CN106026424B - Power supply system applied to power capacitor on-line monitoring system - Google Patents
Power supply system applied to power capacitor on-line monitoring system Download PDFInfo
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- CN106026424B CN106026424B CN201610490057.3A CN201610490057A CN106026424B CN 106026424 B CN106026424 B CN 106026424B CN 201610490057 A CN201610490057 A CN 201610490057A CN 106026424 B CN106026424 B CN 106026424B
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- 239000003990 capacitor Substances 0.000 title claims abstract description 59
- 238000012544 monitoring process Methods 0.000 title claims abstract description 38
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 21
- 238000007599 discharging Methods 0.000 claims abstract description 21
- 238000004146 energy storage Methods 0.000 claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims abstract description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 5
- 230000003321 amplification Effects 0.000 claims description 13
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 13
- 230000005611 electricity Effects 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 239000004973 liquid crystal related substance Substances 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000003491 array Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of power supply systems applied to power capacitor on-line monitoring system, which is characterized in that including microwave energy emitter, microwave energy reception device, energy storage device, Bidirectional charging-discharging circuit and voltage regulator circuit；The microwave energy emitter carries out energy transmission by microwave signal with microwave energy reception device, the output end of microwave energy reception device connects power capacitor on-line monitoring system power end through voltage regulator circuit through Bidirectional charging-discharging circuit connection energy storage device, the output end of Bidirectional charging-discharging circuit.The present invention takes electric convenience, high reliablity, system power dissipation low, the electric energy of milliwatt to watt grade is obtained by film rectenna array, and by power storage in miniature graphene supercapacitor group, stable voltage is exported after voltage regulator circuit, solves the powerup issue of signal power capacitor on-line monitoring system.
Description
Technical field
The present invention relates to technical field of power systems, especially a kind of confession applied to power capacitor on-line monitoring system
Electric system.
Background technique
The parallel power condenser device is widely used in electrical power distribution electric system as reactive-load compensation equipment, can be effective
The power factor of improvement system improves utilization rate of equipment and installations.But high-voltage bridging capacitor is full-load run equipment, rated current
It is larger, easily occur the aging of capacity cell after long-play and capacitor is caused to damage, capacitor capacitance value can compare
It is apparent to change.Capacitor set equipment on-line monitoring system can effectively monitor the operating status of power capacitor, work as capacitor
When device failure occurs, moreover it is possible to carry out the analysis and positioning of failure cause.Substation capacitors on-line monitoring system can be supervised effectively
Every condenser capacity variation is surveyed, advanced warning avoids accident, improves power supply reliability.
Capacitor on-line monitoring system needs to acquire every condenser current, therefore is both needed to install on every condenser terminal post
One signal pickup assembly and wireless signal transmitting device, therefore the power supply of signal pickup assembly and wireless signal transmitting module is asked
Topic becomes to restrict a key factor of capacitor on-line monitoring system operation.It is applied to capacitor on-line monitoring system at present
Power supply mode have following three kinds: 1) due to capacitor group substantial amounts be respectively mounted one on every capacitor using mains-supplied
A module is such as powered using 220V, then power cable is more, and construction is complicated, influences application prospect；2) use is solar powered, at
This is higher, is influenced by Changes in weather, and battery must be replaced after operation 2~3 years, and maintenance cost is high；3) it takes and can power using CT,
Installation is complicated, and creepage distance is short, influences capacitor group safety, and capacitor primary current jumps between 5~80A, changes model
It encloses greatly, cisco unity malfunction when CT electricity taking coil electric current is too small, electricity taking coil is saturated when too big, and primary current is caused to distort, and is fitted
Answer narrow range.
Summary of the invention
The technical problem to be solved by the invention is to provide one kind to be applied to power capacitor on-line monitoring system, takes electricity side
Just, system power dissipation is low, power supply system of high reliablity.
In order to solve the above technical problems, the technical solution used in the present invention is as follows.
