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1.西安交通大学电气工程学院,陕西省西安市 710049
2.中国南方电网电力调度控制中心,广东省广州市 510663
3.南方电网科学研究院有限责任公司,广东省广州市 510663
Received:15 August 2023,
Revised:2024-03-11,
Published Online:15 July 2024,
Published:25 August 2024
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李崇涛,陈亦平,杨若朴等.交⁃直⁃交异步系统准同步控制下直流动态功频响应特性分析[J].电力系统自动化,2024,48(16):59-67.
LI Chongtao,CHEN Yiping,YANG Ruopu,et al.Analysis on Characteristics of DC Dynamical Power and Frequency Response for AC-DC-AC Asynchronous-interconnection System Under Quasi-synchronous Control[J].Automation of Electric Power Systems,2024,48(16):59-67.
李崇涛,陈亦平,杨若朴等.交⁃直⁃交异步系统准同步控制下直流动态功频响应特性分析[J].电力系统自动化,2024,48(16):59-67. DOI: 10.7500/AEPS20230815004.
LI Chongtao,CHEN Yiping,YANG Ruopu,et al.Analysis on Characteristics of DC Dynamical Power and Frequency Response for AC-DC-AC Asynchronous-interconnection System Under Quasi-synchronous Control[J].Automation of Electric Power Systems,2024,48(16):59-67. DOI: 10.7500/AEPS20230815004.
经直流输电互联的异步系统通过对直流输电实施附加控制
可实现异步系统的准同步运行,达到实时共享异步系统调频资源的目的。但在准同步控制的工程实践中,不合理的控制结构或参数配置将导致系统出现非预期的功率波动。首先,根据直流准同步附加控制
构建准同步系统的动态功频响应分析模型;然后,基于该模型分析了直流控制参数对功率振荡的影响;进而,分析准同步控制导致的功率波动与传统功角振荡的异同;最后,以准同步实验过程中出现的功率波动为例进行分析验证,提出抑制直流功率波动的建议
并对准同步控制进行了讨论。
The asynchronous system interconnected by DC transmission can realize quasi-synchronous operation of the asynchronous system and achieve the goal of real-time sharing of frequency regulation resources by implementing additional control on the DC transmission. However
in the engineering practice of quasi-synchronous control
unreasonable control structure or parameter configuration can lead to unexpected power fluctuations in the system. First
a dynamical power and frequency response analysis model of the quasi-synchronous system is constructed based on the additional quasi-synchronous DC control. Then
the influence of DC control parameters on power oscillations is analyzed based on this model. Furthermore
the similarities and differences between power fluctuations caused by quasi-synchronous control and traditional angle oscillations are analyzed. Finally
the analysis and verification are conducted by using the power fluctuations that occurred during the quasi-synchronous experiment process
and recommendations for suppressing DC power fluctuations are proposed
along with a discussion on quasi-synchronous control.
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