2020 IEEE 4th Conference on Energy Internet and Energy System Integration (EI2)最新文献_第5页

The Modified Thermal Circuit Model for Three-phase Unbalanced Operation of Distribution Transformers 配电变压器三相不平衡运行的修正热回路模型

2020 IEEE 4th Conference on Energy Internet and Energy System Integration (EI2) Pub Date : 2020-10-30 DOI: 10.1109/EI250167.2020.9347384

Lingming Kong, W. Mo, Simin Luo

{"title":"The Modified Thermal Circuit Model for Three-phase Unbalanced Operation of Distribution Transformers","authors":"Lingming Kong, W. Mo, Simin Luo","doi":"10.1109/EI250167.2020.9347384","DOIUrl":"https://doi.org/10.1109/EI250167.2020.9347384","url":null,"abstract":"Distribution transformers (DT) are the core equipment of distribution power network. During the operation of DT, the internal temperature distribution is not uniform. Hotspot temperature is the most representative parameter. It can reflect the temperature change and insulation aging rate of the DT to guide the actual operation. The hot-spot temperature can be calculated by building the thermal circuit model of transformers. Both the IEEE and IEC standards provide methods for building the thermal circuit model based on the top oil temperature rise and the bottom oil temperature rise. These thermal circuit models are all single-phase model. They assumed that there is no heat exchange for each phase of transformers when the three-phase load are same. However, these models are not applicable to the three-phase unbalanced transformers. The three-phase unbalanced operation of DT is unavoidable in practice. In order to solve this problem, a modified three-phase thermal circuit model for DT was proposed in this paper. It considered the influence of the three-phase unbalanced operation. It modified the traditional thermal circuit model which is based on the top oil temperature rise. The modified model was compared with the standard models through the actual examples. The results showed that the modified model proposed in this paper can reflect the hot-spot temperature of each phase for DT. Compared with the traditional thermal circuit models, the modified model considered the effect of three-phase unbalanced operation. It can accurately calculate the hot-spot temperature of the DT in theory.","PeriodicalId":339798,"journal":{"name":"2020 IEEE 4th Conference on Energy Internet and Energy System Integration (EI2)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129265102","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

An Overall Control of Doubly fed Variable Speed Pumped Storage Unit in Pumping Mode 双馈变速抽水蓄能机组在抽水模式下的整体控制

2020 IEEE 4th Conference on Energy Internet and Energy System Integration (EI2) Pub Date : 2020-10-30 DOI: 10.1109/EI250167.2020.9346705

Dinglin Li, G. Gong, Jingliang Lv, Xinjian Jiang, Rufei He

{"title":"An Overall Control of Doubly fed Variable Speed Pumped Storage Unit in Pumping Mode","authors":"Dinglin Li, G. Gong, Jingliang Lv, Xinjian Jiang, Rufei He","doi":"10.1109/EI250167.2020.9346705","DOIUrl":"https://doi.org/10.1109/EI250167.2020.9346705","url":null,"abstract":"Doubly fed induction machine(DFIM) has excellent speed regulation performance, which can meet the demand of frequency and voltage regulation of power grid and solve the problem of efficiency reduction of pump-turbine resulting from the change of hydraulic head when applied to pumped storage. To omit the drainage process of runner chamber before DFIM start-up, a control method of soft-starting with slight load is proposed which ensures that the speed of DFIM increases smoothly from zero to the required for gridconnection. The field current compensator and rotor position angle compensator are designed to improve the control accuracy for grid-connection. The operation characteristic curve of pump-turbine and the output of grid frequency controller are considered comprehensively to achieve the load optimal regulative. With the methods mentioned above, an overall control strategy of doubly fed variable speed pumped storage unit in pumping mode is proposed, as well as the control flow. The control strategy is simulated in MATLAB and implemented on a towing unit platform. Results of simulation and experiment verified the effectiveness of the proposed strategy, including soft-start with light-load, grid-connection with no inrush current and speed regulation.","PeriodicalId":339798,"journal":{"name":"2020 IEEE 4th Conference on Energy Internet and Energy System Integration (EI2)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124585906","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

Black Start Process Simulation of Isolated Power Grid Based on PSASP 基于PSASP的隔离电网黑启动过程仿真

2020 IEEE 4th Conference on Energy Internet and Energy System Integration (EI2) Pub Date : 2020-10-30 DOI: 10.1109/EI250167.2020.9347216

Xiaolong Wang, Yufu Lu, Yanming Ke, Jian Xu, Zilong Wang, S. Liao, Guanzhong Liu, Changqi Tan, Yawei Zhang, Boyu Xie

{"title":"Black Start Process Simulation of Isolated Power Grid Based on PSASP","authors":"Xiaolong Wang, Yufu Lu, Yanming Ke, Jian Xu, Zilong Wang, S. Liao, Guanzhong Liu, Changqi Tan, Yawei Zhang, Boyu Xie","doi":"10.1109/EI250167.2020.9347216","DOIUrl":"https://doi.org/10.1109/EI250167.2020.9347216","url":null,"abstract":"For the black start process of isolated power grid, the capacity of black start system is small, and the ability of anti disturbance and impact is weak. The starting impact of asynchronous motor in black start stage has great influence on system voltage and frequency stability. The best choice is to simulate the established scheme of black start through whole process simulation to verify its safety and reliability. In this paper, based on PSASP electromechanical transient calculation and analysis software, taking the black start design scheme of Indonesia Weda Bay industrial park’s thermal power project as the background, the electrical topology of the black start process is modeled. And also the model parameters of diesel governor and Automatic Voltage Regulator are debugged, and the actual model data is restored as much as possible. The influence of governor and automatic voltage regulator on system stability performance is analyzed accurately. The reliability of the established scheme is verified through the comparison of field wave recording data and simulation.","PeriodicalId":339798,"journal":{"name":"2020 IEEE 4th Conference on Energy Internet and Energy System Integration (EI2)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129739046","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

Dynamic Load Shedding Strategy Using Distributional Deep Reinforcement Learning in Power System Emergency Control 基于分布式深度强化学习的电力系统应急控制动态减载策略

2020 IEEE 4th Conference on Energy Internet and Energy System Integration (EI2) Pub Date : 2020-10-30 DOI: 10.1109/EI250167.2020.9346749

Siyuan Chen, Yuyang Bai, Zhang Jun

引用次数: 1

Generation Plan Liberalization Scheme: A Method Based on Multi-objective and MPEC 发电计划自由化方案:一种基于多目标和MPEC的方法

2020 IEEE 4th Conference on Energy Internet and Energy System Integration (EI2) Pub Date : 2020-10-30 DOI: 10.1109/EI250167.2020.9346870

Q. Ma, Ji-song Zhu, Dijie Huang, Cheng Huang, Z. Jing, Baike Chen, Yuhui Song

{"title":"Generation Plan Liberalization Scheme: A Method Based on Multi-objective and MPEC","authors":"Q. Ma, Ji-song Zhu, Dijie Huang, Cheng Huang, Z. Jing, Baike Chen, Yuhui Song","doi":"10.1109/EI250167.2020.9346870","DOIUrl":"https://doi.org/10.1109/EI250167.2020.9346870","url":null,"abstract":"Planned electricity (as opposed to market electricity) plays an important role in China’s electricity market reform process. This article provides a multi-objective and mathematical programs with equilibrium constraints (MPEC) based method for power generation plan liberalization from power grid company’s perspective. As a decision maker, power grid companies pursue their own profit maximization and consider the market survival of high-cost units. The weighted method is used to transform the multi-objective to a single objective. The proposed method combines power grid company decision and power market clearing together, through the bilevel optimization approach to make the liberalization scheme can satisfy the power grid companies own profit maximization as well as the market existence problem of high-cost units. An illustration case is designed to show how the method works. At the same time, different parameters also be simulated. Case study shows that the proposed method can help power grid companies to make the decision of power generation liberalization scheme according to its preference. At last, the conclusion of the example analysis and the prospect of the future research are given.","PeriodicalId":339798,"journal":{"name":"2020 IEEE 4th Conference on Energy Internet and Energy System Integration (EI2)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123912754","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

Application of Optical Wireless Communications for the 5G enforced Smart Grids 光无线通信在5G强制智能电网中的应用

2020 IEEE 4th Conference on Energy Internet and Energy System Integration (EI2) Pub Date : 2020-10-30 DOI: 10.1109/EI250167.2020.9347307

Zhou Zhou, Wei Wang, Fangxiao Dong, Jing Jiang, M. Kavehrad

{"title":"Application of Optical Wireless Communications for the 5G enforced Smart Grids","authors":"Zhou Zhou, Wei Wang, Fangxiao Dong, Jing Jiang, M. Kavehrad","doi":"10.1109/EI250167.2020.9347307","DOIUrl":"https://doi.org/10.1109/EI250167.2020.9347307","url":null,"abstract":"With the fast development of power grid, there is an urgent need for low delay, wide bandwidth, high reliable, and extensive connected information services, which is planned to be implemented by the emerging 5G technology for future smart grid. 5G has special advantages of providing Enhanced Mobile Broadband (eMBB), Ultra-reliable and Low Latency Communications (uRLLC), and Massive MachineType Communication (mMTC). Based on current situation, the 5G upgrading involves the modifications of business applications, network support, security, management, and other essential aspects, and it will roughly take 3-5 years. The deployment of 5G equipment also requires a great deal of investment and it may not be economically beneficial in some places where power enterprises incomes is not satisfactory. Therefore, this paper proposes the optical wireless communications (OWC) as an supplement technology for it will be able to provide as satisfactory networking performance as 5G while it has advantages of fast deployment and low cost which work as a good supplement to 5G. This paper describes the general deployment method of OWC in power grid systems and analysis its performance via Monte Carlo simulation (MCS).","PeriodicalId":339798,"journal":{"name":"2020 IEEE 4th Conference on Energy Internet and Energy System Integration (EI2)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123471678","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

