In the huge complexity of the modern power grid transmission network, line faults are like hidden "dark mine", how to quickly, locate the fault location, identify the type of faults, power operations and maintenance of the key challenges faced. Shenzhen Dingshin Wisdom Technology launched Running Wave Ranging Detection DeviceDX-WPS100-GZ01, also known as Distributed Fault Diagnostic Device, brings a brand-new solution for grid fault diagnosis with innovative installation method and powerful functional features. The DX-WPS100-GZ01, also known as distributed fault diagnostic device, with innovative installation and powerful functional characteristics, brings a brand-new solution for power grid fault diagnosis, and becomes an important innovative tool to ensure the safe and stable operation of power grid.
The traditional way of fault diagnosis often relies on centralized monitoring or tower-by-tower investigation, which is inefficient and costly. The traveling wave ranging detection device adopts distributed installation mode, breaking this predicament. It does not need to be installed on each base tower, but the whole line to form a double-ended ranging mode, in accordance with the scientific deployment planning, each additional 30 km set up a device. This installation not only ensures the effective coverage of transmission lines, but also to avoid the waste of resources caused by excessive installation, significantly reducing the construction and operation and maintenance costs. For the same tower line, each installation point only need to configure a set of terminals, can realize the simultaneous monitoring of multiple lines, further enhance the applicability and economy of the device.
The core function of the traveling wave ranging detection device lies in the ability to quickly and accurately determine the fault section after a transmission line fault. When the line is abnormal, the device through the frequency, fault traveling wave real-time monitoring and analysis, combined with advanced algorithms, can be locked in a very short period of time, the fault occurred in the approximate range of 100 meters, locking the tower level positioning. This is like the power operation and maintenance personnel equipped with a "location map", bid farewell to the previous aimless way of investigation, so that they can quickly arrive at the scene of the fault, greatly shortening the fault processing time.
In addition, after the tripping of the line, the traveling wave ranging detection device also has a strong fault type recognition capability, which can accurately distinguish between lightning strike and non-lightning strike faults. Lightning strike faults are usually transient, high voltage and other characteristics, while non-lightning strike faults are triggered by short circuits, broken wires and other reasons, with different forms of performance. The traveling wave ranging detection device is able to determine whether the fault is caused by lightning strike by deeply analyzing the characteristics of the electrical signal at the instant of the fault. This function is crucial for subsequent fault handling and line maintenance. If it is a lightning strike fault, operation and maintenance personnel can focus on checking the line insulation and lightning protection facilities; if it is a small animal touching the line, external damage and other non-lightning strike faults, it is necessary to further investigate whether there is damage to the line equipment, so as to develop more targeted solutions.
At present, our traveling wave ranging detection device has demonstrated stable performance in several power grid projects, allowing fault location The accuracy of fault location has been significantly improved, and its efficient fault type identification function has also helped the O&M team identify and deal with a number of potential line hazards in a timely manner, effectively preventing the occurrence of major faults.
