmission circuit connects the input of the second optical fibre communication cable circuit fiber optic cables, and the output of the second optical fibre communication cable circuit fiber optic cables connects transformer station's background computer.
Described telecommunication circuit comprises the first bronze medal core telecommunication cable circuit and the second bronze medal core telecommunication cable circuit; First normally opened contact of described relay is connected on the first bronze medal core telecommunication cable circuit, and the output of the first bronze medal core telecommunication cable circuit connects transformer station's collection control central host; Second normally opened contact of described relay is connected on the second bronze medal core telecommunication cable circuit, and the output of the second bronze medal core telecommunication cable circuit connects transformer station's background computer.
Described warning circuit adopts sound light alarming circuit.
The utility model can be monitored the lightning arrester running in real time; When protected electric equipment thunderbolt or generation operating voltage; Or take place can in time notify the staff when unusual when leakage current of an arrester, reduce intensity of workers, guarantee user's normal power supply; Improve power supply reliability, reduce the power supply unit spoilage.
Description of drawings
Fig. 1 is the theory diagram of the utility model;
Fig. 2 is the circuit of the said leakage current abnormal signal of the utility model Acquisition Circuit;
Fig. 3 is the theory diagram of the said signal judging circuit of the utility model;
Fig. 4 is the theory diagram of the said optical fibre communication cable circuit of the utility model.
Embodiment
Extremely shown in Figure 4 like Fig. 1; The utility model comprises leakage current abnormal signal Acquisition Circuit, signal judging circuit, telecommunication circuit and warning circuit; The output of leakage current abnormal signal Acquisition Circuit connects the input of signal judging circuit; The input of the output connection telecommunication circuit of signal judging circuit, telecommunication circuit connect transformer station's background computer and transformer station's collection control central host, and transformer station's background computer collects the input that the signal output part of controlling central host is connected warning circuit with transformer station.
Described leakage current abnormal signal Acquisition Circuit is used for gathering the leakage current abnormal signal from leakage current of an arrester on-line monitoring circuit.Leakage current abnormal signal Acquisition Circuit comprises first resistance R 1, second resistance R 2, the 3rd resistance R 3, photo resistance RL and comparator A; Photo resistance RL is close to the unusual warning lamp setting of leakage current of an arrester on-line monitoring circuit; One end of first resistance R 1 connects power supply, and the other end of first resistance R 1 connects the inverting input of comparator A, and the end of photo resistance RL connects the inverting input of comparator A; The other end ground connection of photo resistance RL; One end of second resistance R 2 connects power supply, and the other end of second resistance R 2 connects the in-phase input end of comparator A, and an end of the 3rd resistance R 3 connects comparator A in-phase input end; The other end ground connection of the 3rd resistance R 3, the output of comparator A connects the input of signal judging circuit.
Described signal judging circuit is used for the abnormal signal that leakage current abnormal signal Acquisition Circuit collects is calculated, and judges that the leakage current abnormal signal belongs to instantaneous and surpasses definite value or surpass definite value for a long time, and judged result is sent to telecommunication circuit.Signal judging circuit comprises the A/D change-over circuit, calculates decision circuitry, executive circuit; The signal input part of said A/D change-over circuit connects the output of comparator A; The signal output part of A/D change-over circuit connects the signal input part that calculates decision circuitry, and the signal output part that calculates decision circuitry connects the signal input part of executive circuit.
Described executive circuit comprises CPU, relay drive circuit and relay; The signal input part of CPU connects the signal output part that calculates decision circuitry; The signal output part of CPU is through relay drive circuit control connection relay coil, and the normally opened contact of relay is connected on the telecommunication circuit.
Described telecommunication circuit is used for the leakage current of an arrester abnormal signal judged result of signal judging circuit output is sent to transformer station's background computer and transformer station's collection control central host.In the present embodiment; Telecommunication circuit adopts optical fibre communication cable circuit and copper core telecommunication cable circuit; The optical fibre communication cable circuit comprises fiber optic cables and the optical transmission circuit that is used for the signal of telecommunication is changed into light signal; First normally opened contact of described relay is connected on the power circuit of optical transmission circuit, and the output of optical transmission circuit connects the input of fiber optic cables, and the output of fiber optic cables connects transformer station's collection control central host; Second normally opened contact of described relay is connected on the copper core telecommunication cable circuit, and the output of copper core telecommunication cable circuit connects transformer station's background computer.
Described telecommunication circuit also can adopt the first optical fibre communication cable circuit and the second optical fibre communication cable circuit; First normally opened contact of described relay is connected on the power circuit of the first optical fibre communication cable circuit optical transmission circuit; The output of the first optical fibre communication cable circuit optical transmission circuit connects the input of the first optical fibre communication cable circuit fiber optic cables, and the output of the first optical fibre communication cable circuit fiber optic cables connects transformer station's collection control central host; Second normally opened contact of described relay is connected on the power circuit of the second optical fibre communication cable circuit optical transmission circuit; The output of the second optical fibre communication cable circuit optical transmission circuit connects the input of the second optical fibre communication cable circuit fiber optic cables, and the output of the second optical fibre communication cable circuit fiber optic cables connects transformer station's background computer.
