CN204044232U - A kind of high voltage display device by monitoring leakage current of an arrester - Google Patents
A kind of high voltage display device by monitoring leakage current of an arrester Download PDFInfo
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- CN204044232U CN204044232U CN201420480761.7U CN201420480761U CN204044232U CN 204044232 U CN204044232 U CN 204044232U CN 201420480761 U CN201420480761 U CN 201420480761U CN 204044232 U CN204044232 U CN 204044232U
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- leakage current
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- latch actuation
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 abstract description 5
- 238000013461 design Methods 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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Abstract
The utility model discloses a kind of high voltage display device by monitoring leakage current of an arrester, it relates to power high voltage equipment electrical property detection technique field, LED indicates the input end of driving circuit to be connected with three-phase signal source, LED indicates the output terminal of driving circuit to be connected with the input end of latch actuation circuit, and the output terminal of latch actuation circuit is connected with electromagnetic lock interface and microcomputer anti-error computer key interface respectively.Its reasonable in design, the leakage current situation of lightning arrester can be grasped at any time, its charged or not charging operation time leakage current have corresponding change and reference value, according to this characteristic, when leakage current is higher or lower than certain threshold values set, export corresponding quantity of information, realize the object that whether display high-tension apparatus is charged in real time, do not affect original lightning arrester operational mode, and it can realize charged installation, fast response time, reliable, daily servicing amount is little, has considerable economic benefit and social benefit.
Description
technical field:
The utility model relates to a kind of high voltage display device by monitoring leakage current of an arrester, belongs to power high voltage equipment electrical property detection technique field.
background technology:
Along with social development, electric power plays irreplaceable effect in human being's production, life, therefore, ensures that safe, stable also the becoming of substation operation equipment is even more important.When high voltage electric equipment (circuit) needs to carry out operating and overhauling, staff needs to know whether high-tension apparatus (circuit) has a power failure, to start maintenance.For this reason, the appearance of HV live displaying, it by with error-proof device interface after, whether charged information is included in anti-error Logic judgment and forced blocking, thus effectively prevents misoperation fault.
Existing conventional high-pressure charged display device need have a power failure installation and maintenance in the market, cannot meet electric system production requirement, therefore a kind of high voltage display device not needing power failure installation and maintenance is proposed, it, by the method for the size of the leakage current values of the lightning arrester of installation in monitoring station, judges the device whether high-tension apparatus (circuit) is charged.
utility model content:
For the problems referred to above, the utility model provides a kind of reasonable in design, can grasp the leakage current situation of lightning arrester at any time, by monitoring the high voltage display device of leakage current of an arrester.
This display device comprises LED and indicates driving circuit, latch actuation circuit, electromagnetic lock interface, microcomputer anti-error computer key interface and three-phase signal source, LED indicates the input end of driving circuit to be connected with three-phase signal source, LED indicates the output terminal of driving circuit to be connected with the input end of latch actuation circuit, and the output terminal of latch actuation circuit is connected with electromagnetic lock interface and microcomputer anti-error computer key interface respectively.
As preferably, LED indicates driving circuit to comprise main control MCU, LED drive circuit and LED display circuit, main control MCU inside is containing AD conversion module, main control MCU is connected with latch actuation circuit by digital I/O port, latch actuation circuit be embodied as coil form relay, relay often open node as output, be connected with the idle contact interface of electromagnetic lock interface and microcomputer anti-error computer key.
As preferably, three-phase signal source sends three-phase voltage signal is input to MCU inside AD conversion module by the Simulation with I O mouth of MCU, realize the collection to three-phase voltage signal, store, computation and analysis, then indicate driving circuit to drive by digital I/O port to LED, realize the object of lamplight pointing.
The beneficial effects of the utility model:
(1) the utility model overcomes the drawback of prior art, reasonable in design, can grasp the leakage current situation of lightning arrester at any time, when leakage current is higher or lower than certain threshold values set, export corresponding quantity of information, realize showing the whether charged object of high-tension apparatus (circuit) in real time.
