CN201170985Y - Combination switch for on-load capacity-regulating distributing transformer and distributing transformer thereof - Google Patents

Combination switch for on-load capacity-regulating distributing transformer and distributing transformer thereof Download PDF

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Publication number
CN201170985Y
CN201170985Y CNU2008200784907U CN200820078490U CN201170985Y CN 201170985 Y CN201170985 Y CN 201170985Y CN U2008200784907 U CNU2008200784907 U CN U2008200784907U CN 200820078490 U CN200820078490 U CN 200820078490U CN 201170985 Y CN201170985 Y CN 201170985Y
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CN
China
Prior art keywords
switch
distribution transformer
transformer
parallel
combination
Prior art date
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CNU2008200784907U
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Chinese (zh)
Inventor
王金丽
盛万兴
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北京电研华源电力技术有限公司
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Priority to CNU2008200784907U priority Critical patent/CN201170985Y/en
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Publication of CN201170985Y publication Critical patent/CN201170985Y/en

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Abstract

The utility model provides a combination switch of an on-load voltage regulation substation transformator and a substation transformator thereof. The combination switch comprises a mechanical switch and an electronic switch. The mechanical switch is provided with an input end, an output end and a control end. The electronic switch is provided with the input end, the output end and the control end, wherein, the input end of the mechanical switch and the input end of the electronic switch are connected to form the input end of the combination switch; the output end of the mechanical switch and the output end of the electronic switch are connected to form the output end of the combination switch; the input end and the output end of the combination switch are connected with an internal winding of the substation transformator; the mechanical switch and the electronic switch are switched on and off to be used for changing the structure of the internal winding of the substation transformator and regulate the operating capacity of the substation transformator. The substation transformator of the utility model uses a combination switch type on-load voltage regulation switch for the on-load voltage regulation of a transformer, does not have any impact and electric arc during the regulating process, has low waste and long life and can realize the reliable and economical operation of equipment and the energy-saving of the substation transformator.

Description

A kind of combination switch of loaded capacity-regulated distribution transformer and distribution transformer thereof

Technical field

The utility model particularly relevant for the capacity transfer switch in the capacitance-adjustable transformer, is a kind of combination switch and distribution transformer thereof of loaded capacity-regulated distribution transformer relevant for the capacitance-adjustable transformer technical field specifically.

Background technology

At present, the 10kV low capacity does not have load capacitance-adjustable transformer production technology comparative maturity, and generally having a power failure when changing according to the season does not have excitation change transformer capacity operational mode.

But the prospect of not having load capacitance-adjustable transformer is also pessimistic, because concrete user's awareness of saving energy is thin, only require energy usefulness, do not have the notion that reduces the wastage, transformer capacity transfer function is being not fully utilized in concrete the use, the management imperfection, regulate untimelyly, load and also do not carry out capacity regulating when big, cause frequent generation capacitance-adjustable transformer burnout failure, not only can not give full play to the intrinsic wastage reducing and energy saving function of capacitance-adjustable transformer, but also cause negative effect.

And the design of traditional loaded capacity-regulated transformer is what to be finished by loaded capacity-regulated switch of mechanical type and relevant electrical components, when switching, capacity transfer switch on-load produces bigger electric arc, the ablation contact causes greasy dirt to dye easily, influence the insulation characterisitic and the useful life of transformer, maintenance workload is big, has restricted the performance of the loaded capacity-regulated effect of transformer.

At this, quote the content of Chinese patent Granted publication CN2859764Y " big the loaded capacity-regulated power transformer of capacity " and content that Chinese patent notification number CN2109622U " has and carries an automatic capacitance-adjustable transformer " as prior art of the present utility model.

The utility model content

In view of the problem that exists in the middle of the above-mentioned prior art, the utility model provides a kind of combination switch and distribution transformer thereof of loaded capacity-regulated distribution transformer.

The purpose of this utility model is, a kind of combination switch of distribution transformer is provided, to solve quick, the no arc capacity transfer of distribution transformer.

Another purpose of the present utility model is, a kind of distribution transformer is provided, to realize reliable, the economical operation of distribution transformer.

An embodiment of the present utility model provides a kind of combination switch of distribution transformer, and described combination switch comprises: mechanical switch and electronic switch; Described mechanical switch has input, output and control end; Described electronic switch has input, output and control end; Wherein, the input of the input of described mechanical switch and the described electronic switch output that connects and composes the output of the input of described combination switch, described mechanical switch and described electronic switch connects and composes the output of described combination switch; The input of described combination switch is connected with the Inside coil of described distribution transformer with output, and the folding of described mechanical switch and electronic switch is used to change the structure of the Inside coil of described distribution transformer, adjusts the working capacity of described distribution transformer.

