CN104659796B - Automatic phase modulator for low-voltage three-phase load unbalance - Google Patents
Automatic phase modulator for low-voltage three-phase load unbalance Download PDFInfo
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- CN104659796B CN104659796B CN201310581053.2A CN201310581053A CN104659796B CN 104659796 B CN104659796 B CN 104659796B CN 201310581053 A CN201310581053 A CN 201310581053A CN 104659796 B CN104659796 B CN 104659796B
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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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Abstract
An automatic phase modulator for low-voltage three-phase load unbalance of the invention comprises a control circuit and a phase switching mechanism. The control circuit comprises a three-phase rectifier bridge composed of D1, D2 and D3, a voltage dividing circuit composed of R1, R2, R3, R4, R5 and R6, a voltage comparator composed of IC1, IC2 and IC3, a set comparison voltage circuit composed of D5 M2 and R8, and a delay trigger circuit composed of IC3, M1 and R8. A phase switcher K is responsible for the selection of three-phase voltage. The automatic phase modulator for low-voltage three-phase load unbalance of the invention has the beneficial effect that the automatic phase modulator is simple in structure, low in cost and reliable in performance, and can achieve the technical means of automatic three-phase voltage adjustment, improve the quality of power supply of low-voltage transmission lines and ensure normal electricity use of users.
Description
(1) technical field
The invention belongs to electric power system low-voltage electricity transmission line power supply unit, more particularly to a kind of low-voltage three-phase load imbalance
Phase order device.
(2) background technology
Electric power system Di electricity supply line of China is three-phase four-wire power supply mode, supply load easily occurs uneven
The phenomenon of single-phase weighting, reduces power supply quality, and the phase line line voltage distribution of weighting is too low also easily to be blown, and affects normal electricity consumption,
Simultaneously unnecessary electric energy loss is also increased, have impact on the benefit of electric power system.In recent years national grid was supplied part low pressure
Electric wire road network has carried out technological transformation, solves line footpath, the problems such as distribution capacity is little, but as exhausting level is improved,
The household electrical appliance of heavy load surge, three-phase load unbalance phenomenon or generally existing, manually adjust three-phrase burden balance, due to
The Household Appliance not factor such as persistence, effect is undesirable, it is impossible to reach the highest service efficiency of transmission line of electricity.
(3) content of the invention
The present invention is in order to make up the deficiencies in the prior art, there is provided it is a kind of can autobalance line load phase order device.
The present invention is achieved through the following technical solutions：
The three-phase load unbalance phase order device of the present invention, it is characterized in that：Including control circuit, Phase-switching
Structure, control circuit includes that circuit front-end has respectively to three-phase input voltage rectification, blood pressure lowering, the voltage collection circuit for filtering.Adopt
The three-phase voltage of collection respectively enters voltage comparator and is compared with the voltage for setting, and delay trigger circuit sends instruction, phase
Position switching mechanism work, output power supply circuits is switched in the higher phase line of voltage, it is ensured that higher power supply quality.
The invention has the beneficial effects as follows, convenient to install and maintain, simple structure, control circuit and Phase-switching mechanism design department
Reasonable, it is high to make cheap, reliability.Effectively output phase voltage can be automatically switched to the higher circuit network of voltage
In phase place, the mesh ground of autobalance three-phase voltage and load is reached.
(4) illustrate
Fig. 1 is the circuit control principle figure of the present invention.The A that Fig. 2 is Phase-switching mechanism structure figure, Fig. 3 is Fig. 2 is to side-looking
Structure chart, in figure, D1, D2, D3 rectifier bridge, R1, R2, R3, R4, R5, R6 divider resistance, C1, C2, C3, C4, C5, C6 filtered electrical
Hold, IC1, IC2, IC3 voltage comparator circuit, JC3 delay trigger circuits, J relays, D5 sampling setting voltage rectifier bridges, M2 sets
Determine voltage regulator resistor, K phase switchers, 1,2,3, voltage inlet wire binding post, 4 guide rods, 11 pawl restoring springs, 12 spine
Pawl, 13 positive stop blocks, 14 electric magnet, 15,16,7,10,22,24 static contacts, 18 electric magnet fixed mounts, 9, back-moving spring, 5, solid
Fixed column, 6, jump ring, 8,17, rivet, 9,25 moving contacts, 20 ratchets；21 drives；26 voltage outlet binding posts；23 housings；33
First conductive connecting plate；27th, 30 conductive reed；F output leads；32nd, line ball screw-socket；28th, the second conductive connecting plate
(5) specific embodiment
Accompanying drawing is a kind of specific embodiment of the present invention.
