CN201066378Y - Online monitoring device for power line insulation - Google Patents
Online monitoring device for power line insulation Download PDFInfo
- Publication number
- CN201066378Y CN201066378Y CNU2007200866141U CN200720086614U CN201066378Y CN 201066378 Y CN201066378 Y CN 201066378Y CN U2007200866141 U CNU2007200866141 U CN U2007200866141U CN 200720086614 U CN200720086614 U CN 200720086614U CN 201066378 Y CN201066378 Y CN 201066378Y
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- line
- sequence current
- bus
- electric
- monitoring device
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- Expired - Fee Related
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Abstract
The utility model provides an on-line insulation-monitoring device of power lines. A zero-sequence current transformer and a bus-bar potential transformer which are installed on each power line are connected together in parallel and connected with an industrial computer, and the analyzed and processed signal is connected with a monitor, an electric bell and an electric siren via the line. Based on the deviation trendline of the bus-bar zero-sequence voltage, the utility model monitors the insulation level of power line equipment, the zero-sequence current transformer installed on each line is used as a sensor, after the line is grounded, a computer monitor displays the name, serial number and grounding phase of the grounded line, an acoustic accident signal is emitted, moreover, the utility model has the functions of electric energy quality monitoring and automatic waveform record, sensitivity is high and adjustability is good.
Description
Technical field
The utility model relates to a kind of monitoring device that is used for power circuit, a kind of specifically power circuit insulation line monitoring device.
Background technology
Present 6-60KV electrical network generally adopts the not directly grounded small current neutral grounding system of neutral point, and circuit is in operation for various reasons, can produce a lot of faults, and in pole line is main cable joint line, the failure rate that circuit occurs is the highest, particularly the fault that causes because of degradation reason under insulating is the most outstanding, how to monitor that by the residual voltage that monitors bus the insulation of operation of power networks equipment is one and is very difficult to the effectively problem of solution.
Summary of the invention
The purpose of this utility model is that the state of insulation that solves the electric equipment in the operation of power networks effectively monitors, and by the collection and the analyzing and processing of related data, and sends and shows and prompting.
In order to reach above-mentioned technical purpose, the utility model comprises the bus-bar potential transformer that is used for the electronics zero-sequence transformer that zero-sequence current is gathered and is used for voltage data is gathered and industrial computer that image data is handled and display, electric bell, electric whistle.In technical scheme: parallel connection is connected industrial computer by signal cable with bus-bar potential transformer to be installed on the zero sequence current mutual inductor of each circuit, and the signal via line after the analyzing and processing connects display and electric bell, electric whistle.Title, numbering and ground connection through the display fault ground path are separate, and send the sound equipment cue by electric bell and electric whistle.
Be connected by the variable rate data capture card between described zero sequence current mutual inductor and bus-bar potential transformer and the industrial computer and communicate.
Be connected by gate circuit between described industrial computer and display, electric bell, the electric whistle and constitute the loop.
Described circuit also is provided with a communication and signaling interface.Can connect external conversation and send signal and inform by communication and signaling interface, so that timely handling failure.
The utility model is owing to adopt electronics zero sequence current mutual inductor and bus-bar potential transformer that online circuit is monitored, and after handling, the industrial computer high speed analysis sends demonstration and prompting by display and electric bell, automatically monitoring completely, fault is got and manage processing, simultaneously owing to adopt the electronics zero sequence current mutual inductor to be configured, highly sensitive, adjustability good.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Accompanying drawing is the utility model circuit side connector frame synoptic diagram.
Among the figure: 1, electronics zero sequence current mutual inductor, 2, bus-bar potential transformer, 3, high-speed data acquisition card, 4, industrial computer, 5, electric bell, 6, electric whistle, 7, display, 8, communication and signaling interface, 9, signal cable, 10, gate circuit.
Embodiment
In the accompanying drawing shown in connection side's block diagram: the zero sequence current mutual inductor 1 that is installed on each circuit and bus-bar potential transformer 2 are in parallel to be connected industrial computer 4 by signal cable 9, signal via line connection display 7 after the analyzing and processing and electric bell 5, electric whistle 6, be connected by variable rate data capture card 3 between zero sequence current mutual inductor 1 and bus-bar potential transformer 2 and the industrial computer 4 and communicate, be connected by gate circuit 10 between industrial computer 4 and display 7, electric bell 5, the electric whistle 6 and constitute the loop.Circuit 10 also is provided with a communication and signaling interface 8.
In the present embodiment: described electronics zero sequence current mutual inductor 1 can be installed on each bar circuit, zero-sequence current after the online line-to-ground is gathered, bus-bar potential transformer 2 can be gathered the voltage data of online circuit, both connect display 7 title with fault ground circuit by gate circuit 10 by signal cable 9 with signal collected after high-speed data acquisition card 3 is sent into 4 pairs of data of industrial computer to carry out analyzing and processing, numbering and ground connection are separate carries out literal and alphabetical the demonstration, and demonstrate fault waveform, the electric bell 5 and the electric whistle 6 that are connected simultaneously send the accident signal signal, inform the operator on duty, the operator on duty can notify the related personnel that line fault is in time handled by communication and signaling interface 8.
During user mode, when line insulation decline, bus imbalance of three-phase voltage degree surpasses at 10% o'clock, and the voltage data of bus-bar potential transformer 2 can carry out high-speed data card 3 through signal cable 9 and send into industrial computer 4.
When line insulation is damaged, zero-sequence current appears in faulty line, then electronics zero sequence current mutual inductor 1 with the zero sequence current signal that collects after signal cable 9 input high-speed data acquisition cards 3 enter industrial computer 4 and carry out analyzing and processing simultaneously with voltage data, start fault and differentiate gate circuit 10, display 7 and electric bell 5, electric whistle 6 are worked simultaneously.
This device is because scientific allocation is reasonable, has also that the quality of power supply monitors, fault is recorded functions such as ripple automatically.
Principle of work of the present utility model is: based on normal busbar voltage, monitor the dielectric level of operating all electrical equipments by electronics zero sequence current mutual inductor 1 and bus-bar potential transformer 2, when in case the insulation of electrical installation downward trend takes place, before the master-control room ground signalling also starts warning, the electric bell 5 of device promptly sends fault advance notice sound equipment, when a certain circuit took place by ground connection, electric whistle 6 promptly sent the alerting signal bullet, and demonstrates the title of ground path on display 7.
Claims (4)
1. power circuit insulation line monitoring device, comprise and be used for the electronics zero sequence current mutual inductor (1) that zero-sequence current is gathered and be used for the bus-bar potential transformer (2) that voltage data is gathered and the industrial computer (4) that image data is handled and display (7) and electric bell (5), electric whistle (6), it is characterized in that: the zero sequence current mutual inductor (1) that is installed on each circuit is connected industrial computer (4) with bus-bar potential transformer (2) is in parallel by signal cable (9), and the signal via line after the analyzing and processing connects display (7) and electric bell (5), electric whistle (6).
2. power circuit insulation line monitoring device according to claim 1 is characterized in that: be connected by variable rate data capture card (3) between described zero sequence current mutual inductor (1) and bus-bar potential transformer (2) and the industrial computer (4) and communicate.
3. power circuit insulation line monitoring device according to claim 1 is characterized in that: be connected by gate circuit (10) between described industrial computer (4) and display (7), electric bell (5), the electric whistle (6) and constitute the loop.
4. power circuit insulation line monitoring device according to claim 1 is characterized in that: described circuit (10) also is provided with a communication and signaling interface (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200866141U CN201066378Y (en) | 2007-08-20 | 2007-08-20 | Online monitoring device for power line insulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200866141U CN201066378Y (en) | 2007-08-20 | 2007-08-20 | Online monitoring device for power line insulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201066378Y true CN201066378Y (en) | 2008-05-28 |
Family
ID=39483561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200866141U Expired - Fee Related CN201066378Y (en) | 2007-08-20 | 2007-08-20 | Online monitoring device for power line insulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201066378Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102135587A (en) * | 2011-01-31 | 2011-07-27 | 吕强 | Fault monitoring method and system of power line |
| CN106093697A (en) * | 2016-05-27 | 2016-11-09 | 无锡太湖学院 | A kind of circuit monitoring system |
| CN106199275A (en) * | 2016-07-22 | 2016-12-07 | 安徽亚辉电气自动化有限公司 | A kind of device for power quality analysis |
-
2007
- 2007-08-20 CN CNU2007200866141U patent/CN201066378Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102135587A (en) * | 2011-01-31 | 2011-07-27 | 吕强 | Fault monitoring method and system of power line |
| CN106093697A (en) * | 2016-05-27 | 2016-11-09 | 无锡太湖学院 | A kind of circuit monitoring system |
| CN106093697B (en) * | 2016-05-27 | 2018-12-18 | 无锡太湖学院 | A kind of circuit monitoring system |
| CN106199275A (en) * | 2016-07-22 | 2016-12-07 | 安徽亚辉电气自动化有限公司 | A kind of device for power quality analysis |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080528 Termination date: 20110820 |