CN109066825A - 220kV transmission line insulator lightning conducter based on Switching Power Supply takes can method - Google Patents
220kV transmission line insulator lightning conducter based on Switching Power Supply takes can method Download PDFInfo
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- CN109066825A CN109066825A CN201811106221.1A CN201811106221A CN109066825A CN 109066825 A CN109066825 A CN 109066825A CN 201811106221 A CN201811106221 A CN 201811106221A CN 109066825 A CN109066825 A CN 109066825A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000012212 insulator Substances 0.000 title claims abstract description 8
- 230000009466 transformation Effects 0.000 claims abstract description 24
- 238000009413 insulation Methods 0.000 claims abstract description 13
- 230000005611 electricity Effects 0.000 claims description 7
- 239000003990 capacitor Substances 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000006698 induction Effects 0.000 claims description 3
- 238000012806 monitoring device Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
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- H02J5/005—
Abstract
The present invention relates to a kind of, and the 220kV transmission line insulator lightning conducter based on Switching Power Supply takes energy method.It is provided with voltage transformation module and load blocks, the high-pressure side for converting the voltage into module directly passes through cable and connect with insulation lightning conducter, and flanks the load blocks based on Switching Power Supply in the low pressure of voltage transformation module, for providing stable voltage to different loads.The present invention takes energy mode compared to other, there is the features such as cost is small, device is stable, takes energy power big.
Description
Technical field
The invention belongs to intelligent power grid technology field, it is related to a kind of 220kV transmission line insulator based on Switching Power Supply and keeps away
Thunder line takes can method.
Background technique
China's power grid has the characteristics that wide coverage, transmission line of electricity distance.Ultra-high-tension power transmission line is as entire electric power
The artery of transport net, operating status determine the safety of entire electric system, stability, once breaking down will draw
Hair, which completely has a power failure, even causes regional power grid off-the-line, not only directly affects power grid power supply reliability, also will cause great economy damage
It loses.Power transmission and transformation line is chronically exposed in natural environment complicated and changeable, changeable climate condition (sleet and snow ice, wind etc.),
Safety and stability of the uncertain factors such as reason factor (earthquake, landslide etc.) and artificial damage (theft, bad) to power transmission and transformation system
Operation generates tremendous influence.Therefore real time on-line monitoring and related early warning are carried out in turn to the operating status of ultra-high-tension power transmission line
Guarantee that its safe operation just becomes particularly significant.
These characteristics based on transmission line of electricity, the transmission line of electricity severe for location weather conditions, geographic factor is complicated,
It more needs to carry out real-time running state monitoring to it.However power transmission line corridor is often in remote districts, lacks for prison
Survey the low-voltage power supply that device uses.
Condition in face of lacking low-tension supply limits, and transmission line of electricity monitoring device should have independent power supply, can be with
Consider that collecting energy is powered from ambient enviroment.It is presently available for the environmental energy of on-line monitoring device for transmission line energy supply
Mainly there are solar energy, wind energy, electromagnetic energy etc..
On-line monitoring device for transmission line overwhelming majority in China's passes through photovoltaic battery panel using solar powered at present
Luminous energy is changed into electric energy.But according to the principle and feature of supplying power for photovoltaic cell, solar energy acquisition mode power its output vulnerable to
The influence of the factors such as intensity of illumination, environment temperature.To obtain, stable power supply is exported and equipment can be under extreme weather conditions
It works normally, photovoltaic cell must constitute combined power supply system with battery.In order to guarantee that on-line monitoring equipment can be used for a long time
It works normally, a large amount of maintenance work, replace the battery of reduced performance in time.In addition solar panel after longtime running
Easy cleaning, the transfer efficiency that can weaken solar battery do not reduce the dust of upper accumulation.
It is at high cost to set up Special low-voltage line, is difficult to realize in remote districts, is not suitable for promoting；Laser powered sensor is a kind of new
Power supply mode can be powered with firm power, but its is with high costs, and the service life is short, not be a kind of ideal method of supplying power to.Therefore exist
How to guarantee to become on-Line Monitor Device normal power supply in such situation and restricts on-line monitoring device for transmission line development
Technical bottleneck.
Summary of the invention
The purpose of the present invention is to provide a kind of, and the 220kV transmission line insulator lightning conducter based on Switching Power Supply takes energy side
Method, this method have the characteristics that cost is small, device is stable using device, take energy power big.
To achieve the above object, the technical scheme is that a kind of 220kV transmission line insulator based on Switching Power Supply
Lightning conducter takes energy method, is provided with voltage transformation module and the load blocks based on Switching Power Supply, the voltage transformation module
High-pressure side directly passes through cable and connect with insulation lightning conducter, and the low-pressure side of voltage transformation module is connect with load blocks；This takes energy
Method is accomplished by
Firstly, there is following formula
In formula: VgFor the lightning conducter induced voltage that insulate；V is the voltage under transmission line of electricity operating condition；C1For insulation lightning conducter with lead
Capacitor between line；C2For the capacitor between insulation lightning conducter and the earth；
Based on electrostatic induction size, if voltage transformation module rated primary voltage is U1, wherein U1It is expressed as
U1=k1Vg
In formula: k1Refer to primary voltage proportionality coefficient；
Secondary side is simultaneously in order to cooperate the input voltage requirement of common load, if voltage transformation module secondary side output voltage
For U2, it is shown below:
U2=k2U1
In formula: k2Refer to secondary voltage proportionality coefficient；
Voltage transformation module capacity determines by required load, and there are certain nargin, therefore voltage transformation module capacity S
Select formula as follows:
S=k3U2I2
In formula: k3Refer to load blocks capacity ratio coefficient, I2Refer to load blocks output-current rating.
