CN205304250U - Low -voltage distribution electricity -saving appliance - Google Patents
Low -voltage distribution electricity -saving appliance Download PDFInfo
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- CN205304250U CN205304250U CN201620031434.2U CN201620031434U CN205304250U CN 205304250 U CN205304250 U CN 205304250U CN 201620031434 U CN201620031434 U CN 201620031434U CN 205304250 U CN205304250 U CN 205304250U
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- coupling coil
- self coupling
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Abstract
The utility model discloses a low -voltage distribution electricity -saving appliance belongs to economize on electricity equipment field. This electricity -saving appliance connects between distribution transformer and user's consumer, and the circuit part of electricity -saving appliance comprises three -phase winding and corresponding self coupling coil. Winding and self coupling loop formation step up transformer, the one end of every phase winding links to each other rather than the one end that corresponds the self coupling coil to link to each other with one of three -phase distribution line, the other end of every phase winding links to each other with the distribution line of user's consumer, the mutual be connected together of the other end of three -phase self coupling coil to link to each other with distribution system's zero line. This low -voltage distribution electricity -saving appliance will feedback the electric wire netting with unnecessary voltage through step up transformer, and being the step -down economize on electricity and feeding back the dual economize on electricity principle of economizing on electricity of adoption reaches the purpose of saving the electric energy and prolonging the life of consumer.
Description
Technical field
The present invention relates to energy-saving device field, particularly relate to a kind of low-voltage distribution electricity economizer.
Background technology
Current domestic power supply department is in power transmission process, in order to reduce the line loss in power transmission process, often with higher voltage transmission, this causes that user side distribution transformer is after power transmission and transformation, its output voltage will be typically higher than about the 5%-10% of load voltage value, so, the various electrical equipments of user the actual voltage born often higher than design time rated voltage. Long-term higher voltage, not only can not allow electrical equipment more effectively work, become the main cause of electrical equipment premature breakdown on the contrary; Meanwhile, higher voltage also creates unnecessary electricity charge spending, adds the financial burden of user.
The technology that current electricity-saving appliance adopts is broadly divided into two big classes, and a class is the copped wave electricity-saving appliance of using silicon controlled technology, the another kind of reactance style energy saving device being to apply electromagnetic conversion technology. The former is based on the chopping depressuring principle of semiconductor switch technology, namely complete sine wave is cut except a part, thus can produce substantial amounts of electric harmonic pollution, has had a strong impact on the quality of power supply. The latter is application electromagnetic conversion technology, and output is complete sine wave, does not produce electric harmonic, power savings better, long service life, big than chopper-type electricity-saving appliance that capacity also can do, but relatively costly, volume is also bigger.
Patent 200610112318.4 discloses a kind of electricity-saving appliance adjusting coil with balance phase place, this electricity-saving appliance is based on magnetic voltage-regulation principle, by reducing the voltage of electric line, and with permutator, arbitrarily change between different taps according to required output voltage, before this electricity-saving appliance is connected to power transformer, the high-pressure side of namely power transmission and distribution. the advantage of this invention is to stablize outlet side voltage according to the closedown that the height of line voltage automatically controls electric power switch by feedback element, reach the purpose that constant voltage is powered and economized on electricity, but this invention also has obvious weak point: 1) this invention by every phase major loop coil rotating around on two iron cores, it is connected on high-pressure side, when input side voltage height, by adjusting the magnitude of voltage improved on major loop coil, High voltage output side voltage constant is kept with major loop coil energy storage, the capacity of this electricity-saving appliance is very big, and processing technology requires height, cost is also correspondingly higher,2) phase place adjusts on the coil corresponding iron core being wound on correspondence respectively, adopts delta connection, by power switch conversion and control, when power switch damages, by cutting off the electric power of whole piece supply line, affects normal productive life, thus reliability is relatively low.
