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2018 IEEE 2nd International Electrical and Energy Conference (CIEEC)最新文献

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Research on Constitution Scheme of Station Domain Protection System 站域保护系统构成方案研究
Pub Date : 2018-11-01 DOI: 10.1109/CIEEC.2018.8745775
Liqiang Sun, Xinming Jin, Haibin Chen, Jing Liu, C. Tan, Haiyun Yang, Binbin Zhang
Based on the traditional protection system, a constitution scheme of station domain protection system is proposed. The protection logic signal and the switch status signal output by the existing interval protection device are uploaded to the station domain host through the GOOSE network in accordance with the IEC61850 standard, and then the station domain host quickly and accurately identifies the internal fault according to the protection action signal of each protection device. Finally, issue the trip command to the intelligent terminal through the GOOSE network to clear the fault. The protection mode has good adaptability to the existing intelligent substation standards, and also meets the requirements of on-site operation and maintenance personnel. It can also complete the natural degeneration to the existing protection system under extreme conditions such as station host failure or communication system interruption.
在传统保护系统的基础上,提出了一种站域保护系统的构成方案。现有间隔保护装置输出的保护逻辑信号和开关状态信号按照IEC61850标准通过GOOSE网络上传到站域主机,然后站域主机根据各保护装置的保护动作信号快速准确地识别内部故障。最后通过GOOSE网络向智能终端发出trip命令,清除故障。该保护方式对现有的智能变电站标准具有良好的适应性,也能满足现场操作维护人员的要求。它还可以在站主机故障或通信系统中断等极端条件下完成对现有保护系统的自然退化。
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引用次数: 0
An Approach to Suppress Low-frequency Oscillation in Electrification Railway Based on TCSC Impedance Control 基于TCSC阻抗控制的电气化铁路低频振荡抑制方法
Pub Date : 2018-11-01 DOI: 10.1109/CIEEC.2018.8745835
Chao Yao, Xiaojun Wang, Chengjie Bi, Yizhi Zhang, Cheng Jin
Low-frequency oscillation (LFO) occurs in electrification railway system from time to time, which can lead to traction blockades in electric multiple unit (EMU) depots. When the impedance between the traction network and locomotives in the electrical coupling system does not match, the stability of the electrical coupling system will deteriorate and LFO will occur. There have been some suppression methods from the train side. However, the control strategy and parameters of the electric train is usually complicated and confidential, so these methods from the train side are generally complicated and not entirely practical. Nevertheless, based on impedance matching criterion, the paper proposes an approach to suppress LFO in the traction network of high-speed railway, utilizing Thyristor Controlled Series Compensation (TCSC) in the traction network side. And the effectiveness is verified with MATLAB/Simulink simulations.
电气化铁路系统中经常发生低频振荡,导致动车组车辆段发生牵引阻塞。当电耦合系统中牵引网络与机车之间的阻抗不匹配时,电耦合系统的稳定性会变差,产生LFO。从列车一侧有一些抑制方法。然而,电动列车的控制策略和参数通常是复杂和保密的,因此这些方法从列车方面来说通常是复杂的,并不完全实用。然而,基于阻抗匹配准则,本文提出了一种抑制高速铁路牵引网络LFO的方法,即在牵引网络侧利用晶闸管控制串联补偿(TCSC)。通过MATLAB/Simulink仿真验证了该方法的有效性。
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引用次数: 1
Research on the relationship between leakage current of on-site insulators and environmental factors 现场绝缘子泄漏电流与环境因素的关系研究
Pub Date : 2018-11-01 DOI: 10.1109/CIEEC.2018.8745724
Chao Gao, Yang Liu, Song Gao, Bin Cao, Daiming Yang, Liming Wang
The pollution flashover of insulators is the most serious accidents to the safe operation of power grid. Leakage current, as one of parameters for evaluating the pollution degree of insulators, which could be continuous online monitored, have a certain correspondence with some typical discharge phenomena. The on-line monitoring devices of the leakage currents have been installed in many places in Jiangsu Power Grid and a lot of leakage current data have been accumulated, which could be used to effectively evaluate the pollution degree of insulators. In this paper, based on the monitoring data of the leakage current of the actual operating line, the factors affecting the leakage current of the insulator surface, such as seasons, festivals, contamination, rainfalls and temperature difference are analyzed, which might provide references for the pollution warning system.
