2019 5th International Conference on Electric Power Equipment - Switching Technology (ICEPE-ST)最新文献_第9页

An arc-less DC Vacuum Circuit Breaker Technology Based On Capacitor Absorbing Energy 基于电容吸收能量的无弧直流真空断路器技术

2019 5th International Conference on Electric Power Equipment - Switching Technology (ICEPE-ST) Pub Date : 2019-10-01 DOI: 10.1109/ICEPE-ST.2019.8928713

Kun Yang, Lei Gao, B. Xiang, Zhiyuan Liu, Yingsan Geng, Jianhua Wang

引用次数: 1

Three-Dimensional Modeling and Optimization Analysis of Internal Electric Field in 40.5 kV Switchgear 40.5 kV开关柜内部电场三维建模及优化分析

2019 5th International Conference on Electric Power Equipment - Switching Technology (ICEPE-ST) Pub Date : 2019-10-01 DOI: 10.1109/ICEPE-ST.2019.8928881

Yanzhe Zhang, S. Xiu, Rui Li, Tao Liu, Min Zhang, Quan Li

{"title":"Three-Dimensional Modeling and Optimization Analysis of Internal Electric Field in 40.5 kV Switchgear","authors":"Yanzhe Zhang, S. Xiu, Rui Li, Tao Liu, Min Zhang, Quan Li","doi":"10.1109/ICEPE-ST.2019.8928881","DOIUrl":"https://doi.org/10.1109/ICEPE-ST.2019.8928881","url":null,"abstract":"Metal enclosed switchgear has the advantages of easy maintenance and high reliability, and is widely used in medium voltage power system. Combined with the demand of power system and supply and distribution system, and the overall structure scheme of switchgear, in this paper, three-dimensional simulation model of internal electric field in switchgear was established by using Auto CAD and Maxwell 3D, and the electric field distribution inside the switchgear was simulated and analyzed. According to the results of electric field analysis, the corresponding optimization measures were designed for the parts with the most concentrated electric field distribution and weak insulation strength. By modifying the insulating sleeve model of the bus bar compartment, adjusting the thickness of the insulating sleeve in the circuit breaker compartment, the internal electric field distribution of the switchgear was optimized. On the basis of simulation analysis, lightning impulse tests, power frequency withstand tests, etc., of the sample switchgear were carried out according to the relevant standards. The results showed that the switchgear met the insulation requirements, the electric field optimization and the overall structure of the switchgear were reasonably arranged.","PeriodicalId":392306,"journal":{"name":"2019 5th International Conference on Electric Power Equipment - Switching Technology (ICEPE-ST)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115503389","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

Investigation on Fault Characteristics and Intelligent Diagnosis of a DC Superconducting Fault Current Limiter 直流超导故障限流器故障特征及智能诊断研究

2019 5th International Conference on Electric Power Equipment - Switching Technology (ICEPE-ST) Pub Date : 2019-10-01 DOI: 10.1109/ICEPE-ST.2019.8928740

Yaxiong Tan, Jiajun Pan, Chao Sheng, Leishi Xiao, Quan Zhou, Jian Li

{"title":"Investigation on Fault Characteristics and Intelligent Diagnosis of a DC Superconducting Fault Current Limiter","authors":"Yaxiong Tan, Jiajun Pan, Chao Sheng, Leishi Xiao, Quan Zhou, Jian Li","doi":"10.1109/ICEPE-ST.2019.8928740","DOIUrl":"https://doi.org/10.1109/ICEPE-ST.2019.8928740","url":null,"abstract":"The fault characteristics of superconducting fault current limiter (SFCL) are dynamic and nonlinear, which makes it difficult to recognize the failure state accurately. In this paper, the fault characteristics of a DCSFCL were investigated and an intelligent diagnostic method was proposed. We present mathematical formulations and a simulation model with COMSOL for transient analysis of DC power systems. The model consists of non-inductive superconducting coils, liquid nitrogen vessel. The value variation regularities of temperature, pressure and liquid level under different fault states were studied. In addition, kriging interpolation method was applied to solve convergence problem during thermal calculating. The correlations between characteristic parameters and operating status were analyzed. Framework for fault diagnosis of SFCL based on fault tree model was established and identification of the fault is carried out by comparison of obtained operating parameters with preset values. The results show that the fault type was determined by fault tree analysis. Moreover, the seriousness of fault is affected by the fault characteristic quantities, which provides an early warning of faults and benefit the condition-based maintenance.","PeriodicalId":392306,"journal":{"name":"2019 5th International Conference on Electric Power Equipment - Switching Technology (ICEPE-ST)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114950059","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

