CN202159568U - Three-level on-load adjusting capacity distribution transformer - Google Patents
Three-level on-load adjusting capacity distribution transformer Download PDFInfo
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- CN202159568U CN202159568U CN2011201285575U CN201120128557U CN202159568U CN 202159568 U CN202159568 U CN 202159568U CN 2011201285575 U CN2011201285575 U CN 2011201285575U CN 201120128557 U CN201120128557 U CN 201120128557U CN 202159568 U CN202159568 U CN 202159568U
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- 239000004519 grease Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
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Abstract
The utility model provides a three-level on-load adjusting capacity distribution transformer, belonging the field of a device which is provided with a switching tap without the need for interrupting load current. The transformer can automatically detect the capacity of the carried load to determine the reasonable running capacity mode of the transformer based on the decision and judgment, thus, the transformer realizes the automatic adjustment of the capacity under the condition of uninterrupted power of the transformer. The transformer provided includes a transformer body, an on-load adjusting capacity switch, an on-load adjusting capacity control device, a high voltage electric control switch, a low voltage electric control switch, and a current transformer, and the capacity transformation is realized by the on-load adjusting capacity control device, the on-load adjusting capacity switch, the high voltage electric control switch, and the low voltage electric control switch. The transformer provided completes the adjustment of the capacity of the transformer to enable the on-load adjusting capacity distribution transformer to run in an economical way under the condition of meeting the needs of load all the time without the need for power interruption.
Description
Technical field
The utility model belongs to have and switches tap and the device field of non-interrupt load electric current is specifically related to a kind of three grades of loaded capacity-regulated distribution transformers.
Background technology
At present, domestic 10kV low capacity does not have load capacitance-adjustable transformer production technology comparative maturity, and generally when changing according to the season, having a power failure does not have excitation change transformer capacity operational mode.No-load is transferred and is held distribution transformer owing to receive the restriction of transferring appearance switch contact structure, and 10kV electric pressure and the capacity matured product below 315kVA is only arranged, and has greatly restricted promoting the use of of capacitance-adjustable transformer.The nationwide has been used nearly about 10,000 capacitance-adjustable transformer altogether, has wherein used 8562 in the rural power grids.Can not charged pondage because there is not load capacitance-adjustable transformer, have influence on user's power supply reliability; Do not have load capacitance-adjustable transformer in addition and be inappropriate for frequent adjusting, generally only carry out seasonal adjustment.In season during load transition, most power supply stations with distribution transformer the moon electricity sales amount as transferring the foundation of holding, lack promptness and science.Because a month electricity sales amount is that copying of last month seen electric weight, hold foundation with it as the accent of next month, can cause transfer hold untimely, the effect that causes damage and can not give full play to capacitance-adjustable transformer to capacitance-adjustable transformer.
Loaded capacity-regulated transformer can effectively be removed existing existing problem of no load capacitance-adjustable transformer and limitation, and auto-real-time monitoring and control are according to the capacity regulating of carrying out of actual load size reasonable.From the domestic and foreign literature lookup result; The external related data of not seeing the loaded capacity-regulated transformer technical elements as yet; Domestic capacitance-adjustable transformer control system with loaded capacity-regulated function also rarely has report; Early production is only applicable to the automatic control of the special-purpose loaded capacity-regulated transformer in oil field, and big or small rated capacity also is in the pilot operation and progressively improves the stage than the application near the loaded capacity-regulated distribution transformer in the two poles of the earth of 3: 1 or 2: 1 in electric power system.
China's rural electricity consumption mainly concentrates on summer, Qiu Liangji, and mainly be electric consumption on lighting all the other seasons, and in busy farming season, transformer overload operation phenomenon is serious, and in electricity consumption dull season, load factor is low, has occurred the phenomenon of " low load with strong power " again.China's rural power grids distribution transformer loss at present remains serious, and power load is seasonal and period characteristic is obvious, and power load presents tangible stepped distribution.Original the two poles of the earth capacity regulating can not satisfy distribution transformer economical operation demand in the area that the sub-load fluctuation presents the stairstepping distribution.Distribution transformer no-load loss is bigger, and the energy waste phenomenon is serious.
The utility model content
For overcoming the defective of prior art, the purpose of the utility model is to propose a kind of three grades of loaded capacity-regulated distribution transformers, and said transformer has three kinds of rated capacities; Can detect institute's on-load size automatically; Judge to confirm the rational working capacity mode of transformer through decision-making, under the transformer live state, realize that three kinds of rated capacities adjust automatically; Distribution transformer no-load loss is reduced greatly, and the saving energy and decreasing loss effect is obvious.
