CN203278402U - Signal conditioner of distribution transformer remote monitoring system based on wireless communication - Google Patents
Signal conditioner of distribution transformer remote monitoring system based on wireless communication Download PDFInfo
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- CN203278402U CN203278402U CN2013203432493U CN201320343249U CN203278402U CN 203278402 U CN203278402 U CN 203278402U CN 2013203432493 U CN2013203432493 U CN 2013203432493U CN 201320343249 U CN201320343249 U CN 201320343249U CN 203278402 U CN203278402 U CN 203278402U
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- signal
- resistance
- distribution transformer
- amplifying circuit
- system based
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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
Abstract
The utility model discloses a signal conditioner of a distribution transformer remote monitoring system based on wireless communication. The signal conditioner includes an acquisition signal input line (1), a first resistor (R1), a second resistor (R2), a first capacitor (C1), a following amplifying circuit and a conditioning signal output line (2). Two ends of the second resistor (R2) are respectively connected with the acquisition signal input line (1) and an input terminal of the following amplifying circuit. The conditioning signal output line (2) is connected with the following amplifying circuit. One terminal of the first resistor (R1) is connected with the acquisition signal input line (1), and the other terminal of the first resistor (R1) is grounded; and one terminal of the first capacitor (C1) is connected with a line between the second resistor (R2) and the input terminal of the following amplifying circuit, and the other terminal of the first capacitor (C1) is grounded. The signal conditioner of the distribution transformer remote monitoring system based on the wireless communication, when in use, can filter the high frequency signal in the acquisition signal, can prevent the signal spectrum aliasing and the high frequency interference, and thus can prevent the high frequency signal from influencing the controller in the monitoring system to make a right judgment.
Description
Technical field
The utility model relates to the auxiliary system of distribution transformer, specifically based on the signal conditioner 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.Usually be accompanied by high-frequency signal in the signal that supervisory control system collects, be prone to spectral aliasing and High-frequency Interference, and then the controller that can affect distribution power transformation device supervisory control system is made correct control.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, provide a kind of can filtering collection signal medium-high frequency signal, and then can avoid occurring the signal conditioner based on the distribution transformer long distance control system of radio communication of spectral aliasing and High-frequency Interference.
The purpose of this utility model is achieved through the following technical solutions: based on the signal conditioner of the distribution transformer long distance control system of radio communication, comprise collection signal input line, the first resistance, the second resistance, the first electric capacity, follow amplifying circuit and conditioned signal output line, described the second resistance two ends respectively with the collection signal input line be connected input amplifier and be connected, described conditioned signal output line is connected with the output of following amplifying circuit, described the first resistance one end is connected on the collection signal input line, its other end ground connection; Described the first electric capacity one end is connected to the second resistance and follows on circuit between input amplifier its other end ground connection.When the utility model is used, the current signal that collects is exported from the conditioned signal output line after the utility model is processed, wherein through the input of collection signal input line, follow amplifying circuit and have the high impedance matching properties, can reduce signal and carry out the loss of postorder when processing.
Signal conditioner based on the distribution transformer long distance control system of radio communication also comprises the transient voltage twin zener dioder, and described transient voltage twin zener dioder one end is connected on the collection signal input line, its other end ground connection.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.
As preferably, the described amplifying circuit of following is made of the first operational amplifier, and described the second resistance is connected with the in-phase input end of the first operational amplifier, and the inverting input of described the first operational amplifier is connected with its output.
The first operational amplifier of the present utility model both can adopt common source with other element in supervisory control system, also can adopt independent current source, controls power supply for the ease of independent, and as preferably, described the first operational amplifier is connected with power supply.
compared with prior art, the utlity model has following beneficial effect: the utility model comprises the first resistance, the second resistance, the first electric capacity and follow amplifying circuit, the utility model uses element few, be convenient to realize, cost is low, when the utility model is used, collection signal is inputted the low-pass filter circuit of the second resistance and the first electric capacity formation after the first electric resistance partial pressure, under the effect of filter circuit, energy filtering high-frequency signal, so, can avoid occurring spectral aliasing and High-frequency Interference, and then the controller that can avoid high-frequency signal to affect distribution power transformation device supervisory control system is made correct control.
