ZGDJ-X1 Distributed Fault Location System

ZGDJ-X1 Distributed Fault Location System

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ZGDJ-X1 Distributed Fault Location System is an advanced lightning monitoring device independently developed and produced by Sichuan Zhongguang Lightning Protection Technologies Co., Ltd. The system moves the traditional fault location device from the secondary side of the substation to the line, directly obtains the fault current traveling wave, conducts coordinated analysis through multiple detection points of fault current traveling wave, and finally obtains the fault point location.

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General                                                                                
ZGDJ-X1 Distributed Fault Location System is an advanced lightning monitoring device independently developed and produced by Sichuan Zhongguang Lightning Protection Technologies Co., Ltd. The system moves the traditional fault location device from the secondary side of the substation to the line, directly obtains the fault current traveling wave, conducts coordinated analysis through multiple detection points of fault current traveling wave, and finally obtains the fault point location. Compared with the traditional failure-recording & distance-determining device and traveling wave positioning device, the distributed fault location is more realistic in extracting the current traveling wave, and the calculation result is corrected by combining the line running state information, which can greatly improve the positioning accuracy. At the same time, for lightning interference, the system makes full use of the time-domain information of the lightning current traveling wave, and analyzes the polarity and energy spectrum respectively, which can effectively identify the lightning strike type and further guide the operation department to formulate a targeted lightning protection plan. The system can quickly determine the fault zone and the fault location, shorten the fault repair time, greatly improve the power supply reliability, and reduce the direct and indirect losses caused by the fault, suitable for interval location and accurate positioning of trip faults of power lines of various voltage levels of 35kV and above.

Product Configuration (Standard Configuration)                                                                  

Name Quantity Unit Remarks
Monitoring terminal of ZGDJ-X1 distributed fault location 3 Set Every 3 terminals compose a group that is installed every 20-30 km.
Main monitoring station (background data center and application software) 1 Set Unified configuration by provincial company


Performance Index                                                                            

Ranging error ≤ ± 300 m
Load current allowed to flow through the wire for a long time ≤ 1000 A
Starting current ≥ 30 A
Fault interval location reliability ≥ 99 %
Lightning & non-lightning fault identification accuracy ≥ 95 %
Fault signal upload time ＜ 60 s
Fault diagnosis & analysis time ≤ 10 s
Monitoring line capacity of the data center ＞ 10000 items

 

Standards Complied                                                                             
Q/GDW 11660 - 2016
 
Overall Dimensions                                                                             
The external dimensions of the ZGDJ-X1 distributed fault location monitoring terminal are ф150mm×320mm (diameter × length).

 


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