CN208367152U - Insulation on-line monitoring system - Google Patents
Insulation on-line monitoring system Download PDFInfo
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- CN208367152U CN208367152U CN201821017045.XU CN201821017045U CN208367152U CN 208367152 U CN208367152 U CN 208367152U CN 201821017045 U CN201821017045 U CN 201821017045U CN 208367152 U CN208367152 U CN 208367152U
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- 238000009413 insulation Methods 0.000 title claims abstract description 57
- 238000012544 monitoring process Methods 0.000 title claims abstract description 53
- 230000007246 mechanism Effects 0.000 claims abstract description 34
- 238000002955 isolation Methods 0.000 claims abstract description 21
- 238000004804 winding Methods 0.000 claims abstract description 13
- 230000011664 signaling Effects 0.000 abstract description 12
- 238000010586 diagram Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The embodiment of the application discloses insulating on-line monitoring system includes: the system comprises a direct-control type switch device remote monitoring terminal, an isolating switch operating mechanism, an isolating transformer and an insulation monitor; the direct control type switch device remote monitoring terminal is connected with the isolating switch operating mechanism through a cable; the live wire end of the output winding of the isolation transformer is simultaneously connected with one end of a control switch in a remote monitoring terminal of the direct-control switch device and the first end of the insulation monitor, and the zero wire end of the output winding of the isolation transformer is simultaneously connected with the other end of a motor in an operation mechanism of the isolation switch and the second end of the insulation monitor; and the third end of the insulation monitor is directly grounded. The technical scheme can know the operation condition of the field control cable of the isolating switch in real time in daily operation, can find the ground insulation fault or line-to-line insulation fault of the control cable in time, ensures the normal operation of the isolating switch, and prevents the phenomena of remote signaling misinformation and switch refusal caused by poor cable insulation.
Description
Technical Field
The application relates to the technical field of direct control type remote monitoring terminals, in particular to an insulation online monitoring system.
Background
At present, a direct control mode is generally adopted by an isolating switch operating mechanism, only a travel switch, a motor and an auxiliary contact are reserved in the isolating switch operating mechanism, and a motor driving loop is integrated in a remote monitoring terminal of a direct control type switch device. The remote monitoring terminal of the direct-control switch device is connected with the isolating switch operating mechanism by a control cable, so that the remote control operation and remote signaling acquisition of the isolating switch are realized.
In practice, the control cable is laid in a long-distance direct-buried mode, and in the long-term use process, the phenomenon of poor insulation is caused by insulation aging or external force damage, so that switch operation failure or remote signaling misinformation is caused. Under the conventional condition, only when the switch is refused to operate or the remote signaling error is reported, the maintainer consciously overhauls the insulated wire of the control cable.
SUMMERY OF THE UTILITY MODEL
The purpose of the embodiment of the application is to provide an insulation on-line monitoring system, which can make the insulation fault early warning of a control cable in advance, and avoid the switch failure and the remote signaling misinformation caused by the insulation fault of the control cable.
In order to achieve the above object, an embodiment of the present application provides an insulation online monitoring system, including: the remote monitoring terminal of the direct control type switch device and the isolating switch operating mechanism are arranged; the direct control type switch device remote monitoring terminal is connected with the isolating switch operating mechanism through a control cable; further comprising: an isolation transformer and an insulation monitor; wherein,
the live wire end of the output winding of the isolation transformer is simultaneously connected with one end of a control switch in the remote monitoring terminal of the direct-control switch device and the first end of the insulation monitor, and the zero wire end of the output winding of the isolation transformer is simultaneously connected with the other end of a motor in the operation mechanism of the isolation switch and the second end of the insulation monitor; and the third end of the insulation monitor is directly grounded.
Preferably, the other end of the control switch in the remote monitoring terminal of the direct-control switch device is connected with one end of a travel switch in the isolating switch operating mechanism through the control cable, and the other end of the travel switch in the isolating switch operating mechanism is connected with one end of a motor in the isolating switch operating mechanism through the control cable.
Therefore, compared with the prior art, the technical scheme can know the operation condition of the field control cable of the isolating switch in real time in daily operation, can find the ground insulation fault or the line-to-line insulation fault of the control cable in time, prompts maintenance and repair of maintainers, ensures normal operation of the isolating switch, and prevents the phenomena of remote signaling misinformation and switch refusal caused by poor cable insulation.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic circuit connection diagram of an insulation on-line monitoring system disclosed in the present specification.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application shall fall within the scope of protection of the present application.
In order to thoroughly avoid the phenomena of refusal action, false alarm and the like caused by poor cable insulation of a direct-control type isolating switch monitoring system, a remote monitoring terminal of a direct-control type switch device is required to have an insulation online monitoring function, and insulation fault early warning is made in advance and timely processed. Therefore, the insulation on-line monitoring of the live wire in the control cable is realized by utilizing the control characteristics of the remote monitoring terminal of the direct control type switch device and by means of the mode of the common zero wire on the basis of the insulation on-line monitoring of the zero wire in the control cable, and further by the conduction of the remote signaling loop, the insulation on-line monitoring of the live wire in the control cable is realized, so that the insulation performance on-line monitoring of the control cable is realized, and the fault information is uploaded.
Based on the above description of the operating principle, as shown in fig. 1, a schematic circuit connection diagram of an insulation on-line monitoring system disclosed in this specification is shown. The system comprises a direct-control type switch device remote monitoring terminal, an isolating switch operating mechanism, an isolating transformer and an insulation monitor.
