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Optimal Management of Power System Network for Economic and Technical Efficiency

This road map explores the implementation of optimal management strategies for the power system network, considering the economic and technical aspects. It highlights the need for accurate and timely information, automation, reliability, and real-time monitoring to improve efficiency and competitiveness in the power industry. Key requirements include communication networks, smart meters, and seamless integration of information technology.

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Optimal Management of Power System Network for Economic and Technical Efficiency

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  1. Road Map for AMR N.Murugesan TCE Consulting Engineers Ltd Bangalore nmurugesan@tce.co.in nmurugesan@yahoo.com ( alternate)

  2. The Power system industry is in competition to have optimal management of the power system network in all system levels. Two aspects that influence the objectives are 1. Economical 2. Technical.

  3. Economical 1. P.S Information enable the utility to be more successful and competitive in a free market . 2. It becomes a strategic requirement when fast decisions are required. 3. Now it can’t be obtained from existing conventional Power system, the utility cannot be responsive. 4. Changes in the Power system market (details follow). 5. To support the energy market decision process existing control centres, substations and distribution system may have to be upgraded to provide the necessary information in a timely manner. 6. Cost reduction in operation ( Personnel reduction, crew management etc ) 7. Faster fault location & clearance (minimal supply interruption time & is directly related to cost ) ( FLISR). 8.Cost reduction in maintenance ( Trouble shooting, inventory control, Testing etc). 9. Deregulated electricity market cause quick changes in the operational conditions. 10. Economic pressure forces to maximize the utilisation of HV eqmt.

  4. Technical • 1. Accurate, timely and trusted information must be provided to the • utilities and traders. • 2. Data to the master control stations from automated substations is • needed continuously. • 3. Documentation (changes and upgrades to the network). • 4. Sequential switching and expert systems. • Reliability: The ability to diagnose in real time problems • shortens the time required for diagnosis and increases the • reliability of the equipment. This resulted in a faster restoration of • the substations. • 6. On line information for optimal utilisation of transmission • capacity, Wide Area Protection ( WAP) , Power transmission • Security etc. • 7. Wide area disturbances forced power companies to design system • protection schemes to counter Voltage instability, angular • instability, frequency instability etc. • 8. Lack in awareness of the real time power system status caused • the recent blackout in many countries. • 9. Improve the real-time wide area information that is available to • operators to operate with less reserve.

  5. New structure in Deregulated Environment Genco Genco Genco Gen Open access in Transmission RO ISO Traders Transmission SO Discom Discom Discom Traders Open access in Distribution Distribution Customer Customer Customer

  6. Works of Standard organisations & Research Institutions • CEIDS – the Consortium for an Electric Infrastructure in a Digital Society, the predecessor to EPRI’s IntelliGrid Consortium). • 2. EPRI’s – InteleGrid , Gridwise • 3. CERTS ( Consortium of Electric Reliability Technology Solutions) • 4. Galvin Electric Initiatives • 5. PSERC • 6. CIGRE, IEEE • 7. IEC TC 13, TC 57 • ( Development of IEC 61850 started with a workshop by EPRI in 1984)

  7. The IntelliGrid Vision The power delivery system of the future • Fully coordinated to operate automatically, efficiently, and reliably. • Meets emergency conditions with self-healing actions • Responsive to energy market and utility business needs • Communicates intelligently to customers, operators, and decision-makers • Takes advantage of central and distributed power supply and demand resources

  8. Merger of Two infrastructure ( Power & Information) Source: EPRI

  9. Multivendor products and operationIndustry-Level Architecture Enables SecurityPolicy Administration

  10. High value with integrated system Real time contingencies Energy Markets Outage Mgmt Security Network Management Data Management Protection SCADA AMR Seamless integration

  11. The Key Requirements for Future Investment Source: EPRI

  12. Source: IEC TC 57

  13. Possible trend in the far future CIGRE Road map

  14. Requirements on Meters Next Generation of Smart Meters • Provides Two way communication • Follow international open communication protocol ( IEC 62056) • Provides a means to communicate consumption to other devices • To be truly smart the meter requires a regular exchange of information • A smart metering system is an infusion of information technology and metering delivering • Can provide new added value services

  15. AMR – Communication Networks • 1. Mobile Radio Systems • 2. Fixed Networks • 3. Cellular and RF • 4. Public or private network, • or a mixture of both. • 5. PLC communications • Note: Among those above wireless and • PLCC are major candidate for • communication. Hence need more • attentions.

  16. Communication options a) GSM to communicate data from Smart Meters • GSM - Global System for Mobile Communications or cell phone technology • GSM is a key technology to allow remote access to meters • Does not require new infrastructure - ubiquitous and available • Solutions can be built on proven communication technology • Communication can be by GSM data call, GPRS or SMS depending on the application • SMS is an ideal technology for reading meters

  17. Communication options • Power Line Carrier (PLC) • Utilizes the power lines of the local electric • utility to retrieve the data from the endpoint to • the substation, and then utilizes various • communication technologies to convey the data • to the central data collection point • c) Hybrid Systems • Utility has many choices to read meters i.e Mobile radio frequency (handheld, vehicle-based) or fixed network frequency or a combination of technologies using PLC . • Future AMRs predicted to follow this trend

  18. Market & Implementation Options • Define strategies • Standardize interfaces – No proprietory • Plan in advance for new applications and legacy systems • Exchange of meters – stranded assets • Modification/upgrade of installed meters – removal from network

  19. The Key Requirements for Future Investment Interoperability – The ability to “plug and play” devices and software Open Architecture – Savings of both capital and life cycle cost. – Non-proprietary infrastructure means no vendor lock-in – Easy to develop uniform systems across enterprises. – Because vendors compete, innovations will result – Easy to maintain than disparate proprietary system Based on Industry-Accepted Standards – Encourages confident infrastructure investment – Reduces risk of obsolescence –Smooth migration ensured

  20. Questions? Did I skip over the interesting part of my presentation?

  21. Thanks for the opportunity nmurugesan@tce.co.in nmurugesan@yahoo.com ( alternate)

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