(2) the utility model does not affect original lightning arrester method of operation, and can realize charged installation and maintenance, fast response time, reliable, and daily servicing amount is little, has considerable economic benefit and social benefit.
accompanying drawing illustrates:
For ease of illustrating, the utility model is described in detail by following concrete enforcement and accompanying drawing.
Fig. 1 is the utility model structural representation;
Fig. 2 is that the utility model LED indicates driving circuit structure schematic diagram.
1-LED indicates driving circuit; 2-latch actuation circuit; 3-electromagnetic lock interface; 4-microcomputer anti-error computer key interface; 5-three-phase signal source; 1-1 main control MCU; 1-2LED driving circuit; 1-3LED display circuit.
embodiment:
As shown in Figure 1, this embodiment by the following technical solutions: it comprises LED and indicates driving circuit 1, latch actuation circuit 2; Electromagnetic lock interface 3; Microcomputer anti-error computer key interface 4; Three-phase signal source 5; LED indicates the input end of driving circuit 1 to be connected with three-phase signal source 5, and LED indicates the output terminal of driving circuit 1 to be connected with the input end of latch actuation circuit 2, and the output terminal of latch actuation circuit 2 is connected with electromagnetic lock interface 3 and microcomputer anti-error brain key interface 4 respectively.
LED indicates driving circuit 1 to comprise main control MCU 1-1, LED drive circuit 1-2 and LED display circuit 1-3, main control MCU 1-1 inside is containing AD conversion module, main control MCU 1-1 is connected with latch actuation circuit 2 by digital I/O port, latch actuation circuit 2 be embodied as coil form relay, relay often open node as output, be connected with the idle contact interface 4 of electromagnetic lock interface 3 and microcomputer anti-error computer key.As shown in Figure 2, the utility model adopts Universal LED driver LT3598 to indicate the core component of driving circuit 1 as LED, and LT3598 adopts fixed frequency, peak-current mode control program, has outstanding circuit and load regulation ability.Its inner 6 current sources provide 6 passages, can drive 6 string LED, often string nearly 10 white light LEDs, often going here and there drive current can up to 30mA, efficiency can reach 90 %, and can ensure often to go here and there a current precision within 115 %, and to guarantee often to go here and there, LED brightness is consistent.Built-in boosting type converter uses a self-adaptation feedback control loop to carry out regulation output voltage to slightly higher than required LED voltage, to guarantee top efficiency.Having there is open circuit in arbitrary LED string, does not affect it and normally work, and LT3589 can continue to regulate existing LED go here and there and send alerting signal to OPENLED pin.
The CTRL pin voltage of LT3598 just can be used to adjustment LED crosstalk stream and realizes light modulation, and when this pin voltage changes to 1V from 0V, LED crosstalk stream will rise to the maximum current of setting from 0, is set as 20mA in this example.
Single-chip microcomputer by D A voltage output be connected with the CTRL pin of LT3598, control LED brightness, reaches warning function.
Main control MCU 1-1 gathers three-phase signal source 5 leakage current signal, three-phase signal source 5 by cross-core type sensor to A, B, the current signal of C three-phase lightning protector downlead samples, first realize I/V conversion by amplifier, current signal is transformed into voltage signal, then the voltage signal after conversion is amplified and filtering, then three-phase voltage signal is outputted to LED and indicate driving circuit 1-2.When three-phase signal source 5 leakage current signal is higher than certain safe threshold, control latch actuation circuit 2 exports often opens node, and control LED indicates driving circuit 1-2 to light corresponding LED simultaneously, and instruction high voltage bus is in electriferous state; When leakage current of an arrester signal is lower than certain safe threshold, controls latch actuation circuit 2 and export normally closed node, control LED indicates driving circuit 1 to light corresponding LED simultaneously, and instruction high voltage bus is in power down mode.