Application number be 201320096019.1 utility model patent disclose a kind of three-dimensional appendiron core transformer, also the purpose of economize on electricity can be reached, the structure adopted is similar to the patent of invention that application number is 200610112318.4 with principle, by complicated control circuit, automatically control on-load voltage regulating switch and adjust high-pressure side number of coils, utilize transformer principle, change on high-tension side voltage, so that the voltage exporting low-pressure side remains unchanged, this patent also can reach the purpose that constant voltage is powered and economized on electricity, but this invention has weak point too: 1) control circuit complex structural designs, relatively costly, too increase fault rate simultaneously, 2) on-off control, switching damage, it will whole distribution network system is impacted are adopted, 3) the bad maintenance of three-phase equilibrium, harmonic wave serious interference, poor reliability.
Application number be 200810305974.5 patent of invention disclose stabilizing feedback type electricity-saving device, this electricity-saving appliance, with controlling switch, automatically selects out line voltage value, before this electricity-saving appliance is also attached to power transformer, the high-pressure side of power transmission and distribution. Adopt electromagnetic conversion principle, judgement when its feedback is to be embodied in voltage levels, then uses and has the magnitude of voltage carried on adjustment switch adjustment primary coil to keep output voltage values constant, its weak point: 1) circuit structure complexity, if raising capacity, cost of manufacture certainly will be increased; 2) adopting permutator, switching switch and starting switch, all there is the probability of switching damage, reduce the reliability of system, the probability of the normal operation affecting distribution system increases; 3) judgement when overtension is too low regulates, it is necessary to IGCT action, switch motion, and reaction is both needed to certain time, it is impossible to quickly regulate.
Application number is the utility model patent of 200720199400.5 is on-load voltage regulation, disclose a kind of low-voltage distribution electricity economizer, this electricity-saving appliance includes reactor, multiple electrical switch and an independent winding, independent winding is divided into multiple winding by being provided with multiple tap, again through the secondary windings in series of multiple electrical switches Yu reactor, electromagnetic conversion principle is utilized to sense winding output voltage after overregulating at secondary. Use self coupling coil, only at low-pressure side current-limiting reactor, reactor carries sensing Secondary Winding by iron core, one winding of secondary windings in series or self coupling coil, self coupling coil is divided into several tap windings, and each winding is separate each other, and respectively by different on-off control, connecting each other, wherein phase winding two end is received on low-pressure side electrical network. It is disadvantageous in that: 1) low-pressure side voltage adjusting range is relatively low, only 0-30V, poor for applicability; 2) needing to arrange the measure loop of complexity on low-pressure side electrical network, capacity boost is limited, and cost also will improve; 3) on-off control is adopted, switching damage, impact is not had the effect of economize on electricity; 4) applicable cases as far as single-phase circuit have been introduced, the problem that can there is three-phase equilibrium harmony wave interference in three-phase circuit is applied; 5) adopting two iron cores, one of them iron core arranges multiple tap, complex manufacturing technology; 6) the tap output voltage of self coupling coil is to electrical equipment, simply regulates output voltage, namely only has the function of voltage-reducing and electricity-saving.
Existing electricity-saving appliance, whether chopper-type or magnetic voltage-regulation type, it is common to adopt permutator to realize multi-gear adjustment and carry out regulated output voltage, reduce voltage when the voltage of electrical power trans mission/distribution system is higher, on the low side time booster tension. But, for high voltage electric-saver, the voltage ratio of conversion is higher, often reaches about 10KV, thus switch is pressure also corresponding relatively high, and this improves the requirement to permutator, and meanwhile, the control circuit of permutator also becomes complicated accordingly; When permutator damages, whole electricity-saving appliance needs first power-off again to change high-voltage switch gear again, thus, there is the shortcomings such as difficult in maintenance, use is inconvenient, cost is high, bulky in this high voltage electric-saver. Low-voltage distribution electricity economizer, also uses permutator equally, although the voltage born only has about 400V, but too increases the cost of electricity-saving appliance, reduces the reliability of electricity-saving appliance. This patent provides a kind of New Low Voltage distribution electrisity-saving device, this electricity-saving appliance adopts magnetic voltage-regulating technique, without permutator, adopt the oil immersed type structure of conventional power transformator, by reducing voltage, distribution voltage is adjusted near the rated voltage of electrical equipment, and by electromagnetic energy transfer principle by unnecessary voltage feedback telegram in reply net, be reached for user and save electric energy, extend the purpose in the service life of electrical equipment. This electricity-saving appliance will not bring harmonic pollution to electrical network, has the advantage such as reliability height, cost low, compact conformation, Maintenance free.
