首页 | 本学科首页   官方微博 | 高级检索  
     

多馈入直流输电系统小信号调制器的协调优化整定
引用本文:金丽成,刘海峰,徐政.多馈入直流输电系统小信号调制器的协调优化整定[J].电力系统自动化,2003,27(16):10-15.
作者姓名:金丽成  刘海峰  徐政
作者单位:浙江大学电气工程学院,浙江省杭州市,310027
基金项目:国家重点基础研究专项经费资助项目 (G19980 2 0 310 ),国家自然科学基金资助项目 (5 0 2 770 34)
摘    要:分析了多馈入交直流并联输电系统中各直流系统之间可能存在的不良相互作用。提出了对各直流小信号调制器参数进行协调整定的必要性,并将参数的协调整定问题归结为控制器结构已知但有若干未定参数可供优化的数学规划问题,所选的目标函数是与各交流联络线的有功功率和各发电机的功角相关的。基于NETOMAC软件平台,采用程序自带的非线性优化模块,可同时对这些参数进行优化,这种参数整定方法本身已考虑了交直流电力系统固有的非线性特性而不必显式导出整个系统的数学模型,因而不需要进行网络简化或线性化近似,这种方法对大规模交直流电力系统的控制器参数整定具有独到的优势。构造了一个含有两个区域间低频振荡模式的双馈入交直流输电系统,并对该系统的各直流小信号调制器参数进行了协调优化整定,仿真结果表明,经过协调优化后得到的直流小信号调制器能提高整个交直流系统的阻尼性能,并具有良好的鲁棒性。

关 键 词:直流输电系统  小信号调制器  协调控制  参数优化
收稿时间:1/1/1900 12:00:00 AM
修稿时间:1/1/1900 12:00:00 AM

COORDINATION AND OPTIMIZATION OF SMALL SIGNAL MODULATORS IN MULTI-INFEED HVDC SYSTEMS
Jin Licheng,Liu Haifeng,Xu Zheng.COORDINATION AND OPTIMIZATION OF SMALL SIGNAL MODULATORS IN MULTI-INFEED HVDC SYSTEMS[J].Automation of Electric Power Systems,2003,27(16):10-15.
Authors:Jin Licheng  Liu Haifeng  Xu Zheng
Abstract:Because there may exist negative interactions among HVDC small signal modulation controllers in multi-infeed HVDC systems, it is necessary to tune the parameters of the HVDC modulators coordinately. This is equivalent to solve a non-linear programming problem provided that the structures of the HVDC modulators are known. The objective function is considered to consist of the active power in the AC inter-ties and the rotor angles of all the generators. The parameters of the HVDC modulators can be optimized simultaneously with an inherent non-linear optimization module of NETOMAC. The presented parameter tuning procedure has itself included the non-linear nature of the AC/DC system and does not need to manually derive the explicit mathematical model of the whole system, and hence system simplification and linearization are not needed. A dual-infeed HVDC system with two lightly damped inter-regional oscillation modes is constructed to demonstrate the effectiveness of the presented parameter tuning procedure. Simulation results show that the optimized HVDC modulators can improve the damping of overall power oscillations in the dual-infeed HVDC system. Furthermore, the optimized modulators are robust to changes in system configurations, operating conditions and fault modes. This project is supported by National Key Basic Research Special Fund of China (No. G1998020310) and National Natural Science Foundation of China (No. 50277034).
Keywords:HVDC system  small signal modulator  coordinated control  parameter optimization
本文献已被 CNKI 维普 万方数据 等数据库收录!
点击此处可从《电力系统自动化》浏览原始摘要信息
点击此处可从《电力系统自动化》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号