CN203607728U - Box type transformer substation - Google Patents
Box type transformer substation Download PDFInfo
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- CN203607728U CN203607728U CN201320453549.7U CN201320453549U CN203607728U CN 203607728 U CN203607728 U CN 203607728U CN 201320453549 U CN201320453549 U CN 201320453549U CN 203607728 U CN203607728 U CN 203607728U
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- 239000003990 capacitor Substances 0.000 claims description 34
- 230000001276 controlling effect Effects 0.000 claims description 12
- 238000009413 insulation Methods 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 241000283080 Proboscidea <mammal> Species 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 230000001681 protective Effects 0.000 claims description 3
- 230000001131 transforming Effects 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 241000283984 Rodentia Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 206010043431 Thinking abnormal Diseases 0.000 description 1
- 229910000808 amorphous metal alloy Inorganic materials 0.000 description 1
- 230000023298 conjugation with cellular fusion Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000021037 unidirectional conjugation Effects 0.000 description 1
Abstract
The utility model relates to the technical field of power transformation, in particular to a box type transformer substation, which comprises a box, a transformer, a high-voltage unit, a low-voltage unit and a capacitance compensation unit. The high-voltage side of the transformer is electrically connected with the high-voltage unit. The low-voltage side of the transformer is connected with the low-voltage unit, and is electrically connected with the capacitance compensation unit. The high-voltage unit, the low-voltage unit and the capacitance compensation unit are arranged in the box. The power factor of the transformer is increased by the capacitance compensation unit in the box type transformer substation, so that the proportional constant of the active power in a power grid is increased. Consequently, the loss of the box type transformer substation is greatly reduced, and the design capacities of the box type transformer substation and generating and power supply equipment are reduced. Moreover, the arrangement of the capacitance compensation unit in the box type transformer substation keeps the advantages of the box type transformer substation, such as small size and convenience in moving.
Description
Technical field
The utility model relates to power transformation technical field, relates in particular to a kind of box-type substation.
Background technology
So-called transformer station, be the equipment for changing voltage, for the power delivery that power plant is sent arrives place far away, voltage must be raise, become high-tension electricity, near user more on demand lower voltage, the work of this lifting voltage completes by transformer station, the capital equipment of transformer station is switch and transformer, according to scale difference, becomes transformer station, electric substation, switchgear house etc.
In electric power system, a large amount of loads is inductive, and therefore the load that absorbs lagging reactive power is called " load or burden without work " by we, and the equipment that absorbs capacitive reactive power is called to " reactive power source ".Reactive power compensation is exactly to absorb or the variable reactive power of moderate supply, to improve the power supply quality of AC electric power systems.Most of network element consume reactive power, most of loads also need consume reactive power.The needed reactive power of network element and load must obtain somewhere from network.Obviously, if these reactive powers all will be provided and are irrational through long-distance transmission by generator, be, also impossible conventionally.Reasonably method is to produce reactive power, reactive power compensation that Here it is in the place that needs consume reactive power.
Box-type substation is that the functions such as high powered, transformer pressure-reducing, low-voltage distribution are organically combined, be arranged on a protection against the tide, antirust, dustproof, protection against rodents, fire prevention, antitheft, heat insulation, totally-enclosed, movably in steel construction casing, it have volume small footprint size little, be convenient to the advantages such as installation, but also there is the shortcomings such as line loss height in it.
Utility model content
The purpose of this utility model is to propose the box-type substation that a kind of volume is little and loss is low.
For reaching this object, the utility model by the following technical solutions:
A kind of box-type substation, comprise: casing, transformer, high-tension apparatus, low-voltage equipment and capacitance compensation equipment, the high-pressure side of described transformer is electrically connected with high-tension apparatus, the low-pressure side of described transformer is connected with low-voltage equipment, the low-pressure side of described transformer is electrically connected with capacitance compensation equipment, wherein, high-tension apparatus, low-voltage equipment and capacitance compensation equipment are arranged in casing, on casing, be provided with change over switch, change over switch is divided into two gears: manual switching gear and automatic switching gear, described change over switch is for the conversion between capacitance compensation equipment manual switching and two kinds of switching modes of automatic switching.
Wherein, the low-pressure side of transformer is electrically connected and is specially with capacitance compensation equipment: the low-pressure side bus of capacitance compensation equipment and transformer is connected in parallel.
