CN101644727A - High-voltage detector - Google Patents
High-voltage detector Download PDFInfo
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- CN101644727A CN101644727A CN200810071559A CN200810071559A CN101644727A CN 101644727 A CN101644727 A CN 101644727A CN 200810071559 A CN200810071559 A CN 200810071559A CN 200810071559 A CN200810071559 A CN 200810071559A CN 101644727 A CN101644727 A CN 101644727A
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Abstract
The invention discloses a detection and indication device and particularly relates to a high-voltage live displaying device for a high-voltage power transmission system. The high voltage detector consists of a detection capacitor, a coupling module, a voltage limit protection module, a signal processing module, a power supply source and a display part, wherein the modules are sequentially and electrically connected. More importantly, the high voltage detector also comprises an optical fiber. The display part controls an electrical level through the output of the signal processing module to trigger an electroluminescent body to emit light and an optical signal is transmitted to a display part by the optical fiber to be displayed. In addition, the signal processing module is a voltage comparator, and the power supply source divides voltage and gets electricity from a detected high voltage. Therefore, the high-voltage detector can completely and electrically isolate the display part fromthe detection part, retain a phase-verification function and can detect high-voltage lines in a large range.
Description
Technical field
A kind of device that detects indication of the utility model relates in particular to a kind of electrification in high voltage pick-up unit that is used for the high-pressure delivery electric system.
Background technology
In the high-pressure delivery electric system, the voltage tens of two-stage conveying electric system also belongs to high pressure range to the hundreds of kilovolt.But, usually need to monitor the running status of this electrical network for safeguarding the two-stage conveying electric system.So just need a kind of equipment to be applied in the high voltage electric equipments such as the various ring main units of electric system, high-tension switch cabinet, cable branch box, the information of the monitored place of high voltage electric equipment main circuit voltage state can reliably be provided, and can prevent effectively that high-tension apparatus from destroying because of High-Voltage Insulation, guidance panel before the direct introducing equipment of high pressure, thus the electric power maintenance personnel possibility of getting an electric shock caused.State compulsion requires high voltage electric equipment must install and use high-voltage charge display device, to prevent electric power maintenance personnel's error shock.
High-voltage charge display device generally adopts electromagnetic induction principle to detect or is connected on detection capacitance partial pressure signal on the hi-line and detects and indicate.The employing electromagnetic induction principle, need carry out anti-electromagnetic interference (EMI) and handle, because electromagnetic field is interactive, if no matter which kind of anti-electromagnetic interference (EMI) is handled, the environment that this equipment is installed on the high pressure forceful electric power will inevitably be interfered.Perhaps adopt detection capacitance partial pressure signal to detect; but owing to directly be connected with high-tension line; when High-Voltage Insulation destroys; have high pressure import operation panel, cause the danger that operating personnel get an electric shock, therefore; need circuit is protected; prevention is dangerous, but no matter adopts which kind of overvoltage protection mode, the hidden danger that still exists the holding circuit fault to cause.The display part of high-voltage charge display device all is to be indicated by the luminous light that carries out of the current drives electroluminor of circuit.
Therefore need a kind of a kind of high-voltage detector that can fully electricity be isolated, can keep apart the electricity of test section and display part fully, and can also keep the phase place veritification function of original high-voltage charge display device.In addition, electronic component such as discharge tube constitutes conventional high-voltage detector because its signal processing module is generally, so the voltage range of its detection is restricted.
Summary of the invention
For addressing the above problem, the invention provides a kind of a kind of high pressure pick-up unit that electricity separates, can carry out electric phase place veritification fully and can be good at dust and moisture that can in a big way, detect high pressure, shows and detect.
For achieving the above object, the present invention adopts following technical scheme:
A kind of high-voltage detector is made of detection electric capacity, coupling module, voltage-limiting protection module, signal processing module, power supply source, display part, order electrically connect between the described module.Main, also comprising optical fiber, described display part is luminous by signal processing module output control level triggering electroluminor, light signal shows by described Optical Fiber Transmission to display part.
Further, the display part is the display panel that includes the scatterer that an energy disperses the light of optical fiber, and scatterer can be frosted glass, diffuse scattering lampshade etc.
Further, optical fiber incoming light signal display device display light signal can be carried out the phase place of high-tension electricity and veritifies.
Further, described electroluminor is LED.
In addition, described signal processing module is a voltage comparator; Described power supply source is from the power taking of detected high-tension line dividing potential drop.
