| 引用本文: | 周年光,王钦,姚伟,等.发电机励磁辅环控制参数对电力系统阻尼的影响分析[J].电力系统保护与控制,2018,46(20):12-22.[点击复制] |
| ZHOU Nianguang,WANG Qin,YAO Wei,et al.Influence analysis of generator excitation auxiliary control parameters on power system damping[J].Power System Protection and Control,2018,46(20):12-22[点击复制] |
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| 摘要: |
| 现有电力系统稳定分析主要考虑励磁系统主环电压控制，而忽略励磁辅助控制环节(简称励磁辅环控制)的影响。现场运行经验表明，励磁系统辅环控制对发电机组动态品质及电网稳定性有着重要影响。以国内主流励磁调节器EXC9100为例，在分别建立了含欠励限制、伏赫兹限制和过励限制这三种辅环控制的扩展Heffron-Phillips模型的基础上，采用阻尼转矩分析方法从理论上推导了这三种辅环控制的重要参数对电力系统稳定器(Power System Stabilizer, PSS)所提供的附加阻尼转矩以及其自身所提供的阻尼转矩的影响规律。最后结合发电机组实际运行工况，通过典型算例的仿真测试验证了所得规律的正确性和有效性。 |
| 关键词: 欠励限制 伏赫兹限制 过励限制 阻尼转矩分析 扩展Heffron-Phillips模型 |
| DOI：10.7667/PSPC171397 |
| 投稿时间：2017-09-19修订日期：2017-10-17 |
| 基金项目:国家自然科学基金项目资助(51577075) |
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| Influence analysis of generator excitation auxiliary control parameters on power system damping |
| ZHOU Nianguang,WANG Qin,YAO Wei,LIU Haifeng,HONG Quan,WEN Jinyu |
| (Electric Power Research Institute of State Grid Hunan Electric Power Company Limited, Changsha 410007, China;State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China) |
| Abstract: |
| Existing research on stability analysis of the power system mainly considers the main voltage control of the excitation system, and the influence of the auxiliary limiters is usually not taken into account. Field experience shows that the function of the excitation auxiliary control loops has an important influence on the dynamic qualities of generators and stabilities of power grid. Taking EXC9100 excitation regulator as an example, this paper derives the extended Heffron-Phillips models with Under Excitation Limiter (UEL), Voltage Frequency Limiter (VFL) and Over Excitation Limiter (OEL) respectively. And then based on these models, it analyzes the influence of important auxiliary control loops parameters on the additional damping torque provided by Power System Stabilizer (PSS) and their own damping torque by damping torque analysis method. Finally, combined with the actual operating conditions of the generator, a typical example of the simulation system validates the correctness and validity of the conclusions proposed. This work is supported by National Natural Science Foundation of China (No. 51577075). |
| Key words: under excitation limiter (UEL) voltage frequency limiter (VFL) over excitation limiter (OEL) damping torque analysis extended Heffron-Phillips model |
