2020 4th International Conference on HVDC (HVDC)最新文献_第6页

Research of Synchronous condenser and UHVDC Reactive voltage coordinate control strategy for ± 800kV Xiangtan Converter Station ±800kV湘潭换流站同步凝汽器与特直流无功电压协调控制策略研究

2020 4th International Conference on HVDC (HVDC) Pub Date : 2020-11-06 DOI: 10.1109/HVDC50696.2020.9292833

Quan Hong, Hui Li, Jinbo Wu, Hao Xu, Li Li, Zhenwen Li

引用次数: 1

Study of Improved PageRank Algorithm in Key Node Identification of power system 改进PageRank算法在电力系统关键节点识别中的研究

2020 4th International Conference on HVDC (HVDC) Pub Date : 2020-11-06 DOI: 10.1109/HVDC50696.2020.9292792

Zhu Darui, W. Haifeng, D. Jiandong, Chen Wenji, Wang Rui

引用次数: 1

Fault Ride-through Demand of Large-scale Islanded Renewable Energy Connected to VSC-HVDC System and Its Key Technologies 大型孤岛可再生能源接入vcs - hvdc系统的故障穿越需求及关键技术

2020 4th International Conference on HVDC (HVDC) Pub Date : 2020-11-06 DOI: 10.1109/HVDC50696.2020.9292778

Yan Li, Hongzhi Liu, Y. Chi, Yiwen Fan, Xiangyu Li, F. Cheng, Zhibing Wang, Chunxia Wei, Lijun Xie

{"title":"Fault Ride-through Demand of Large-scale Islanded Renewable Energy Connected to VSC-HVDC System and Its Key Technologies","authors":"Yan Li, Hongzhi Liu, Y. Chi, Yiwen Fan, Xiangyu Li, F. Cheng, Zhibing Wang, Chunxia Wei, Lijun Xie","doi":"10.1109/HVDC50696.2020.9292778","DOIUrl":"https://doi.org/10.1109/HVDC50696.2020.9292778","url":null,"abstract":"The adaptability of renewable energy connected to the VSC-HVDC grid will become an important issue affecting grid operation. In particular, the complex interaction between renewable power generation and the power grid brings new challenges to the renewable power generation and VSC-HVDC grid to achieve fault ride-through. Therefore, it is necessary to study the fault ride-through strategies of the VSC-HVDC grid-renewable power generation combined system. According to the operating characteristics and adaptability of renewable energy clusters connected to the VSC-HVDC grid under different faults, this paper proposes technical requirements for high- / low-voltage fault ride-through of renewable power plants that are connected to the grid in island operation, and analyzes key technologies for renewable power generation dealing with AC faults at the sending end of the grid in island integration mode. It is expected to realize joint fault ride-through of renewable energy and VSC-HVDC, thereby increasing the availability of the system, contributing to the safe and stable operation of renewable energy and VSC-HVDC grid, providing technical support for the planning of large-scale renewable energy delivery methods, and effectively guiding the planning and design of renewable energy and VSC-HVDC grid","PeriodicalId":298807,"journal":{"name":"2020 4th International Conference on HVDC (HVDC)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125256238","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: 4

Improved Phase-coordinate Fixed-point Iterative Method Based on Equivalent Admittance Approximation for Power Flow Calculation in Three-phase Distribution Systems 基于等效导纳近似的三相配电网潮流计算改进相坐标定点迭代法

2020 4th International Conference on HVDC (HVDC) Pub Date : 2020-11-06 DOI: 10.1109/HVDC50696.2020.9292801

Zhigang Zhang, Mingrui Mo, Caizhu Wu

引用次数: 4

Research on Lightning Damage of Optical Fiber Overhead Ground Wires 光纤架空地线雷电损伤研究

2020 4th International Conference on HVDC (HVDC) Pub Date : 2020-11-06 DOI: 10.1109/HVDC50696.2020.9292789