Further, described voltage comparator is the fixed value voltage comparer.
Further, described fixed value voltage comparer is chip BL8506.
Voltage clamp circuit is arranged before the voltage comparator, guarantee voltage comparator one in a big way in operate as normal.
Further, described power supply source is that detected high pressure is connected successively and detected electric capacity, the second dividing potential drop electric capacity (C2), the 3rd dividing potential drop electric capacity (C3) back ground connection, power taking in the middle of the second dividing potential drop electric capacity (C2) and the 3rd dividing potential drop electric capacity (C3).
Further, described voltage-limiting protection module is the butt joints of two stabilivolts.
Perhaps described voltage-limiting protection module can be discharge tube, anti-thunder tube, bi-directional voltage stabilizing pipe.
This device forms through the epoxy resin dosing technology.
The present invention adopts technique scheme, has following advantage:
1, display part of the present invention is luminous by signal processing module output control level triggering electroluminor, and light signal shows by described Optical Fiber Transmission to display part.By the mode of electrical-optical, isolation detection part and indicating section are more safe and reliable fully.
2, the present invention still can carry out the phase place of high-tension electricity and veritify by optical fiber being linked into the light signal of display device.
3, the present invention is by adopting voltage comparator chip and corresponding clamping circuit, so can make the utility model in bigger voltage range work.
4, integral body of the present invention forms through the epoxy resin dosing technology, can be good at dust and moisture.
Description of drawings
In conjunction with the accompanying drawings the utility model is further specified now.
Fig. 1 circuit theory diagrams of the present utility model;
The oscillogram that Fig. 2 the utility model phase place is veritified.
Embodiment
As shown in Figure 1, the present invention is a kind of high-voltage detector, is made of order electrically connect between the described module detection electric capacity, coupling module, voltage-limiting protection module, signal processing module, power supply source, display part.It also includes optical fiber, and described display part is luminous by signal processing module output control level triggering electroluminor, and light signal shows by described Optical Fiber Transmission to display part.
Optical Fiber Transmission is to utilize the harmless substantially transmission of carrying out of light total reflection in optical fiber, and this is the ripe technology of using, and launches no longer in detail in this, can consult data of literatures.Because adopting Optical Fiber Transmission is by the mode of electrical-optical the part of electricity to be isolated fully, safer, from the leakage of the electric current of electricity-electric work mode of having solved conventional high-voltage charge display device in essence and the electromagnetic interference problem of electricity-magnetic working method.Because of the good antijamming capability of Optical Fiber Transmission, under the forceful electric power environment, can guarantee reliably working of the present utility model.
Further, the display part is the display panel that includes the scatterer that an energy disperses the light of optical fiber, and scatterer can be frosted glass, diffuse scattering lampshade etc., and scatterer can adopt coloured to show the pilot light of respective color.Nearest embodiment of the present utility model promptly adopts red vaporific glass face shield to show, when the light of fiber port is incident to red vaporific glass face shield, light will evenly be scattered, and red vaporific glass face shield sends uniform ruddiness, as charged indication.
Can be linked into the light signal of display device by optical fiber, carry out the phase place of high-tension electricity and veritify.Because signal processing module adopts the control conducting controllable silicon Q2 of voltage comparable chip, so its output conducting square wave makes that luminous (the utility model preferred forms adopts LED to electroluminor, the little luminescence efficiency height of its power consumption), by optical fiber the light square-wave signal is transmitted.As shown in Figure 2, though there is not the sinusoidal waveform that directly shows tested high pressure, the dutycycle of the square wave of each phase but all is the same, and the phase differential of each phase square wave also is relatively-stationary.Therefore by the phase differential of light signal display device display light signal square waveform, whether the phase place that just can judge tested high pressure indirectly mistake.
In addition, described signal processing module is a voltage comparator; Described power supply source is from the power taking of tested high pressure dividing potential drop.
Further, described voltage comparator is the fixed value voltage comparer.In most preferred embodiment, fixed value voltage comparer of the present utility model is chip BL8506 (U1).This chip has three ends, is respectively VCC, GND, OUT port, and the VCC termination detects voltage, and GND holds ground connection, and the OUT end is exportable comparative voltage signal.
Voltage clamp circuit is arranged before the voltage comparator, dock voltage clamp that realizes bi-directional voltage stabilizing and the effect that voltage-limiting protection is also arranged by two stabilivolts (D1, D2) opposite polarity.And chip BL8506 (U1) self also can extremely wide operating voltage range (0.7V＜VCC＜10V), guarantee voltage comparator one in a big way in operate as normal, so the utility model can carry out the high pressure detection in the scope of broad relatively.