Another embodiment of the present utility model provides a kind of distribution transformer, it is characterized in that, described distribution transformer comprises: the transformer body, and it comprises high-tension coil and low-voltage coil; Detecting unit, itself and described transformer body are coupled, and calculate in real time and the load of monitoring in the described transformer body; The capacity transfer control unit, itself and described detecting unit are coupled, and monitor the result that described distribution transformer is loaded according to described detecting unit, send the control signal of the capacity of adjusting described distribution transformer; Apparatus for adjusting capacity, it is connected with low-voltage coil with described high-tension coil, receives described control signal, changes the structure of described high-tension coil and low-voltage coil according to described control signal, to regulate the working capacity of distribution transformer.

It is loaded capacity-regulated that distribution transformer of the present utility model adopts the loaded capacity-regulated switch of composite switch type to carry out transformer, and its adjustment process does not have impact, no electric arc, loss is low, the life-span is long, can realize equipment reliably, economical operation, realization distribution transformer energy-conservation.

Description of drawings

Shown in Figure 1A is the structured flowchart of the loaded capacity-regulated distribution transformer of quick no arc of a preferred embodiment of the present utility model.

Shown in Figure 1B is the schematic diagram of the loaded capacity-regulated distribution transformer of quick no arc of a preferred embodiment of the present utility model.

Shown in Figure 2 is the inner high-voltage coil and low-voltage coil structure chart of transformer of the loaded capacity-regulated distribution transformer of quick no arc of a preferred embodiment of the present utility model.

Shown in Fig. 3 A be the big capacity of the loaded capacity-regulated distribution transformer of quick no arc of a preferred embodiment of the present utility model the time the schematic diagram of coil windings.

Shown in Fig. 3 B be the low capacity of the loaded capacity-regulated distribution transformer of quick no arc of a preferred embodiment of the present utility model the time the schematic diagram of coil windings.

Shown in Figure 4 is the schematic diagram of the capacity transfer switch of a preferred embodiment of the present utility model.

Shown in Fig. 5 A is the schematic diagram of high pressure combination switch of the capacity transfer switch of a preferred embodiment of the present utility model.

Shown in Fig. 5 B is the schematic diagram of low pressure combination switch of the capacity transfer switch of a preferred embodiment of the present utility model.

Shown in Fig. 6 A is the A phase voltage output waveform figure of the novel capacitance-adjustable transformer of this use.

Shown in Fig. 6 B is the B phase voltage output waveform figure of the novel capacitance-adjustable transformer of this use.

Shown in Fig. 6 C is the C phase voltage output waveform figure of the novel capacitance-adjustable transformer of this use.

Embodiment

For making the purpose of this utility model, technical scheme and advantage clearer,, the utility model is described in further details below in conjunction with embodiment and accompanying drawing.At this, exemplary embodiment of the present utility model and explanation thereof only are used to explain the utility model, but not as to qualification of the present utility model.

The utility model embodiment provides a kind of quick no arc loaded capacity-regulated distribution transformer.Below in conjunction with accompanying drawing the utility model is elaborated.

Shown in Figure 1A is shown in the structured flowchart, Figure 1B of the loaded capacity-regulated distribution transformer of quick no arc of a preferred embodiment of the present utility model to be the schematic diagram of the loaded capacity-regulated distribution transformer of quick no arc of a preferred embodiment of the present utility model, wherein the loaded capacity-regulated distribution transformer of quick no arc of present embodiment comprises: transformer body 101, and it comprises high-tension coil and low-voltage coil (not shown); Detecting unit 102 is used to detect high pressure three-phase voltage, high pressure three-phase current, the low pressure three-phase voltage of transformer body 101, calculates the load with the monitoring transformer in real time; Capacity transfer control unit 103, it sends the control signal of control transformer capacity transfer according to the result of detecting unit 102 monitoring transformer loads; Capacity transfer switch element 104, it receives this control signal, regulates the running status of transformer according to this control signal.

Promptly, shown in Figure 1B, detecting unit 102 obtains transformer low voltage CT electric current, low-voltage bus bar voltage, detect the high pressure three-phase voltage, the high pressure three-phase current, the low pressure three-phase voltage, calculate in real time and the monitoring transformer load, in case transformer load surpasses the corresponding time less than set point, capacity transfer control unit 103 control capacity transfer switch element 104 automatically switches to the underrun state with transformer, surpass the regular hour in case detect transformer load greater than set point, capacity transfer control unit 103 control capacity transfer switch element 104 automatically switches to the heavy-duty service state with transformer.The process of switching is that former secondary is disconnected, and switches to another kind of state after the 40ms at interval.Because it is harmless that the characteristic of combination switch no-flashy-flow, no arc, whole process can be accomplished transformer and switch, and electric power netting safe running is had no adverse effects.

Shown in Figure 2 is the inner high-voltage coil and low-voltage coil structure chart of transformer of the loaded capacity-regulated distribution transformer of quick no arc of a preferred embodiment of the present utility model; Shown in Fig. 3 A be the big capacity of the loaded capacity-regulated distribution transformer of quick no arc of a preferred embodiment of the present utility model the time the schematic diagram, Fig. 3 B of coil windings shown in be the low capacity of the loaded capacity-regulated distribution transformer of quick no arc of a preferred embodiment of the present utility model the time the schematic diagram of coil windings.

Wherein, in 6 combination switches of the high-tension coil in the transformer body 101 (machinery and electronic power switch combination), extract 9 contacts and capacity transfer switch element 104 out and carry out interface; Low-voltage coil needs 9 combination switches, extracts 12 contacts and loaded capacity-regulated switch altogether out and carries out interface.Loaded capacity-regulated transformer three-phase high-voltage winding is connected into triangle (D) (as shown in Figure 3A) when big capacity, be connected into star (Y) (shown in Fig. 3 B) during low capacity.Every phase low pressure winding minority wire turn part (I section), most wire turn line segments are by two groups of leads and around forming two parts (II, III section).II, the parallel connection of III section are connected with the I section again during big capacity, and I, II, III section are all connected during low capacity.When being adjusted to low capacity by big capacity, the low pressure umber of turn increases, and the high pressure winding becomes the Y connection simultaneously, and phase voltage reduces, and the multiple that the number of turn increases and voltage reduces is suitable, can guarantee that output voltage is constant.

Shown in Figure 4 is the schematic diagram of the capacity transfer switch of a preferred embodiment of the present utility model.Wherein, g1～g9, d1～d12 distinguishes contact g1～g9, the d1～d12 in the combination switch corresponding shown in Figure 2.Shown in Fig. 5 A is shown in the schematic diagram, Fig. 5 B of high pressure combination switch of capacity transfer switch of a preferred embodiment of the present utility model to be the schematic diagram of low pressure combination switch of the capacity transfer switch of a preferred embodiment of the present utility model.

Wherein, the type selecting of high pressure combination switch is as follows:

Sequence number The name of an article Specification Quantity ??1 Controllable silicon ??1600V/160A ??150 ??2 Capacitance-resistance absorbs ??1600V/0.47uf ??150 ??3 Driver ??150 ??4 Auxiliary ??3 ??5 High-pressure vacuum switch ??JCZ5-12/200A ??2

And the type selecting of low pressure combination switch is as follows:

Sequence number The name of an article Specification Quantity ??1 Controllable silicon ??1200V/600A ??9 ??2 Capacitance-resistance absorbs ??1000V/2.2uf ??9 ??3 Driver ??9 ??4 Vacuum contactor ??CKJ5-600A/1.14kV ??CKJ5-400A/1.14kV ??3 ??5 Auxiliary ??3

Aforesaid high and low pressure of the present utility model all adopts combination switch, utilizes no arc, nothing impact, the quick switching characteristic of electronic power switch to carry out big or small capacity regulating.Because the loss of electronic switch own is big, the overcurrent-overvoltage ability is used mechanical switch when normally moving, and overload capacity is strong, and loss is low.Therefore the utility model is by the in addition combination of electronic switch and mechanical switch advantage separately, and being implemented in does not have arc, no-flashy-flow in the switching process, lossless in course of normal operation, and switch performance is more satisfactory.

Below, in conjunction with Fig. 4 loaded capacity-regulated switching sequence of the present utility model is described.

For convenience of explanation, with k HnExpression high pressure winding mechanical switch is with k EnExpression high pressure winding electronic switch is with k LnExpression low pressure winding mechanical switch is with k DnExpression low pressure winding electronic switch (wherein, following target n represents sequence number).Switch control time sequence such as following table:

Shown in Fig. 6 A is shown in the A phase voltage output waveform figure, Fig. 6 B of the novel capacitance-adjustable transformer of this use to be shown in the B phase voltage output waveform figure, Fig. 6 C of the novel capacitance-adjustable transformer of this use to be the C phase voltage output waveform figure of the novel capacitance-adjustable transformer of this use.