Described telecommunication circuit can also adopt the first bronze medal core telecommunication cable circuit and the second bronze medal core telecommunication cable circuit; First normally opened contact of described relay is connected on the first bronze medal core telecommunication cable circuit, and the output of the first bronze medal core telecommunication cable circuit connects transformer station's collection control central host; Second normally opened contact of described relay is connected on the second bronze medal core telecommunication cable circuit, and the output of the second bronze medal core telecommunication cable circuit connects transformer station's background computer.
Described warning circuit adopts sound light alarming circuit.
In the present embodiment; During the utility model work, unusual when the leakage current of an arrester generation, the unusual warning lamp of existing leakage current of an arrester on-line monitoring circuit will work long hours luminous; Because photo resistance RL is close to the unusual warning lamp setting of leakage current of an arrester on-line monitoring circuit; Photo resistance RL resistance will change, and this moment, two inputs of comparator A produced voltage difference, and comparator A will give signal judging circuit from output transmission abnormality signal.When protected electric equipment thunderbolt or generation operating voltage; It is instantaneous when surpassing definite value that the leakage current of an arrester abnormal signal belongs to; Will stop after the unusual warning lamp work several seconds of existing leakage current of an arrester on-line monitoring circuit luminous, unusual warning lamp stop luminous after, two input no-voltages of comparator A are poor; Comparator A non-output signal, calculating decision circuitry can be judged and belong to protected electric equipment thunderbolt this moment or operating voltage level takes place; When certain leakage current of an arrester takes place when unusual; The unusual warning lamp of existing leakage current of an arrester on-line monitoring circuit will work long hours; Comparator A will give signal judging circuit from the long-time transmission abnormality signal of output, can judge after the calculating decision circuitry repeated detection to belong to the leakage current of an arrester generation this moment unusually.Calculate decision circuitry judged result is sent to CPU, CPU is distinguished the judged result of calculating decision circuitry through the length of relay drive circuit control relay coil electrify time.When first normally opened contact of relay is closed, the power circuit conducting of optical transmission circuit in the telecommunication circuit, alarm signal can be sent to transformer station's collection control central host through fiber optic cables; When second normally opened contact of relay is closed, copper core telecommunication cable circuit turn-on, alarm signal can be sent to transformer station's background computer through copper core telecommunication cable circuit.At this moment, transformer station's background computer collects the control central host with transformer station and will on screen, show relevant warning message.When the thunderbolt of protected electric equipment or operating voltage takes place, abnormal signal is instantaneous when surpassing definite value, shows on the screen: certain transformer station, certain lightning arrester, overvoltage signal takes place in mutually; When certain leakage current of an arrester takes place unusually, abnormal signal be during for a long time above definite value, and what show on the screen is certain transformer station, certain lightning arrester, certain leakage current overdetermination value signal takes place mutually.Simultaneously, transformer station's background computer and transformer station's collection control central host can be carried out the sound and light alarm prompting to the staff through warning circuit, and the prompting staff keeps in repair.
Above embodiment only in order to the explanation the utility model technical scheme but not to its restriction; Although with reference to preferred embodiment the utility model has been carried out detailed explanation, the those of ordinary skill in affiliated field is to be understood that: still can make amendment to the embodiment of the utility model perhaps is equal to replacement to the part technical characterictic; And not breaking away from the spirit of the utility model technical scheme, it all should be encompassed in the middle of the technical scheme scope that the utility model asks for protection.
Claims (8)
1. the unusual distant place of a leakage current of an arrester warning device is characterized in that: comprise leakage current abnormal signal Acquisition Circuit, be used for gathering the leakage current abnormal signal from leakage current of an arrester on-line monitoring circuit; Signal judging circuit is used for the abnormal signal that leakage current abnormal signal Acquisition Circuit collects is calculated, and judges that the leakage current abnormal signal belongs to instantaneous and surpasses definite value or surpass definite value for a long time, and judged result is sent to telecommunication circuit; Telecommunication circuit is used for the leakage current of an arrester abnormal signal judged result of signal judging circuit output is sent to transformer station's background computer and transformer station's collection control central host; Warning circuit is used under the control of transformer station's background computer and transformer station's collection control central host, sending alarm signal.