Power supply system applied to power capacitor on-line monitoring system characterized by comprising
Microwave energy emitter, for emitting microwave signal；
Microwave energy reception device is converted to voltage signal for receive microwave signal and by microwave signal；
Energy storage device, for storing electric energy；
Bidirectional charging-discharging circuit, for carrying out charge and discharge control to energy storage device；
Voltage regulator circuit, for exporting supply voltage；
The microwave energy emitter and microwave energy reception device pass through microwave signal progress energy transmission, microwave energy
The output end of reception device is measured through Bidirectional charging-discharging circuit connection energy storage device, the output end of Bidirectional charging-discharging circuit is through pressure stabilizing electricity
Road connects power capacitor on-line monitoring system power end.
The above-mentioned power supply system applied to power capacitor on-line monitoring system, the microwave energy emitter include according to
Microprocessor, phaselocked loop, numerical-control attenuator, drive amplification circuit, power amplification circuit and the electromagnetic horn of secondary connection, it is described
Phaselocked loop exports the microwave signal of 5-6GHz, 36dBm, through numerical-control attenuator, drive amplification circuit, power amplification circuit processing
The microwave power signal of 2-4W is exported afterwards.
The above-mentioned power supply system applied to power capacitor on-line monitoring system, the microwave energy emitter further include
The microwave detection circuit for the microwave power signal for detecting electromagnetic horn transmitting being connect with microprocessor input.
The above-mentioned power supply system applied to power capacitor on-line monitoring system, the microwave energy emitter further include
The liquid crystal display being connect with output end of microprocessor.
The above-mentioned power supply system applied to power capacitor on-line monitoring system, the electromagnetic horn are mounted on by single-chip microcontroller
On the controllable holder of control.
The above-mentioned power supply system applied to power capacitor on-line monitoring system, the microwave energy reception device include peace
Film rectenna array, front-end protection circuit, signal conversion circuit and current rectifying and wave filtering circuit on power capacitor, institute
It states film rectenna array and converts electricity through signal for receiving the microwave signal of microwave energy emitter transmitting, microwave signal
After road is converted to voltage signal, then the rectification of rectified filter circuit, filtering processing obtain stable voltage signal and are sent into two-way fill
Discharge circuit.
The above-mentioned power supply system applied to power capacitor on-line monitoring system, the core mould of the Bidirectional charging-discharging circuit
Block is DC-DC module.
The above-mentioned power supply system applied to power capacitor on-line monitoring system, the energy storage device are by several 1~3V
The miniature graphene supercapacitor group that supercapacitor is constituted in series and parallel.
The above-mentioned power supply system applied to power capacitor on-line monitoring system, the power supply system further includes being mounted on electricity
The current transformer energy taking device of power capacitor outlet casing tube root, the output end connection of current transformer energy taking device is two-way to fill
The input terminal of discharge circuit.
Due to using above technical scheme, the invention technological progress is as follows.
The present invention takes electric convenient, high reliablity, the electric energy of milliwatt to watt grade is obtained by film rectenna array, and will
Power storage exports stable voltage in miniature graphene supercapacitor group after voltage regulator circuit, solves signal electric power electricity
The powerup issue of container on-line monitoring system.Present system is low in energy consumption, each acquisition of power capacitor on-line monitoring system
Power consumption is at mW grades in maximum power point, suspend mode for unit time-sharing work, and power consumption is less than 1W when data are transmitted.The present invention
Also settable current transformer energy taking device, assisted microwave synthesis energy supply, improves the reliability of power supply.
Detailed description of the invention
Fig. 1 is structural block diagram of the invention；
Fig. 2 is the structural block diagram of microwave energy emitter of the present invention；
Fig. 3 is the structural schematic diagram of microwave energy emitter of the present invention；
Fig. 4 is the structural block diagram of microwave energy reception device of the present invention；
Fig. 5 is scheme of installation of the invention.
Wherein: 1. power capacitors, 2. film rectenna arrays, 3. microwave energy emitters, 4. current transformers
Energy taking device.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be described in further detail.
A kind of power supply system applied to power capacitor on-line monitoring system, structure include: microwave energy as shown in Figure 1
Measure emitter, microwave energy reception device, energy storage device, Bidirectional charging-discharging circuit and voltage regulator circuit, microwave energy transmitting
Device and microwave energy reception device are by microwave signal progress energy transmission, and the output end of microwave energy reception device is through two-way
Charge-discharge circuit connects energy storage device, and the output end of Bidirectional charging-discharging circuit is through voltage regulator circuit connection power capacitor on-line monitoring
System power supply end provides operating voltage for it.
