Subsea Power Cable Monitoring is a software product that constantly monitors the condition of subsea power cables used in offshore wind power generation and other applications 24 hours a day, 365 days a year. By monitoring the condition of the entire cable by measuring temperature distribution using optical fibers, the following advantages are provided:
- Easy identification of abnormalities in subsea power cables through temperature measurement and statistical analysis.
- No additional cost is required for temperature measurement since the subsea power cable's built-in optical fiber cable is utilized.
- Condition-based maintenance reduces inspection and maintenance costs and the risk of accidents.
Development Background and Customer Issues
Future of Offshore Wind Power Generation
The market for offshore wind power generation is poised for significant growth as a renewable energy source, largely due to the favorable wind conditions found at sea. However, when subsea power cables fail, operators face considerable challenges related to recovery efforts and potential penalties. To mitigate these risks, regular inspections and maintenance are essential to address any defects or damage that may arise from accidents.
Challenges of Inspections and Maintenance
Subsea power cables are typically buried along extensive distances on the ocean floor, making inspections and maintenance both complex and costly. The need for specialized work vessels and skilled personnel adds to the financial burden. While proactive measures are crucial to prevent accidents, traditional periodic inspections often struggle to effectively manage unexpected events.
Innovative Monitoring Solutions
To enhance safety and reduce costs, subsea power cable monitoring software has emerged as a valuable tool. This technology allows for the identification of abnormal conditions in subsea cables through temperature measurements and statistical analysis. By utilizing advanced diagnostic functions and condition visualization tools—such as real-time temperature displays—operators can pinpoint changes in cable conditions more efficiently. This proactive approach not only minimizes inspection costs but also significantly lowers the risk of sudden accidents, ensuring a more reliable offshore wind power generation system.
Details
Features
- Statistical analysis of measured temperatures makes it possible to take into account temperature changes due to transmission volume, season, etc., and displays the state of subsea power cables more prominently. This makes it easy to understand the condition of subsea power cables and identify problem areas. If detailed confirmation is required, the trend of the condition change can be checked using Excel or other tools as needed.
- Subsea power cable temperatures are measured using a portion of the multicore cable (spare optical fiber) that is used in general subsea power cables. Therefore, there is no need to install additional optical fiber cables for monitoring.
- The status of the subsea power cable is displayed on the SCADA screen (our product's integrated information server: CI Server). In addition to total monitoring integrated with alarm information, etc., the system contributes to effective consideration of actions such as burial treatment depending on the situation.
There is a close relationship between the buried condition of subsea power cables and temperature changes. By monitoring temperature changes, it is possible to determine changes in the cable's installation condition.
As an example, when buried cables are exposed underwater due to sudden events such as typhoons or fishing gear snagging, the temperature of the cable changes. This software can quickly detect this change and locate the target by measuring temperature and monitoring trends.
The software also uses our DTSX fiber optic temperature sensor for temperature measurement. The DTSX optical fiber temperature sensor is a sensing technology that takes advantage of the characteristics of optical fiber cables and can measure temperature changes over long distances and in a wide range in real time.
Effects of Introduction
Reduction of subsea power cable inspection costs
Conventional periodic inspections are conducted at least once a year using a side-scan sonar of a work vessel to check for differences in the properties of the seabed. By introducing this software, the condition of subsea power cables can be constantly monitored, greatly reducing inspection time, cost, and labor.
Reducing the Risk of Accidents
If an accident should occur due to unnoticed subsea power cable exposure, loss of electricity sales, penalties, etc. will be incurred. By constantly monitoring the condition of subsea power cables, we can quickly detect abnormalities and take countermeasures, thereby reducing the risk of unforeseen accidents and contributing to the implementation of maintenance at the optimal timing according to the condition.
(Above graph: based on our research)
Product Overview
Example of Monitoring Screen
The subsea power cable monitoring screen graphically displays the subsea cable status and statistically analyzed temperature changes. By displaying the alarm history on the same screen, it is possible to check the status changes of the subsea power cable in conjunction with the events.
System Configuration Example
This is an example of a subsea power cable monitoring software system configuration. This software works in conjunction with DTSX as a CI server application on a CI server.
- Subsea Power Cable Monitoring software: This software performs data collection and diagnosis.
- CI Server software: Collaborative Information Server
- Configuration & result display software for DTSX3000: used for DTSX configuration
- DTSX optical fiber temperature sensor system: Consists of an optical fiber temperature sensor, base module, and power supply module; an optical switch module is required when measuring two or more systems with one DTSX.
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광섬유 센서
광섬유 감지 기술은 장거리의 온도를 정확하게 측정합니다.
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Collaborative Information Server(SCADA)
Yokogawa Collaborative Information Server (CI Server)는 DX (디지털 변환)을 통한 생산 효율성의 즉각적인 개선과 운영 유지 보수의 감소를 동시에 가능하게 하면서 디지털 변환 프레임워크를 구축합니다.
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풍력발전
바람은 인간이 수 천 년 동안 어떤 방식으로든 사용해온 무한의 천연 에너지원입니다. 현재 풍력 에너지를 이용하여 전기를 생산하는 풍력 발전소가 전 세계적으로 가동되고 있습니다. 최근 수많은 풍력 터빈을 갖춘 풍력 발전 단지가 세계적으로 많이 건설되었으며, 특히 유럽에서 해상 풍력 발전소가 인기를 얻고 있습니다.
Yokogawa의 컨트롤러는 많은 풍력 발전소에서 널리 사용되고 있습니다. 또한 Yokogawa는 34 메가와트 배터리 스토리지 시스템을 사용하는 일본의 풍력 발전 단지에서 통합 모니터링 및 제어 시스템을 구현했습니다. Yokogawa는 여러 가지 풍력 발전 시스템의 원격 및 중앙 모니터링을 가능하게 하여 운영 효율성을 높이고 전력 공급의 안정적인 공급을 보장하는 다양한 측정 및 제어 기술을 제공합니다.
Downloads
Brochures
- OpreX Subsea Power Cable Monitoring (8.8 MB)
News
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Press Release 2024년12월11일 Yokogawa, 해상 풍력 발전소에서 손상을 감지하고 상태 기반 유지 관리를 가능하게 하는 OpreX Subsea Power Cable Monitoring 출시
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