绝缘子污闪是影响电网安全运行的最严重事故。漏电电流作为评价绝缘子污染程度的参数之一,与一些典型放电现象具有一定的对应关系,可以进行连续在线监测。江苏电网多处安装了漏电电流在线监测装置,积累了大量的漏电电流数据,可用于有效评价绝缘子污染程度。本文根据实际运行线路的漏电电流监测数据,分析了季节、节日、污染、降雨、温差等因素对绝缘子表面漏电电流的影响,为污染预警系统提供参考。
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引用次数: 1
Research on Active Noise Control Method Compensating for Acoustic Metamaterial Noise Barrier in Transformer Noise Reduction 变压器降噪中声学超材料屏障补偿的主动噪声控制方法研究
Pub Date : 2018-11-01 DOI: 10.1109/CIEEC.2018.8745747
Tianzheng Wang, Tao Jin, Zhumao Lu, Chao Zhang, Guoqiang Liu, Xinzhe Zhao, Cailian Li
Noise barrier with acoustic metamaterial has application prospect in power transformer noise reduction due to its low frequency noise reduction advantages. The acoustic diffraction along the edges of the noise barrier decreases the overall noise reduction obviously. An active noise control (ANC) method combined with noise barrier is proposed to counteract the diffracting sound waves near the edges of the noise barrier. The noise barrier is composed of the Hilbert fractal acoustic metamaterial (HFAMM) units with good sound insulation characteristics at low frequencies. The transmission loss (TL) of the HFAMM unit is higher than 20dB at the main frequencies of the transformer noise theoretically. The experiment system including the acoustic metamaterial noise barrier and the ANC system is established. The sound pressure level with ANC on the specified points in the target area is more than 10dB lower than that without ANC in the experiment. The results prove that the new method is effective for improving noise reduction performance of the noise barriers.
声学超材料隔音屏障具有低频降噪的优点,在电力变压器降噪中具有应用前景。沿声屏障边缘的声衍射明显降低了整体降噪效果。提出了一种结合声屏障的主动噪声控制方法,以抵消声屏障边缘附近的衍射声波。噪声屏障由Hilbert分形声学超材料(HFAMM)单元组成,具有良好的低频隔声特性。理论上,在变压器噪声主频下,HFAMM单元的传输损耗大于20dB。建立了包括声学超材料声屏障和ANC系统在内的实验系统。在实验中,在目标区域的指定点上,有ANC的声压级比没有ANC的声压级低10dB以上。结果表明,该方法能有效地提高隔声屏障的降噪性能。
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引用次数: 3
A Wind Speed Simulation Approach Based on Markov Sequence Model and Archimedean Copula 基于马尔可夫序列模型和阿基米德Copula的风速模拟方法
Pub Date : 2018-11-01 DOI: 10.1109/CIEEC.2018.8745949
Yudun Li, Binchao Zhao, Hao Bai
Simulating wind speed has important implications in wind energy research. This paper provides a wind speed simulation approach based on Markov sequence model and Archimedean Copula for planning purposes. Firstly, a Markov Sequence model is presented to describe the transfer rule of wind speed time series (WSTS). Secondly, an Archimedean Copula function (AMC) is applied to capture the temporal dependence between wind speeds of adjacent times and then obtain the transition kernel. Finally, conditional sampling technique is used to generate the wind speed of next hour. The advantage of the model lies in avoiding the loss of information of wind speed data during the discretization procedure by replacing the discrete transition matrix with the transition kernel and characterizing different dependence structure with Archimedean Copula function. A case study proves that the model can offer satisfactory fit for both probability distribution and temporal dependence. The model is applied to a reliability test system. The results show that the model can be used to evaluate the reliability of power systems with wind energy.
