CN2775931Y - Digital circuit working power working at high voltage level - Google Patents
Digital circuit working power working at high voltage level Download PDFInfo
- Publication number
- CN2775931Y CN2775931Y CN 200520095464 CN200520095464U CN2775931Y CN 2775931 Y CN2775931 Y CN 2775931Y CN 200520095464 CN200520095464 CN 200520095464 CN 200520095464 U CN200520095464 U CN 200520095464U CN 2775931 Y CN2775931 Y CN 2775931Y
- Authority
- CN
- China
- Prior art keywords
- voltage
- power
- digital circuit
- low
- power module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Inverter Devices (AREA)
Abstract
The utility model discloses an operating power source of a digital circuit working at high-voltage electric potential, which comprises a power module of alternating-current /direct-current transfer switch, and the utility model also comprises a high-voltage dividing capacitor and a low-voltage dividing capacitor which are connected in series. The AC input end of the power module of AC/DC transfer switch is connected to both ends of the low-voltage capacitor in parallel, and the DC stabilized voltage output end of the power module of the AC/DC transfer switch is connected with a filter circuit. In the utility model, the high-voltage dividing capacitor and the low-voltage dividing capacitor which are connected in series are directly connected between two phases of a three-phase high voltage power wire, thereby, the input power source is directly obtained via heavy-voltage signal voltage without the influence of variation in load, the operation is stable, and supplement power such as an accumulator, etc., are not needed. The power module of the AC/DC transfer switch, namely the AC/DC transfer switching power supply circuit, is adopted to solve power supply problem of the digital circuit, which realizes portability and high efficiency of the supply unit, and the supply unit provides a base for low-power consumption and portability of a high-voltage electric energy meter.
Description
Technical field
The utility model belongs to the digital circuit power supply, is specifically related to a kind of working power that is operated in the digital circuit of high voltage potential.
Background technology
Along with technical development, new requirement has appearred in power test, metering and control field, as the appearance of electronic type voltage, current transformer, the electric power metering device that install 6kV, 10kV, 35kV distribution transformer high-pressure side has solved between the electric power enterprise and the clearing of the electric energy between power supply enterprise and large user problem.The high-voltage power metering device has two kinds of implementations: first kind is to obtain signal by high voltage potential transformer and high-tension current inductor, delivers to then in the three-phase electric energy meter that is placed on low-pressure side and measures; Second kind is that high-voltage electric energy meter inside has comprised voltage, current sampling and finished the integrated apparatus of electric energy metrical function, and integral installation is in the high-pressure side.First kind of high-voltage power metering device adopts passive instrument transformer to take a sample in the high-pressure side, low-pressure side generally adopts the on-the-spot mains supply of 220V or 380V.And to second kind of high-voltage electric energy meter, itself belong to a kind of brand new technical, because integral body is placed in the high-pressure side, the needed power supply of high-voltage electric energy meter obtain the comparison difficulty, specifically the mode that can obtain by the energy of outside realizes power supply, as adopt solar cell for supplying power, send laser by optical fiber and become electric energy or the like mode, but have problems at aspects such as practicality, reliability and economy through opto-electronic conversion.The method of directly obtaining for working power in the high-pressure side, relatively the CT method of supplying power to is assisted in Chang Yong utilization, since the variation of supply line's load, electric power system stability existing problems, generally need to increase additional power supplys such as storage battery, the cost height, performance difficulty, and if adopt the linear stabilized power supply of common electric energy meter to realize, the power-efficient of this method only has an appointment 30%, it is big to exist power loss, and the parts that the input of power supply obtains electric current are too big, has the problem of heat radiation simultaneously.
Summary of the invention
It is a kind of directly from the alternate working power of obtaining the digital circuit that is operated in high voltage potential of electric energy of high-tension line that the purpose of this utility model is to provide.
The technical solution of the utility model is: the working power that is operated in the digital circuit of high voltage potential, it comprises the AC-DC conversion switch power module, it also comprises the high pressure dividing potential drop electric capacity and the low pressure dividing potential drop electric capacity of series connection, the ac input end of AC-DC conversion switch power module is connected in parallel on the low-voltage capacitance two ends, and the DC voltage-stabilizing output of AC-DC conversion switch power module connects filter circuit.
The high pressure dividing potential drop electric capacity and the low pressure dividing potential drop electric capacity of the utility model series connection directly are connected between the two-phase of three-phase high-voltage power line, thereby directly the voltage by high-voltage signal obtains importing power supply, can not be subjected to the influence of load variations, working stability, and additional power supplys such as storage battery need not be set; Employing AC-DC conversion switch power module is the powerup issue that the switching power circuit of AC/DC solves digital circuit, can realize the light, efficient of power supply unit, and these parts can provide the basis for product lighting, the low-power consumption of high-voltage electric energy meter.