Summary of the invention
1. invention to solve the technical problem that
The problem causing power wastage for the voltage ripple of power network of prior art, the invention provides a kind of low-voltage distribution electricity economizer. It not only have employed voltage-reducing and electricity-saving principle, additionally uses magnetic energy feedback electricity principle, by unnecessary Voltage Feedback telegram in reply net, offsets input current, reach the purpose of double economize on electricity in the process of feedback.
2. technical scheme
For solving the problems referred to above, technical scheme provided by the invention is:
A kind of low-voltage distribution electricity economizer, including three-phase windings, iron core and self coupling coil, three-phase windings and self coupling coil have common iron core, one end of three-phase windings is connected with distribution wire, the other end is connected with electrical equipment distribution wire, one end of self coupling coil is connected with one end of three-phase windings, and the other end of self coupling coil is connected with the zero line N of distribution wire.
Preferably, three-phase windings includes A phase winding, B phase winding and C phase winding, A phase winding includes A phase winding terminal I and A phase winding terminal II, and B phase winding includes B phase winding terminal I and B phase winding terminal II, and C phase winding includes C phase winding terminal I and C phase winding terminal II.
Preferably, self coupling coil includes A phase self coupling coil, B phase self coupling coil and C phase self coupling coil, A phase self coupling coil includes A phase self coupling coil terminals I and A phase self coupling coil terminals II, B phase self coupling coil includes B phase self coupling coil terminals I and B phase self coupling coil terminals II, C phase self coupling coil includes C phase self coupling coil terminals I and C phase self coupling coil terminals II.
Preferably, iron core includes A phase iron core, B phase iron core and C phase iron core, A phase winding and A phase self coupling coil have common A phase iron core, B phase winding and B phase self coupling coil have common B phase iron core, C phase winding and C phase self coupling coil have common C phase iron core, and the corresponding every phase self coupling coil of every phase winding constitutes booster transformer by total every phase iron core.
Preferably, A phase winding terminal I and distribution wire L1It is connected, A phase winding terminal II and electrical equipment distribution wire L1' be connected, A phase self coupling coil terminals I and A phase winding terminal I is connected, and A phase self coupling coil terminals II is connected with the zero line N of distribution wire.
Preferably, B phase winding terminal I and distribution wire L2It is connected, B phase winding terminal II and electrical equipment distribution wire L2' be connected, B phase self coupling coil terminals I and B phase winding terminal I is connected, and B phase self coupling coil terminals II is connected with the zero line N of distribution wire.
Preferably, C phase winding terminal I and distribution wire L3It is connected, C phase winding terminal II and electrical equipment distribution wire L3' be connected, C phase self coupling coil terminals I and C phase winding terminal I is connected, and C phase self coupling coil terminals II is connected with the zero line N of distribution wire.
Preferably, three-phase windings, iron core and self coupling coil, put in flange-cooled oil tank of transformer after forming a whole, in fuel tank, fill transformer oil.
3. beneficial effect
Adopt technical scheme provided by the invention, compared with prior art, have the advantages that
(1) present invention is without permutator, is made up of coil and iron core, and adopts oil immersed type structure, it means that electricity-saving appliance is as power transformer, and reliability is high; Not having permutator, this just eliminates the control circuit of complexity, without the electric power cutting off whole piece supply line because permutator damages, thus extremely easy to use, it is not required that special manager safeguards the properly functioning of electricity-saving appliance;
(2) present invention not only have employed voltage-reducing and electricity-saving principle, additionally uses magnetic energy feedback electricity principle, by unnecessary Voltage Feedback telegram in reply net, offsets input current, reach the purpose of double economize on electricity in the process of feedback;
(3) present invention adopts magnetic voltage-regulating technique, and its capacity is consistent with the capacity of distribution transformer, and manufacturing process is identical with distribution transformer, thus capacity can accomplish MW level, is especially suitable for the operating mode enterprise that power consumption is huge;
(4) present invention adopts oil immersed type to seal structure, does not worry the destruction of dust, dust storm, can be competent at severe working environment, durable in use;
(5) owing to electrical network is to adopt higher Voltage Power, electrical equipment long-term work is in the state higher than rated voltage, significantly impacting the service life of electrical equipment, by being reduced near the rated voltage of electrical equipment by running voltage, the service life of electrical equipment obtains prolongation;
(6) structural principle of the present invention is simple, cost of manufacture is low, be easily achieved.
