As renewable energy, smart grids, and large-scale battery energy storage systems continue to expand, the safety monitoring of critical infrastructure has become more important than ever. In high-load industrial environments, abnormal cable temperature is often one of the earliest warning signs of insulation aging, local overload, equipment failure, or potential fire hazards.
The HERTZINNO HZ-DTS Distributed Fiber Optic Temperature Sensing Analyzer provides a real-time, online, and continuous temperature monitoring solution based on Raman scattering and optical time-domain reflectometry principles. Designed for demanding industrial applications, the HZ-DTS system helps operators detect overheating risks early, locate abnormal temperature points accurately, and improve the safety of power transmission, wind farms, battery storage facilities, tunnels, and other critical assets.
Distributed Temperature Sensing, also known as DTS, uses optical fiber as both the signal transmission medium and the temperature sensing element. Unlike traditional point sensors, a DTS system can measure temperature continuously along the entire length of the sensing fiber, providing full-line temperature data without monitoring blind spots.
This makes DTS technology especially suitable for applications such as:
The HERTZINNO HZ-DTS system is based on two key physical principles: Raman scattering and optical time-domain reflectometry.
When a pulsed laser is injected into the sensing fiber, the laser light interacts with molecular thermal vibrations inside the fiber core. This interaction produces Raman scattered light, including lower-frequency Stokes light and higher-frequency anti-Stokes light.
The intensity of the backward anti-Stokes signal is highly sensitive to temperature changes, while the Stokes signal is commonly used as a reference. By analyzing the relationship between these signals, the system can calculate the continuous temperature distribution along the fiber.
This enables the HZ-DTS analyzer to identify abnormal temperature rises in real time and support early warning for cable overheating, equipment failure, or fire risks.
In addition to temperature measurement, the system also needs to determine where the temperature change occurs. This is achieved through optical time-domain reflectometry, or OTDR.
The system measures the time taken for the laser pulse to travel through the sensing fiber and for the backscattered signal to return to the photodetector. Based on the speed of light in the fiber, the system calculates the exact position of the temperature event.
This allows the HZ-DTS system to provide not only temperature data, but also accurate location information for abnormal heating points.
HERTZINNO has developed the HZ-DTS-1004, HZ-DTS-1008, and HZ-DTS-1016 distributed fiber optic temperature sensing analyzers for complex industrial safety monitoring environments.
The system provides precise temperature detection, abnormal temperature identification, and accurate event localization for long-distance infrastructure.
The HZ-DTS system supports a safety warning distance of up to 13 km. The sensor cable requires no electrical power along the monitoring line, enabling safe and continuous distributed temperature measurement over long distances.
This makes it ideal for monitoring underground power cables, wind farm collection lines, and large-scale industrial facilities.
The system provides spatial positioning accuracy within 1 m and temperature accuracy of ±0.5°C. This allows operators to detect localized overheating quickly and identify the exact location of abnormal temperature events.
With continuous distributed measurement, the system helps reduce the risk of missed alarms and improves the reliability of safety monitoring.
For cable and infrastructure safety, response speed is critical. The HZ-DTS system supports fast temperature monitoring response, including 2 seconds for 2 km and less than 10 seconds for 13 km.
This enables early warning before abnormal heating develops into equipment failure or fire hazards.
The HZ-DTS analyzer is designed for low average power consumption per unit distance. It also includes 120 GB of internal storage, supporting approximately 5 to 10 years of historical data storage.
Long-term temperature trend data helps operators perform condition analysis, fault diagnosis, maintenance planning, and safety traceability.
In long-distance power transmission and distribution systems, cable overheating may be caused by insulation aging, poor joints, local overload, short circuits, or environmental changes. If abnormal temperature rises are not detected early, they may lead to serious equipment failure or fire accidents.
The HERTZINNO HZ-DTS system is suitable for underground cable temperature monitoring and full-line thermal state analysis. Optical fiber can be installed along the power cable route to continuously monitor the temperature profile of the entire line.
When an abnormal temperature fluctuation occurs, the system can quickly identify the location and issue an early warning, helping operators respond before the fault expands.
Wind farms are often located in remote areas and contain extensive underground collection cable networks. These cables operate under complex environmental and load conditions, making continuous safety monitoring essential.
By using the long-distance monitoring capability of the HZ-DTS system, operators can achieve automated and unattended temperature monitoring across the wind farm cable network. The sensing fiber can be laid alongside power cables from wind turbines to the substation, enabling continuous temperature monitoring throughout the entire route.
This helps improve wind farm operation reliability, reduce manual inspection workload, and support early detection of cable overheating risks.
Battery energy storage systems contain dense battery racks, power cables, busbars, and electrical pathways. Local short circuits, connection faults, or abnormal heat accumulation may lead to thermal runaway risks.
Because the HERTZINNO sensor cable requires no electrical power along the sensing line, it is intrinsically safe and can be routed through battery racks and key electrical areas. With 1 m spatial resolution, the system can continuously monitor localized temperature changes and identify overheating points quickly.
For battery energy storage safety, the HZ-DTS system can be used as an early warning solution to support thermal runaway prevention, linked alarms, and emergency response mechanisms.
The HERTZINNO HZ-DTS series is designed for real-time, online, and continuous temperature monitoring in high-load industrial environments. By combining Raman DTS technology, long-distance fiber sensing, accurate positioning, and fast response, the system provides a reliable solution for infrastructure safety monitoring.
The HZ-DTS system is especially suitable for:
Abnormal temperature is often the first signal of hidden electrical faults. With the HERTZINNO HZ-DTS Distributed Fiber Optic Temperature Sensing Analyzer, operators can monitor temperature changes continuously, locate risks accurately, and respond quickly before failures develop into serious safety incidents.
For smart grids, wind farms, battery storage facilities, and other critical infrastructure, HERTZINNO provides advanced distributed fiber optic sensing solutions to support safer, smarter, and more reliable operation.
Contact HERTZINNO to learn more about the HZ-DTS-1004, HZ-DTS-1008, and HZ-DTS-1016 distributed fiber optic temperature sensing analyzers.
