STATCOM对感应电动机负载扰动引起母线电压失稳的抑制作用研究
PDF下载 (363)李明明,李文磊 *.STATCOM对感应电动机负载扰动引起母线电压失稳的抑制作用研究[J].宁波大学学报(理工版),2015,28(04):25-30.DOI:
LI Ming-ming,LI Wen-lei *.Study: Restraining Functions of STATCOM for Instability of Bus Voltage Caused by the Load Disturbances from Induction Motor[J].Journal of Ningbo University(Natural Science & Engineering Edition),2015,28(04):25-30.DOI:
| Title: | Study: Restraining Functions of STATCOM for Instability of Bus Voltage Caused by the Load Disturbances from Induction Motor |
| 作者: | 李明明, 李文磊 * |
| Author(s): | LI Ming-ming, LI Wen-lei * |
| 关键词: | 电压失稳; 感应电动机; 负载扰动; 无功功率 |
| Keywords: | voltage instability; induction motor; load disturbances; reactive power; STATCOM |
| 分类号: | TM712 |
| 文献标识码: | A |
| 摘要: | 鉴于感应电动机的负载扰动是电压失稳的一个主要原因, 因此提出在临界转差率下, 感应电动机消耗的无功功率与负载转矩近似相等这一观点; 在此基础上, 根据节点电压与无功功率的关系, 推导出感应电动机接入点母线电压临界稳定值与负载转矩之间的具体关系式. 设计了STATCOM控制系统, 基于MATLAB/SIMULINK对含感应电动机和STATCOM的一个配电系统进行仿真. 仿真结果表明了观点与表达式的正确性, 也揭示了STATCOM在稳定母线电压的基础上能够提高感应电动机的带负载能力, 说明STATCOM对负荷引起的电压失稳具有抑制作用. |
| Abstract: | The load disturbance of induction motor is one of the main reasons for bus voltage instability. The viewpoint is proposed that the reactive power consumed by induction motors is approximately equal to load torque in the critical slip. On this basis, the specific relationships is investigated between bus voltage and load torque. The control system of Static Synchronous Compensator (STATCOM) is then designed, and a power distribution system including induction motor and STATCOM is simulated using MATLAB/SIMULINK. Not only does the simulation results verify the correctness of the relationship between load torque and motor consumption, as well as the relationship between the minimum bus voltage and load torque in the critical stability, but also the fact that STATCOM can improve the stability of bus voltage and load capacity of the motor. This research proves that the STATCOM has the ability to restrain the voltage instability. |
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| 备注/Memo: | 收稿日期: 2014-07-15. 宁波大学学报（理工版）网址: http://journallg.nbu.edu.cn/ 基金项目: 浙江省科技厅重点科技创新团队自主设计项目（2010R50004, 2012R10004-03）. 第一作者: 李明明（1989－）, 男, 江苏东海人, 在读硕士研究生, 主要研究方向: 电力系统稳定性控制. E-mail: mmlsvg@163.com *通信作者: 李文磊（1970－）, 男, 吉林农安人, 博士/副教授, 主要研究方向: 电力系统稳定性控制. E-mail: liwenlei@nbu.edu.cn 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ |
