ABB Power Technologies — 1

© ABB Power Technologies - 2 - The scope of ABB Power Technologies

Overview: Power Technologies Power Technology Products HV Products MV Products Transformers Grid Systems n High-voltage Substations Network Management n Turnkey n Main © ABB Power Technologies - 3 - and medium-voltage products, distribution and power transformers, product service Power Technology Systems n Main customers: Utilities, Industries, OEMs, Distributors and EPCs n 2004 revenues: $6. 0 bn n Employees: 26, 000 Power Generation substations, grid systems, network management systems, power plant control systems, service customers: Utilities and Industries n 2004 revenues: $3. 7 bn n Employees: 13, 000

What is Power Quality? n Power Quality (PQ) is the degree to which the delivery and utilization of electric power affects the performance of electrical equipment and loads n Why is power quality so important? n Different understanding n n © ABB Power Technologies - 4 - n Utility reports 1 outage in 5 years (utility definition) Customer sees outages on weekly basis U. S. survey of industrial customers: n 38% of industrial customers claim the utility is responsible for power quality n 12% are planning to buy power quality equipment n 50% have power quality equipment

Power Quality problems n Common power disturbances include: n n Voltage dips, sags and swells n Overvoltages n Interruptions, harmonics, unbalances and transients n n Voltage fluctuations and flicker Reactive power excess Can create problems such as: © ABB Power Technologies - 5 - n Loss of production and revenue n Process interruptions and damage to equipment n Higher energy costs n Loss of data

Distribution of voltage disturbances % of © ABB Power Technologies - 6 - Total events * Source: M. Goldstein and P. D. Speranza n Voltage sags provide the vast majority of all power quality problems

Power quality equipment for utilities and industries n Overall system reliability n n Interruptions n n © ABB Power Technologies - 7 - Surge arresters Voltage dips n n Static Var Compensation (SVC) and SVC Light Overvoltages n n High Speed Transfer System (HSTS) Voltage fluctuations, imbalances and flicker n n Distribution Management Systems / SCADA Dynamic voltage restorer (DVR), Integrated power factor control (PFC) Harmonics n Passive and active filter capacitors

High Speed Transfer System (HSTS) Switch from a faulty main feeder to an auxiliary feeder within 30 -120 ms --> uninterrupted supply for sensitive loads n Long experience in switchgear design and assembly n Optimized system and fast controller n No permanent losses n Breaking fault current n 20, 000 + transfer operations n © ABB Power Technologies - 8 - n Low investment

Comparison of transfer systems HSTS (High Speed Transfer System), SSTS (Solid State Transfer Switches) & MTS (Mechanical Transfer Switch). HSTS SSTS Transfer time > 100 ms up to seconds 30 ms < 1 Cycle No permanent losses High permanent losses limited applications breaking fault current breaking load current 20. 000+ transfer operations © ABB Power Technologies - 9 - MTS (classical) 20. 000+ transfer operations Unlimited transfer operations Non- optimized, conventional controller optimized system, fast controller Power electronics additional c. b. needed low investment very high investment

Static Var Compensator (SVC) technology n SVCs compensate reactive power in a dynamic way and minimize voltage variations ABB innovation: © ABB Power Technologies - 10 - n SVC Light: IGBT valve is controlled >10 times per half-period IGBT modules n Conventional SVC: Thyristor valve is controlled once per half-period

SVC applications n Electric Arc Furnaces: n Strongly fluctuating reactive power consumption n Nonlinear load on the grid n A large source of voltage flicker, harmonics, and voltage unbalance In 2005, ABB registered $30 million in orders for SVCs in steel mills 100 percent increase to 2004 period © ABB Power Technologies - 11 - n High speed trains n n Voltage unbalance due to large single phase traction load Grid connection of offshore wind farms n Output power fluctuates depending on wind speed ABB will present a paper on SVC application on Thursday, June 9 th at 11 a. m.

Surge arresters n A complete surge arresters portfolio from low voltage to high voltage © ABB Power Technologies - 12 - Low voltage up to 1 k. V LOVOS Medium voltage up to 44 k. V POLIM ABB will present a paper on surge arresters for railway applications on Wednesday, June 8 th (Plenary Session S 2) High voltage GIS up to 800 k. V AZ High voltage AIS 44 - 800 k. V EXLIM/ PEXLIM HVDC, High energyapplications EXLIM, MXE

Network Manager – release 2 is launched n ABB Network Manager/SCADA n n Real-time monitoring, control, and operations of T&D networks and generation plants ABB unveils release 2 at Cired Enhanced operational reliability n Enhanced cyber security n © ABB Power Technologies - 13 - n Updated distribution management system functionality n Real-time integration of distribution information

Conclusion At Cired 2005, ABB displays products, systems and services which enable power quality for our utility and industry customers n © ABB Power Technologies - 14 - n ABB offers a complete range of products and solutions for every application, from high voltage network down to low voltage load

A global leader in power and automation technologies that enable utility and industry customers to improve their performance while lowering environmental impact

ABB Power Technologies — 1 — Guido