In the power transmission network, high-voltage cables serve as key hubs connecting the power generation and consumption ends, and their operational reliability directly affects the safety and stability of the power grid. However, due to factors such as environmental aging, external damage, and insulation degradation, high-voltage cable failures occur frequently, leading to frequent power outages and causing serious losses to social production and residents' lives. DunhengDH-ZWGZ100The high-voltage cable fault precise positioning system achieves fault positioning accuracy of less than 100 Mbps by integrating 100Mbps high-speed sampling, Beidou high-precision timing, and artificial intelligence deep learning algorithms5The technological breakthrough of Mi provides a revolutionary solution for power grid operation and maintenance. This article will deeply analyze the application significance of the system from four dimensions: ensuring power supply reliability, reducing operation and maintenance costs, promoting smart grid construction, and enhancing emergency response capabilities.

1、 Ensuring power supply reliability: shortening power outage time and reducing economic losses

High voltage cable faults are one of the main causes of power outages in the power grid. Traditional fault location methods rely on manual line inspection and empirical judgment, resulting in large positioning errors and long time consumption. Especially in complex terrain or underground pipelines, fault repair time may take several days, causing widespread power outages and socio-economic losses. The Dunheng system significantly improves power supply reliability through the following technical means:

High precision positioning（<5Rice)
Based on the principle of traveling wave dual end distance measurement, combined with high-precision timing of Beidou（10nsThe system can accurately calculate the location of the fault point using calibration techniques for signal phase errors, reducing the traditional positioning time from several hours to minutes and quickly restoring power supply.

Intelligent recognition of fault types
Using deep learning algorithms, the system can automatically identify fault types such as short circuits, grounding, and disconnection, with a recognition rate of up to95%Above, assist operation and maintenance personnel in quickly developing repair plans to reduce troubleshooting time.

2、 Reduce operation and maintenance costs: optimize resource allocation, improve management efficiency

Traditional high-voltage cable operation and maintenance rely on regular inspections and manual troubleshooting, which have problems such as high labor costs, low efficiency, and high risk of missed inspections. Dunheng system achieves operation and maintenance mode upgrade through intelligent means:

Remote monitoring and early warning
The cable monitoring terminal collects fault traveling waves and power frequency signals in real time, through4GWireless communication is uploaded to the monitoring platform, combined with artificial intelligence algorithms to automatically diagnose fault risks, warn potential hazards in advance, and avoid the expansion of faults.

Reduce reliance on manual inspection
The system can automatically generate fault reports and operation and maintenance suggestions, and operation and maintenance personnel only need to accurately repair the fault points without the need for full line inspections, reducing labor and time costs. For example, in a city's power grid application, the operation and maintenance costs are reduced after the system is put into operation40%Improve the efficiency of fault repair60%.

3、 Promoting the construction of smart grid: empowering digital operation and maintenance, enhancing the resilience of the power grid

With the development of smart grid and energy internet, power grid operation and maintenance needs to be transformed to digital and intelligent. As the core device of the smart grid perception layer, the Dunheng system has the following technical advantages:

Multi source data fusion analysis
The system can integrate sensor data such as cable temperature, partial discharge, and vibration to construct a cable lifecycle health record, providing data support for asset management and status maintenance.

Collaboration between cloud platforms and mobile devices
supportWebClient and mobile phoneAPPRemote access allows operation and maintenance personnel to view real-time fault alarms, location results, and equipment status, achieving“Unmanned operation and remote control”The intelligent operation and maintenance mode.

Standardized interfaces and scalability
System compatibilityIEC 61850TheModbusBy using communication protocols, it can seamlessly integrate into the power grid dispatch system and asset management system, promoting the digital transformation of power grid operation and maintenance.

4、 Enhance emergency response capability: shorten repair time, ensure people's safety

In emergency situations such as natural disasters and weather, high-voltage cable failures may lead to widespread power outages and social crises. The Dunheng system improves emergency response efficiency through the following functions:

Quick positioning and resource scheduling
After a fault occurs, the system automatically pushes the location and type of the fault to the operation and maintenance personnel's mobile phones, assisting them in quickly allocating repair resources and shortening repair time. For example, in a typhoon disaster, the system assists the operations team in2Locate and repair within hours3Cable malfunction, restore power supply.

Historical data tracing and fault analysis
The system can store fault recording data and operation and maintenance records, support post fault review and cause analysis, optimize power grid design and operation and maintenance strategies, and enhance the disaster resistance capability of the power grid.

Conclusion: Precise positioning of high-voltage cable faults——The Smart Grid“Security Guard”

DunhengDH-ZWGZ100The precise fault location system for high-voltage cables has achieved fault location through technological innovation“Experience driven”to“data-driven”The leap provides efficient, precise, and intelligent solutions for power grid operation and maintenance. The system has demonstrated significant application value in ensuring power supply reliability, reducing operation and maintenance costs, promoting smart grid construction, and enhancing emergency response capabilities. In the future, with the increasing demand for intelligent power grids and new energy grid integration, precise fault location technology for high-voltage cables will continue to iterate, providing core support for building a safe, efficient, and green modern energy system.