CN204651938U - A kind of three-phase load unbalance automatic regulating system - Google Patents
A kind of three-phase load unbalance automatic regulating system Download PDFInfo
- Publication number
- CN204651938U CN204651938U CN201520423014.4U CN201520423014U CN204651938U CN 204651938 U CN204651938 U CN 204651938U CN 201520423014 U CN201520423014 U CN 201520423014U CN 204651938 U CN204651938 U CN 204651938U
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- mutual inductor
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 13
- 238000004891 communication Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
Classifications
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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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
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- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The utility model proposes a kind of three-phase load unbalance automatic regulating system, comprise zero sequence current mutual inductor, its primary side is connected with three-phase firewire and zero line, and the three-phase firewire of its secondary side is respectively equipped with switch; Described three switches are all connected with driver element; Driver element is also connected with feedback unit, and feedback unit and driver element are all connected with single-chip microcomputer; Zero sequence current mutual inductor is also connected with single-chip microcomputer through amplifying unit; Single-chip microcomputer is also connected with current signal collecting unit, power supply and communication unit respectively; Current signal collecting unit is also connected with three-phase firewire respectively, and communication unit also carries out radio communication with monitor terminal and is connected.Said system can by the phase line of the single-phase user of adjustment, a specific electric load is made to reach balance, and then guarantee the load balancing of main line, reduce three-phase load unbalance rate, effectively balance low-voltage circuit electric current, solve the problem that the large pressure drop of inclined load phase current is high, thus improve terminal voltage, reduce line loss.
Description
Technical field
The utility model relates to power domain, particularly relates to a kind of three-phase load unbalance automatic regulating system.
Background technology
Along with the raising of people's living standard, the rising of the power consumption of single-phase user, the phenomenon of current ubiquity platform district three-phase load unbalance, the particularly distribution transformer three-phase load unbalance that causes of seasonal, period user power utilization time disunity, voltage offset values increases, and voltage waveform produces distortion, line loss increases, cause former living area electric power system can't bear the heavy load, cause large-area power-cuts time serious, the neutral line blows.The problem that some distribution network line terminal voltage is relatively low is at present quite outstanding, and power distribution network low-voltage problem of comprehensive treatment is an important process of various places power department for this reason.
Utility model content
In order to overcome the deficiencies in the prior art, the utility model proposes a kind of three-phase load unbalance automatic regulating system, to reduce three-phase load unbalance rate, active balance low-voltage circuit electric current, solve the problem that the large pressure drop of inclined load phase current is high, and then improve terminal voltage, reduce line loss.
To achieve these goals, the utility model proposes a kind of three-phase load unbalance automatic regulating system, comprise zero sequence current mutual inductor, three-phase firewire and the zero line of its primary side and three phase mains are connected, and the three-phase firewire of described zero sequence current mutual inductor secondary side is respectively equipped with switch; Described three switches are all connected with driver element; Described driver element is also connected with feedback unit, and described feedback unit and driver element are all connected with single-chip microcomputer; Described zero sequence current mutual inductor is also connected with described single-chip microcomputer through amplifying unit; Described single-chip microcomputer is also connected with current signal collecting unit, power supply and communication unit respectively; Described current signal collecting unit is also connected with three-phase firewire respectively, and described communication unit also carries out radio communication with monitor terminal and is connected.
The beneficial effect of the program of the present utility model is that above-mentioned three-phase load unbalance automatic regulating system can by the phase line of the single-phase user of adjustment, a specific electric load is made to reach balance, and then guarantee the load balancing of main line, reduce three-phase load unbalance rate, effectively balance low-voltage circuit electric current, solve the problem that the large pressure drop of inclined load phase current is high, thus improve terminal voltage, reduce line loss.
Accompanying drawing explanation
Fig. 1 shows the principle schematic of the three-phase load unbalance automatic regulating system involved by the utility model.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is further described.
As shown in Figure 1, three-phase load unbalance automatic regulating system involved by the utility model comprises zero sequence current mutual inductor 1, the primary side of described zero sequence current mutual inductor 1 is connected with the three-phase firewire L1 ~ L3 of three phase mains and zero line N, three-phase firewire L1 ~ the L3 of described zero sequence current mutual inductor 1 secondary side is respectively equipped with the first K switch 1, second switch K2, the 3rd K switch 3, the break-make of three-phase firewire by above-mentioned three switch control rule; Described three K switch 1 ~ K3 are all connected with driver element 4, control described three K switch 1 ~ K3 carry out on-off action by described driver element 4; Described driver element 4 is also connected with feedback unit 3, and described feedback unit 3 and driver element 4 are all connected with single-chip microcomputer 5; Described zero sequence current mutual inductor 1 is also connected with described single-chip microcomputer 5 through amplifying unit 2; Described single-chip microcomputer 5 is also connected with current signal collecting unit 6, power supply 7 and communication unit 8 respectively; Described current signal collecting unit 6 is also connected with three-phase firewire L1 ~ L3 respectively, and described communication unit 8 also carries out radio communication with monitor terminal 9 and is connected, and wherein said communication unit 8 can adopt micropower wireless communication module.
