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

doi:10.16183/j.cnki.jsjtu.2023.099

Abstract

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)

CLC Number:

TM734

NIE Shihao, CHEN Lei, HAO Ling, XU Fei, MIN Yong, DOU Zhenlan, ZHANG Chunyan, SUN Pei. An AGC Frequency Control Reserve Capacity Evaluation Method for Air Conditioner Groups Based on Nonintrusive Load Disaggregation[J]. Journal of Shanghai Jiao Tong University, 2024, 58(12): 1892-1902.

Figures/Tables 11

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AGC功率指令/MW	响应用户数/个	过选率/%
1	1279	21.81
2	2426	17.60
3	3589	16.41
4	4737	15.58
5	5883	15.01
6	7028	14.63
7	8178	14.40
8	9452	15.36

方法	空调火电容量比	调整时间/s	响应系数
空调集群+火电机组	1∶1	35.286	-0.901
	1∶2	28.605	-0.617
	1∶3	24.765	-0.470
	1∶4	22.109	-0.379
	1∶5	20.098	-0.318
火电机组		52.234	-1.165

方法	空调火电容量比	调整时间/s	响应系数
空调集群+火电机组	1∶1		-2.807
	1∶2	34.878	-1.235
	1∶3	30.704	-0.939
	1∶4	27.907	-0.758
	1∶5	25.815	-0.635
火电机组			-11.287