Xin Zhu, X. Yao, Jinru Sun, Weikang Li, Hao Wang, Qingqing Li

{"title":"Research on Lightning Damage of Optical Fiber Overhead Ground Wires","authors":"Xin Zhu, X. Yao, Jinru Sun, Weikang Li, Hao Wang, Qingqing Li","doi":"10.1109/HVDC50696.2020.9292789","DOIUrl":"https://doi.org/10.1109/HVDC50696.2020.9292789","url":null,"abstract":"Optical fiber overhead ground wires (OPGW) is a special power cable that combines communication transmission and lightning protection. Because of its low cost, long working life, high reliability and many other advantages, it is widely used in power systems. In order to study the effect of direct damage caused by lightning, this paper designs a mechanical fixture that can exert a tensile force, and studies the lightning damage under different excitation sources. At the same time, three different lightning damage patterns are defined to quantitatively describe the degree of lightning damage. The results show that under the test conditions of a tungsten copper rod with a diameter of 10mm as the electrode, under the action of different components (A, B, C) of the lightning current, different damage forms to the OPGW strands are shown. The lightning current component C has the most obvious and most serious arc ablation effect on the strands. The lightning damage of the components B and C of the lightning current is relatively slight. The experimental results show the difference in damage of OPGW optical cables caused by different lightning current components, which is helpful to further understand OPGW's lightning damage mechanism, and can provide a theoretical basis for its test methods and standards.","PeriodicalId":298807,"journal":{"name":"2020 4th International Conference on HVDC (HVDC)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128808409","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

DC-Link Current Optimal Control of Current Source PWM Converter 电流源PWM变换器的直流链路电流最优控制

2020 4th International Conference on HVDC (HVDC) Pub Date : 2020-11-06 DOI: 10.1109/HVDC50696.2020.9292762

Chenghao Zhu, Han Wang, Jianwen Zhang, X. Cai, Miao Zhu, Wei Lv

引用次数: 0

A Chance-constrained Optimal Power Flow Model Based on Second-order Cone 基于二阶锥的机会约束最优潮流模型

2020 4th International Conference on HVDC (HVDC) Pub Date : 2020-11-06 DOI: 10.1109/HVDC50696.2020.9292806

Yi Liang, Shunyu Tang, Huili Tian, Zitong Wang, Xin Li, Gengfeng Li, Z. Bie

{"title":"A Chance-constrained Optimal Power Flow Model Based on Second-order Cone","authors":"Yi Liang, Shunyu Tang, Huili Tian, Zitong Wang, Xin Li, Gengfeng Li, Z. Bie","doi":"10.1109/HVDC50696.2020.9292806","DOIUrl":"https://doi.org/10.1109/HVDC50696.2020.9292806","url":null,"abstract":"The uncertainty of new energy output and load fluctuation has a great impact on the safe operation of the power system. At present, there are few AC optimal power flow studies considering uncertainty. Most of the studies mainly focus on DC power flow. In this paper, a second-order cone optimal power flow model (SOC-ACOPF) is established. Then this paper advances a chance-constrained optimal power flow model (SOC-CC-ACOPF) and gives its solution method. By simplifying the power flow equation and introducing relaxation variables, the optimal power flow problem is transformed into a second-order cone optimization problem, which has better stability and avoids local optimum. In addition, to restrict the error of the second-order cone relaxation, this paper adds an upper limit of relaxation. The uncertainty of node power takes into account the prediction error of new energy and load. The relationship of the uncertainty is derived by the combination of the error, power flow equations, and Taylor's expansion. Then the error distribution of the uncertainty is obtained. Based on the chance-constrained construction method of error distribution, the chance-constrained optimal power flow model is established as a second-order cone optimization problem that can be directly solved. Finally, this paper uses the IEEE 118- bus network to verify the effectiveness of the method.","PeriodicalId":298807,"journal":{"name":"2020 4th International Conference on HVDC (HVDC)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128443711","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

Redefine Resilience Engineering:Based on Progress of Debugging and Checking Technology in HVDC Projects of CSG 重新定义弹性工程——基于中电集团高压直流工程调试检测技术进展

2020 4th International Conference on HVDC (HVDC) Pub Date : 2020-11-06 DOI: 10.1109/HVDC50696.2020.9292777