Microwave energy emitter guarantees the output power of microwave transmission system for emitting microwave signal.Microwave energy
The structure of emitter is as shown in Fig. 2, include microprocessor, phaselocked loop, numerical-control attenuator, drive amplification circuit, power amplification
Circuit, electromagnetic horn, microwave detection circuit and liquid crystal display, microprocessor, phaselocked loop, numerical-control attenuator, drive amplification
Circuit, power amplification circuit and electromagnetic horn are sequentially connected, and the output end and microprocessor input of microwave detection circuit connect
It connects, the input terminal of liquid crystal display is connect with output end of microprocessor, and surface structure is as shown in Figure 3.
In the present invention, microprocessor use MP430 single-chip microcontroller, microwave energy emitter under control of the microprocessor,
Using the microwave signal of phaselocked loop output 5-6GHz, 36dBm, which puts through numerical-control attenuator, drive amplification circuit, power
The microwave power signal that 2-4W is exported after big processing of circuit, is emitted to free space finally by electromagnetic horn；Microwave signal hair
After out, the power test of the microwave power signal of electromagnetic horn transmitting is completed by microwave detecting circuit, is become and input power
Corresponding voltage after being converted by ADC7805, is shown by liquid crystal display.Certain microwave energy emitter can also be set
Input unit is set, the parameters such as output power and output frequency for adjusting the input of microwave energy emitter.
In the present embodiment, to guarantee that the microwave energy reception device being mounted on every power capacitor can receive
Microwave signal can also be mounted on one by monolithic processor controlled controllable by microwave energy emitter or individually by electromagnetic horn
On holder, the steering of electromagnetic horn is completed by controlling controllable holder rotation, further realizes the comprehensive of microwave power signal
Transmission.
Microwave energy reception device is mounted on power capacitor, is converted to for receive microwave signal and by microwave signal
Voltage signal is stored after then rectified, filtering and steady pressure treatment or is powered to power capacitor on-line monitoring system.Microwave energy
The structure of reception device is measured as shown in figure 4, including film rectenna array, front-end protection circuit, signal conversion circuit and whole
Filter circuit is flowed, film rectenna array is used to receive the microwave signal of microwave energy emitter transmitting, microwave signal warp
After signal conversion circuit is converted to voltage signal, then the rectification of rectified filter circuit, filtering processing obtain stable voltage signal
It is sent into Bidirectional charging-discharging circuit.
Film rectenna array uses 8 × 8 arrays, for collecting microwave energy.In order to prevent lightning impulse current and
Power circuit is burnt when transient fault high current, film is limited using transient supression diode (TVS) in front-end protection circuit
The surge voltage of rectenna array output end.
Energy storage device is mounted on power capacitor, for storing electric energy.In the present invention, energy storage device be by several 1~
The miniature graphene supercapacitor group that 3V supercapacitor is constituted in series and parallel meets real system to voltage and energy grade
It needs, can be when film rectenna array receive voltage, Bidirectional charging-discharging circuit maintains load suspend mode, while
It charges to itself, so that extra energy storage be got up；And when film rectenna array does not receive microwave energy, it is in
Discharge condition provides energy for load.
Bidirectional charging-discharging circuit uses isolation improvement type circuit design, for carrying out charge and discharge control to energy storage device.It is double
To the nucleus module of charge-discharge circuit be DC-DC module, DC-DC modular circuit select LT3748 controller, LT3748 be every
The switching regulator controller of release reverse exciting topological structure, is capable of providing high power, can be from a 7V in internal regulation
Power supply drives N channel power MOS FET outside low side；Due to the device directly from main side flyback waveform come detect isolation it is defeated
Voltage out, there is no need to realize pressure stabilizing by the tertiary winding or optoisolator.Electromagnetism for raising Bidirectional charging-discharging circuit is simultaneous
Capacitive reduces area, installs choke coil additional using four layers of pcb board design scheme, and in DC-DC module input and output side, improves
Anti-interference ability.
