CN102879628B - Charged detecting circuit for forcible locking device - Google Patents
Charged detecting circuit for forcible locking device Download PDFInfo
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- CN102879628B CN102879628B CN201110193769.6A CN201110193769A CN102879628B CN 102879628 B CN102879628 B CN 102879628B CN 201110193769 A CN201110193769 A CN 201110193769A CN 102879628 B CN102879628 B CN 102879628B
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- 238000001514 detection method Methods 0.000 claims description 11
- 230000000903 blocking effect Effects 0.000 claims description 2
- 230000005611 electricity Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
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Abstract
The invention discloses a charged detecting circuit for a forcible locking device. The charged detecting circuit is connected with a three-phase high-voltage sensor. The charged detecting circuit comprises a charged display circuit and a timing electrifying circuit, wherein the charged display circuit and the timing electrifying circuit are interconnected; and the charged displaying circuit is used for receiving a sensor signal, displaying the charged condition, and outputting a high-low level signal to the timing electrifying circuit. With the adoption of the charged detecting circuit for the forcible locking device provided by the invention, the high-voltage charged condition can be detected and displayed; and the forcible locking device can be driven to be unlocked after determining that no high-voltage charged circumstance occurs, and the safety is improved.
Description
Technical field
The present invention relates to a kind of electrified detection circuit for forced locking device.
Background technology
Ring main unit is simple and reliable due to it, use in a large number in the supplying power allocation network in city, but the wire inlet unit of ring main unit is all the situation of lower inlet wire, adopt conventional electromagnetic lock closedown mode scene often due to electromagnetic lock cannot be provided to control power supply, and adopt emergency release to operate, now make the error-proof device of ring main unit itself reduce reliability, just likely occur the pernicious maloperation that can not prevent charged conjunction grounding switch.Therefore, must control the operation of grounding switch, namely when on-load switch separating brake, must judge whether long cable section of ingoing line line side has electricity, just allow when only having cable not charged to close grounding switch, traditional method is to ground connection switching manipulation hole padlock, artificial judgment is carried out by operating personnel when operational grounding switch, operate without unlocking during electricity at cable, but manually carry out differentiating the possibility always having and make mistakes, make distribution operation and life security presence hidden danger.
Summary of the invention
The object of the invention is to overcome the defect of prior art and a kind of electrified detection circuit for forced locking device is provided, it can detect and show electrification in high voltage situation, when confirming without electrification in high voltage, driving forced locking device to unlock, improving security.
The technical scheme realizing above-mentioned purpose is:
A kind of electrified detection circuit for forced locking device, it connects three-phase high-voltage sensor, described electrified detection circuit comprises an interconnective charged display circuit and a timing power-on circuit, described charged display circuit sensor-lodging, display charged state, export high and low level signal to described timing energization circuit, wherein:
Described charged display circuit comprises three identical unit, each unit comprises a rectifier bridge, first ac input end of this rectifier bridge connects one first resistance, second ac input end ground connection, first DC output end of described rectifier bridge connects the second resistance, the 3rd resistance and a diode successively, and the second DC output end connects one the 4th resistance; Described each unit also comprises one first electric capacity and a light emitting diode, one end of described first electric capacity connects the end that connects of described second resistance and the 3rd resistance, the other end connects the second DC output end of described rectifier bridge, the positive pole of described light emitting diode connects the end that connects of described second resistance and the 3rd resistance, and negative pole connects the second DC output end of described rectifier bridge; The positive pole of described diode connects described 3rd resistance, and negative pole connects the first output terminal of described charged display circuit; Described 4th resistance connects the second output terminal of described charged display circuit;
Described charged display circuit also comprises and is connected in parallel on 1 on two output terminal the 5th resistance and one second electric capacity;
The switch driver that described timing energization circuit is comprised a signal control drive circuit, is connected by plug connector with this signal control drive circuit, described signal control drive circuit connects two output terminals of described charged display circuit, and described switch driver connects and controls a driving switch.
The above-mentioned electrified detection circuit for forced locking device, wherein, described switch driver and a regular tap, a direct current electric power generating composition loop.
The above-mentioned electrified detection circuit for forced locking device, wherein, three described the first resistance connect three-phase high-voltage bus by described three-phase high-voltage sensor.
The invention has the beneficial effects as follows: the present invention can detect and show electrification in high voltage situation, when confirming without electrification in high voltage, driving forced locking device to unlock, improving security; Meanwhile, when performing unlock command, its energy timing energization, reduces power consumption.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of the electrified detection circuit for forced locking device of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Refer to Fig. 1, a kind of electrified detection circuit for forced locking device of the present invention, comprises interconnective charged display circuit 1 and timing energization circuit 2,
Charged display circuit 1 comprises three identical unit, each unit comprises a rectifier bridge (U1 or U2 or U3), first ac input end of rectifier bridge (U1 or U2 or U3) connects one first resistance (Ra1 or Rb1 or Rc1), second ac input end ground connection, first DC output end of rectifier bridge (U1 or U2 or U3) connects the second resistance (Ra2 or Rb2 or Rc2), the 3rd resistance (Ra3 or Rb3 or Rc3) and diode (Da or Db or Dc) successively, and the second DC output end connects one the 4th resistance (Ra4 or Rb4 or Rc4);
Each unit also comprises one first electric capacity (C1 or C2 or C3) and a light emitting diode (D1 or D2 or D3), one end of first electric capacity (C1 or C2 or C3) connects the end that connects of the second resistance (Ra2 or Rb2 or Rc2) and the 3rd resistance (Ra3 or Rb3 or Rc3), the other end connects the second DC output end of rectifier bridge (U1 or U2 or U3), the positive pole of light emitting diode (D1 or D2 or D3) connects the end that connects of the second resistance (Ra2 or Rb2 or Rc2) and the 3rd resistance (Ra3 or Rb3 or Rc3), negative pole connects the second DC output end of rectifier bridge (U1 or U2 or U3),
The positive pole of diode (Da or Db or Dc) connects the 3rd resistance (Ra3 or Rb3 or Rc3), the first output terminal of negative connecting strap electricity display circuit 1; 4th resistance (Ra4 or Rb4 or Rc4) connects the second output terminal of charged display circuit 1;
Charged display circuit 1 also comprises and is connected in parallel on the 5th resistance R on two output terminal and the second electric capacity C.
The switch driver 22 that timing energization circuit 2 is comprised signal control drive circuit 21, is connected by plug connector X with signal control drive circuit 21, signal control drive circuit 21 connects two output terminals of charged display circuit 1, and switch driver 22 connects and controls a driving switch K1.
Switch driver 22 and a regular tap K2, a direct supply V form loop.
First resistance (Ra1, Rb1, Rc1) connects three-phase high-voltage bus (not shown) by three-phase high-voltage sensor 3.
In the present embodiment, the model that switch driver 33 is selected is SA/S2.10.1.
Principle of work of the present invention: charged display circuit 1 receives three-phase high-voltage sensor signal, shows whether electrification in high voltage.When electrification in high voltage, light emitting diode (D1, D2, D3) is bright, charged display circuit 1 exports a low level signal, press regular tap K2, switch driver 22 controls driving switch K1 and closes, and connection signal controls driving circuit 21 in short-term, because signal control drive circuit 21 receives low level signal, do not drive electromagnetic lock 4, make forced locking device be in blocking; When without electrification in high voltage, light emitting diode (D1, D2, D3) does not work, charged display circuit 1 exports a high level signal, press regular tap K2, switch driver 22 controls driving switch K1 and closes, and connection signal controls driving circuit 21 in short-term, because signal control drive circuit 21 receives high level signal, drive electromagnetic lock 4, thus forced locking device is unlocked.
Above-described embodiment is available to be familiar with person in the art to realize or to use of the present invention; those skilled in the art can be without departing from the present invention in the case of the inventive idea; various modifications or change are made to above-described embodiment; thus protection scope of the present invention not limit by above-described embodiment, and should be the maximum magnitude meeting the inventive features that claims are mentioned.
