| 引用本文: | 邹明,许建中,赵成勇.具备内部故障仿真能力的永磁同步发电机电磁暂态建模与仿真方法[J].电力自动化设备,2024,44(4):151-157 |
| ZOU Ming,XU Jianzhong,ZHAO Chengyong.Electromagnetic transient modeling and simulation method of PMSG with internal fault simulation ability[J].Electric Power Automation Equipment,2024,44(4):151-157 |
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| 摘要: |
| 对永磁同步发电机(PMSG)内部定子绕组故障的精确建模与仿真有助于设计有效的状态检测系统和控制保护策略。首先对PMSG内部故障特征进行分析和详细的数学推导，给出了适合电磁暂态(EMT)建模的状态空间形式的动态方程。进而提出了一种PMSG内部故障EMT建模与仿真方法，并推导出其等效电路。利用MATLAB对推导出的方程进行了数值计算迭代求解，并在PSCAD/EMTDC中搭建了PMSG测试模型，与数值计算结果进行分析和对比验证。分析结果表明，PMSG内部故障会在短路路径中产生较大的循环故障电流，但是从发电机外部特性很难判断是否发生内部故障。对比验证结果表明，所建立PMSG内部故障EMT模型可准确反映内部故障特征，验证了所提建模方法的正确性。 |
| 关键词: 永磁同步发电机 定子绕组内部故障 数值计算 电磁暂态 等效模型 |
| DOI：10.16081/j.epae.202306022 |
| 分类号:TM743 |
| 基金项目:国家自然科学基金资助项目(52277094)；中国华能集团有限公司总部科技项目(HNKJ20-H88) |
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| Electromagnetic transient modeling and simulation method of PMSG with internal fault simulation ability |
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ZOU Ming, XU Jianzhong, ZHAO Chengyong
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State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China
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| Abstract: |
| Accurate modeling and simulation of the internal stator winding faults of permanent magnet synchronous generator(PMSG) are helpful to design an effective state detection system and control protection strategy. First, the internal fault characteristics of PMSG are analyzed and mathematically derived in detail. The dynamic equations in state space form suitable for electromagnetic transient(EMT) modeling is given. Then the methods of EMT modeling and simulation under PMSG internal faults are proposed, and the equivalent circuit is derived. The derived equations are solved by numerical calculation and iterative solution using MATLAB. Then the PMSG test model is established in PSCAD/EMTDC to analyze and compare with the numerical calculation results. The analysis results show that the internal faults produce a large fault current in the short circuit path and it is difficult to judge whether the internal fault occurs from the external characteristics of PMSG. The comparison and verification results show that the established internal fault EMT model of PMSG can accurately reflect the characteristics, which verifies the correctness of the proposed modeling method. |
| Key words: permanent magnet synchronous generator internal stator winding faults numerical calculation electromagnetic transient equivalent model |