Voltage regulator circuit, for maintaining the stability of output voltage, to meet the power supply of data acquisition transmitting module
Demand.In the present invention voltage regulator circuit take can supply voltage output area it is big, can according to require selection+5V, -5~+5V ,+
12V, voltage stabilization, ripple factor is small, strong antijamming capability, and actual measurement EMC can reach IV grade, transfer efficiency is in 85% or more, capacity
Greatly, extreme value reaches 15VA, works normally 10VA, meets the power demands of power capacitor on-line monitoring system.
Since the quantity of power capacitor in electric system is more, site layout project is close, therefore the present invention is also in electric power electricity
Container outlet casing tube root is provided with current transformer energy taking device, and the output end connection of current transformer energy taking device is two-way to fill
The input terminal of discharge circuit.The mounting means of each component of the present invention is as shown in Figure 5.
For convenience of installation, the present invention is by current transformer energy taking device, microwave energy reception device, Bidirectional charging-discharging circuit
Integrated design is carried out with voltage regulator circuit, i.e., by current transformer energy taking device, microwave energy reception device, Bidirectional charging-discharging electricity
Road, voltage regulator circuit and power capacitor on-line monitoring system are mounted in a shell, and by the thin of microwave energy reception device
Film rectenna array is mounted on case surface, and shell uses engineering plastics mold single injection-molded, and degree of protection is reachable
IP7, -40 DEG C~+65 DEG C of environment temperature can normal full load work.It is mounted as a whole on the root of capacitor outlet casing tube, with existing
Field power capacitor casing size calculates, and the creepage distance after installation is about 30cm, by than calculating away from 2.5cm/kV, meets three-level
Filth requires；Current transformer is using opening design, and without changing capacitor wiring when installation, easy for installation, construction volume is few.Storage
Energy device is then individually encapsulated using Stainless Steel Shell, using each component in aviation plug, outdoor water-proof cable and above-mentioned shell
Connection, is placed on power capacitor side, does not influence original system safety.
Claims (8)
1. being applied to the power supply system of power capacitor on-line monitoring system characterized by comprising
Microwave energy emitter, for emitting microwave signal；The microwave energy emitter includes sequentially connected micro- place
Device, phaselocked loop, numerical-control attenuator, drive amplification circuit, power amplification circuit and electromagnetic horn are managed, the phaselocked loop exports 5-
The microwave signal of 6GHz, 36dBm export 2-4W's after numerical-control attenuator, drive amplification circuit, power amplification circuit processing
Microwave power signal；
Microwave energy reception device is converted to voltage signal for receive microwave signal and by microwave signal；
Energy storage device, for storing electric energy；
Bidirectional charging-discharging circuit, for carrying out charge and discharge control to energy storage device；
Voltage regulator circuit, for exporting supply voltage；
The microwave energy emitter is mounted on one by being revolved on monolithic processor controlled controllable holder by controlling controllable holder
The steering for turning completion electromagnetic horn further realizes the comprehensive transmission of microwave power signal；
By microwave signal progress energy transmission, microwave energy receives dress for microwave energy emitter and microwave energy reception device
The output end set connects electricity through voltage regulator circuit through Bidirectional charging-discharging circuit connection energy storage device, the output end of Bidirectional charging-discharging circuit
Power capacitor on-line monitoring system power end.
2. the power supply system according to claim 1 applied to power capacitor on-line monitoring system, which is characterized in that institute
Stating microwave energy emitter further includes being connect with microprocessor input for detecting the microwave power of electromagnetic horn transmitting
The microwave detection circuit of signal.
3. the power supply system according to claim 1 applied to power capacitor on-line monitoring system, which is characterized in that institute
Stating microwave energy emitter further includes the liquid crystal display connecting with output end of microprocessor.
4. the power supply system according to any one of claims 1 to 3 applied to power capacitor on-line monitoring system, special
Sign is that the electromagnetic horn is mounted on by monolithic processor controlled controllable holder.
