PART II. Keynote Speeches. Professor Manu Hadad. Biography

Transcription

1 5 PART II Keynote Speeches Professor Manu Hadad Biography Prof Manu Haddad obtained the degree of Ingénieur d Etat in Electrical Engineering in 1985 and then a PhD in High Voltage Engineering in Following graduation, he took up a Research Associate position, to carry out investigations on the characterisation of ZnO surge arresters including their very fast transient response. In 1995, he was appointed as a Lecturer and then Senior Lecturer in electrical engineering at Cardiff University, with responsibility for the High Voltage Research Group and lecturing duties in high voltage engineering, power systems, electromagnetics, mathematics and electrical circuits. His research interests are in overvoltage protection, insulation systems, insulation coordination and earthing of electrical energy systems. Prof Haddad has completed several research and consultancy projects in overvoltage protection of electrical networks, polymeric insulation and earthing systems, with funding from industry and EPSRC. He has co-authored over 80 publications, with two paper awards. He has recently published an IEE- Power Series Book on Advances in High Voltage Engineering. He is a member of the IEE and CIGRE. Prof Haddad is an active Committee member of the IEE South Wales Power Specialist, the British Standard Institution committees on overvoltage protection of low and high voltage systems BSI PEL1 and PEL2, the International Electrotechnical committees IEC TC37 MT4 and MT10, and a member of the Steering Committee of the International Universities Power Engineering Conference (IUPEC). He is also a founding member of the UK Universities High Voltage network (UHVnet) organising its first colloquium at Cardiff University in Jan 2005.

2 6 Abstract High voltage research at Cardiff University: Improving insulation performance A. Manu Haddad, School of Engineering, Cardiff University UK Silicone rubber insulators offer significant advantages which include; lightweight, anti-vandal, improved mechanical strength, lower installation cost, and more importantly, superior electrical performance under moderate to heavily polluted environments. Polymeric insulators, made up of composite materials such as silicone rubber and EPDM have the advantage of hydrophobic properties. In addition, the hydrophobicity can be restored and transferred to an overlying pollution layer on the insulator surface. However, under both normal operating system voltage and transient overvoltage conditions due to lightning and switching surges, severe electrical stress can be imposed on such insulators. The high field regions, particularly near the HV conductor and the earth terminal, initiate corona and surface electrical discharges that can lead to premature degradation. Furthermore, under polluted conditions, dry band formation combined with unfavorable field distribution can lead to surface discharges and eventually complete flashover of the insulator. In this presentation, we consider techniques used in the field for field and flashover control, and focus on two approaches that help mitigate the risk of flashover due to pollution and high field stress. These are (a) Textured insulator surfaces: The control of surface field and dry bands on insulators is proposed using a novel approach of silicone rubber surfaces with a hemispherical textured finish (Fig.1a and Fig.1b). The geometry of the texture allows increase of leakage length and surface area which, in turn, reduces the leakage current density in the vulnerable shank region. In addition, the textured regions allow multipath current flow to be established making any surface discharges highly mobile and instable, thus, preventing their anchoring at any particular point on the surface (Fig. 1c). In turn, this helps reduce insulator degradation due to thesee discharges. Laboratory test have shown that the flashover voltage under pollution conditions can be increased by up to 27% compared to non-textured insulators. (b) Microvaristor graded material: Due to the geometry of insulator installations in service, highly non-uniform field distributions are established along polymeric insulators. The field magnitude near the HV and ground terminals can exceed the ionization threshold which could initiate corona, surface discharges and hence insulator flashover. Field control is highly desirable to alleviate the effect of such discharges on polymeric outdoor insulators. In this work, we investigate the effect of introducing ZnO microvaristor materials as a means of controlling electric stress on polymeric outdoor insulators. In the proposed design, a short length of ZnO microvaristor compound layer is applied on the core of the insulator near the insulator HV and ground terminals (Fig 2). This is then encapsulated within the silicone rubber housing, which protects the insulator against various environmental effects. Lightning impulse tests on prototype insulators fabricated in-house have shown a 21% increase in flashover compared to non-graded insulators.

3 7 a)textured insulator geometry b)fabricated textured flat sample c)infrared capture of discharge sequence Figure 1: Textured insulator proposal Fig. 2 Electric field grading using ZnO microvaristor

4 8 Keynote Speeches Ir. Dr Amir Basha Biography Ir. Dr Amir Basha Ismail served LLN/TNB for 33 years ( ). He was one of those several local pioneer engineers who were involved in the planning, design and operation of the 500kV/275kV/132kV National Power System Grid ( ), holding positions of senior engineer and chief engineer in the Development Planning and System Operation divisions of TNB. In 1994, when TNB was instructed by the Government to set up its own university, Dr. Amir was one of those several engineers from TNB who were entrusted to the university project and was made the Founding Dean of College of Engineering,Universiti Tenaga Nasional (UNITEN). When TNB Research Sdn. Bhd. (another subsidiary of TNB and located next to UNITEN),) and its associated laboratories were being set up at about the same time as UNITEN, Ir. Dr. Amir was then assigned to TNB Research as its General Manager and later became its Managing Director from He was then assigned again to UNITEN as the Dean of College Graduate Studies/Professor of Power Engineering Centre until his retirement from TNB in From 2008, he joined Minconsult Sdn. Bhd. as the Senior Consultant/General Manager leading/assisting teams that were involved in power system projects, such as power generating plants, electric traction railway projects (LRT/MRT and KTMB), renewal energy projects (large-scale FiT Solar PV projects, mini- of Feasibility hydros), Management & Engineering Audits of electricity supply industry and formulation Study Reports/Master Plan Study Reports related to Energy/Electricity Planning. In 2013, he was appointed by University Malaysia Perlis (UniMAP) as the Visiting Professor at the School of Electrical Engineering Systems.

5 9 Abstract The Keynote Talk entitled as above will focus on Malaysia s four strategic challenges that need to be addressed by energy policy planners. In formulating the Nation s energy security agenda towards ensuring reliable, clean and sustainable electricity supply requirement (for Peninsular Malaysia) post planning horizon (up to 2050). The Four Strategic challenges that will be deliberated in this Keynote Talk are: Challenge No. 1 Growing Electricity Demand-Generation Supply Requirement. This will include the projected electricity demand forecast and the necessary WASP generation expansion plan study to secure the reliability level ( operating reserve margin/ Loss of Load Probability of 1day per year)) to meet peak power capacity demand (MW) and energy demand (GWh) for each year of the planning horizon years Challenge No. 2 : Fuel Security viz-a-viz Existing National Energy Policies This will deliberate on (a) resource accessibility of indigenous gas supply (b) Pricing Policy/Acceptance of Price Risk, Resource Accessibility and Pricing Risk of Coal Gas Challenge No.3: Carbon Emission and Climate Change This will be discussed in relation to Challenge No. 1 in terms of fuel-type power plants that will be optimized/selected by the WASP Generation Expansion Plan Study with different scenarios of fueltype power plant candidates. Challenge No.4 The Nuclear Option This will be discussed in the context of the Government Economic Transformation Program (ETP) A Road Map for Malaysia Powering the Malaysian Economy with Oil, Gas and Energy. In this, the Government has taken a national stand with respect to Nuclear Energy option in diversifying the fuel mix for electricity generation, besides coal and gas. This will also be elaborated in relation to WASP Generation Expansion Plan Scenario Study and the Levellized Cost of Electricity (LCOE) comparing Coal, Gas and Nuclear fuel option.: Finally, the Talk will conclude with the proposed way forward in addressing the national energy security agenda for electricity demand-generation balance in terms of fuel policy mix and diversification