Further, capacitance compensation equipment comprises capacitor group and capacitor switching intelligent controlling device, wherein, in the time that described change over switch is positioned at automatic switching gear, capacitor switching intelligent controlling device carrys out the automatic switching of control capacitance compensation equipment according to the size of the real-time load or burden without work of transformer.
Further, capacitance compensation equipment also comprises electrical interlocks protective device, for when transformer or the capacitance compensation equipment fault, and the automatic excision of capacitance compensation equipment.
Wherein, be provided with insulation board in casing, described insulation board is arranged between high-tension apparatus and low-voltage equipment, for preventing that high-tension apparatus and low-voltage equipment from discharging mutually.
Wherein, transformer is positioned at casing, and transformer, high-tension apparatus, low-voltage equipment and capacitance compensation equipment are sphere of movements for the elephants type and arrange.
Wherein, transformer is positioned at outside casing, and high-tension apparatus, low-voltage equipment and capacitance compensation equipment are " product " font to be arranged, and wherein, high-tension apparatus and low-voltage equipment are near transformer, and capacitance compensation equipment is away from transformer.
Wherein, being also provided with support in casing, placing capacitance compensation equipment on described support, is low-voltage equipment below described support.
Wherein, capacitor switching intelligent controlling device comprises operating passing zero control function, high temperature alarm function and overheat protection function.
The beneficial effects of the utility model: a kind of box-type substation, comprise: casing, transformer, high-tension apparatus, low-voltage equipment and capacitance compensation equipment, the high-pressure side of described transformer is electrically connected with high-tension apparatus, the low-pressure side of described transformer is connected with low-voltage equipment, the low-pressure side of described transformer is electrically connected with capacitance compensation equipment, wherein, high-tension apparatus, low-voltage equipment and capacitance compensation equipment are arranged in casing, Electric capacity compensation device in the utility model has improved the power factor of transformer, increase the proportionality constant of active power in electrical network, box-type substation loss is reduced greatly, reduce box-type substation and sent out, the design capacity of power supply unit, and the arrangement mode of capacitance compensation equipment in the utility model has also kept box-type substation small volume, be convenient to the advantages such as mobile.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of box-type substation in the utility model embodiment mono-;
Fig. 2 is the utility model embodiment mono-capacitance compensation equipment and transformer connection diagram;
Fig. 3 is the structural representation of a kind of box-type substation in the utility model embodiment bis-.
Embodiment
Further illustrate the technical solution of the utility model below in conjunction with Fig. 1-Fig. 3 and by embodiment.
Embodiment mono-
Fig. 1 is the structural representation of a kind of box-type substation in the utility model embodiment mono-.
A kind of box-type substation, comprise: casing, transformer, high-tension apparatus, low-voltage equipment and capacitance compensation equipment, the high-pressure side of described transformer is electrically connected with high-tension apparatus, the low-pressure side of described transformer is connected with low-voltage equipment, the low-pressure side of described transformer is electrically connected with capacitance compensation equipment, wherein, high-tension apparatus, low-voltage equipment and capacitance compensation equipment are arranged in casing.
Most of power consumption equipments are all according to electromagnetic induction principle work, they rely on to set up alternating magnetic field and just can carry out conversion and the transmission of energy, be called reactive power for setting up alternating magnetic field and respond to magnetic flux the electrical power needing, in power triangle, the ratio of active power and apparent power is called power factor, in service at electrical network, power factor has reflected the degree that the apparent power of power supply output is used effectively, in the present embodiment, capacitance compensation equipment makes distribution system power factor as far as possible close to 1, make the reactive power in circuit can drop to minimum, thereby improve the power of power delivery, reach the object that reduces energy consumption.
In the present embodiment, there is following relation in power factor and line loss:
A=（P/UcosΦ）2Rt
A--------line loss electric weight in formula, kW.h;
P--------active power, kW;
U--------working voltage, kV;
R--------resistance, Ω;
Cos Φ-power factor;
The t---------time, h.
Visible, improve power factor and can reduce electric energy loss.In actual motion, improve the meritorious output that power factor can also improve Operating Voltage, increase generator, therefore, improving power factor is the important means of distribution system economical operation.
In the present embodiment, capacitance compensation equipment volume is smaller, can be arranged in casing, has kept box-type substation small volume, has been convenient to the advantages such as mobile.
In the present embodiment, capacitance compensation equipment difference corresponding to different electric pressures, adopts 1000V capacitor, 35kV/10kV box-type substation to adopt 15kV capacitor as 10kV/0.4kV box-type substation adopts 440V capacitor, 0.69kV/10kV box-type transformer substation for wind power generation.
