Page 1 of Introduction MR PQ in IsraelIII Israel/ Dec. 4 st 2014 Maschinenfabrik Reinhausen Germany Power Quality Power Quality and Reliability Dr.-Ing. Mike Ifland / MR PQ Germany

Page 2 of Introduction MR PQ in IsraelIII Agenda IMR – Introduction IMR PQ – Fields of activity IMaschinenfabrik Reinhausen – Power Quality Solutions IProject Example – Harmonic Filter System ISummary

Page 3 of Introduction MR PQ in IsraelIII 1. MR – Introduction 1.1 Our worldwide clients / Your market opportunities > 80 % of all our products ever delivered are still in operation today > 50 % of worldwide electricity consumption passes through a MR product Maschinenfabrik Reinhausen GmbH (parent company) IFounded in 1868, MR trademark since 1901 IMajority family ownership in fifth generation IWorld market leader in transformer switching I3.160 employees in MR and 26 affiliated companies (35 sites) I82 % of employees in Germany, 90 % export business IGroup turnover of 650 million EUR, highest available rating (banks)

Page 4 of Introduction MR PQ in IsraelIII 1. MR – Introduction 1.2 Fields of activity No transformers without a MR productMarketing of proprietary technologies Increasing corporate value in global niches of electrical power engineering while preserving our independence VALUE FACTURING Decision Support for Manufacturing Excellence TRANSFORMER CONTROL Control of Power Transformers POWER COMPOSITES Composite Materials and Insulators MESSKO INSTRUMENTS Equipment Control and Assessment POWER QUALITY Solutions at Grid Nodes HIGHVOLT TESTING Testing and Measurement Technologies Preferred system integrator Task lIntegration of Shop Floor Data Models into ERP lOptimization of Automated Manufacturing Processes lFilters and Reactive Power Compensation lPower Flow Control in Distribution Networks lShop Floor Testing Systems for Grid Components lMobile HV / MV Systems for On-Site Testing lMechanical & Electrical Endurance by GFRP lComposite Insulators for HV / MV Equipment lSensors, Accessories, Oil Analytic Laboratory and Secondary Brands lProcess Measuring and Control Technologies for Industry Applications Range Vision Goal Brand lActuators, Electronics and Data Management lTransformer Services Products

Page 5 of Introduction MR PQ in IsraelIII IChemical industry ICement industry IPulp & Paper IWindfarms IPower plants ISteel industry IUtilities IMining IOil & Gas IRailway 1. PQ – Fields of activity 1.1 Target industries / customers

Page 6 of Introduction MR PQ in IsraelIII 1. PQ – Fields of activity 1.2 Different clients facing different power quality problems IChemical industry ICement industry IPulp & Paper IWindfarms IPower plants ISteel industry IUtilities IMining IOil & Gas IRailway Unbalance Voltage/Current Voltage variationHarmonics Transients Reactive power Voltage drops Flicker ISwitching events IAthmospheric overvoltage ITransient currents/voltages IPhase shifting voltage/current ILeading (capacitive) ILagging (inductive) ICaused by powerful single phase loads ICaused by harmonic sources like converter drives, furnaces, millions of switched mode power supply units.… IEvaluation will distinguish harmonic voltage/current ICommutating effects IStart of huge motor drives ICaused by powerful welding machines, presses IOther fluctuating and repeating loads ICaused by long-term load fluctuations Turn key solutions provided by

Page 7 of Introduction MR PQ in IsraelIII 1. PQ – Fields of activity 1.3 Power Quality problems electrical equipment IChemical industry ICement industry IPulp & Paper IWindfarms IPower plants ISteel industry IUtilities IMining IOil & Gas IRailway Turn key solutions provided by Harmonic distortions – Effects on the network Malfunction of protection and control devices Additional losses: - life span reduction - destruction of equipment Malfunction of ripple control devices

Page 8 of Introduction MR PQ in IsraelIII 1. PQ – Fields of activity 1.4 The solution circle ICustomized solutions  Taking care of specific problems

Page 9 of Introduction MR PQ in IsraelIII 2. MR Power quality solutions 2.2 Metal encapsulated Indoor Equipment (Harmonic filters) Harmonics IHarmonic filter system for indoor application / POCOS 2 x 22 MW compressor drive with 12- pulse LCI converter 10 kV 5 steps with total power 9.8 Mvar HF05 (1.6 Mvar) / HF07 (1.0 Mvar) / HF 11 (3 x 2,4 Mvar)

Page 10 of Introduction MR PQ in IsraelIII 2. Power Quality Solutions 2.3 GRIDCON ® Modules and Stations (general overview)

Page 11 of Introduction MR PQ in IsraelIII BMW-Brilliance-Automotive Shenyang – China: ITuned passive filter, designed for max. 660 A (inductive / reactive power compensation) IOne active filter (500 A): similar effect, lower losses and smaller size 2. Power Quality Solutions 2.4 Low Voltage Developments

Page 12 of Introduction MR PQ in IsraelIII 2. Power Quality Solutions 2.5 AcF – Working principle GRIDCON AcF: service optimized, modular concept with 4 modules per cabinet Working principle of Active Filters:

