CN103117587A - Supercapacitor power supply device applicable to ring main units - Google Patents
Supercapacitor power supply device applicable to ring main units Download PDFInfo
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- CN103117587A CN103117587A CN2013100761351A CN201310076135A CN103117587A CN 103117587 A CN103117587 A CN 103117587A CN 2013100761351 A CN2013100761351 A CN 2013100761351A CN 201310076135 A CN201310076135 A CN 201310076135A CN 103117587 A CN103117587 A CN 103117587A
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Abstract
The invention discloses a supercapacitor power supply device applicable to ring main units. Two CT (current transformers) are connected in parallel to access power from a line. The CTs are connected with an induction power module. After accessing the power, the CTs are processed by the induction power module into loads for supplying power and charging supercapacitors, and a solar power supply device serves as energy supplement for charging the supercapacitors. Compared with the power supply device used for RMU (ring main unit) online monitoring systems, the supercapacitor power supply device is provided with the CTs (clamps) to access the power, no power stoppage is needed when monitoring equipment is installed in an RMU, modification on the RMU is avoided, and labor is saved greatly. The supercapacitors are used as energy storage devices to replace chemical energy-storage batteries, maintenance labor in operation period is lowered, and equipment lifetimes are prolonged greatly.
Description
Technical field
The present invention relates to a kind of super capacitor-type supply unit that is applicable to ring main unit, belong to the power technology field.
Background technology
At present, along with the proposition of state net company intelligent grid strategy, distribution network automated had a new intension, and relevant technical research is also progressively carried out, and its main focus is automation and intellectuality.Ring main unit can deciliter, bearing load electric current, looped network electric current, be the visual plant in the ring network power supply system.One of main contents of electrical power distribution automatization system to the health status of various device in ring main unit and the monitoring of running status.Due to the ring main unit infield mostly out of doors, power supply is not provided in cabinet usually, the supply unit of powering for the interior transducer of cabinet, communication apparatus need to possess gets the energy ability, and power supply also should keep switching on to transmit fault message to communication apparatus when Distribution Network Failure.The existing power supply device adopts PT or solar energy power taking, chemical energy batteries to store energy mostly, and several larger deficiencies are arranged, and the one, PT volume is large, and in cabinet, the space is little, and the maintenance, the maintenance that affect ring main unit after PT are installed; The 2nd, PT is installed to be needed to have a power failure, and need to could if it is huge to promote the use of quantities, and need the primary side line attachment of PT the time of wait interruption maintenance to implement to ring main unit transformation, and the implementation cycle is long; The 3rd, chemical energy energy storage device such as lead acid accumulator recycle number of times few, mostly need irregular maintenance, and that ring main unit is installed quantity is large, widely distributed, so the later maintenance work of power supply is heavy; The 4th, the solar energy power taking is subject to the residing geographical position of ring main unit and weather effect, and power is less and get can be unstable.Due to the shortcoming of existing power supply device, the ring main unit on-line monitoring can't be applied on a large scale.
Summary of the invention
The objective of the invention is to propose a kind of novel electric supply installation Integrated Solution, adopt super capacitor as energy storage device, CT and solar energy two-way are got can, what solve existing ring main unit on-line monitoring system supply unit used recycles that number of times is few, maintenance is large, the problems such as the large and existing ring main unit of transformation that needs to have a power failure of volume.
For solving the problems of the technologies described above, the present invention takes following technical scheme:
A kind of super capacitor-type supply unit that is applicable to ring main unit, it is characterized in that, adopt the parallel connection of two-way CT instrument transformer to respond to power taking from circuit, the CT instrument transformer is connected with the induction power supply module, the power taking of CT instrument transformer provides power supply for load after by the induction power supply resume module, charge to super capacitor simultaneously, the boost charge that described super capacitor is got energy by the solar power supply apparatus conduct simultaneously.
Described induction power supply module comprises main controllable rectifier module and the auxiliary controllable rectifier module that is connected with two-way CT instrument transformer respectively, electric current after described main controllable rectifier module and auxiliary controllable rectifier module rectification enters the electromotive force lake, and by the sampling current control main PWM conversion module of a main control unit basis to the electromotive force lake, control to the load output voltage by described main PWM conversion module, or control by described main PWM conversion module and discharge and recharge control module and charge to super capacitor.
When described CT mutual induction is got the electrical energy demands that can be not enough to holding load, keep loaded work piece by described induction power supply module controls super capacitor discharge.
Described CT instrument transformer be connected the induction power supply intermodule and connected by twin cable.
Described load comprises transducer and the communication apparatus that is arranged in ring main unit.
The present invention is from the different of existing supply unit: 1) which kind of supply power mode no matter prior art adopt, and be all the single energy pattern of getting, and energy storage device is the storage battery of chemical energy; The present invention adopts two kinds of forms of getting the energy mode combinations, i.e. induction power supply module and solar energy electricity-fetching module combination, and energy storage device is super capacitor.2) prior art also has the application of adopting the induction power taking, but electric current is little during due to the distribution line low power consumption, and the power of CT power taking this moment is little powers to transducer, communication apparatus to being not enough to, therefore can only adopt the PT power taking; The present invention adopts the mode power taking in parallel of two open type CT pincers, uses simultaneously as a supplement solar poweredly, has overcome single CT power taking too small defective of power when the circuit low power consumption, but has had advantages of simultaneously the little live line working of CT pincers power taking volume.
The beneficial effect that the present invention reaches:
Electric supply installation of the present invention is compared with the electric supply installation that the ring main unit on-line monitoring system uses, owing to having adopted the CT(pincers) power taking, need not have a power failure when in ring main unit, monitoring equipment being installed, need not transform ring main unit and greatly save workload; Adopt super capacitor as energy storage device instead of chemical energy storage device, reduced the maintenance workload of run duration, significantly improved service life of equipment.
Description of drawings
Fig. 1 is super capacitor-type solar energy ups power fundamental diagram.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.Following examples only are used for technical scheme of the present invention more clearly is described, and can not limit protection scope of the present invention with this.
As shown in Figure 1, the present invention adopts the parallel connection of two-way CT instrument transformer to respond to power taking from circuit, the CT instrument transformer is connected with the induction power supply module, the power taking of CT instrument transformer provides power supply for load after by the induction power supply resume module, charge to super capacitor simultaneously, the boost charge that super capacitor is got energy by the solar power supply apparatus conduct simultaneously.
The induction power supply module comprises main controllable rectifier module and the auxiliary controllable rectifier module that is connected with two-way CT instrument transformer respectively, electric current after main controllable rectifier module and auxiliary controllable rectifier module rectification enters the electromotive force lake, and by the sampling current control main PWM conversion module of a main control unit basis to the electromotive force lake, control to the load output voltage by main PWM conversion module, or control by main PWM conversion module and discharge and recharge control module and charge to super capacitor.
Main thought and the concrete steps of the inventive method are as follows:
Main thought is: utilize the induction power taking to transducer, communication apparatus power supply when distribution line works and is not in low power consumption, induction electricity getting device and solar power supply apparatus charge to super capacitor simultaneously; During line fault, super capacitor discharges to transducer, communication apparatus power supply.
Specific implementation is as follows:
(1) induction power taking: utilize electromagnetic induction principle, by using saturable inductor, adopt open type CT pincers to extract on cable line and respond to alternating voltage, then give transducer, communication apparatus power supply after over commutation, filtering and voltage stabilizing, provide electric energy for super capacitor simultaneously.During installation, each supply unit connects two CT, and each CT is stuck on a different circuit.
Major parameter is:
Get and to insulate by instrument transformer: 10kV;
Main output voltage: 12V ± 1%;
Wake electric current up: 10A;
Peak power output: 20W;
Merit stream ratio: 0.22;
2W load primary current: 18A;
5W load primary current: 35A;
Minimum fully loaded primary current: 105A;
Storage capacitor is withstand voltage: 15V;
Storage capacitor capacity: do not limit;
Maximum cable external diameter: 38mm.
(2) solar recharging: in the induction power taking, produce electric energy by solar energy equipment super capacitor is charged, the sun is inadequate, the rainy weather electric current is less, also can be absorbed by super capacitor to store.Super capacitor can not discharge to solar energy equipment.
The solar power supply apparatus major parameter is:
Material: polysilicon;
Model: YF-P20;
Rated power: 20W;
Size: 363*529*25(MM);
Operating voltage: 17.2V;
Operating current: 1.16A.
Super capacitor discharge: night the distribution line electric current hour, induction energy fetching is not enough to support the electrical energy demands of transducer and communication apparatus, this moment, super capacitor discharged to keep transducer and communication apparatus work.
Below in conjunction with Fig. 1, electricity super capacitor solar energy ups power work performing step is described.
Wherein, the terminal board in Fig. 1 is described as follows:
OL1: overload (current in wire is not enough) alarm output 1;
OL2: overload (current in wire is not enough) alarm output 2;
Gnd: power supply ground;
The Vo+:+24V Voltage-output, output current is not more than 1A;
C+: storage capacitor is anodal, and the electric capacity requirement of withstand voltage is not less than 15V;
C-: storage capacitor negative pole;
COM1, COM2: the main energy instrument transformer input terminal of getting;
S1, S2: auxiliary getting can the instrument transformer input terminal.
Wiring is described as follows:
Getting energy instrument transformer and induction power supply intermodule is 2.5mm by sectional area
2Twin cable connect, need not to consider current phase during connection, namely twin cable can appoint respectively be connected to get can the secondary connection post of instrument transformer on.For guaranteeing safety, getting energy transformer casing and induction power supply module housing all should reliable ground.
The specific implementation step is as follows:
1) adopt electromotive force lake technology and high-frequency isolation DC/DC converter technique, electric current in cable is responded to power taking, satisfied the safe power supply requirement in the multiple abominable situations such as high-tension current impact and load saltus step, adopt simultaneously the PWM control technology, only when requiring greater than the load power taking, current in wire charges, both extend the storage capacitor life-span, promoted again charge efficiency, and can realize the charged without impacting replacing of storage capacitor.
2) solar components can be that super capacitor directly charges in power taking in induction, even sunlight is inadequate, rainy weather makes by the electric current of solar panels too smallly, its luminous energy also can be absorbed by super capacitor and store.
3) too small when induced current, when being not enough to keep the monitoring equipment power supply, super capacitor is given the power supply of monitoring equipment automatically, to keep the normal operation of monitoring equipment.
The above is only the preferred embodiment of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the technology of the present invention principle; can also make some improvement and distortion, these improvement and distortion also should be considered as protection scope of the present invention.
Claims (5)
1. super capacitor-type supply unit that is applicable to ring main unit, it is characterized in that, adopt the parallel connection of two-way CT instrument transformer to respond to power taking from circuit, described CT instrument transformer is connected with the induction power supply module, the power taking of CT instrument transformer provides power supply for load after by described induction power supply resume module, charge to super capacitor simultaneously, the boost charge that described super capacitor is got energy by the solar power supply apparatus conduct simultaneously.
2. the super capacitor-type supply unit that is applicable to ring main unit according to claim 1, it is characterized in that, described induction power supply module comprises main controllable rectifier module and the auxiliary controllable rectifier module that is connected with two-way CT instrument transformer respectively, electric current after described main controllable rectifier module and auxiliary controllable rectifier module rectification enters the electromotive force lake, and by the sampling current control main PWM conversion module of a main control unit basis to the electromotive force lake, control to the load output voltage by described main PWM conversion module, or control by described main PWM conversion module and discharge and recharge control module and charge to super capacitor.
3. the super capacitor-type supply unit that is applicable to ring main unit according to claim 1 and 2, is characterized in that, when described CT mutual induction is got the electrical energy demands that can be not enough to holding load, keeps loaded work piece by described induction power supply module controls super capacitor discharge.
4. the super capacitor-type supply unit that is applicable to ring main unit according to claim 1 and 2, is characterized in that, described CT instrument transformer be connected the induction power supply intermodule and connected by twin cable.
