Construction of Smart Grid at Information Age

Abstract

Since a couple of years ago, the topic smart grid has been discussed worldwidely by power companies, research institutes as well as communication companies.Smart grid was first proposed to accommodate renewable energy generation by utilizing the latest information and communication technologies.Then, the concept'smart'was expanded from smart measurement system, demand-side response, distribution automation to transmission grid intelligence.Smart grid becomes the trend of power grid development.By applying information technologies in the conventional power grid, smart grid improves the utilization rate of energy and power asset management.The energy saving effects of smart grid can help in emission control and global warming.A mature smart grid has two-way real-time high-speed communication channels in all sections of the power grid, and it integrates advanced technologies, such as, control, IT and management.The system is a self-healing sytem.Moreover, the power generation, distribution and utilization in smart grid can be optimized scientifically and systematically.In this paper, what is smart grid, the development and the current research of smart grid will be presented.The objectives, key technologies and potential obstacles for constructing a smart grid are discussed.Some issues relating to smart grid on power transmission and distribution as well as consumer side are also discussed.

為了迎接電力行業由工業化向信息化轉變的新挑戰,提高能源資產利用率,應對全球環境能源危機,全球電力企業和研究機構提出了電力行業的可持續發展方向——智能電網。智能電網是一個以電力系統為對象,結合新型的控制技術、信息技術和管理技術,實現從輸配電到用戶所有環節的智能交流,能夠科學系統地優化電力生產、傳輸和使用的自愈電網。文章介紹了智能電網的特征、發展和研究現狀,分析了智能電網建設的目標、所需的先進技術和可能遇到的阻礙,并分別討論了建設用戶側和輸配電網側智能電網的相關問題。