In the present embodiment, the capacity of capacitance compensation equipment is the 20%-40% of box-type substation total load.
In the present embodiment, the low-pressure side of transformer is electrically connected and is specially with capacitance compensation equipment: the low-pressure side bus of capacitance compensation equipment and transformer is connected in parallel; In Fig. 2, the capacitor group Y-connection in capacitance compensation equipment, is connected with the low-pressure side bus of transformer by three capacitance switchs respectively.
As another kind of embodiment, the capacitor group in capacitance compensation equipment also can connect by triangle.
In the present embodiment, improve the service efficiency of transformer in order to reduce box-type substation loss, first select the transformer mating with load; Secondly, Transformer Selection amorphous alloy transformer wherein, to reduce the loss of transformer itself, improves transfer ratio; Finally, improve the operating temperature of box-type substation ventilated environment reduction box-type substation, improve the overall operation efficiency of box-type substation.
In the present embodiment, be provided with change over switch on casing, change over switch is divided into two gears: manual switching gear and automatic switching gear, and described change over switch is for the conversion between capacitance compensation equipment manual switching and two kinds of switching modes of automatic switching; When normal operation, change over switch is positioned at automatic switching gear, capacitance compensation equipment is dropped into and excision automatically by transformer station's capacitor switching control system control, in the time of maintenance debugging, patrol officer can rotate change over switch to manual switching gear at casing place, operation of capacitor switch carries out input and the excision of capacitor group at the scene, in order to prevent that people without fixed duties from waiting operation change over switch, can lock and the device such as protection network on change over switch.
Further, capacitance compensation equipment comprises capacitor group and capacitor switching intelligent controlling device, wherein, in the time that described change over switch is positioned at automatic switching gear, capacitor switching intelligent controlling device carrys out the automatic switching of control capacitor compensation equipment according to the size of the real-time load or burden without work of transformer; Capacitor switching intelligent controlling device is connected with transformer station capacitor switching control system, input and the excision of the main point incompatible control capacitor group by control capacitance switch, in the present embodiment, capacitors count in capacitor group is 3, capacitor switching intelligent controlling device is provided with first threshold, in the time that the real-time load or burden without work of transformer is greater than threshold value, capacitor switching intelligent controlling device notice transformer station capacitor switching control system is sent instruction closes a floodgate capacitance switch, drop into resistor group, capacitance compensation equipment carries out reactive power compensation to transformer station; In the time that the real-time load or burden without work of transformer is less than threshold value, capacitor switching intelligent controlling device notice transformer station capacitor switching control system is sent instruction makes capacitance switch separating brake, excision resistor group, has avoided like this in light hours overcompensation, send the idle power loss that causes to increase.
As another kind of embodiment, the capacitors count in capacitor group can change according to the capacity of transformer.
Further, capacitance compensation equipment also comprises electrical interlocks protective device, for when transformer or the capacitance compensation equipment fault, and the automatic excision of capacitance compensation equipment; In the present embodiment, in the time of the high-voltage wire inlet switch tripping operation of transformer or separating brake, the capacitance switch interlock separating brake of capacitance compensation equipment; In the time having a capacitance switch fault trip, other capacitance switch interlock separating brakes.
In the present embodiment, be provided with insulation board in casing, described insulation board is arranged between high-tension apparatus and low-voltage equipment, for preventing that high-tension apparatus and low-voltage equipment from discharging mutually.
In the present embodiment, as shown in Figure 1, transformer is positioned at casing, transformer, high-tension apparatus, low-voltage equipment and capacitance compensation equipment are sphere of movements for the elephants type and arrange, the present embodiment is mainly applicable to American casing transformer station, this compact arrangement mode can make the small volume of box-type substation, arrange with " order " font of low-voltage equipment with the transformer of prior art, high-tension apparatus or compared with " product " font arranges, volume is more or less the same, the advantage such as kept the volume of box-type substation little, to be convenient to install, mobile, and larger reduction loss.
In the present embodiment, in casing, be also provided with support, on described support, place capacitance compensation equipment, it below described support, is low-voltage equipment, in the time that the low-voltage equipment height in casing is less than box height, can rely on this support by capacitance compensation equipment be placed on low-voltage equipment directly over, the width that so can save casing is to guarantee the little advantage of box-type substation volume.
As another kind of embodiment, in order to reduce the volume of box-type substation, can also adopt half buried box type transformer substation; Or adopt compact box transformer station, cancel high-voltage board, low-voltage cabinet, capacitor box cabinet, select the transformer with high voltage load switch, utilize the dividing plate between box-type substation compartment that low-voltage component and capacitor are installed.
