Key Experience: Power transformer design, testing and commissioning. Design of high and medium voltage substations. Broad knowledge on the high and medium voltage switchgear and transformers. Technical valuation of distribution and transmission systems.

Years of experience: 21

Languages: English, German, Serbian

Contact details: Tel: +27 12 993 4458;
Fax: +27 12 993 4128;
Mobile: +27 82 770 8262;
amilin@matrex-e.com

Career
Sept 1999 - current: MATREX Managing Director
Sept 1994 - Aug 1999: Siemens, RSA
Nov 1996 - Sept 1999: Engineering Manager: HV/MV department
April 1996 - Oct 1996: Senior Design Engineer: Power Transmission and Distribution
Sept 1994 - Mar 1996: Transformer Design Engineer
Feb 1993 - Aug 1994: SABS Transformer Engineer
Dec 1987 - Dec 1992: MINEL - Transformers, Belgrade
Dec 1988 - Dec 1992: Manager High Voltage Laboratory
Dec 1987 - Nov 1988: Special Measurements Assistant

Expertise:
HV outdoor & indoor (GIS) substations design, voltage level 11 - 500 kV,
Extensive expertise and experience in all aspects of substation design:
• Substations selection and specification.
• Development of project and installation scope of work for primary design.
• Detailed design for substations components and systems (single-line diagrams, primary substation layout, structure and tension plan, equipment and material schedules, earthing & lighting protection design).
• Calculation of short circuit forces. Loading data for foundations and various steel structures. Sag calculations. Fault level calculation.

Earthing and lightning protection design
• Design of earthing systems in accordance IEEE 80 standard and lightning protection in accordance with IEC 62305 standards.
• Evaluation of existing earthing and lightning systems, including site and equipment inspection and recommendations for improvement.

Preparation and evaluation of tender documents
Compilation of tender documentation and consequent supplier contract negotiations, based on internationally accepted conditions of contract.
• Development of purchase and technical specifications and material schedules (bill of quantities) for HV & MV switchgear equipment, power transformers, reactors and auxiliary transformers, auxiliary equipment and civil works.
• Preliminary equipment and site layout for tendering purposes.
• Technical evaluation of bidding documents.
• Design review and approval.
• Technical support during contract negotiations.

Power transformers
Extensive knowledge and expertise on all aspects of design, production, quality control, testing and commissioning of three and single phase power transformers for voltages 0.4 - 420 kV and power ratings of 2.5 - 725 MVA.
In-depth knowledge of Transformers Testing in accordance with IEC, DIN, NEMA, ANSI, BS and SABS standards.
Development of transformer maintenance programs and training courses by applying modern predictive maintenance methods
Forensic investigation and assessment of failed or damaged transformers
Recommend repair method and supervise refurbishment / repair of old or damaged transformers.

Asset evaluation
Evaluation of distribution systems, including equipment inspection, determining the present replacement value and residual life of the substation equipment.

Major projects

NAMIBIA – TAP, 132/11 kV AIS/HIS SUBSTATIONS - WLOTZKA, LICHEN & DOLERITE, 2008
Detailed design for substations components and systems (single-line diagrams, primary substation layout, structure and tension plan, equipment and material schedules, earthing & lighting protection design). Calculation of short circuit forces. Loading data for foundations and various steel structures. Sag & Fault level calculation.

NAMIBIA – TAP, 220 kV KHAN, 220/132/33 kV TREKKOPJE, 2008
Detailed design for substations components and systems (single-line diagrams, primary substation layout, structure and tension plan, equipment and material schedules, earthing & lighting protection design). Calculation of short circuit forces. Loading data for foundations and various steel structures. Sag & Fault level calculation.

CONGO – TAP, 220/15 kV Kalumines, 15 kV Kapenda refurbishment, 220 kV Kolvezi extension, 2008
Basic engineering and conceptual design. Preliminary equipment and site layout for tendering purposes.

NAMIBIA – TAP, 400/220 kV Gerus & 330/220 kV Zambesi Substations, 2008
Review primary design drawings, technical specifications and material schedules.

RSA – BHP Billiton, 2008
Consulting on technical specification, design drawings, quality control processes and test witnessing in the factory in China for 195 MVA 132/33 kV transformer. Investigating failed transformer.

CONGO – TAP, 220/66 kV New Luilu (DCP) SUBSTATION, 2007-2008
Basic engineering and conceptual design. Primary SS layout for tendering purposes.

