Agile Digital Substations PDF

AGILE DIGITAL SUBSTATIONS Releasing the potential of digital technologies GRID Scalable solutions to optimise and enhance your transmission system The complete...

AGILE DIGITAL SUBSTATIONS Releasing the potential of digital technologies GRID Scalable solutions to optimise and enhance your transmission system The complete F digital substation D DS Agile switches E DS Agile A300 Remote access and telecommunication G Grid control room substation gateway B IEC 61850 Ethernet C DS Agile substation network bay controller Cyber security solution G F F H I E I F C Central Hardwire link K access D server A Process bus B M Condition IEC 61850 monitoring unit B A Station bus D IEC 61850 J M Condition F monitoring M Analog unit merging unit M Numerical L A merging unit M Switchgear H System Configuration controlling Editor (SCE) unit I DS Agile Operator Interface (OI) Fibre optic link Condition M J DS Agile A400 WACU / SACU monitoring unit A Smart primary equipment K MiCOM protection and other L Precision time protocol IED integration M Merging units integration After more than 15 years of advanced research and projects around the world, Alstom Grid’s digital substations now deliver the great potential of this technology: interoperability, ease of configuration, maximised reliability and availability, real-time performance, Smart Grid communications capabilities and reduced cost of ownership. Solution continuity from conventional through to non-conventional substations is ensured, thanks to IEC 61850 compliance. 02 03  An investment with many rewards Alstom Grid agile digital substations Based on the IEC 61850 unifying communication standard for complete information sharing and interoperability allowing future modernisation and the integration of new systems Digital Control Systems connected with the primary bays via a process bus built on redundant Ethernet architectures. Merging and control units collect and translate measurements, indications and commands (I/O) from the primary equipment into sampled values and GOOSE messages and vice-versa Digital instrument transformers and HMI (Human Machine Interface)-integrated condition monitoring systems for the primary equipment can be added, providing superior substation situational awareness locally and remotely Michel Augonnet, Senior Vice-President, Alstom Grid Commercial Solutions Optimise your operational costs Extended communication for more Asset managers now have a critical tool that, with less wiring and fewer accurate substation awareness… commissioning tests, optimises preventive maintenance and can extend the lifetime of the entire substation, including third party plant items. Digital technologies have brought many benefits to the strategic field of transmission Alstom Grid’s digital solutions: networks and specifically in substations. Digital technology at station bus level is Maximise the reliability of your substation widespread today and has also extended to process buses at the primary equipment Operate assets more efficiently and safely close to the limits of the system level. As a company committed to research and a key player in the industry, Alstom Optimise maintenance, repair and retrofit of equipment with minimal outages Grid has worked with the utility and industry community towards greater standardisation and use of the common standard IEC 61850 since 1995. Following years of extensive laboratory research, rigorous test platform acceptance programmes and more than 3,000 digital control systems installed worldwide, Alstom Grid digital substation solutions are now ready for use in an integrated architecture combining cutting-edge hardware, software and communication with technology Complete and adaptable solutions engineering to IEC 61850 specification standards. Alstom Grid’s digital substation solutions are available for: As a global leader in electrical grids, offering a complete range of digital hardware and Retrofit and extension schemes, as they reinforce conventional tools and systems software, Alstom Grid is uniquely placed to deliver tested, interoperable solutions based New substations on optical fibre and digital communications that will remain sustainable over time and thus provide the significant benefits systems operators are entitled to expect. The particular solution and architecture can be adjusted to meet your operational needs according to how critical your asset and substation is to the network. Throughout these pages, I invite you to discover the principles and main benefits of Alstom Grid’s agile digital substations, how the architecture is built and how we can Extensions and modifications are easier, as the substation functions via software, tailor our technology to your needs. not hardware. 04 05  Driving digital substations IEC 61850: a crucial technology enabler Modern sensors and other Intelligent Electronic Devices (IEDs) functionalities that are not supported in legacy communication must be connected to communicate within the substation protocols. and over the greater grid system. In the past, there were many different protocols requiring much effort to make them IEC 61850 defines a domain specific data model (data and communicate with each other. Insufficient standardisation, services) supporting all functions required in substations. These fear of degraded reliability and lack of return on investment unique characteristics can significantly reduce costs associated slowed down the emergence of the fully digital substation. But with designing, installing, commissioning and operating power today, the IEC 61850 standard makes it possible to facilitate systems. interoperability between different equipment and suppliers. Alstom Grid’s digital substation - the benefits IEC 61850 is designed for interoperability and longevity, removing Introduced in 2004, the IEC 61850 standard is increasingly the dependence on one supplier and one generation of IEDs. Increased reliability and availability Investment optimisation accepted across the world, as its main objective is to ensure The extensive self-diagnostic capabilities of digital devices ensure The capital cost of investment projects is reduced on many fronts: interoperability between equipment coming from various IEC 61850-8-1 the maximised availability of the substation, as well as its full suite savings on the time needed to engineer and install substations suppliers. IEC 61850 continues to evolve and encompass the IEC 61850-8-1 is the relevant standard for the station bus. It of functionalities: any degradation in the performance of an asset is reduced real-estate needs needs identified by the industry’s user group (UCA UG), ensuring defines the means to generate and present reports which may pinpointed in real-time. copper cabling is cut by up to 80% through the use of that it caters to all substation needs. IEC 61850 is rapidly being be subscribed to by other devices and HMIs (Human Machine optical fibre enriched as new application areas are continually added, most Interfaces) as well as the way to communicate peer-to-peer. The The inherent redundancy built into the system can be employed to asset optimisation tools allow faster targeting of weak areas notably IEC 61850-8-1 and IEC 61850-9-2. latter is achieved by the exchange of GOOSE messages between self-heal maloperation, and permits troubleshooting without the which need to be reinforced, allowing for reduced operational devices on the LAN (Local Area Network). need for primary system outage. costs This permits the full digitalisation of signals in a substation so that large amounts of data can be managed and communicated IEC 61850-9-2 Optimised operation of assets Easier renovation and extension of existing for the real-time management of a modern power grid - a IEC 61850-9-2 is the part of the standard that brings non- The intelligence within digital substation schemes allows close substations smarter grid. conventional instrument transformer technology into play, monitoring of the load capacity of plant equipment, based Interoperable solutions and the use of fibre optics instead of breaking the constraints of conventional CTs and VTs. It is on their design ratings. This dynamic load analysis means copper wires reduce the duration and costs of unavailability IEC 61850 particularly important for the process bus, as it describes how that lines, cables, transformers and other grid equipment can of substations during the refurbishment phase of secondary IEC 61850 is the international standard for Ethernet-based analog signals such as phase currents and voltages can be operate closer to their limits. equipment. This also applies to extension works. communication in substations. It is more than just a protocol, exchanged as sampled values. it is a comprehensive standard designed for utilities, to deliver Improved safety Standardisation and interoperability Removal of wired cross-site CT (Current Transformer) circuits Being IEC 61850 compliant, Alstom Grid digital solutions and reduces the risk of fatal injury due to inadvertent opening of substations are designed to be interoperable with other vendors’ the circuit by personnel equipment, with a strong degree of standardisation at the interface Absence of oil in transformers reduces explosion risks Advanced self-monitoring of substation assets ensures that level of secondary equipment systems. Denis Chatrefou, they are operating within safe limits Improved communication capabilities Alstom Grid Research & Development, Digital Substation Coordination Data exchange between intelligent devices, intra and inter- “As a driving force in the development of the standard, Alstom Grid is proactive in the support, maintenance and Reduced maintenance costs substation, is optimised through Ethernet communications. development of IEC 61850 and its components. We have developed an integration platform for interoperability The digital substation closely monitors all substation assets Smart local and wide area control units allow data exchanges tests of digital systems in their real configuration before installation in the field. We will continue to work to in terms of operational conditions, effective load capacity and between voltage levels within substations and between make sure that this standard delivers its significant potential benefits to transmission and distribution system asset health indicators. Intelligent systems analyse the data substations. operators. We will also endeavour to develop technologies and solutions that are instantly interoperable with and provide recommendations on maintenance and repair Direct inter-substation communication without the need to other vendors’ equipment and compatible with future generations of software and hardware”. actions. This allows a shift to predictive maintenance, avoiding transit via a control centre reduces the response times, enabling unplanned outages and emergency repair costs. fast, real-time applications. 06 07  The architecture of Alstom Grid digital substations A typical Alstom Grid digital substation solution interoperable solutions, stability applications, Using industry norms and Alstom Grid’s digital substations rely on the newest DS Agile incorporates many components, all designed for optimal inter-operability, data retrieval, protection wide area protection & control plans, and more globally, substation situation awareness. enabling technologies to their fullest, Alstom Grid’s global digital control system that provides the complete architecture, and control capability and remote settings. Its experts now bring the digital architecture is organised on three levels: Key components are: the protection relays, bay connecting all the components, together and with the operator controllers, switches and Ethernet network, substation to the market. Whether for incremental interface, through an IEC 61850 Ethernet network. 