| 引用本文: | 王顺亮,傅美霓,马俊鹏,等.基于s域节点导纳矩阵的直流馈入交流系统谐振灵敏度分析[J].电力系统保护与控制,2025,53(11):136-146.[点击复制] |
| WANG Shunliang,FU Meini,MA Junpeng,et al.Resonance sensitivity analysis of DC-fed AC systems based on s-domain nodal admittance matrix[J].Power System Protection and Control,2025,53(11):136-146[点击复制] |
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| 摘要: |
| 由于含直流系统馈入的交流系统中含有换流设备，谐振分析的建模过程更加复杂，无法同时兼顾系统的整体性和节点元件建模的多样性。基于此，提出了基于s域节点导纳矩阵的系统振荡风险分析方法。首先以系统工频等值电路节点导纳矩阵为基础，提出了一种元件等值化简后生成系统s域节点导纳矩阵的方法，并据此求解系统谐振模式。然后基于此构造交流元件参数在系统谐振模式下的振荡风险灵敏度模型，将直流系统化简后接入交流系统，分析振荡频段区间内元件参数、网络结构与谐振模式之间的灵敏度关系。最后在PSCAD/EMTDC平台搭建含直流系统馈入的交流系统模型，验证了所提元件参数灵敏度分析方法的正确性和有效性。 |
| 关键词: 谐振模式 s域节点导纳矩阵 灵敏度分析 振荡风险预判 |
| DOI：10.19783/j.cnki.pspc.240877 |
| 投稿时间：2024-07-08修订日期：2024-10-03 |
| 基金项目:国家自然科学基金项目资助(51977135) |
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| Resonance sensitivity analysis of DC-fed AC systems based on s-domain nodal admittance matrix |
| WANG Shunliang1,FU Meini1,MA Junpeng1,ZHOU Shiding2,ZHANG Yan1,LIU Tianqi1,PENG Maolan3 |
| (1. School of Electrical Engineering, Sichuan University, Chengdu 610065, China; 2. State Grid Tianfu New Area Power
Supply Company, Chengdu 610094, China; 3. EHV Power Transmission Company, CSG, Guangzhou 510663, China) |
| Abstract: |
| Due to the presence of converter equipment in DC-fed AC systems, the modeling process for resonance analysis becomes more complex, making it challenging to simultaneously account for both the overall system behavior and the diversity of individual node component models. To address this, this paper proposes a method for analyzing system oscillation risk based on the s-domain nodal admittance matrix. First, from the nodal admittance matrix of the system’s power frequency equivalent circuit, a method is introduced to derive the system’s s-domain nodal admittance matrix after component equivalence simplification, and the system resonance modes are solved accordingly. Then, a sensitivity model is developed to assess the oscillation risk of AC component parameters under system resonance conditions. After simplifying the DC system, it is integrated into the AC system, and the sensitivity relationships among component parameters, network structure, and resonance modes within oscillatory frequency ranges are analyzed. Finally, an AC system model with DC feed-in is built on the PSCAD/EMTDC platform to verify the accuracy and effectiveness of the proposed component parameter sensitivity analysis method. |
| Key words: resonance mode s-domain nodal admittance matrix sensitivity analysis oscillation risk prediction |
