| 引用本文: | 郭利娜,刘天琪,程道卫,李兴源,吴霞.直流多落点系统控制敏感点挖掘技术研究[J].电力系统保护与控制,2013,41(10):7-12.[点击复制] |
| GUO Li-na,LIU Tian-qi,CHENG Dao-wei,LI Xing-yuan,WU Xia.Study on digging the most sensitive control point of multi-terminal HVDC system[J].Power System Protection and Control,2013,41(10):7-12[点击复制] |
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| 摘要: |
| 针对交直流相互作用引发的低频振荡模态的抑制问题，提出了一种基于单回直流对系统功率振荡灵敏度理论的控制敏感点挖掘技术。该技术的关键步骤在于应用Prony辨识技术得到系统关键振荡模态，以及采用TLS-ESPRIT算法筛选出参与因子较大的发电机组，从而能够通过检测不同直流调制下各模态强相关机组的转速变化，找到对系统关键振荡模态调节效果最有效的一回直流线路。以一个多落点系统为实例,设计小方式控制模块验证了该方法的有效性。 |
| 关键词: 多落点 低频振荡 控制敏感点 Prony辨识 小方式调制 |
| DOI：10.7667/j.issn.1674-3415.2013.10.002 |
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| 基金项目:国家自然科学基金项目(51037003); 863计划(2011AA05A119) |
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| Study on digging the most sensitive control point of multi-terminal HVDC system |
| GUO Li-na1,LIU Tian-qi1,CHENG Dao-wei2,LI Xing-yuan1,WU Xia1 |
| () |
| Abstract: |
| In order to suppress the low frequency oscillation caused by the interaction of AC and DC system, a strategy based on sensitivity theory of single HVDC system is proposed. The key point of this strategy is using Prony algorithm to identify the critical oscillation modes and applying TLS-ESPRIT algorithm to choose the generator with high participation of system’s critical oscillation modes. By testing the rotor speed change of the important generator under different DC modulation, the most efficient DC line in damping critical oscillation mode can be found out. Simulation with small mode DC modulation controller for a multi-terminal HVDC system shows its effectiveness. |
| Key words: multi-terminal low frequency oscillation sensitive control point Prony identification small mode DC modulation |