2. the unusual distant place of leakage current of an arrester according to claim 1 warning device; It is characterized in that: described leakage current abnormal signal Acquisition Circuit comprises first resistance, second resistance, the 3rd resistance, photo resistance and comparator, and the unusual warning lamp setting of leakage current of an arrester on-line monitoring circuit is close in photo resistance, and an end of first resistance connects power supply; The other end of first resistance connects the inverting input of comparator; One end of photo resistance connects the inverting input of comparator, the other end ground connection of photo resistance, and an end of second resistance connects power supply; The other end of second resistance connects the in-phase input end of comparator; One end of the 3rd resistance connects the comparator in-phase input end, the other end ground connection of the 3rd resistance, and the output of comparator connects the input of signal judging circuit.
3. the unusual distant place of leakage current of an arrester according to claim 2 warning device; It is characterized in that: described signal judging circuit comprises the A/D change-over circuit, calculates decision circuitry, executive circuit; The signal input part of said A/D change-over circuit connects the output of comparator; The signal output part of A/D change-over circuit connects the signal input part that calculates decision circuitry, and the signal output part that calculates decision circuitry connects the signal input part of executive circuit.
4. the unusual distant place of leakage current of an arrester according to claim 3 warning device; It is characterized in that: described executive circuit comprises CPU, relay drive circuit and relay; The signal input part of CPU connects the signal output part that calculates decision circuitry; The output of CPU is through relay drive circuit control connection relay coil, and the normally opened contact of relay is connected on the telecommunication circuit.
5. the unusual distant place of leakage current of an arrester according to claim 4 warning device; It is characterized in that: described telecommunication circuit comprises optical fibre communication cable circuit and copper core telecommunication cable circuit; The optical fibre communication cable circuit comprises fiber optic cables and the optical transmission circuit that is used for the signal of telecommunication is changed into light signal; First normally opened contact of described relay is connected on the power circuit of optical transmission circuit; The output of optical transmission circuit connects the input of fiber optic cables, and the output of fiber optic cables connects transformer station's collection control central host; Second normally opened contact of described relay is connected on the copper core telecommunication cable circuit, and the output of copper core telecommunication cable circuit connects transformer station's background computer.
6. the unusual distant place of leakage current of an arrester according to claim 4 warning device; It is characterized in that: described telecommunication circuit comprises the first optical fibre communication cable circuit and the second optical fibre communication cable circuit; The optical fibre communication cable circuit comprises fiber optic cables and the optical transmission circuit that is used for the signal of telecommunication is changed into light signal; First normally opened contact of described relay is connected on the power circuit of the first optical fibre communication cable circuit optical transmission circuit; The output of the first optical fibre communication cable circuit optical transmission circuit connects the input of the first optical fibre communication cable circuit fiber optic cables, and the output of the first optical fibre communication cable circuit fiber optic cables connects transformer station's collection control central host; Second normally opened contact of described relay is connected on the power circuit of the second optical fibre communication cable circuit optical transmission circuit; The output of the second optical fibre communication cable circuit optical transmission circuit connects the input of the second optical fibre communication cable circuit fiber optic cables, and the output of the second optical fibre communication cable circuit fiber optic cables connects transformer station's background computer.
7. the unusual distant place of leakage current of an arrester according to claim 4 warning device; It is characterized in that: described telecommunication circuit comprises the first bronze medal core telecommunication cable circuit and the second bronze medal core telecommunication cable circuit; First normally opened contact of described relay is connected on the first bronze medal core telecommunication cable circuit, and the output of the first bronze medal core telecommunication cable circuit connects transformer station's collection control central host; Second normally opened contact of described relay is connected on the second bronze medal core telecommunication cable circuit, and the output of the second bronze medal core telecommunication cable circuit connects transformer station's background computer.
8. according to claim 5, the unusual distant place of 6 or 7 described leakage currents of an arrester warning device, it is characterized in that: described warning circuit adopts sound light alarming circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220135825 CN202513674U (en) | 2012-04-01 | 2012-04-01 | Remote alarm device for abnormal current leakage of arrestor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220135825 CN202513674U (en) | 2012-04-01 | 2012-04-01 | Remote alarm device for abnormal current leakage of arrestor |
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| Publication Number | Publication Date |
|---|---|
| CN202513674U true CN202513674U (en) | 2012-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220135825 Expired - Fee Related CN202513674U (en) | 2012-04-01 | 2012-04-01 | Remote alarm device for abnormal current leakage of arrestor |
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| CN (1) | CN202513674U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102629780A (en) * | 2012-04-01 | 2012-08-08 | 河南省电力公司驻马店供电公司 | Remote warning device for leakage current abnormities of lightning arrester |
-
2012
- 2012-04-01 CN CN 201220135825 patent/CN202513674U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102629780A (en) * | 2012-04-01 | 2012-08-08 | 河南省电力公司驻马店供电公司 | Remote warning device for leakage current abnormities of lightning arrester |
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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 |
Granted publication date: 20121031 Termination date: 20150401 |
|
| EXPY | Termination of patent right or utility model |