Claims (1)
1. the electrified detection circuit for forced locking device, it connects three-phase high-voltage sensor, it is characterized in that, described electrified detection circuit comprises an interconnective charged display circuit and a timing power-on circuit, described charged display circuit sensor-lodging, display charged state, exports high and low level signal to described timing energization circuit, wherein:
Described charged display circuit comprises three identical unit be connected in parallel, each unit comprises a rectifier bridge, first ac input end of this rectifier bridge connects one first resistance, second ac input end ground connection, first DC output end of described rectifier bridge connects the second resistance, the 3rd resistance and a diode successively, and the second DC output end connects one the 4th resistance; Described each unit also comprises one first electric capacity and a light emitting diode, one end of described first electric capacity connects the end that connects of described second resistance and the 3rd resistance, the other end connects the second DC output end of described rectifier bridge, the positive pole of described light emitting diode connects the end that connects of described second resistance and the 3rd resistance, and negative pole connects the second DC output end of described rectifier bridge; The positive pole of described diode connects described 3rd resistance, and negative pole connects the first output terminal of described charged display circuit; Described 4th resistance connects the second output terminal of described charged display circuit;
Described charged display circuit also comprises and is connected in parallel on 1 on two output terminal the 5th resistance and one second electric capacity;
The switch driver that described timing energization circuit is comprised a signal control drive circuit, is connected by plug connector with this signal control drive circuit, described signal control drive circuit connects two output terminals of described charged display circuit, described switch driver connects and controls a driving switch
Described switch driver and a regular tap, a direct current electric power generating composition loop,
Three described the first resistance connect three-phase high-voltage bus by described three-phase high-voltage sensor,
Described charged display circuit receives extraneous three-phase high-voltage sensor signal, show whether electrification in high voltage, when electrification in high voltage, described light emitting diode is bright, and described charged display circuit exports a low level signal, presses described regular tap, described switch driver controls described driving switch and closes, connect described signal control drive circuit in short-term, because described signal control drive circuit receives low level signal, make described forced locking device be in blocking; When without electrification in high voltage, described light emitting diode does not work, described charged display circuit exports a high level signal, press described regular tap, described switch driver controls described driving switch and closes, connect described signal control drive circuit in short-term, because signal control drive circuit 21 receives high level signal, thus described forced locking device is unlocked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110193769.6A CN102879628B (en) | 2011-07-12 | 2011-07-12 | Charged detecting circuit for forcible locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110193769.6A CN102879628B (en) | 2011-07-12 | 2011-07-12 | Charged detecting circuit for forcible locking device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102879628A CN102879628A (en) | 2013-01-16 |
| CN102879628B true CN102879628B (en) | 2015-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110193769.6A Active CN102879628B (en) | 2011-07-12 | 2011-07-12 | Charged detecting circuit for forcible locking device |
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| CN (1) | CN102879628B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107293087A (en) * | 2016-03-30 | 2017-10-24 | 国网辽宁省电力有限公司本溪供电公司 | A kind of powered earthing alarm unit by mistake of 10kV high-tension switch cabinets |
| CN105974182A (en) * | 2016-07-14 | 2016-09-28 | 国网江苏省电力公司宿迁供电公司 | High-voltage switchgear bus live-line voice and short-message prompt apparatus |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2497317Y (en) * | 2001-02-13 | 2002-06-26 | 福州福开天宝电器有限公司 | Passive-driven photosolating high-voltage live-display protector |
| CN200962129Y (en) * | 2006-11-01 | 2007-10-17 | 珠海优特电力科技股份有限公司 | A high voltage electrification display lock device |
| CN101867159A (en) * | 2009-04-17 | 2010-10-20 | 常州帕斯菲克自动化技术有限公司 | Device for preventing high-voltage switch cabinet from being locked by mistake |
| CN201780325U (en) * | 2010-07-13 | 2011-03-30 | 珠海共创电力安全技术股份有限公司 | High-voltage charged display |
| CN202150686U (en) * | 2011-07-12 | 2012-02-22 | 上海市电力公司 | Electrified detection circuit used for forced blocking device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2684780B2 (en) * | 1989-07-06 | 1997-12-03 | 株式会社明電舎 | Three-phase voltage detector for high-voltage equipment |
| KR20110022136A (en) * | 2009-08-27 | 2011-03-07 | 엘지이노텍 주식회사 | Circuit for sensing input voltage |
-
2011
- 2011-07-12 CN CN201110193769.6A patent/CN102879628B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2497317Y (en) * | 2001-02-13 | 2002-06-26 | 福州福开天宝电器有限公司 | Passive-driven photosolating high-voltage live-display protector |
| CN200962129Y (en) * | 2006-11-01 | 2007-10-17 | 珠海优特电力科技股份有限公司 | A high voltage electrification display lock device |
| CN101867159A (en) * | 2009-04-17 | 2010-10-20 | 常州帕斯菲克自动化技术有限公司 | Device for preventing high-voltage switch cabinet from being locked by mistake |
| CN201780325U (en) * | 2010-07-13 | 2011-03-30 | 珠海共创电力安全技术股份有限公司 | High-voltage charged display |
| CN202150686U (en) * | 2011-07-12 | 2012-02-22 | 上海市电力公司 | Electrified detection circuit used for forced blocking device |
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| CN102879628A (en) | 2013-01-16 |
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