Capacitance-adjustable transformer of the present utility model is judged current payload by voltage, the electric current of monitoring transformer high-voltage side, according to the capacity setting value and judge the related constraint condition, satisfying imposes a condition then sends corresponding adjusting control command to the capacity transfer switch, the capacity transfer switch is according to the reliable opening and closing movement of control command, finish star, angular transformation and the series and parallel conversion of the inner high and low pressure coil of transformer, under the state that does not need to have a power failure, finish the transformer capacity adjustment process, loaded capacity-regulated transformer is moved with economized form under the situation that satisfies workload demand all the time.

It is loaded capacity-regulated that distribution transformer of the present utility model adopts the loaded capacity-regulated switch of composite switch type to carry out transformer, and adjustment process does not have impact, no electric arc, loss is low, the life-span is long, can realize equipment reliably, economical operation, be the feasible method of realization transformer energy saving.

Above-described embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above only is the specific embodiment of the present invention; and be not intended to limit the scope of the invention; within the spirit and principles in the present invention all, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (9)

1. the combination switch of a distribution transformer is characterized in that, described combination switch comprises: mechanical switch and electronic switch;
Described mechanical switch has input, output and control end;
Described electronic switch has input, output and control end;
Wherein, the input of the input of described mechanical switch and the described electronic switch output that connects and composes the output of the input of described combination switch, described mechanical switch and described electronic switch connects and composes the output of described combination switch;
The input of described combination switch is connected with the Inside coil of described distribution transformer with output, and the folding of described mechanical switch and electronic switch is used to change the structure of the Inside coil of described distribution transformer, adjusts the working capacity of described distribution transformer.
2. the combination switch of distribution transformer according to claim 1 is characterized in that,
Described combination switch is connected in parallel by high-pressure vacuum switch and electronic switch and forms, and this electronic switch is connected in series by a plurality of parallel circuitss and forms, and described parallel circuits is connected in parallel by thyristor and capacitance-resistance absorber element and forms.
3. the combination switch of distribution transformer according to claim 2 is characterized in that, described electronic switch is composed in series by 150 described parallel circuitss.
4. the combination switch of distribution transformer according to claim 1 is characterized in that,
Described combination switch is connected in parallel by vacuum contactor and electronic switch and forms, and this electronic switch is connected in series by a plurality of parallel circuitss and forms, and described parallel circuits is connected in parallel by thyristor and capacitance-resistance absorber element and forms.
5. the combination switch of distribution transformer according to claim 4 is characterized in that, described electronic switch is composed in series by 9 described parallel circuitss.
6. a distribution transformer is characterized in that, described distribution transformer comprises:
The transformer body, it comprises high-tension coil and low-voltage coil;
Detecting unit, itself and described transformer body are coupled, and calculate in real time and the load of monitoring in the described transformer body;
The capacity transfer control unit, itself and described detecting unit are coupled, and monitor the result that described distribution transformer is loaded according to described detecting unit, send the control signal of the capacity of adjusting described distribution transformer;
Apparatus for adjusting capacity, it is connected with low-voltage coil with described high-tension coil, receives described control signal, changes the structure of described high-tension coil and low-voltage coil according to described control signal, to regulate the working capacity of distribution transformer.
7. distribution transformer according to claim 6 is characterized in that,
Described apparatus for adjusting capacity comprises a plurality of high pressure combination switches and a plurality of low pressure combination switch, and this high pressure combination switch and low pressure combination switch are connected to the high-tension coil and the low-voltage coil of described distribution transformer,
Described high pressure combination switch and low pressure combination switch are made up of mechanical switch and electronic switch respectively, and the structure of described high-tension coil and low-voltage coil is adjusted in the folding of described mechanical switch and electronic switch, change the working capacity of described distribution transformer.
8. distribution transformer according to claim 7 is characterized in that,
Described high pressure combination switch is connected in parallel by high-pressure vacuum switch and electronic switch and forms, and this electronic switch is connected in series by a plurality of parallel circuitss and forms, and described parallel circuits is connected in parallel by thyristor and capacitance-resistance absorber element and forms.
9. distribution transformer according to claim 7 is characterized in that,
Described low pressure combination switch is connected in parallel by vacuum contactor and electronic switch and forms, and this electronic switch is connected in series by a plurality of parallel circuitss and forms, and described parallel circuits is connected in parallel by thyristor and capacitance-resistance absorber element and forms.
CNU2008200784907U 2008-01-10 2008-01-10 Combination switch for on-load capacity-regulating distributing transformer and distributing transformer thereof CN201170985Y (en)

