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This paper presents novel power system stabilizers (PSS) tuning approach with particles swarm optimization (PSO) driven knowledge domain states mapping for multi area power system. Tuning of PSS parameters has been done by PSO technique offline at different operating conditions as load dynamics change. The objective function for PSS parameters tuning is integral time multiplied by absolute error (ITAE). The sets of tuned parameters at different operating conditions thus obtained are termed as knowledge domain. The process is viewed as knowledge domain mapping. The dynamical system response has been linked with states, and if there is any violation from desired limits, control action is initiated and thus retuned control parameters obtained straight away from the respective knowledge domain helps to provide quick response and precise damping of signals of interest. Proposed concept also demonstrates that if one controller (PSS) fails to stabilize the system at certain operating condition then another controller (UPFC) connected in the system acts as supplementary controller in automation which assists PSS functioning and thus entire system operation improves by way of modulating the signal dynamics at interface points which quickly damps oscillations. The system study has been performed on a sample six area power systems comprising of UPFC connected between area two and three and PSS to all areas. The proposed concept demonstrates auto tuning of PSS for quick oscillation damping as the operating conditions change and also under situations of PSS failure due to relatively larger perturbation, UPFC acts as supplementary controller by assisting the entire system PSS to recover ensuring stability. 相似文献
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在稳定平台控制系统中分析了载体扰动产生的干扰力矩及对视线角引起的摆动,分析了选择不同的视线角速度输出点时对视线角速度、隔离度的影响及对控制系统传函的要求,为选择电机输出力矩、选择陀螺量程及控制系统传函的设计提供了理论依据.在分析的基础上构建了数字仿真试验系统,仿真表明视线角速度输出有较好的品质和较高的隔离度. 相似文献
4.
沈宪章 《郑州大学学报(工学版)》1988,(4)
自动控制系统中经常采用ITAE准则,但应用分析法求取ITAE值却是困难的,本文提出了一种采用微型机求取自动控制系统ITAE值的方法,较好地解决了这一难题。 相似文献
5.
主动磁力轴承通常采用PID控制,但由于磁力轴承具有高度的非线性,传统的PID参数整定方法往往效果不佳。采用线性规划中面向多变量寻优的单纯形法对PID参数进行寻优,并采用改进的ITAE性能指标对响应性能进行评价,给出了详细的寻优步骤。Matlab环境下的仿真结果表明,经单纯形法进行参数寻优后的PID控制器可以较好地实现转子的快速起浮和稳定悬浮。 相似文献
6.
位移无静差ITAE最优传递函数的研究 总被引:1,自引:0,他引:1
位移无静差ITAE最优传递函数具有较好的平稳性和快速性,是一组适用于工程控制系统的最优参数。首先介绍了ITAE最优传递函数,然后研究了ITAE最优传递函数的极点分布、时域响应和频域响应,最后研究了ITAE最优传递函数的分母多项式系数与加权矩阵的关系。研究结果将大大促进ITAE最优传递函数的广泛应用,为进一步研究ITAE最优控制问题打下基础。 相似文献
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一类单容纯时滞系统二次优化控制 总被引:27,自引:4,他引:23
本文研究受控对象为Ga(p)=K/1+Tpe^-LP和Gb(p)=K/pe^-LP二次优化控制,给出一个经验公式。用以确定二次优化控制器的优化参数,可以节省了大量仿真寻优机量,结果表明,二次优化控制兼有Smith预估器全补偿纯时滞和状态反馈两类控制器的优点,性能指标好,鲁棒性强,尽管Ga(p)和Gb(P)两者结构不同,但它们二次优化系统性能指标相近,一阶模型无超调,二阶模型σ2%≤2%,三阶模型, 相似文献
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推荐两种滤波器作为IMC系统的滤波器。一种是ITAE滤波器,它符合时间乘绝对误差积分值最小的优化原则,即J=│e│tdt→min。另一种是Butterworth滤波器,它具有很好的理想低通滤波器特性。由于这两种滤波器的全部结构极点均处于S复平面的高稳定性区域,又是按最优原理确定其参数,因此,采用这两种滤波器可以抑制模型失配导致的不良影响,使得IMC系统的鲁棒性更加有保证。本文列举一个工业过程控制例 相似文献
10.
This paper presents the performance evaluation of power oscillation damping controller based on firefly algorithm (FA) parameter tuning. The power system stabilizer (PSS), unified power flow controller (UPFC), and static synchronous series compensator (SSSC) are tuned with FA by minimizing integral time multiplied by absolute error (ITAE) as an objective function. An integrated multi-stage linear quadratic regulator – power oscillation damping UPFC/SSSC has been proposed with precise tuning of control parameters which results in overall states' oscillation damping as compared to other classical methods. It has been observed that the proposed control structure damps the oscillations adequately and is modular in design methodology. The sample power system comprising six areas has been considered to demonstrate the effectiveness of the concept. The software has been developed based on the proposed work by the authors and the MATLAB code has been generated in R2009b version. The states' inter-relation which has been shown with eigenvalues reflects a better regulation and the step response is also validated. 相似文献