The low-voltage three-phase load imbalance phase order device of the present invention, including control circuit, Phase-switching mechanism, circuit control
Make and partly include D1, D2, D3 rectifier bridge, R1, R2, R3, R4, R5, R6 divider resistance, C1, C2, C3, C4, C5, C6 filter capacitor,
IC1, IC2, IC3 voltage comparator, JC3 delay trigger circuits, J relays, D5 commutators and M2, R8 divider resistance composition voltage
Initialization circuit, Phase-switching mechanism includes：The electric magnet 14 in the left side of ratchet 20 is horizontally arranged at, ratchet 12 is installed on guide rod 4
With pawl restoring spring 11, postive stop baffle 13, the bottom of electric magnet 14 be provided with back-moving spring 19, and the bottom of ratchet 20 is provided with transmission
There is the moving contact 9 and 25 that rivet 8,17 is fixed wheel 21, the correspondence of drive 21 both sides, and moving contact 9,25 is connected by the first conductive connecting plate 33
Connect, the first conductive connecting plate 33 is mounted below conductive reed 27,30, the conductive connecting plate 28 that conductive reed 27,30 is installed with lower end
It is in close contact.The second conductive right side of connecting plate 28 is provided with output lead F, and ratchet 20 is uniformly provided with stationary contact around driver plate 21
15,16,24,22,10,7.
The low-voltage three-phase load imbalance phase order device, has used rectifier bridge, divider resistance, voltage comparator circuit, electricity
Pressure initialization circuit and delay trigger circuit are engaged the control circuit of composition, and control Phase-switching mechanism reaches output voltage certainly
Trend three-phase line, the higher technological means for mutually automatically switching of voltage so that three phase line to reach voltage basic
Balance.
The three-phase load unbalance phase order device is arranged on user's batch meter front end
Combined circuit schematic diagram of the present invention and Phase-switching mechanism structure figure are described as follows：
In circuit theory diagrams, A, B, C tri- compare power supply of D1, D2, D3 rectifier bridge respectively to being input into carries out rectification, makes friendship
Rheology is direct current, and R1, R2, R3, R4, R5, R6 composition bleeder circuit becomes respectively the voltage of direct current to A, B, C three-phase to be carried out point
Pressure, makes voltage reach the voltage range that can be detected, C1, C2, C3, C4, C5, C6 make detection voltage ripple to DC voltage filtering
Row is stable, three-phase voltage is rectified, partial pressure, after filtering, in respectively enteing voltage comparator circuit IC1, IC2, IC3, rectifier bridge D5
The voltage setting circuit of the composition of setting voltage adjustment resistance M2 divider resistances 8, power input is connected to Phase-switching mechanism the
On power takeoff leads F on two conductive connecting plates 28.Because the voltage for setting comes from an ABC three-phase voltages phase therein, so
The comparison voltage of setting, only does pressure reduction and compares to other two-phase power supply.When input comparison voltage A, B, the phases of C mono- or two-phase voltage height
When the voltage range of D5, M2, R8 setting, just there is one or two output pin to become in voltage comparator circuit IC1, IC2, IC3
High potential.Delay trigger circuit JC3 works, and after the delay time of M1 variable resistances setting, 9 feet export a triggering arteries and veins
Punching, relay J work, to the electric magnet 14 in Phase-switching mechanism running voltage is provided, and in Phase-switching mechanism, ratchet 20 is
6 deciles, when electric magnet 14 works, the ratchet 12 on top promotes ratchet to do 60 degree under the drive of guide rod 4 and rotates clockwise.