Innovation of Switching Technologies in Power Systems 电力系统中开关技术的创新

2019 5th International Conference on Electric Power Equipment - Switching Technology (ICEPE-ST) Pub Date : 2019-10-01 DOI: 10.1109/ICEPE-ST.2019.8928745

Hiroki Ito

{"title":"Innovation of Switching Technologies in Power Systems","authors":"Hiroki Ito","doi":"10.1109/ICEPE-ST.2019.8928745","DOIUrl":"https://doi.org/10.1109/ICEPE-ST.2019.8928745","url":null,"abstract":"Switching technologies applied to future power systems are facing with new requirements under changing network conditions. The roles of switching equipment used in AC and DC power systems may be also changing due to emerging factors such as massive installation of intermittent distributed renewable sources as well as energy storages. Rapid fault clearing HVDC circuit breakers are required to realize the future meshed HVDC grids. Despite of excellent arc interruption capability, since SF6 is a strong greenhouse gas with a high global warming potential (GWP) of about 23500, electric power industries continuously have enforced to reduce its release and leakage from t switching equipment. Considerable efforts have been focused to find an alternative solution with less environmental impact but there is still no practical and economic applications of SF6 free switching equipment applicable to EHV and UHV transmission systems, while increasing applications of vacuum interrupters up to 145 kV levels. In the paper, Technical trends and forecasts of AC and DC switching technologies applicable to future power systems will be presented.","PeriodicalId":392306,"journal":{"name":"2019 5th International Conference on Electric Power Equipment - Switching Technology (ICEPE-ST)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124874468","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: 1

Numerical Simulation of Residual Voltage Monitoring Device for 220kV Metal Oxide Arresters 220kV金属氧化物避雷器残余电压监测装置的数值模拟

2019 5th International Conference on Electric Power Equipment - Switching Technology (ICEPE-ST) Pub Date : 2019-10-01 DOI: 10.1109/ICEPE-ST.2019.8928815

Guanghui Yu, Yongxing Wang, Hao Zhu, Enyuan Dong, Hanbing Li, Guannan Liu, Renhan Liu

{"title":"Numerical Simulation of Residual Voltage Monitoring Device for 220kV Metal Oxide Arresters","authors":"Guanghui Yu, Yongxing Wang, Hao Zhu, Enyuan Dong, Hanbing Li, Guannan Liu, Renhan Liu","doi":"10.1109/ICEPE-ST.2019.8928815","DOIUrl":"https://doi.org/10.1109/ICEPE-ST.2019.8928815","url":null,"abstract":"In long-term operation, the metal oxide arrester is prone to malfunction due to improper maintenance. It reduces the protection capability to power system. In this paper, a new topology is proposed. It can effectively solve the existing problems of metal oxide arresters in transmission lines. The three-dimensional axisymmetric model of metal oxide arrester and its residual voltage monitoring device is established in the finite element software. The characteristics of metal oxide arrester are simulated and calculated. By adjusting the distance between ceramic capacitive core sensor and metal oxide arrester and its capacitance value, the electric field and potential distribution of metal oxide arrester are calculated. In normal operation, the whole topological structure is simulated and calculated. The results show that the topological structure of metal oxide arresters residual voltage monitoring device can effectively improve the electric field and potential distribution of metal oxide arresters. In normal operation, it can effectively reduce the loss of metal oxide arrester. The operational life of metal oxide arresters can be improved.","PeriodicalId":392306,"journal":{"name":"2019 5th International Conference on Electric Power Equipment - Switching Technology (ICEPE-ST)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127690340","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: 1

Numerical Analysis of Electrical Discharge in DC Switches Under External Circuit Parameter Variations 外部电路参数变化下直流开关放电的数值分析

2019 5th International Conference on Electric Power Equipment - Switching Technology (ICEPE-ST) Pub Date : 2019-10-01 DOI: 10.1109/ICEPE-ST.2019.8928878

K. Seo, M. Baek, I. Park

引用次数: 0

Vacuum Arc Characteristics of a Novel Contact Consists of Arcing Contact and Main Contact 一种新型触点的真空电弧特性包括电弧触点和主触点

2019 5th International Conference on Electric Power Equipment - Switching Technology (ICEPE-ST) Pub Date : 2019-10-01 DOI: 10.1109/ICEPE-ST.2019.8928874

Yuanzhao Li, Zihan Wang, Qiming Li, Yingsan Geng, Jianhua Wang, Zhiyuan Liu, Xiaomin Zhao, Yinghua Bi