In concrete application process, described current signal collecting unit 6 gathers the current information on three-phase firewire L1 ~ L3, and above-mentioned information is sent in described single-chip microcomputer 5, described single-chip microcomputer 5 provides power supply by power supply 7, when overload on a certain phase firewire, described single-chip microcomputer 5 can trigger described driver element 4, switch on this phase firewire can disconnect by described driver element 4, meanwhile, above-mentioned drive singal can be sent to described feedback unit 3 by described driver element 4, described feedback unit 3 and then above-mentioned drive singal is sent in described single-chip microcomputer 5, after making described single-chip microcomputer 5 confirm that the phase line of this overload is cut off, described single-chip microcomputer 5 just can export control signal and make described driver element 4 driving switch close the phase line of conducting needs connection, to guarantee that the same time can only be communicated with a phase firewire, for single-phase customer power supply.
Three-phase load unbalance automatic regulating system involved by the utility model can realize earth leakage protective; concrete principle is that described zero sequence current mutual inductor 1 is for detecting electric leakage signal; and above-mentioned electric leakage signal is amplified through described amplifying unit 2; and then transferring to described single-chip microcomputer 5, described single-chip microcomputer 5 can trigger described driver element 4 and the phase line of above-mentioned electric leakage be disconnected.
Three-phase load unbalance automatic regulating system involved by the utility model can also realize automatic commutation by Long-distance Control, described monitor terminal 9 sends commutation instruction, this instruction transfers to described communication unit 8 by communication, and then transferring to described single-chip microcomputer 5, described single-chip microcomputer 5 can control described driver element 4 according to above-mentioned instruction and carry out commutation action.
Three-phase load unbalance automatic regulating system involved by the utility model is applicable to the platform district that three-phase and four-line has covered, by adjusting the phase line of single-phase user, a specific electric load is made to reach balance, and then guarantee the load balancing of main line, reduce three-phase load unbalance rate, effectively balance low-voltage circuit electric current, solve the problem that the large pressure drop of inclined load phase current is high, thus raising terminal voltage, reduce line loss.
Claims (1)
1. a three-phase load unbalance automatic regulating system, is characterized in that: comprise zero sequence current mutual inductor, and three-phase firewire and the zero line of its primary side and three phase mains are connected, and the three-phase firewire of described zero sequence current mutual inductor secondary side is respectively equipped with switch; Described three switches are all connected with driver element; Described driver element is also connected with feedback unit, and described feedback unit and driver element are all connected with single-chip microcomputer; Described zero sequence current mutual inductor is also connected with described single-chip microcomputer through amplifying unit; Described single-chip microcomputer is also connected with current signal collecting unit, power supply and communication unit respectively; Described current signal collecting unit is also connected with three-phase firewire respectively, and described communication unit also carries out radio communication with monitor terminal and is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520423014.4U CN204651938U (en) | 2015-06-18 | 2015-06-18 | A kind of three-phase load unbalance automatic regulating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520423014.4U CN204651938U (en) | 2015-06-18 | 2015-06-18 | A kind of three-phase load unbalance automatic regulating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204651938U true CN204651938U (en) | 2015-09-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520423014.4U Expired - Fee Related CN204651938U (en) | 2015-06-18 | 2015-06-18 | A kind of three-phase load unbalance automatic regulating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204651938U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106018913A (en) * | 2016-06-27 | 2016-10-12 | 国网江苏省电力公司盐城供电公司 | Multifunctional high voltage transformer |
| CN108023359A (en) * | 2016-11-03 | 2018-05-11 | 南京宏景智能电网科技有限公司 | A kind of power distribution automation three-phase imbalance automatic regulating system |
-
2015
- 2015-06-18 CN CN201520423014.4U patent/CN204651938U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106018913A (en) * | 2016-06-27 | 2016-10-12 | 国网江苏省电力公司盐城供电公司 | Multifunctional high voltage transformer |
| CN108023359A (en) * | 2016-11-03 | 2018-05-11 | 南京宏景智能电网科技有限公司 | A kind of power distribution automation three-phase imbalance automatic regulating system |
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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: 20150916 Termination date: 20170618 |
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| CF01 | Termination of patent right due to non-payment of annual fee |