风速模拟在风能研究中具有重要意义。本文提出了一种基于马尔可夫序列模型和阿基米德Copula的风速模拟方法。首先,提出了一个马尔可夫序列模型来描述风速时间序列的传递规律。其次,利用阿基米德Copula函数(AMC)捕捉相邻时间风速之间的时间相关性,得到过渡核;最后,采用条件采样技术生成下一小时的风速。该模型的优点在于用过渡核代替离散过渡矩阵,用阿基米德Copula函数表征不同的依赖结构,避免了风速数据在离散化过程中信息的丢失。实例研究表明,该模型对概率分布和时间依赖性都有较好的拟合效果。将该模型应用于某可靠性测试系统。结果表明,该模型可用于风电系统的可靠性评估。
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引用次数: 0
Comparison of the Influence of Different Types of Faults on Four-Circuit Transmission Lines on the Same Tower 同一塔上四回路输电线路不同类型故障影响的比较
Pub Date : 2018-11-01 DOI: 10.1109/CIEEC.2018.8745923
Yujiao Sun, Liang Cheng, Jun-hui Huang, Qun Zhang, Yichao Huang, Yuanming Huang
The risk of failures on multi-circuit transmission lines on the same tower becomes higher and the fault types are more complex. Sometimes maybe we need to analyze the influence of faults between different lines and the phase-to-phase faults on one line in such a system especially when the voltage grades are high and the transferred power is big. Knowing the severity of the different fault types in advance can help us to better analyze such systems and save simulation time. However, by now the related researches are rare. This paper derived the equations of the transferred power by four-circuit transmission lines on the same tower during different faults in a simple system based on the symmetrical component method, Equal Area Criterion and some assumptions. According to the equations the paper compared the severity of the different types of faults and get some conclusions. A simple test case is used to testify the correctness of the equations and the conclusions.
同一塔上多回路输电线路发生故障的风险越来越高,故障类型也越来越复杂。在这样一个系统中,特别是在电压等级高、传输功率大的情况下,有时可能需要分析线路间故障的影响,以及线路间的相故障。提前了解不同故障类型的严重程度,可以帮助我们更好地分析这类系统,节省仿真时间。然而,目前相关的研究还不多见。本文基于对称分量法、等面积准则和一些假设,推导了一个简单系统在不同故障情况下,同一塔上四回路输电线路的传输功率方程。根据这些方程,对不同类型断层的严重程度进行了比较,得出了一些结论。通过一个简单的算例验证了公式和结论的正确性。
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引用次数: 1
The capacitor voltage balancing control strategy based on hierarchical theory in Cascaded H-bridge SSSC 级联h桥SSSC中基于层次理论的电容电压平衡控制策略
Pub Date : 2018-11-01 DOI: 10.1109/CIEEC.2018.8745725
Xuan Wang, Dan Wu, Menghang Wei, Jiafei Li, Hailong Wang, Qingguang Li
Static Synchronous Series Compensator (SSSC) has great significance for improving the stability of the power grid and enhancing the transmission capability. Recently its usage has been more practical and economical by using multilevel and especially cascaded H-Bridge topologies. The modulation and control strategy based on SSSC based on cascaded H-bridge is represented in this paper firstly. However, the biggest problem of cascaded H-bridge is unbalanced capacitor voltage. Thus, an integrated capacitor voltage balancing control strategy is discussed in order to maintain capacitor voltage balance and stability. The simulation results for the capacitor voltage balance control strategy proposed in this paper verified that the ability of this method to balance the DC bus voltages.
静态同步串联补偿器(SSSC)对于改善电网的稳定性和提高输电能力具有重要意义。近年来,通过采用多电平,特别是级联的h桥拓扑,使其应用更加实用和经济。本文首先介绍了基于级联h桥的SSSC调制控制策略。然而,级联h桥最大的问题是电容器电压不平衡。为此,本文讨论了一种集成电容器电压平衡控制策略,以保持电容器电压的平衡和稳定。本文提出的电容电压平衡控制策略的仿真结果验证了该方法对直流母线电压平衡的能力。
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引用次数: 1
Minimum reflux power control of bidirectional DC-DC converter based on dual phase shifting 基于双移相的双向DC-DC变换器最小回流功率控制
Pub Date : 2018-11-01 DOI: 10.1109/CIEEC.2018.8745832
Shengwei Gao, Xin Lu, Xiaoming Liu
For dual active-bridge full-bridge DC-DC converter, the traditional single-phase-shifting control is simple, but there is a backflow power, and only when the input voltage and output voltage match, the converter has higher efficiency. Therefore, in order to reduce the current stress and the reflux power, and improve the conversion efficiency, a dual phase-shifting control strategy with the minimum reflux power control satisfying the soft-switching condition is proposed. In this paper, the working mode, power characteristics and soft switching range of the dual phase-shifting control are analyzed firstly, and the best phase-shifting combination for realizing the minimum return power in the soft switching range is selected. Finally, the system model is established with the help of the simulation tool of MATLAB, which verifies the effectiveness and superiority of the control strategy.