Song Yang, Xi Huifan, Liu Hongtao, Li Peng, Xue Guanghu

{"title":"Redefine Resilience Engineering:Based on Progress of Debugging and Checking Technology in HVDC Projects of CSG","authors":"Song Yang, Xi Huifan, Liu Hongtao, Li Peng, Xue Guanghu","doi":"10.1109/HVDC50696.2020.9292777","DOIUrl":"https://doi.org/10.1109/HVDC50696.2020.9292777","url":null,"abstract":"High Voltage Direct Current(HVDC) transmission projects has been playing crucial role in China Southern Power Grid. These projects transmit the numerous hydro electricity from Yunnan to Guangdong and Guangxi. Keeping these HVDC projects stabilized operating is important to the whole power grid. Different from Alternate Current(AC) transmission projects, 78% of debugging and checking work for HVDC devices is proceeding before being service as estimated. Currently about 65% electricity from western to eastern of China Southern Power Grid(CSG) is transmitted by HVDC devices. So generally speaking, the safety and reliability of half electricity from western to eastern of CSG is checking during this short period before being service. Until 2020,there are 10 HVDC channels transmitting hydro power to the eastern area in CSG. Meanwhile there are great progress in debugging and checking work for HVDC projects to keep the device and grid stable and reliable. Referring the resilience engineering, the STAMP and so other famous concepts about industrial safety, the paper illustrated the attribution method for safety, demonstrated that how to diminish the unknown risk and how to prove the efficiency is the core of resilience engineering. After that the paper divided the work of HVDC projects into 3 systems: devices system, power grid system and human factor system, summarized the principles for each system, and presented the concept of redefining the resilience engineering to the HVDC projects safety and stable. Based on the principles concluded, the paper presented the redefined resilience engineering as enough and comparable visibility, multiple controlling methods and prevention of unknown risk.","PeriodicalId":298807,"journal":{"name":"2020 4th International Conference on HVDC (HVDC)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134307770","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

Electrical Field Change of an XLPE Bounded Air-filled Spherical Cavity during DC Voltage Decreasing and Voltage Polarity Reversal 交联聚乙烯有界充气球腔直流降压和电压极性反转过程中的电场变化

2020 4th International Conference on HVDC (HVDC) Pub Date : 2020-11-06 DOI: 10.1109/HVDC50696.2020.9292887

Xiao Gu, Lu Chen, Yang Xu

引用次数: 0

Control Strategies for Wind Farm Integration by Hybrid HVDC Transmission 混合直流输电风电场集成控制策略

2020 4th International Conference on HVDC (HVDC) Pub Date : 2020-11-06 DOI: 10.1109/HVDC50696.2020.9292847

Chunke Hu, Chengyong Zhao, Jiangping Jing, Zhibing Wang

{"title":"Control Strategies for Wind Farm Integration by Hybrid HVDC Transmission","authors":"Chunke Hu, Chengyong Zhao, Jiangping Jing, Zhibing Wang","doi":"10.1109/HVDC50696.2020.9292847","DOIUrl":"https://doi.org/10.1109/HVDC50696.2020.9292847","url":null,"abstract":"Wind farm integration by voltage source converter can mitigate negative influence by fluctuating output wind power. Besides, voltage source converter can provide the wind farm with necessary voltage support by controlling the AC voltage for normal operation of wind farm. Wind power integration by high voltage direct current transmission can be further researched, which includes islanded wind farm integration and bundled wind-thermal power integration. In a comparison among voltage source converters, hybrid modular multilevel converter is selected at sending end of the system and is connected with the wind farm. Line commutated converter is used at the receiving end with a comprehensive consideration of economy and technology. The wind farm integration by hybrid high voltage direct current system has obvious advantages when the receiving end is strong. Structure and operation principle of the system are introduced, and feasible control strategies of converters are devised. The hybrid system needs cooperation of voltage source converter and line commutated converter, especially during the startup procedure. A three-stage startup control strategy of the system is designed and verified by simulation. The startup process is smooth and stable, and after that, the system can track respective setting values accurately. Response of the system to fluctuating wind speed is studied. Output power of the wind farm changes with the wind speed, and power of the system will change accordingly. The system can operate normally under fluctuating wind speed.","PeriodicalId":298807,"journal":{"name":"2020 4th International Conference on HVDC (HVDC)","volume":"182 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133802715","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