Regional Power Grid Automatic Generation Control Strategy Considering Energy Storage Participation

doi:10.12096/j.2096-4528.pgt.260209

Abstract

Abstract:

Objectives To address the coordination issue of frequency regulation resources such as energy storage, coal-fired units, and gas-fired units for area regulation requirement (ARR) allocation in power grids, a control strategy considering energy storage participation in regional power grid automatic generation control (AGC) is proposed. Methods First, the regulation requirements of the regional power grid are divided into four zones: normal, sub-emergency, emergency, and dead zones. Then, based on large-scale energy storage ARR allocation, the regulation power of energy storage in AGC is calculated, and a balanced distribution strategy for state of charge (SOC) among energy storage stations is optimized. Finally, a priority rule is designed to prioritize energy storage system response under emergency conditions, ensuring effective coordination of frequency regulation resources. Results Case analysis with actual data from a specific region shows that this strategy outperforms traditional AGC methods in terms of control performance standard (CPS) indicator and frequency control accuracy, verifying the effectiveness of the proposed strategy. Conclusions This strategy effectively addresses the coordination of multiple control resources in frequency regulation, provides strong support for enhancing power grid stability and frequency regulation performance, and is of great significance for improving the reliability and stability of power grid operation.

Key words: regional power grid, energy storage system, power system, automatic generation control (AGC), frequency regulation resources, state of charge (SOC), regulation requirement, control strategy

CLC Number:

TK 02

Xiao LI, Yuchen HAO, Kaiming LUO, Weimin ZHU, Hao LI, Binqi GUO. Regional Power Grid Automatic Generation Control Strategy Considering Energy Storage Participation[J]. Power Generation Technology, 2026, 47(2): 315-324.

Figures/Tables 13

Fig. 1 Schematic diagram of ARR calculation process

Fig. 2 Schematic diagram of the four regulation requirement zones

Fig. 3 Corresponding relationship among energy storage stations, energy storage control groups and provincial control areas

Tab. 1 Control strategies for different control groups

类型	优先级	调节模式	控制模式
储能控制组	1	紧急调节(P_R≥120 MW)	SCHE/BASE
燃机控制组	2	紧急调节(P_R≥120 MW)	SCHE
煤机控制组	3	正常调节	AUTO

Fig. 4 AGC regulation zone division and regulation resource grouping

Fig. 5 Comparison of CPS1 index and ACE mean square error under different methods

Fig. 6 AGC signal and total output curve of three frequency regulation resources

Fig. 7 Output curves of three frequency regulation resources

Fig. 8 Comparison of ACE curves before and after EESS participation in frequency regulation

Tab. 2 Results of different control groups participating in frequency regulation

参数	煤机	燃机	储能
控制组个数	84	37	9
指令个数	87 418	22 474	6 922
指令占比/%	73.8	19.3	6.9
调节里程/MW	409 317	28 735	21 025
里程占比/%	88.1	7.1	4.8
调节速度/min^-1	1.59%P_N	2.41%P_N	75.17%P_N
调节精度/%	0.37	0.86	0.43

Fig. 9 Comparison of CPS1 indicators before and after EESS commissioning

Fig. 10 SOC curves of energy storage station under power control

Fig. 11 Operating curve of a energy storage station under power control

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