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具有FACTS设备的输电网络规划 总被引:2,自引:0,他引:2
利用改进的遗传算法MAGA进行具有FACTS设备的输电网络规划,算例系统的结果表明MAGA适用于解决具有FACTS设备的电网规划问题,而且在电网的扩建和改造方面。FACTS技术将带来很大的经济效益。 相似文献
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介绍了江苏省电网能量管理系统和利港、华通南通电厂350MW机组协调控制系统的概况。对自动发电控制(AGC)的基本概念和负荷频率控制(LFC)的数据通信处理程序、区域控制误差(ACE)计算、机组控制模式、机组控制的原理和方式作了阐述。通过对南通电厂ADS接口逻辑功能的改进与组态,在利港、华能南通电厂进行了AGC联调试验,取得了自动发电控制BA、RM、TE方式闭环控制的成功。江苏省网AGC工作取得了可 相似文献
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常规自动发电控制(AGC/ED)因受其数学模型及算法本身的局限,难以解决诸如“LFC-ED的协调”、“电网安全约束的考虑”、“电网分层控制体系结构下各级自动发电控制模式相适应”等问题,在我国大型电网中的应用受到极大限制。文章试图探讨改进常规AGC/ED的数学模型及算法,探讨采用现代控制理论设计的AGC/ED闭环控制系统的技术特点,提出改进和发展适合我国大型电网自动发电控制的模式。 相似文献
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俄罗斯统一电力系统反事故自动装置的一些技术特性 总被引:2,自引:0,他引:2
俄罗斯统一电力系统反事故自动装置的一些技术特性阿布拉缅科娃H.A.彼得罗夫A.M.波波夫西伯利亚电网设计院,俄罗斯新西伯利亚市SOMECHARACTERISTICSOFEMERGENCYCONTROLDEVICESFORRUSSIANINTEGRAT... 相似文献
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PFC芯片ML4821的工作原理及其应用TheOperationPrincipleandApplicationofPFCICML4821解放军信息工程学院师宇杰(郑州450002)电器设备的功率因数过低,会加重电网的负载,造成电网容量的浪费。功率因... 相似文献
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自动发电控制(AGC)在我国电网中的应用(二) 总被引:1,自引:0,他引:1
自动发电控制(AGC)在我国电网中的应用(二)TheApplicationofAGCinourPowerNetwork周全仁(湖南省电力调度通信局·长沙·410007)4.1.3湖南电网AGC的运行试验(1)机组响应特性测试采用AGC的控制特性对单一... 相似文献
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原有的PGL固定式低压开关柜已逐步被GGL1、GGD所替代;BFC抽出式低压开关柜已逐步被MNS、DOMINO、金钟默勒以及GCK、GCL和GCS等所替代。其中MNS等其主母线最大载流量达5000A、动热稳定性100kA(有效值)和250kA(最大值)、防护等级达IP54、抽屈单元的容量达630A、单台柜子单元控制回路达36个。这些指标都接近国外同类产品先进水平。该文还指出低压开关柜的发展趋势是: 相似文献
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美国强磁中心(NHMFL)介绍及值得我国借鉴的一些做法姚为克(驻休斯敦总领事馆)1NHMFL简介美国国家强磁中心(NATIONALHIGHMAGNETICFIELDLABORATORY,简称NHMFL)的主体部分位于佛罗里达州塔拉哈西(Tallaha... 相似文献
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Yogesh Krishan Bhateshvar Hitesh Datt Mathur Houria Siguerdidjane Surekha Bhanot 《电力部件与系统》2015,43(2):146-156
Abstract—This article develops a model of load frequency control for an interconnected two-area thermal–hydro power system under a deregulated environment. In this article, a fuzzy logic controller is optimized by a genetic algorithm in two steps. The first step of fuzzy logic controller optimization is for variable range optimization, and the second step is for the optimization of scaling and gain parameters. Further, the genetic algorithm-optimized fuzzy logic controller is compared against a conventional proportional-integral-derivative controller and a simple fuzzy logic controller. The proposed genetic algorithm-optimized fuzzy logic controller shows better dynamic response following a step-load change with combination of poolco and bilateral contracts in a deregulated environment. In this article, the effect of the governor dead band is also considered. In addition, performance of genetic algorithm-optimized fuzzy logic controller also has been examined for various step-load changes in different distribution unit demands and compared with the proportional-integral-derivative controller and simple fuzzy logic controller. 相似文献
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Provas Kumar Roy S. P. Ghoshal S. S. Thakur 《Electrical Engineering (Archiv fur Elektrotechnik)》2010,92(4-5):173-184
