| 引用本文: | 付媛,张保泽,张祥宇,张跃.虚拟同步耦合下储能的频率支撑与功率振荡多目标协调控制[J].电力自动化设备,2024,44(9):1-9,23 |
| FU Yuan,ZHANG Baoze,ZHANG Xiangyu,ZHANG Yue.Multi-objective coordinated control of frequency support and power oscillation for energy storage under virtual synchronous coupling[J].Electric Power Automation Equipment,2024,44(9):1-9,23 |
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| 摘要: |
| 准确评估系统惯量、阻尼和一次调频需求，弱化虚拟同步机阻尼支撑和一次调频间的耦合性，是实现储能并网发电系统多目标协调控制的关键。基于同步机的功率响应方程，建立虚拟调速器系统，弱化虚拟同步机单位调节功率和阻尼的耦合性。根据同调发电系统的频率稳定约束，量化评估储能的单位调节功率和惯量需求，以保障系统频率安全。根据阻尼比约束设计储能阻尼，以保障同调发电系统的振荡抑制能力，并结合频率安全需求提出含虚拟调速系统的虚拟同步多目标协调主动支撑控制策略，充分发挥储能的惯量、一次调频及阻尼支撑潜力。搭建风储高渗透率并网仿真系统，验证所提控制策略可显著改善储能支撑系统频率稳定和抑制功率振荡的能力。 |
| 关键词: 虚拟同步机 虚拟调速器 惯量支撑 一次调频 振荡抑制 |
| DOI：10.16081/j.epae.202310001 |
| 分类号:TM761+.2 |
| 基金项目:国家自然科学基金资助项目(52277100)；中央高校基本科研业务费专项资金资助项目(2023MS101) |
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| Multi-objective coordinated control of frequency support and power oscillation for energy storage under virtual synchronous coupling |
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FU Yuan, ZHANG Baoze, ZHANG Xiangyu, ZHANG Yue
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State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Baoding 071003, China
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| Abstract: |
| Accurately evaluating the demand for power system inertia, damping and primary frequency regulation, and weakening the coupling between the damping support and the primary frequency regulation of the virtual synchronous generator are the keys to realize the multi-objective coordinated control of the energy storage grid-connected generation system. Based on the power response equation of the synchronous generator, the virtual governor system is established to weaken the coupling between the unit adjustment power and the damping of the virtual synchronous generator. Based on the frequency stability constraints of the coherent power generation system, the unit adjustment power and inertia demand of the energy storage are quantitatively evaluated to ensure frequency safety of the system. An energy storage damping based on damping ratio constraint is designed to ensure the oscillation suppression ability of the coherent power generation system. Combining the requirement of the frequency safety, a virtual synchronous generator coordinated active support control strategy with virtual governor system is proposed to fully utilize the inertia, primary frequency regulation, and damping support capabilities of energy storage. A wind storage high permeability grid-connected simulation system is established to verify that the proposed control strategy can significantly improve the ability of energy storage for system frequency support and power oscillation suppression. |
| Key words: virtual synchronous generator virtual governor inertia support primary frequency regulation oscillation suppression |
