共查询到20条相似文献,搜索用时 15 毫秒
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This paper presents a comparison study among three bio-inspired optimization algorithms applied to solve the power system stabilizers tuning problem: Ant Colony Optimization, Bat Algorithm and Genetic Algorithm. The tuning procedure is formulated as an optimization problem which aims at minimizing the system damping taking into account a set of pre-specified operating scenarios. The proposed methodologies are applied to stabilizers tuning of the well-known New England test system. 相似文献
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This paper studies the problem of MPPT (maximum power point tracking) for photovoltaic systems. The paper offers new solution framework for the above mentioned popular problem in two senses. Firstly a novel MPPT technique is presented. The main idea behind it is to improve the computational efficiency of the traditional incremental conductance tracking algorithm. This is achieved by integration with the fractional open circuit voltage method leading to fast and accurate convergence to the MPP. Secondly, with the aid of certain class of meta-heuristics search algorithms – inspired from the real ant behavior – the MPPT problem is amenable to solution for two different and well known control schemes namely incremental conductance plus proportional integral controller and fuzzy control. A comparison with conventional approach reflects the superiority of the new framework even under fast changing climatic conditions. 相似文献
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对遗传算法和PID控制器做了简单的介绍,提出了一种应用遗传算法对PID控制器参数进行优化设计,重点介绍了遗传算法的优化过程。文章通过实例对几种参数整定方法的控制效果进行了仿真和比较,证明了基于遗传算法的PID参数整定方法的可行性和良好的控制效果。最后将该算法应用于气流炸药生产线的风速控制,取得了预期的控制效果。 相似文献
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本文探讨了快速有功补偿器对电力系统阻尼的影响,并和快速无功补偿器的阻尼作用进行了比较,研究表明,这种FACTS装置为抑制系统低频振荡提供了强有力的手段。 相似文献
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本文以蚁群算法为基础,提出了一种新的非线性PID控制器及其参数优化设计方法。该控制器是基于PID控制器各增益参数与误差信号之间呈现非线性关系,根据一般控制系统的阶跃响应曲线,在不同响应时间阶段PID3个增益调节参数的理想变化情况,提出根据控制信号与误差、误差变化率之间的调节规律,拟合一组增益参数的非线性函数,并利用蚁群算法搜索出一组最优的非线性PID参数,构造最优非线性PID控制器。计算机仿真结果表明,与基于遗传算法(GA)、模拟退火算法(SA)和Z—N法设计的PID控制器(GA—PID、SA-PID、ZN-PID)相比,这种基于蚁群算法的非线性PID控制器(NLAS-PID)具有良好的动态和稳态性能,可用于控制多种不同的对象和过程。 相似文献
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A. Chatterjee 《International Journal of Electrical Power & Energy Systems》2011,33(3):657-672
In this paper, chaotic ant swarm optimization (CASO) is utilized to tune the parameters of both single-input and dual-input power system stabilizers (PSSs). This algorithm explores the chaotic and self-organization behavior of ants in the foraging process. A novel concept, like craziness, is introduced in the CASO to achieve improved performance of the algorithm. While comparing CASO with either particle swarm optimization or genetic algorithm, it is revealed that CASO is more effective than the others in finding the optimal transient performance of a PSS and automatic voltage regulator equipped single-machine-infinite-bus system. Conventional PSS (CPSS) and the three dual-input IEEE PSSs (PSS2B, PSS3B, and PSS4B) are optimally tuned to obtain the optimal transient performances. It is revealed that the transient performance of dual-input PSS is better than single-input PSS. It is, further, explored that among dual-input PSSs, PSS3B offers superior transient performance. Takagi Sugeno fuzzy logic (SFL) based approach is adopted for on-line, off-nominal operating conditions. On real time measurements of system operating conditions, SFL adaptively and very fast yields on-line, off-nominal optimal stabilizer variables. 相似文献
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蚁群优化算法及其在电力系统中的应用 总被引:4,自引:3,他引:4
蚁群优化算法是意大利学者M Dorigo受蚂蚁觅食行为的启发 ,提出的一种新型组合优化算法 ,具有正反馈、分布式计算等特点 ,已在许多问题中得到成功的应用。本文对蚁群优化算法的研究现状作一综述 ,并指出在电力系统中可能的应用方向 相似文献
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Susumu Yoshida Takuya Kamano Takayuki Suzuki Hironobu Harada 《Electrical Engineering in Japan》1996,117(3):76-86
This paper considers a genetic algorithm application to feedforward controllers of speed servo and positioning systems. The system consists of a conventional feedback controller and a feedforward controller. The parameters of the feedforward controller are regarded as the chromosome on a gene. The genetic algorithm is used to tune the parameters of the feedforward controller, the objective of which is to make the feedforward controller a dynamic inverse of the plant. The tracking error between the desired output and the actual output at every sampling period is used to calculate the fitness of one gene. The range of mutation is dependent on the magnitude of the tracking error, which ensures parameter convergence. The effect of fitness function and the width of mutation on tracking performances is investigated. The experimental results demonstrate the effectiveness of the proposed genetic algorithm in improving tracking performances. 相似文献
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电力系统中无功功率的优化配置在电网经济运行中占有十分重要的地位,无功优化问题是一个复杂的组合优化问题,蚁群算法是用于解决组合优化问题的一种高效的随机化内启发式全局搜索技术。文中采用改进的蚁群算法来解决配电网络无功优化问题,建立了相应的数学模型。并以某城市配电网无功优化结果表明这种方法搜索效率高易于找到全局最优解的优点。 相似文献
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采用电磁场有限元仿真软件Jmag-studio,建立高速开关磁阻电机的模型,给出了功率变换电路,构建了一个完整的仿真系统。通过对不同结构的高速SRM进行计算,得到了SRM随转子位置变化的电感曲线,同时得到了转矩和相电流曲线。 相似文献
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