2021 International Conference on Power System Technology (POWERCON)最新文献_第8页

Choice of Transition Scheme for Diamond Distribution Network Considering the Combination of Reliability and Economy 综合考虑可靠性和经济性的金刚石配电网过渡方案选择

2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697644

Xia Minhao, Wang Jun, Chou Cheng, Zhao Wanjian, Liu Hong, Wang Haojia

引用次数: 0

Control performances of CSP generator’s excitation system and speed governor based on measured data 基于实测数据的CSP发电机组励磁系统和调速器控制性能研究

2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697604

Liang Zhao, Qiang Zhou, Da-wei Zhao, Ningbo Wang, Fubao Wu, Xitian Wang

{"title":"Control performances of CSP generator’s excitation system and speed governor based on measured data","authors":"Liang Zhao, Qiang Zhou, Da-wei Zhao, Ningbo Wang, Fubao Wu, Xitian Wang","doi":"10.1109/POWERCON53785.2021.9697604","DOIUrl":"https://doi.org/10.1109/POWERCON53785.2021.9697604","url":null,"abstract":"In order to overcome the energy crisis and protect the environment, renewable energy represented by wind and photovoltaic (PV) power generation has been widely valued and vigorously developed in recent two decades. Many countries put forward the development goal of high proportion renewable energy power system, and some countries even put forward the idea of 100% renewable energy power system. Affected by the characteristics of wind speed, solar irradiance and other resources, the power output of wind and PV generation has strong volatility and intermittence. Large amount of wind and PV power integration will bring huge challenges to the power system. How to balance the consumption of high penetrated renewable energy and the stable operation of power system? The concentrating solar power (CSP) can be a good solution. However, at present, the research on the CSP generation integrated with power grid mainly focuses on the long-time scale such as dispatching operation, and the research on the control of seconds-minutes level is less, and the research combined with the field measured data is almost blank. Excitation system and speed governor are the key control components of CSP generator set, and their actual performances play a critical role for the safety of power system. Based on the measured data of an actual CSP plant in Gansu province, China, this paper establishes the excitation system and governor control models for CSP generator set, and investigates its control performances under various operating conditions. The simulation results can provide some reference for the related research in operation and control of CSP generation.","PeriodicalId":216155,"journal":{"name":"2021 International Conference on Power System Technology (POWERCON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132830919","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

Power skill training knowledge base construction based on knowledge map and improved FP-Growth 基于知识图谱和改进FP-Growth的电力技能培训知识库构建

2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697786

Jiabing Han, Yukai Li, Quan Wang, Meng Yang, Jun Zhao, Jinhui Zhao

引用次数: 0

Renewable Integrated Transient Voltage Stability Mechanism Analysis using Hopf Bifurcation and Discrete Wavelet Transform 基于Hopf分岔和离散小波变换的可再生集成暂态电压稳定机制分析

2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697626

Yawei Wei, Xiaoxin Zhou, Yalou Li, Y. Lv, Bin Wang, Jing Ma

{"title":"Renewable Integrated Transient Voltage Stability Mechanism Analysis using Hopf Bifurcation and Discrete Wavelet Transform","authors":"Yawei Wei, Xiaoxin Zhou, Yalou Li, Y. Lv, Bin Wang, Jing Ma","doi":"10.1109/POWERCON53785.2021.9697626","DOIUrl":"https://doi.org/10.1109/POWERCON53785.2021.9697626","url":null,"abstract":"The power system nonlinearity has increased due to large-scale renewable energy integration. Therefore, the new power system suffers for the transient voltage stability challenge. The bifurcation theory has proven to be a powerful method to understand the nonlinear dynamic voltage oscillations and stability issues. From the perspective of bifurcation theory, the renewable energy integrated power system voltage unstable situation belongs to the Hopf Bifurcation type. In this paper, a new mechanical analysis is proposed using the discrete wavelet transform to help translate the dynamic voltage issues from eigenvector plane to time-domain decomposed signals. It connects the voltage support behavior with the DAE equations characteristics by capturing the voltage curve transition time period. This analysis explains the transient voltage behavior directly and convenient for comparison. The modified CEPRI 36 bus system is utilized for demonstration. Based on the aforementioned mechanism analysis, a remedial SVC device is deployed to avoid the severe case into a Hopf bifurcation unstable situation.","PeriodicalId":216155,"journal":{"name":"2021 International Conference on Power System Technology (POWERCON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133983654","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

Converter-Driven Low-Frequency Stability Analysis and Compensation in Weak-Grid-Tied VSCs 弱并网VSCs变换器驱动的低频稳定性分析与补偿

2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697855

Guanglu Wu, Shanshan Wang, Bing Zhao, Hong Hu, Jianhua Li, Lu Cao, Haoyin Ding, Lin Yu, Quan Ma

{"title":"Converter-Driven Low-Frequency Stability Analysis and Compensation in Weak-Grid-Tied VSCs","authors":"Guanglu Wu, Shanshan Wang, Bing Zhao, Hong Hu, Jianhua Li, Lu Cao, Haoyin Ding, Lin Yu, Quan Ma","doi":"10.1109/POWERCON53785.2021.9697855","DOIUrl":"https://doi.org/10.1109/POWERCON53785.2021.9697855","url":null,"abstract":"This paper analyzes converter-driven low- frequency oscillations of current controlled weak-grid-tied voltage-source converters (VSCs) and proposes an effective method to improve the dynamic behavior. First, the specific single-input single-output (SISO) open-loop transfer function from the active power to the active power reference is obtained. From the SISO transfer function, it is revealed that the low- frequency oscillation frequency mainly depends on the active power control (APC)’s bandwidth in the outer loop. Moreover, it is revealed that the PLL brings phase lag near the frequency of the PLL bandwidth in weak-grid conditions, which results in the smaller phase margin and the weaker damping. By fully taking advantage of transfer functions, a novel reset control based compensator is presented in the outer loop without changing the control structure. The PI+CI control increases the phase margin/oscillation damping by resetting the integrator once the power error signal crosses zero. Bode plots and time-domain simulation results validate the efficacy of the proposed method in mitigating low-frequency oscillations.","PeriodicalId":216155,"journal":{"name":"2021 International Conference on Power System Technology (POWERCON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132249345","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

Utilization of Electrochemical Energy Storage System with External Characteristics of Voltage Source for Independent Voltage Support in Power Systems 具有电压源外特性的电化学储能系统在电力系统独立电压支撑中的应用

2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697752

Shang Zhang, Xiaohui Qin, Jian Zhang, Chunmeng Chen

引用次数: 0

Locational marginal pricing-oriented transmission network expansion planning with consideration of line capacity sensitivity 考虑线路容量敏感性的区位边际定价输电网扩容规划

2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697882

Liu Yang, Liu Fang, Gou Jing, Pangtuo Bo, Han Yuqi, Wang Fuyang, L. Youbo

{"title":"Locational marginal pricing-oriented transmission network expansion planning with consideration of line capacity sensitivity","authors":"Liu Yang, Liu Fang, Gou Jing, Pangtuo Bo, Han Yuqi, Wang Fuyang, L. Youbo","doi":"10.1109/POWERCON53785.2021.9697882","DOIUrl":"https://doi.org/10.1109/POWERCON53785.2021.9697882","url":null,"abstract":"Under the market environment, the traditional power grid expansion planning model is difficult to reflect the quantitative impact on the power grid investment income by global supply, demand situation, the willingness of market players and social benefits under the competitive market model in the future. In the high proportion hydropower grid, the mismatch between the capacity of hydropower transmission section and the difference between the high and low power flow leads to network congestion and trade surplus. In this paper, a transmission network expansion planning model based on the market-oriented electricity price is proposed in a high-proportion hydropower scenario. The upper level model maximizes the investment income and forms a planning decision line. The lower layer adopts the improved K-means clustering algorithm to obtain the typical annual operation mode of the high-proportion hydropower grid. Based on the market transaction clearing results and regional load response characteristics, it quantifies the post-load increment and over-network utilization rate of line planning and guides the power grid expansion planning with market price signals to promote the regional hydropower resources consumption. KKT optimal conditions are used to realize the coupling of the upper and lower layers of the model. The bi-level programming problem is transformed into a mixed integer programming problem for stable solution. Finally, a practical power grid with high proportion of hydropower in southwest China is taken as an example. The influence of market signal of high proportion of hydropower connected to the extended planning result is verified by comprehensively comparing the congestion surplus, investment income and proportion of hydropower consumption with different planning methods.","PeriodicalId":216155,"journal":{"name":"2021 International Conference on Power System Technology (POWERCON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115359502","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 ULFS Strategies with DGs in Isolated Distribution Systems 孤立配电系统中带dg的ULFS策略研究

2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697783

Zhipeng Liu

{"title":"Research on ULFS Strategies with DGs in Isolated Distribution Systems","authors":"Zhipeng Liu","doi":"10.1109/POWERCON53785.2021.9697783","DOIUrl":"https://doi.org/10.1109/POWERCON53785.2021.9697783","url":null,"abstract":"Under frequency load shedding (ULFS) is not a new problem. However, the wide penetration of distributed generators (DGs) in power systems especially in distribution systems, may result in new features into this traditional problem. DGs have extensive impacts on power system planning, operation and market management. Hence, it is necessary to examine the appropriate ULFS strategy for a power system especially a distribution system with DGs. On the other hand, one of the strong benefits of DGs is the ability to improve reliability by continuing operation of electrical islands when an event causes the separation from the main grid, hence the wide employment of DGs is helpful for the secure operation a microgrid. Given this background, research on ULFS Strategies with DGs in isolated distribution systems was firstly present to examine different dynamic responses in the microgrid subject to a disturbance. Secondly, with the effects of the developed UFLS strategy, many simulations for different scenarios in a microgrid with DGs ( i.e. a thermal unit and a wind unit) respectively, were carried out. Finally, conclusions on ULFS strategies with DGs in isolated distribution systems was present. It appears necessary to examine the ULFS strategy in an isolated distribution system/microgrid.","PeriodicalId":216155,"journal":{"name":"2021 International Conference on Power System Technology (POWERCON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115191226","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

Enhanced Nonlinear Passivity Based Control for Power Conversion System 基于增强非线性无源控制的电力转换系统

2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697747

Bin Yu, Ting Zhou, Bowen Huang, Hui Li, Haifeng Liu, J. Lai

{"title":"Enhanced Nonlinear Passivity Based Control for Power Conversion System","authors":"Bin Yu, Ting Zhou, Bowen Huang, Hui Li, Haifeng Liu, J. Lai","doi":"10.1109/POWERCON53785.2021.9697747","DOIUrl":"https://doi.org/10.1109/POWERCON53785.2021.9697747","url":null,"abstract":"This paper proposes an enhanced nonlinear passivity-based control (ePBC) for the power conversion system (PCS) to solve the lumped disturbances suppression problem, including external disturbances and internal disturbances consisting of system nonlinearities, model mismatches, coupling effects and so on. The PBC based on port-controlled Hamiltonian with dissipation (PCHD) model is designed for fast feedback tracking and stabilization of the nominal PCS. Then, the lumped disturbances are estimated by a nonlinear disturbance observer and compensated by feedforward term. Details on the design of baseline PBC, the nonlinear disturbance observer and stability robustness analysis are provided in this paper. With proposed method, a noticeable robustness against the lumped disturbances can be achieved as no more accurate system model is need for PBC method. The proposed method is implemented and validated through a down-scaled laboratory prototype. The simulation and experimental results are compared with the conventional PI and PBC methods, confirming that the proposed method can successfully achieve a good performance in zero steady-state tracking error, fast dynamic response and decoupling effectiveness against the lumped disturbances.","PeriodicalId":216155,"journal":{"name":"2021 International Conference on Power System Technology (POWERCON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115302161","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

Optimization Algorithm and Application of Electrification Level Considering the Development of Energy Storage 考虑储能发展的电气化水平优化算法及应用

2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697778

Kangli Xiang, Wenyue Cai, Siying Zhang, Jinchun Chen

引用次数: 0