HVDC Grid Segmentation Analysis for Blackouts Reduction
HVDC Grid Segmentation Analysis for Blackouts Reduction作者机构：Electrical Engineer Department Federal Centre of Technological Education (CEFET-MG) Belo Horizonte Brazil
出 版 物：《Journal of Power and Energy Engineering》 (电力能源（英文）)
年 卷 期：2017年第5卷第3期
页 面：36-48页
学科分类：1002[医学-临床医学] 100214[医学-肿瘤学] 10[医学]
主 题：DC-Segmentation Grid Segmentation DC Link Blackouts Cascading Outages
摘 要：Segmentation of large AC systems through DC links introduces a new concept that utilizes the advantages of direct current transmission to improve network reliability and increase power transfer capacity. Technical literature argues that the segmentation of the AC network and the introduction of DC links at these systems connection points bring benefits to system operation, once contingencies generated on one side of the DC connection point would not be reflected on the other side of DC connection, thereby reducing the likelihood of cascading shutdowns and blackouts due to load restraint on transmission lines and transformers. Amidst this scenario, this paper presents a study of the main topics regarding the use of this new network segmentation philosophy, bringing a practical point of view for the use of this concept at the electrical power system planning. The effect of DC segmentation before a contingency that would initiate major outages in an adapted electrical system model IEEE-14 bus is studied and simulations have been performed with test HVAC systems and segmented by HVDC link. The results have been compared, principally in relation to the voltage bus, reactive power generation, system losses and power flow at the lines, and demonstrated that this new concept improved the grid reliability.
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