Further, described power supply source is that tested high pressure is connected successively and detected electric capacity, the second dividing potential drop electric capacity (C2), the 3rd dividing potential drop electric capacity (C3) back ground connection, power taking in the middle of the second dividing potential drop electric capacity (C2) and the 3rd dividing potential drop electric capacity (C3).By choosing the dividing potential drop of carrying out of different capacitances, directly, be used for circuit working and provide the luminous work of pilot lamp to carry out the light signal transmission from tested high-tension line intercepting voltage, locate to obtain the sampled voltage signal at the 3rd dividing potential drop electric capacity (C3) simultaneously, detect.By such plain mode with regard to the fine combination that realized device operating voltage and tested voltage sample and without external power supply.
Further, described voltage-limiting protection module is the butt joints of two stabilivolts.First stabilivolt (D1) negative pole and second stabilivolt (D2) negative pole connect.
Perhaps described voltage-limiting protection module can be discharge tube, anti-thunder tube, bi-directional voltage stabilizing pipe.The utility model realizes that by the mode of Optical Fiber Transmission electricity is isolated completely, therefore also can be without voltage-limiting protection.
The circuit diagram of nearest embodiment of the present utility model as shown in Figure 1.Tested high pressure begins to connect successively and detects electric capacity, the second dividing potential drop electric capacity (C2), the 3rd dividing potential drop electric capacity (C3) back ground connection, detects from the middle power taking of the second dividing potential drop electric capacity (C2) and the 3rd dividing potential drop electric capacity (C3); Detect electric capacity, that second dividing potential drop electric capacity (C2) the middle-end dividing potential drop power taking offers LED 1 is luminous.Detection signal behind the second dividing potential drop electric capacity (C2) is through the VCC end of electric capacity (C4) and diode (D5) input comparator chip (U1), go back and connect two shunt in the middle of electric capacity (C4) and the diode (D5), wherein one the tunnel is two stabilivolts (D1, D2) butt joints, and another road is diode (D3) and resistance (R1) serial connection.Comparer chip (U1) output terminal OUT connects the conducting of the b end control triode (Q1) of triode (Q1) through resistance (R4).The c of triode (Q1) and e end connect the input end and the control end of controllable silicon (Q2) respectively, control the conducting of controllable silicon (Q2) by the conducting of triode (Q1).The output terminal serial connection current-limiting resistance (R3) and the light emitting diode (LED1) of controllable silicon (Q2).Its input end is circuit serial connection electric capacity (C5), diode (D6), a bilateral diode (D7) behind monitoring electric capacity.One road diode (D4) series resistor (R2) back is arranged in addition in addition to ground in the middle of electric capacity (C5) and the diode (D6); Have one the tunnel in the middle of diode (D6) and the bilateral diode (D7) in addition through arriving ground behind the electric capacity (C6).
Integral body of the present invention forms through the epoxy resin dosing technology.Can ensure the good dust and moisture effect of this high-voltage detector.
Claims (10)
1, a kind of high-voltage detector is made of detection electric capacity, coupling module, voltage-limiting protection module, signal processing module, power supply source, display part, order electrically connect between the described module; It is characterized in that: also comprise optical fiber, described display part is luminous by signal processing module output control level triggering electroluminor, and light signal shows by described Optical Fiber Transmission to display part.
2, a kind of high-voltage detector as claimed in claim 1 is characterized in that: the display part is a scatterer that the light of optical fiber is dispersed, as frosted glass, diffuse scattering lampshade.
3, a kind of high-voltage detector as claimed in claim 1 or 2 is characterized in that: optical fiber incoming light signal display device display light signal can be carried out the phase place of high-tension electricity and veritifies.
4, a kind of high-voltage detector as claimed in claim 1 is characterized in that: described electroluminor is LED.
5, a kind of high-voltage detector as claimed in claim 1 is characterized in that: described signal processing module is a voltage comparator; Described power supply source is from the power taking of detected high-tension line dividing potential drop.
6, a kind of high-voltage detector as claimed in claim 4 is characterized in that: described voltage comparator is the fixed value voltage comparer.
7, a kind of high-voltage detector as claimed in claim 5 is characterized in that: described fixed value voltage comparer is chip BL8506.
