Optimum Utilization of Energy Transmission Backbone in Eastern Europe

LIOS Technology successfully provided an integrated thermal monitoring solution for a strategically important interconnection aerial line in Eastern Europe.

The LIOS DTS system was supplied to provide distributed temperature measurement by means of a fibre integrated into a replaced optical phase conductor (OPPC).

The DTS covers the entire 17 km range of the three-core bundle 400kV transmission line. The applied Optical Frequency Domain Reflectometry (OFDR) principle ensures a temperature survey even over long distances at the decisive spatial resolution of 1 m.
It provides an invariant spatial resolution along the entire sensor length and a satisfactory temperature resolution of less than 1°C, which ensures early identification and clearly measurement of atypical hotspots (e.g. tower shadows). In addition to the phase conductor temperature, the electrical and metrological data are integral parameters for the established dynamic rating system (RTTR). All data are made online available through the SCADA system of the utility.

The integrated monitoring solution generates:

• Safety – Avoid and respond appropriately to critical load situations
• Optimization  – Utilize the existing grid capacity to an optimum
• Dynamic and Flexibility – With dynamic rating to a flexible energy backbone

Get Set for EN.SURE Condition Monitoring Solutions in Dubai

Middle East Electricity is the largest platform for industry professionals from over 100 countries worldwide.

• The biggest names in the global energy industry
• More than 1,000 exhibitors from over 50 countries
• More than 17 government-supported country groups & national pavilions
• Over 46,000sqm of floor space
• 96% of visitors would recommend Middle East Electricity to their colleagues

If you are involved in sourcing, installing or purchasing products/services for the power, lighting, renewable or nuclear sectors, Middle East Electricity 2013 is the must-attend event for you.

In this show, LIOS proudly presents EN.SURE – the continuous and cost-effective monitoring solution for the electric power transmission and distribution grid which is the key factor for a successful Smart Grid implementation.

LIOS Technology GmbH is pleased to invite you to visit Middle East Electricity 2013, taking place on February 17 – 19, 2013 in Dubai.

Our booth number:  S1 D18

Dubai International Exhibition Centre

LIOS offers full range and highly reliable Distributed Temperature Sensing (DTS) systems and Real Time Thermal Rating (RTTR) solutions for ampacity predictions of energy transmission and distribution assets, consolidating into global condition monitoring solutions:

• Highly reliable DTS systems with a range of up to 20 km at a single ended multi mode fibre and with a range of up to 40 km at a single ended single mode fibre
• Customised software solutions for power cable and aerial line real-time monitoring including data storage, visualisation, Dynamic Cable Rating (RTTR) and integration into SCADA systems
• Fibre optic sensor cables (dielectric), fibre in metal tubes FIMT
• Full project engineering support during tendering and evaluation phase, commissioning and training on site as well as service and maintenance capabilities
• Complete cabinet mounted industrial solutions for our fibre optic temperature sensing systems.

Our EN.SURE products are well introduced and accepted by the leading utilities, consultants, contractors and power cable manufacturers active in the Middle East. LIOS is here to help you applying the latest global condition monitoring solutions for all of your energy transmission and distribution systems applications.

We look forward to seeing you in Dubai!

Cigre Session 2012 – The forum for electrial innovation

Now in its 44th edition, the CIGRE Session assemble more than 3000 senior executives, experts and specialists, from the worldwide Power Industry, to enhance their knowledge, to discuss new developments and innovations, and to network.
The CIGRE Session provides a unique opportunity to listen to contributions from international senior executives as well as experts and specialists through official presentations, panel discussions, technical meetings and poster sessions. The Session also offers a social program starting with a welcome drink which includes daily coffee breaks to engage further discussions in a relaxed atmosphere.

In parallel of the Session, a Technical Exhibition is being held in the same location on levels 2 and 3. The exhibition offers the opportunity to all visitors, including delegates, to discover new services, tools, equipment and materials as well as the most advanced technologies in the field of power systems.

The CIGRE Session and its Technical Exhibition bring together around 6000 senior executives, engineers and experts from the worlwide Power Industry.