Page 13 of Introduction MR PQ in IsraelIII +10 % +5 % 0 % -5 % -10 % Deviation from rated voltage (in %) Medium voltage grid Secondary substation Low voltage grid Maximum feed-in case Maximum load case Higher voltage due to more feed-in Regulation „downwards“ Regulation „upwards“ 20 kV 0.4 kV 20 kV Lower voltage due to e-mobility and heat pumps Outside of allowed voltage band 2. Power Quality Solutions 2.6 GRIDCON ® Transformer

Page 14 of Introduction MR PQ in IsraelIII LV gridSubstation Controller PV = 3~3~ = 3~3~ = 3~3~ G V Sensor abgesetzte Spannungsmessung Actuator MV grid Transformer 1 Voltage regulator 3 On-load tap-changer 2 2. Power Quality Solutions 2.7 GRIDCON ® Transformer - Setup

Page 15 of Introduction MR PQ in IsraelIII 3. Project example – harmonic filter system 3.1 Requested compensation system

Page 16 of Introduction MR PQ in IsraelIII 3. Project example – harmonic filter system 3.2 First calculation – with specified compensation systems 220 kV frequency sweep of substation „Mina Constancia“ 22.9 kV frequency sweep of substation „Mina Constancia“ parallel resonance effects in the range of 11th harmonic higher harmonic range strongly damped impact of generated harmonics of 18/24-pulse converter are negligible I11 th harmonic

Page 17 of Introduction MR PQ in IsraelIII 3. Project example – harmonic filter system 3.3 Harmonic predistortion 220 kV / specified compensation system IHistogramm 220 kV I5th  1.2% I7th  0.6% I11th  3.0% I13th  1.5% I11 th harmonic IHistogramm 22.9 kV IVoltage 22.9 kV I5th  0.13% I7th  0.52% I 11th  8.40% !! I13th  1.67%

Page 18 of Introduction MR PQ in IsraelIII 3. Project example – harmonic filter system 3.4 Design review of requested compensation system

Page 19 of Introduction MR PQ in IsraelIII 3. Project example – harmonic filter system 3.5 Calculation – with changed design of compensation/harmonic filter systems 220 kV frequency sweep of substation „Mina Constancia“ 22.9 kV frequency sweep of substation „Mina Constancia“ decrease of impedance in the range of 11th harmonic by factor 4 I11 th harmonic

Page 20 of Introduction MR PQ in IsraelIII 3. Project example – harmonic filter system 3.6 Calculation results– with changed design of compensation/harmonic filter systems Histogram voltage harmonics 22.9 kV I5th  0.12% I7th  0.61% I 11th  1.13% I13th  0.35% I17th  0.03% I19th  0.02% Voltage 22.9 kV Order harmonics (voltage) IEC class 2 Specified System Recommended System

Page 21 of Introduction MR PQ in IsraelIII 4. MR PQ - Summary Encapsulated Indoor Equipment GRIDCON ® POCOM, POCOS, POCOL custom biult compensation systems with a high degree of standardization Encapsulated Outdoor Equipment GRIDCON ® Module F,M,C,E Applicable as Fixed, Multiple, Concrete, E-House Dynamic Equipment customized applications for compensation and filtering of harmonics high flexibility in terms of configuration and arrangement IP00 (Indoor / Outdoor) Filters with high voltages ( 10 Mvar) for utilities and industrial applications Voltage Regulated Distribution Transformer (VRDT) preventing voltage band violations in both MV and LV networks transfer of proven HV technology into MV/LV grids

Page 22 of Introduction MR PQ in IsraelIII

Page 23 of Introduction MR PQ in IsraelIII Backup

Page 24 of Introduction MR PQ in IsraelIII 4. Project example – harmonic filter system 4.1 Electrical data I 220 kV Main feeder I 22.9 kV 60 Hz Busbar B I Capacitorbanks (2 x 23 Mvar) I Sk“min 1248 MVA I Liquid cooled resistor starters (Ball Mill /SAG Mill) (2 x 32MVA) I 24-pulse perfect harmonic converter drives (11 MVA) I 18-pulse perfect harmonic converter drives (1.5 MVA) I 22.9 kV 60 Hz Busbar A I Sk“min 648 MVA I Transformer 75/125 MVA

Page 25 of Introduction MR PQ in IsraelIII 2. MR Power quality solutions 2.3 Metal encapsulated Indoor Equipment (Inrush limiting resistors) MV network behavior during energization of large harmonic filters or converter- / distribution/transmission transformers Transients

Page 26 of Introduction MR PQ in IsraelIII 2. MR Power quality solutions 2.4 Metal encapsulated Indoor Equipment (Load symmetration units) Unbalance Voltage/Current C1 C2 L1 Customer equipment: Powerful single phase loads Solution: „Steinmetz-Scheme“ Capacitors/ Reactors with tappings IC1 & L1 for load symmetration IC2 for reactive power compensation

Page 27 of Introduction MR PQ in IsraelIII C1 C2 L1 2. MR Power quality solutions 2.4 Metal encapsulated Indoor Equipment (Load symmetration units) Unbalance Voltage/Current IC1 with tappings IL1 with tappings