对于双有源桥式全桥DC-DC变换器,传统的单相移相控制简单,但存在回流功率,只有当输入电压和输出电压匹配时,变换器才具有更高的效率。因此,为了减小电流应力和回流功率,提高转换效率,提出了满足软开关条件的回流功率控制最小的双移相控制策略。本文首先分析了双移相控制的工作方式、功率特性和软开关范围,选择了实现软开关范围内返回功率最小的最佳移相组合。最后,借助MATLAB仿真工具建立了系统模型,验证了控制策略的有效性和优越性。
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引用次数: 2
Prediction method of leakage current of insulators on the transmission line based on BP neural network 基于BP神经网络的输电线路绝缘子泄漏电流预测方法
Pub Date : 2018-11-01 DOI: 10.1109/CIEEC.2018.8745839
Song Gao, Yong-yong Jia, Xiaotian Bi, Bin Cao, Xu Li, Daiming Yang, Liming Wang
Pollution flashover is a serious threat to the safe and stable operation of power system, and the pollution flashover voltages of insulators on the transmission lines are related to the leakage currents. In this paper, a neural network model was proposed to predict the leakage currents on the insulators, which could provide references for preventing pollution flashover. By the analysis of a large number of leakage current data obtained by the monitoring device on the insulators of operating lines, the characteristics of the leakage current is extracted, and then combined with BP neural network, the prediction model of leakage current based on the actual operation data is established. By adjusting the parameters of the BP neural network, the prediction results can be accords with the actual operation situation. The reliability of the predicted results was verified by the leakage current on the insulator surface.
污染闪络严重威胁着电力系统的安全稳定运行,输电线路绝缘子的污染闪络电压与泄漏电流有关。本文提出了一种预测绝缘子泄漏电流的神经网络模型,为防止污染闪络提供参考。通过对运行线路绝缘子监测装置获取的大量漏电电流数据进行分析,提取漏电电流的特征,然后结合BP神经网络,建立基于实际运行数据的漏电电流预测模型。通过调整BP神经网络的参数,使预测结果更符合实际运行情况。通过对绝缘子表面泄漏电流的分析,验证了预测结果的可靠性。
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引用次数: 5
Architecture and Function Design of Integrated Energy Management System for Multiple Scenes 多场景综合能源管理系统体系结构与功能设计
Pub Date : 2018-11-01 DOI: 10.1109/CIEEC.2018.8745969
Hao Zheng, Hongwei Ma, Di Wu, Jianrong Mao, Meiping Fu
The integrated energy management and control system is an important means to achieve "multiple complementarity, coordination and optimization" among different energy systems. The core purpose of the integrated energy management and control system is to improve efficiency and reduce consumption of energy by promoting the fusion of energy flow and information flow. First of all, this paper introduced the research progress of integrated energy management and control system at home and abroad. Secondly, defined the position of Multi-application scenario according to the different different customer demands. Then, described the design concept and functional architecture of the integrated energy management and control system. Finally, in this paper, the preliminary results of the system is showed.
能源综合管控系统是实现不同能源系统之间“多元互补、协调优化”的重要手段。综合能源管控系统的核心目的是通过促进能量流和信息流的融合来提高效率,降低能源消耗。本文首先介绍了国内外综合能源管理与控制系统的研究进展。其次,根据不同的客户需求,定义多应用场景的定位。然后,阐述了综合能源管理与控制系统的设计理念和功能体系结构。最后,本文给出了系统的初步结果。
{"title":"Architecture and Function Design of Integrated Energy Management System for Multiple Scenes","authors":"Hao Zheng, Hongwei Ma, Di Wu, Jianrong Mao, Meiping Fu","doi":"10.1109/CIEEC.2018.8745969","DOIUrl":"https://doi.org/10.1109/CIEEC.2018.8745969","url":null,"abstract":"The integrated energy management and control system is an important means to achieve \"multiple complementarity, coordination and optimization\" among different energy systems. The core purpose of the integrated energy management and control system is to improve efficiency and reduce consumption of energy by promoting the fusion of energy flow and information flow. First of all, this paper introduced the research progress of integrated energy management and control system at home and abroad. Secondly, defined the position of Multi-application scenario according to the different different customer demands. Then, described the design concept and functional architecture of the integrated energy management and control system. Finally, in this paper, the preliminary results of the system is showed.","PeriodicalId":329285,"journal":{"name":"2018 IEEE 2nd International Electrical and Energy Conference (CIEEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129529954","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
2018 IEEE 2nd International Electrical and Energy Conference (CIEEC)
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