2021 China International Conference on Electricity Distribution (CICED)最新文献

{"title":"The Stability Analysis of a Class of Electric Power Network Model","authors":"Shaojie Liu, Donghua Zhao, Wenrui Fan, Tie Li, Dai Cui","doi":"10.1109/CICED50259.2021.9556726","DOIUrl":"https://doi.org/10.1109/CICED50259.2021.9556726","url":null,"abstract":"The stability of equilibrium point is an essential problem to be considered in the study of power network system, a small fault in the system may lead to collapse of the power grid. This paper makes a detailed theoretical supplement to the stability analysis of the equilibrium point of the power network model proposed by Yang and Motter. We introduce noise and time delay that may exist in actual power network system, and study the stability of the equilibrium point of the power network model with noise and time delay. Besides, this paper improves the transmission line model of the power network model to make it closer to modern intelligent grid. Finally, a numerical simulation of a 7-bus power network system is carried out to further verify the stability of the equilibrium point of the power network with time delay and noise in this paper.","PeriodicalId":221387,"journal":{"name":"2021 China International Conference on Electricity Distribution (CICED)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125349438","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}

{"title":"Automatic Detection Method of Power Communication Network Breakpoint Data under Cloud Computing","authors":"Zhongzheng Tong, Yangzi Sun, Jie-sheng Zheng, Jun Lin","doi":"10.1109/CICED50259.2021.9556699","DOIUrl":"https://doi.org/10.1109/CICED50259.2021.9556699","url":null,"abstract":"This paper presents two methods based on neural network and clustering analysis are used to automatically detect break-point data of power communication network. It has a low recall rate and hinders the realization of power network planning objectives. In view of the above situation, an automatic detection method of power communication network break-point data under cloud computing is studied. This method is divided into four parts. Firstly, the connection model is constructed by the omni-directional construction mode of FP-tree micro-cellular, then the break-point data signal is collected by network tracker. In addition, the break-point data signal is filtered by wavelet filtering method, and finally the break-point data of power communication network is automatically detected by firefly algorithm. The results show that, compared with the two detection methods based on neural network and clustering analysis. Additionally, the recall rate of this detection method is increased by 3.1% and 2.27%, basically realizing the goal of power grid planning.","PeriodicalId":221387,"journal":{"name":"2021 China International Conference on Electricity Distribution (CICED)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122944615","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}

{"title":"Optimal configuration of industrial user-side energy storage considering power demand income in life cycle","authors":"F. Gao, Xiaohui Song, Yu Zhang, Yajie Li, Jianfang Li","doi":"10.1109/CICED50259.2021.9556747","DOIUrl":"https://doi.org/10.1109/CICED50259.2021.9556747","url":null,"abstract":"The optimal configuration method of energy storage considering the impact of optimal operation of energy storage on economic income is an important foundation for commercial investment in energy storage. This paper proposes an optimal configuration model of user-side energy storage aiming at the net present value of the entire life cycle of the energy storage system, and comprehensively considering the income of user peak-valley arbitrage and the reduction of demand electricity charges caused by two-part tariff. Considering the problem that the model cannot be solved directly since the operating variables and planning variables in the model are coupled with each other and the model contains exponential variables, this paper proposes the method based on the feasible region discretization and variable iterative correction to reduce the difficulty of solving the original model. Finally, the optimized results of the user-side energy storage configuration are calculated with data from two typical areas of Beijing and Shanghai, which verified the validity and stability of the model.","PeriodicalId":221387,"journal":{"name":"2021 China International Conference on Electricity Distribution (CICED)","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122954186","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}

{"title":"Analysis of Substation 35kV Reactance Switch Fault Based on ATP-EMTP","authors":"Yanfei Zhuang, Haiyan Yuan","doi":"10.1109/CICED50259.2021.9556729","DOIUrl":"https://doi.org/10.1109/CICED50259.2021.9556729","url":null,"abstract":"This paper Initial on the solar parabolic trough collectors…Operating overvoltage is a common overvoltage in the power system, and it is closely related to the operation mode of the power grid and equipment characteristics etc. Normal equipment in the system has a large insulation margin. Operating overvoltage can not cause damage to it, but it can pose a greater threat to equipment with weak insulation, which will affect the safe operation of the power grid. In the paper, a simulation was produced based on the electromagnetic transient simulation software ATP-EMTP for the 35kV reactance fault in a substation. The overvoltages subjected to the reactance and its switching equipment are analyzed , and the causes of the equipment damage were analyzed in detail. A reference treatment plan is proposed to provide guidance for practice.","PeriodicalId":221387,"journal":{"name":"2021 China International Conference on Electricity Distribution (CICED)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122019706","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}

{"title":"Analysis of Decomposition Products of Eco-friendly Gas C4F7N/CO2 under Spark Discharge","authors":"Yunkun Deng, Ke Wang, Chenwei Li, Boya Zhang, Jisheng Huang, Xianping Zhao","doi":"10.1109/CICED50259.2021.9556746","DOIUrl":"https://doi.org/10.1109/CICED50259.2021.9556746","url":null,"abstract":"In recent years, the g3 (C<inf>4</inf>F<inf>7</inf>N/CO<inf>2</inf>) gas produced by 3M has attracted widespread attention from scholars because of its good insulation properties and the greenhouse effect that is much lower than SF<inf>6</inf>^[1]-[5]. Preliminary research shows that this gas has a very good application prospect in power systems. In addition to the excellent electrical performance of replacing SF<inf>6</inf>, the decomposition characteristics of the new type of insulating gas under various operating conditions are also critical to the stable operation of electrical equipment ^[6],[7]. With the continuous development of partial discharges caused by various insulation defects in gas-insulated equipment, partial discharges may evolve into more serious spark discharges, which will cause serious deterioration of power equipment ^[8],[9]. At the same time, it also aggravates the decomposition process of the insulating gas. Aiming at the decomposition of C<inf>4</inf>F<inf>7</inf>N/CO<inf>2</inf> mixed gas, this paper uses pulse capacitors as a power source which can charge and discharge stably to build a frequency-controlled spark discharge fault test platform, and uses gas chromatography-mass spectrometry to qualitatively and quantitatively detect decomposition products, exploring the changes in decomposition products under different energy levels and different pressure. The results show that: the decomposition products of the C<inf>4</inf>F<inf>7</inf>N/CO<inf>2</inf> mixed gas under spark discharge fault are CO, CF<inf>4</inf>, C<inf>2</inf>F<inf>4</inf>, C<inf>2</inf>F<inf>6</inf>, C<inf>3</inf>F<inf>6</inf>, C<inf>3</inf>F<inf>8</inf>, CF<inf>3</inf>CN, C<inf>4</inf>F<inf>10</inf>, C<inf>2</inf>N<inf>2</inf>, C<inf>3</inf>HF<inf>7</inf>, C<inf>2</inf>F<inf>5</inf>CN and HCN. All decomposition products increase linearly with the accumulation of energy which comes from spark. The single spark discharge energy at different voltage levels is measured, which is a quadratic function relationship with the charging voltage value. The higher the energy of a single discharge, the faster the rate of decomposition products formation. The content of decomposition products under spark discharge continuously decreases with the increase of the total air pressure, and high air pressure has an inhibitory effect on the decomposition process.","PeriodicalId":221387,"journal":{"name":"2021 China International Conference on Electricity Distribution (CICED)","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129704841","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}

{"title":"A Practical Strategy for Three-phase Unbalance in distribution network Area Based on Multi-Dimensional Atlas","authors":"Yuan Lingfeng, Shen Zhufu, Wang Rui, Liu Fengyi","doi":"10.1109/CICED50259.2021.9556728","DOIUrl":"https://doi.org/10.1109/CICED50259.2021.9556728","url":null,"abstract":"In order to improve the relevance of the three-phase unbalance treatment in the distribution network area, this paper applies the map analysis tool to the daily monitoring work of the distribution network area repair, using historical data cleaning to extract the feature values, and pinpoint the shortcomings of the three-phase unbalance situation in the distribution network area According to different three-phase unbalance, different cooperative elimination strategies are adopted. The graph analysis tool specifically selects the method of extracting feature values to visualize the data. Taking the real data of the system as an example, it can be realized by using computer language programming, and the output results are correct and targeted. The three-phase unbalanced practical strategy based on multi-dimensional maps proposed in this paper can reduce the labor cost and time cost of the monitoring work in the distribution network area, improve the operation reliability of the distribution area and the display effect of the service platform.","PeriodicalId":221387,"journal":{"name":"2021 China International Conference on Electricity Distribution (CICED)","volume":"26 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116346387","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}

{"title":"Design and Research of Intelligent Inspection Management System for Distribution Network (CICED 2020)","authors":"Liang Jiezhong, Li Yong, Zhang Linjiang","doi":"10.1109/CICED50259.2021.9556721","DOIUrl":"https://doi.org/10.1109/CICED50259.2021.9556721","url":null,"abstract":"As the country's requirements for promoting the construction of the power market and promoting power technology innovation continue to increase, the application of intelligent products in the power system has received increasing attention. In the use of electric energy, the distribution network is a key link for users, and the safe operation of the distribution network directly affects the safety and reliability of power supply. This article summarizes the safety issues and inefficiencies caused by the traditional distribution network inspection methods, and introduces a new type of intelligent inspection management system. The intelligent inspection management system of the distribution network uses modern technical means to integrate the Production Management System (PMS), Geographic Information System (GIS), Radio Frequency Identification technology (RFID), Personal Digital Assistant (PDA), UAV inspection (UAV inspection) and Video Online Monitoring (Video Online Monitoring) are used in the operation, maintenance and overhaul of the distribution network. Make the inspection work of the distribution network more intelligent, informational and convenient, and can find and solve problems in a timely and effective manner. In this system, PMS is established based on an expert system, which can intelligently dispatch tasks and store equipment information; using GIS to accurately locate the position of the pole and tower, facilitate inspections and maintenance, and update the one-line diagram in real time; the intelligent identification technology basing on RFID, it can easily identify the inherent risks, defects and hidden dangers of the equipment are convenient for timely tracking and closed-loop; PDA can realize paperless office, improve the efficiency of on-site operation, and realize interconnection and intercommunication with PMS; the applications of UAV inspection and Video Online Monitoring technology make the distribution network’s inspection work is even more powerful and reduces the labor intensity of the staff. The application of this system has changed the traditional inspection method of distribution network, greatly improved the work efficiency of inspection, and effectively guaranteed the reliability of power supply.","PeriodicalId":221387,"journal":{"name":"2021 China International Conference on Electricity Distribution (CICED)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121740877","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}

