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An Economic Benefit Evaluation Model and its Application for Optimizing Transmission Capacity of Multinational Interconnections

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CSEE Journal of Power and energy Systems 2018年第4期4卷 444-451页

作者： Xiaojun Wang Ruimin Jiang Pei Zhang Yunfei Mu Maosheng Ding School of Electrical Engineering Beijing Jiaotong UniversityBeijing 100044China School of Electrical Engineering and Automation Tianjin UniversityTianjin 300072China State Grid Ningxia Electric Power Company Ningxia 750001China

Multinational power grid interconnections play a critical part in supporting the vision of global energy *** the early stages of the global energy internet,the value proposition of multinational interconnections should be carefully investigated in order to stimulate the activities for associated countries in such potential *** paper proposes a new e conomic benefit evaluation model which is quantified by using a chronological production cost simulation *** economic benefit model comprehensively considered investment costs and the benefits of the decrease of load payments and the increase of net generation revenue due to a transmission project interconnected with different *** economic benefit model can assist to quantitatively determine the optimal transmission capacity for multinational interconnections to achieve maximum economic benefits as a *** the case study,the economic benefit of an interconnected system of western China and the Gulf States is assessed by using the method proposed in this *** the optimal interconnection capacity with maximum benefit is *** case study shows that the proposed method can be used for economic benefit assessment and is of great significance to the multinational and intercontinental transmission interconnections.

关键词： Economic benefits global energy internet production cost simulation transmission planning

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Recyclable insulation material for HVDC cables in global energy Interconnection

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global energy Interconnection 2018年第4期1卷 520-526页

作者： Yao Zhou Chao Yuan Qi Li Qing Wang Jinliang He State Key Laboratory of Power Systems Department of Electrical Engineering Tsinghua University Department of Materials Science and Engineering The Pennsylvania State University

With the development of modern power systems, especially that of the global energy internet, high-voltage, direct current(HVDC) cable power transmission will play an important role in the future. The key problem of HVDC cable power transmission is the need for novel cable insulation materials that have high performance, recyclability, and higher working temperature to replace traditional crosslinked polyethylene. This paper investigates the thermal and electrical properties of polypropylene(PP)/Al2 O3 nanocomposites as a potential recyclable HVDC cable insulation material. The developed nanocomposites exhibit excellent thermal and electrical properties with the introduction of Al2 O3 nanoparticles. Particularly, the space charge accumulation is greatly suppressed.

关键词： global energy internet Power transmission HVDC cables Eco-friendly insulation material

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