2020 5th Asia Conference on Power and Electrical Engineering (ACPEE)最新文献_第3页

Sawtooth Carrier Based Sixty-Degree PWM for Three-phase Quasi Z-source T-Type Inverter for Induction Motor Drive 基于锯齿载波的60度PWM三相准z源t型异步电机逆变器

2020 5th Asia Conference on Power and Electrical Engineering (ACPEE) Pub Date : 2020-06-01 DOI: 10.1109/ACPEE48638.2020.9136504

Thin Zar, T. Naing

{"title":"Sawtooth Carrier Based Sixty-Degree PWM for Three-phase Quasi Z-source T-Type Inverter for Induction Motor Drive","authors":"Thin Zar, T. Naing","doi":"10.1109/ACPEE48638.2020.9136504","DOIUrl":"https://doi.org/10.1109/ACPEE48638.2020.9136504","url":null,"abstract":"In DC to AC power conversion, impedance network connected to the inverter input DC side causes buck-boost features of the inverter output voltage and prevents damage the semiconductor devices during shoot-through conditions. Blocking voltage of the main switching devices of T-type inverter is lower than traditional voltage source inverter. Moreover, upper and lower DC link voltage are no longer balance because the values and characteristics of components used in impedance network cannot be equal. In this paper, a simple boost sixty-degree PWM (SB SDPWM) based on sawtooth carrier wave is applied to three phase quasi-Z-source T-type inverter for the purpose of AC motor drive applications. This technique provides to adjust the upper and lower input DC-link voltages of the inverter by controlling the upper and lower shoot-through duty ratios. This feature cannot be achieved in fully shoot-through technique. Small scale laboratory prototype is built and tested to certify the proposed SBSD PWM and also compared with traditional simple boost sine PWM (SB SPWM) technique. STM32F4 Discovery board is used as a main controller and implemented in Matlab/Simulink with Waijung Bolcksets. According to the experimental test results, SB SDPWM control method gives lower current harmonic distortion (THDi) but harmonic spectrum of voltage is slightly higher than SB SPWM. Moreover, SB SDPWM method achieves higher inverter output voltage and efficiency than SPWM method.","PeriodicalId":223198,"journal":{"name":"2020 5th Asia Conference on Power and Electrical Engineering (ACPEE)","volume":"194 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114308084","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

Bi-directional Sensitivity Analysis in Integrated Electricity-Natural Gas System 电-气一体化系统的双向灵敏度分析

2020 5th Asia Conference on Power and Electrical Engineering (ACPEE) Pub Date : 2020-06-01 DOI: 10.1109/ACPEE48638.2020.9136503

Zhewei Jiang, Z. Bao, Qihong Zhang, Dawei Chen

引用次数: 0

A Coordinated Preventive Control Optimization Method of Small Signal and Transient Stability Based on Sensitivity Analysis 基于灵敏度分析的小信号与暂态稳定协调预防控制优化方法

2020 5th Asia Conference on Power and Electrical Engineering (ACPEE) Pub Date : 2020-06-01 DOI: 10.1109/ACPEE48638.2020.9136220

Fang Tian, Xiaoxin Zhou, Zhihong Yu

引用次数: 0

Transient Stability Assessment using Gated Recurrent Unit 利用门控循环单元进行暂态稳定性评估

2020 5th Asia Conference on Power and Electrical Engineering (ACPEE) Pub Date : 2020-06-01 DOI: 10.1109/ACPEE48638.2020.9136443

Yuhao Zhou, Yude Yang

引用次数: 3

Topology identification method of low voltage distribution network based on data association analysis 基于数据关联分析的低压配电网拓扑识别方法

2020 5th Asia Conference on Power and Electrical Engineering (ACPEE) Pub Date : 2020-06-01 DOI: 10.1109/ACPEE48638.2020.9136335

Yang Zhichun, Shen Yu, Yang Fan, Lei Yang, Su Lei, Yan Fangbin

{"title":"Topology identification method of low voltage distribution network based on data association analysis","authors":"Yang Zhichun, Shen Yu, Yang Fan, Lei Yang, Su Lei, Yan Fangbin","doi":"10.1109/ACPEE48638.2020.9136335","DOIUrl":"https://doi.org/10.1109/ACPEE48638.2020.9136335","url":null,"abstract":"This paper introduces a topology identification method of low-voltage distribution network based on data association analysis. The low-voltage distribution network to be identified is divided into the single distribution transformer power off station areas, multiple distribution transformer station areas caused by 10kV distribution line power outage and the distribution transformer areas without power interruption based on low-voltage distribution network blackout event, restoration power on event and geographic location information. In each type of station area, Tanimoto similarity coefficient is used to calculate the correlation and non-correlation between distribution transformer, branch box, meter box and smart meter in each group, so as to achieve the topology identification of the low-voltage distribution network. And then the identified topology can be verified by combining the topology verification rules of the same distribution transformer station area has the same of outage and live state, outage duration, geographical location, power supply radius and so on. Through the actual case, it is proved that the method proposed in this paper can solve the problems of large amount of calculation, inaccuracy of calculation results, and inability to verify based on the existing big data mining methods. It realizes the efficient and accurate identification of distribution transformer substation topology, and improves the information level and data quality of distribution network.","PeriodicalId":223198,"journal":{"name":"2020 5th Asia Conference on Power and Electrical Engineering (ACPEE)","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127733734","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: 20

