CN103383405A - Passive signal voltage detection method - Google Patents
Passive signal voltage detection method Download PDFInfo
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- CN103383405A CN103383405A CN2013102883724A CN201310288372A CN103383405A CN 103383405 A CN103383405 A CN 103383405A CN 2013102883724 A CN2013102883724 A CN 2013102883724A CN 201310288372 A CN201310288372 A CN 201310288372A CN 103383405 A CN103383405 A CN 103383405A
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Abstract
The invention discloses a passive signal voltage detection method. The passive signal voltage detection method includes a voltage detection circuit and an action memorizing device which is connected with the voltage detection circuit, wherein the voltage detection circuit can receive instantaneous voltage or residual voltage to generate input signals, and the input signals drive the action memorizing device to keep the action memorizing device in an action memorizing state. A processor connected with the action memorizing device identifies the action memorizing state to detect the instantaneous voltage and the residual voltage of the circuits of non-powered sections and isolate failure sections.
Description
Technical field
The present invention relates to the power distribution network technical field, particularly a kind of passive signal voltage detection method.
Background technology
Great change along with the modern power systems generation, implement electricity market operating mechanism open and that encourage competition, circuit voltage failure problem in some electric system quality problems, particularly distribution system usually occurs, caused showing great attention to of domestic and international work about electric power person and associated user.
In distribution system; in circuit generation permanent fault; outlet protection action; after one specified time, the reclosing action, coincide with fault or closing by hand in fault, and protective relay is with rear Accelerated trip; the voltage characteristic that shows is exactly the voltage that several cycles occur; then disappear, the voltage of appearance has obvious fault signature, is referred to as instantaneous voltage.
When the instantaneous voltage on existing voltage-time type distribution terminal detection line or residual voltage, must when having power supply and normal operation, distribution terminal just can detect.When instantaneous voltage or residual voltage fault occurring for the section that there is no energising, distribution terminal detects not out, can not realize automatic fault isolation, has to a certain degree defective.
Summary of the invention
For addressing the above problem, the object of the present invention is to provide a kind of passive signal voltage detection method, solve when instantaneous voltage or residual voltage occurring for the section that there is no energising, the problem that distribution terminal can't detect, thus realize automatic fault isolation, eliminate defective.
The present invention solves the technical scheme that its problem adopts:
a kind of passive signal voltage detection method, comprise the voltage detecting loop and with the movement memory device of voltage detecting loop electrical connection, when the input voltage on the voltage detecting loop reaches the magnitude of voltage of setting, the voltage detecting loop produces output signal drive actions memory device, the movement memory device is remembered this output signal and is in the memory hold mode, the electrical connection of movement memory device has processor, described processor is by detecting state recognition instantaneous voltage or the residual voltage fault of movement memory device, described processor makes the movement memory device return to the involution state simultaneously, described involution state is the not state of movement memory device before the drive actions memory device of the output signal that produces of voltage detecting loop.
Described movement memory device adopts self-sustaining midget relay or solid-state relay.
Adopt photoelectric isolating device to isolate between described movement memory device and processor, described photoelectric isolating device and movement memory device, processor electrical connection.
The invention has the beneficial effects as follows:
The present invention adopts a kind of passive signal voltage detection method, when instantaneous voltage or residual voltage appear in the section that there is no energising, distribution terminal is identified this instantaneous voltage or residual voltage, and after detecting, this fault section is isolated, distribution terminal need not can realize by power supply, the defective that can't detect in having eliminated at present.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing and example.
Fig. 1 is voltage detecting loop circuit figure of the present invention;
Fig. 2 is movement memory device circuitry figure of the present invention.
Embodiment
The present invention adopts a kind of passive electrical pressure detection method, voltage detecting loop and movement memory device are installed on the power panel of distribution terminal, instantaneous voltage or the residual voltage that can effectively occur the section of not switching on are identified, and after identification, isolate this fault section.
With reference to voltage detecting loop circuit figure shown in Figure 1, when detecting instantaneous voltage or residual voltage, in figure, 5,6 two pin connect power supply, are used for receiving input voltage, and 7,8 pin connect the movement memory device, 3,10 pin ground connection, and 1,2,4 is three auxiliary foots.Integrated circuit (IC) 1 has 1,2,3 three angle, when the 1 pin input voltage of IC1 during less than 4.25V, and the triode conducting of IC1 inside, the high level that 5,6,7 pin are introduced is through IC1 ground connection; Triode cut-off when the 1 pin input voltage of IC1 IC1 inside during greater than 4.25V, the high level that 7 pin are introduced puncture conducting TR2 after ZD3, make 8 pin ground connection, the drive actions memory device; Puncture ZD2 after the high level that 6 pin are introduced is full of electricity with C3, make the TR1 conducting, at this moment the TR2 base current is shunted by TR1, makes the TR2 cut-off, produces the effect of ONESHOT one shots.
