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大力开发和利用可再生能源是我国能源可持续发展和经济可持续发展战略的重要组成部分。正在建设中的酒泉至湖南±800 kV特高压直流工程额定输送容量800万kW,是西北集风、火、太阳能电源协同外送的大型直流输电工程。如何结合送端电源外送特性和受端负荷消纳特性,达到电力输送、消纳和经济效益最优化,需要对特高压直流输送电力的功率运行曲线进行研究。该文对送端直流可能的输送方式进行了分析研究,对受端如何消纳以及经济效益进行了分析探讨,提出了研究此类问题的思路和方法,为工程运行提供了技术参考,对其他工程也有重要的参考价值。
Vigorously developing and utilizing renewable energy is an important part of China’s strategy for sustainable energy development and economic sustainable development. Jiuquan under construction to Hunan ± 800 kV UHVDC rated transmission capacity of 8 million kW, is the Northwest wind, fire, solar power supply large-scale DC transmission project. It is necessary to study the power running curve of the UHV DC power transmission with how to combine the power transmission characteristics of the sending end and the characteristics of receiving and receiving end load to achieve the optimization of power transmission, consumption and economic benefits. This paper analyzes the possible transmission modes of sending DC, analyzes and discusses how to absorb the receiving ends and the economic benefits, puts forward the ideas and methods to study such problems, provides a technical reference for the operation of the project, Engineering also has important reference value.