Core Solution for Intelligent Upgrade of Traditional Cable Earthing Box
Intelligent Monitoring Device for Cable‑Earthing Box
Core Solution for Intelligent Upgrade of Traditional Cable Earthing Box
PART 01 Solution Introduction
Background
Traditionally, earthing boxes for long‑distance high‑voltage cable lines are installed inside underground cable trenches. Although they guarantee basic cable operation, harsh underground conditions including high humidity, corrosive gas and biological gnawing easily cause copper‑bar corrosion and water ingress, resulting in unstable electrical performance. Manual on‑site inspection is difficult and maintenance workload is heavy, bringing hidden risks to the stability and reliability of cable circuits.
With the advancement of power technology and improvement of operation‑management standards, power‑grid maintenance teams relocate earthing boxes from underground to ground‑level protective cabinets, so as to isolate equipment from harsh environments and ensure reliable operation.
Solution Overview
Based on thorough research on the defects of conventional cable earthing boxes, Haosheng has developed an intelligent‑retrofit solution for existing earthing boxes.
Integrated with earthing‑system monitoring technologies, the solution adopts high‑precision sensors, stable communication and intelligent data analysis to monitor cable circulating current, voltage, temperature and water‑immersion status in real time, ensuring stable power‑system operation. It collects key operating data, conducts in‑depth data analysis and triggers rapid alarms upon abnormalities, so as to prevent failures and improve power‑system reliability.
Benefits & Advantages of Retrofit
Real‑time Monitoring High‑precision sensors continuously capture cable operating status including circulating‑current value, voltage value, temperature and water‑immersion condition, enabling early detection of anomalies.
Intelligent Early Warning The intelligent data‑analysis engine processes monitoring data continuously. Once abnormal conditions are detected, early‑warning notifications are pushed to maintenance staff to prevent fault escalation.
Efficient Operation & Maintenance Enables maintenance crews to pinpoint fault locations, accelerate response and shorten repair duration. It reduces manual‑inspection workload and on‑site safety risks.
Extended Service Life of Equipment Real‑time monitoring and intelligent management optimize cable operating conditions, reduce fault occurrences, prolong service life of cables and earthing boxes, and cut equipment‑replacement costs.
Data‑Driven Decision Support Provides quantitative data for power‑grid dispatching and maintenance departments, supporting scientific production planning, resource allocation and fault‑handling decisions, and elevating overall O&M management level.
System Architecture
PART 02 Hardware Introduction
Intelligent Comprehensive Cable‑Earthing Monitoring Device This device monitors critical parameters including sheath voltage, circulating current and temperature of power‑cable protective layers. It generates timely alarms for detected anomalies to prompt maintenance work.
01 Specification Parameters
Item | Parameter | Item | Parameter |
|---|---|---|---|
Circulating‑current Measurement | 3 channels, 0~100AAccuracy: ±0.05AMeasurement cycle: ≥10s (configurable)Resolution:16bit | Data Transmission | Communication:4GBaud rate:115200bpsData length:8 bitStart bit:1 bitStop bit:1 bitCheck bit:No checkSupported protocol:MQTT |
Voltage Measurement | 3‑channel induced sheath voltage,0~100VAccuracy:±0.5VMeasurement cycle:≥10s (configurable)Resolution:16bit | Power Supply & Power Consumption | Battery poweredBattery type:Primary lithium‑thionyl‑chloride batteryCapacity:38AhStandby current:50μASampling current:110mAData‑transmission current:200mA |
Temperature Measurement | 3 channels,‑50℃~+200℃Accuracy:±1℃Measurement cycle:≥10s (configurable) | Mechanical | Dimension(L×W×H):140×56×85 mmEnclosure protection class:IP68 |
Water‑Immersion Monitoring | Alarm triggered immediately upon water immersion | Other | Management port: RS485 for upgrade & maintenance |
Ambient Condition | Operating temperature:‑40℃ ~ +85℃ |
02 Functional Features
- High‑precision Measurement Adopted advanced sensor technology and data‑processing algorithms to guarantee high‑accuracy and high‑reliability measurement with minimal error.
- 24‑Hour Real‑time Monitoring Non‑stop data acquisition, realizing early discovery and pre‑warning for potential safety hazards.
- Low‑power Consumption Design Low‑power hardware design extends battery service life and reduces overall cost.
- Fault Pre‑warning When measured parameters exceed preset threshold values, the device triggers alarms to notify maintenance personnel for timely disposal.
- High Stability & Anti‑interference Performance Stable operation under strong electromagnetic‑interference environment to secure monitoring‑data accuracy.
- Easy Installation & Maintenance Compact mechanical structure for simple field installation. Remote configuration and remote upgrade are supported to lower maintenance cost.
PART 03 Platform Introduction
- Data Dashboard Large‑screen visualization for overall status display.
- WEB Client ‑ Home Page ‑ Site Management ‑ Device Information ‑ Alarm Records ‑ Real‑time Monitoring ‑ System Management
- Mobile APP ‑ Home Page ‑ Device Statistics ‑ Device Details ‑ Alarm Statistics
PART 04 Application Scenarios
Urban Power Grid
Urban power grids feature extensive and complicated cable layouts, which bring challenges to field inspection. By deploying high‑precision sensors at cable earthing boxes and cable joints, the intelligent comprehensive cable‑earthing monitoring system collects real‑time data including earthing current, temperature and partial‑discharge parameters, and achieves full‑status perception for urban‑grid cable earthing conditions.
Industrial Park
Factories and enterprises inside industrial parks demand high power‑supply reliability and stability. This monitoring system can be deployed on high‑voltage cable lines and substation facilities within industrial parks to continuously monitor cable‑earthing status and support safe production.
Substation
Substations are core nodes of power systems, and their cable‑earthing systems are critical for stable operation. The intelligent monitoring device can be installed inside substation cable trenches and earthing boxes to monitor earthing current, temperature and other parameters for real‑time status supervision.