Main themes will include

• Eco design of equipment
• Maintenance, refurbishment and life time of equipment
• Real time monitoring of equipment and systems
• Development of DC solutions
• Coordination between TSOs
• Public acceptance of equipment
• Integration of renewable
• Active distribution systems
• Information systems

4 main strategic directions for CIGRE technical activities are

• The Electrical Power System of the Future: super grids, smart grids…
• Making best use of the existing power system
• Focus on environment and sustainability
• Communication on power system issues to the audience

 

August 26 to 31, 2012

Paris, France (Palais des Congrès)

Registration online

Member: € 800
Non Member: € 990
Early bird rate until April 27th

Distributed Temperature Sensing has drawn high attention at the Jicable 2011 Conference in Versailles, France

Distributed Temperature Sensing (DTS) Systems for high voltage cable systems were frequently discussed in course of the recent Jicable conference, the 8^th International Conference on Power Insulated Cables.

Several papers on online condition monitoring based on fibre optic temperature sensing were presented. In more papers DTS was mentioned as being part of the high voltage cable project discussed.

 

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The necessity analysis of distributed fiber-optic temperature monitoring by Xiamen power cable alarm case study YAN Youxiang, SU Xueyuan – Xiamen power Ultility, Xiamen, Fujian; China XIAO Chuanqiang – SINDIA, Beijing; China

Dynamic rating of transmission cables
Erik JACOBSEN, Jonas Fabricius NIELSEN, Steen Beck NIELSEN – SEAS-NVE Holding, Haslev; Denmark Sven SALWIN – nkt cables A/S, Copenhagen; Denmark Karl-Heinz COHNEN, Andreas MOHRS – nkt cables GmbH, Köln; Germany

Real time load optimisation of cable based transmission grids Rasmus Schmidt OLSEN, Unnur Stella GUDMUNDSDÓTTIR – Energinet.dk, Fredericia; Denmark Joachim HOLBOELL – Technical University of Denmark, Kongens Lyngby; Denmark

Read more about Jicable in general:

June 2011 Versailles Congress Centre – Jicable’11 – 8^th International Conference on Power Insulated Cables

What is Jicable’11?
Jicable ’11 is an international forum for the exchange of information in the fields of research, industrial development, installation, operation and diagnoses relating to insulated power cables and their accessories from low voltage and special cables up to ultra high voltage cables and cables of new technologies.

Why is Jicable’11 important?

Insulated power cables are increasingly used in electrical power transmission and distribution networks. This is due to the significant progress achieved in the development of new technologies with higher performances, and supported by increasing environmental pressure. Cables are recognised as a reliable means for the transportation and distribution of electrical energy. Jicable’11 will allow in-depth analysis of the State-of-the-Art and future perspectives : new materials, evolution in technologies, improvements in fabrication process, improvement of maintenance policies and remaining life estimation, lessons learned from service experience, dielectric phenomena, thermal and thermo-mechanical behaviour, new innovative technical solutions for high power transmission : new superconductive materials as well as a closer look at major submarine cable projects connecting High Voltage networks in many countries.

Who will be taking part in Jicable’11?

As in past Jicable conferences held in 1984, 1987, 1991, 1995, 1999, 2003 and 2007 (581 delegates from 48 countries), Jicable’11 will prove very useful to the following segments of the cable industry : researchers, engineers, decision-makers, raw materials suppliers, manufacturers, consultants, installers and users.

The following topics will be discussed:

• LV and MV Cables Systems
• HV and EHV Cables Systems
• Submarine Cables
• Economy and costs of Cable Systems
• Ageing, Diagnosis, Maintenance, Remaining Life Estimation and Management
• Cables for the Future
• Technical challenges encountered with cable systems
• Industrial and Special Cables
• Cables, environment and sustainable development
• Design
• Testing Methods

Jicable 2011 was organized with the support of:

• S.E.E. – Société de l’Électricité, de l’Électronique et des Technologies de l’Information et de la Communication
• CIGRÉ – International Council on Large Electric Systems
• ERDF – Électricité Réseau Distribution France
• RTE – Réseau de Transport d’Électricité
• SYCABEL – Syndicat Professionnel des Fabricants de Fils et Câbles Électriques
• SERCE – Syndicat des Entreprises de Génie Électrique et Climatique

The Jicable’s Booklet

Discover the Jicable’s Booklet which contains all practical information about Jicable including registration procedures and technical programme

Download the Jicable’s Booklet

Case Studies for Industrial Distributed Temperature Sensing in Electrical Transmission and Distribution Systems

LIOS Technology is actively deploying its DTS sensor technology in various industrial applications and has already equipped successfully more than 2000 permanent system installations worldwide. Today we highlight some projects in Power Cable and Transmission Line Monitoring in the following case studies.

