Optimizing the renewable and fossil-fired generation capacities: Case study of interconnected district-level systems : научное издание

Описание

Тип публикации: статья из журнала

Год издания: 2022

Идентификатор DOI: 10.1016/j.egyr.2021.11.095

Ключевые слова: pump, demand, power, electricity, supply, network

Аннотация: We first comprehensively analyze determining the generating capacities of each type, then discuss the heat distribution across interconnected district-level heat energy systems (the hubs) containing both low-scale and centralized heat plants; discussion is presented from the standpoint of primary energy consumption and costs. The aПоказать полностьюpplied tool includes a flexible heat generation model and an accurate objective function. The set of constraints and the Jacobian matrix are configured manually. We apply the fixed-point iteration approach to solve an equation system. In order to evaluate the consequences of all possible scenarios, we analyze a novel district heating (DH) system with low-scale solar collectors and heat pumps against central combined heat-and-power (CHP) plant fueled with fossil fuels and biomass. The proposed system is evaluated from the standpoint of the state-of-the-art, future prospects, and environmental impact. For each specific type of capacities, we herein present maximum achievable net generation of heat. System layout sketch is based on the data on the actual districts of Canberra, Australia. All the hubs are studied as a whole with due account of heat redistribution. The configuration made implies construction renewable energy facilities with a heat generation of 6.5+ MW, which will suffice to cover about a fifth of the peak load. This approach is quite novel for Australia. With greater electricity and heat supplies, renewable resources can cover an even greater share of such supplies. To sum up, a significant difference between the costs of a natural gas-based DHS and a coal-fired DH one lies in the fixed costs of operating the CHPPs and in the fuel costs. The self-generation of a hub may be inconsistent with the total energy balance, which is the total of eigen-production, energy inflows and outflows. The total system performance is considerably better when coal-fired CHPPs account for the bulk of net production. (C) 2021 The Author(s). Published by Elsevier Ltd.

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Издание

Журнал: ENERGY REPORTS

Выпуск журнала: Vol. 8

Номера страниц: 137-144

ISSN журнала: 23524847

Место издания: AMSTERDAM

Издатель: ELSEVIER

Персоны

  • Chicherin Stanislav (Omsk State Transport Univ OSTU, 35 Marx Ave, Omsk 644046, Russia)
  • Zhuikov Andrey (Siberian Fed Univ, Svobodny Ave 79, Krasnoyarsk 660041, Russia)
  • Kolosov Mikhail (Siberian Fed Univ, Svobodny Ave 79, Krasnoyarsk 660041, Russia)
  • Junussova Lyazzat (Nonprofit JSC Almaty Univ Power Engn & Telecommun, Alma Ata, Kazakhstan)
  • Umbetov Erik (Nonprofit JSC Almaty Univ Power Engn & Telecommun, Alma Ata, Kazakhstan)