Power cable insulation state monitoring system based on grounding circulation current detection and monitoring method thereof
A technology of insulation status and monitoring system, which is applied in the direction of measuring electricity, measuring devices, and measuring electrical variables, etc., and can solve problems such as accelerated cable insulation aging and inability to realize live detection
Pending Publication Date: 2019-01-01
JIANGSU ELECTRIC POWER CO +3
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Problems solved by technology
However, this method cannot realize live detection, and it is also destructive to a certain extent, which will accelerate the insulation aging of cables. Therefore, it is necessary to study new safe and effective online monitoring technology for power cable insulation.
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[0027] The specific implementation of a power cable insulation state monitoring system based on ground loop current detection of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0028] Such as figure 1 As shown, the insulation state monitoring system of the present invention includes a signal acquisition unit, a signal processing unit, an A / D conversion unit, a central processing unit, a key input unit, a storage unit, a display unit, an alarm unit, a communication unit and a monitoring center. The signal acquisition unit is sequentially connected with the signal processing unit, the A / D conversion unit, the central processing unit, the communication unit, and the monitoring center, and the central processing unit is also respectively connected with the key input unit, The storage unit, the display unit and the alarm unit are connected; the insulation state monitoring system collects and analyzes the grounding circulation...
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The invention provides a power cable insulation state monitoring system based on grounding circulation current detection The insulation state monitoring system comprises a signal acquisition unit, a signal processing unit, an A / D conversion unit, a central processing unit, a key input unit, a storage unit, a display unit, an alarm unit, a communication unit and a monitoring center. The insulationstate monitoring system collects and analyzes the grounding circulation current of the tested cable to realize real-time monitoring of the insulation state of the tested cable and sends out warning signals in time if the insulation is abnormal so that the relevant staff can take relevant measures in time. According to the power cable insulation state monitoring system based on grounding circulation current detection and the monitoring method thereof, the insulation state of the cable is obtained by monitoring the change of the grounding circulation current, the fault can be monitored in real time, safe and stable operation of the power cable can be ensured and the patrol inspection workload can be reduced.
Description
technical field [0001] The invention belongs to the technical field of electric power detection, and in particular relates to a power cable insulation state monitoring system and a monitoring method based on grounding circulation current detection. Background technique [0002] With the continuous development of my country's economy, people's demand for electric energy is increasing, which in turn increases the number of transmission and distribution lines. In cities, due to the increasing shortage of land resources, overhead lines will pose a potential threat to the safety of citizens' electricity use, and messy overhead lines will affect the appearance of the city, so more and more overhead lines are replaced by underground cables. substitute. Cable lines are laid underground, which is different from overhead lines. They are easily damaged by external forces and corroded by the environment, resulting in cable damage, reduced insulation performance, increased ground circul...
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Login to View More IPC IPC(8): G01R31/08G01R31/12
CPCG01R31/086G01R31/1272
Inventor 王震宇蔡兴涛管志强方志国
Owner JIANGSU ELECTRIC POWER CO