Accompanying drawing explanation
Fig. 1 is the electrical structure diagram of this electricity-saving appliance;
Fig. 2 is this electricity-saving appliance connection schematic diagram in a power distribution system;
Fig. 3 is this electricity-saving appliance schematic diagram.
Number in the figure illustrates:
11, A phase winding; 12, B phase winding; 13, C phase winding; 21, A phase self coupling coil; 22, B phase self coupling coil; 23, C phase self coupling coil; 31, A phase ferrum core; 32, B phase ferrum core; 33, C phase ferrum core; 111, A phase winding terminal I; 112, B phase winding terminal I; 113, C phase winding terminal I; 121, A phase winding terminal II; 122, B phase winding terminal II; 123, C phase winding terminal II; 211, A phase self coupling coil terminals I; 212, B phase self coupling coil terminals I; 213, C phase self coupling coil terminals I; 221, A phase self coupling coil terminals II; 222, B phase self coupling coil terminals II; 223, C phase self coupling coil terminals II; 41, common port; 1, fuel tank; 5, oil level indicator; 43, pile crown I; 42, pile crown II; 52, pile crown III; 6, three-phase high-voltage input; 61, distribution transformer; 7, electricity-saving appliance; 8, electrical equipment.
Detailed description of the invention
For further appreciating that present disclosure, in conjunction with drawings and Examples, the present invention is described in detail.
Embodiment 1
A kind of low-voltage distribution electricity economizer, according to the standard technology of 315KVA power transformer, iron core is laminated by the stalloy that thickness is 0.35mm, and this can reduce the loss of electricity-saving appliance self;Every phase winding is 120mm by sectional area2Copper bar bending form, corresponding every phase self coupling coil is 6mm by sectional area2Copper conductor be coiled into; Both constitute booster transformer by total corresponding every phase iron core, and no-load voltage ratio isWherein U1For winding voltage, U2For corresponding self coupling coil voltage, P1And P2The respectively power of winding and coil, N1/N2Value be 15-25.
Carbon steel sheet thick for 3mm is selected to prepare fuel tank 1, the fixing nail in four positions of the bottom welding of fuel tank 1, the lid of fuel tank 1 is determined connection three-phase distribution line L in advance1��L2��L3The position of 3 pile crown I43, connect three phase electric equipment distribution live wire L '1��L��2��L��3The position of 3 pile crown II42, and connect the position of the pile crown III52 of zero line N.
The present invention, without permutator, is made up of coil and iron core, and adopts oil immersed type structure, does not worry the destruction of dust, dust storm on the one hand, can be competent at severe working environment, durable in use; Electricity-saving appliance 7 can as power transformer on the other hand, and reliability is high; Not having permutator, this just eliminates the control circuit of complexity, without the electric power cutting off whole piece supply line because permutator damages, thus extremely easy to use, it is not required that special manager safeguards the properly functioning of electricity-saving appliance 7.
Being placed in fuel tank 1 by the booster transformer of dry type, nail screw hole at four diagonal angles bottom booster transformer is fixed in four positions bottom fuel tank 1. Every phase winding terminal I (namely respectively A phase winding terminal I111, B phase winding terminal I112 and C phase winding terminal I113) in the electricity-saving appliance 7 assembled is received on the pile crown I43 fixed on fuel tank 1 with being flexible coupling; Every phase winding terminal II I (namely respectively A phase winding terminal II 121, B phase winding terminal II 122 and C phase winding terminal II 123) is with being flexible coupling and pile crown II42 fixes, with that be flexible coupling in order that prevent big electric current from the porcelain vase of pile crown is produced destruction.