1. The process level measurement and recording devices, substation refurbishment, or complete A digital substation is based on a communicating proxy, the operator user interface within the green-field installations, Alstom DS Agile digital substation solutions are highly scalable in terms architecture, where real-time operational measurements and other data are polled from the substation control room, time synchronisation units, security applications and the panels has the equipment, the system of equipment, functions, architecture and services. primary system by sensors embedded within the where all this equipment is commissioned and delivery capability and project management expertise to be primary system. This data is communicated to energised.IEC 61850 communications enable operational first time and on- devices which must act on those measurements complete integration between devices. It ensures time. The component parts of (pressure or temperatures in GIS switchgear, optimal use of the information for the continuity this offer are detailed in further current and voltage measurements) via a “process and reliability of electrical grid operations in sections: bus”. secured access situations. Most important is that smart devices and systems 3. The station control area Measure within the substation, (protection relays, recorders, The digital substation station bus is much pages 10 & 11 phasor measurement units, bay controllers, wide more than a traditional SCADA bus, as it area controllers) can immediately process this permits multiple clients to exchange data, The digital substation architecture data. By subscribing as clients to this data flow supports peer-to-peer device communication can be divided into three levels over an Ethernet process bus, the information and links to gateways for inter-substation from the “eyes and ears” of the power system wide-area communication. Remote access is distributed and communicated much more WAN Grid control rooms efficiently to the bay level than in conventional hardwired schemes. The IEDs perform their time critical functions such as protection, point-on-wave switching Convert pages 12 & 13 The station control area Advanced substation situation awareness HMI supervision and other tasks via direct Communication within substation and control system, The process bus is also the link by which the interaction with the process bus. coordination with the substation operational functions and Gateway primary equipment information from out in the the station-level support functions. yard travels back to the substation control room. Additionally, other clients in the substation may require information-sharing of some or STATION Bus In a fully digital architecture, control commands all of this data. For example, protection and Switches are also routed to the primary devices via the control schemes may be distributed amongst The protection and control level process bus. multiple IEDs. Protect Protection and control of substation equipment includes IEDs traditionally called “secondary equipment” pages 14 & 15 (protections, measurement devices, bay controllers, Bay Protection Phasor data Wide area control The process bus, therefore, enables time-critical There is also the need to distribute the recorders...) controllers relays concentration services. information to local or remotely-stationed Process Bus control operators so they can visualise the Switches 2. The protection and control level operational status of the substation in real- The primary equipment process level Between the process bus and the station bus are time. This requires substation HMIs, proxy Analogue Capture of voltage and current signals, consolidation, and digital Conditioning devices identified as “secondary equipment”. server links to remote HMIs and control processing, and transmission of data via optical fibres: merging monitoring servers. One or more workstations can Control & units units intelligent primary devices (electronic power and instrument transformers, circuit-breakers, disconnectors) In the digital substation, these devices are apply the instructions assigned by regional and optic fibre have replaced traditional CT/VT systems and IEDs (intelligent electronic devices), interacting dispatchers, or can be used as an engineering Monitor conventional cable wiring. with: the field via the process bus; with other workstation for IED configuration, or for local pages 16-18 Primary equipment with peer devices in the bay; with other bays, and concentration and archiving of power system embedded digital sensors with the digital control system via the station data. On-line condition monitoring may have bus. They are designed to provide the Smart specific workstations for alerts and to manage Figure 1 Generic overview of a digital substation Grid applications demanded by utilities via the database history of each primary device. real-time and secure equipment. They provide 08 09 Alstom Grid’s offer... Measure Digital instrument Optical sensors use the Faraday effect. A fibre optic Alstom Grid COSI (COmpact Sensor Intelligence) solutions: Customer benefits Enhanced safety: no risk of explosion, no wired CT transformers loop sensor carrying a polarised light beam encircles the Device Description AIS GIS AC DC power conductor. This light will experience an angular secondary circuit running cross-site deflection due to the magnetic field, generated by the Optical Faraday optical technology Measurement precision coupled with protection primary current flow. The sensor’s intelligence is to Sensor devices: COSI-CT: Composite optical CT dynamic range accurately determine the primary current based on the Decades of extensive research by Alstom Grid has delivered real-time optical measurement. COSI-CT F3: Flexible, portable No saturation, ferroresonance or unwanted transients. proven non-conventional instrument transformers, designed Rogowski sensors dispense with the conventional CT optical current sensor Long-term accuracy to be accurate, intelligent, safe, cost-effective – and very core and instead implement windings as tracks on a Rogowski COSI-RECT: Rogowski coil for Outstanding seismic resilience importantly – core-less. multi-layer printed circuit board. Four quadrants of the Sensor CT current measurement Unparalleled reliability and availability with full self- board are clamped together to form a toroid around the COSI-Rogoflex: Flexible diagnostics primary conductor. The sensor output becomes a low- Rogowski current sensor The root of many of the limitations of conventional instrument level voltage measurement, which can be accurately Lightweight, compact and flexible transformers is their reliance on an iron core. The core is a correlated to the primary current. Capacitive COSI-VT: AIS voltage Minimal inventory, near-zero maintenance source of inaccuracy, due to the need to magnetise it, but not to Capacitive dividers dispense with the conventional VT Sensor VT transformers Harmonic monitoring overflux it. In the case of conventional CTs, achieving the low- core. Capacitors are built from slimline film stacks for COSI-CEVT: GIS voltage Online condition monitoring level accuracy and dynamic range to satisfy both measurement AIS sensors or printed circuit board electrodes laid on transformers the interior of the enclosure for GIS sensors. and protection duties is a challenge. Conventional VTs may experience ferroresonance phenomena resulting in thermal overstressing. Instead of an iron core, the translation from primary to secondary measurement uses optical, Rogowski or capacitive technology, with the optimal choice for AIS (air-insulated substation) and GIS (Gas-Insulated Substation) equipment driven by the size of the respective digital device, which allows size optimisation for the switchgear. A wide array of sensors monitor conditions in real-time thanks to multiple applications: diagnostic analysis, asset management and condition-based maintenance. COSI-CT COSI-CT-F3 COSI-RECT COSI-CEVT 10 11 Alstom Grid’s offer... Convert Converters Merging units Device DS Agile SCU Description Switchgear controller unit: Customer benefits Alstom Grid digital substations optimise the amount of Merging units perform all the digital data processing necessary Interfaces with all types of power system current and Processes the I/O signals from/to the electronics residing in potentially harsh outdoor environments. to produce a precise, time-aligned output data stream of primary switchgear as IEC 61850-8-1 voltage sensors, whether digital instrument transformers sampled values according to the IEC 61850-9-2 standard. This GOOSE messages (DIT) or conventional CT/VT The primary converters convert analog signals from the primary processing includes tasks such as sampling, analog to digital MU Agile AMU Standalone compact merging unit: Ensures accuracy of protection applications up to highest equipment into digital signals. Primary converters can be installed conversion, scaling, precise real-time referencing and message Digitising of conventional 1A/5A and fault currents and X/R ratios either directly in primary plant hardware or in cubicles. formatting. 100/120V analog secondary circuits Ensures measurement accuracy MU Agile XMU800 Modular digital merging unit: Digital controllers (switch control The design may vary with the applied Interfaces with multiple primary converters units) are the fast, real-time interface technology of the instrument transformers in the field to switchgear, mounted close to the (eg: optical, Rogowski, voltage dividers, or MU Agile XMU820 Modular merging unit: plant which they command. They conventional wound instrument transformers), Interfaces with digital and conventional instrument transformers replace the hardwiring of inputs and the switchgear type, mounting space available outputs with an Ethernet interface to and also with the preferred substation MU Agile NXMU Modular merging unit: Interfaces with COSI optical CTs and the yard. Primary converter communication architecture. conventional VTs MU Agile Digital pioneers in the Focus on 3 projects Federal Grid Company RTE (France), Saumade GETCO (India), Jambua field of Unified Energy System (Russia), Nadezhda - - 245 kV GIS substation with hybrid sensors, MU AIS Substation 245 kV COSI-CT based on optical With multiple reference sites in different countries, 110 kV double-bus and and distance protection sensor technology (Faraday effect), 220 kV breaker and a half DIT based on Rogowski coils connected to the merging unit and Alstom Grid has been involved in the development substation and capacitors, connected to interfaced digitally with Alstom Grid of the various components of the digital substation Supply of process bus protection the merging unit and interfacing distance protection by IEC 61850-9- for many years. We have gained precious experience relays and bay controllers, digital digitally with distance protection 2 process bus. in our IEC 61850 pilot projects that puts us in a control systems, CCS panels, relays provided by Alstom Grid and strong position to meet the demands of utilities for merging units and engineering. a third party. instantaneous operability and backward compatibility of multi-vendor equipment. 12 13 Alstom Grid’s offer... Protect Digital protection relays Alstom MiCOM is a complete range of IEDs designed for digital substation Also available, the MiCOM P847 phasor measurement unit architectures. The full range of transmission protection is included, from the simplest offers industry-leading accuracy and dynamic response to Customer benefits back-up device, to subcycle tripping main protection schemes. In a fully-digital frequency excursions. Proven algorithms of conventional applications remain architecture, the relays receive currents and voltages as IEC 61850-9-2 sampled values unchanged, no need for reapproval and issue trip or alarm signals using IEC 61850-8-1 GOOSE. The flexibility of MiCOM The MiCOM P594 provides the precision clock source reference Time-critical performance is maintained irrespective allows you to adopt new technology tailored to match your pace of change – from for merging units and phasor measurement units in the of the architecture, number of functions enabled, or initial station bus digital integration, up to full station and process bus schemes. The substation. extent of logic programmed following table indicates the typical relays selected, and their main functions: Safer test and maintenance operations for technicians Alstom MiCOM IEDs extend their supervision facilities to – no wired CT secondary circuit exists Device Principal Application address and check the plausibility of the incoming sampled Accurate measurement capabilities – as accurate as MiCOM Alstom P446 Subcycle distance protection with integral teleprotection and one values from the process bus. This addresses the fact that the the incoming -9-2 data itself or two breaker reclosing traditional task of current and voltage sampling is now external Station bus communication redundancy available: MiCOM Alstom P546 Line differential for 2 or 3 terminal lines with subcycle distance to the device, and is connected via Ethernet. The supervision PRP (Parallel Redundancy Protocol) and RSTP (Rapid and one or two breaker reclosing compensates for any latency or mismatch in the network, Spanning Tree Protocol) MiCOM Alstom P645 Transformer differential for up to 5 ends with advanced loss-of- provides ride-through intelligent compensation in the event life thermal monitoring of several missing samples or jitter, and blocks/alarms if the MiCOM Alstom P746 Digital busbar protection for centralised smaller schemes up to quality of incoming data compromises the secure and reliable & P743 large decentralised bus configurations operation of the IED. MiCOM Alstom P841 Transmission line terminal IED for backup, reclose and breaker fail management MiCOM Alstom C264P One-box solution feeder protection with control and bay mimic diagram Over 215,000 Alstom MiCOM P40 relays protect critical infrastructures worldwide MiCOM IEDs MiCOM P40 Agile 14 15 Alstom Grid’s offer... Control and Monitor Alstom Grid’s DS Agile range is the latest generation of substation Digital Control Systems (DCS). It relies on fast Redundant architectures Alstom’s digital substation sensors and control systems work seamlessly with its software platforms for grid operator Customer benefits Ethernet networks with IEC 61850 communication standards DS Agile architectures can be set up as a self-healing ring (HSR control rooms, allowing a real-time data exchange both at the Reduced unscheduled outages and repair times and offers topology-orientated automation combined with protocol) or dual-homing star (PRP protocol); both of which are substation operational data level and at the asset management Reduced routine maintenance costs electrical security to minimise outages. fully redundant, eliminating outages. data level. This substation / control room communication Increased equipment life expectancy introduces smart grid capabilities to the network, bringing Frees-up skilled personnel for remote diagnostics and DS Agile can be tailored either to single substations or to a Fibre optical networks link all the system’s components together complete synergy between field equipment operations and operation centres harmonised system across multiple substations. and with the operator interface (HMI), via a full range of network management systems. Ethernet switches that provide full reliability and interoperability. Cyber security The networks can be local to the substation or they can Substation automation Devices Applications interconnect several dispersed substations, and all are linked to DS Agile switches GOOSE switches the grid control room through gateway solutions. The digital substation brings increased cyber security capabilities, Devices Applications as intrusion protection and protection against virus attacks are (H-series) External (rack) or internal DS Agile bay Alstom’s IEC 61850-compliant bay Inter-substation or inter-voltage level automation exchanges integrated in switches and IEDs. Cyber security provides protection controllers controllers, like the C264, provide Interoperable standard protocols (PRP/ GOOSE messages for: against unauthorised access to equipment and unauthorised (C-series) embedded or programmable fast HSR) transfer, modification or destruction of data – whether deliberate or automation (automatic voltage regulation, Gigabit switches Logic selectivity accidental. synchro-check, auto-recloser, busbar transfer, etc.), backup feeder protection, IEEE 1588 transparent clock Auto-reclose and fault location data concentrator, events and waveform Automatic setting of the relays Particularly when wide area networks extend beyond the traditional substation fence, cyber-security measures are essential. Substation/grid control recorder, hot standby redundancy etc. DS Agile OI Real-time, user-friendly Operator Interface Security procedures, controls, firewalls and role-based access are Devices Applications (OI) for complete substation automation room communications DS Agile A300 Powerful and ruggedised gateway solution all examples of such measures. A number of standards apply in this area, typically: NERC CIP, IEEE 1686, IEC 62351, ISO/IEC 27002, The digital substation benefits from a wide-area network Gateway that offers multiple communication ETSI and CEN CENELEC. protocols (including full IEC 61850 interface, receiving and responding to the data from its compliance) with hot-standby redundancy extensive array of sensors and IEDs. It can be integrated as part and simple commissioning of the grid operator’s wide area control systems and defence DS Agile A400 Substation inter-voltage (SACU) and plans, as the data from Phasor Measurement Units (PMUs) SACU & WACU inter-substation (WACU) level exchange is concentrated and relayed from the substation to the control through IEC 61131 automation centre and analysed by online stability solutions to track current IEC 61850-compliant C264 bay controller DS Agile switches oscillations and anticipate incidents. hot-standby redundancy 16 17 Control and Monitor On line condition monitoring and asset Device Principal applications PTWatch MS3000 Power transformer condition monitoring: Services and technical Digital retrofitting and training for agile digital expert system for data management management throughout the life span of the power transformer, with scalable range of sensors extension of substations substations On line condition monitoring functions are essential for power and modules for on line continuous monitoring of all major components of the transformers, circuit-breakers, disconnectors and gas-insulated transformer (active parts, bushings, tap- switchgear. changer and cooling system) Alstom Grid’s engineering teams can Alstom Grid is committed to bringing you the support you need throughout the lifespan interface with any system, whatever BWatch GIS bay condition monitoring: interactive Physical parameters are continuously monitored and real- diagnostics, acquisition of pressure and of your substation. Armed with the accurate information received from our installed its age or generation. We provide time measurements are combined and compared to models in temperature, threshold management, monitoring modules and supported by 100 years of manufacturing experience, we can stage-by-stage extensions, whilst order to generate specific recommendations for operations and leakage, density and liquefaction calculation, provide a full assessment to evaluate your equipment in real time. This assessment keeping the remaining circuits safely maintenance, as well as alarms when necessary. internal arc location, enclosure overheating allows us to define the scope of maintenance operations and plan actions for future in service. detection execution (planning, operations, repairs, network improvement, extension, replacement) Expert software providing additional advance warnings, automatic PDWatch Partial discharge condition monitoring for GIS to ensure the reliability of your electrical system. To maximise your asset performance Alstom Grid has developed simple diagnostics and maintenance suggestions will boost the efficiency GISWatch Integrated bay & partial discharge condition and investment, Alstom Grid offers long-term operations and maintenance agreements, tools that enable operators to manage of asset management. An interface with an asset management monitoring for GIS including 24/7 service centre assistance. their substations easily and safely system yields additional features such as remaining lifetime or CBWatch Circuit-breaker condition monitoring: moving while identifying problems quickly. dynamic rating capabilities. part timings and travelling curves, main Alstom Grid provides technical training on digital substations to develop the in-house We provide a fully documented contact wear, drive energy and auxiliary parts technical knowledge and skills required to operate and maintain a digital substation at solution with clear instructions are continuously monitored This architecture gives operational and maintenance teams an peak performance. By gaining hands-on experience and enhancing their technical skills on interconnecting, testing and overview of the condition of all substations in real-time, so they DWatch Disconnector condition monitoring in one of our Technical Institute centres, your teams can improve their performance and commissioning. Moreover, extension can make appropriate strategic asset management decisions. efficiency in their daily work. and retrofit solutions in the future will not require the original manufacturer All around the world, the Technical Institute offers a full range of comprehensive training to be involved, as everything is in: electrical safety, operations & maintenance, protection & control and network designed for interoperability. management solutions. Alstom’s agile digital substation offers unprecedented performance using intelligent primary systems and tailored automation solutions. 18 19  Grid-Products-L1-Digital_Substation-72399-2012_06-EN © ALSTOM 2012. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited. Alstom contributes to the protection of the environment. This brochure is printed on environmentally-friendly paper. www.alstom.com Tel: +44 (0) 1785 250 070 www.alstom.com/grid/contactcentre ALSTOM Grid Worldwide Contact Centre