Home Programmes Registration
Time
8:45am-8:55am
9am-11:40am
11:45am-12:15am
2pm-5pm
Venue
T.Y.Wong Hall LT
5/F, Ho Sin Hang Engineering Building
Room 603
6/F, Ho Sin Hang Engineering Building

  • Open Address
    by Dah-Ming Chiu (Information Engineering Department at The Chinese University of Hong Kong)
    8:45am-8:55am, T.Y.Wong Hall LT, 5/F, Ho Sin Hang Engineering Building

  • Invited Talks

    1. Smart Grid and Demand Management
      Speaker: Tang Fai Chow (China Light and Power Group Hong Kong (CLP))
      9am-9:50am, T.Y.Wong Hall LT, 5/F, Ho Sin Hang Engineering Building

      Abstract:The world economy nowadays faces challenges from energy price spikes, resource shortages and global environmental problems. Most of the power utilities around the world have adopted smart grid and demand management to address the challenges.
      Electricity systems around the world are currently sized to meet peak demands that only occur a few days in hot summers and/or cold winters. That leads to generating plant and power grid being under-utilised for much of the time. Various demand management programmes are being used to encourage energy users to reduce demands for electricity during peak periods and to shift consumption to times of low demand.
      A smart grid integrates information and telecommunication technologies with an electric power grid that dramatically improves supply reliability, seamlessly integrates intermittent renewable energy and, most importantly, enables energy users to participate in demand management programmes. As a result, customer can reduce their energy bills, the power utility can improve energy efficiency and reduce carbon emission.
      CLP Group is among the first electricity companies in the world to respond to the threat of global climate change by setting long-term targets for deep reductions in the carbon intensity of our entire portfolio.
      CLP Power, a principle subsidiary of CLP Group that operates a vertically integrated electric power business in Hong Kong, followed the energy vision and established CLP's smart grid definition and landscape. Currently, CLP is piloting various smart grid technologies in order to identify fit-for-purpose smart and green solutions.
      This presentation will first describe CLP energy vision and strategy on smart grid development, followed by smart grid enabled demand management programmes for residential and commercial customers, and finally the contribution to green environment thru' Electric Vehicles.

      About speaker: Mr. Chow is the Director of the Power Systems Business Group (PSBG) of CLP Power Hong Kong Limited (CLPP), who oversees the transmission and distribution network (T&D) of CLPP's supply area to deliver safe, stable and reliable electricity to over 2.2 million customers in Hong Kong.
      Leading a workforce of 2000, Mr. Chow steers the PSBG to attain world class performance in the areas of asset management, network planning and construction, systems operations and supply chain management. To put into practice CLPP's environmental commitment, Mr. Chow guides PSBG to bring in innovative ideas and technologies, so as to build a greener and smarter grid. Being a "green" advocate, Mr. Chow pioneered to construct green power substations as early as in year 2000.
      Before assuming his current position in February 2010, Mr. Chow had been CLPP's Director of the Marketing and Customer Services Business Group (MACS) for five years, where he achieved high customer satisfaction through excellent customer services and a wide range of value-added products and services many of which were related to energy conservation. To support the Hong Kong SAR Government's green transportation goals, Mr. Chow played a key role in setting local standards and working with the business community for the development of an electric vehicle charging infrastructure in Hong Kong.
      Mr. Chow also serves as Director on the Boards of CLPP and CLP Engineering Limited.
      Mr. Chow first joined CLPP in 1980 and rejoined in 1992 after working in the State Electricity Commission of Victoria in Australia in the late 80's and early 90's.
      Mr. Chow holds a Bachelor degree in Electrical Engineering from the University of Hong Kong and a Master degree in Business Administration from the Chinese University of Hong Kong. He is a Chartered Engineer, MHKIE.

    2. Solar Electricity and China
      Speaker: Xudong Xiao (Physics Department at The Chinese University of Hong Kong and Shenzhen Institute of Advanced Technology, CAS)
      9:55am-10:45am, T.Y.Wong Hall LT, 5/F, Ho Sin Hang Engineering Building

      Abstract:Photovoltaic solar electricity is to lead a revolution in electrical power industry. This revolution will continue through the 21st century and affect the life style of humankind from now on. The successful implementation of solar electricity will not only solve our energy and environment crisis but also sustain a healthy economic and civilizational development.
      In this talk, I will review the photovoltaic electricity at both the technology and commercialization level. In particular, I will review the present challenges and opportunities faced by the photovoltaic technology and its large-scale application. The China elements, in research, in industrialization, and in application, will be discussed. In the end, I will briefly report our efforts and results in developing low cost but high efficiency Cu(InGa)Se2 solar cells.

