CN201126974Y - Wireless power supply for zinc oxide lightning arrester leakage current monitoring system - Google Patents
Wireless power supply for zinc oxide lightning arrester leakage current monitoring system Download PDFInfo
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- CN201126974Y CN201126974Y CNU2007201987302U CN200720198730U CN201126974Y CN 201126974 Y CN201126974 Y CN 201126974Y CN U2007201987302 U CNU2007201987302 U CN U2007201987302U CN 200720198730 U CN200720198730 U CN 200720198730U CN 201126974 Y CN201126974 Y CN 201126974Y
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Abstract
The utility model relates to a power supply system for online arrester leakage current monitoring system, especially a trickle charge and supply device of monitoring system for leakage current in zinc oxide arrester. The trickle charge and supply system can be used for supplying power to detection circuit of a detector connected with the arrestor, characterized in that it comprises a trickle charging circuit connected with the detection circuit, the trickle charging circuit uses the arrestor as power supply for charging and power storing in order to supply power to the detector. By using the technical scheme, the utility model can effectively solve problem of continuous power supply for arrestor monitoring system in existing high voltage grid as the realization of online remote arrestor detection.
Description
Technical field
The utility model relates to the electric power system of lightning arrester leakage current on-line monitoring system, particularly the trickle charge electric supply installation of Leakage Current of Zinc-oxide Lightning Arresters surveillance.
Background technology
In high-voltage fence, zinc oxide arrester is a kind of protection equipment that the protection electric equipment is avoided the overvoltage infringement.Think at present more effectively can faster, correctly reflect that the method for measurement of zinc oxide arrester internal soundness problem is to measure the resistive component of lightning arrester, abbreviate the current in resistance property diagnostic method as.The monitoring method of existing leakage current of an arrester is the mode that relies on artificial on-the-spot poll, reaction speed is slower, accuracy in detection is relatively poor, and therefore the supervision of leakage current of an arrester needs a kind of new method in high-voltage web system, as utilizes the automatic remote method for monitoring of bus and network technology.But because the enforcement of these automatic remote method for monitoring need be stablized lasting power supply supply, and high-voltage fence can't allow the enforcement of conventional electric power system down, and therefore solving electric power system is to realize the precondition of automatic remote method for monitoring.
The utility model content
The purpose of this utility model is to solve the continued power problem of lightning arrester surveillance under the above-mentioned high-voltage fence, and a kind of trickle charge electric supply installation of Leakage Current of Zinc-oxide Lightning Arresters surveillance is provided.
Realize that the utility model purpose technical scheme is: a kind of trickle charge electric supply installation of Leakage Current of Zinc-oxide Lightning Arresters surveillance, be used for testing circuit power supply to the detector that is connected with lightning arrester, it is characterized in that, it comprises the trickle charging circuit that is connected with described testing circuit, this trickle charging circuit utilizes described lightning arrester to do the power supply charging and carries out electrical power storage, is described detector power supply.
Further, the trickle charge electric supply installation of above-mentioned Leakage Current of Zinc-oxide Lightning Arresters surveillance also comprises rechargeable lithium battary, discharge detection circuit and commutation circuit, wherein,
Described lithium battery is connected with described trickle charging circuit, is used for store electrical energy;
Described discharge detection circuit is connected the count detection that is used to discharge with described trickle charging circuit;
Described commutation circuit, be connected between described trickle charging circuit and the described testing circuit, and be connected with lithium battery, the electric energy of described lithium battery is used for described discharge detection circuit power supply, and is used for when described testing circuit is not worked the electric energy of described storage capacitor is switched to described lithium battery.
Further, described trickle charging circuit uses the constant current source charging circuit.
Further, described trickle charging circuit charging is to liking big capacity storage capacitor.
Further, described commutation circuit is made up of field effect transistor.
Further, described constant current source charging circuit adopts amplifier and field effect transistor to form.
Further, it can use separately or be shared with other available electric power systems.
Further, described each leakage current of an arrester on-line detector in transformer station adopts the power supply of trickle charge electric power system one to one separately.