Description of drawings
Fig. 1 schematic diagram of the present utility model
Fig. 2 circuit structure diagrammatic sketch of the present utility model
Embodiment
Present embodiment is based on the working power that A, B, C three-phase in the three-phase power circuit of 6 kilovolts or 10 kilovolts or 35 kilovolts all provide digital circuit.It also can be the working power that wherein a certain phase or two-phase provide digital circuit, this not tired stating.
As shown in Figure 1, A, B, C three-phase all provide the working power of digital circuit in the three-phase power circuit, be series connection two low-voltage capacitance C6, C7 between the A-B phase, connect high-voltage capacitance C5 between low-voltage capacitance C6, the C7, series connection low-voltage capacitance C9, high-voltage capacitance C8 in the middle of the B-C; AC-DC conversion switch power module in parallel respectively is AC/DC module 1, AC/DC module 2, AC/DC module 3 between low-voltage capacitance C6, C7, the C9 two ends.
As shown in Figure 2, concrete circuit: in 6 kilovolts or above A, B, the C three-phase power circuit A-B mutually between series connection low-voltage capacitance C6, high-voltage capacitance C5, low-voltage capacitance C7.Series connection low-voltage capacitance C9, high-voltage capacitance C8 between the B-C phase.
For the working power circuit of the digital circuit of A phase, the ac input end of AC/DC module U1 is connected in parallel on the two ends of low-voltage capacitance C6; At the interchange input two ends of AC/DC module U1 transient overvoltage protective device also in parallel.The transient overvoltage protective device comprises piezo-resistance ZR1 and Transient Voltage Suppressor D1 in parallel.Interchange input series limiting resistor R1, R2 at AC/DC module U1.AC/DC module U1 dc output end filter circuit; Filter circuit comprises filter capacitor C1, C2 and EMI1 filter.
Its principle is: the working power circuit of the digital circuit of A phase exchanges employing by low-voltage capacitance C6 after by dividing potential drop, after restraining device D1 (TVS) by piezo-resistance ZR1 and transient voltage, guarantees that the transient overvoltage of the input of AC/DC module is suppressed; And the transient overvoltage that absorbs the input of AC/DC module is suppressed, and after the AC/DC module is converted to direct current with interchange, exports after comprising filter capacitor C1, C2 and EMI1 filter by filter circuit.Wherein the AC/DC module adopts the minitype single-chip Switching Power Supply usually, and switching frequency is very high, and high frequency transformer adopts the miniaturization magnetic core, and the operating efficiency of module is generally more than 80%; The EMI1 filter is used for reducing the electromagnetic interference of exporting direct current.
Its structure of working power circuit for the digital circuit of B, C phase is the same, tired stating.Wherein ZR2, ZR3 are piezo-resistance; D2, D3 are that transient voltage is restrained device (TVS); R3, R4, R5, R6 are current-limiting resistance; C3, C4, C10, C11 are filter capacitor; U2, U3 are the AC/DC module; EMI2, EMI3 filter.
Claims (6)
1, a kind of working power that is operated in the digital circuit of high voltage potential, it comprises the AC-DC conversion switch power module, it is characterized in that it also comprises the high pressure dividing potential drop electric capacity and the low pressure dividing potential drop electric capacity of series connection, the ac input end of AC-DC conversion switch power module is connected in parallel on the low-voltage capacitance two ends, and the DC voltage-stabilizing output of AC-DC conversion switch power module connects filter circuit.
2, be operated in the working power of the digital circuit of high voltage potential according to claim 1, it is characterized in that transient overvoltage protective device in parallel between the ac input end two ends of AC-DC conversion switch power module.
3,, it is characterized in that described transient overvoltage protective device comprises piezo-resistance and Transient Voltage Suppressor in parallel as being operated in the working power of the digital circuit of high voltage potential as described in the claim 2.
4, be operated in the working power of the digital circuit of high voltage potential according to claim 1, it is characterized in that the ac input end series limiting resistor of AC-DC conversion switch power module.
5, be operated in the working power of the digital circuit of high voltage potential according to claim 1, it is characterized in that filter circuit comprises filter capacitor and/or electromagnetic interface filter.
