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| 摘要: |
| 为了分析大型水轮发电机失磁过程和验证失磁保护方案，建立了包括水轮机、发电机、调整器和励磁调节装置在内的全系统数学模型，并编制了仿真软件。发电机失磁后的动态过程是比较复杂的机电过程，发电机组各个环节的结构和参数都将影响它的动态过程。在模拟发电机组上进行了失磁实验和仿真分析，实验结果验证了仿真结果的正确性。对某水电站250MW的水轮发电机进行了失磁过程的仿真研究，仿真结果对工业实际有重要参考价值。 |
| 关键词: 水轮发电机 失磁 动态过程分析 调速器 数学模型 |
| DOI： |
| 分类号:TM312 |
| 基金项目: |
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| Analysis of dynamic processes for hydro generator under low excitation and field loss |
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ZHOU Qian SU Peng sheng WANG Xiang heng
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| Abstract: |
| In order to analyze the dynamic process of large scale hydraulic generation system under low excitation and field loss, and to verify the field loss relay protection scheme, mathematical models of a generation system are built and their simulative software is programmed, which includes water turbine, hydrogenerator, speed governor and field regulator. The electromechanical process of generator field loss is complicated and its dynamic process is affected by the structures and parameters of every component in the generation system. The field loss test and simulative analysis are carried out on a simulative generation system and the experimental results verify the correctness of simulation results. The simulative analysis of field loss process is done for a 250 MW hydraulic generation system and the simulation results are valuable for industrial practice. |
| Key words: field loss,field regulator,speed governor,synchronous generator, |