{"title":"Model Quality Evaluation of Advanced Distribution Management System Based on Smart Grid Architecture Model","authors":"Jian Du, Yiming Lu, Congli Li, Xianxu Huo, Yi Ding, Xiaolu Li","doi":"10.1109/CICED50259.2021.9556844","DOIUrl":"https://doi.org/10.1109/CICED50259.2021.9556844","url":null,"abstract":"As the advanced functions of advanced management system (ADMS) need the integrated model from various systems, the quality of integrated model will be a key issue for the transition of distribution network business from data-driven into model-driven. From the perspective of improving the interoperability of the distribution management business, the quality evaluation metrics of the ADMS model is established in this paper, through mapping the ADMS use case analysis results to the interoperability layers of the smart grid architecture model (SGAM), and the implementation of the ADMS model quality evaluation system is proposed.","PeriodicalId":221387,"journal":{"name":"2021 China International Conference on Electricity Distribution (CICED)","volume":"353 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115920580","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}

{"title":"Research on Maximum Power Point Tracking Control of Wind-Solar Hybrid Generation System","authors":"C. Xing, X. Xi, Xin He, C. Xiang, Shengnan Li, Zhi Xu","doi":"10.1109/CICED50259.2021.9556817","DOIUrl":"https://doi.org/10.1109/CICED50259.2021.9556817","url":null,"abstract":"This article briefly analyzes the technical advantages of the wind-solar hybrid power generation system, builds models of wind power generation systems, photovoltaic systems, and storage batteries, focusing on the key to wind and photovoltaic power generation systems-maximum power point tracking (MPPT) control, and detailed analysis of the maximum wind and solar power. In order to improve the stability of the wind and solar hybrid power generation system after being connected to the grid. For its grid-connected inverter. A control strategy is proposed: segmented control and improved double closed-loop proportional integral (Proportion Integration, PI). That is to segment according to the strength of the scenery. Adopt the dual structure control of the outer ring of fan speed-the inner ring of fan current and the outer ring of DC boost circuit voltage-the inner ring of grid-connected current. In order to weaken the influence on the frequency and amplitude of the grid. First analyze the mathematical models of wind power generation, photovoltaic power generation, and storage batteries. Then build a complementary power generation system and propose a control strategy. Finally, the simulation is verified by simulation software. The simulation results show that the proposed control strategy can effectively achieve stable operation. For different periods after the wind and solar hybrid power generation system is connected to the grid. Reduce the fluctuation of grid-connected current and maintain the stability of voltage and current. Increase the power grid's ability to absorb new energy.","PeriodicalId":221387,"journal":{"name":"2021 China International Conference on Electricity Distribution (CICED)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131920262","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}

{"title":"Dispatch of Multi-Energy Systems with District Heating Network Considering the Renewable Power Generation Uncertainties","authors":"G. Qiang, Ying Guode, Zhu Yizhi, Dong Li","doi":"10.1109/CICED50259.2021.9556653","DOIUrl":"https://doi.org/10.1109/CICED50259.2021.9556653","url":null,"abstract":"The electrification of the heating system and transport sector facilitates the process of the multi-energy system integration, with the technologies of electric vehicles and district heating. In this paper, a multi-energy system consisting of renewable energy generation, electric vehicles, heat storages, electric heat pumps, energy storage, is presented and modeled to maximize its economic and environmental benefits. The uncertainty in the renewable generation is incorporated utilizing the K-means clustering method to generate representative scenarios, whilst the heat demand is simulated with the day-ahead outdoor temperature forecast. The dispatch of the system under a flexible price signal is modeled to minimize the energy costs and carbon dioxide emissions along with several cases utilized to test the applicability of the proposed model. Numerical results confirm the effectiveness of the proposed model, as the system energy cost from grid importation as well as the peak net demand decrease compared with no energy storage.","PeriodicalId":221387,"journal":{"name":"2021 China International Conference on Electricity Distribution (CICED)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132488701","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}