{"title":"Vacuum Arc Characteristics of a Novel Contact Consists of Arcing Contact and Main Contact","authors":"Yuanzhao Li, Zihan Wang, Qiming Li, Yingsan Geng, Jianhua Wang, Zhiyuan Liu, Xiaomin Zhao, Yinghua Bi","doi":"10.1109/ICEPE-ST.2019.8928874","DOIUrl":"https://doi.org/10.1109/ICEPE-ST.2019.8928874","url":null,"abstract":"The objective of this paper is to propose a novel contact structure for 126 kV vacuum interrupters, and determine its arc characteristics. The contact consists of an inner arcing contact and an outer main contact. A 3/4 coil-type contact with contact diameter of 100 mm was used as the arcing contact. A butt type contact with diameter of 140 mm was used as the main contact. For this contact, nominal rated current flows through both the main contact and arcing contact. When breaking the fault current, the main contact first opens and current transfers to arcing contact. Then the arcing contact opens and vacuum arc burns and distinguishes between the arcing contact. Drawn arc experiments of the novel contact were carried out in an L-C discharging circuit. Experiment current was up to 30 kA rms. From the experimental results, the proposed contact can control vacuum arc effectively, and the erosion on outer main contact was slight. With the increasing of vertical distance between inner arcing contact and outer main contact, the arc expanded to outer main contact later. And in partial erosion case, the erosion on outer main contact was more severe than in normal case.","PeriodicalId":392306,"journal":{"name":"2019 5th International Conference on Electric Power Equipment - Switching Technology (ICEPE-ST)","volume":"180 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124492750","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

Influence of Arcing Contacts Erosion on Decomposition Products under Arc Discharge in SF6 Circuit Breaker SF6断路器电弧放电时电弧触头冲蚀对分解产物的影响

2019 5th International Conference on Electric Power Equipment - Switching Technology (ICEPE-ST) Pub Date : 2019-10-01 DOI: 10.1109/ICEPE-ST.2019.8928906

Ren-gang Yang, Mengyuan Xu, Jing Yan, Yingsan Geng

{"title":"Influence of Arcing Contacts Erosion on Decomposition Products under Arc Discharge in SF6 Circuit Breaker","authors":"Ren-gang Yang, Mengyuan Xu, Jing Yan, Yingsan Geng","doi":"10.1109/ICEPE-ST.2019.8928906","DOIUrl":"https://doi.org/10.1109/ICEPE-ST.2019.8928906","url":null,"abstract":"SF6 is widely used in circuit breakers for rated voltage of 40.5kV and above due to its excellent insulation and arc-quenching performance. Decomposed components analysis (DCA) method is considered one of the most promising methods for the condition monitoring and fault diagnosis of SF6 circuit breaker. The arcing contacts must be eroded by high temperature electric arc when the circuit breaker interrupts current, which has a significant influence on SF6 decomposition products. In this paper, the influence of arcing contacts erosion on SF6 decomposition products was studied. The experiments were carried out on a 40.5kV SF6 circuit breaker. The gas chromatograph and electrochemical sensor were used to analysis the decomposition products. It has been found that the concentration of decomposition products increases with the arc energy. The arcing contacts erosion has a significant effect on the concentration of SO2, SOF2, CO2 and CS2. Comparing with the state before contacts erosion, the concentration of SO2+SOF2 has decreased significantly. The concentration of CS2 has increased, and the concentration of CO2 has increased rapidly. The main reason for the change of decomposition products concentration before and after contacts erosion is discussed. The research results can provide the effective basis for the condition evaluation and fault diagnosis of SF6 circuit breakers.","PeriodicalId":392306,"journal":{"name":"2019 5th International Conference on Electric Power Equipment - Switching Technology (ICEPE-ST)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116868439","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

HVDC Fault Current Interruption Technology 高压直流故障断流技术

2019 5th International Conference on Electric Power Equipment - Switching Technology (ICEPE-ST) Pub Date : 2019-10-01 DOI: 10.1109/ICEPE-ST.2019.8928716

R. Smeets, N. Belda

引用次数: 6

Research on Voltage Sag Control Scheme Based on Fast Vacuum Switch 基于快速真空开关的电压暂降控制方案研究

2019 5th International Conference on Electric Power Equipment - Switching Technology (ICEPE-ST) Pub Date : 2019-10-01 DOI: 10.1109/ICEPE-ST.2019.8928694

Jianghua Yu, Zhu Liu, L. Zou, Zhihui Huang, Yongxing Wang

引用次数: 0