我国大规模可再生能源基地与技术的发展研究

从可持续发展看,化石能源终将耗竭.二十一世纪上半叶,能源结构的调整过程已经开始,需要发展大规模非水能的可再生能源,主要是风能、太阳能与生物质能,并大力推进荒漠地区基地和氢能的发展.中国科学院学部组织有关院士及专家进行了我国大规模可再生能源基地与技术的发展研究.本文简要叙述了有关结论与建议.

A development study for Chinese large scale renewable energy source base and technology

Based on field-circuit equivalence, using hybrid finite element-analytical approach, the mutual capacitance and mutual inductance of a 10kV impulse voltage divider are extracted. By analyzing the extracted parameters, the distribution pattern of mutual capacitance is discussed. The Milne method is used to analyze an equivalent circuit, in which the mutual capacitance and inductance are used as circuit parameters and as a result the simulation of a virtual divider is accomplished. To achieve the consistence between simulation and measuring results, a 10kV impulse voltage system is established and calibrated by National Institute of Metrology. According to the step impulse test, the partial response time is 2.73ns, the overshoot is 10.33% and the stable time is 20.46ns. The expanded uncertainty of the impulse peak voltage is 0.192%, the expanded uncertainty of front time is 1.5%, and the expanded uncertainty of half- wave time is 1.58%, which is qualified for electromagnetism compatibility.