For realizing the utility model purpose, this adopts following technical scheme to realize:
A kind of three grades of loaded capacity-regulated distribution transformers; Said transformer comprises the transformer body that has high pressure winding and low pressure winding; Loaded capacity-regulated switch; Its improvements are that said transformer comprises loaded capacity-regulated control device, with the high-pressure electric control switch of the electric connection of said loaded capacity-regulated control device, low-pressure electric controlled switch and load current instrument transformer.
Another optimal technical scheme of the present invention is: said transformer body is provided with bushing and low-tension bushing, and said high pressure winding is provided with the high pressure tapping, and said low pressure winding is provided with the low pressure tapping.
Another optimal technical scheme of the present invention is: the automatically controlled leading-out terminal of the secondary leading-out terminal of said load current instrument transformer, load current instrument transformer, the automatically controlled leading-out terminal of said high-pressure electric control switch, said low-pressure electric controlled switch and the control end of said loaded capacity-regulated switch respectively with the electric connection of said loaded capacity-regulated control device.
Another optimal technical scheme of the present invention is: join with same high voltage source after the process high-pressure electric control switch in parallel of said three grades of loaded capacity-regulated distribution transformer high-pressure sides, low-pressure side is joined with the load current instrument transformer through after the low-pressure electric controlled switch in parallel.
Another optimal technical scheme of the present invention is: said high-pressure electric control switch is connected with said bushing, and said low-pressure electric controlled switch is connected with said low-tension bushing.
Another optimal technical scheme of the present invention is: said transformer body is connected with said loaded capacity-regulated switch with the low pressure tapping through the high pressure tapping.
Another optimal technical scheme of the present invention is: said high pressure winding can be realized star connection, Y connection or delta connection, and said low pressure winding can be realized connect in parallel or connect in series.
Owing to adopted technique scheme, the beneficial effect of the utility model is:
1, transformer has three kinds of rated capacities
Two two-stage loaded capacity-regulated transformer bodies are made up of the high pressure winding that can realize star and delta connection and the low pressure winding of realizing the connection in series-parallel connection respectively; Realize change respectively through two loaded capacity-regulated switches of loaded capacity-regulated control device control to two transformer body high pressure windings and low pressure winding connection way; Control high-pressure electric control switch and low-pressure electric controlled switch are realized the high-low pressure parallel connection or the independent operating of two two-stage loaded capacity-regulated transformer bodies, make transformer have three kinds of rated capacities;
Be large, medium and small three kinds of rated capacities;
2, transformer is realized the adjustment of rated capacity automatically under powering-off state not
Control loaded capacity-regulated switch, transformer high-voltage electric-controlled switch and low-pressure electric controlled switch through loaded capacity-regulated control device; Change the bind mode of two-stage loaded capacity-regulated transformer body high pressure winding and low pressure winding; Under the transformer live state; Can realize large, medium and small three kinds of combined capacity operational modes conversion of three grades of loaded capacity-regulated distribution transformers automatically, possess three grades of loaded capacity-regulated functions;
3, reduce transformer noload losses
Loaded capacity-regulated control device can detect voltage, electric current, on off state parameter and the payload of three grades of loaded capacity-regulated distribution transformer low-pressure sides; Form three grades of loaded capacity-regulated control strategies based on payload and capacity regulating setting value; Judge that exporting control command controls loaded capacity-regulated switch, high-pressure electric control switch and low-pressure electric controlled switch motion; Accomplish star, angular transformation and the series and parallel conversion of the inner high and low pressure winding coil of transformer; Effectively avoid the state of " low load with strong power ", promptly reduced transformer noload losses;
4, energy savings
Transformer is accomplished the transformer capacity adjustment process under the state that need not have a power failure, make loaded capacity-regulated distribution transformer under the situation that satisfies workload demand all the time, move energy savings consumption with economized form.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further specified:
Fig. 1 is three grades of loaded capacity-regulated distribution transformer master-plans;
Fig. 2 is three grades of loaded capacity-regulated distribution transformer operation principles;
Fig. 3 is the loaded capacity-regulated switch winding diagram of the big capacity status high pressure of loaded capacity-regulated distribution transformer corner connection low pressure parallel connection;
Fig. 4 is the loaded capacity-regulated switch winding diagram of capacity status high pressure corner connection low pressure parallel connection in the middle of the loaded capacity-regulated distribution transformer;
Fig. 5 is that loaded capacity-regulated distribution transformer low capacity state high pressure star connects the low pressure loaded capacity-regulated switch winding diagram of connecting;
Reference numeral:
101,102-transformer body, 201,202,203,204,205,206-high-pressure electric control switch, 301,302,303,304,305, the low-pressure electric controlled switch of 306-; The loaded capacity-regulated control device of 4-, 501, the loaded capacity-regulated switch of 502-, 601,602-high pressure winding; 701,702-high pressure tapping, 801,802-low pressure winding, 901,902-low pressure tapping; 1001,1002-bushing, 1101, the 1102-low-tension bushing, 12-load current instrument transformer.
