CN203278401U - Signal collector of distribution transformer remote monitoring system based on wireless communication - Google Patents
Signal collector of distribution transformer remote monitoring system based on wireless communication Download PDFInfo
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- CN203278401U CN203278401U CN2013203432421U CN201320343242U CN203278401U CN 203278401 U CN203278401 U CN 203278401U CN 2013203432421 U CN2013203432421 U CN 2013203432421U CN 201320343242 U CN201320343242 U CN 201320343242U CN 203278401 U CN203278401 U CN 203278401U
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- operational amplifier
- resistance
- output
- distribution transformer
- resistor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
The utility model discloses a signal collector of a distribution transformer remote monitoring system based on wireless communication. The signal collector comprises a first resistor, a second resistor, a first capacitor, a second capacitor, a current transformer, a first operational amplifier and an acquisition signal output line. Two output terminals of the current transformer are respectively connected with a non inverting input terminal and an anti-phase input terminal of the first operational amplifier; the first capacitor and the second resistor are in parallel connection to form a parallel branch; two terminals of the parallel branch are respectively connected with the anti-phase input terminal and an output terminal of the first operational amplifier; one terminal of the first resistor is connected with the acquisition signal output line and another terminal of the first resistor is connected with the output terminal of the first operational amplifier; and one terminal of the second capacitor is connected with a line between the output terminal of the first operational amplifier and the first resistor and the other terminal of the second capacitor is grounded. The signal collector of the distribution transformer remote monitoring system based on the wireless communication uses a small number of elements and is low in cost; and the signal collector based on the distribution transformer remote monitoring system of the wireless communication, when in use, can adjust the second resistor so as to adjust the collected heavy current to the needed small voltage; and the operation is convenient.
Description
Technical field
The utility model relates to the auxiliary system of distribution transformer, specifically based on the signal picker of the distribution transformer long distance control system of radio communication.
Background technology
Along with industrial expansion, all trades and professions improve day by day to the power supply reliability of electric power system and the requirement of stability, distribution transformer is as the core link of electric power system, and it is electric energy directly to be distributed to the power equipment of low-voltage customer, and its service data is the basic data of whole power distribution network.Therefore, the safe operation of distribution transformer is most important to electric power system.For distribution transformer is monitored, existing distribution power transformation device generally is equipped with the supervisory control system based on radio communication, and supervisory control system is usually come analyzing and processing by the current signal that gathers distribution transformer, and then realizes the remote monitoring to distribution power transformation device.Wherein, the signal of the distribution power transformation device that collects is large current signal, and in supervisory control system, the controller of monitor terminal generally can only be processed the small voltage signal, and the large current signal that therefore needs transducer is collected changes into the small voltage signal.Circuit structure designed when the supervisory control system of existing distribution transformer changes into small voltage with large electric current is complicated, uses element more, and cost is high, and it is loaded down with trivial details that large current signal is adjusted to the small voltage process of supervisory control system middle controller demand.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of signal picker of the distribution transformer long distance control system based on radio communication is provided, and it uses element few, and cost is low, is convenient to debugging, and then easy to utilize.
the purpose of this utility model is achieved through the following technical solutions: based on the signal picker of the distribution transformer long distance control system of radio communication, comprise the first resistance, the second resistance, the first electric capacity, the second electric capacity, current transformer, the first operational amplifier and collection signal outlet line, two outputs of described current transformer are connected with inverting input with the in-phase input end of the first operational amplifier respectively, described the first electric capacity is connected with output with the inverting input of the first operational amplifier respectively with the parallel branch two ends of being connected that the resistance parallel connection consists of afterwards, described the first resistance one end is connected with the collection signal outlet line, and its other end is connected with the first operational amplifier output terminal, described the second electric capacity one end is connected on circuit between the first operational amplifier output terminal and the first resistance, its other end ground connection.When the utility model was used, current transformer carried out the current signal collection, the signal output after the collection signal outlet line is used for changing.
Described the first operational amplifier is connected with power supply.
Signal picker based on the distribution transformer long distance control system of radio communication, also comprise the transient voltage twin zener dioder, described transient voltage twin zener dioder one end is connected on circuit between current transformer output and the first operational amplifier in-phase input end, and its other end is connected on circuit between current transformer output and the first operational amplifier inverting input.Wherein, the transient voltage twin zener dioder can suppress the glitch of voltage or electric current, prevent the unexpected rising of voltage and current, when the transient voltage twin zener dioder stands high energy impact events, it can make with high speed its impedance suddenly reduce, absorb simultaneously a large electric current, with the voltage clamp between its two ends on a predetermined numerical value, thereby the circuit element of guaranteeing the back is subjected to the high-octane impact of transient state and damages.
For the ease of the resistance of the second resistance is regulated, as preferably, described the second resistance is adjustable resistance.
Compared with prior art, the utlity model has following beneficial effect: (1) the utility model comprises the first resistance, the second resistance, the first electric capacity, the second electric capacity, current transformer and the first operational amplifier, the utility model uses element few, cost is low, is convenient to realize, when the utility model is used, can obtain needed Voltage-output by the resistance of regulating the second resistance, debugging is convenient, so, is convenient to of the present utility model applying.
(2) the utility model comprises the first electric capacity and the second electric capacity, and when the utility model was used, the first electric capacity and the second electric capacity were used for uncoupling and filtering, and then can improve the stability of collection signal outlet line output signal.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
In accompanying drawing, the corresponding name of Reference numeral is called: 1, current transformer, 2, the collection signal outlet line, R1, the first resistance, R2, the second resistance, C1, the first electric capacity, C2, the second electric capacity, D1, transient voltage twin zener dioder, A1, the first operational amplifier, VCC, power supply.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but execution mode of the present utility model is not limited to this.
Embodiment
As shown in Figure 1, signal picker based on the distribution transformer long distance control system of radio communication, comprise the first resistance R 1, the second resistance R 2, the first capacitor C 1, the second capacitor C 2, current transformer 1, the first operational amplifier A 1 and transient voltage twin zener dioder D1, wherein, an output of current transformer 1 secondary is connected with the in-phase input end of the first operational amplifier A 1, and another output of current transformer 1 secondary is connected with the inverting input of the first operational amplifier A 1.The first operational amplifier A 1 is connected with power supply VCC, and the first operational amplifier A 1 also is provided with earth terminal.The first capacitor C 1 is connected with output with the inverting input of the first operational amplifier A 1 respectively with the parallel branch two ends of being connected that resistance R 2 consists of after in parallel, the first resistance R 1 one ends are connected with the first operational amplifier A 1 output, and its other end is connected with collection signal outlet line 2.The second capacitor C 2 one ends are connected on circuit between the first operational amplifier A 1 output and the first resistance R 1, its other end ground connection.
Transient voltage twin zener dioder D1 one end is connected on circuit between current transformer 1 output and the first operational amplifier A 1 in-phase input end, and its other end is connected on circuit between current transformer 1 output and the first operational amplifier A 1 inverting input.When being used, the present embodiment regulates control, the second preferred adjustable resistance that adopts of resistance R 2 in the present embodiment.
When the present embodiment was used, the former limit of current transformer 1 was connected with distribution transformer and is used for gathering current signal, can obtain needed Voltage-output by the resistance of regulating the second resistance R 2, and the signal after conversion is through 2 outputs of collection signal outlet line.
Above content is the further description of the utility model being done in conjunction with concrete preferred implementation, can not assert that embodiment of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, not breaking away from other execution modes that draw under the technical solution of the utility model, all should be included in protection range of the present utility model.
Claims (4)
1. based on the signal picker of the distribution transformer long distance control system of radio communication, it is characterized in that: comprise the first resistance (R1), the second resistance (R2), the first electric capacity (C1), the second electric capacity (C2), current transformer (1), the first operational amplifier (A1) and collection signal outlet line (2), two outputs of described current transformer (1) are connected with inverting input with the in-phase input end of the first operational amplifier (A1) respectively, described the first electric capacity (C1) is connected with output with the inverting input of the first operational amplifier (A1) respectively with the parallel branch two ends of being connected that resistance (R2) consists of after in parallel, described the first resistance (R1) end is connected with collection signal outlet line (2), and its other end is connected with the first operational amplifier (A1) output, described the second electric capacity (C2) end is connected on circuit between the first operational amplifier (A1) output and the first resistance (R1), its other end ground connection.
2. the signal picker of the distribution transformer long distance control system based on radio communication according to claim 1, it is characterized in that: described the first operational amplifier (A1) is connected with power supply (VCC).
3. the signal picker of the distribution transformer long distance control system based on radio communication according to claim 1, it is characterized in that: also comprise transient voltage twin zener dioder (D1), described transient voltage twin zener dioder (D1) end is connected on circuit between current transformer (1) output and the first operational amplifier (A1) in-phase input end, and its other end is connected on circuit between current transformer (1) output and the first operational amplifier (A1) inverting input.
4. the signal picker of the described distribution transformer long distance control system based on radio communication of any one according to claim 1～3, it is characterized in that: described the second resistance (R2) is adjustable resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203432421U CN203278401U (en) | 2013-06-17 | 2013-06-17 | Signal collector of distribution transformer remote monitoring system based on wireless communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203432421U CN203278401U (en) | 2013-06-17 | 2013-06-17 | Signal collector of distribution transformer remote monitoring system based on wireless communication |
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| Publication Number | Publication Date |
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| CN203278401U true CN203278401U (en) | 2013-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013203432421U Expired - Fee Related CN203278401U (en) | 2013-06-17 | 2013-06-17 | Signal collector of distribution transformer remote monitoring system based on wireless communication |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278672A (en) * | 2013-06-17 | 2013-09-04 | 成都荣耀科技有限公司 | Signal acquisition circuit used in distribution transformer remote monitoring system |
-
2013
- 2013-06-17 CN CN2013203432421U patent/CN203278401U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278672A (en) * | 2013-06-17 | 2013-09-04 | 成都荣耀科技有限公司 | Signal acquisition circuit used in distribution transformer remote monitoring system |
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| Date | Code | Title | Description |
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| 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: 20131106 Termination date: 20140617 |
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| EXPY | Termination of patent right or utility model |