CN108322094A - For the energy collecting device of power supply system, monitoring system and wireless sensor node - Google Patents
For the energy collecting device of power supply system, monitoring system and wireless sensor node Download PDFInfo
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- CN108322094A CN108322094A CN201710035807.2A CN201710035807A CN108322094A CN 108322094 A CN108322094 A CN 108322094A CN 201710035807 A CN201710035807 A CN 201710035807A CN 108322094 A CN108322094 A CN 108322094A
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- power supply
- supply system
- collecting device
- energy collecting
- wireless sensor
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 33
- 238000004891 communication Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 230000009466 transformation Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
- 239000005439 thermosphere Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000002618 waking effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N11/00—Generators or motors not provided for elsewhere; Alleged perpetua mobilia obtained by electric or magnetic means
- H02N11/002—Generators
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
- H10N10/10—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects
- H10N10/17—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects characterised by the structure or configuration of the cell or thermocouple forming the device
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- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention discloses a kind of for the energy collecting device of power supply system, monitoring system and wireless sensor node, wherein the energy collecting device includes：Heat-conducting layer is contacted with the power cable of the power supply system；Thermoelectric material layer is arranged on the heat-conducting layer；And heat exchange layer, it is arranged in the thermoelectric material layer.
Description
Technical field
The present invention relates to direct current supply technical fields, and in particular to a kind of energy collecting device, prison for power supply system
Control system and wireless sensor node.
Background technology
The state of the entire power supply system of monitoring, such as the breakdown of cable surface temperature, energy are usually required in power supply system
It notifies (energy break down notification), measurement of partial discharge result etc., needs to acquire these state parameters
And server is sent it to, server can start specific action to optimize confession by analyzing these state parameters
The performance of electric system, or start predictive maintenance task.
In order to acquire these state parameters, need to lay distributed wireless sensor node in power supply system, however mesh
Preceding existing huge problem is the power supply of these distributed wireless sensor nodes.It is existing for ac power supply system
A kind of way is powered to wireless sensor node using the oscillating magnetic field around cable, but for defeated over long distances
The loss of electricity, ac power supply system is huge, at present more and more use direct current supply technology, such as high voltage direct current (HVDC,
High Voltage Direct Current) system carries out long distance powedr transmission.
For DC power-supply system, a kind of existing way is powered to wireless sensor node using battery,
But need to execute huge maintenance task in this way, it is costly in terms of time and cost；Another existing way is profit
Distributed wireless sensor node is powered with solar energy, it is not only of high cost, but also the performance of wireless sensor node
Weather condition is depended greatly on availability.
Invention content
In view of this, an embodiment of the present invention provides it is a kind of for the energy collecting device of power supply system, monitoring system and
Wireless sensor node, to solve the problems, such as that existing power supply system monitoring cost is high and is not easy to safeguard.
According in a first aspect, an embodiment of the present invention provides a kind of energy collecting devices for power supply system, including：It leads
Thermosphere is contacted with the power cable of the power supply system；Thermoelectric material layer is arranged on the heat-conducting layer；And heat exchange layer, if
It sets in the thermoelectric material layer.
Optionally, at least one of the heat-conducting layer, the thermoelectric material layer and described heat exchange layer are annular and surround
The power cable setting.
Optionally, the thermoelectric material layer is made of multiple cylindrical or rectangle thermoelectric generators.
Optionally, the thermoelectric material layer is fabricated from a flexible material.
Optionally, the heat exchange layer is the cooling fin for having multiple radiating fins.
According to second aspect, an embodiment of the present invention provides a kind of monitoring systems for power supply system, including：It is wireless to pass
Sensor node, for collecting and sending state parameter of the power supply system；Energy described in any one of above-mentioned first aspect
Collection device, for powering to the wireless sensor node.
Optionally, the wireless sensor node is multiple, and the energy collecting device is multiple, the power supply system prison
Control system further includes：Power sub-system is connect with multiple energy collecting devices, for receiving and storing the collection of energy
Electric energy caused by device, and power to multiple wireless sensor nodes.
Optionally, the power sub-system is additionally operable to distribute electric energy to multiple wireless sensor nodes；And/or by institute
State the operating voltage that voltage transformation caused by energy collecting device is the wireless sensor node.
Optionally, the power supply system is DC power-supply system.
According to the third aspect, an embodiment of the present invention provides a kind of wireless sensor nodes for power supply system, including：
Harvester, the state parameter for acquiring power supply system；Communication device, for sending acquired power supply system to outside
State parameter；Energy collecting device described in any one of above-mentioned first aspect is used for the harvester and the communication
Device is powered.
Energy collecting device and monitoring system according to the ... of the embodiment of the present invention for power supply system, using flow through power supply system
The electric current of the power cable of system makes the thermoelectric material layer both sides of energy collecting device the temperature difference occur, so that thermoelectricity material
The bed of material produce electricl energy for monitor power supply system state wireless sensor node power supply, without execute huge maintenance task and
It is of low cost.
Wireless sensor node according to the ... of the embodiment of the present invention for power supply system, wireless sensor node are internally integrated
There is energy collecting device, when laying monitoring to power supply system, it is only necessary to which wireless sensor node is placed on power supply system
On power cable, any wiring need not be carried out, at low cost and reliability is high.
Description of the drawings
The features and advantages of the present invention can be more clearly understood by reference to attached drawing, attached drawing is schematically without that should manage
Solution is carries out any restrictions to the present invention, in the accompanying drawings：
Fig. 1 shows the schematic diagram of the energy collecting device according to the ... of the embodiment of the present invention for power supply system；
Fig. 2 shows the sectional views of the dotted line A-A along Fig. 1；
Fig. 3 shows the schematic diagram of the monitoring system according to the ... of the embodiment of the present invention for power supply system；
Fig. 4 shows the schematic diagram of the monitoring system according to another embodiment of the present invention for power supply system；
Fig. 5 shows the schematic diagram of wireless sensor node according to the ... of the embodiment of the present invention.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those skilled in the art are not having
There is the every other embodiment obtained under the premise of making creative work, shall fall within the protection scope of the present invention.
Fig. 1 shows the schematic diagram of the energy collecting device according to the ... of the embodiment of the present invention for power supply system, the energy
Collection device can be used for monitor the wireless sensor node power supply of power supply system state, as shown in Figure 1, energy collecting device
20 may include heat-conducting layer 21, thermoelectric material layer 22 and heat exchange layer 23, the wherein power cable 10 of heat-conducting layer 21 and power supply system
Contact, the heat transfer that power cable 10 is generated are arranged to thermoelectric material layer 22, thermoelectric material layer 22 on heat-conducting layer 21,
And heat exchange layer 23 is arranged in thermoelectric material layer 22.
During power supply system is run, the electric current of the power cable 10 of power supply system is flowed through due to Ohmic resistance and to supply
Electric wire cable 10 heats up relative to environment temperature so that and there is the temperature difference in 22 both sides of thermoelectric material layer of energy collecting device 20, to
Thermoelectric material layer 22 can be made to produce electricl energy to monitor the wireless sensor node power supply of power supply system state, without executing
Huge maintenance task and of low cost.Energy collecting device application scenarios according to the ... of the embodiment of the present invention are extensive, can apply
In direct current or ac power supply system, it is particularly suitable for DC power-supply system.
In order to increase the contact area with power cable 10, so that thermoelectric material layer 22 can generate more electric energy,
In some embodiments of the present invention, energy collecting device 20 is annular, and is arranged around power cable 10, such as Fig. 1 and Fig. 2 institutes
Show, heat-conducting layer 21, thermoelectric material layer 22 and heat exchange layer 23 are annular, and are arranged around power cable 10, i.e., heat-conducting layer 21 encloses
It is arranged around power cable 10, thermoelectric material layer 22 is arranged around heat-conducting layer 21, and heat exchange layer 23 is arranged around thermoelectric material layer 22.Figure
1 and energy collecting device shown in Fig. 2 be intended only as example, be not intended to limit the present invention, heat-conducting layer 21, thermoelectric material layer
22 and heat exchange layer 23 need not all be annular.
In some embodiments of the invention, thermoelectric material layer 22 can be by multiple cylindrical modules or rectangular module structure
At, can more preferably be fabricated from a flexible material, so as to surround power cable 10 be arranged, heat exchange layer 23 can be have it is more
The cooling fin of a radiating fin, heat-conducting layer 21 and heat exchange layer 23 are made of high thermal conductivity material, such as the metal materials such as copper, aluminium,
To realize maximum temperature difference in 22 both sides of thermoelectric material layer.
Power supply system during normal operation, the maximum temperature of power cable reaches as high as 80 DEG C, in the case of an overload most
High-temperature is up to 170 DEG C, and high-temperature cable can even work at a temperature of up to 210 DEG C, and ambient temperature usually exists
Even 40 DEG C hereinafter, by environment temperature be 40 DEG C calculating, for power supply system normal operation in the case of, in thermoelectric material layer
22 both sides at least may exist the available temperature difference of Δ T=40K.
Certainly, due in supply line load can constantly change, can, along the temperature of power cable and non-constant, supplying
When loading extremely low in electric line, display is measured by testing, power cable still can keep the temperature of 5K-10K with environment temperature
Difference.In general, the energy density of thermoelectric generator is about 3500 μ W/cm under the 40K temperature difference2, it is about then 3.5 μ W/ under the 5K temperature difference
cm2.In general, the distributed wireless sensor node continuous collecting and power consumption for sending power supply system state parameter is about 100mW,
Here, it will be assumed that the efficiency of DC/DC converters is 40%, energy-storing efficiency 80%, distributed wireless sensor node
The operation for waking up, acquiring and send power supply system state parameter is 5 seconds, and the time interval for monitoring power supply system is 15 minutes,
Can estimate makes the length of the energy collecting device 20 needed for distributed wireless sensor node normal work, as shown in table 1 below.
