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2018 Chinese Control And Decision Conference (CCDC)最新文献

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Research on partial discharge detection through ultra high frequency signal diffusing from GIS pouring aperture GIS浇注孔超高频信号扩散检测局部放电的研究
Pub Date : 2018-06-01 DOI: 10.1109/CCDC.2018.8407493
Liang Wang, Yuxin Shi, Weidong Guo, Zheng Yang, Rui Li
Detecting the UHF (Ultra-High Frequency) electromagnetic wave has been widely used in the measurement of various types of partial discharges in GIS (Gas Insulated Switchgear). A lot of insulators of GIS are surrounded by iron hoops in recent years, which can prevent electromagnetic wave from spreading out extremely. So it's difficult to detect the electromagnetic wave from the surface of the insulator. It is a new method to detect the electromagnetic wave diffusing from the pouring aperture in the iron hoop. However, propagation feature of UHF electromagnetic wave diffusing from pouring aperture is undiscovered due to the tiny dimension and special configuration. It's essential to develop an UHF transducer exclusively used in detecting UHF electromagnetic wave diffusing from pouring aperture. Propagation feature was simulated by FDTD (finite-difference-time-domain) method. The UHF transducer of dipole antenna was developed based on the software of CST (Computer Simulation Technology). Ultimately, detection sensibility and validity of the transducer was tested via an experimental platform of 110kV GIS. It is concluded that the electric field principal component of UHF electromagnetic wave diffusing from the pouring aperture is parallel to the short edge of pouring aperture. The primary frequency range is concentrated in 0.8-2GHz. The average equivalent height of the dipole antenna transducer achieves 8.1mm in the range of 0.8-2GHz. Partial discharge detecting sensitivity of the dipole antenna transducer detecting the partial discharge UHF signal can be lower than 25pC.
超高频(UHF)电磁波检测已广泛应用于气体绝缘开关设备中各种类型局部放电的测量。近年来,许多地理信息系统的绝缘子被铁箍包围,可以极大地防止电磁波的扩散。因此,从绝缘体表面探测电磁波是很困难的。对铁箍浇注孔扩散的电磁波进行检测是一种新方法。但由于浇筑孔尺寸小、结构特殊,未发现超高频电磁波从浇筑孔中扩散的传播特性。研制一种专门用于检测浇注孔中扩散的超高频电磁波的超高频传感器是十分必要的。采用时域有限差分法(FDTD)对传播特性进行了仿真。基于CST (Computer Simulation Technology)软件开发了偶极子天线超高频换能器。最后,在110kV GIS实验平台上对该传感器的检测灵敏度和有效性进行了测试。得出了超高频电磁波从浇注孔扩散的电场主分量平行于浇注孔短边的结论。主要频率范围集中在0.8-2GHz。偶极天线换能器的平均等效高度在0.8-2GHz范围内达到8.1mm。偶极天线换能器对局部放电UHF信号的检测灵敏度可低于25pC。
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引用次数: 1
Adaptive neural network control for a quadrotor landing on a moving vehicle 四旋翼飞行器在移动飞行器上着陆的自适应神经网络控制
Pub Date : 2018-06-01 DOI: 10.1109/CCDC.2018.8407041
Ze Qing, Ming Zhu, Zhe Wu
An autonomous vehicle landing control algorithm of a quadrotor is investigated for the situation when the quadrotor hovers above the vehicle in this paper. To facilitate the controller design, the problem of autonomous landing is converted from general trajectory tracking problem of a quadrotor to a stabilization problem of relative motion. A four-degrees-of-freedom (4-DOF) nonlinear relative motion model with four control inputs is estimated. An adaptive radial basis function neural network (RBFNN) is developed to estimate the unknown disturbance and is applied to design the controller through a backstepping technique. It is proved that all the states in the closed-loop system are uniformly ultimately bounded and the error converges to a small neighborhood of origin. Numerical simulation results illustrate the good performance of the proposed controller.
针对四旋翼飞行器悬停在飞行器上方的情况,研究了四旋翼飞行器的自主着陆控制算法。为了便于控制器的设计,将四旋翼飞行器的自主着陆问题由一般的轨迹跟踪问题转化为相对运动的稳定问题。估计了具有四个控制输入的四自由度非线性相对运动模型。提出了一种自适应径向基函数神经网络(RBFNN)来估计未知干扰,并通过反步技术将其应用于控制器的设计。证明了闭环系统的所有状态最终是一致有界的,误差收敛到一个小的原点邻域。数值仿真结果表明了该控制器的良好性能。
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引用次数: 7
Approach of linguistic group decision making based on combination weighting 2-tuple linguistic VIKOR 基于组合加权二元语言VIKOR的语言群体决策方法
Pub Date : 2018-06-01 DOI: 10.1109/CCDC.2018.8407468
Haolun Wang, Ranjun Deng
This paper presented an approach of linguistic group decision-making based on combination weighting 2-tuple linguistic VIKOR. Firstly, the 2-tuple linguistic is used to cope with assessment information of attribute values and weights that represented with linguistic variable. Subjective weights of attribute are calculated by using the weighted averaging operator for 2-tuple linguistic and the objective weights of attribute are determined based on the statistical variance. And subjective weight and objective weight are integrated into combination weight. Then, through the 2-tuple linguistic VIKOR method, the compromise ranking result of alternatives can be determined. Finally, an example analysis is given to illustrate the validity and applicability of the proposed method.
提出了一种基于组合加权二元语言VIKOR的语言群体决策方法。首先,利用二元组语言处理以语言变量表示的属性值和权重的评估信息;采用二元组语言加权平均算子计算属性的主观权重,根据统计方差确定属性的客观权重。将主观权重和客观权重整合为组合权重。然后,通过二元语言VIKOR方法,确定备选方案的折衷排序结果。最后,通过算例分析说明了所提方法的有效性和适用性。
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引用次数: 0
Multiple disseminating dynamics of human behavior in social network 社会网络中人类行为的多重传播动态
Pub Date : 2018-06-01 DOI: 10.1109/CCDC.2018.8407118
Jiakun Wang, Xinhua Wang, Hao Yu, Li Bai
Human behavior is often influenced by several external factors and there are some similarities between the information spreading and the human behavior dissemination. In this paper, we propose a novel susceptible- negative/positive-recovered-susceptible (SN/PRS) model to depict human behavior disseminating in social networks from microscopical view. Different from previous literature, the discrete SN/PRS model considers the neutralization reaction of multiple behavior, and the marginal diminishing effect. Then the influences of topology structure, degree and ratio of initial fixed infected nodes on system stability are investigated. Results display that the density of two kinds of spreaders have similar periodic oscillations, but various phase diagrams during the behavior disseminating process in different networks. Finally, the countermeasures to prevent the outbreak of negative behavior are proposed respectively.
人的行为往往受到多种外部因素的影响,信息传播与人的行为传播有一定的相似性。本文提出了一种新的易感-负/正-恢复易感(SN/PRS)模型,从微观角度描述人类行为在社会网络中的传播。与以往文献不同的是,离散SN/PRS模型考虑了多种行为的中和反应和边际递减效应。然后研究了拓扑结构、初始固定感染节点的程度和比例对系统稳定性的影响。结果表明,两种扩散器的密度具有相似的周期振荡,但在不同网络的行为传播过程中存在不同的相图。最后,分别提出了防范消极行为爆发的对策。
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引用次数: 0
Fuzzy logic control of the fault-tolerant PMSM servo system based on MRAS observer 基于MRAS观测器的永磁同步电机容错伺服系统模糊控制
Pub Date : 2018-06-01 DOI: 10.1109/CCDC.2018.8407421
Hong Zhao, Peng Luo, Ning Wang, Zhongjiu Zheng, Yiting Wang
In order to make the Permanent Magnet Synchronous Motor (PMSM) propulsion system operate normally when its position sensor failure occurs, the Model Reference Adaptive System (MRAS) observer estimation algorithm is put forward to estimate the rotor speed and the rotor angle thus enhancing the fault-tolerant capability of the whole propulsion system. However, under the PMSM servo control system which is based on SVPWM control strategy, the traditional PI controller has the disadvantages of weak robustness and poor anti-interference ability. Therefore, the Fuzzy Logic Control (FLC) is proposed to improve the control effect and enhance the robustness of the system. Finally, a simulation model based on the complete system combining the FLC and the MRAS observer is established in the Matlab/Simulink environment to testify the proposed strategy. Simulation results show that the proposed strategy can not only improve the dynamic performance and anti-interference ability of the PMSM control system greatly, but also estimate the rotor speed and angle effectively when the position sensor fails, thus the fault-tolerant capability of the whole propulsion system can be enhanced.
