新能源经柔直送出系统的次同步振荡分析与抑制OA北大核心CSTPCD
Analysis and Mitigation of the Subsynchronous Oscillation in Renewable Energy System Connected to the MMC-HVDC
2020 年 9-10 月份,我国华北地区某新能源经柔直送出系统出现了 2～6 Hz的持续振荡,导致风电机组频繁脱网和设备损坏.该文利用现场录波数据建立系统等效阻抗网络模型,解释次同步振荡的发生原因.为解决该问题,提出在风电机组变流器控制中嵌入次同步陷波环节的振荡抑制方法,依据实测数据进行参数设计,并进行现场实施与测试.多种工况下的实测结果表明,次同步陷波环节可有效抑制振荡且不影响风电机组的正常运行.该方法易于设计和实现,为解决类似问题提供一种高效实用的方案.
During September and October 2022,2～6 Hz sustained oscillation occurred in a renewable energy system connected to the modular multilevel converter-based high voltage DC(MMC-HVDC)in Northern China,which caused frequent tripping of the doubly-fed induction generators(DFIGs)and equipment damages.The equivalent impedance network models are established using the field recorded data to explain the cause of the oscillation.To mitigate the oscillation,inserting the subsynchronous suppression filter in the DFIG converter control is proposed.The parameter is designed using the measured data,and then field implementation and tests are conducted.Field test results under different operating conditions validate that the proposed method can effectively mitigate the oscillation without any adverse effect on normal operation.It is confirmed the proposed scheme is easy to design and implement,providing an efficient and practical solution for similar issues.
李浩志;谢小荣;刘芮彤;姜齐荣
新型电力系统运行与控制全国重点实验室(清华大学电机系),北京市 海淀区 100084国网辽宁省电力有限公司电力科学研究院,辽宁省 沈阳市 110006
动力与电气工程
新能源发电柔性直流输电次同步振荡
renewable generationmultilevel converter-based high voltage DCsubsynchronous oscillation
《中国电机工程学报》 2024 (008)
2945-2954,中插1 / 11
国家电网有限公司科技项目(5100-202199515A-0-5-ZN):"双高"电力系统稳定性控制理论和方法研究. Science and Technology Project of State Grid Corporation of China(5100-202199515A-0-5-ZN):Research on Stability Control Theory and Method in Power System with High Penetration of Renewables and Power Electronics.
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