Also 60 degree of angle correspondence has been arranged on around ratchet 20, and with corresponding two stationary contacts static contact 15,16,24,22,10,7
Head is one group, and used as the junction point of a phase voltage, ratchet 20 drives rotating wheel 21 to be arranged on the correspondence of rotating wheel 21 when rotating 60 degree
Moving contact 9 and 25 on both sides is in close contact with two corresponding static contacts being fixed on housing 23, and moving contact 9 and 25 passes through
Rivet 8,17 is connected with the first conductive connecting plate 33, two conductive reeds 27,30 that the first conductive connecting plate 33 is installed below and below
The second conductive connecting plate 28 be in close contact, be so connected to the second conductive connecting plate 28 power takeoff leads F obtained one it is new
The voltage of switching.When the voltage switching on the power takeoff leads F on the second conductive connecting plate 28 is to three-phase voltage highest
A phase on when, the setting voltage of D5, M2, R8 is also improved simultaneously.And higher than other biphase comparison voltages, voltage comparator
All output pins of IC1, IC2, IC3 are electronegative potential.JC3 delay trigger circuits enter resting state, and IC1, IC2, IC3 are more electric
Road starts from new comparison.After work is completed, instant cut-off quits work electric magnet 14, and guide rod 4, ratchet 12 are in back-moving spring 19
In the presence of return original position.Before electrical equipment comes into operation, first debugging should be entered to circuit row with normal voltage, allow D5, M2, R8 to set
, higher than the voltage that voltage comparator ic 1,1 foot IC2,4 foot IC3,8 feet are input into, setting voltage scope can be according to transmission of electricity for fixed voltage
The voltage between phases actual requirement setting of circuit.The delay triggering signal that delay trigger circuit JC3 sends, mainly avoids power transmission line
Because of the reason moments such as electrical equipment starting or short time superpressure, the misoperation of blood pressure lowering generation and frequent operation, delay time can by M1 on road
Become resistance setting.
Various electronic components in control circuit, using standard industry level, make circuit stability reliability.Guarantee uses the longevity
Life, the electrical equipment ferrum 14 in Phase-switching mechanism adopts the high life coil block of high-quality, and guide rod 4 and the ratchet 12 of back-moving spring 19 are equal
Manufactured using high-quality steel, ratchet 20 and rotating wheel 21 are manufactured using high grade project nylon material integrated injection molding, moving contact 9 and 25
Manufactured using elastic preferably phosphorus copper plate, it is ensured that contact with static contact closely, static contact 15,16,24,22,10,7 adopt conduction compared with
Good copper material manufacture, upper-end contact point can take wear-resistant process to process, and conductive connecting plate 33 and 28 manufactures surface using high-quality copper material
Wear-resistant process is taken to process.Conductive reed 27 and 30 is adopted to cross and is ironed steel using elasticity preferably phosphorus copper plate manufacture, fixed column 5.
Shell 23 is molded using high, the ageing-resistant ABS material of good insulation preformance, hardness.The and of static contact 15,16,24,22,10,7
DIER conduction connecting plates 28 can be molded together with housing, it is ensured that stability, and two correspondence static contacts can be with copper conductor and voltage
Inlet wire binding post connects and composes a phase.
Claims (2)
1. a kind of low-voltage three-phase load imbalance phase order device, it is characterised in that：Including control circuit, Phase-switching mechanism,
Control circuit includes the three-phase voltage rectification circuit being made up of tri- groups of rectifier bridges of D1, D2, D3, by R1, R2, R3, R4, R5, R6 group
Into three-phase voltage bleeder circuit, the filter circuit that the three-phase voltage to partial pressure is filtered is constituted by C1, C2, C3, C4, C5, C6,
Voltage comparator circuit is carried out respectively to three-phase voltage by what IC1, IC2, IC3 were constituted, by rectifier bridge D5 adjustable resistors M2 and electricity
The setting comparison voltage circuit of resistance R8 compositions, the delay trigger circuit being made up of JC3, M1, power supply conveying relay J；Phase place is cut
Converting mechanism is included in ratchet（20）, voltage inlet wire binding post（1）The same side and and ratchet（20）The electric magnet of parallel installation
（14）, guide rod（4）Upper end is provided with ratchet（12）, pawl restoring spring（11）, postive stop baffle（13）, there is reset electric magnet lower end
Spring（19）, ratchet（20）Lower end is provided with rotating wheel（21）, while rotating wheel（21）By fixed column（5）, jump ring（6）Fixed peace
Dress, rotating wheel（21）Both sides correspondence position be separately installed with a moving contact, rotating wheel（21）Surrounding is provided with static contact
（15、16、24、22、10、7）, moving contact（9、25）By the first conductive connecting plate（33）Connection, the first conductive connecting plate（33）Lower section is right
Conductive reed should be installed（27、30）, and with the second of lower end the conductive connecting plate（28）It is in close contact, the second conductive connecting plate（28）One
There is the wire F of connection at end.
