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高压输电线路等值物理模型参数和高海拔区域电晕损耗分析
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作者 王邦林 沙桐 《价值工程》 2023年第24期129-131,共3页
电晕的危害在于电能损耗的加大和电磁干扰。如果不对输电导线的电晕放电进行控制,所带来的资源浪费、经济损失和对通信的干扰影响较大,并且加大了电能传输过程中的碳排放。本文在高压输电导线等值电路的基础上,分析产生损耗的原因;在导... 电晕的危害在于电能损耗的加大和电磁干扰。如果不对输电导线的电晕放电进行控制,所带来的资源浪费、经济损失和对通信的干扰影响较大,并且加大了电能传输过程中的碳排放。本文在高压输电导线等值电路的基础上,分析产生损耗的原因;在导线材料、导线型号、布置方式、导线分裂数和电压等级相关因素确定的前提下,工程实践对超高压输电导线电晕的控制主要就在于对导线表面粗糙度的控制;并提出了高海拔区域超高压输电导线电晕质量的控制原理和实现方法。 展开更多
关键词 等值电路 电能损耗 电晕临界电压 导线粗糙度
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Experimental study of free abrasive wire sawing by using multi-strands wire
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作者 Yao Chunyan Wang Jinsheng +2 位作者 Peng Wei Jin Xin Chen Shijie 《Engineering Sciences》 EI 2013年第6期80-84,共5页
Grains in the slurry can be brought into cutting zone by steel wire with a certain speed to achieve the purpose of removing the workpiece material in the free abrasive wire sawing machining. Because its own of multi- ... Grains in the slurry can be brought into cutting zone by steel wire with a certain speed to achieve the purpose of removing the workpiece material in the free abrasive wire sawing machining. Because its own of multi- strands characteristics, we use it to replace the steel wire to do slicing experiment. In this paper, multi-strands wire is made by seven metal wires and has many grooves on its surface. Compared with steel wire, it can carry more grains into cutting zone which is conducive to improving the slicing efficiency. We do some comparative slic- ing experimcnts by applying multi-strands wire (~b0.25 mm) and steel wire (~b0.25 mm) to cut optical glass (K9). The results show that slicing efficiency and the surface roughness of the workpiece sliced by using multi-strands wire are better than that by using steel wire. but the kerf width of the former is wider than that of the latter in the same experimental conditions. 展开更多
关键词 wire saw free abrasive machining slicing efficiency
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