6, be operated in the working power of the digital circuit of high voltage potential according to claim 1, it is characterized in that the high pressure dividing potential drop electric capacity of connecting and low pressure dividing potential drop electric capacity are connected between the two-phase of three-phase power circuit of 6 kilovolts or 10 kilovolts or 35 kilovolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520095464 CN2775931Y (en) | 2005-03-10 | 2005-03-10 | Digital circuit working power working at high voltage level |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520095464 CN2775931Y (en) | 2005-03-10 | 2005-03-10 | Digital circuit working power working at high voltage level |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2775931Y true CN2775931Y (en) | 2006-04-26 |
Family
ID=36750246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520095464 Expired - Lifetime CN2775931Y (en) | 2005-03-10 | 2005-03-10 | Digital circuit working power working at high voltage level |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2775931Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101216510B (en) * | 2008-01-02 | 2012-05-09 | 武汉国测恒通智能仪器有限公司 | High voltage electric energy direct metered system and method |
| CN103036455A (en) * | 2012-12-13 | 2013-04-10 | 威胜集团有限公司 | Three-phase online power-obtaining device for distribution networks |
| CN104300799A (en) * | 2014-10-10 | 2015-01-21 | 华立仪表集团股份有限公司 | Device and method for obtaining power supply from high-voltage power transmission line |
| CN107102201A (en) * | 2017-04-01 | 2017-08-29 | 国网山东省电力公司枣庄供电公司 | A kind of integrated high-pressure electric power meter |
| CN107102202A (en) * | 2017-06-06 | 2017-08-29 | 宁波恒力达科技有限公司 | A kind of direct gauge assembly of single-phase high voltage high current |
| CN114076846A (en) * | 2021-11-11 | 2022-02-22 | 山东德源电力科技股份有限公司 | Ring main unit is with digital voltage sensor |
-
2005
- 2005-03-10 CN CN 200520095464 patent/CN2775931Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101216510B (en) * | 2008-01-02 | 2012-05-09 | 武汉国测恒通智能仪器有限公司 | High voltage electric energy direct metered system and method |
| CN103036455A (en) * | 2012-12-13 | 2013-04-10 | 威胜集团有限公司 | Three-phase online power-obtaining device for distribution networks |
| CN104300799A (en) * | 2014-10-10 | 2015-01-21 | 华立仪表集团股份有限公司 | Device and method for obtaining power supply from high-voltage power transmission line |
| CN107102201A (en) * | 2017-04-01 | 2017-08-29 | 国网山东省电力公司枣庄供电公司 | A kind of integrated high-pressure electric power meter |
| CN107102202A (en) * | 2017-06-06 | 2017-08-29 | 宁波恒力达科技有限公司 | A kind of direct gauge assembly of single-phase high voltage high current |
| CN114076846A (en) * | 2021-11-11 | 2022-02-22 | 山东德源电力科技股份有限公司 | Ring main unit is with digital voltage sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102593869B (en) | H full-bridge conversion type micro-inverter grid connecting device | |
| CN101697430B (en) | Power control method based CT electricity getting device of high voltage transmission line | |
| CN202634316U (en) | Energy taking device based on capacitive voltage divider | |
| CN2775931Y (en) | Digital circuit working power working at high voltage level | |
| CN203688682U (en) | Energy saving electronic load for aging inverter | |
| CN204517680U (en) | A kind of interchange inputs doubleway output DC-stabilized circuit | |
| CN101577487A (en) | Capacitor-decoupling three-phase active power factor corrector | |
| CN105870974A (en) | Bidirectional measurement device of electric quantity parameters of distributed photovoltaic grid-connected system | |
| Lin et al. | The study of the power quality emission characteristics of different types of lamps and their impacts on distribution systems | |
| CN2466848Y (en) | Rectifying module for switching supply unit | |
| CN208445485U (en) | A kind of super high power sine wave ultrasonic power | |
| CN201674404U (en) | Power supply device converting single phase to three phases | |
| CN201750187U (en) | Solar energy charging device | |
| CN201418036Y (en) | New-type high-efficiency specially-required power supply circuit | |
| CN205960662U (en) | Two -way measuring device of distributing type grid -connected PV electric quantity parameter of system | |
| CN102890217A (en) | Universal experimental device based on Z-source inverter | |
| CN202693675U (en) | Power circuit for intelligent electric meter and three-phase intelligent electric meter with power circuit | |
| CN2136475Y (en) | High- and low-voltage power metering box | |
| CN208316590U (en) | A kind of novel LWD host PFC correction regulated power supply system | |
| CN2831575Y (en) | Low voltage electrical network dynamic purifier | |
| CN202435261U (en) | Passive power factor correction circuit | |
| CN207801480U (en) | 10kV distribution dynamic voltage regulation devices | |
| CN202384762U (en) | 35kV shunt hybrid electrical network harmonic wave active filtering integrated device | |
| CN202535294U (en) | High-frequency inverter pulse power supply used in electrodeless lamps | |
| CN201994844U (en) | Power supply with passive power factor correction network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHUHAI GUOCE ELECTRONIC WATTHOUR METER SCIENCE + T Free format text: FORMER OWNER: WUHAN GUOCE SCI-TECH CO., LTD. Effective date: 20100909 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 430074 NO.7-4, GUANDONG SCIENCE PARK, GUANSHAN ROAD 3, HONGSHAN DISTRICT, WUHAN CITY, HUBEI PROVINCE TO: 519070 BUILDING 14, CUIZHU INDUSTRIAL AREA, QIANSHAN, ZHUHAI CITY, GUANGDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20100909 Address after: 519070 Guangdong city in Zhuhai Province before the mountain bamboo industrial zone 14 Patentee after: ZHUHAI GUOCE ELECTRIC ENERGY INSTRUMENT TECHNOLOGY CO., LTD. Address before: 430074 Hubei Province, Wuhan city Hongshan District Road three East Guanshan Technology Park 7-4 No. Patentee before: Wuhan Guoce Science & Technology Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150310 Granted publication date: 20060426 |