8, a kind of high-voltage detector as claimed in claim 4, it is characterized in that: described power supply source is that tested high pressure is connected successively and detected electric capacity, the second dividing potential drop electric capacity (C2), the 3rd dividing potential drop electric capacity (C3) back ground connection, power taking in the middle of the second dividing potential drop electric capacity (C2) and the 3rd dividing potential drop electric capacity (C3).
9, a kind of high-voltage detector as claimed in claim 1 is characterized in that: described voltage-limiting protection module is the butt joints of two stabilivolts.
10, as the arbitrary described electrification in high voltage monitoring indicating device of claim 1-8, it is characterized in that: device is whole to form through the epoxy resin dosing technology.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100715598A CN101644727B (en) | 2008-08-07 | 2008-08-07 | High-voltage detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100715598A CN101644727B (en) | 2008-08-07 | 2008-08-07 | High-voltage detector |
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| Publication Number | Publication Date |
|---|---|
| CN101644727A true CN101644727A (en) | 2010-02-10 |
| CN101644727B CN101644727B (en) | 2012-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100715598A Expired - Fee Related CN101644727B (en) | 2008-08-07 | 2008-08-07 | High-voltage detector |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101964648A (en) * | 2010-04-12 | 2011-02-02 | 湖北大学 | High-threshold value voltage comparison circuit consisting of high-precision low-voltage comparator |
| 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 |
| CN102236041A (en) * | 2010-04-29 | 2011-11-09 | 永济新时速电机电器有限责任公司 | Voltage detection displaying device |
| CN103383405A (en) * | 2013-07-10 | 2013-11-06 | 珠海许继芝电网自动化有限公司 | Passive signal voltage detection method |
| CN104076257A (en) * | 2014-06-26 | 2014-10-01 | 国网上海市电力公司 | Measurement protection device for power-frequency voltage-withstanding test of insulation tool |
| CN109936124A (en) * | 2017-12-15 | 2019-06-25 | 中兴通讯股份有限公司 | A kind of Security Unit |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1019332B (en) * | 1989-07-22 | 1992-12-02 | 云南省电力工业局试验研究所 | On-line overvoltage monitor for electric power system |
| CN2264296Y (en) * | 1995-12-28 | 1997-10-08 | 宋海军 | Rainbow lamp |
| CN2674460Y (en) * | 2004-02-03 | 2005-01-26 | 天津市华电电力科技有限公司 | Equipotential flash type high-voltage charge display device |
-
2008
- 2008-08-07 CN CN2008100715598A patent/CN101644727B/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101964648A (en) * | 2010-04-12 | 2011-02-02 | 湖北大学 | High-threshold value voltage comparison circuit consisting of high-precision low-voltage comparator |
| CN101964648B (en) * | 2010-04-12 | 2012-06-27 | 湖北大学 | High-threshold value voltage comparison circuit consisting of high-precision low-voltage comparator |
| CN102236041A (en) * | 2010-04-29 | 2011-11-09 | 永济新时速电机电器有限责任公司 | Voltage detection displaying device |
| CN102236041B (en) * | 2010-04-29 | 2013-05-08 | 永济新时速电机电器有限责任公司 | Voltage detection displaying device |
| 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 |
| CN102175903B (en) * | 2011-02-23 | 2013-06-19 | 湘潭电机股份有限公司 | Passive isolated direct current (DC) voltage detection device for urban railway vehicle |
| CN103383405A (en) * | 2013-07-10 | 2013-11-06 | 珠海许继芝电网自动化有限公司 | Passive signal voltage detection method |
| CN104076257A (en) * | 2014-06-26 | 2014-10-01 | 国网上海市电力公司 | Measurement protection device for power-frequency voltage-withstanding test of insulation tool |
| CN109936124A (en) * | 2017-12-15 | 2019-06-25 | 中兴通讯股份有限公司 | A kind of Security Unit |
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| Publication number | Publication date |
|---|---|
| CN101644727B (en) | 2012-11-07 |
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| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 361000 Fujian Province, Xiamen City Industrial Park 58 Siming District Applicant after: Xiamen Andaxing Electrical Group Co., Ltd. Address before: 361000 Fujian Province, Xiamen City Industrial Park 58 Siming District Applicant before: Xiamen Andaxing Electric Co., Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: XIAMEN ANDAXING ELECTRIC CO., LTD. TO: XIAMEN ANDAXING ELECTRIC GROUP CO., LTD. |
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Granted publication date: 20121107 Termination date: 20160807 |