RSA – GAUTRAIN Enzani, 2007
Technical consultant on electrical, mechanical and civil design

EGYPT - Elsewedy Cables, 2007
Review technical specification for new transformer factory

ARGENTINA – Tubos Trans Electric, 2007
Review new line transformer design

CONGO – TAP, 220/120 kV Neu Repartitur (NR) Substation, 2006-2007
Detailed design for substations components and systems (single-line diagrams, primary substation layout, structure and tension plan, equipment and material schedules, earthing & lighting protection design). Calculation of short circuit forces. Loading data for foundations and various steel structures. Sag & Fault level calculation.

CONGO – TAP, 220/15 kV Ruashi Substation, 2006-2007
Detailed design for substations components and systems (single-line diagrams, primary substation layout, structure and tension plan, equipment and material schedules, earthing & lighting protection design). Calculation of short circuit forces. Loading data for foundations and various steel structures. Sag & Fault level calculation.

CONGO – TAP, 220 kV Karavia Substation Extension, 2006
Basic engineering and conceptual design. Primary SS layout for tendering purposes.

CONGO – TAP, 120/33 kV AMCK Substation, 2006
Basic engineering and conceptual design. Primary SS layout for tendering purposes.

AUSTRALIA – TAP, 220 kV Bendigo Substation Project, 2005
Detailed project and installation scope of work for primary design. Detailed design for substations components and systems (single-line diagrams, primary substation layout, structure and tension plan, equipment and material schedules). Calculation of short circuit forces. Loading data for foundations and various steel structures. Sag & Fault level calculation. Evaluation of the existing earthing and lightning protection,

AUSTRALIA – TAP, 220 kV Mt. Beauty Substation Project, 2005
Redesign the existing bus coupler bay to accommodate a new transformer; Redesign the existing 4-single phase transformer bay to accommodate new 3-phase transformer; Design new bus coupler bay.

TOGO - TRANSFORMER INVESTIGATION IN LOME PORT SUBSTATION , 2005
Inspecting two 50 MVA failed transformers, providing fault analysis and assessment report with repair recommendation

MOZAMBIQUE - TRANSFORMER INVESTIGATION IN MAPUTO SUBSTATION , 2004-2005
Inspecting 500 MVA transformers with noise problems, consequent sound and vibration study and feasibility study on installing the anti-vibration pads to solve the problems with excessive noise

TOGO - TRANSFORMER INVESTIGATION & TESTING INSPECTION, 2004
Investigation on design problems and inspection during transformer testing for 35 MVA 161/21 (10.5) kV; 35 MVA 161/10.5 kV; 35 MVA 161/21 kV

RSA, COEGA - 132/11 kV GIS SUBSTATION PROJECT, 2003 - 2004
Primary plant layout; Earthing and lightning protection design; CT&VT matching; Specification for SA, TRF, AuxTRF & NER; Inspection during transformer testing

NIGERIA - COMPENSATION PROJECT, 2001 - 2004
Design of 132 kV and 33 kV capacitor banks with single and double busbar, tubular and stranded conductor; Calculation of short circuit forces; Loading data for gantries and steel structures; Earthing design; List of equipment

MOZAMBIQUE MOZAL II PROJECT, 2002 – 2003
Tender documents including
• Technical specification for 400 kV, 275 kV, 132 kV and 22 kV switchgear equipment
• Technical specification for 500 MVA 400/132/22 kV power transformer and auxiliary transformer
• Technical specification for auxiliary equipment
• Basic engineering and conceptual design. Substation layout.
• Compliance with international contractual law (FIDIC)
• Evaluation of submitted tender documents and final report to the client.
• Overview and approval of substation and equipment design - 400 kV; 275 kV and 132 kV.
• Inspection of manufacturing facilities and approval of acceptance tests for HV/MV switchgear & equipment.

ALSTOM POWER TRANSFORMERS TEST STATION, 2002 - 2004
Tender documents including:
• Technical specification for electrical works and equipment
• Technical specification for test procedures
• Single line diagrams and test station layout
• Evaluation of tender documents

NAMIBIA - KUISEB GIS SUBSTATION, 2001
Tender documents including substation layout and specification for 220 and 66 kV GIS equipment; power transformers, reactors and auxiliary transformers and auxiliary equipment.

NAMIBIA - SCORPION & OBIB SUBSTATION, 2000 - 2001
Tender documents including
• Specification for 400, 66 and 11 kV switchgear equipment
• Specification for power transformers, reactors and auxiliary transformers
• Specification for auxiliary equipment
• Substation layout Evaluation of submitted tender documents with recommendation to the client.

SWAZILAND - 400 kV INTEGRATION PROJECT, 1999 - 2000
Overview and approval of substation design - 400 kV; 132 kV; 66 kV and 11 kV, Power transformers rating 20 - 250 MVA. Inspection of manufacturing facilities and approval of acceptance tests for HV & MV switchgear.

REFURBISHMENT OF 66/11 kV TOLLGATE SUBSTATION - UITENHAGE MUNICIPALITY, 2000
Technical audit of existing 66 kV and 11 kV outdoor and indoor equipment including:

KEETMANSHOOP MUNICIPALITY, 2000
Asset evaluation of distribution systems, including equipment inspection; determining current replacement value and residual life of the substation equipment.

SIEMENS 1994 - 1999

MUZAFFARGARH - PAKISTAN 500 kV SUBSTATION
One-and-half-breaker configuration; Sag calculation; Calculation of short circuit forces in accordance with IEC865; Loading data for gantries and lightning rods; List of equipment

APOLLO ESKOM - 500 kV HYBRID-OPTICAL DC MEASURING SYSTEM FOR HVDC APPLICATIONS
Primary design: general arrangement, loading data for steel supports and foundation
Secondary cable layout
Project execution

DURBAN - SUNINGDALE 132 kV SUBSTATION
Single bus bar tubular aluminium conductor, Single line diagrams, Plan view and sections, Sag calculation, Calculation of short circuit forces in accordance with IEC865, Loading data for gantries and lightning rods, Loading data for steel structures, Foundation plan, Earthing mat calculation in accordance with IEEE80, Lightning protection plan, List of equipment

KLAARWATER - DURBAN 132 kV PROJECT
Engineering and design of different type of steel supports for Siemens type Circuit Breakers. Existing foundation has been used and the same has been checked for static and dynamic forces.

CAPE TOWN GIS/AIS 132 kV PROJECT
Complete engineering and design of 132 kV tubular single bus bar system. Bus bar system has been used for connection of existing transformers and newly installed 132 kV GIS system.

DUFERCO STEEL - SALDAHNA 11 kV SUBSTATION
Medium Voltage 11 kV indoor switchgear, Single line diagrams, Switchgear building layout, Load flow calculation, Fault calculation, Cable design: type, quantity, route, schedules, List of equipment

EAST QUANTARA - EGYPT 220 kV SUBSTATION
Double bus bar low-rise (classical) system with stranded copper conductors for 220 kV, Single line diagrams, Plan view and sections, Sag calculation, Calculation of short circuit forces in accordance with IEC865, Loading data for gantries and lightning rods, Loading data for steel structures, Foundation plan, Earthing mat calculation in accordance with IEEE80, Lightning protection plan, List of equipment

HCB CAHORA BASSA - MOZAMBIQUE 220 kV SUBSTATION
Extension of existing 220 kV substation, Plan view and sections, Calculation of short circuit forces, Loading data for steel structures, List of equipment

TAVANIR - IRAN 220/66 kV SUBSTATION
Double bus bar low-rise (classical) system with stranded aluminium conductors for 220 kV and 66 kV side. Required extended creepage distance. Single line diagrams, Plan view and sections, Sag calculation, Calculation of short circuit forces in accordance with IEC865, Loading data for gantries and lightning rods, Loading data for steel structures, Foundation plan, Earthing mat calculation in accordance with IEEE80, Lightning protection plan, List of equipment

MAJUBA POWER STATION - ESKOM
GEAFOL dry type transformers. Complete electrical and mechanical design. Power rating of transformers 400, 800, 1250, 1600, 2000 and 2500 kVA with voltage ratios 11/0.4 kV, 11/0.69 kV and 11/6.6 kV LV dry type transformers and chokes for battery chargers. Different power ratings from 27 kVA up to 400 kVA Al transformer types have been design for high altitude of 2200 m above sea level

ALUSAF RICHARDS BAY
GEAFOL dry type transformers. Complete electrical and mechanical design. Power rating 1250 kVA voltage ratio 11(6.6)/0.55 kV LV dry type transformers. Isolating transformers with power ratings 50 kVA up to 400 kVA and with voltage ratio 400 ±2x2.5%/400 V

MANNESMANN DEMAG
GEAFOL dry type transformers for Durban port cranes Complete electrical and mechanical design. Power rating 250 kVA and voltage ratio 6.6/0.55 kV All transformers have been design with special corrosion protection because of salty condition with very strong wind

SAPPI NGODWANA
GEAFOL dry type transformers for the paper plant. Complete electrical and mechanical design. Power rating 2000 kVA and 2500 kVA and voltage ratio 11/0.55 kV and 6.6/0.55 kV POWER

For courses, workshops and conferences held by Mr A Milin to date look under Training references.