Electric Field Evaluation and Optimization of the Shielding Electrodes for ±535 kV DC Circuit Breaker ±535kv直流断路器屏蔽电极的电场评价与优化

2020 5th Asia Conference on Power and Electrical Engineering (ACPEE) Pub Date : 2020-06-01 DOI: 10.1109/ACPEE48638.2020.9136352

Zha Kunpeng, L. Hongzhou, Zhan Ting, Cao Junzheng, Zhou Jianbo, Chen Yushuo

引用次数: 1

Improved Fault Classification Method in Transmission Line based on K-means Clustering 基于k均值聚类的输电线路故障分类改进方法

2020 5th Asia Conference on Power and Electrical Engineering (ACPEE) Pub Date : 2020-06-01 DOI: 10.1109/ACPEE48638.2020.9136514

Haibao Zhai, Xingzhi Wang, M. Ge, Shuhai Feng, Lin Cheng, Yifan Deng

引用次数: 1

Calculation and Analysis of Micro-Shock Energy of Line Maintenance Personnel in High Electric Field 高电场条件下线路维修人员微冲击能量的计算与分析

2020 5th Asia Conference on Power and Electrical Engineering (ACPEE) Pub Date : 2020-06-01 DOI: 10.1109/ACPEE48638.2020.9136539

W. Pan, Xinrui Li, Ye Li

引用次数: 0

A Hierarchical Restoration Mechanism for Complex Distribution Networks Considering Multi-type Faults 考虑多类型故障的复杂配电网分层恢复机制

2020 5th Asia Conference on Power and Electrical Engineering (ACPEE) Pub Date : 2020-06-01 DOI: 10.1109/ACPEE48638.2020.9136473

J. Wen, Xing Qu

{"title":"A Hierarchical Restoration Mechanism for Complex Distribution Networks Considering Multi-type Faults","authors":"J. Wen, Xing Qu","doi":"10.1109/ACPEE48638.2020.9136473","DOIUrl":"https://doi.org/10.1109/ACPEE48638.2020.9136473","url":null,"abstract":"This paper presents a hierarchical electric service restoration mechanism for complex distribution networks to maximize restoration of out-of-service loads. Once a fault occurs, the dynamic topology analysis method is used to determine out-of-service areas, match restoration scheme, and update topological structure. Out-of-service loads can be restored by creating micro grid with distributed generators or network reconfiguration with main grid. And the optimal islanding strategy is determined to improve the utilization of distributed generator in the former condition. For the latter condition, the aim is to identify a reasonable service path to transfer the out-of-service loads to neighboring feeders. After then the connectivity of the main grid with distributed generators is restored. Whether the network optimization is carried out or not which depends on violations of the power flow constraints. Moreover, a new code scheme with avoiding infeasible solutions is employed to maintain the radial nature of the distribution network. Illustrative examples verify that the proposed mechanism can be obtained the reasonable restoration plans under multi-type faults.","PeriodicalId":223198,"journal":{"name":"2020 5th Asia Conference on Power and Electrical Engineering (ACPEE)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130013812","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

The Effect of secondary-DC-loss Protection on the Reliability of substation protection system 二次直流损耗保护对变电站保护系统可靠性的影响

2020 5th Asia Conference on Power and Electrical Engineering (ACPEE) Pub Date : 2020-06-01 DOI: 10.1109/ACPEE48638.2020.9136180

Zhang Xiaoyu, Wang Xingzhu, Qiu Yutao, Wang Song, Chen Ming, Wen Minghao

{"title":"The Effect of secondary-DC-loss Protection on the Reliability of substation protection system","authors":"Zhang Xiaoyu, Wang Xingzhu, Qiu Yutao, Wang Song, Chen Ming, Wen Minghao","doi":"10.1109/ACPEE48638.2020.9136180","DOIUrl":"https://doi.org/10.1109/ACPEE48638.2020.9136180","url":null,"abstract":"To solve the failure operation of remote backup protection for adjacent stations caused by the substation secondary DC power supply loss, numerous secondary dc loss(SDL) protection schemes have been carried out. However, there are few researches to evaluate the influence of SDL protection on the reliability of the conventional relay protection system of the substation, which may cause certain risks to the engineering application. In order to solve the above problem, a reliability model for the conventional relay protection system, which contains links of sampling, protection device and tripping, is established based on the fault tree analysis method. On this basis, a reliability model of the novel relay protection system including SDL protection is also built. The sequential Monte Carlo algorithm is used in this paper to access the protection system reliability. It obtains the failure sampling time and repair sampling time of one state switch through simulated sampling. With numerous simulations, the normal working time and working times of the system can be counted, and the system's Mean Time Between Failures(MTBF) will be obtained. The simulation results indicate that SDL protection will not reduce the overall reliability of substation relay protection system. On the contrary, it can improve substation protection reliability in the case of secondary DC power loss. This paper provides powerful theoretical support for the engineering application of SDL protection.","PeriodicalId":223198,"journal":{"name":"2020 5th Asia Conference on Power and Electrical Engineering (ACPEE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130042615","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: 2