Industrial Application: High Voltage Power Cable Monitoring – Smartgrid

		Beijing: Long Distance Cable Temperature Monitoring System for the Olympic City 2008 Beijing This project was the premiere of a successful cooperation between Brugg Cables and LIOS Technology. Both partners are currently developing further projects for power cable monitoring even with integrated dynamic rating systems (RTTR).

		Burbo Offshore Windfarm – Distributed Temperature Monitoring of Long Distance Submarine Cables Distributed temperature sensing (DTS) of long distance power cables is shown to provide valuable information for cable design optimisation and proper operation of wind farms. The long range sensing is enabled by using the Raman-OFDR (optical frequency domain reflectometry) technology in single-mode fibres. Raman-OFDR uses a modulated continuous wave laser for detection. The low peak power minimizes stimulated Raman-scattering in single-mode fibres making accurate temperature sensing over long distances feasible.

		Graz: Reliable Energy Supply for Graz, Austria The new cable installation is one of the city’s main transmission lines and is heavily loaded. In order to optimize the transmission performance and to guarantee its secure reliability, the cable installation has been equipped with large scale cross-bonding systems at its sheath. In addition, by the help of the LIOS temperature monitoring system (DTS), the level of backup capacity can be assessed.

Real-Time Cable Thermal Rating (RTTR) went on-line at a tunnel near Stockholm, Sweden In October 2006 the commissioning of the integrated condition monitoring system (CMS) for real-time monitoring of cables was successfully completed. Together with a Distributed Temperature Sensor (DTS) a parallel run of cables installed in a tunnel near Stockholm (Sweden) is being continuously rated by RTTR.

Condition Monitoring of high voltage cables: Turning information into extra capacity

Continuous and cost-effective monitoring of the electric transmission and distribution grid is the essential success factor of Smart Grid implementations. Increasing demand for power is forcing power utilities to load power cables to their physical limit, and safety and efficiency concerns are making it more and more critical for operators to understand what is happening thermally both inside the cables themselves, and along the cable route. During high-load conditions and under emergency circumstances (such as when a failure occurs in a segment of the grid and power must be shifted to other sections to compensate) it often becomes necessary to load cables right up to the limits permitted by the relevant regulations.

High voltage cable installation with attached fibre optic sensor cable in Moscow. Continuous and cost-effective monitoring of the electric transmission and distribution grid is the essential success factor of Smart Grid implementations.

In these operational situations, it must be ensured that maximum temperature limits are not exceeded.

LIOS Technology GmbH (www.lios-tech.com) is the global leader in the development and supply of state of the art frequency domain based Distributed Temperature Sensing systems. The LIOS DTS product line comprises a range of real-time fibre optic based linear temperature measuring devices. LIOS offers Real Time Thermal Rating/ Dynamic Cable Rating (RTTR) solutions for ampacity predictions of the power cable and overhead transmission line installation transparently integrated with its field proven DTS systems.

New Russian standard, the smart way – visit LIOS at CABEX’2010

LIOS Technology GmbH- Linear Optical Sensors is pleased to invite you to attend CABEX’2010 – 9th International specialized exhibition for cables, wires, fastening hardware, and installation technologies, taking place March 16 – March 19, 2010 at the Pavilion 4, EcoCentre Sokolniki, Moscow.

Booth number: D1214

In cooperation with our partner Systec we proudly present continuous and cost-effective monitoring solutions for the electric transmission and distribution grid, which are the essential success factors of Smart Grid implementations.