5. the power supply system according to claim 1 applied to power capacitor on-line monitoring system, which is characterized in that institute
Stating microwave energy reception device includes the film rectenna array being mounted on power capacitor, front-end protection circuit, signal
Conversion circuit and current rectifying and wave filtering circuit, the film rectenna array are used to receive the microwave of microwave energy emitter transmitting
Signal, microwave signal is after signal conversion circuit is converted to voltage signal, then the rectification of rectified filter circuit, filtering processing obtain
Stable voltage signal is sent into Bidirectional charging-discharging circuit.
6. the power supply system according to claim 1 applied to power capacitor on-line monitoring system, which is characterized in that institute
The nucleus module for stating Bidirectional charging-discharging circuit is DC-DC module.
7. the power supply system according to claim 1 applied to power capacitor on-line monitoring system, which is characterized in that institute
Stating energy storage device is the miniature graphene supercapacitor group being made of in series and parallel several 1~3V supercapacitors.
8. the power supply system according to claim 1 applied to power capacitor on-line monitoring system, which is characterized in that institute
Stating power supply system further includes the current transformer energy taking device for being mounted on power capacitor outlet casing tube root, and current transformer takes
The input terminal of the output end connection Bidirectional charging-discharging circuit of energy device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610490057.3A CN106026424B (en) | 2016-06-29 | 2016-06-29 | Power supply system applied to power capacitor on-line monitoring system |
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| CN201610490057.3A CN106026424B (en) | 2016-06-29 | 2016-06-29 | Power supply system applied to power capacitor on-line monitoring system |
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| CN106026424A CN106026424A (en) | 2016-10-12 |
| CN106026424B true CN106026424B (en) | 2019-03-26 |
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| CN107247162A (en) * | 2017-07-20 | 2017-10-13 | 云南电网有限责任公司电力科学研究院 | The electric power system of active electronic transformer mesohigh lateral circuit |
| CN108448746B (en) * | 2018-03-14 | 2021-09-10 | 上海空间电源研究所 | Micro-energy acquisition and maximum power output device and method of microwave energy transmission system |
| CN115655515B (en) * | 2022-12-07 | 2023-03-14 | 四川赛康智能科技股份有限公司 | High-voltage switch cabinet online temperature measurement system based on energy information integrated transmission technology |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN204361766U (en) * | 2015-02-06 | 2015-05-27 | 国网四川省电力公司电力科学研究院 | On-line monitoring device for transmission line based on microwave transmission is got can system |
| CN205070621U (en) * | 2015-10-14 | 2016-03-02 | 曹金鑫 | Wireless power supply system of 110kV transmission line video monitoring device |
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| US8582330B2 (en) * | 2009-01-23 | 2013-11-12 | Lockheed Martin Corporation | High voltage and frequency distributed power system |
| CN204334132U (en) * | 2015-01-07 | 2015-05-13 | 浙江大学 | A kind of microwave type wireless power supply system for wireless senser |
| CN205029402U (en) * | 2015-10-23 | 2016-02-10 | 刘南平 | Wireless charging system of microwave based on array antenna |
| CN105656215B (en) * | 2016-03-25 | 2018-08-21 | 浙江大学 | A kind of wireless energy transform device and its method of high voltage transmission line non-contact power |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN204361766U (en) * | 2015-02-06 | 2015-05-27 | 国网四川省电力公司电力科学研究院 | On-line monitoring device for transmission line based on microwave transmission is got can system |
| CN205070621U (en) * | 2015-10-14 | 2016-03-02 | 曹金鑫 | Wireless power supply system of 110kV transmission line video monitoring device |
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Effective date of registration: 20170427 Address after: 028000 the Inner Mongolia Autonomous Region, Tongliao, the new West Street, No. 0097 Applicant after: Tongliao electric company of State Grid Eastern Inner Mongolia Electric Power Co., Ltd. Applicant after: Baoding Sairui Electric Power Technology Co. Ltd. Applicant after: State Grid Corporation of China Address before: 028000 the Inner Mongolia Autonomous Region, Tongliao, the new West Street, No. 0097 Applicant before: Tongliao electric company of State Grid Eastern Inner Mongolia Electric Power Co., Ltd. Applicant before: Baoding Sairui Electric Power Technology Co. Ltd. |
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