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Application Number Priority Date Filing Date Title
CNU2008200784907U CN201170985Y (en) 2008-01-10 2008-01-10 Combination switch for on-load capacity-regulating distributing transformer and distributing transformer thereof

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101923952A (en) * 2010-08-27 2010-12-22 天津市电力公司 Energy-saving control method for on-load capacitance-adjusting transformer
CN102013307A (en) * 2010-06-02 2011-04-13 李晓慧 On-load capacity-regulation distributing transformer
CN102651273A (en) * 2012-04-09 2012-08-29 中国电力科学研究院 Arcless on-load volume regulation and voltage regulation distribution transformer
CN102693821A (en) * 2012-06-20 2012-09-26 江苏互邦变压器制造有限公司 Intelligent on-load dry type capacitance-adjusting transformer
CN102709036A (en) * 2012-03-31 2012-10-03 北京博瑞莱智能科技有限公司 Automatic capacity regulating distribution transformer and capacity regulating method thereof
CN102930964A (en) * 2012-10-12 2013-02-13 沈阳昊诚电气股份有限公司 Three-phase on-load capacitance-tuning transformer
CN104272405A (en) * 2012-05-10 2015-01-07 西门子公司 Secondary distribution network transformer
CN104616872A (en) * 2015-02-11 2015-05-13 国网上海市电力公司 On-load capacitance adjustment transformer
CN105118628A (en) * 2015-09-23 2015-12-02 常州机电职业技术学院 Low-voltage welding transformer and operation method thereof
CN106158307A (en) * 2015-04-01 2016-11-23 贵州聚龙达科技有限公司 A kind of controlled capacity transfer distribution 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

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102013307A (en) * 2010-06-02 2011-04-13 李晓慧 On-load capacity-regulation distributing transformer
CN101923952A (en) * 2010-08-27 2010-12-22 天津市电力公司 Energy-saving control method for on-load capacitance-adjusting transformer
CN101923952B (en) * 2010-08-27 2015-06-03 天津市电力公司 Energy-saving control method for on-load capacitance-adjusting transformer
CN102709036A (en) * 2012-03-31 2012-10-03 北京博瑞莱智能科技有限公司 Automatic capacity regulating distribution transformer and capacity regulating method thereof
CN102709036B (en) * 2012-03-31 2015-05-20 北京博瑞莱智能科技集团有限公司 Automatic capacity regulating distribution transformer and capacity regulating method thereof
CN102651273A (en) * 2012-04-09 2012-08-29 中国电力科学研究院 Arcless on-load volume regulation and voltage regulation distribution transformer
CN102651273B (en) * 2012-04-09 2015-04-01 中国电力科学研究院 Arcless on-load volume regulation and voltage regulation distribution transformer
CN104272405A (en) * 2012-05-10 2015-01-07 西门子公司 Secondary distribution network transformer
CN102693821A (en) * 2012-06-20 2012-09-26 江苏互邦变压器制造有限公司 Intelligent on-load dry type capacitance-adjusting transformer
CN102930964A (en) * 2012-10-12 2013-02-13 沈阳昊诚电气股份有限公司 Three-phase on-load capacitance-tuning transformer
CN102930964B (en) * 2012-10-12 2015-08-05 沈阳昊诚电气股份有限公司 A kind of three-phase loaded capacity-regulated transformer
CN104616872A (en) * 2015-02-11 2015-05-13 国网上海市电力公司 On-load capacitance adjustment transformer
CN106158307A (en) * 2015-04-01 2016-11-23 贵州聚龙达科技有限公司 A kind of controlled capacity transfer distribution transformer
CN105118628A (en) * 2015-09-23 2015-12-02 常州机电职业技术学院 Low-voltage welding transformer and operation 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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Effective date of registration: 20121129

Address after: 100192 Beijing City, Haidian District Road No. 15 building, Huayuan Qinghe small camp

Patentee after: Dianyan Huayuan Power Tech. Co., Ltd., Beijing

Patentee after: State Grid Corporation of China

Address before: 100085 Beijing city Haidian District Qinghe small Camp Road No. 15

Patentee before: Dianyan Huayuan Power Tech. Co., Ltd., Beijing

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