5. the super capacitor-type supply unit that is applicable to ring main unit according to claim 1 and 2, is characterized in that, described load comprises transducer and the communication apparatus that is arranged in ring main unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310076135.1A CN103117587B (en) | 2013-03-11 | 2013-03-11 | A kind of super capacitor-type supply unit being applicable to looped network cabinet |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310076135.1A CN103117587B (en) | 2013-03-11 | 2013-03-11 | A kind of super capacitor-type supply unit being applicable to looped network cabinet |
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| CN103117587A true CN103117587A (en) | 2013-05-22 |
| CN103117587B CN103117587B (en) | 2016-06-08 |
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| CN201310076135.1A Active CN103117587B (en) | 2013-03-11 | 2013-03-11 | A kind of super capacitor-type supply unit being applicable to looped network cabinet |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105429287A (en) * | 2015-11-10 | 2016-03-23 | 国网北京市电力公司 | Power supply method and device of RMU monitoring device |
| CN106712285A (en) * | 2014-11-28 | 2017-05-24 | 国网浙江省电力公司湖州供电公司 | Distribution line online monitoring and acquisition terminal supporting solar energy pickup |
| CN107689688A (en) * | 2017-10-30 | 2018-02-13 | 常州工学院 | A kind of transformer power taking power supply for carrying balancing |
| CN109286235A (en) * | 2018-11-27 | 2019-01-29 | 南方电网科学研究院有限责任公司 | Power supply system of power system monitoring equipment |
| CN109861366A (en) * | 2019-04-10 | 2019-06-07 | 广东电网有限责任公司 | A kind of double CT for high-tension cable monitoring device take electric power supply unit |
| CN111555426A (en) * | 2020-05-22 | 2020-08-18 | 东北电力大学 | Comprehensive energy-taking module for monitoring overhead line of power distribution network |
| CN113890199A (en) * | 2021-09-24 | 2022-01-04 | 天津送变电工程有限公司 | Induction energy taking device based on overhead transmission line |
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| CN101697430A (en) * | 2009-11-12 | 2010-04-21 | 上海交通大学 | Power control method based CT electricity getting device of high voltage transmission line |
| CN101728876A (en) * | 2010-01-11 | 2010-06-09 | 山东康威通信技术有限公司 | Non-contact inductive electricity-getting device for electric tunnel cable |
| CN202019233U (en) * | 2011-05-10 | 2011-10-26 | 褚强 | Universal independent power supply device for photomagnetic complementary power transmission and distribution circuit on-line monitoring system |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2006230136A (en) * | 2005-02-18 | 2006-08-31 | Zephyr Corp | Power generation system |
| CN101697430A (en) * | 2009-11-12 | 2010-04-21 | 上海交通大学 | Power control method based CT electricity getting device of high voltage transmission line |
| CN101728876A (en) * | 2010-01-11 | 2010-06-09 | 山东康威通信技术有限公司 | Non-contact inductive electricity-getting device for electric tunnel cable |
| CN202019233U (en) * | 2011-05-10 | 2011-10-26 | 褚强 | Universal independent power supply device for photomagnetic complementary power transmission and distribution circuit on-line monitoring system |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106712285A (en) * | 2014-11-28 | 2017-05-24 | 国网浙江省电力公司湖州供电公司 | Distribution line online monitoring and acquisition terminal supporting solar energy pickup |
| CN106712285B (en) * | 2014-11-28 | 2019-07-30 | 国网浙江省电力公司湖州供电公司 | Solar energy is supported to take the distribution line on-line monitoring acquisition terminal of electricity |
| CN105429287A (en) * | 2015-11-10 | 2016-03-23 | 国网北京市电力公司 | Power supply method and device of RMU monitoring device |
| CN105429287B (en) * | 2015-11-10 | 2019-02-22 | 国网北京市电力公司 | The method of supplying power to and device of ring network cabinet monitoring device |
| CN107689688A (en) * | 2017-10-30 | 2018-02-13 | 常州工学院 | A kind of transformer power taking power supply for carrying balancing |
| CN109286235A (en) * | 2018-11-27 | 2019-01-29 | 南方电网科学研究院有限责任公司 | Power supply system of power system monitoring equipment |
| CN109286235B (en) * | 2018-11-27 | 2023-08-22 | 南方电网科学研究院有限责任公司 | Power supply system of power system monitoring equipment |
| CN109861366A (en) * | 2019-04-10 | 2019-06-07 | 广东电网有限责任公司 | A kind of double CT for high-tension cable monitoring device take electric power supply unit |
| CN111555426A (en) * | 2020-05-22 | 2020-08-18 | 东北电力大学 | Comprehensive energy-taking module for monitoring overhead line of power distribution network |
| CN113890199A (en) * | 2021-09-24 | 2022-01-04 | 天津送变电工程有限公司 | Induction energy taking device based on overhead transmission line |
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| CN103117587B (en) | 2016-06-08 |
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