为了使永磁同步电机(PMSM)推进系统在位置传感器发生故障时能够正常运行,提出了模型参考自适应系统(MRAS)观测器估计算法,用于估计转子转速和转子角度,从而提高整个推进系统的容错能力。然而,在基于SVPWM控制策略的永磁同步电机伺服控制系统中,传统的PI控制器鲁棒性较弱,抗干扰能力较差。因此,提出了模糊逻辑控制(FLC)来改善控制效果,增强系统的鲁棒性。最后,在Matlab/Simulink环境下建立了FLC和MRAS观测器相结合的完整系统仿真模型,验证了所提出的策略。仿真结果表明,该策略不仅能极大地提高永磁同步电机控制系统的动态性能和抗干扰能力,而且在位置传感器故障时能有效地估计转子转速和角度,从而提高整个推进系统的容错能力。
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引用次数: 8
Truthful multi-unit double auctions with quantity discount 真实多单位双拍,数量折扣
Pub Date : 2018-06-01 DOI: 10.1109/CCDC.2018.8407171
Sheng Chen, Min Huang
For the market allocation efficiency of existing multi-unit double auction mechanism is low when the number of seller is small, which is not conducive to maximize the social welfare and utilities of buyers and sellers. In order to enable more agents to participate in the final allocation and improve social welfare, the multi-unit double auctions with quantity discount (MDAQD) is designed. The model is established by integer programming. The MDAQA mechanism is individual rational, budget balance, allocative effective and incentive compatibility. By designing the numerical examples and comparing the results without considering the quantity discounts, the allocation efficiency and social welfare of the new mechanism are significantly improved.
现有的多单元双拍卖机制在卖方数量较少的情况下,市场配置效率较低,不利于实现买卖双方的社会福利和效用最大化。为了使更多的代理参与最终分配,提高社会福利水平,设计了多单位数量折扣双拍卖(MDAQD)。采用整数规划方法建立模型。MDAQA机制具有个体理性、预算平衡、配置有效和激励相容的特点。通过设计算例并比较不考虑数量折扣的结果,新机制的配置效率和社会福利得到了显著提高。
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引用次数: 1
Maximum daily load forecasting based on support vector regression considering accumulated temperature effect 考虑积温效应的支持向量回归最大日负荷预测
Pub Date : 2018-06-01 DOI: 10.1109/CCDC.2018.8408035
Qirong Lin, Qiaoqiao Wang, Guilin Zhang, Yu Shi, Hongxia Liu, Lijun Deng
Maximum daily load forecasting is of great significance in power system dispatching. First, electric load characteristics are analysed in this paper. Second, maximum load and weather factors are selected as the input of the maximum incremental load forecasting regression model, and the mapping relationship between input and output is established by least squares support vector machine (LS-SVM). Then, the modified date type normalization of rest days is proposed according to load change regulation in summer. Moreover, the effect of accumulated temperature is considered to reduce the model prediction error. Finally, numerical tests demonstrated the efficiency of the proposed model.
最大日负荷预测在电力系统调度中具有重要意义。本文首先对电力负荷特性进行了分析。其次,选取最大负荷和天气因素作为最大增量负荷预测回归模型的输入,利用最小二乘支持向量机(LS-SVM)建立输入与输出之间的映射关系;然后,根据夏季负荷变化规律,提出了休息日的修正日期类型归一化。同时考虑了积温的影响,减小了模型的预测误差。最后,通过数值试验验证了该模型的有效性。
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引用次数: 2
Optimization of warehouse layout based on genetic algorithm and simulation technique 基于遗传算法和仿真技术的仓库布局优化
Pub Date : 2018-06-01 DOI: 10.1109/ccdc.2018.8407753
C. Pan, Shaozheng Yu, Xiaojing Du
In order to improve the layout planning in warehouse, mathematical model and simulation model are built on the basis of traditional system layout planning (SLP) method. Because of the low efficiency of simulation calculation, this paper proposes a two-stage optimization method based on genetic algorithm and simulation method. Finally, this paper proposes reasonable layout planning of warehouse in the case study. According to the results, the two-stage optimization method avoids the interference of human factors that exists in the traditional SLP method, and with the advantages of mathematical model and simulation model, it can get more integrated and more logical layout planning. The satisfactory solution which is got in a certain time guarantees the efficiency of calculation.
