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2022 5th International Conference on Energy, Electrical and Power Engineering (CEEPE)最新文献

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Time-Sequential Simulation Method Considering Renewable Output Fluctuation and Dynamic Line Rating 考虑可再生出力波动和动态线路额定值的时序仿真方法
Pub Date : 2022-04-22 DOI: 10.1109/CEEPE55110.2022.9783271
Xiaolei Cheng, W. Cai, Yuan Wang, Peng Wang, Jingli Zhang, Shuran Liu
The increasing penetration rate of intermittent renewable energies imposes the great randomness to power grid planning and operation, which requires time-sequential planning methods to consider the time-series behavior of wind output, as well as network flexibility methods to increase the resilience of rich-renewable network. Traditional static line rating method neglect the high correlation effect between dynamic rating of overhead lines and wind power output. This paper introduces a time-sequential simulation method that considering renewable output fluctuation and line dynamic line rating to assist in determining the power system planning scheme. The methodology is applied on a IEEE RTS-96 24-bus network to evaluate the impact of dynamic line rating for integrating wind power generation. The case study results indicate a significant improvement in wind power penetration with the installation of dynamic line rating.
间歇性可再生能源渗透率的不断提高给电网规划和运行带来了很大的随机性,这就需要时序规划方法考虑风电输出的时间序列行为,也需要网络柔性方法来增加富可再生能源网络的弹性。传统的静态线路额定值方法忽略了架空线路动态额定值与风电出力之间的高度相关效应。本文介绍了一种考虑可再生能源出力波动和线路动态额定值的时序仿真方法,以辅助确定电力系统规划方案。将该方法应用于IEEE RTS-96 24总线网络,以评估动态线路额定值对集成风力发电的影响。实例分析结果表明,安装动态线路额定值后,风电穿透能力有了显著提高。
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引用次数: 0
Economic Analysis of the Application of Ice Storage Air Conditioning System in Chongqing 冰蓄冷空调系统在重庆市应用的经济分析
Pub Date : 2022-04-22 DOI: 10.1109/CEEPE55110.2022.9783237
Gaofeng Yang, Sixu Liu, Jie Mu, Yi Wang
Based on the energy storage system, users can adjust the electricity load and participate in demand response while meeting their own energy demand. With the gradual advancement of power system reform, the potential benefits of ice storage technology application are increasing. Traditional methods for analyzing the economics of ice storage air conditioning systems tend to calculate and analyze the economic evaluation index of the system with fixed construction and operation strategies. Under the changing market environment and air conditioning load, it is difficult to accurately reflect the application value of ice storage technology. Therefore, this paper investigates a new economic analysis method that takes into account the collaborative optimization of the operation and planning of ice storage and cooling air conditioning systems. The method proposed in this paper takes the maximization of economic efficiency as the optimization objective and constructs constraints on the system operation strategy and investment plan. Finally, we build a mixed integer linear programming model which can be efficiently solved by a commercial solver. The numerical analysis takes Chongqing region as an example and analyzes the economic value of investing in an ice storage cooling air conditioning system under the local electricity price policy and air conditioning load characteristics.
基于储能系统,用户可以在满足自身能源需求的同时,调节用电负荷,参与需求响应。随着电力体制改革的逐步推进,冰蓄冷技术应用的潜在效益越来越大。传统的冰蓄冷空调系统经济性分析方法倾向于计算和分析具有固定建设和运行策略的系统的经济性评价指标。在不断变化的市场环境和空调负荷下,冰蓄冷技术的应用价值难以准确体现。因此,本文研究了一种考虑冰蓄冷空调系统运行与规划协同优化的经济分析新方法。本文提出的方法以经济效益最大化为优化目标,对系统运行策略和投资计划进行约束。最后,我们建立了一个混合整数线性规划模型,该模型可以被商业求解器有效地求解。数值分析以重庆地区为例,分析了在当地电价政策和空调负荷特点下,投资建冰蓄冷空调系统的经济价值。
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引用次数: 0
Static Volatge Stability Evaluation on the Urban Power System by Continuation Power Flow 基于连续潮流的城市电力系统静态电压稳定性评价
Pub Date : 2022-04-22 DOI: 10.1109/CEEPE55110.2022.9783364
Yuanyuan Lou, Zhongxi Ou, Zhu Tong, Wenjing Tang, Zhencong Li, Kun Yang
Modern urban power systems have developed rapidly, and their characteristics such as high cable rate as well as the uneven distribution of loads and generators have an impact on the static voltage stability of the systems. Continuation power flow method, which is commonly used in voltage stability analysis, can construct the P-V curve and calculate the maximum loadability as well as the loading margin of the grid. Thus, this paper applies continuation power flow method to evaluate the static voltage stability of power systems with different characteristics. Also, the parameters of the test systems are obtained by modifying the IEEE 39-bus system referring to the characteristics of an actual grid in a coastal city of southern China. MATPOWER is used for analysis, and the simulation results are presented and discussed. Also, the influence of different characteristics on the voltage stability is summarized.