Owing to adopted above-mentioned technical solution, solved the continued power problem of lightning arrester surveillance under the present high-voltage fence fully, the online remote detection of lightning arrester is become a reality.
Description of drawings
Fig. 1 is the trickle charge electric supply installation schematic diagram of the utility model Leakage Current of Zinc-oxide Lightning Arresters surveillance.
Embodiment
The utility model is described in further detail below in conjunction with drawings and embodiments.
With reference to figure 1, a kind of trickle charge electric supply installation of Leakage Current of Zinc-oxide Lightning Arresters surveillance, be used for testing circuit 2 power supplies to the detector that is connected with lightning arrester, wherein, it comprises the trickle charging circuit 1 that is connected with described testing circuit, this trickle charging circuit 1 utilizes described lightning arrester 6 to do the power supply charging and carries out electrical power storage, is described detector 5 power supplies.
The trickle charge electric supply installation of above-mentioned Leakage Current of Zinc-oxide Lightning Arresters surveillance also comprises rechargeable lithium battary 7, discharge detection circuit 4 and commutation circuit 3, wherein,
Described lithium battery 7 is connected with described trickle charging circuit, is used for store electrical energy;
Described discharge detection circuit 4 is connected the count detection that is used to discharge with described trickle charging circuit;
Described commutation circuit 3, be connected between described trickle charging circuit and the described testing circuit, and be connected with lithium battery, the electric energy of described lithium battery is used for described discharge detection circuit power supply, and is used for when described testing circuit is not worked the electric energy of described storage capacitor is switched to described lithium battery.
Above-mentioned trickle charging circuit uses the constant current source charging circuit.Above-mentioned trickle charging circuit charging is to liking big capacity storage capacitor.
Above-mentioned commutation circuit 3 is made up of field effect transistor.
Above-mentioned constant current source charging circuit adopts amplifier and field effect transistor to form.
The trickle charge electric supply installation of above-mentioned Leakage Current of Zinc-oxide Lightning Arresters surveillance, it can use separately or be shared with other available electric power systems.
Above-mentioned each leakage current of an arrester on-line detector in transformer station adopts the power supply of trickle charge electric power system one to one separately.
Remove the AC power part in each detector, increase the trickle capacitor charging circuit, storage capacitance provides the consumed power of the instantaneous 0.5W of detector by charging modes accumulative total.
With reference to figure 1, the work of whole detector is in low-power consumption at intermittence mode.Lightning arrester 6 is equivalent to the constant-current source of a 0.5mA.Utilize this constant-current source that electric capacity is charged, by the time energy has reached and has guaranteed detector 5 after 10 seconds of consumed power work with 0.5W, and the open detection instrument carries out online testing, records the lightning arrester storage and shows.Also will utilize this constant-current source to lithium battery 7 chargings simultaneously, the electric energy of this part battery is to be used for to discharge counting circuit supply, and this part circuit only needs the operating current of 0.5mA when the work of discharge counting, and all the other times only need the operating current of 1uA.
The calculating of discontinuous operation time is that the hypothesis constant-current source is linear power supply, amount of power supply Q1=C1*I1*T1 (formula is 1.), and wherein C1 is capacitance 3300u, and I1 is charging current value 0.5mA, and T1 is the charging interval.Power consumption Q2=0.5*T2 (formula 2.) intermittently, the T2 electricity consumption time was 10 seconds.The harshest low-power consumption at intermittence mode be formula 1.＞formula 2., T1 is set at 1 hour.Promptly per hour detector work is once.
Trickle charging circuit in the leakage current of an arrester in-service monitoring instrument as shown in Figure 1 adopts amplifier and field effect transistor to form the constant current source charging circuit.Commutation circuit 3 in the leakage current of an arrester in-service monitoring instrument is made up of field effect transistor.Storage capacitor is the electrochemical capacitor of 1F.Lithium battery 7 is the lithium battery of 19AH.