      About speaker: Prof. Xiao received his Ph. D. degree in physics at the University of California at Berkeley in 1992. After his further training in Lawrence Berkeley National Laboratory as a post doctorate, he joined the Department of Physics at the Hong Kong University of Science and Technology in 1994, where he directed his research in surface science and nano science with both optical techniques and scanning probe microscopies. In 2007, Prof. Xiao moved to the Chinese University of Hong Kong and expanded his research to photovoltaic solar energy. He is a recipient of the Outstanding Yong Scientist Fund, Chinese National Science Foundation, 2004 and an awardee of "Thousand Talents Scheme", China, 2010. Prof. Xiao has made various contribution to surface science and nano science, including inventing linear optical diffraction method for detecting submonolayer surface diffusion, discovery of room temperature "ice-like" water structure, developing quantitative tribology at nanoscales, experimentally demonstrating quantum capacitance of nano-junctions, and discovery of pseudogap state in the nano-island of conventional superconductors. Concurrently, Prof. Xiao is leading a team to develop equipments and production lines to manufacturing Cu(InGa)Se2 thin film solar cell in China.

    3. Branch Flow Model: Relaxations, Convexification, Computation
      Speaker: Steven Low (Electrical Engineering Department at the California Institute of Technology)
      10:50am-11:40am, T.Y.Wong Hall LT, 5/F, Ho Sin Hang Engineering Building

      Abstract: We propose a branch flow model for the analysis and optimization of mesh as well as radial networks. The model leads to a new approach to solving optimal power flow (OPF) problems that consists of two relaxation steps. The first step eliminates the voltage and current angles and the second step approximates the resulting problem by a conic program that can be solved efficiently. For radial networks, we prove that both relaxation steps are always exact, provided there are no upper bounds on loads. For mesh networks, the conic relaxation is always exact and we characterize when the angle relaxation may fail. We propose a simple method to convexify a mesh network using phase shifters so that both relaxation steps are always exact and OPF for the convexified network can always be solved efficiently for a globally optimal solution. We prove that convexification requires phase shifters only outside a spanning tree of the network graph and their placement depends only on network topology, not on power flows, generation, loads, or operating constraints. Since power networks are sparse, the number of required phase shifters may be relatively small. We present a simple scalable distributed solution that can be easily parallelized or implemented on a large power network. Finally, we relate this model to the popular bus injection model and semidefinite relaxation. (Joint work with Masoud Farivar, Na Li, Lingwen Gan, Subhonmesh Bose, Mani Chandy, Caltech)

      About speaker: Steven H. Low is a Professor of the Computing & Mathematical Sciences and Electrical Engineering Departments at Caltech, and an adjunct professor of both the Swinburne University, Australia and the Shanghai Jiao Tong University, China. He was a co-recipient of IEEE best paper awards, the R&D 100 Award, and an Okawa Foundation Research Grant. He was on the editorial boards of IEEE/ACM Transactions on Networking, IEEE Transactions on Automatic Control, ACM Computing Surveys, Computer Networks Journal, NOW Foundations and Trends in Networking. He is a Senior Editor of the IEEE JSAC. He is an IEEE Fellow, and received his B.S. from Cornell and PhD from Berkeley, both in EE.

  • Panel Discussion: Energy Science and Engineering: What, Why, and How

  • Poster Presentation: TBA
Date: 31 July 2012 (Tuesday)

Time: 8:45am - 5:00pm

Venue for Talk:
T.Y.Wong Hall LT
5/F, Ho Sin Hang Engineering Building Venue for Poster Presentation:
Room 603
6/F, Ho Sin Hang Engineering Building
Organizing Committee:

 

Energy Day in Archive:

  • Energy Day 2015
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  • Energy Day 2013
  • Inargual Energy Day 2012

     

    • Department of Information Engineering & Department of Mechanical and Automation Engineering,
    The Chinese University of Hong Kong.