Negnevitsky, M and Hamilton, J and Lyden, S and Wang, X, Achieving high renewable energy penetration in off-grid systems via low load diesel integration: a case study of King Island, Australia, Proceedings of CIGRE 2018, 2018, Paris, France, pp. 1-12. (2018) [Refereed Conference Paper]
Copyright 2018 CIGRE
Official URL: https://e-cigre.org/search_results.asp?page=1&nb_l...
Ideally diesel engines should be run above 40% of their maximum rated capacity. At low loads diesel generators can experience a number of operational issues, owing primarily to low cylinder temperature and pressure. At low temperatures poor combustion chemistry combines with poor piston ring sealing, historically resulting in glazing, soot formation and un-burnt fuel residue seepage. Operational performance can quickly deteriorate as issues compound to further degrade cylinder pressure and temperatures, with irreparable engine damage possible. Short periods of low load operation are permissible given the engine is brought up and held at high load for sufficient duration to purge accumulated carbon residue. Recent advances in diesel generator technology are however redefining low load thresholds with opportunity for hybrid power systems to increased system flexibility via modified diesel load limits. The University of Tasmania’s has explored both low load diesel, and variable speed diesel applications, having developed hybrid power system models to quantify the advantages of each practice. A low load diesel pilot is also currently underway within the King Island power system. This paper explores both simulated system performance, and the practicality of MW scale low load diesel application. A case study of the King Island power system is offered in defining the commercial and environmental benefits of low load diesel integration. In addition the interplay evident across low load diesel and other enabling technologies, such as energy storage, is discussed.
|Item Type:||Refereed Conference Paper|
|Keywords:||low load diesel, variable speed diesel, hybrid power system, micro-grid, solar, wind power generation|
|Research Group:||Electrical engineering|
|Research Field:||Electrical energy generation (incl. renewables, excl. photovoltaics)|
|Objective Group:||Renewable energy|
|Objective Field:||Renewable energy not elsewhere classified|
|UTAS Author:||Negnevitsky, M (Professor Michael Negnevitsky)|
|UTAS Author:||Hamilton, J (Mr James Hamilton)|
|UTAS Author:||Lyden, S (Dr Sarah Lyden)|
|UTAS Author:||Wang, X (Professor Xiaolin Wang)|
|Downloads:||4 View Download Statistics|
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