实时载流量计算（RTTR）

动态载流量分析(RTTR)

RTTR（电缆动态载流量分析）或DCR（动态线缆额定值）能够通过监测电流负荷、历史负载记录、发热状况及其他因素持续计算导体温度。同时还能够预测电缆稳定状态与紧急状况下最大许可负荷。根据行业标准IEC 60287、IEC 60853和有限元模型测算，可以在最大许可安全的载流容量水平运行电网。RTTR计算基于准确热量模型，该模型能够反映沿高压电力电缆的土壤/周围环境状况。

为了实现测量准确及数据可靠，我们与评级软件市场领导者合作了多年。我们将额定值结果全部集成到安尔普传感有限公司的SmartVision软件平台中并通过标准通讯协议（例如Modbus TCP、IEC 61850、IEC 60870-104、DNP3 or OPC等）轻松地与中央系统调度中心相连。

AP SENSING SUCCESS STORIES

We have hundreds of satisfied customers worldwide!

Bus Duct Monitoring in a Colocation Facility

The data center facility in this case study has evolved and is currently designed and built to operate as a modern colocation data center. The operator pursued a retrofit bus duct temperature monitoring solution, which would increase operational efficiency and provide a continuous monitoring solution for the entire length of all bus duct sections in the data halls.

Bus Duct Data Center Monitoring

Recently, a major cloud computing provider was looking for a busway temperature monitoring solution for their European hub. They were looking for a continuous monitoring solution for the busway runs between switchrooms and the data hall and implemented one AP Sensing DTS device plus specialty sensor cable for 24/7 monitoring of hotspots and localization of hotspots within 1 m. Our solution enables preventative maintenance and a quick emergency response.

Power Cable Fiber-based Current Monitoring

Comprehensive power cable monitoring is becoming increasingly important - computing cable ratings based on thermal profiling (RTTR), detecting and locating hotspots, cable faults and TPI events, and permanent cable condition monitoring of cable accessories and terminations for early detection of issues within the entire cable system. Read more about our sheath current monitoring study conducted with Brugg Cables.

Urban Power Cable Monitoring using DAS & AI

Underground HVAC power cables are often buried within urban areas, under streets, bridges and near construction sites. TSOs are in need of a suitable and feasible solution for accurate detection and classification of Third Party Interference (TPI) events close to power cables.

400kV Power Cable Circuit Monitoring in Bahrain

AP Sensing was recently selected to monitor a 400 kV power cable loop for Electricity and Water Authority (EWA) in the Kingdom of Bahrain. As part of EWA’s strategic 400 kV Transmission Development program, this project adds a crucial link to the infrastructure of the Kingdom of Bahrain and is the first 400 kV XLPE submarine cable to be installed in the Gulf Cooperation Council (GCC) region.

500kV HVDC Monitoring KEPCO

The Buk-Dangjin to Godeok underground power cable link supplies electricity in South Korea from the Dangjin power plant to Godeok, Pyeongtaek city and throughout the Seoul Metropolitan area. AP Sensing's Distributed Acoustic Sensing (DAS) technology was recently deployed by Korean Electric Power Corporation (KEPCO) to monitor the power cable link.

Power Cable Fault Detection & Location Analysis

For large power cable assets such as subsea cables, windfarm export cables or HV onshore transmission cables, finding cable faults rapidly is crucial to minimizing downtimes caused by these faults. Fiber optic Distributed Acoustic Sensing (DAS) is a key enabler for this task. In this compilation of four different projects, AP Sensing summarizes different situations and how our DAS system provided fault-finding services both offline and online.

Underground Power Cable (DAS), Germany

An AP Sensing Distributed Acoustic Sensing (DAS) system is monitoring a 6 km high-voltage power cable in Germany. A key feature of DAS is the ability to immediately detect and locate cable faults. This helps optimize transmission and distribution networks, and reduces costly and unnecessary operational costs and asset downtime.

380 KV Underground Power Cable Monitoring in Brugg

Brugg Kabel & Swissgrid selected AP Sensing to monitor a new project in Switzerland where a route of overhead lines will be replaced by underground power lines. The power cable monitoring system provides accurate temperature profiling for all power cable phases, plus indicates maximum temperatures and where these are located.

115kV Underground Power Cable Saudi Arabia June 2020

Khudriyah-2 BSP is a new grid station situated on the outskirts of Dammam city, Kingdom of Saudi Arabia. Our Distributed Temperature Sensing (DTS) system was deployed to monitor the temperatures of two 115 kV underground circuits, providing thermal profiling and insights into the the actual conductor temperature and transient statuses with Real Time Thermal Rating (RTTR).

Underground Transmission Cable Monitoring Pakistan May 2020

AP Sensing is monitoring a 132 kV underground transmission cable for Karachi Electric. This cable experiences greater loads than nominal lines, as it feeds energy to a steel mill with high energy throughputs and frequent consumption cycles. Our solution provides end-to-end temperature monitoring to reduce thermal overload and cable faults. Additionally, RTTR and our asset viewer software enhance operational insight.

Underground Power Cable Utilizing DAS March 2020

Kriegers Flak Offshore Wind November 2019

Denmark's largest offshore wind farm required a reliable, high-performance solution for protecting and monitoring cable loads and immediately detecting faults. 6 DTS units and 9 DAS units are in use for monitoring 300 km of this asset; AP Sensing's SmartVision visualization software is utilized for a real-time graphic overview of all temperature and acoustic data.