现代城市电力系统发展迅速,其电缆率高、负荷和发电机分布不均匀等特点影响了系统的静态电压稳定性。连续潮流法是电压稳定分析中常用的一种方法,它可以构造P-V曲线,计算出电网的最大可负荷性和负荷余量。因此,本文采用连续潮流法对具有不同特性的电力系统进行静态电压稳定性评价。同时,根据华南某沿海城市实际电网的特点,对ieee39总线系统进行了修改,得到了测试系统的参数。利用MATPOWER软件进行分析,给出仿真结果并进行讨论。总结了不同特性对电压稳定性的影响。
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引用次数: 2
Research on Arc Test in Oil Chamber of Vacuum On-load Tap-changer for Converter Transformer 换流变压器真空有载分接开关油室电弧试验研究
Pub Date : 2022-04-22 DOI: 10.1109/CEEPE55110.2022.9783346
Z. Pan, J. Deng, Xiang Peng, Ying Wu, Jinyin Zhang, Haibin Zhou
In this paper, according to the fault of oil chamber rupture caused by electrical fault of vacuum on-load tap-changer of converter transformer, in order to verify the mechanical strength of the oil chamber, arc test of the oil chamber was carried out. The test results prove that the mechanical strength of the new structure of oil chamber meets the engineering requirements under the specified arc energy requirement, and the operating characteristics of the non-electrical protection device are obtained.
本文针对换流变压器真空有载分接开关电气故障导致油室破裂的故障,为验证油室的机械强度,对油室进行了电弧试验。试验结果证明,在规定的电弧能量要求下,新结构油腔的机械强度满足工程要求,并获得了非电保护装置的工作特性。
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引用次数: 0
Development and Experimental Research of Impedance Converter for VFTO Measurement VFTO测量阻抗变换器的研制与实验研究
Pub Date : 2022-04-22 DOI: 10.1109/CEEPE55110.2022.9783254
Zihan Teng, Weijiang Chen, Jun Zhao, Jiangong Zhang, Qi Wang, Haonan Lu
Very fast transient overvoltage (VFTO) is a special electromagnetic transient in gas-insulated switchgear (GIS). It is necessary to obtain the characteristics of VFTO to guide the insulation design of GIS and the electromagnetic protection of secondary equipment. In this work, we have designed and developed a differential impedance converter by using the compensation between poles and zeros in closed loop circuit and compared its measurement performance with a following type on a 220 kV test platform. The calibration and practical tests results showed that the low cut-off frequency of differential type has been greatly expanded, which can reach 0.1mHz, and the measurement accuracy of very fast transient signal has also been greatly improved than the following type. Thus, the differential impedance converter can fully meet the measurement needs of high-frequency transient voltage, power frequency voltage, and trapped charge voltage in the VFTO waveform. It can be recommended for VFTO test measurement in extra-high voltage (EHV)and ultra-high voltage (UHV) GIS substations and provide accurate data support for insulation design and energy saving of GIS equipment.