Three-phase high-voltage input 6 is connected on the primary of distribution transformer 61, and namely the secondary of distribution transformer 61 is three-phase distribution line L1��L2��L3; Every phase self coupling coil terminals II (namely respectively A phase self coupling coil terminals II221, B phase self coupling coil terminals II222 and C phase self coupling coil terminals II223) is all connected together simultaneously, form common port 41, connect together with the annealed copper wire of tape insulation sleeve pipe, then receive on the pile crown III52 of fuel tank 1, in order that maintenance phase equilibrium, ensure the voltage symmetry of three-phase output, provide more stable voltage for electrical equipment; Pile crown III52 meets the zero line N of three-phase distribution line, the three phase electric equipment distribution live wire L ' of electricity-saving appliance 71��L��2��L��3It is connected with electrical equipment 8.
In distribution system, the electric current on current ratio live wire on zero line N is little, and therefore, pile crown I43 and the diameter of pile crown II42 that the diameter of the pile crown III52 that the common port 41 of three self coupling coils connects connects than the two ends of three-phase windings are little, as shown in Figure 3.
In fuel tank 1, No. 10 transformer oil are added by oil level indicator 5, until fuel tank is filled it up with, the observation window that can pass through oil level indicator 5 in electricity-saving appliance 7 follow-up operation checks the position of pasta, ensure that electricity-saving appliance 7 works in the secure state, the present invention adopts oil immersed type to seal structure, do not worry the destruction of dust, dust storm, severe working environment can be competent at, durable in use.
Booster transformer only has the winding of low-pressure side to access distribution wire (i.e. three-phase distribution line), this umber of turn is little, thus the loss of electricity-saving appliance 7 self is also little, this low-voltage distribution electricity economizer does not adopt any permutator, do not introduce extra switching damage, bring harmonic pollution also without to electrical network. The present invention not only have employed voltage-reducing and electricity-saving principle, additionally uses magnetic energy feedback electricity principle, by unnecessary Voltage Feedback telegram in reply net, offsets input current, reach the purpose of double economize on electricity in the process of feedback; Simultaneously, owing to electrical network is to adopt higher Voltage Power, electrical equipment long-term work, in the state higher than rated voltage, significantly impacts the service life of electrical equipment, by being reduced near the rated voltage of electrical equipment by running voltage, the service life of electrical equipment obtains prolongation.
Low-voltage distribution electricity economizer of the prior art, reach the capacity of same rank, cost is big, the present invention adopts magnetic voltage-regulating technique, its capacity is consistent with the capacity of distribution transformer 61, manufacturing process is identical with distribution transformer 61, thus capacity can accomplish MW level, is especially suitable for the operating mode enterprise that power consumption is huge.
Embodiment 2
The present embodiment is with embodiment 1, wherein, and N1/N2Value be 15.
Embodiment 3
The present embodiment is with embodiment 1, wherein, and N1/N2Value be 25.
Embodiment 4
The present embodiment is with embodiment 1, wherein, and N1/N2Value be 20.
Embodiment 5
When line voltage continues on the low side, technical scheme is made change, and one end of self coupling coil is connected with distribution wire, and the other end is connected with electrical equipment distribution wire, one end of three-phase windings is connected with one end of self coupling coil, and the other end of three-phase windings is connected with the zero line N of distribution wire.
By the pile crown I43 of electricity-saving appliance in Fig. 27 respectively with three phase electric equipment distribution live wire L '1��L��2��L��3Connect, the pile crown II42 of electricity-saving appliance 7 respectively with three-phase distribution line L1��L2��L3Connect.
Embodiment 6
The present embodiment is similar with embodiment 5 with embodiment 1, by less for the Capacity design of electricity-saving appliance 7, can be used between power distribution network and household electricity, electricity-saving appliance 7 is designed to single-phase adjustment, coulomb balance between household electricity and electrical network, it is ensured that the safety of household electricity, reliable and stable.
Schematically the present invention and embodiment thereof being described above, this description does not have restricted, and shown in accompanying drawing is also one of embodiments of the present invention, and actual structure is not limited thereto. So, if those of ordinary skill in the art is enlightened by it, when without departing from the invention objective, design the frame mode similar to this technical scheme and embodiment without creationary, protection scope of the present invention all should be belonged to.
