Modeling Uncertainties in Aggregated Thermostatically Controlled Loads Using a State Queueing Model
Abstract — To study the impacts of price responsive demand on the electric power system, requires better load models. This paper discusses the modeling of uncertainties in aggregated thermostatically controlled loads using a state queueing (SQ) model. The cycling times of thermostatically controlled appliances (TCAs) vary with the TCA types and sizes, as well as the ambient temperatures. The random consumption of consumers, which besides phase shifting, shortens or prolongs a specific TCA cycling period, introduces another degree of uncertainty. By modifying the state transition matrix, these random factors can be taken into account in a discrete SQ model. The impacts of considering load diversity in the SQ model on simulating TCA setpoint response are also studied.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 15016734
- Report Number(s):
- PNNL-SA-41229; ITPSEG; TRN: US200515%%1109
- Journal Information:
- IEEE Transactions on Power Systems, 20(2):725-733, Vol. 20, Issue 2; ISSN 0885-8950
- Country of Publication:
- United States
- Language:
- English
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