Journal of Shanghai Jiao Tong University ›› 2024, Vol. 58 ›› Issue (12): 1892-1902.doi: 10.16183/j.cnki.jsjtu.2023.099

• New Type Power System and the Integrated Energy • Previous Articles     Next Articles

An AGC Frequency Control Reserve Capacity Evaluation Method for Air Conditioner Groups Based on Nonintrusive Load Disaggregation

NIE Shihao1, CHEN Lei1(), HAO Ling1, XU Fei1, MIN Yong1, DOU Zhenlan2, ZHANG Chunyan2, SUN Pei3   

  1. 1. Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
    2. State Grid Shanghai Municipal Electric Power Company, Shanghai 200223, China
    3. State Grid Shanghai Electric Power Research Institute, Shanghai 200437, China
  • Received:2023-03-20 Revised:2023-08-01 Accepted:2023-08-07 Online:2024-12-28 Published:2025-01-06

Abstract:

Massive air-conditioner resources on the consumer side have a huge potential to be involved in system frequency control, and massive scattered individual air-conditioners can be aggregated into air-conditioner groups to participate in system automatic generation control (AGC). As the operating status of individual air-conditioners is random, it is necessary to accurately evaluate the frequency control reserve capacity of air-conditioner groups. In this paper, a data-driven nonintrusive load disaggregation (NILD) method is proposed to incorporate massive air-conditioner groups into AGC frequency control reserve. First, the proposed method constructs a sequence-to-sequence model to nonintrusively forecast the frequency control reserve capacity of individual air-conditioners. Considering the fact that the participation of air-conditioners in AGC may affect the comfort of users, the feasibility of individual air-conditioners is evaluated to participate in AGC frequency control and a selection mechanism is constructed to determine whether they can be included in the frequency control reserve of air-conditioner groups. In the proposed method, individual air-conditioners within a sub-station that participate in AGC are aggregated to derive the air-conditioner group frequency control reserve of the sub-station, and the air-conditioner group frequency control reserve of all sub-stations are aggregated to derive the entire air-conditioner group frequency control reserve. The experiments simulate different degrees of system frequency drops in which air-conditioner groups work cooperatively with thermal units for AGC frequency control. The simulation results demonstrate the validity of the proposed method.

Key words: automatic generation control (AGC) frequency control, air conditioner groups, load forecasting, nonintrusive load disaggregation (NILD)

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