Research on Low-latency Power Communication Technology 低时延电力通信技术研究

2020 IEEE 4th Conference on Energy Internet and Energy System Integration (EI2) Pub Date : 2020-10-30 DOI: 10.1109/ei250167.2020.9346847

Yanling Zhang, Zhiyu Chen, Qing Yang, Z. Yuan, Yunrui He, Taohua Wang

{"title":"Research on Low-latency Power Communication Technology","authors":"Yanling Zhang, Zhiyu Chen, Qing Yang, Z. Yuan, Yunrui He, Taohua Wang","doi":"10.1109/ei250167.2020.9346847","DOIUrl":"https://doi.org/10.1109/ei250167.2020.9346847","url":null,"abstract":"With the development of energy Internet, the business types of power grid are increasing day by day, and the demand of multi service bearing is prominent. The mode of multi network hybrid networking puts forward higher requirements for power communication network. Power communication network is becoming more and more important in enterprise operation, and the requirement of low delay of business interaction in power grid production is becoming more and more strict. Compared with the traditional time division multiplexing network, Internet protocol/multi-protocol label switching (IP/MPLS) can improve the performance of data transmission in multi service scenarios and ensure the security of service transmission. In order to improve the carrying capacity and operation efficiency of power communication network under the energy Internet environment, this paper carries out the technical verification of using IP/MPLS technology to build a new generation of power communication network with low delay and high reliability, so as to improve the control ability of business data transmission and further support the construction of energy Internet.","PeriodicalId":339798,"journal":{"name":"2020 IEEE 4th Conference on Energy Internet and Energy System Integration (EI2)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123492692","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

Optimal Trading Strategy of Coordinating Electricity Purchase in Monthly Electricity Market and Day-ahead Market Based on CVaR 基于CVaR的月电力市场和日前市场协调购电的最优交易策略

2020 IEEE 4th Conference on Energy Internet and Energy System Integration (EI2) Pub Date : 2020-10-30 DOI: 10.1109/EI250167.2020.9346656

Yingchun Feng, Tianyu Li, Ciwei Gao, Tao Chen, Xuesong Li, Yu Jiang

引用次数: 0

Correlation Analysis of Reactor Internal and External Vibration Based on Sum Squared Residual 基于和平方残差的反应器内外振动相关性分析

2020 IEEE 4th Conference on Energy Internet and Energy System Integration (EI2) Pub Date : 2020-10-30 DOI: 10.1109/EI250167.2020.9347060

Shan-wei Wu, Shanhong Tao

{"title":"Correlation Analysis of Reactor Internal and External Vibration Based on Sum Squared Residual","authors":"Shan-wei Wu, Shanhong Tao","doi":"10.1109/EI250167.2020.9347060","DOIUrl":"https://doi.org/10.1109/EI250167.2020.9347060","url":null,"abstract":"The vibration of electric equipment, such as reactor, can reflect the condition of the equipment. It is very important to measure and analyze the information of reactor vibration for the diagnosis of reactor operation. The vibration of the inner winding and core of the reactor cannot be measured directly, and the vibration measuring points are usually set on the external surface of the oil tank. In this paper, by comparing the vibration signals of reactor, the relationship between the vibration of external and internal measuring points is explored. Firstly, several vibration sensors are set on oil-immersed large reactor outside surface and inside, and different voltages are applied to the reactor to obtain the internal and external vibration signals of the reactor under the corresponding operating condition. Then, the effectiveness of PCC (Pearson Correlation Coefficient) and RSSR (Reciprocal of Sum Squared Residual) on the vibration correlation analysis is compared and analyzed. Finally, the average value of RSSR under different voltage levels is selected as the basis for evaluating the correlation, and the correlation between reactor external and internal measurement points is analyzed. The correspondence law between the external vibration measurement point and the internal measurement point is proposed.","PeriodicalId":339798,"journal":{"name":"2020 IEEE 4th Conference on Energy Internet and Energy System Integration (EI2)","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121346983","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

Protection method of small current grounding system based on phase current variation 基于相电流变化的小电流接地系统保护方法

2020 IEEE 4th Conference on Energy Internet and Energy System Integration (EI2) Pub Date : 2020-10-30 DOI: 10.1109/EI250167.2020.9346610

Xiaobing Ding, Zebing Shi, Jiang Yu, Qin Pang, Kun Yu, Xiangjun Zeng

引用次数: 0