CN203376430U - Substation secondary control cable shielding current real-time monitoring device - Google Patents
Substation secondary control cable shielding current real-time monitoring device Download PDFInfo
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- CN203376430U CN203376430U CN201320460820.XU CN201320460820U CN203376430U CN 203376430 U CN203376430 U CN 203376430U CN 201320460820 U CN201320460820 U CN 201320460820U CN 203376430 U CN203376430 U CN 203376430U
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Abstract
The utility model relates to a substation secondary control cable shielding current real-time monitoring device. The structure is that a current transformer is connected to a grounding wire of a cable shielding layer, the output end of the current transformer is connected with a current data acquisition processor, the output end of the current data acquisition processor is connected with a display and a current comparator, and the current comparator is connected with an upper computer of a common measurement and control screen through a communication module. The substation secondary control cable shielding current real-time monitoring device acquires data of shielding current of shielding cables of important lines and equipment intervals in real time, and the data is uploaded to local and a dispatching monitoring system so as to be used for monitoring, thereby ensuring the maintenance personnel to master whether the shielding effect of an in-station grounding system and a secondary cable is normal or not in time. When the shielding current is abnormal, the maintenance personnel are enabled to carry out inspection on the secondary cable loop in time so as to ensure the reliable operation of secondary equipment.
Description
Technical field
The utility model relates to a kind of bucking current monitoring device, relates in particular to a kind of substation secondary control cables bucking current real-time monitoring device, belongs to electric power conveying technology field.
Background technology
According to 18 countermeasures of state's net, all should use the cable with screen layer to the linear quadratic control cable, and guarantee that cable shielding layer earthing is good, to guarantee the secondary device reliability service.At the scene in actual motion, whether the screen layer of each secondary cable brings into play shielding action, whether there is bucking current to pass through, not directly perceived, need the secondary maintenance personnel, during patrolling and examining, after using the instrumentation instrument to be measured, whether ground connection is good could to judge screen layer, in time the reliability of earthed system and cable shield in monitoring station.
The utility model content
The utility model, for above-mentioned problems of the prior art, provides a kind of substation secondary control cables bucking current real-time monitoring device, solved in the prior art can not the Real-Time Monitoring bucking current problem.
The technical solution of the utility model is as follows:
. current transformer is connected on the cable shielding layer earthing line, the current transformer output terminal is connected with the current data Acquisition Processor, the output terminal of current data Acquisition Processor connects display and current comparator, and current comparator is connected with the host computer of public observing and controlling screen by communication module.
Described current transformer is the portable split core type current transformers in 12 tunnels.
Described host computer connects dispatch center by 3G or GPRS wireless communication module.
The utlity model has following advantage:
Bucking current by the shielded cable of important line, equipment interval, by the portable pincers type of multichannel current collecting device is installed, real-time data collection, process with data and compare through data, as data extremely upload to locality and Dispatching monitor and control system by communication module, give the alarm and monitored, can make the maintainer carry out in time the inspection of secondary cable ground loop, to ensure the reliability service of secondary device.Can be monitored the earth potential of secondary circuit, guarantee transforming plant primary equipment, the transient state current potential of generation, drop to minimum to the interference of secondary device.
The accompanying drawing explanation
Fig. 1 structural representation block diagram of the present utility model.
Embodiment
Referring to accompanying drawing, in conjunction with specific embodiments, describe the utility model in detail.
Embodiment
As shown in Figure 1, the portable split core type current transformer in 12 tunnels is connected on the cable shielding layer earthing line, the current transformer output terminal is connected with the current data Acquisition Processor, the output terminal of current data Acquisition Processor connects display and current comparator, current comparator is connected by communication module network interface or 485 mouthfuls of host computers with public observing and controlling screen, and host computer connects dispatch center by 3G or GPRS wireless communication module.
Monitoring method of the present utility model is as follows: on the important secondary cable shielding line in protection screen, the portable pincers type of multichannel current collecting device is installed, is automatically measured the current value in many shielding lines simultaneously.Set the restraint of crossing of current comparator according to rules regulation and on-site actual situations and do and rreturn value, lower bound action and rreturn value, when in arbitrary shielding line is arranged, electric current does not meet setting valve, current comparator will send warning information.Communication module, by network interface or 485 mouthfuls, can reach warning information " alarm of XX protection screen inner screening current anomaly " in public observing and controlling screen, then be connected with supervisory system.Above-mentioned warning information reaches local monitoring backstage and dispatch center by supervisory system, is convenient to the operations staff and finds that in time whether the cable shield electric current is normal, and whether secondary circuit cable, ground connection be normal.
The utility model is used multichannel pincers type current collecting device, guarantees that the use of this device and dismounting do not affect the cable shielding layer earthing operation, realize that packaged type is used, the emphasis monitoring.
The utility model adopts No. 12 pincers type current acquisition systems, after current data gathers, one tunnel is for showing each cable shield current value, another road input current comparer, at each cable shield electric current, during below or above limit value, current comparing module is sent alarm signal, through communication module, issues on-the-spot public observing and controlling screen, by sending to scheduling monitoring alarm on public observing and controlling screen, extremely processed making in time.
The utility model is used direct supply, prevents unstable when system exception of AC power supply system, guarantees reliable measuring data, stable, continuously.
Claims (3)
1. substation secondary control cables bucking current real-time monitoring device, it is characterized in that current transformer is connected on the cable shielding layer earthing line, the current transformer output terminal is connected with the current data Acquisition Processor, the output terminal of current data Acquisition Processor connects display and current comparator, and current comparator is connected with the host computer of public observing and controlling screen by communication module.
2. substation secondary control cables bucking current real-time monitoring device according to claim 1, is characterized in that described current transformer is the portable split core type current transformers in 12 tunnels.
3. substation secondary control cables bucking current real-time monitoring device according to claim 1, is characterized in that described host computer connects dispatch center by 3G or GPRS wireless communication module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320460820.XU CN203376430U (en) | 2013-07-31 | 2013-07-31 | Substation secondary control cable shielding current real-time monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320460820.XU CN203376430U (en) | 2013-07-31 | 2013-07-31 | Substation secondary control cable shielding current real-time monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203376430U true CN203376430U (en) | 2014-01-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320460820.XU Expired - Lifetime CN203376430U (en) | 2013-07-31 | 2013-07-31 | Substation secondary control cable shielding current real-time monitoring device |
Country Status (1)
| Country | Link |
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| CN (1) | CN203376430U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103389437A (en) * | 2013-07-31 | 2013-11-13 | 国家电网公司 | Device and method for monitoring shielding current of secondary control cable of transformer substation in real time |
| CN108627738A (en) * | 2017-03-16 | 2018-10-09 | 宝钢特钢有限公司 | A kind of on-Line Monitor Device and monitoring method for monitoring electroslag furnace water-cooled cable |
-
2013
- 2013-07-31 CN CN201320460820.XU patent/CN203376430U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103389437A (en) * | 2013-07-31 | 2013-11-13 | 国家电网公司 | Device and method for monitoring shielding current of secondary control cable of transformer substation in real time |
| CN108627738A (en) * | 2017-03-16 | 2018-10-09 | 宝钢特钢有限公司 | A kind of on-Line Monitor Device and monitoring method for monitoring electroslag furnace water-cooled cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140101 |