Underground Power Monitoring Skanste Riga Aug 2018

An AP Sensing fiber-optic DTS (Distributed Temperature Sensing) solution was selected to monitor power cables on two underground circuits in Latvia. This successful installation involved one DTS N4425A device with six channels, as well as SmartVision and RTTR (real time thermal rating).

Offshore Windpark DTS and DAS Monitoring SEPT 2017

The operators of an offshore wind farm located off the west coast of Denmark wanted a monitoring solution to locate cable faults immediately after they occur. They chose AP Sensing for our unique combination of DTS (Distributed Temperature Sensing) and DAS (Distributed Acoustic Sensing) capabilities.

Subsea Power Cable Monitoring with SmartVision and RTTR FEB 2017

The oil platform operator Engie needed a monitoring solution for their medium voltage (35kV) subsea power cable, which provides the power for the platform operations. AP Sensing was selected not only because of our ruggedness, reliability and superior support services, but also for our SmartVision™ and RTTR capabilities.

Subsea Power Transmission Link Sicily Calabria July 2016

The extra high voltage power links run between power stations in Sicily and Calabria, crossing the Messina straits. To monitor and protect the overland sections of this important link, AP Sensing’s fiber-optic based DTS (Distributed Temperature Sensing) solution was selected.

Olympic Park Brazil Updated Case

The Olympic Park is the main center of competition for the 2016 Summer Olympics in Rio de Janeiro. Covering over 1 million square meters and including 9 different sports facilities, a new power substation was constructed to handle the enormous power demand in the park. AP Sensing’s fiber-optic based DTS (Distributed Temperature Sensing) solution was selected to monitor this valuable infrastructure.

Wind Park Subsea Power Cable Monitoring Shanghai Oct 2010

The Donghai Bridge Wind Farm in Shanghai is the second largest bridge in the world. The wind farm is the first commercial offshore wind park, and was completed prior to the 2010 World Expo in Shanghai. AP Sensing was selected to monitor the subsea power cable with an approximate length of 15km.

Transmission and Distribution Network Updated Case

A leading Australian network operator wanted to gain monitoring insight into his distribution network: to monitor the medium-voltage power cable’s condition, identify hotspots and bottlenecks, and to minimize risks and costs for maintenance and in emergency situations. The operator can now operate his network at the highest possible safe ampacity level.

Taiwan Mass Rapid Transit Updated Case

AP Sensing was selected to monitor the power cable in a new metro tunnel. This is the first power cable temperature monitoring system to be used in the Taipei MRT. The Linear Power Series solution continually monitors the temperature of high-voltage power cables. The DTS (Distributed Temperature Sensing) solution ensures a stable, safe and efficient power transmission and distribution.

Sweden to Lithuania Subsea Cable Updated Case

Learn why AP Sensing was selected to monitor and protect the world's longest XLPE subsea cable.

Power Cable Tunnel Monitoring Shanghai Mar 2010

The World Exposition 2010 Shanghai China (Shanghai Expo) was held at the waterfront area on both sides of Huangpu River in Shanghai from May to October, 2010. AP Sensing provided its leading Distributed Temperature Sensing (DTS) system, the “Linear Power Series”, to monitor and secure the first 500kV power cables in Shanghai installed in a power cable tunnel over a distance of 20km.

Power Circuit Monitoring Czech Republic Jan 2010

In 2009 Brugg Cables installed a new 110 KV power circuit within the city limits of Prague. To protect valuable assets with Distributed Temperature Sensing (DTS) technology the end customer chose to equip the new circuit with a fiber optical sensor cable and permanently monitor the temperature profile with an AP Sensing Linear Heat Series instrument.

Network Operator Austria July 2013

In 2012, when it was time to upgrade and expand their network, Energie Steiermark selected AP Sensing as their DTS solution provider. Two of AP Sensing’s Linear Power Series DTS devices were installed, equipped with Multi Sensor Boards.

High Power Underground Cable Monitoring March 2010

Underground utilities are “the power” beneath large cities. They feed the cities with electric power, gas and water. Failures in this sensitive infrastructure are costly and therefore USI Power selected AP Sensing’s outdoor DTS instrument to permanently monitor the temperature along a 220kV power circuit connecting Manhattan and Queens.

380 KV Power Circuit Monitoring March 2011

In 2010 a new 380KV power circuit was put into operation as part of a nationwide power grid improvement. Near Florence the high voltage circuit has buried sections in close proximity to a very populated valley and a historic church. The primary route was completed in trenches filled with thermal sand. The project also included challenging road crossings that used horizontal drilling to complete the construction.

220 KV Power Circuit with Temperature Map Updated Case

A new 220KV underground power circuit traverses many different types of soil conditions along its 25 km length. AP Sensing’s fiber optic based DTS (Distributed Temperature Sensing) solution was selected by the network operator RTE (Réseaux de transport d'éléctricité), based on its reliability and ruggedness, as well as the innovative asset visualization capabilities.

Press Release Fiber Optic Sensing Association NOV 2017

The Fiber Optic Sensing Association (FOSA) today released details on more than 1,300 installations of distributed fiber optic sensing (DFOS) around the world, the largest representative sample ever published. AP Sensing is proud of our global contributions for pipeline leak detection, high voltage power cable monitoring and fire detection.