2. low-voltage three-phase load according to claim 1 imbalance phase order device, it is characterised in that by D5, M2, R8 group
Into setting comparison voltage circuit input power be connected to the second conductive connecting plate（28）On wire F on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310581053.2A CN104659796B (en) | 2013-11-19 | 2013-11-19 | Automatic phase modulator for low-voltage three-phase load unbalance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310581053.2A CN104659796B (en) | 2013-11-19 | 2013-11-19 | Automatic phase modulator for low-voltage three-phase load unbalance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104659796A CN104659796A (en) | 2015-05-27 |
| CN104659796B true CN104659796B (en) | 2017-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310581053.2A Expired - Fee Related CN104659796B (en) | 2013-11-19 | 2013-11-19 | Automatic phase modulator for low-voltage three-phase load unbalance |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105048458A (en) * | 2015-08-20 | 2015-11-11 | 国网山东高唐县供电公司 | Automatic phase selector for residential electric meter |
| CN106130048A (en) * | 2016-08-26 | 2016-11-16 | 徐丽 | Platform district three-phase load and the method for user's terminal voltage balanced adjustment and device thereof |
| CN106684893A (en) * | 2016-12-12 | 2017-05-17 | 国网北京市电力公司 | Three-phase imbalance adjustment control method and control equipment |
| CN107769232A (en) * | 2017-12-07 | 2018-03-06 | 徐丽 | The bascule of public taiwan area three-phase load based on live electric current and its application |
| DE102018214747A1 (en) * | 2018-08-30 | 2020-03-05 | Siemens Aktiengesellschaft | Device for a low-voltage circuit |
| CN110880890B (en) * | 2019-11-05 | 2021-10-26 | 武汉武水电气技术有限责任公司 | Low pressure hydraulic generator protection system |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4112274A (en) * | 1976-02-04 | 1978-09-05 | General Power Corp. | Electrical control |
| US4804933A (en) * | 1988-04-01 | 1989-02-14 | Brown Industrial Gas, Inc. | Automatic transfer switch |
| CN2235152Y (en) * | 1995-01-16 | 1996-09-11 | 陆立舟 | Change-over combined switch |
| CN2508446Y (en) * | 2001-09-28 | 2002-08-28 | 王恩起 | Reactive automatic compensation control switch of multiple high-voltage capacitor |
| WO2010014213A1 (en) * | 2008-08-01 | 2010-02-04 | Tyco Electronic Corporation | Switching device |
| CN201698919U (en) * | 2010-06-29 | 2011-01-05 | 李明明 | Novel tap changer |
| CN202150706U (en) * | 2011-08-19 | 2012-02-22 | 济南博源捷讯科技有限公司 | Three-phase load early warning and rapidly adjusting apparatus |
| CN103337867A (en) * | 2013-06-28 | 2013-10-02 | 国家电网公司 | Low voltage load online phase modulation device and phase modulation method thereof |
-
2013
- 2013-11-19 CN CN201310581053.2A patent/CN104659796B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4112274A (en) * | 1976-02-04 | 1978-09-05 | General Power Corp. | Electrical control |
| US4804933A (en) * | 1988-04-01 | 1989-02-14 | Brown Industrial Gas, Inc. | Automatic transfer switch |
| CN2235152Y (en) * | 1995-01-16 | 1996-09-11 | 陆立舟 | Change-over combined switch |
| CN2508446Y (en) * | 2001-09-28 | 2002-08-28 | 王恩起 | Reactive automatic compensation control switch of multiple high-voltage capacitor |
| WO2010014213A1 (en) * | 2008-08-01 | 2010-02-04 | Tyco Electronic Corporation | Switching device |
| CN201698919U (en) * | 2010-06-29 | 2011-01-05 | 李明明 | Novel tap changer |
| CN202150706U (en) * | 2011-08-19 | 2012-02-22 | 济南博源捷讯科技有限公司 | Three-phase load early warning and rapidly adjusting apparatus |
| CN103337867A (en) * | 2013-06-28 | 2013-10-02 | 国家电网公司 | Low voltage load online phase modulation device and phase modulation method thereof |
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