The live wire end of the output winding of the isolation transformer is simultaneously connected with one end of a control switch in the remote monitoring terminal of the direct-control switch device and the first end of the insulation monitor, and the zero wire end of the output winding of the isolation transformer is simultaneously connected with the other end of a motor in the operation mechanism of the isolation switch and the second end of the insulation monitor; and the third end of the insulation monitor is directly grounded. The other end of the control switch in the remote monitoring terminal of the direct control type switch device is connected with one end of a travel switch in the isolating switch operating mechanism through the control cable, and the other end of the travel switch in the isolating switch operating mechanism is connected with one end of a motor in the isolating switch operating mechanism through the control cable.
In the technical scheme, the power supply of the remote monitoring terminal of the direct-control type switch device is introduced from the secondary side of the isolation transformer, and the insulation monitor monitors the power supply incoming line of the remote monitoring terminal of the direct-control type switch device to realize the online monitoring of the insulation performance of all control cables between the remote monitoring terminal of the direct-control type switch device and the isolation switch operating mechanism, namely, the insulation resistance tester can monitor the insulation performance of the cables in real time when the control cables are in a remote control or remote signaling state.
In the whole system, the remote monitoring terminal of the direct-control type switch device is only connected with the live wire end of the output winding of the isolation transformer, and the null wire end of the output winding of the isolation transformer is not connected with the remote monitoring terminal of the direct-control type switch device and is directly connected with the motor in each isolation switch operating mechanism. The first end of the insulation monitor is connected with the live wire end of the output winding of the isolation transformer, the second end of the insulation monitor is connected with the zero wire end of the output winding of the isolation transformer, and the third end of the insulation monitor is directly grounded. At the moment, the insulation monitor can monitor the insulation condition of the zero lines of the control cables in all the isolating switch operating mechanisms by monitoring the zero lines of the output windings of the isolating transformers.
The remote monitoring terminal of the direct control type switch device adopts a time-sharing multiplexing design, is connected with the isolating switch operating mechanism through 3 control cables and forms a loop with the position-dividing travel switch and the position-closing travel switch in the isolating switch operating mechanism, when no remote control operation is carried out, a remote signaling loop is formed between the remote monitoring terminal of the direct control type switch device and the isolating switch operating mechanism for use, when the remote signaling signals of the position-dividing travel switch and the position-closing travel switch in the isolating switch operating mechanism are returned, a remote control board in the remote monitoring terminal of the direct control type switch device is connected with the travel switch in each isolating switch operating mechanism only through a first live wire L1 and a second live wire L2 in the control cables, a third control cable is a zero wire, one end of the third control cable is not connected with the remote control board in the remote monitoring terminal of the direct control type switch device and is directly connected with a motor in the isolating switch operating mechanism, the other end of the third control cable is directly connected with the zero wire end of an output, the zero line in the control cable is always in a conducting state, and the insulation monitor can realize the on-line monitoring of the zero line in the control cable between all the isolating switch operating mechanisms and the remote monitoring terminal of the direct control type switch device while carrying out the on-line real-time insulation monitoring on the zero line of the secondary side power supply of the isolating transformer. Meanwhile, as the travel switch in the isolating switch operating mechanism is separated and closed to form a remote signaling loop, the first live wire L1 in the control cable and the zero wire in the control cable or the second live wire L2 in the control cable are communicated with the zero wire in the control cable, and the insulating monitor realizes the insulating on-line monitoring of the other two control cables, therefore, the insulating monitor realizes the insulating performance monitoring of the live wires in the control cables by monitoring the zero wire in the control cables, and the insulating on-line monitoring function of the whole system is realized. And when the insulation is in fault, a fault signal is uploaded.
The system can know the operation condition of the field control cable of the isolating switch in real time in daily operation, and can upload fault information in time when a cable insulation fault to the ground or a line insulation fault occurs, so as to guide maintainers to maintain and repair the cable, ensure the normal operation of the isolating switch, and prevent the phenomena of false remote signaling and switch failure caused by poor cable insulation.
Although the present application has been described in terms of embodiments, those of ordinary skill in the art will recognize that there are numerous variations and permutations of the present application without departing from the spirit of the application, and it is intended that the appended claims encompass such variations and permutations without departing from the spirit of the application.
Claims (2)
1. An insulation on-line monitoring system comprising: the remote monitoring terminal of the direct control type switch device and the isolating switch operating mechanism are arranged; the direct control type switch device remote monitoring terminal is connected with the isolating switch operating mechanism through a control cable; it is characterized by also comprising:
an isolation transformer and an insulation monitor; wherein,
the live wire end of the output winding of the isolation transformer is simultaneously connected with one end of a control switch in the remote monitoring terminal of the direct-control switch device and the first end of the insulation monitor, and the zero wire end of the output winding of the isolation transformer is simultaneously connected with the other end of a motor in the operation mechanism of the isolation switch and the second end of the insulation monitor; and the third end of the insulation monitor is directly grounded.
2. The insulation on-line monitoring system according to claim 1, wherein the other end of the control switch in the remote monitoring terminal of the direct-controlled switchgear is connected to one end of the travel switch in the disconnector operating mechanism through the control cable, and the other end of the travel switch in the disconnector operating mechanism is connected to one end of the motor in the disconnector operating mechanism through the control cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821017045.XU CN208367152U (en) | 2018-06-29 | 2018-06-29 | Insulation on-line monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821017045.XU CN208367152U (en) | 2018-06-29 | 2018-06-29 | Insulation on-line monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208367152U true CN208367152U (en) | 2019-01-11 |
Family
ID=64927467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821017045.XU Active CN208367152U (en) | 2018-06-29 | 2018-06-29 | Insulation on-line monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208367152U (en) |
-
2018
- 2018-06-29 CN CN201821017045.XU patent/CN208367152U/en active Active
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