快速暂态过电压是气体绝缘开关设备中的一种特殊的电磁暂态。了解VFTO的特性对指导GIS的绝缘设计和二次设备的电磁保护是十分必要的。本文设计并开发了一种利用闭环中极零补偿的差分阻抗变换器,并在220kv测试平台上与以下类型的变换器进行了测量性能比较。标定和实际测试结果表明,差分型的低截止频率得到了很大的扩展,可以达到0.1mHz,对极快瞬态信号的测量精度也比差分型有了很大的提高。因此,差分阻抗变换器完全可以满足VFTO波形中高频瞬态电压、工频电压和俘获电荷电压的测量需求。可推荐用于特高压(EHV)和特高压(UHV) GIS变电站的VFTO测试测量,为GIS设备的绝缘设计和节能提供准确的数据支持。
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引用次数: 0
A Location Method for Arc Fault Based on Electromagnetic Radiation Signals and TDOA 基于电磁辐射信号和TDOA的电弧故障定位方法
Pub Date : 2022-04-22 DOI: 10.1109/CEEPE55110.2022.9783382
Siyu Wei, Qing Yang, Yue Qi, Tong Zhou, Wei-Ji Liao, Jian Sun
The accurate location of arcing faults is of great significance to ensure the stable operation of the power system. Normally, arc discharge will radiate outward high-frequency electromagnetic signals. In this paper, an arcing fault location method based on Electromagnetic Radiation (EMR) signals and Time Difference of Arrival (TDOA) is proposed. A mathematical model of the arc fault location based on TDOA is established. The energy accumulation method is used to capture the time difference of EMR signals reaching different sensors, and the Chan algorithm is used to calculate the nonlinear equations to obtain the estimated coordinate of the arcing fault. The results of the arcing fault location experiment show that the time difference error of EMR signals is less than 0.2ns. The location error is about 11cm, which verifies the effectiveness of the proposed location method for arc fault.
电弧故障的准确定位对保证电力系统的稳定运行具有重要意义。正常情况下,电弧放电会向外辐射高频电磁信号。提出了一种基于电磁辐射(EMR)信号和到达时间差(TDOA)的电弧故障定位方法。建立了基于TDOA的电弧故障定位数学模型。采用能量累积法捕获到达不同传感器的EMR信号的时间差,采用Chan算法计算非线性方程,得到电弧故障的估计坐标。电弧故障定位实验结果表明,EMR信号的时差误差小于0.2ns。定位误差约为11cm,验证了电弧故障定位方法的有效性。
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引用次数: 2
Study on Bird Dropping Flashover Prevention Characteristics of AC Line in Areas Above 4000 m 4000m以上地区交流线路防鸟落闪特性研究
Pub Date : 2022-04-22 DOI: 10.1109/CEEPE55110.2022.9783253
Yujian Ding, Jun Zhou, Xiuyuan Yao, Liang Tian, Shengfu Wang, Yu Su
Mastering the bird dropping flashover characteristics of AC transmission line tower clearance in areas above 4,000 m and taking reasonable measures to prevent bird dropping fault are the key to ensure the safe and stable operation of transmission lines in high-altitude areas. For V and I insulator strings of 500 kV line and I insulator strings of 330 kV line commonly used in high-altitude areas, the bird dropping flashover discharge test was carried out under rated operating voltage and highest operating voltage respectively, and flashover probability at different falling positions of bird droppings was obtained. The easy flashover scope of bird droppings on both sides of 3.5 m and 3.0 m of V and I insulator strings of 500 kV line and 2.0 m of I insulator strings of 330 kV line is determined. According to the structural characteristics of tangent towers and tension towers on AC line, the layout scope and measures of bird thorn and thorn plate are put forward. The research results can provide a basis for the bird dropping flashover prevention fault of AC transmission lines in areas above 4,000 m.
掌握4000m以上地区交流输电线路塔间隙落鸟闪络特性,采取合理措施防止落鸟故障,是保证高海拔地区输电线路安全稳定运行的关键。针对高海拔地区常用的500 kV线路的V、I绝缘子串和330 kV线路的I绝缘子串,分别在额定工作电压和最高工作电压下进行鸟粪落闪放电试验,得到鸟粪落在不同位置的闪络概率。确定了500 kV线路V、I绝缘子串3.5 m、3.0 m两侧和330 kV线路I绝缘子串2.0 m两侧鸟粪易闪络范围。根据交流线路切塔和张力塔的结构特点,提出了鸟刺和刺板的布置范围和措施。研究结果可为4000m以上地区交流输电线路的防鸟落闪故障提供依据。
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引用次数: 0
Review of Low Temperature Reliability of Lithium-ion Battery 锂离子电池低温可靠性研究进展
Pub Date : 2022-04-22 DOI: 10.1109/CEEPE55110.2022.9783245
Y. Ren, Chuanjin Deng, Chien-Wei Ma, Zhizhe Wang, Liu Yang
With the continuous development of new energy industry, the demand for lithium-ion batteries is rising day by day. Low temperature environment is an important factor restricting the use of lithium-ion batteries. In order to meet the needs of lithium-ion battery in extreme climate environment, the research on low-temperature reliability of lithium-ion battery has become an important topic. In this paper, the low-temperature behavior of lithium-ion battery and the mechanism of low-temperature performance degradation of lithium-ion battery are analyzed. The research results of low-temperature reliability of lithium-ion battery are summarized. The research on low temperature reliability of battery is of great significance to promote the application of lithium-ion battery.
随着新能源产业的不断发展,对锂离子电池的需求日益上升。低温环境是制约锂离子电池使用的重要因素。为了满足锂离子电池在极端气候环境下的使用需求,锂离子电池低温可靠性的研究成为一个重要课题。本文分析了锂离子电池的低温行为以及锂离子电池低温性能退化的机理。综述了锂离子电池低温可靠性的研究成果。电池低温可靠性的研究对促进锂离子电池的应用具有重要意义。
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引用次数: 0
Fault Diagnosis Method of Stator Windings Short Circuit for Variable Speed Pumped Storage Unit Based on Park Transform 基于Park变换的变速抽水蓄能机组定子绕组短路故障诊断方法
Pub Date : 2022-04-22 DOI: 10.1109/CEEPE55110.2022.9783305
Wei Li, Jian Qiao, Yikai Wang, Ren Liu, Tao Lv, Xianggen Yin
Variable speed pumped storage unit is an important part of the new power system with renewable energy generation as the main body. In this paper, a fault diagnosis method of stator windings short circuit for variable speed pumped storage unit based on Park transform. During the normal operation of the variable speed pumped storage unit, the vector trajectory of the stator side current Park transform result is approximately a standard circle. When a fault occurs, the vector trajectory will become an ellipse. On this basis, the stator winding short-circuit fault is judged according to the variation degree of vector trajectory. Finally, taking a practical variable speed pumped storage unit as an example, the simulation verifies the effectiveness of the proposed method, which can sensitively reflect the small turn difference inter-turn short circuit fault with weak fault characteristics.
变速抽水蓄能机组是以可再生能源发电为主体的新型电力系统的重要组成部分。提出了一种基于Park变换的变速抽水蓄能机组定子绕组短路故障诊断方法。在变频抽水蓄能机组正常运行时,定子侧电流Park变换结果的矢量轨迹近似为一个标准圆。当故障发生时,矢量轨迹将变成一个椭圆。在此基础上,根据矢量轨迹变化程度判断定子绕组短路故障。最后,以实际变速抽水蓄能机组为例,通过仿真验证了所提方法的有效性,该方法能灵敏地反映小匝差间短路故障,且故障特征较弱。
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引用次数: 1
Research and Characteristic Analysis of Flexible Load Regulation Model Applied to Fault Reconfiguration of Active Distribution Network 应用于有功配电网故障重构的柔性负荷调节模型研究及特性分析
Pub Date : 2022-04-22 DOI: 10.1109/CEEPE55110.2022.9783285
Yujiao Liu, Guoliang Li, Y. Li
The access of Distributed Generation (DG) brings challenges to the stable operation of Active Distribution Network (ADN), and ADN fault reconfiguration is an important means to improve system stability. Firstly, this paper analyzed the mathematical model of flexible load, and then took the minimum loss of system network as the objective function, and constructed the network reconstruction model with power flow equality constraints, node voltage constraints, branch capacity constraints and flexible load regulation range as the constraints. Aiming at the problem of distribution network fault reconstruction, an improved particle swarm optimization algorithm was proposed, which was applied to ADN fault reconstruction. Through simulation comparison, it was verified that the improved particle swarm optimization algorithm has faster convergence speed and the ability of local optimal solution was proposed. Through the example analysis of the improved IEEE33 node distribution system, the advantages of the improved particle swarm optimization algorithm in distribution network reconfiguration were verified. The results showed that the method has fast convergence speed, short optimization time and stable operation.
分布式发电(DG)的接入给主动配电网(ADN)的稳定运行带来了挑战,而ADN故障重构是提高系统稳定性的重要手段。本文首先分析了柔性负荷的数学模型,然后以系统网络损耗最小为目标函数,构建了以潮流相等约束、节点电压约束、支路容量约束和柔性负荷调节范围约束为约束的电网重构模型。针对配电网故障重构问题,提出了一种改进的粒子群优化算法,并将其应用于ADN故障重构。通过仿真比较,验证了改进的粒子群算法具有更快的收敛速度,并提出了局部最优解的能力。通过对改进后的IEEE33节点配电系统的算例分析,验证了改进粒子群优化算法在配电网重构中的优势。结果表明,该方法收敛速度快,优化时间短,运行稳定。
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引用次数: 0
期刊
2022 5th International Conference on Energy, Electrical and Power Engineering (CEEPE)
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