Embodiment
Be embodiments of the invention below, the technical scheme that the present invention realizes further specified below in conjunction with this accompanying drawing.
The utility model relates to a kind ofly can realize that three grades have to carry to transfer automatically and hold a distribution transformer, is to regulate the distribution transformer of rated capacity operational mode automatically.Said three grades of loaded capacity-regulated distribution transformers are applicable to that power load presents the place that tangible stepped distribution, electricity consumption are concentrated, the annual load factor is low, is applicable to building and upgrading of rural power grids.
Embodiment 1:
Fig. 1 is three grades of loaded capacity-regulated transformer master-plans.As shown in the figure; Three grades of loaded capacity-regulated distribution transformers comprise high-pressure electric control switch 201,202,203,204,205,206, low-pressure electric controlled switch 301,302,303,304,305,306, transformer body 101,102, load current instrument transformer 12 and loaded capacity-regulated control device 4, and said transformer body 101,102 is a two-stage loaded capacity-regulated transformer body.Two loaded capacity-regulated switch 501,502 technical performances are identical; Loaded capacity-regulated switch 501,502 of every loaded capacity-regulated distribution transformer body 101,102 configurations of two-stage; Be the loaded capacity-regulated switches 501 of transformer body 101 configurations; The loaded capacity-regulated switch 502 of transformer body 102 configurations; Loaded capacity-regulated switch 501,502 conversions can realize the change of two transformer bodies, 101,102 high pressure windings 601,602 and low pressure winding 801,802 bind modes, make every loaded capacity-regulated transformer body have two-stage rated capacity operational mode.Its structural principle is to control high-pressure electric control switch 201,202,203,204,205,206, low-pressure electric controlled switch 301,302,303,304,305,306 and loaded capacity-regulated switch 501,502 by two two-stage loaded capacity-regulated transformer bodies 101,102 (being installed in the shared casing) through loaded capacity-regulated control device 4 to realize the capacity conversion, makes it possess the composite type loaded capacity-regulated transformer of three grades of loaded capacity-regulated functions.
Its transformer body 101,102 parts are the automatically controlled separately switchings through loaded capacity-regulated switch 501,502; Make every phase high pressure winding 601,602 and every phase low pressure winding 801,802; Change bind mode (parallel connection or series connection); Make two the loaded capacity-regulated transformer bodies 101,102 that meet the parallel running condition combine the loaded capacity-regulated transformer of an overall operation, thereby realize that 101,102 parallel runnings of two loaded capacity-regulated transformer bodies are big capacity mode, capacity mode in the middle of a platform independent operates to; Middle capacity can carry out loaded capacity-regulated switching once more, and realization low capacity mode is moved.Three grades of loaded capacity-regulated distribution transformer high-pressure sides join through separately high-pressure electric control switch 201,202,203,204,205,206 parallel connection backs and same high voltage source; Its low-pressure side is equipped with load current instrument transformer 12 on the load circuit after low-pressure electric controlled switch 301,302,303,304,305,306 parallel connections separately; The control end of the automatically controlled leading-out terminal of the automatically controlled leading-out terminal of the secondary leading-out terminal of load current instrument transformer 12, high-pressure electric control switch 201,202,203,204,205,206 and low-pressure electric controlled switch 301,302,303,304,305,306, loaded capacity-regulated switch 501,502 respectively with loaded capacity-regulated control device 4 electric connections, constituting three grades of loaded capacity-regulated accent, to hold distribution transformers whole.High pressure tapping 701,702 and low pressure tapping 901,902 respectively with loaded capacity-regulated switch 501,502 electric connections.
Loaded capacity-regulated switch 501,502 is formed by switching grease chamber, quick mechanism, motor, manual spindle nose, pressure relief device, oil pumping joint etc.The switching grease chamber of loaded capacity-regulated switch 501,502 bottoms pass that the transformer oil case lid is contained in the oil tank of transformer and with fuel tank in the airtight isolation of transformer oil, switching the outside, grease chamber has wiring to lift one's head to be connected with the transformer lead joint.Quick mechanism is positioned at and switches the top, grease chamber and be communicated with it and exceed the transformer oil case lid, the mechanism, the gear that supply loaded capacity-regulated switch 501,502 to realize that fast velocity modulation is held is housed in it indicates electric device, motor stepping control piece etc.Switch the grease chamber and realize seal through the upper flange lid with outside.
