风光新能源接入台区级新型电力系统面临的问题及对策研究

本文在系统梳理和综述国内外相关文献资料的基础上,提出了风光新能源发电、新型电力系统、台区级新型电力系统的基本概念。其次,对台区新型电力系统典型应用新能源小区、景区民宿聚集区、工商业专变三种典型应用场景进行了分析。再次,详细阐述了台区新型电力系统在系统架构、关键技术、核心设备、典型业务、体制机制方面的问题,并提出对应的解决策略。最后,对研究内容进行了总结,并对需进一步研究的内容进行了展望。

Centering Marginalized Voices： The Study of Community Radio in India as an Agent of Social Change

Community Radio is a medium which the different threads mingle together brings different social threads together and weaves a vibrant fabric where all without compromising their original composition. Freedom of speech and expression is the cornerstone of this medium. In India, Community Radio started its journey in 2004, with the purpose of bringing different sections of the society together so that they can share their experiences, fears, and ambition. Social intervention has been one of the primary agenda Community Radio. Through various awareness-raising programs, it aims to bring positive social change in the lives of people residing around its transmission zone. It also aims to include different sub-sections of its community who are often excluded from the mainstream media.

配网避雷器保护失效的场路结合分析

针对10 kV变电台区设备在临近线路遭受雷击后虽然台区避雷器动作但仍发生台区变压器损坏的现象,本文使用场路结合分析的方法,对不同接地方式下的台区雷电冲击过电压进行分析。利用电磁暂态分析软件ATP-EMTP建立了台区雷电冲击电路分析模型,提取了经台区接地引下线进入接地体的冲击电流波形;使用接地分析软件CDEGS建立了台区接地体的场分析模型,得到了台区接地体在冲击电流作用下不同位置的电位瞬态分布情况。文章通过提取台区变压器高压绕组承受冲击电压的幅值,阐明了台区避雷器保护失效的机理,支撑了典型设计中对于台区接地方式的规定。