Claims (2)
1. the high voltage display device by monitoring leakage current of an arrester, it is characterized in that: described display device comprises LED and indicates driving circuit (1), latch actuation circuit (2), electromagnetic lock interface (3), microcomputer anti-error computer key interface (4) and three-phase signal source (5), LED indicates the input end of driving circuit (1) to be connected with three-phase signal source (5), LED indicates the output terminal of driving circuit (1) to be connected with the input end of latch actuation circuit (2), the output terminal of latch actuation circuit (2) is connected with electromagnetic lock interface (3) and microcomputer anti-error computer key interface (4) respectively.
2. a kind of high voltage display device by monitoring leakage current of an arrester according to claim 1, it is characterized in that: described LED indicates driving circuit (1) to comprise main control MCU (1-1), LED drive circuit (1-2) and LED display circuit (1-3), main control MCU (1-1) inside is containing AD conversion module, main control MCU (1-1) is connected with latch actuation circuit (2) by digital I/O port, latch actuation circuit (2) be embodied as coil form relay, relay often open node as output, be connected with the idle contact interface (4) of electromagnetic lock interface (3) and microcomputer anti-error computer key.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420480761.7U CN204044232U (en) | 2014-08-25 | 2014-08-25 | A kind of high voltage display device by monitoring leakage current of an arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420480761.7U CN204044232U (en) | 2014-08-25 | 2014-08-25 | A kind of high voltage display device by monitoring leakage current of an arrester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204044232U true CN204044232U (en) | 2014-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420480761.7U Expired - Lifetime CN204044232U (en) | 2014-08-25 | 2014-08-25 | A kind of high voltage display device by monitoring leakage current of an arrester |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105044442A (en) * | 2015-08-03 | 2015-11-11 | 国网浙江省电力公司台州供电公司 | High-voltage live detection device |
| CN105116203A (en) * | 2015-08-10 | 2015-12-02 | 国网浙江省电力公司湖州供电公司 | High-voltage presence indication device through monitoring leakage current of high voltage equipment |
| CN105201297A (en) * | 2015-08-10 | 2015-12-30 | 国网浙江省电力公司湖州供电公司 | Anti-misoperation device of electromagnetic lock by monitoring leakage current of arrester |
| CN105738688A (en) * | 2016-05-09 | 2016-07-06 | 国网浙江省电力公司杭州供电公司 | Electrical inspection and locking device based on leakage current of high voltage equipment |
-
2014
- 2014-08-25 CN CN201420480761.7U patent/CN204044232U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105044442A (en) * | 2015-08-03 | 2015-11-11 | 国网浙江省电力公司台州供电公司 | High-voltage live detection device |
| CN105116203A (en) * | 2015-08-10 | 2015-12-02 | 国网浙江省电力公司湖州供电公司 | High-voltage presence indication device through monitoring leakage current of high voltage equipment |
| CN105201297A (en) * | 2015-08-10 | 2015-12-30 | 国网浙江省电力公司湖州供电公司 | Anti-misoperation device of electromagnetic lock by monitoring leakage current of arrester |
| CN105738688A (en) * | 2016-05-09 | 2016-07-06 | 国网浙江省电力公司杭州供电公司 | Electrical inspection and locking device based on leakage current of high voltage equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wu Jian Inventor after: Qian Ping Inventor after: Xu Xin Inventor after: Xu Kai Inventor after: Xi Yujia Inventor after: Gui Yu Inventor after: Wang Di Inventor before: Wen Feng |
|
| COR | Change of bibliographic data | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160812 Address after: 313000 Huzhou economic and Technological Development Zone, Zhejiang, Phoenix Road, No. 777, No. Patentee after: HUZHOU POWER SUPPLY COMPANY OF STATE GRID ZHEJIANG ELECTRIC POWER Co. Patentee after: State Grid Corporation of China Address before: Hubei street 430070 city of Wuhan province Hongshan District Luoshi Road No. 3 building 203 room 114 Patentee before: WUHAN GONGCHUANG FUAN TECHNOLOGY CO.,LTD. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141224 |