The LIOS DTS product line comprises a range of real-time fibre optic based linear temperature measuring devices (Distributed Temperature Sensing, DTS). LIOS offers Real Time Thermal Rating/ Dynamic Cable Rating (RTTR/ DCR) solutions for ampacity predictions of the power cable and overhead transmission line installation transparently integrated with its field proven DTS systems.

We invite you to the world of Russian and international top technology trends for cables, wires, fastening hardware, testing means and methods, scientific research and elaborations, cables and wires mounting and installation technologies, standardization and certification of cabling and wiring and problems of ecological monitoring.

Monitoring System for Overhead Line Conductors. Meeting the demands of a changing power environment

Providing sufficient electrical power reliably requires ongoing monitoring of temperatures within overhead transmission lines that are more susceptible to atmospheric changes than buried cables.  Winds, direct sunshine, ambient temperature, rain, ice and snow all affect the temperature of exposed overhead lines and can dramatically impact load limits they are capable of carrying. The fibre optic monitoring system for overhead lines is an inexpensive and highly reliable method that enables real-time monitoring of an entire network or of selected critical spans.

The easy-to-install, low-maintenance system offers a multitude of advantages. By enabling dynamic analysis of network structure, it increases the overall safety and reliability of the grid. It facilitates applying dynamic reactions to transmission requests, resulting in more flexible capacity and revenue management in both the short and long term. And the potential for cost-savings is enormous: downtimes and blackouts can be avoided, and the need for new lines and upgrades (e.g. increasing the height of overhead transmission lines) can be greatly reduced.

Customers dynamically rating the critical spans of their overhead line system can also increase earnings by activating previously unused resources in existing power lines. Dynamic metering of grid capacity and maximized transmission capacity make it possible to respond quickly and dynamically to transmission requests. As new sources of energy are added to the grid, precise load predictions are possible and it is easier to react quickly to overload conditions.

With the help of dynamic network-structure analysis, temperature profile can be monitored over span fields and fittings, depending on the length of the sensor. Load parameters are bundled and transmitted to network control stations online, allowing for real time thermal rating – which means real time supervision of network capacity. This makes it possible to predict load precisely and to avoid wire fatigue caused by repeated high thermal loads. Because decisions based on thermal load often influence upgrading or installation of lines, this translates into better control of grid and wire conditions, as well as optimal sag control and line clearance without requiring new construction activities.

De facto standard for seamless DTS integration: Direct link to SCADA

The intrinsic temperature measuring system DTS based on LIOS Technology’s design, with fibre optic sensors either installed within the power cable’s cross section (FIMT – Fibre in metal tube ) or attached to the exterior of the cable, makes it possible to record the temperature profile along an entire cable route continuously, and to pinpoint the exact location of hot spots within a metre.

Most commonly the measured temperature profile data is transmitted via standard interfaces from systems of the DTS as required, and be either displayed or further processed by PC, PLC or SCADA systems. As a result of the increasing demands placed on the ability to network and integrate measuring systems into management systems, LIOS offers network components that summarise DTS data from several DTS units and transport or convert it to the required network standards and protocols like Modbus, DNP3, IEC60870-5 or XML based data interfaces (e.g. POSC).

Equipped with the Embedded Communication Module (ECM) the Distributed Temperature Sensing (DTS) evaluation unit is accessible by Ethernet/ LAN, holds its own IP address and is compatible with DHCP.
The on-board storage facility of measurement data provides automatic buffering of network break downs. It can handle multiple protocols, so the DTS can be directly linked to PLC or SCADA systems and communicates in various industrial protocol standards providing measured data and customised alarm information.
Hereby, the evaluation unit communicates as a TCP /IP server with several clients.

Features of the embedded communication module of the LIOS DTS controller:

• Configuration and operation of the DTS via two independent channels:
  • RS232
  • Ethernet TCP/IP
• Onboard storage of measurement data
  • Buffers up to 72 hours of measurement data and initiates data transfer automatically after communication link was re-established
  • Individual file access to measurement data through CHARON_02 (onboard data storage 1 GB)
• Allows to operate individual Plug-In-Interfaces for customer specific protocol solutions
  • The DTS can communicate in parallel with its proprietary protocol and one or more customer specific protocols like DNP3, IEC60870-5-104, IEC61850, POSC WITSML, Modbus (Master/Slave) etc.
  • Individual assignments for protocols and client addresses (IP) possible
• Ethernet communication to and from clients with high bandwidth
• Module comes with built-in user configurable Firewall and enables reliable operation even in WAN’s
• Secure data transmission and individual authorisation according TLS- Standard (RFC 2246)

The most common industrial protocols used in electrical systems worldwide are introduced in the following section. However, also other protocol standards are available or can be implemented for the ECM. Please contact us in case of questions.

MODBUS
The MODBUS protocol was published by Modicon in 1979. It is a quite simple single master – multiple slave protocol widely used in general purpose SCADA applications. It provides binary (bit) and 16-bit integer data, but no floating point values, polled by the master, i.e. the slave cannot send data spontaneously. The protocol specification is openly published and royalty-free. In the DTS ECM, TCP/IP is used as transport layer.

IEC 60870-5
IEC 60870-5 provides a communication profile for sending basic Telecontrol messages between systems. It was developed by the IEC Technical Committee 57 (Working Group 03) as a protocol standard for Telecontrol, Teleprotection, and associated telecommunications for electric power systems. The result of this work is IEC 60870-5. The protocol provides inter alia bit, integer and floating point data with or without time stamps. Data is transmitted from controlled stations (slaves) either by polling or spontaneously. In the ECM the IEC 60870-5-104 companion standard, defining standard TCP/IP connections as transport layer, is used.

DNP3
DNP3 (Distributed Networking Protocol) is an open standard managed by the DNP User Group. Initially; the DNP3 protocol was developed by Westronic (now GE-Harris) in 1993. It is widely used in electrical systems worldwide, including North and South America, the UK, Southeast Asia, South Africa, Australia, and New Zealand. It has gained wider use beyond electrical utilities, e.g. for water supply as well. The DNP3 protocol is also referenced in IEEE Std. 1379-2000, which recommends a set of best practices for implementing modern SCADA Master-RTU/IED communication links.
The protocol provides bit, integer and floating point data and time stamps. Data is transmitted from the outstation (slave) either by polling or spontaneously. The ECM uses TCP/IP as transport layer, but even in this mode the DNP3 protocol additionally uses its own protocol stack for synchronisation and error checking. This provides extra security.

IEEE Lays Groundwork for Adoption of DNP3 Protocol as New IEEE Standard
IEEE, the world’s leading professional association for the advancement of technology announced that work is underway for the formal recognition of Distributed Network Protocol (DNP3) as an IEEE standard. Designated as IEEE P1815, the standard will promote interoperability across hundreds of operational systems with thousands of installed devices, as well as strengthening security protocols while maintaining compatibility with existing object models.

Seen at EnergyCentral’ T&D News 19 January 2010

Smart Grid starts at TPC 345kV substation in Taiwan

State-run Taiwan Power Co. (TPC) has equipped its 345kV substation HouLi with a real time condition monitoring DTS system providing current ratings and ampacity predictions. A rugged fiber optic sensor cable is attached to all phases of the 4 cable systems, the tie lines as well as the outdoor terminations for real time distributed temperature sensing. Furthermore, the substation’s service tunnels are controlled by DTS in order to activate forced ventilation.

LIOS Technology has provided its integrated Real Time Thermal Rating (RTTR) solution which offers real time ampacity predictions and emergency ratings based on the actual temperature readings and the mathematical model of each configured cable section following the IEC 60287 and IEC 60853 international standards. LIOS’ dynamic cable rating system is a powerful tool for steady state and even transient operations to derive the conductor temperatures of each high voltage power cable phase. Based on the thermal history of the monitored circuits RTTR indicate emergency ratings to ensure save and stable grid operation even during peak hours and dynamic load demands.

By adding continuous and cost – effective monitoring of the electric transmission and distribution grid TPC consequently follows its Smart Grid strategy and helps to utilize electrical energy more efficiently.

Related posts:

• Essential for Smart Grid: Distributed Temperature Sensing for Real Time Power Cable and Overhead Line Monitoring
• Distributed Temperature Sensing Systems (DTS) are optoelectronic devices which measure temperatures by means of optical fibres functioning as linear sensors.