With reference to movement memory device circuitry figure shown in Figure 2, its input end is connected with 7,8 two pin in detecting loop circuit, the movement memory device adopts self-sustaining midget relay or solid-state relay, shown in figure, the movement memory device is connected with processor, described processor is arranged among distribution terminal, is the central processing unit of distribution terminal.The movement memory device has movement memory and keeps and two kinds of forms of involution, corresponding instantaneous voltage or residual voltage fault when the movement memory device is in movement memory maintenance form, and representing when being in the involution form does not have fault.Processor has judged whether instantaneous voltage or residual voltage for detection of the state of movement memory device, and simultaneous processor also is used for recovering the movement memory device to the involution state.Adopt photoelectric isolating device to isolate between movement memory device and processor, photoelectric isolating device is with the driving circuit of correspondence, and described photoelectric isolating device and movement memory device, processor are electrically connected.
when 5 of voltage detecting loop, when 6 pin receive input voltage, when if this input voltage reaches the magnitude of voltage of setting, be that the 1 pin input voltage of IC1 is greater than 4.25V, at this moment, the triode cut-off of IC1 inside, the high level that 7 pin are introduced punctures conducting TR2 after ZD3, make 8 pin ground connection, 7, input signal drive actions memory device between 8 pin, the movement memory device can be remembered this input signal, and remain on the movement memory state, at this moment, when processor detects this movement memory state, show and produced instantaneous voltage or residual voltage fault, just can effectively isolate this fault section.
Need to prove, the instantaneous voltage that the present invention can detect or the scope of residual voltage are more than life period 10ms, and amplitude is 20%Un, and wherein Un is rated voltage.The present invention not only can be applied to distribution terminal, also can be applied to other circuit arrangement.
The above is preferred embodiment of the present invention, and the present invention is not limited to above-mentioned embodiment, as long as it reaches technique effect of the present invention with identical means, all should belong to protection scope of the present invention.
Claims (3)
1. passive signal voltage detection method, it is characterized in that: comprise the voltage detecting loop and with the movement memory device of voltage detecting loop electrical connection, when the input voltage on the voltage detecting loop reaches the magnitude of voltage of setting, the voltage detecting loop produces output signal drive actions memory device, the movement memory device is remembered this output signal and is in the memory hold mode, the electrical connection of movement memory device has processor, described processor is by detecting state recognition instantaneous voltage or the residual voltage fault of movement memory device, described processor makes the movement memory device return to the involution state simultaneously, described involution state is the not state of movement memory device before the drive actions memory device of the output signal that produces of voltage detecting loop.
2. a kind of passive signal voltage detection method according to claim 1, is characterized in that: described movement memory device employing self-sustaining midget relay or solid-state relay.
3. a kind of passive signal voltage detection method according to claim 1, is characterized in that: adopt photoelectric isolating device to isolate between described movement memory device and processor, described photoelectric isolating device and movement memory device, processor electrical connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310288372.4A CN103383405B (en) | 2013-07-10 | 2013-07-10 | A kind of passive signal voltage detection method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310288372.4A CN103383405B (en) | 2013-07-10 | 2013-07-10 | A kind of passive signal voltage detection method |
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| CN103383405A true CN103383405A (en) | 2013-11-06 |
| CN103383405B CN103383405B (en) | 2016-04-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107834521A (en) * | 2017-10-19 | 2018-03-23 | 国网陕西省电力公司电力科学研究院 | A kind of voltage check device and system for Distribution Network Failure processing |
| CN109842211A (en) * | 2019-03-04 | 2019-06-04 | 石家庄科林电气股份有限公司 | A kind of residual voltage detection method of residual voltage logging modle and automatic circuit formula line feed terminals |
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| US4025850A (en) * | 1975-10-01 | 1977-05-24 | Joseph Spiteri | Passive, solid state wide range voltage checker |
| CN1719263A (en) * | 2005-05-24 | 2006-01-11 | 株洲时代电子技术有限公司 | Passive strong isolation micro voltage detection switch |
| CN101453119A (en) * | 2007-11-29 | 2009-06-10 | 上海蓝瑞软件技术有限公司 | Passive damp resistance throw-cut device |
| CN101644727A (en) * | 2008-08-07 | 2010-02-10 | 厦门安达兴电气有限公司 | High-voltage detector |
| CN102175903A (en) * | 2011-02-23 | 2011-09-07 | 湘潭电机股份有限公司 | Passive isolated direct current (DC) voltage detection device for urban railway vehicle |
| CN202533484U (en) * | 2012-01-07 | 2012-11-14 | 中国船舶重工集团公司第七一二研究所 | Direct current voltage detection module for passive photovoltaic cell |
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2013
- 2013-07-10 CN CN201310288372.4A patent/CN103383405B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4025850A (en) * | 1975-10-01 | 1977-05-24 | Joseph Spiteri | Passive, solid state wide range voltage checker |
| CN1719263A (en) * | 2005-05-24 | 2006-01-11 | 株洲时代电子技术有限公司 | Passive strong isolation micro voltage detection switch |
| CN101453119A (en) * | 2007-11-29 | 2009-06-10 | 上海蓝瑞软件技术有限公司 | Passive damp resistance throw-cut device |
| CN101644727A (en) * | 2008-08-07 | 2010-02-10 | 厦门安达兴电气有限公司 | High-voltage detector |
| CN102175903A (en) * | 2011-02-23 | 2011-09-07 | 湘潭电机股份有限公司 | Passive isolated direct current (DC) voltage detection device for urban railway vehicle |
| CN202533484U (en) * | 2012-01-07 | 2012-11-14 | 中国船舶重工集团公司第七一二研究所 | Direct current voltage detection module for passive photovoltaic cell |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107834521A (en) * | 2017-10-19 | 2018-03-23 | 国网陕西省电力公司电力科学研究院 | A kind of voltage check device and system for Distribution Network Failure processing |
| CN109842211A (en) * | 2019-03-04 | 2019-06-04 | 石家庄科林电气股份有限公司 | A kind of residual voltage detection method of residual voltage logging modle and automatic circuit formula line feed terminals |
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| Publication number | Publication date |
|---|---|
| CN103383405B (en) | 2016-04-27 |
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