Zeng, Qing

PROJECT TITLE: Harmonized Integration of Gas, District Heating and Electric Systems (HIGHE)

PhD period: 2014.10.15 – 2017.10.14.
Section: Electric Power Systems
Research Programme: Wind Power Systems
Supervisor: Zhe Chen
Co-Supervisor: Jiakun Fang
Contact information

Collaborators: The Faculty of Engineering and Science, AAU; Department of Development and Planning, AAU; Department of Energy Technology, AAU; Department of Industrial Economics and Technology Management, AAU; Norwegian University of Science and Technology; Ramboll Denmark A/S.
Funding: ForskEL.

ABSTRACT

The styles of power generation and utilization are changing. Firstly, large scale application of renewable energy based generation units brings clean environment benefit to consumers while the associated fluctuating power challenges the system security. The lack of good storage options has plagued utility operators for generations obligated to provide a steady supply of electricity to meet constantly varying demand. Secondly, Power-to-gas (P2G) technology represents a megawatt-level energy storage solution to the problem of surplus energy from the renewables. The P2G technology converts electrical power to fuel and then hold reserve in the natural gas networks. Together with the mature application of gas fired combined heat and power (CHP) plants, the emerging P2G technology makes it possible to closely integrate the two previously independent main energy carriers, the power grid and the gas network, with bi-directional energy flow. Thirdly, the district heating/cooling systems can play the role as the manageable load. Such integration of gas, heating/cooling and electricity presents good potential to deal with renewable power fluctuation, to maximize the utilization of renewable energy, to reliably supply electric, heating/cooling and gas load.

Although P2G station has already been demonstrated, the integration of the power grid and the gas network with main power conversion units, CHP and P2G, to form an integrated energy system for supplying all energy consumptions, including electricity, heating/cooling and gas, has so many unknowns. The proposed project intends to provide solutions to some of the key problems for the harmonized integration of gas, heat and electric systems. The coordinated energy systems will provide opportunities for more efficient utilization of energy in residential, commercial and industrial applications. Eventually, the integrated energy grids will pave the way towards an efficient, reliable, clean and sustainable energy distribution for the society. 

PAPERS

Publications in journals and conference papers may be found at VBN