考虑储能荷电状态及频率恢复特性的改进型灵活虚拟惯性控制
TM31; 基于虚拟同步发电机(VSG)控制的光储系统可向电网提供虚拟惯性以增强电网的稳定性,但源端储能的荷电状态和系统频率恢复特性对虚拟惯性的灵活调节具有重要的约束作用.针对此问题,在已有研究的基础上,提出了一种改进型灵活虚拟惯性控制方法,该方法一方面根据储能极限运行状态下的荷电状态自主调节虚拟惯量的大小,避免了储能单元的深度过充及过放;另一方面在储能安全运行时根据频率变化分阶段调节虚拟惯量,在减小系统频率偏差的同时加快其恢复速度.此外,搭建了孤岛四端微电网的小信号模型,分析了关键控制参数对系统稳定性的影响规律,并给出了控制参数的设计原则.最后,通过硬件在环实验验证了所提控制方法的有效性与优...
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Published in | 电力自动化设备 Vol. 40; no. 6; pp. 100 - 114 |
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Main Authors | , , , , |
Format | Journal Article |
Language | Chinese |
Published |
华北电力大学 新能源电力系统国家重点实验室,河北 保定,071003
10.06.2020
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Subjects | |
Online Access | Get full text |
ISSN | 1006-6047 |
DOI | 10.16081/j.epae.202005026 |
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Abstract | TM31; 基于虚拟同步发电机(VSG)控制的光储系统可向电网提供虚拟惯性以增强电网的稳定性,但源端储能的荷电状态和系统频率恢复特性对虚拟惯性的灵活调节具有重要的约束作用.针对此问题,在已有研究的基础上,提出了一种改进型灵活虚拟惯性控制方法,该方法一方面根据储能极限运行状态下的荷电状态自主调节虚拟惯量的大小,避免了储能单元的深度过充及过放;另一方面在储能安全运行时根据频率变化分阶段调节虚拟惯量,在减小系统频率偏差的同时加快其恢复速度.此外,搭建了孤岛四端微电网的小信号模型,分析了关键控制参数对系统稳定性的影响规律,并给出了控制参数的设计原则.最后,通过硬件在环实验验证了所提控制方法的有效性与优越性,提高了光储VSG控制技术的工程实用价值. |
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AbstractList | TM31; 基于虚拟同步发电机(VSG)控制的光储系统可向电网提供虚拟惯性以增强电网的稳定性,但源端储能的荷电状态和系统频率恢复特性对虚拟惯性的灵活调节具有重要的约束作用.针对此问题,在已有研究的基础上,提出了一种改进型灵活虚拟惯性控制方法,该方法一方面根据储能极限运行状态下的荷电状态自主调节虚拟惯量的大小,避免了储能单元的深度过充及过放;另一方面在储能安全运行时根据频率变化分阶段调节虚拟惯量,在减小系统频率偏差的同时加快其恢复速度.此外,搭建了孤岛四端微电网的小信号模型,分析了关键控制参数对系统稳定性的影响规律,并给出了控制参数的设计原则.最后,通过硬件在环实验验证了所提控制方法的有效性与优越性,提高了光储VSG控制技术的工程实用价值. |
Author | 王慧 王毅 孟建辉 彭嘉琳 赵彭辉 |
AuthorAffiliation | 华北电力大学 新能源电力系统国家重点实验室,河北 保定,071003 |
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Title | 考虑储能荷电状态及频率恢复特性的改进型灵活虚拟惯性控制 |
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