The length of required energy collecting device under 1 different condition of table
As can be seen from the above table, in the case where wireless sensor node is run 5 seconds for every 15 minutes, even if in supply line
It is upper load it is extremely low when, also only need the energy collecting device of 4.2-6.3cm long, so that it may so that the normal work of wireless sensor node
Make；In power supply system normal operation, even if only needing the energy of 3.8-5.7cm long if wireless sensor node continuous service
Collection device, so that it may so that wireless sensor node works normally, therefore, be received from supply line itself by energy collecting device
Integrate thermal energy to be feasible as wireless sensor node power supply.
As shown in figure 3, the embodiment of the present invention additionally provides a kind of monitoring system for power supply system, may include nothing
Line sensor node 31 and energy collecting device 32, wherein wireless sensor node 31 power supply system for collecting and sending
State parameter, energy collecting device 32 be used for wireless sensor node 31 power, energy collecting device 32 can be as above
Energy collecting device described in text.
Monitoring system according to the ... of the embodiment of the present invention for power supply system, by energy collecting device from supply line from
Body collects thermal energy to power for wireless sensor node, without executing huge maintenance task and of low cost, and applied field
Scape is extensive, can be applied to direct current or ac power supply system, is particularly suitable for DC power-supply system.
In some embodiments of the invention, in order to carry out overall monitor to power supply system, as shown in figure 4, wireless sensing
Device node 41 is multiple, and energy collecting device 42 is also multiple, which can also include power sub-system
43, power sub-system 43 is connect with multiple energy collecting devices 42, for receiving and storing caused by energy collecting device 42
Electric energy, and power to multiple wireless sensor nodes 41.Energy collecting device is received and stored by using power sub-system
Generated electric energy, it is possible thereby to power storage caused by energy collecting device be got up, to realize wireless sensor node
Intermittent work.
Since load can constantly change in supply line so that electricity caused by the energy collecting device in different location
Can be different, generated electric energy is transferred to power sub-system by each energy collecting device, and power sub-system can be reasonably
Electric energy is distributed to each wireless sensor node, so that power supply system monitoring system can work normally.Certainly, in some feelings
Under condition, the operating voltage of wireless sensor node is different from voltage caused by energy collecting device, and at this moment power sub-system is also
It is converted for DC/DC, by the operating voltage that voltage transformation caused by energy collecting device is wireless sensor node.
In order to enable the circuit structure of monitoring system is more simply laid with facilitating, the embodiment of the present invention additionally provides one kind
For the wireless sensor node of power supply system, as shown in figure 5, the wireless sensor node may include harvester 51, lead to
Device 52 and energy collecting device 53 are interrogated, wherein harvester 51 is used to acquire the state parameter of power supply system, communication device 52
For to the external state parameter for sending acquired power supply system, energy collecting device 53 to be used for harvester 51 and communication
Device 52 is powered, and energy collecting device 53 can be energy collecting device as described above, be integrated in wireless sensor node
Point is internal, when laying monitoring system to power supply system, it is only necessary to which the wireless sensor node in the present embodiment is placed on confession
On the power cable of electric system, any wiring need not be carried out, at low cost and reliability is high.
Wireless sensor node according to the ... of the embodiment of the present invention, since it has been internally integrated energy collecting device, to supplying
When electric system lays monitoring, it is only necessary to wireless sensor node is placed on the power cable of power supply system, do not needed
Any wiring is carried out, at low cost and reliability is high, and application scenarios are extensive, can be applied to direct current or ac power supply system,
It is particularly suitable for DC power-supply system.
Although being described in conjunction with the accompanying the embodiment of the present invention, those skilled in the art can not depart from the present invention
Spirit and scope in the case of various modifications and variations can be made, such modifications and variations are each fallen within by appended claims institute
Within the scope of restriction.
Claims (10)
1. a kind of energy collecting device for power supply system, which is characterized in that including：
Heat-conducting layer is contacted with the power cable of the power supply system；
Thermoelectric material layer is arranged on the heat-conducting layer；And
Heat exchange layer is arranged in the thermoelectric material layer.
2. energy collecting device according to claim 1, which is characterized in that the heat-conducting layer, the thermoelectric material layer and
At least one of described heat exchange layer is annular and is arranged around the power cable.
3. energy collecting device according to claim 2, which is characterized in that the thermoelectric material layer by multiple cylindrical or
Rectangle thermoelectric generator is constituted.
4. energy collecting device according to claim 2, which is characterized in that the thermoelectric material layer is by flexible material system
At.
5. according to the energy collecting device described in any one of claim 1-4, which is characterized in that the heat exchange layer is with more
The cooling fin of a radiating fin.
6. a kind of monitoring system for power supply system, which is characterized in that including：
Wireless sensor node, for collecting and sending state parameter of the power supply system；
Energy collecting device described in any one of claim 1-5, for powering to the wireless sensor node.
7. monitoring system according to claim 6, which is characterized in that the wireless sensor node is multiple, the energy
It is multiple to measure collection device, and the power supply system monitoring system further includes：
Power sub-system is connect with multiple energy collecting devices, is produced for receiving and storing the energy collecting device
Raw electric energy, and power to multiple wireless sensor nodes.
8. monitoring system according to claim 7, which is characterized in that the power sub-system is additionally operable to multiple nothings
Line sensor node of system distribution electric energy；And/or by voltage transformation caused by the energy collecting device be the wireless sensor
The operating voltage of node.
9. according to the monitoring system described in any one of claim 6-8, which is characterized in that the power supply system is direct current supply
System.
10. a kind of wireless sensor node for power supply system, which is characterized in that including：
Harvester, the state parameter for acquiring power supply system；
Communication device, for the state parameter to the acquired power supply system of external transmission；
Energy collecting device described in any one of claim 1-5, for being supplied to the harvester and the communication device
Electricity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710035807.2A CN108322094A (en) | 2017-01-18 | 2017-01-18 | For the energy collecting device of power supply system, monitoring system and wireless sensor node |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710035807.2A CN108322094A (en) | 2017-01-18 | 2017-01-18 | For the energy collecting device of power supply system, monitoring system and wireless sensor node |
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| CN108322094A true CN108322094A (en) | 2018-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710035807.2A Pending CN108322094A (en) | 2017-01-18 | 2017-01-18 | For the energy collecting device of power supply system, monitoring system and wireless sensor node |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110401326A (en) * | 2019-08-02 | 2019-11-01 | 南方电网科学研究院有限责任公司 | Cable energy collecting device |
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| CN102904487A (en) * | 2011-07-25 | 2013-01-30 | 波音公司 | Thermoelectric power generation from power feeder |
| CN103107738A (en) * | 2013-01-23 | 2013-05-15 | 浙江大学 | Power supply device for seafloor power cable failure diagnosis capable of generating electricity through temperature difference |
| KR20130129333A (en) * | 2013-10-02 | 2013-11-28 | 중앙대학교 산학협력단 | Apparatus for stray electric field energy harvesting and supplying electric power of sensor network |
| CN104852632A (en) * | 2014-02-14 | 2015-08-19 | 洛克威尔自动控制亚太业务中心有限公司 | Energy harvesting system for remote monitoring devices |
| CN105606236A (en) * | 2016-03-18 | 2016-05-25 | 西安交通大学 | Passive wireless temperature measurement sensor, and temperature measurement method thereof |
-
2017
- 2017-01-18 CN CN201710035807.2A patent/CN108322094A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102904487A (en) * | 2011-07-25 | 2013-01-30 | 波音公司 | Thermoelectric power generation from power feeder |
| CN103107738A (en) * | 2013-01-23 | 2013-05-15 | 浙江大学 | Power supply device for seafloor power cable failure diagnosis capable of generating electricity through temperature difference |
| KR20130129333A (en) * | 2013-10-02 | 2013-11-28 | 중앙대학교 산학협력단 | Apparatus for stray electric field energy harvesting and supplying electric power of sensor network |
| CN104852632A (en) * | 2014-02-14 | 2015-08-19 | 洛克威尔自动控制亚太业务中心有限公司 | Energy harvesting system for remote monitoring devices |
| CN105606236A (en) * | 2016-03-18 | 2016-05-25 | 西安交通大学 | Passive wireless temperature measurement sensor, and temperature measurement method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110401326A (en) * | 2019-08-02 | 2019-11-01 | 南方电网科学研究院有限责任公司 | Cable energy collecting device |
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Address after: 34 Mark Grafin Avenue, Berlin, Germany Applicant after: GLOBAL ENERGY INTERCONNECTION RESEARCH INSTITUTE EUROPE GmbH Applicant after: GLOBAL ENERGY INTERCONNECTION RESEARCH INSTITUTE Co.,Ltd. Applicant after: STATE GRID CORPORATION OF CHINA Address before: 34 Mark Grafin Avenue, Berlin, Germany Applicant before: GLOBAL ENERGY INTERCONNECTION RESEARCH INSTITUTE EUROPE GmbH Applicant before: GLOBAL ENERGY INTERCONNECTION RESEARCH INSTITUTE Co.,Ltd. Applicant before: State Grid Corporation of China |
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Application publication date: 20180724 |