CN202083734U - Device for on-line detection of electric leakage for porcelain insulator - Google Patents
Device for on-line detection of electric leakage for porcelain insulator Download PDFInfo
- Publication number
- CN202083734U CN202083734U CN201120068478XU CN201120068478U CN202083734U CN 202083734 U CN202083734 U CN 202083734U CN 201120068478X U CN201120068478X U CN 201120068478XU CN 201120068478 U CN201120068478 U CN 201120068478U CN 202083734 U CN202083734 U CN 202083734U
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- voltage
- electric leakage
- porcelain insulator
- alarm
- bus
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Abstract
The utility model relates to an electric leakage device for porcelain insulators, especially relates to a device for on-line detection of electric leakage for porcelain insulators, and aims to solve a technical problem that on-line detection of electric leakage can not be provided for conventional porcelain insulators. The technical scheme of the utility model is that the high-voltage bus porcelain insulators of the device are fixedly provided with high-voltage sensors; induction voltages generated by each porcelain insulator high-voltage sensor are connected in a parallel manner and then are connected with a rectifier; 24V direct current voltage is output after the rectification of the induction voltages; a voltmeter is connected with the output end of the rectifier in a parallel manner; for instant alarm, a voltage relay is connected with the voltmeter in a parallel manner, and the normal open contact of the voltage relay is connected with an alarm loop; in the alarm loop, the normal open contact of the voltage relay is connected with an alarming buzzer in a series manner, an electrified monitoring loop is connected with the alarm loop in a parallel manner; and the power supply of the alarm loop is a 220V alternating current, which is the alternating current power supply obtained from a high-voltage switch cabinet. The device of the utility model helps to realize the on-line monitoring for the bus porcelain insulators.
Description
Technical field
The utility model relates to a kind of electric leakage device of porcelain insulator, particularly a kind of device of online detection porcelain insulator electric leakage.
Background technology
The bus insulation especially insulation of high voltage bus directly influences the stable operation of electric power system or station service electrical system, so judges promptly and accurately that in the bus operational process porcelain insulator situation of bus is the necessary condition that guarantees electric power system stable operation.In today that production scale enlarges day by day, high voltage bus becomes the visual plant of station service electrical system, because station service electrical system is important mostly and system is comparatively complicated, therefore the bus that electric pressure is high more is owing to need change the method for operation when stopping using as a servant, so seldom stop labour, but because the influence of factors such as environment, service time, the porcelain insulator of bus can occur committing incest with one's daughter-in-law even aging phenomenon, if can not in time find to cause the most at last the major accident of busbar grounding even short circuit.But present detection means can only be under the situation that bus stops using as a servant, judge the situation of bus insulation porcelain vase by measuring insulation and pressure test, but withstand voltage test is destructive test, itself will influence insulation, and all need by stopping using as a servant the purpose that bus just can reach detection, and can't detect the process of bus insulation porcelain vase deterioration, therefore often incur loss through delay the best repair time easily, in case the safe and stable operation that ground connection or short trouble will influence whole station service electrical system takes place.
Summary of the invention
The purpose of this utility model provides a kind of device of online detection porcelain insulator electric leakage, mainly solves the technical matters that existing porcelain insulator can't online detection electric leakage.
Technical thought of the present utility model is in certain section high voltage bus porcelain insulator high pressure sensor to be installed, measure its induced voltage, at porcelain insulator just often, the induced voltage of generation is a certain numerical value, when some porcelain insulators cause insulation to reduce because of creepage or self reason, induced voltage will change, by measurement, judgement, design a loop, when voltage changes to induced voltage, can report to the police in this loop, thereby in time grasp the insulation situation of bus.
The technical solution of the utility model is: a kind of device of online detection porcelain insulator electric leakage, high voltage bus porcelain insulator stiff end is equipped with high pressure sensor, connect rectifier after the induced voltage parallel connection that each porcelain vase high pressure sensor produces, induced voltage is exported the DC voltage of 24V behind overcommutation, voltage table also connects rectifier output end; Be the energy instant alarming, voltage relay is in parallel with voltage table, and the voltage relay normal opened contact inserts alarm circuit.The voltage relay normal opened contact is connected with alarm buzzer in the described alarm circuit, and the electric monitoring circuit alarm circuit that inserts in parallel is arranged, and the alarm circuit power supply is the 220V alternating current, takes to exchange mains lighting supply in the high-tension switch cabinet.
When porcelain insulator reduced, the induced voltage of high pressure sensor will raise, and the DC voltage by rectifier also will raise, when reaching the voltage relay working value, the voltage relay action, the action of voltage relay normal opened contact, this moment, alarm buzzer sent warning; Also can pass through voltage table at ordinary times, induced voltage is monitored.
The beneficial effects of the utility model are: utilize the induced voltage that produces on the high pressure sensor, the DC voltage of output 24V after rectification, the situation of change that will insulate converts change in voltage to, utilize voltage relay whether to move and judge its insulation situation, and by contact driving buzzer warning, can judge concentrating after the induced voltage parallel connection of all porcelain vases on the bus, judge the loop for shared one, pass through voltage table, as long as voltage has change, can both in time find, make operating maintenance personnel grasp situation in time handle, improve the bus reliability of operation.
Description of drawings
Fig. 1: be the utility model circuit diagram
Fig. 2: be the utility model rectification circuit
Among the figure: 1-high pressure sensor, 2-rectifier, 3-voltage table, 4-voltage relay, 5-have electric monitoring circuit, 6-voltage relay normal opened contact, 7-alarm buzzer, 8-high voltage bus porcelain insulator, 9-light emitting diode.
Embodiment
With reference to Fig. 1, a kind of device of online detection porcelain insulator electric leakage, high voltage bus porcelain insulator 8 stiff ends are equipped with high pressure sensor (model C G3, mutual inductance device factory, the sky and water) 1, connect rectifier 2 after the induced voltage parallel connection of each high voltage bus porcelain insulator 8 by high pressure sensor 1 generation, induced voltage is exported the DC voltage of 24V behind overcommutation, voltage table 3 also connects rectifier 2 output terminals; Rectification circuit is the energy instant alarming referring to Fig. 2, and voltage relay (model JZC-33F, 24V, just safe electric group) 4 is in parallel with voltage table 3, and voltage relay normal opened contact 6 inserts alarm circuits.Voltage relay normal opened contact 6 is connected with alarm buzzer 7 in the described alarm circuit, electric monitoring circuit 5 alarm circuits that insert in parallel are arranged, have electric monitoring circuit to be in series by resistance and light emitting diode 9, the alarm circuit power supply is taken from and is exchanged mains lighting supply (220VAC) in the high-tension switch cabinet.
This moment, voltage relay 4 was failure to actuate, and when certain high voltage bus porcelain insulator insulate when bad, induced voltage raises, voltage relay 4 actions, and voltage relay normal opened contact 6 junction closures drive alarm circuit, send warning.When AC power has electricity, there is the light emitting diode 9 of electric monitoring circuit 5 bright, illustrate that the loop can start working.Just often, induced voltage is monitored by voltage table 3.
Use this device to carry out in-service monitoring to the bus insulation porcelain vase, can reflect in time that also for maintenance provides foundation, whole circuit connection is simple in case find the situation that insulation reduces, expense is cheap, and is easy for installation, easy to use, helps penetration and promotion.
Claims (3)
1. the device of an online detection porcelain insulator electric leakage, it is characterized in that: high voltage bus porcelain insulator stiff end is equipped with high pressure sensor, connect rectifier after the induced voltage parallel connection that each porcelain vase high pressure sensor produces, induced voltage is exported the DC voltage of 24V behind overcommutation, voltage table also connects rectifier output end.
2. the device of a kind of online detection porcelain insulator electric leakage according to claim 1, it is characterized in that: it is in parallel with voltage table to set up voltage relay, and the voltage relay normal opened contact inserts alarm circuit.
3. the device of a kind of online detection porcelain insulator electric leakage according to claim 2, it is characterized in that: the voltage relay normal opened contact is connected with alarm buzzer in the described alarm circuit, the electric monitoring circuit alarm circuit that inserts in parallel is arranged, and the alarm circuit power supply is the 220V alternating current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120068478XU CN202083734U (en) | 2011-03-11 | 2011-03-11 | Device for on-line detection of electric leakage for porcelain insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120068478XU CN202083734U (en) | 2011-03-11 | 2011-03-11 | Device for on-line detection of electric leakage for porcelain insulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202083734U true CN202083734U (en) | 2011-12-21 |
Family
ID=45344360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120068478XU Expired - Fee Related CN202083734U (en) | 2011-03-11 | 2011-03-11 | Device for on-line detection of electric leakage for porcelain insulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202083734U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102830273A (en) * | 2012-08-23 | 2012-12-19 | 徐州云泰汽车电器有限公司 | Early warning device for fault of rectifier |
| CN103197127A (en) * | 2013-04-10 | 2013-07-10 | 国家电网公司 | Grounding step voltage detecting method and grounding step voltage detecting device of high-voltage equipment of switch gear room of converting station |
-
2011
- 2011-03-11 CN CN201120068478XU patent/CN202083734U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102830273A (en) * | 2012-08-23 | 2012-12-19 | 徐州云泰汽车电器有限公司 | Early warning device for fault of rectifier |
| CN103197127A (en) * | 2013-04-10 | 2013-07-10 | 国家电网公司 | Grounding step voltage detecting method and grounding step voltage detecting device of high-voltage equipment of switch gear room of converting station |
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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: 20111221 Termination date: 20190311 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |