CN209821333U - Remote cable live-line detection loop - Google Patents
Remote cable live-line detection loop Download PDFInfo
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- CN209821333U CN209821333U CN201920416717.2U CN201920416717U CN209821333U CN 209821333 U CN209821333 U CN 209821333U CN 201920416717 U CN201920416717 U CN 201920416717U CN 209821333 U CN209821333 U CN 209821333U
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- incoming line
- protection device
- transformer substation
- line protection
- display
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Abstract
The utility model relates to a remote cable live detection loop, which is provided with a transformer substation, a user incoming line and an incoming line protection device; one end of the user incoming line is connected with a high-voltage bus of the transformer substation; one end of the incoming line protection device is connected to a high-voltage bus of the transformer substation, and the other end of the incoming line protection device is in communication transmission with a remote place; the system is also provided with a charged display, a sensor and a pair of dry nodes K1 and K2 for acquiring whether the incoming line power supply disappears; the trunk nodes K1 and K2 are connected into an incoming line protection device; the sensor inputs electric quantity to the electrified display; the incoming line protection device collects signals of the trunk nodes K1 and K2 and uploads the signals to a remote monitor through the protection device. The utility model discloses a whether electrified display directly judges the inlet wire and loses the electricity, owing to be direct collection, the reliability is high.
Description
Technical Field
The utility model relates to an electrical equipment field, in particular to electrified return circuit that detects of distant place cable.
Background
With continuous deepening of informatization, power supply companies have already realized the construction of unattended substations, users also start to set up corresponding centralized control stations or monitoring centers according to the scale of the substations, and unattended operation management modes are adopted in the substations. Conventional power data and fault information can be collected through an informatization means, and the unattended operation requirement can be met.
However, for whether a cable is electrified after remote operation, particularly for an incoming cable, because a superior switch cannot monitor the cable and a power supply company has power failure, a substation is not electrified, a reliable acquisition device cannot be used for completely and accurately judging the power failure, and a user often needs to confirm the power failure through a telephone under the condition. And the real power failure reason needs to be rapidly and accurately mastered for the unattended substation.
At present, an unattended substation can only judge through electric quantity, and conventionally judges according to voltage and current collected by a protection device, but the judgment is inaccurate because when the load is small (particularly the load is basically not), namely the current is basically 0, and when a voltage transformer (PT) has a fault, namely the voltage is also 0, in this case, the comprehensive judgment is inaccurate, and the possibility of misjudgment exists.
Disclosure of Invention
The utility model aims at overcoming the defect that prior art exists, providing a simple structure, safe and reliable, the electrified return circuit of the long-range cable of the electrified condition of judgement cable that the long-range can be accurate.
Realize the utility model discloses the technical scheme of purpose is: a remote live cable detection loop comprises a transformer substation, a user incoming line and an incoming line protection device; one end of the user incoming line is connected with a high-voltage bus of the transformer substation; one end of the incoming line protection device is connected to a high-voltage bus of the transformer substation, and the other end of the incoming line protection device is in communication transmission with a remote place; the system is also provided with a charged display, a sensor and a pair of dry nodes K1 and K2 for acquiring whether the incoming line power supply disappears; the trunk nodes K1 and K2 are connected into an incoming line protection device; the sensor inputs electric quantity to the electrified display; the incoming line protection device collects signals of the trunk nodes K1 and K2 and uploads the signals to a remote monitor through the protection device.
According to the technical scheme, one end of the sensor is connected with a high-voltage bus of a transformer substation, and the other end of the sensor is connected with a display wiring terminal row; the charged display is connected with the + KM-KM working power supply ends of the display wiring terminal strip.
The working power supply terminal voltage of + KM and-KM of the display terminal block is direct current 110V-220V.
After the technical scheme is adopted, the utility model discloses following positive effect has: the utility model discloses to the design of unmanned on duty transformer substation, directly judge whether the inlet wire loses the electricity through electrified display, owing to be direct acquisition, the reliability is high, avoids the condition of erroneous judgement.
Drawings
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is given in conjunction with the accompanying drawings, in which
Fig. 1 is a schematic diagram of a conventional typical 10kV substation;
fig. 2 is a schematic structural diagram of the present invention.
Detailed Description
(example 1)
As shown in fig. 2, the utility model is provided with a transformer substation, a user incoming line and an incoming line protection device 4; one end of a user incoming line is connected with a high-voltage bus 1 of the transformer substation; one end of the incoming line protection device 4 is connected to a high-voltage bus 1 of the transformer substation, and the other end of the incoming line protection device is in communication transmission with a remote place; the system is also provided with a charged display 3, a sensor 2 and a pair of dry nodes K1 and K2 for acquiring whether the incoming line power supply disappears; the dry nodes K1 and K2 are connected into the incoming line protection device 4; the sensor 2 inputs electric quantity to the electrified display 3; the incoming line protection device 4 collects signals of the trunk nodes K1 and K2, and the signals are uploaded to a remote monitor through the protection device 4.
One end of the sensor 2 is connected with a high-voltage bus 1 of the transformer substation, and the other end of the sensor is connected with a display wiring terminal block 5; the charged display 3 is connected with the + KM and-KM working power supply ends of the display wiring terminal strip 5.
The working power supply terminal voltage of + KM and-KM of the display terminal strip 5 is direct current 110V-220V.
The utility model discloses a theory of operation does: a pair of dry nodes of K1, K2 accesses into the incoming line protection device 4, wherein: k1 and K2 collect that the incoming line power supply disappears, and the sensor 2 inputs electric quantity to the electrified display 3, so that the judgment is reliable and accurate; the + KM and-KM are working power supplies of the charged display 3 and are direct current of 110V-220V. The protection device 4 collects the dry node signals of the pairs of K1 and K2 and uploads the signals to a remote monitor through the protection device 4. The utility model relates to a software program part all can adopt prior art to realize.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (3)
1. A remote live cable detection loop comprises a transformer substation, a user incoming line and an incoming line protection device; one end of the user incoming line is connected with a high-voltage bus of the transformer substation; one end of the incoming line protection device is connected to a high-voltage bus of the transformer substation, and the other end of the incoming line protection device is in communication transmission with a remote place; the method is characterized in that: the system is also provided with a charged display, a sensor and a pair of dry nodes K1 and K2 for acquiring whether the incoming line power supply disappears; the trunk nodes K1 and K2 are connected into an incoming line protection device; the sensor inputs electric quantity to the electrified display; the incoming line protection device collects signals of the trunk nodes K1 and K2 and uploads the signals to a remote monitor through the protection device.
2. The remote cable live detection circuit of claim 1, wherein: one end of the sensor is connected with a high-voltage bus of the transformer substation, and the other end of the sensor is connected with a display wiring terminal row; the charged display is connected with the + KM-KM working power supply ends of the display wiring terminal strip.
3. The remote cable live detection circuit of claim 2, wherein: the working power supply terminal voltage of + KM and-KM of the display terminal block is direct current 110V-220V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920416717.2U CN209821333U (en) | 2019-03-29 | 2019-03-29 | Remote cable live-line detection loop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920416717.2U CN209821333U (en) | 2019-03-29 | 2019-03-29 | Remote cable live-line detection loop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209821333U true CN209821333U (en) | 2019-12-20 |
Family
ID=68877778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920416717.2U Active CN209821333U (en) | 2019-03-29 | 2019-03-29 | Remote cable live-line detection loop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209821333U (en) |
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2019
- 2019-03-29 CN CN201920416717.2U patent/CN209821333U/en active Active
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