为了改进仓库布局规划,在传统系统布局规划(SLP)方法的基础上,建立了数学模型和仿真模型。针对仿真计算效率较低的问题,本文提出了一种基于遗传算法和仿真方法的两阶段优化方法。最后,通过案例分析,提出了合理的仓库布局规划。结果表明,两阶段优化方法避免了传统SLP方法中存在的人为因素的干扰,并结合数学模型和仿真模型的优势,可以得到更完整、更合乎逻辑的布局规划。在一定时间内得到满意的解,保证了计算的效率。
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引用次数: 3
Power grid security risk assessment based on fuzzy cluster and state homogeneity 基于模糊聚类和状态均匀性的电网安全风险评估
Pub Date : 2018-06-01 DOI: 10.1109/CCDC.2018.8408079
Xiaoxiao Qi, Wen-Lung Huang, Huaqiang Li, Yongjun Yu, Dagui Liu
The power grid security risk assessment is of great significance for preventing catastrophic failures. Due to the shortcomings of the existing security risk assessment methods in comparability and understandability of severity index, a security risk assessment method based on fuzzy cluster analysis is put forward. The method uses operational reliability theory, to build the grid failure model. based on the entropy theory, building system state entropy overcomes the shortage of traditional severity model which consider state homogeneity insufficiently. Refer to the comparability of index, using the fuzzy cluster method calculate global system severity index. Through analyzing the IEEE30 system simulation, it proves that the method can effectively identify N-1 and N-k contingency risks.
电网安全风险评估对于预防灾难性故障具有重要意义。针对现有安全风险评估方法在严重性指标可比性和可理解性方面存在的不足,提出了一种基于模糊聚类分析的安全风险评估方法。该方法运用运行可靠性理论,建立电网故障模型。基于熵理论构建系统状态熵,克服了传统严重性模型对状态同质性考虑不足的不足。参考指标的可比性,采用模糊聚类法计算全局系统严重性指标。通过对IEEE30系统仿真分析,证明该方法能够有效识别N-1和N-k个突发风险。
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引用次数: 3
An energy-efficient operation strategy for high-speed trains 高速列车的节能运行策略
Pub Date : 2018-06-01 DOI: 10.1109/CCDC.2018.8407778
Zhiyu He, Zhijie Yang, Jingyang Lv
This paper studies the optimal operation strategy to minimize the energy consumption of high-speed train running between adjacent stations. The characteristics of high-speed trains, including traction characteristic and regenerative braking, and the railway geographical conditions are fully considered in the dynamic model. Based on discretization analysis of the route, a novel optimal operating strategy consisting of a global optimization process and a further optimization process is developed to reduce the energy consumption. In the global optimization process, genetic algorithm is applied to search the optimal speed at each end of subsection in fixed time. Then, the optimization strategy is further studied to search the speed serial to improve the train operation process. To verify the effectiveness of the proposed operating strategy, the optimization strategy is simulated, and the operation performance of CRH-3 is tested. In comparison to regular train operation strategies, the proposed operation strategy is proved to obtain the favorable results for high-speed trains. And the simulating operation results meet the requirements of time, comfort and energy consumption.
本文研究了使相邻站间高速列车运行能耗最小的最优运行策略。在动力学模型中充分考虑了高速列车的牵引特性和再生制动特性以及铁路的地理条件。在对线路进行离散化分析的基础上,提出了一种由全局优化过程和进一步优化过程组成的新型优化运行策略,以降低能耗。在全局优化过程中,采用遗传算法在固定时间内搜索分段各末端的最优速度。然后,进一步研究了优化策略,搜索速度序列,以改善列车运行过程。为验证所提运行策略的有效性,对优化策略进行了仿真,并对CRH-3的运行性能进行了测试。通过与常规列车运行策略的比较,证明了所提出的运行策略在高速列车上取得了良好的效果。仿真运行结果满足时间、舒适性和能耗要求。
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引用次数: 1
期刊
2018 Chinese Control And Decision Conference (CCDC)
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