Above embodiment is only for the usefulness that the utility model is described, but not to restriction of the present utility model, person skilled in the relevant technique, under the situation that does not break away from spirit and scope of the present utility model, can also make various conversion or modification, therefore all technical schemes that are equal to also should belong to category of the present utility model, should be limited by each claim.
Claims (8)
1, a kind of trickle charge electric supply installation of Leakage Current of Zinc-oxide Lightning Arresters surveillance, be used for testing circuit power supply to the detector that is connected with lightning arrester, it is characterized in that, it comprises the trickle charging circuit that is connected with described testing circuit, this trickle charging circuit utilizes described lightning arrester to do the power supply charging and carries out electrical power storage, is described detector power supply.
2, the trickle charge electric supply installation of Leakage Current of Zinc-oxide Lightning Arresters surveillance as claimed in claim 1 is characterized in that, also comprises rechargeable lithium battary, discharge detection circuit and commutation circuit, wherein,
Described lithium battery is connected with described trickle charging circuit, is used for store electrical energy;
Described discharge detection circuit is connected the count detection that is used to discharge with described trickle charging circuit;
Described commutation circuit, be connected between described trickle charging circuit and the described testing circuit, and be connected with lithium battery, the electric energy of described lithium battery is used for described discharge detection circuit power supply, and is used for when described testing circuit is not worked the electric energy of described storage capacitor is switched to described lithium battery.
3, the trickle charge electric supply installation of Leakage Current of Zinc-oxide Lightning Arresters surveillance as claimed in claim 1 is characterized in that, described trickle charging circuit uses the constant current source charging circuit.
4, the trickle charge electric supply installation of Leakage Current of Zinc-oxide Lightning Arresters surveillance as claimed in claim 1 is characterized in that, described trickle charging circuit charging is to liking big capacity storage capacitor.
5, the trickle charge electric supply installation of Leakage Current of Zinc-oxide Lightning Arresters surveillance as claimed in claim 2 is characterized in that, described commutation circuit is made up of field effect transistor.
6, the trickle charge electric supply installation of Leakage Current of Zinc-oxide Lightning Arresters surveillance as claimed in claim 3 is characterized in that, described constant current source charging circuit adopts amplifier and field effect transistor to form.
7, the trickle charge electric supply installation of Leakage Current of Zinc-oxide Lightning Arresters surveillance as claimed in claim 1 is characterized in that, it can use separately or be shared with other available electric power systems.
8, the trickle charge electric supply installation of Leakage Current of Zinc-oxide Lightning Arresters surveillance as claimed in claim 1, it is characterized in that described each leakage current of an arrester on-line detector in transformer station adopts the power supply of trickle charge electric power system one to one separately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201987302U CN201126974Y (en) | 2007-11-30 | 2007-11-30 | Wireless power supply for zinc oxide lightning arrester leakage current monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201987302U CN201126974Y (en) | 2007-11-30 | 2007-11-30 | Wireless power supply for zinc oxide lightning arrester leakage current monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201126974Y true CN201126974Y (en) | 2008-10-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201987302U Expired - Fee Related CN201126974Y (en) | 2007-11-30 | 2007-11-30 | Wireless power supply for zinc oxide lightning arrester leakage current monitoring system |
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| CN (1) | CN201126974Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323508A (en) * | 2011-09-20 | 2012-01-18 | 河海大学常州校区 | Performance online detection device of induction type oxide arrester |
| CN103558493A (en) * | 2013-11-02 | 2014-02-05 | 国家电网公司 | Extra-high voltage zinc oxide arrester leakage current measurement device and method |
-
2007
- 2007-11-30 CN CNU2007201987302U patent/CN201126974Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323508A (en) * | 2011-09-20 | 2012-01-18 | 河海大学常州校区 | Performance online detection device of induction type oxide arrester |
| CN103558493A (en) * | 2013-11-02 | 2014-02-05 | 国家电网公司 | Extra-high voltage zinc oxide arrester leakage current measurement device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081001 Termination date: 20151130 |
|
| EXPY | Termination of patent right or utility model |