In the present embodiment, capacitor switching intelligent controlling device comprises operating passing zero control function, high temperature alarm function and overheat protection function.
Embodiment bis-
In the present embodiment, as shown in Figure 3, transformer is positioned at outside casing, and high-tension apparatus, low-voltage equipment and capacitance compensation equipment are " product " font to be arranged, and wherein, high-tension apparatus and low-voltage equipment are near transformer, and capacitance compensation equipment is away from transformer; The present embodiment is mainly applicable to European casing transformer station, and compared with American casing transformer station, European casing transformer station volume is larger, for increase capacitance compensation equipment in casing, little on the volume impact of European casing transformer station.
The foregoing is only embodiment of the present utility model, these are described is in order to explain principle of the present utility model, and can not be take any interpretation of structure as the restriction to the utility model protection range.Based on explanation herein, those skilled in the art does not need to pay performing creative labour can associate other concrete structure of implementing of the present utility model, within these structures all will fall into protection range of the present utility model.
Claims (8)
1. a box-type substation, it is characterized in that, comprise: casing, transformer, high-tension apparatus, low-voltage equipment and capacitance compensation equipment, the high-pressure side of described transformer is electrically connected with high-tension apparatus, the low-pressure side of described transformer is connected with low-voltage equipment, the low-pressure side of described transformer is electrically connected with capacitance compensation equipment, wherein, high-tension apparatus, low-voltage equipment and capacitance compensation equipment are arranged in casing, on described casing, be provided with change over switch, change over switch is divided into two gears: manual switching gear and automatic switching gear, described change over switch is for the conversion between capacitance compensation equipment manual switching and two kinds of switching modes of automatic switching.
2. a kind of box-type substation according to claim 1, is characterized in that, the low-pressure side of described transformer is electrically connected and is specially with capacitance compensation equipment: the low-pressure side bus of capacitance compensation equipment and transformer is connected in parallel.
3. a kind of box-type substation according to claim 1, it is characterized in that, described capacitance compensation equipment comprises capacitor group and capacitor switching intelligent controlling device, wherein, in the time that described change over switch is positioned at automatic switching gear, capacitor switching intelligent controlling device carrys out the automatic switching of control capacitance compensation equipment according to the size of the real-time load or burden without work of transformer.
4. a kind of box-type substation according to claim 3, is characterized in that, described capacitance compensation equipment also comprises electrical interlocks protective device, for when transformer or the capacitance compensation equipment fault, and the automatic excision of capacitance compensation equipment.
5. a kind of box-type substation according to claim 1, is characterized in that, in described casing, is provided with insulation board, and described insulation board is arranged between high-tension apparatus and low-voltage equipment, for preventing that high-tension apparatus and low-voltage equipment from discharging mutually.
6. a kind of box-type substation according to claim 1, is characterized in that, described transformer is positioned at casing, and transformer, high-tension apparatus, low-voltage equipment and capacitance compensation equipment are sphere of movements for the elephants type and arrange.
7. a kind of box-type substation according to claim 1, is characterized in that, described transformer is positioned at outside casing, high-tension apparatus, low-voltage equipment and capacitance compensation equipment are " product " font and arrange, wherein, high-tension apparatus and low-voltage equipment are near transformer, and capacitance compensation equipment is away from transformer.
8. a kind of box-type substation according to claim 1, is characterized in that, is also provided with support in described casing, places capacitance compensation equipment on described support, is low-voltage equipment below described support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320453549.7U CN203607728U (en) | 2013-07-26 | 2013-07-26 | Box type transformer substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320453549.7U CN203607728U (en) | 2013-07-26 | 2013-07-26 | Box type transformer substation |
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| Publication Number | Publication Date |
|---|---|
| CN203607728U true CN203607728U (en) | 2014-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320453549.7U Expired - Fee Related CN203607728U (en) | 2013-07-26 | 2013-07-26 | Box type transformer substation |
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| CN (1) | CN203607728U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103401167A (en) * | 2013-07-26 | 2013-11-20 | 泰豪科技(深圳)电力技术有限公司 | Box type transformer substation |
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2013
- 2013-07-26 CN CN201320453549.7U patent/CN203607728U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103401167A (en) * | 2013-07-26 | 2013-11-20 | 泰豪科技(深圳)电力技术有限公司 | Box type transformer substation |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140521 Termination date: 20190726 |