Draft:Energy Hub
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Last edited by Johnbriton (talk | contribs) 17 hours ago. (Update) |
The Energy Hub is a analytical framework designed to find the optimal configuration and operation pattern of a Multi-energy system. An energy hub typically consists of four types of components: energy input, energy output, conversion technology and storage technology[1]. Moreover, energy hubs can be connected via real or hypothetical energy pipeline (for example, electricity wires, hot water pipes or even transportation with cars) and form an energy hub network.
History
[edit]The energy hub was initially developed as a method in "a vision of future energy networks (VOFEN)" project in High Voltage Laboratory in ETH Zurich, as an interface between different energy infrastructure and demands. Originally, the following equation was presented to represent the energy balance constraint in the energy hub: Where:
- and are column vectors representing demand and supply energy flows.
- is a column vector that records energy flow from and to the storage technologies.
- is the conversion coupling matrix, representing efficiencies of conversion technologies.
- is the storage coupling matrix, representing the efficiency of storage technologies.
![{\textstyle E_{[n\times 1]}^{dem}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/890d409d9f728350c66fe329abd6cd9a4eff53e2)
![{\displaystyle E_{[m\times 1]}^{sup}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/867d8f5139f7a64eb7e895962db7788d12e1343b)
![{\displaystyle Q_{[(m+n)\times 1]}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/20fc91f2dc178c115ab95b02f1e1348a746a2af4)
![{\displaystyle C_{[n\times m]}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/8335e1e56d06a02c53236b78d1489f4c482399c3)
![{\displaystyle S_{[n\times (m+n)]}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/dffb87b62d728a1ca4d9048c29e2b703d2160b4e)
This framework was later expanded by Schulze et al.[2] and Ahčin and Šikić[3], to include local energy production and demand response, respectively. The expanded energy hub formulation can be written as the equation below:Where:
- are the energy flows that are sold back to the supplier;
- are energy flows that are generated on-site;
- is the additional energy flows that are either requested or avoided by the demand response;
- is the demand-response coupling matrix, representing the dynamics of the demand (in case of buildings, this matrix could represent the thermal mass of the building structure).
![{\displaystyle E_{[n\times 1]}^{exp}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/dda39534125380eaf420a7dddedbea3a8b0f8dce)
![{\displaystyle E_{[m\times 1]}^{re}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/8b415ee3a914f4f21b92ea3659679033048b1b2e)
![{\displaystyle H_{[k\times 1]}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/275f7978afd17cfbf39f95e3b4c4ed7cc5a82672)
![{\displaystyle D_{[n\times k]}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/a3581fac084a4d791b20004396e392cda574eba8)
References
[edit]- ^ Geidl, Martin; Andersson, Goran (June 2005). "A modeling and optimization approach for multiple energy carrier power flow". 2005 IEEE Russia Power Tech. IEEE: 1–7. doi:10.1109/ptc.2005.4524640.
- ^ Schulze, M.; Friedrich, L.; Gautschi, M. (November 2008). "Modeling and optimization of renewables: applying the Energy Hub approach". 2008 IEEE International Conference on Sustainable Energy Technologies. IEEE. doi:10.1109/icset.2008.4746977.
- ^ Ahcin, Peter; Sikic, Mario (October 2010). "Simulating demand response and energy storage in energy distribution systems". 2010 International Conference on Power System Technology. IEEE: 1–7. doi:10.1109/powercon.2010.5666564.