In this work, biogeography-based optimization (BBO) is presented for solving different constrained economic load dispatch (ELD) problems combined with economic emission aspects in power system. Nonlinear characteristics of generators like valve point discontinuities, ramp rate limits and prohibited operating zones are considered in the problem. The simulation results show that the proposed BBO algorithm based solutions prove to be the best near-global optimal as compared to the solutions based on Newton–Raphson, Tabu search, genetic algorithm (GA), non-dominated sorting genetic algorithm (NSGA), fuzzy logic controlled genetic algorithm (FCGA), particle swarm optimization (PSO) and differential evolution (DE). 相似文献
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基于遗传算法的模糊式电力系统稳定器自寻优设计法 总被引:1,自引:0,他引:1
通过对模糊控制器工作原理的深入分析,提出了模糊控制本质上是一种分段定常控制的观点,并以此为基础,提出了模糊式电力系统稳定器的自寻优设计新方法,它将模糊控制器的整个设计过程转化成对一组参数进行寻优的过程,解决了在传统设计过程中存在的规则难于获取和参数值难于确定的问题。为了提高多参数寻优的效率,文中提出了一种群体差异度遗传算法,它可以大幅度地缩小搜索空间,从而极大地减少了参数优化过程中的计算工作量。仿真结果显示,用该方法设计的模糊式电力系统稳定器的性能得到了较大提高。 相似文献
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An intelligent control proposal for battery equalization is presented by genetic algorithm optimization integrated with fuzzy logic control–neural network algorithm. First, an effective two-stage DC/DC converter architecture is developed, which pave the way for the hardware module. Then, an equivalent circuit model in weighted combination with ampere-hour counting method is adopted by fuzzy logic control scheme to obtain static SOC estimation. Then the dynamic battery SOC is precisely estimated on basis of static SOC by means of neural network. The most important is the genetic algorithm optimization for battery equalization to improve the energy efficiency and time efficiency of the equalization system. Finally, certification of simulation is demonstrated to validate the proposed novel equalization scheme. 相似文献
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Binod Shaw 《International Journal of Electrical Power & Energy Systems》2011,33(10):1728-1738
Seeker optimization algorithm (SOA) is a new heuristic population-based search algorithm. In this paper, SOA is utilized to tune the parameters of both single-input and dual-input power system stabilizers (PSSs). In SOA, the act of human searching capability and understandings are exploited for the purpose of optimization. In SOA-based optimization, the search direction is based on empirical gradient by evaluating the response to the position changes and the step length is based on uncertainty reasoning by using a simple fuzzy rule. Conventional PSS (CPSS) and the three dual-input IEEE PSSs (namely PSS2B, PSS3B and PSS4B) are optimally tuned to obtain the optimal transient performances. From simulation study it is revealed that the transient performance of the dual-input PSS is better than the single-input PSS. It is further explored that among the dual-input PSSs, PSS3B offers the best optimal transient performance. While comparing the SOA with recently reported optimization algorithms like bacteria foraging optimization (BFO) and genetic algorithm (GA), it is revealed that the SOA is more effective than either BFO or GA in finding the optimal transient performance. 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 parameters. 相似文献
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在基于径向基函数神经网络(RBFNN)的电力系统短期负荷预测的基础上,采用量子粒子群优化算法(QPSO)优化神经网络权值,并运用模糊理论进行修正预测模型,提出基于QPSO-RBFNN和模糊理论的电力系统短期负荷预测方法.仿真实例计算结果表明该方法收敛速度快、预报精度高,具有工程应用前景. 相似文献
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对于工业控制中广泛存在的多容量、大惯性、大延迟的被控对象,模糊控制是一种较有效的方法,模糊控制中隶属函数的正确选择是模糊控制器设计的关键,针对传统的获取隶属度函数方法的不足,本文设计了一种基于遗传算法的模糊控制器,系统采用遗传算法优化模糊控制器的隶属函数及其量化因子和比例因子的初值.仿真结果表明,采用该算法设计的模糊控制器较传统的PID控制器与模糊控制器具有鲁棒性强、超调量小的特点.这种改进型的模糊控制器具有良好的控制性能,体现了遗传算法在参数寻优方面的优越性. 相似文献