Embodiment 2:
Fig. 2 is three grades of loaded capacity-regulated transformer operation principles.Three grades of loaded capacity-regulated transformers with a rated capacity 1000kVA are that its accent appearance principle of example explanation is: loaded capacity-regulated transformer is combined by 2 loaded capacity-regulated distribution transformers of 500kVA two-stage; When two transformers simultaneously during paired running; Reach its high appearance state, this moment, rated capacity was 1000kVA; When a two-stage loaded capacity-regulated transformer operation is only arranged, be middle capacity, this moment, rated capacity was 500kVA; When the operation of two-stage loaded capacity-regulated transformer is only arranged, and carry out 1: 2 loaded capacity-regulated after, this moment, rated capacity became 250kVA, so transformer can have 250kVA, 500kVA, three rated capacity grades of 1000kVA.
Embodiment 3:
Fig. 3 is the loaded capacity-regulated switch winding diagram of the big capacity status high pressure of loaded capacity-regulated transformer corner connection low pressure parallel connection.A, B, C, X, Y and Z represent the terminals of high pressure winding 601,602, a respectively among the figure
1, a
2, b
1, b
2, c
1, c
2, x
1, x
2, y
1, y
2, z
1And z
2The terminals of representing low pressure winding 701,702 respectively.Two loaded capacity-regulated transformer body 101,102 high pressure windings 601,602 are the triangle connected mode; Low pressure winding 801,802 is the connect in parallel mode; And high pressure winding 601,602, low pressure winding 801,802 correspondences are parallel running respectively mutually, and this moment, loaded capacity-regulated transformer was in the high-volume run mode.
Embodiment 4:
Fig. 4 is the loaded capacity-regulated switch winding diagram of capacity status high pressure corner connection low pressure parallel connection in the middle of the loaded capacity-regulated transformer.A, B, C, X, Y and Z represent the terminals of high pressure winding 601,602, a respectively among the figure
1, a
2, b
1, b
2, c
1, c
2, x
1, x
2, y
1, y
2, z
1And z
2The terminals of representing low pressure winding 701,702 respectively.One of two loaded capacity-regulated transformer bodies 101,102 are in running status; And high pressure winding 601,602 is the corner connection mode; Low pressure winding 801,802 is the connect in parallel mode; Another transformer body 101 or 102 is out of service, this moment the loaded capacity-regulated transformer integral body capacity operational mode that mediates.
Embodiment 5:
Fig. 5 is that loaded capacity-regulated transformer low capacity state high pressure star connects the low pressure loaded capacity-regulated switch winding diagram of connecting.A, B, C, X, Y and Z represent the terminals of high pressure winding 601,602, a respectively among the figure
1, a
2, b
1, b
2, c
1, c
2, x
1, x
2, y
1, y
2, z
1And z
2The terminals of representing low pressure winding 701,702 respectively.One of two loaded capacity-regulated transformer bodies 101,102 are in running status; And high pressure winding 601,602 connects mode for star; Low pressure winding 801,802 is the connect in series mode; Another transformer body 101 or 102 is out of service, and this moment, loaded capacity-regulated transformer integral body was in the low capacity operational mode.
The utility model is described according to specific exemplary embodiment here.It will be conspicuous under the scope that does not break away from the utility model, carrying out suitable replacement to one skilled in the art or revise.Exemplary embodiment only is illustrative, rather than to the restriction of the scope of the utility model, the scope of the utility model is by appended claim definition.
Claims (7)
1. three grades of loaded capacity-regulated distribution transformers; Said transformer comprises the transformer body (101,102) that has high pressure winding (601,602) and low pressure winding (801,802); Loaded capacity-regulated switch (501,502); It is characterized in that said transformer comprises loaded capacity-regulated control device (4); With the high-pressure electric control switch (201,202,203,204,205,206) of the electric connection of said loaded capacity-regulated control device (4), low-pressure electric controlled switch (301,302,303,304,305,306) and load current instrument transformer (12).
2. a kind of three grades of loaded capacity-regulated distribution transformers as claimed in claim 1; It is characterized in that said transformer body (101,102) is provided with bushing (1001,1002) and low-tension bushing (1101,1102); Said high pressure winding (601,602) is provided with high pressure tapping (701,702), and said low pressure winding (801,802) is provided with low pressure tapping (901,902).
3. a kind of three grades of loaded capacity-regulated distribution transformers as claimed in claim 1, it is characterized in that the secondary leading-out terminal of said load current instrument transformer (12), load current instrument transformer (12), the automatically controlled leading-out terminal of said high-pressure electric control switch (201,202,203,204,205,206), said low-pressure electric controlled switch (301,302,303,304,305,306) automatically controlled leading-out terminal and said loaded capacity-regulated switch (501,502) control end respectively with the electric connection of said loaded capacity-regulated control device (4).
4. a kind of three grades of loaded capacity-regulated distribution transformers as claimed in claim 1; It is characterized in that said three grades of loaded capacity-regulated distribution transformer high-pressure sides join with same high voltage source through high-pressure electric control switch (201,202,203,204,205,206) parallel connection back, low-pressure side is joined with load current instrument transformer (12) through low-pressure electric controlled switch (301,302,303,304,305,306) parallel connection back.
5. according to claim 1 or claim 2 a kind of three grades of loaded capacity-regulated distribution transformers; It is characterized in that said high-pressure electric control switch (201,202,203,204,205,206) is connected with said bushing (1001,1002), said low-pressure electric controlled switch (301,302,303,304,305,306) is connected with said low-tension bushing (1101,1102).
6. according to claim 1 or claim 2 a kind of three grades of loaded capacity-regulated distribution transformers is characterized in that said transformer body (101,102) is connected with said loaded capacity-regulated switch (501,502) with low pressure tapping (901,902) through high pressure tapping (701,702).
7. a kind of three grades of loaded capacity-regulated distribution transformers as claimed in claim 1 is characterized in that said high pressure winding (601,602) can realize star connection, Y connection or delta connection, and said low pressure winding (801,802) can be realized connect in parallel or connect in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201285575U CN202159568U (en) | 2011-04-27 | 2011-04-27 | Three-level on-load adjusting capacity distribution transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201285575U CN202159568U (en) | 2011-04-27 | 2011-04-27 | Three-level on-load adjusting capacity distribution transformer |
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| Publication Number | Publication Date |
|---|---|
| CN202159568U true CN202159568U (en) | 2012-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011201285575U Expired - Lifetime CN202159568U (en) | 2011-04-27 | 2011-04-27 | Three-level on-load adjusting capacity distribution transformer |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441438A (en) * | 2013-08-20 | 2013-12-11 | 北京电研华源电力技术有限公司 | On-load capacitance regulating box-type transformer substation |
| CN104252959A (en) * | 2014-09-18 | 2014-12-31 | 国家电网公司 | Energy-saving on-load capacity regulating transformer and intelligent high and low capacity switching method thereof |
| CN104269258A (en) * | 2014-09-16 | 2015-01-07 | 江西变电设备有限公司 | Intelligent on-load capacitance regulating transformer |
| CN108899183A (en) * | 2018-07-06 | 2018-11-27 | 云南电网有限责任公司丽江供电局 | A kind of loading capacitance-regulating distribution transformer and corresponding capacity transfer method |
-
2011
- 2011-04-27 CN CN2011201285575U patent/CN202159568U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441438A (en) * | 2013-08-20 | 2013-12-11 | 北京电研华源电力技术有限公司 | On-load capacitance regulating box-type transformer substation |
| CN104269258A (en) * | 2014-09-16 | 2015-01-07 | 江西变电设备有限公司 | Intelligent on-load capacitance regulating transformer |
| CN104252959A (en) * | 2014-09-18 | 2014-12-31 | 国家电网公司 | Energy-saving on-load capacity regulating transformer and intelligent high and low capacity switching method thereof |
| CN108899183A (en) * | 2018-07-06 | 2018-11-27 | 云南电网有限责任公司丽江供电局 | A kind of loading capacitance-regulating distribution transformer and corresponding capacity transfer method |
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Owner name: STATE GRID CORPORATION OF CHINA Free format text: FORMER OWNER: CHINA ELECTRIC POWER RESEARCH INSTITUTE Effective date: 20140321 Owner name: CHINA ELECTRIC POWER RESEARCH INSTITUTE Effective date: 20140321 |
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| C41 | Transfer of patent application or patent right or utility model | ||
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Free format text: CORRECT: ADDRESS; FROM: 100192 HAIDIAN, BEIJING TO: 100031 XICHENG, BEIJING |
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Effective date of registration: 20140321 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: China Electric Power Research Institute Address before: 100192 Beijing city Haidian District Qinghe small Camp Road No. 15 Patentee before: China Electric Power Research Institute |
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Granted publication date: 20120307 |