CN206564490U - A kind of three-phase high-voltage transmission line of electricity monitors equipment energy supplying system on-line - Google Patents
A kind of three-phase high-voltage transmission line of electricity monitors equipment energy supplying system on-line Download PDFInfo
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- CN206564490U CN206564490U CN201720333258.2U CN201720333258U CN206564490U CN 206564490 U CN206564490 U CN 206564490U CN 201720333258 U CN201720333258 U CN 201720333258U CN 206564490 U CN206564490 U CN 206564490U
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 53
- 230000005611 electricity Effects 0.000 title claims abstract description 36
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The utility model embodiment discloses a kind of three-phase high-voltage transmission line of electricity on-line monitoring equipment energy supplying system, wherein, three-phase high-voltage transmission line of electricity on-line monitoring equipment energy supplying system includes：Palisade electric field energy collection device is got after the energy that the Equivalent Distributed electric capacity formed between three-phase high-voltage transmission pressure and the palisade electric field energy collection device is collected, voltage is formed at the palisade electric field energy collection device two ends, so that current direction energy converter corresponding with the voltage, wherein, the palisade electric field energy collection device is arranged between the three-phase high-voltage transmission pressure and shaft tower.The utility model embodiment is powered using the electric field energy carried near wire to ultra-high-tension power transmission line on-Line Monitor Device, is greatly improved in terms of power supply reliability, therefore, the operational reliability of whole system is ensured.
Description
Technical field
The utility model is related to three-phase high-voltage transmission line of electricity field, more particularly to a kind of three-phase high-voltage transmission line of electricity is supervised online
Measurement equipment energy supplying system.
Background technology
Geographically span is big for the transmission line of electricity of China, has a very wide distribution, and ground often severe by some natural conditions
Area, to ensure the operation safety of transmission line of electricity, it is desirable to have personnel periodically carry out inspection to circuit.With the development of technology,
On-line monitoring equipment is widely applied in the field, saves substantial amounts of manpower and materials, by ultra-high-tension power transmission line in itself
Ambient influnence and cost limitation, the application of civil power are restricted, therefore the lasting reliable power supply of on-line monitoring equipment in itself is asked
Topic never obtains very adequate solution.
At present, in actual applications, it is to collect nature using the form of solar energy or wind energy mostly the collection of energy end
Energy in boundary, but this kind of mode is easily influenceed by the random factor such as weather, in the case where illumination or wind-force are weaker,
The finite energy being collected into, power output is changed greatly, therefore in loading nose, is required to configuration energy-storage battery as supplement electricity
Source, to realize the continued power to load, but the discharge and recharge number of times of battery is limited, it is necessary to regularly replace, maintenance cost is high,
In the case of extreme weather and long-term wet weather, electric energy exhausts the method day after tomorrow and timely supplemented, it will influence on-line monitoring dress
The normal work put.In addition, at present, also having consideration using the magnetic field energy of itself near laser and high-voltage conducting wires as energy
Source is collected, but for magnetic field energy, although its energy steady sources in the case of high-voltage conducting wires normal work, will not be by outer
Boundary's natural environment influence, but collecting device needs to be arranged on wire, while the distance of energy transmission is limited, the energy of collection
It is more convenient for being powered to the equipment being installed on wire, but to reduce the load-bearing of wire in itself, it is most of online
Monitoring device is installed on shaft tower.
Therefore, the power supply reliability of current ultra-high-tension power transmission line on-Line Monitor Device is improved, maintenance workload is reduced, is mesh
One technical bottleneck in the preceding field.
Utility model content
The utility model embodiment provides a kind of three-phase high-voltage transmission line of electricity and monitors equipment energy supplying system, its feature on-line
It is, including：Palisade electric field energy collection device and energy converter；
Palisade electric field energy collection device and the energy converter electrical connection；
The palisade electric field energy collection device is used to get to be received in three-phase high-voltage transmission pressure and the palisade electric field energy
After the energy that the Equivalent Distributed electric capacity formed between acquisition means is collected, electricity is formed at the palisade electric field energy collection device two ends
Pressure so that current direction energy converter corresponding with the voltage；
Wherein, the palisade electric field energy collection device is arranged between the three-phase high-voltage transmission pressure and shaft tower.
Preferably, a kind of three-phase high-voltage transmission line of electricity on-line monitoring equipment energy supplying system that the utility model embodiment is provided
Also include：Rectifier；
The energy converter and rectifier electrical connection；
The energy converter is additionally operable to a pair electric current corresponding with the voltage and enters line translation, the electricity after being converted
Stream so that the current direction rectifier after the conversion.
Preferably, a kind of three-phase high-voltage transmission line of electricity on-line monitoring equipment energy supplying system that the utility model embodiment is provided
Also include：Super capacitor；
The rectifier and super capacitor electrical connection；
The rectifier is additionally operable to carry out rectification to the electric current after the conversion, obtains the electric current after rectification so that described
Current direction super capacitor after rectification is simultaneously stored in the super capacitor with electrical energy form.
Preferably, the quantity of the palisade electric field energy collection device is 3.
Preferably, the quantity of the energy converter is 1, and the quantity of the rectifier is 1.
As can be seen from the above technical solutions, the utility model embodiment has advantages below：
The utility model embodiment provides a kind of three-phase high-voltage transmission line of electricity and monitors equipment energy supplying system on-line, including：
Palisade electric field energy collection device and energy converter；The palisade electric field energy collection device and the energy converter are electrically connected
Connect；The palisade electric field energy collection device is used to get in three-phase high-voltage transmission pressure and the palisade electric field energy collection device
Between after the energy collected of the Equivalent Distributed electric capacity that is formed, form voltage at the palisade electric field energy collection device two ends so that
Current direction energy converter corresponding with the voltage；Wherein, the palisade electric field energy collection device is arranged at described three
Between phase high voltage electricity transmission conductive wire and shaft tower.The utility model embodiment is using the electric field energy carried near wire to high voltage transmission line
Road on-Line Monitor Device is powered, and is greatly improved in terms of power supply reliability, therefore, and the operational reliability of whole system is obtained
Ensure.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, before creative labor is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
A kind of three-phase high-voltage transmission line of electricity on-line monitoring equipment energy supplying system that Fig. 1 provides for the utility model embodiment
Structural representation；
A kind of three-phase high-voltage transmission line of electricity on-line monitoring equipment energy supplying system that Fig. 2 provides for the utility model embodiment
Application examples schematic diagram；
Fig. 3 is the structural representation of palisade electric field energy collection device；
Fig. 4 is the structural representation of energy converter.
Embodiment
The utility model embodiment discloses a kind of three-phase high-voltage transmission line of electricity on-line monitoring equipment energy supplying system, improves mesh
The power supply reliability of preceding ultra-high-tension power transmission line on-Line Monitor Device, reduces maintenance workload.
Supplied referring to Fig. 1, the utility model embodiment additionally provides a kind of three-phase high-voltage transmission line of electricity on-line monitoring equipment
One embodiment of energy system, including：Palisade electric field energy collection device 2 and energy converter 3；
Palisade electric field energy collection device 2 and energy converter 3 are electrically connected；
Palisade electric field energy collection device 2 is used to get in three-phase high-voltage transmission pressure 1 and palisade electric field energy collection device 2
Between after the energy collected of the Equivalent Distributed electric capacity that is formed, form voltage at the two ends of palisade electric field energy collection device 2 so that with electricity
Press corresponding current direction energy converter 3；
Wherein, palisade electric field energy collection device 2 is arranged between three-phase high-voltage transmission pressure 1 and shaft tower.
Further, a kind of three-phase high-voltage transmission line of electricity on-line monitoring equipment energy supply system that the utility model embodiment is provided
System also includes：Rectifier；
Energy converter 3 and rectifier electrical connection；
Energy converter 3 is additionally operable to a pair electric current corresponding with voltage and enters line translation, the electric current after being converted so that become
Current direction rectifier after changing.
Further, a kind of three-phase high-voltage transmission line of electricity on-line monitoring equipment energy supply system that the utility model embodiment is provided
System also includes：Super capacitor；
Rectifier and super capacitor electrical connection；
Rectifier is additionally operable to carry out rectification to the electric current after conversion, obtains the electric current after rectification so that the electric current after rectification
Flow to super capacitor and be stored in electrical energy form in super capacitor.
Further, the quantity of palisade electric field energy collection device 2 is 3.
Further, the quantity of energy converter 3 is 1, and the quantity of rectifier is 1.
It should be noted that in energy source, three-phase high-voltage transmission pressure 1 (more than 50KV) and electric field energy collection device 2
Between form distribution capacity, distribution capacity can be collected in highfield can form voltage on energy, electric field energy collection device 2, lead to
Energy converter 3 is crossed, each phase can be with ground formation path；In order to effectively improve the energy collected, three-phase electric lead
Electric field energy collection device 2 it is in parallel, so as to form bigger electric current at the former end of energy converter 3；, can quantitative change in receiving terminal
The secondary of changing device 3 is received after the energy that coupling comes, and forms voltage and current at secondary end, then by rectifier, will hand over
The energy of manifold formula is converted into direct current and is stored in again in super capacitor, is eventually fed load (on-line monitoring equipment 4) and uses.Separately
Outside, in order to ensure power supply free of discontinuities, load carries reserve battery in itself, and its power supply mode is similar with uninterrupted power source.
The above is that the structure and connected mode for monitoring equipment energy supplying system on-line to a kind of three-phase high-voltage transmission line of electricity are carried out
Detailed description, for ease of understand, below will with a concrete application scene to a kind of three-phase high-voltage transmission line of electricity on-line monitoring set
Available energy systematic difference is illustrated, and application examples is as follows：
When flowing through alternating current in ultra-high-tension power transmission line, alternating current can produce electric field and the change of change in its surrounding space
All contain energy in magnetic field, electromagnetic field.Utilization to electric field energy, it is possible to use formed between high-tension line and surrounding devices
Distribution capacity collects the electric field energy in the neighbouring space of transmission line of electricity, electric field energy on the outside of the cross arm of tower of three-phase high-voltage transmission line of alternation current
It is as shown in Figure 2 that amount collects principle schematic.Electric field energy collection device is placed between wire and shaft tower, if split conductor, than
Such as binary fission wire, then the plane that can be formed electric field energy energy collecting device and split conductor is placed in parallel, to obtain
Larger distributed capacitance.Assuming that the Equivalent Distributed electric capacity between three-phase conducting wire and energy collecting device is respectively C1, C2, C3, examine
Considering the distance between energy collecting device and wire and electric-field intensity can be higher by relative between energy collecting device and ground
Many, therefore, ignores the distribution capacity of the latter herein.The energy that the energy collecting device of three-phase conducting wire is collected into is by one
The individual energy converter T similar to transformer, no-load voltage ratio is N, RLLoad is represented, as shown in Figure 2.
General on-Line Monitor Device all has the characteristic of low-power consumption, and the electric energy that some equipment needs is in milliwatt rank, warp
Investigation is understood, for the on-line monitoring equipment on shaft tower, if the power to 18 watts can be provided, that is, can guarantee that the normal of all devices
Power supply, therefore, when high voltage electricity transmission conductive wire voltage is very big, the energy comparison for passing to load is considerable, therefore this is that have
Unusual practical application meaning.
Assuming that three-phase conducting wire voltage is Ua, Ub, Uc, the short-circuit reactance of transformer is ignored herein, and be equivalent to ideal
Transformer, understand that flowing through the electric current of the modulate circuit primary side after energy collecting device is by Circuit theory：
Loading the power that can obtain is：
P=N2I2RL
From formula, by suitably optimizing the no-load voltage ratio of ideal transformer, improve wire voltage or reduction electric field energy is received
The distance between acquisition means and wire improve the value of distribution capacity, will all improve the transmission efficiency of energy.It is another to be led because of three-phase
The perfect symmetry instantaneous voltage sum of line is theoretically 0, therefore, in order to prevent the electric current flowed through in primary side too small, three electric fields
The capacitance of energy collection device can not be identical, i.e., in the case of energy collecting device parameter identical, it is impossible to from wire
The same position of same distance is installed by electric field energy collection device, it is desirable to have rational dislocation.
In the utility model, electric field energy, which is mainly, to be concentrated near overhead power transmission conducting wire, because high pressure on-line monitoring is set
It is standby most on shaft tower, therefore, mainly consider that the electric field near shaft tower is utilized, while facilitating the installation of equipment.To bar
Tower carries out Electromagnetic Field Analysis and modeling and simulating, as a result proves the various pieces electric-field intensity on steel tower from wire different distance
Difference is larger, and field strength is higher to be mainly near the outside of cross arm of tower.Therefore in order to obtain more energy, improve final
The power of load is sent to, it is necessary to by electric field energy collection device in the high position of field strength.In addition for convenience of installation, the utility model
Electric field energy collection device is subjected to suspension installation on cross-arm, and is provided in round lattice-shaped, dress is collected to reduce square energy
Put the edge effect of the four wedge angles appearance brought and cause the localized clusters of electric charge, electric charge is more uniformly distributed；And grid
Shape design can effectively reduce the use of material, reduce cost and efficiently mitigate weight of equipment；With electric field energy collection device water
Placing flat is compared, it is possible to reduce rainwater is accumulated with dust, it is possible to reduce the distribution capacity between electric field energy collection device and ground；
There is theory to show simultaneously, compared with complete platy structure, palisade design can't substantially reduce the function of electric field energy collection device,
Therefore it is a kind of optimization design, its structure is as shown in Figure 3.
In order to not reduce the safe insulation distance of high-voltage conducting wires, the guide metal is needed in one layer of insulation material of its outer layer covers
Material；For its concrete structure parameter, including guide plate radius, the spacing distance of lead rod internal diameter and grid then can be according to required
Target energy size be designed.
Known by existing theory, the installation site of electric field energy collection device can mainly influence the numerical value of distribution capacity, in order to
More energy are obtained, electric field energy collection device has to be arranged on the strong electric field region scope near high-voltage conducting wires, by electromagnetism
Field emulation is known, for shaft tower, and nearby field strength is most strong for its cross-arm, and tower body is then weaker, is filled accordingly, it would be desirable to which electric field energy is collected
Put installed in from nearer position on the outside of cross-arm, in addition the installation suspension height of electric field energy collection device also need by emulate come
It is determined that, to ensure that electric field energy collection device installation site is more excellent, and for energy converter and monitoring device on shaft tower
Position is not limited then.
Fig. 1 mesohighs wire is binary fission wire, and only depicts the installation of the electric field energy collection device on a cross-arm
Schematic diagram, in fact, the high voltage iron tower is three-phase power transmission, therefore, the upper or following of the cross-arm also needs to install same electricity
Field energy collection device, it is notable that in order to ensure the primary side for thering is a certain size electric current to flow through energy converter, three
Electric field energy collection device can not be arranged on same relative horizontal position, and certain dislocation is kept between it, and simultaneously
In the range of ensureing it still in highfield.
The energy obtained from the collection terminal of energy is showed in the form of exchange, simultaneously as being flowed through in high-voltage conducting wires
Electric current be to be continually changing with the change of electric load, therefore be not a fixed value, and the electric field being generated by it
Be also one change electric field, thus obtained electric field energy be it is unstable, therefore, before supply load use, it is necessary to
Direct current is first rectified into, then by voltage stabilizing, could provide and continue reliable energy and used to load.To realize this function, this
The switch used in utility model in single phase full bridge controlled rectifier, Fig. 4 is power MOSFET, and ideal transformer is secondary
The voltage of side is Uin, it is U to load the voltage on two ends that is, super capacitorL。
The utility model embodiment devises a kind of more optimal circular electric field energy collection device structure, to reduce tradition
The edge effect that square electric field energy collection device is produced, compared with traditional square flat field energy collection structure, grating structure exists
It can guarantee that same take can effectively reduce weight of equipment, reduce production cost, and be not easy to accumulate dust under efficiency
With raindrop, while beneficial to install.The electric field energy collection device outer layer of grating structure needs to wrap up one layer of resin-insulated material, to protect
Demonstrate,prove the insulation against ground safety of high-voltage conducting wires
Further, with tradition only carry out taking using single-phase transmission line can compared with, the utility model is effectively utilized height
The three-phase conducting wire of transmission pressure is pressed, the acquisition of energy can be effectively improved in source, and in the transmission end of energy, conflux three-phase conducting wire
Electric current is to same transformer (energy converter) and passes through same rectification circuit, utilize transformer phase with every phase
Than can effectively reduce the use of relevant device, reduce purchase cost.
Further, the use of super capacitor can effectively store energy, while voltage stabilizing is played a part of to load, can
To ensure to its reliable and stable power supply.
Further, in the electric supply installation in using the utility model, on-line monitoring equipment has while being configured with standby
With battery, the similar uninterrupted power source UPS of its method of operation, therefore, its reliability powered are greatly improved, while reserve battery
Service life greatly increase, cost of equipment maintenance is effectively reduced.
Further, the installation site to three-phase electric field energy collection device is inquired into, and show that it can not pacify
Loaded on same horizontal relative position on cross-arm, it is necessary to relative misalignment, to ensure that follow current flows through the primary side of ideal transformer.
In existing actual high pressure on-line monitoring equipment energy supplying system, frequently with mode be exactly outside utilization generation of electricity by new energy
Plus the mode of standby battery, unstability that generation of electricity by new energy is powered is serious so that the access times increase of stand-by power supply
Reduce the service life of battery；The electric field energy that the utility model embodiment is carried near the wire is being supplied by the way of powering
Greatly improved in terms of electric reliability, therefore, the operational reliability of whole system is ensured.
Equipment energy supplying system is monitored on-line to a kind of three-phase high-voltage transmission line of electricity provided by the utility model above to carry out
It is discussed in detail, for those of ordinary skill in the art, according to the thought of the utility model embodiment, in embodiment
And will change in application, in summary, this specification content should not be construed as to limitation of the present utility model.
Claims (5)
1. a kind of three-phase high-voltage transmission line of electricity monitors equipment energy supplying system on-line, it is characterised in that including：Palisade electric field energy is collected
Device and energy converter；
Palisade electric field energy collection device and the energy converter electrical connection；
The palisade electric field energy collection device, which is used to get to collect in three-phase high-voltage transmission pressure and the palisade electric field energy, to be filled
After the energy that the Equivalent Distributed electric capacity formed between putting is collected, voltage is formed at the palisade electric field energy collection device two ends, is made
Obtain current direction energy converter corresponding with the voltage；
Wherein, the palisade electric field energy collection device is arranged between the three-phase high-voltage transmission pressure and shaft tower.
2. three-phase high-voltage transmission line of electricity according to claim 1 monitors equipment energy supplying system on-line, it is characterised in that also wrap
Include：Rectifier；
The energy converter and rectifier electrical connection；
The energy converter is additionally operable to a pair electric current corresponding with the voltage and enters line translation, and the electric current after being converted makes
Obtain the current direction rectifier after the conversion.
3. three-phase high-voltage transmission line of electricity according to claim 2 monitors equipment energy supplying system on-line, it is characterised in that also wrap
Include：Super capacitor；
The rectifier and super capacitor electrical connection；
The rectifier is additionally operable to carry out rectification to the electric current after the conversion, obtains the electric current after rectification so that the rectification
Rear current direction super capacitor is simultaneously stored in the super capacitor with electrical energy form.
4. three-phase high-voltage transmission line of electricity according to claim 3 monitors equipment energy supplying system on-line, it is characterised in that described
The quantity of palisade electric field energy collection device is 3.
5. three-phase high-voltage transmission line of electricity according to claim 4 monitors equipment energy supplying system on-line, it is characterised in that described
The quantity of energy converter is 1, and the quantity of the rectifier is 1.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106887898A (en) * | 2017-03-31 | 2017-06-23 | 广东电网有限责任公司电力科学研究院 | A kind of three-phase high-voltage transmission line of electricity monitors equipment energy supply method and system on-line |
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2017
- 2017-03-31 CN CN201720333258.2U patent/CN206564490U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106887898A (en) * | 2017-03-31 | 2017-06-23 | 广东电网有限责任公司电力科学研究院 | A kind of three-phase high-voltage transmission line of electricity monitors equipment energy supply method and system on-line |
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