Claims (6)
1. a low-voltage distribution electricity economizer, it is characterized in that: include three-phase windings, iron core and self coupling coil, three-phase windings and self coupling coil have common ferrum core, one end of three-phase windings is connected with distribution wire, the other end is connected with electrical equipment distribution wire, one end of self coupling coil is connected with one end of three-phase windings, the other end of self coupling coil is connected with the zero line N of distribution wire, three-phase windings includes A phase winding (11), B phase winding (12) and C phase winding (13), A phase winding (11) includes A phase winding terminal I (111) and A phase winding terminal II (121), B phase winding (12) includes B phase winding terminal I (112) and B phase winding terminal II (122), C phase winding (13) includes C phase winding terminal I (113) and C phase winding terminal II (123), iron core includes A phase iron core (31), B phase iron core (32) and C phase iron core (33), A phase winding (11) and A phase self coupling coil (21) have common A phase iron core (31), B phase winding (12) and B phase self coupling coil (22) have common B phase iron core (32), C phase winding (13) and C phase self coupling coil (23) have common C phase iron core (33), the corresponding every phase self coupling coil of every phase winding constitutes booster transformer by total every phase iron core.
2. a kind of low-voltage distribution electricity economizer according to claim 1, it is characterized in that: self coupling coil includes A phase self coupling coil (21), B phase self coupling coil (22) and C phase self coupling coil (23), A phase self coupling coil (21) includes A phase self coupling coil terminals I (211) and A phase self coupling coil terminals II (221), B phase self coupling coil (22) includes B phase self coupling coil terminals I (212) and B phase self coupling coil terminals II (222), C phase self coupling coil (23) includes C phase self coupling coil terminals I (213) and C phase self coupling coil terminals II (223).
3. a kind of low-voltage distribution electricity economizer according to claim 1, it is characterised in that: A phase winding terminal I (111) and distribution wire L1It is connected, A phase winding terminal II (121) and electrical equipment distribution wire L '1Being connected, A phase self coupling coil terminals I (211) and A phase winding terminal I (111) is connected, and A phase self coupling coil terminals II (221) is connected with the zero line N of distribution wire.
4. a kind of low-voltage distribution electricity economizer according to claim 2, it is characterised in that: B phase winding terminal I (112) and distribution wire L2It is connected, B phase winding terminal II (122) and electrical equipment distribution wire L '2Being connected, B phase self coupling coil terminals I (212) and B phase winding terminal I (112) is connected, and B phase self coupling coil terminals II (222) is connected with the zero line N of distribution wire.
5. a kind of low-voltage distribution electricity economizer according to claim 3, it is characterised in that: C phase winding terminal I (113) and distribution wire L3It is connected, C phase winding terminal II (123) and electrical equipment distribution wire L '3Being connected, C phase self coupling coil terminals I (213) and C phase winding terminal I (113) is connected, and C phase self coupling coil terminals II (223) is connected with the zero line N of distribution wire.
6. a kind of low-voltage distribution electricity economizer according to claim 1, it is characterised in that: three-phase windings, iron core and self coupling coil, put in flange-cooled oil tank of transformer after forming a whole, in fuel tank, fill transformer oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620031434.2U CN205304250U (en) | 2016-01-11 | 2016-01-11 | Low -voltage distribution electricity -saving appliance |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620031434.2U CN205304250U (en) | 2016-01-11 | 2016-01-11 | Low -voltage distribution electricity -saving appliance |
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| CN205304250U true CN205304250U (en) | 2016-06-08 |
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| CN201620031434.2U Expired - Fee Related CN205304250U (en) | 2016-01-11 | 2016-01-11 | Low -voltage distribution electricity -saving appliance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105470968A (en) * | 2016-01-11 | 2016-04-06 | 安徽工业大学 | Low-voltage distribution electricity-saving device |
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2016
- 2016-01-11 CN CN201620031434.2U patent/CN205304250U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105470968A (en) * | 2016-01-11 | 2016-04-06 | 安徽工业大学 | Low-voltage distribution electricity-saving device |
| CN105470968B (en) * | 2016-01-11 | 2018-01-09 | 安徽工业大学 | A kind of low-voltage distribution electricity economizer |
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