Compared to the prior art, the invention has the following advantages: the method for the present invention is had using device, cost is small, fills
Set it is stable, take can power it is big the features such as.
Detailed description of the invention
Fig. 1 is principle schematic diagram of the present invention.
Specific embodiment
With reference to the accompanying drawing, technical solution of the present invention is specifically described.
The present invention provides a kind of, and the 220kV transmission line insulator lightning conducter based on Switching Power Supply takes energy method, is provided with
Voltage transformation module and load blocks based on Switching Power Supply, the high-pressure side of the voltage transformation module directly pass through cable and absolutely
The connection of edge lightning conducter, the low-pressure side of voltage transformation module are connect with load blocks；This takes energy method to be accomplished by
Firstly, there is following formula
In formula: VgFor the lightning conducter induced voltage that insulate；V is the voltage under transmission line of electricity operating condition；C1For insulation lightning conducter with lead
Capacitor between line；C2For the capacitor between insulation lightning conducter and the earth；
Based on electrostatic induction size, if voltage transformation module rated primary voltage is U1, wherein U1It is expressed as
U1=k1Vg
In formula: k1Refer to primary voltage proportionality coefficient；
Secondary side is simultaneously in order to cooperate the input voltage requirement of common load, if voltage transformation module secondary side output voltage
For U2, it is shown below:
U2=k2U1
In formula: k2Refer to secondary voltage proportionality coefficient；
Voltage transformation module capacity determines by required load, and there are certain nargin, therefore voltage transformation module capacity S
Select formula as follows:
S=k3U2I2
In formula: k3Refer to load blocks capacity ratio coefficient, I2Refer to load blocks output-current rating.
The following are specific implementation examples of the invention.
Fig. 1 is the principle of the present invention schematic diagram.As shown in Figure 1, a kind of 220kV overhead transmission line insulation of the invention is kept away
Thunder line energy taking device.It is characterized by: in insulation lightning conducter by connecting 10kV/220V voltage converting means on insulation lightning conducter
It sets, and is followed by full-bridge type PWM control switch power supply in voltage conversion device.
In this example, pass through 35kV/10kV single-core high-voltage cable first for 10kV/220V voltage conversion device high-pressure side
One end is directly connected with insulation lightning conducter, and the induced voltage on lightning conducter that will insulate introduces energy obtaining system, other end extension bar tower
Or be directly grounded, wherein high side voltage is about 10kV or so, and low-pressure side voltage is about 220V or so.
In this example, primary voltage proportionality coefficient k1, secondary voltage proportionality coefficient k2 and load blocks capacity ratio system
The number equal value of k3 is 1.The induced voltage to insulate on lightning conducter can be become available by step-down transformer by 10kV/220V
Low pressure, while low current is transformed to high current.
Circuit Fault on Secondary Transformer voltage at this time meets the input voltage model of full-bridge type PWM control switch power supply shown in FIG. 1
(90V-280V) is enclosed, a certain range of alternating voltage can be converted to by Switching Power Supply by 12V or so DC voltage, rear end is born
Carry includes wire resistor, video monitoring apparatus etc..
In this example, Switching Power Supply according to the demand of load, can reach the output electric current of 0-5A, 0-100W or so
Power.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this
In the scope of the claims of invention.
The above are preferred embodiments of the present invention, all any changes made according to the technical solution of the present invention, and generated function is made
When with range without departing from technical solution of the present invention, all belong to the scope of protection of the present invention.
Claims (1)
1. a kind of 220kV transmission line insulator lightning conducter based on Switching Power Supply takes energy method, which is characterized in that be provided with voltage
Conversion module and load blocks based on Switching Power Supply, the high-pressure side of the voltage transformation module directly passes through cable and keeps away with insulation
The connection of thunder line, the low-pressure side of voltage transformation module are connect with load blocks；This takes energy method to be accomplished by
Firstly, there is following formula
In formula: VgFor the lightning conducter induced voltage that insulate；V is the voltage under transmission line of electricity operating condition；C1For insulation lightning conducter and conducting wire it
Between capacitor；C2For the capacitor between insulation lightning conducter and the earth；
Based on electrostatic induction size, if voltage transformation module rated primary voltage is U1, wherein U1It is expressed as
U1=k1Vg
In formula: k1Refer to primary voltage proportionality coefficient；
Secondary side is simultaneously in order to cooperate the input voltage requirement of common load, if voltage transformation module secondary side output voltage is U2,
It is shown below:
U2=k2U1
In formula: k2Refer to secondary voltage proportionality coefficient；
Voltage transformation module capacity is determined by required load, and there are certain nargin, therefore voltage transformation module capacity S is selected
Formula is as follows:
S=k3U2I2
In formula: k3Refer to load blocks capacity ratio coefficient, I2Refer to load blocks output-current rating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811106221.1A CN109066825A (en) | 2018-09-21 | 2018-09-21 | 220kV transmission line insulator lightning conducter based on Switching Power Supply takes can method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811106221.1A CN109066825A (en) | 2018-09-21 | 2018-09-21 | 220kV transmission line insulator lightning conducter based on Switching Power Supply takes can method |
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2018
- 2018-09-21 CN CN201811106221.1A patent/CN109066825A/en active Pending
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Application publication date: 20181221 |