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一种新的优化协调控制在轻型直流输电中的应用
引用本文:胡兆庆,毛承雄,陆继明.一种新的优化协调控制在轻型直流输电中的应用[J].中国电机工程学报,2005,25(8):41-49.
作者姓名:胡兆庆  毛承雄  陆继明
作者单位:华中科技大学电气与电子工程学院,湖北省,武汉市,430074
摘    要:轻型直流输电是一种新型的直流传输技术,采用电压源型(VSC)换流站以及PWM控制技术。建立了轻型直流输电系统模型,提出一种在发电机励磁和轻型直流输电之间优化协调控制方法,用于改善系统暂态稳定和抑制系统故障后振荡。作为算例,该协调控制方法被用于含有轻型直流输电的多机系统,并将该优化协调控制与发电机励磁、轻型直流输电系统相互独立的控制做一比较,仿真结果表明,在系统大小扰动下,该控制能够给系统提供更好的阻尼特性。

关 键 词:轻型直流输电  协调控制  优化  PWM控制技术  发电机励磁  应用  直流输电系统  控制方法  传输技术  电压源型  系统模型  系统故障  暂态稳定  多机系统  相互独立  仿真结果  阻尼特性  换流站  小扰动  在系统  振荡

APPLICATION OF A NOVEL OPTIMAL COORDINATED CONTROL TO HVDC LIGHT
HU Zhao-qing,MAO Cheng-xiong,LU Ji-ming.APPLICATION OF A NOVEL OPTIMAL COORDINATED CONTROL TO HVDC LIGHT[J].Proceedings of the CSEE,2005,25(8):41-49.
Authors:HU Zhao-qing  MAO Cheng-xiong  LU Ji-ming
Abstract:HVDC Light is a new HVDC transmission system, based on Voltage Source Converters (VSC) and Pulse Width Modulation (PWM). The mathematical model of HVDC Light is established, an optimal coordinated control between the generator excitation and HVDC Light is proposed. The proposed controller is used to improve transient stability of the power system and to damp prolonged oscillation after a fault is cleared. Then the optimal coordinated control algorithm is applied to multi-machine power system with HVDC Light. The comparison is made between the proposed controller and independent controller for generator excitation and HVDC Light, the simulation results demonstrate that the proposed control strategy provides better damping characteristics.
Keywords:Power system  HVDC Light  VSC  PWM  Coordinated control  Model
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