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, collection signal input line, 2, the conditioned signal output line, R1, the first resistance, R2, the second resistance, C1, the first 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 conditioner based on the distribution transformer long distance control system of radio communication, comprise collection signal input line 1, the first resistance R 1, the second resistance R 2, the first capacitor C 1, follow amplifying circuit and conditioned signal output line 2, wherein, following amplifying circuit preferably adopts the first operational amplifier A 1 to realize, the inverting input of the first operational amplifier A 1 is connected with its output, and the first operational amplifier A 1 is connected with power supply VCC and is provided with ground path.The second resistance R 2 two ends respectively with collection signal input line 1 be connected operational amplifier A 1 in-phase input end and be connected, conditioned signal output line 2 is connected with the first operational amplifier A 1 output.The first resistance R 1 one ends are connected on collection signal input line 1, its other end ground connection; The first capacitor C 1 one ends are connected on circuit between the second resistance R 2 and the first operational amplifier A 1 in-phase input end, its other end ground connection.
The present embodiment also comprises transient voltage twin zener dioder D1, and wherein, transient voltage twin zener dioder D1 one end is connected on collection signal input line 1, its other end ground connection.In the present embodiment the first resistance R 1 be connected to node select on collection signal input line 1 at transient voltage twin zener dioder D1 between the node on collection signal input line 1 and the second resistance R 2.
When the present embodiment is used, the current signal that gathers is from 1 input of collection signal input line, and through the first resistance R 1 dividing potential drop, convert voltage signal in the signal input point, after the low-pass filter circuit filtering high-frequency signal of the second resistance R 2 and the first capacitor C 1 formation, then after processing, the first operational amplifier A 1 exports from conditioned signal output line 2.
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 conditioner of the distribution transformer long distance control system of radio communication, it is characterized in that: comprise collection signal input line (1), the first resistance (R1), the second resistance (R2), the first electric capacity (C1), follow amplifying circuit and conditioned signal output line (2), described the second resistance (R2) two ends respectively with collection signal input line (1) be connected input amplifier and be connected, described conditioned signal output line (2) is connected with the output of following amplifying circuit, described the first resistance (R1) end is connected on collection signal input line (1), its other end ground connection, described the first electric capacity (C1) end is connected to the second resistance (R2) and follows on circuit between input amplifier its other end ground connection.
2. the signal conditioner 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 collection signal input line (1), its other end ground connection.
3. the signal conditioner of the distribution transformer long distance control system based on radio communication according to claim 1 and 2, it is characterized in that: the described amplifying circuit of following is made of the first operational amplifier (A1), described the second resistance (R2) is connected with the in-phase input end of the first operational amplifier (A1), and the inverting input of described the first operational amplifier (A1) is connected with its output.
4. the signal conditioner of the distribution transformer long distance control system based on radio communication according to claim 3, it is characterized in that: described the first operational amplifier (A1) is connected with power supply (VCC).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203432493U CN203278402U (en) | 2013-06-17 | 2013-06-17 | Signal conditioner of distribution transformer remote monitoring system based on wireless communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203432493U CN203278402U (en) | 2013-06-17 | 2013-06-17 | Signal conditioner of distribution transformer remote monitoring system based on wireless communication |
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| Publication Number | Publication Date |
|---|---|
| CN203278402U true CN203278402U (en) | 2013-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203432493U Expired - Fee Related CN203278402U (en) | 2013-06-17 | 2013-06-17 | Signal conditioner of distribution transformer remote monitoring system based on wireless communication |
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| CN (1) | CN203278402U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103368524A (en) * | 2013-06-17 | 2013-10-23 | 成都荣耀科技有限公司 | Signal conditioning circuit for remote monitoring system of distribution transformer |
-
2013
- 2013-06-17 CN CN2013203432493U patent/CN203278402U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103368524A (en) * | 2013-06-17 | 2013-10-23 | 成都荣耀科技有限公司 | Signal conditioning circuit for remote monitoring system of distribution transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |