摘要
输电线路覆冰是我国常见的自然灾害,危害极大,而现有融冰方法均存在各自的局限性。对此,提出一种基于串联谐振原理的工频谐振融冰方法,并分析了此方法的融冰原理及融冰接线方式;计算了典型导线的工频谐振融冰电流并同直流融冰法作了对比分析;定量分析了融冰中出现的谐振电压并提出电容器组串联均压和改变融冰接线方式降压的办法;最后简要介绍工频谐振融冰装置关键设备的构成。研究结果表明:与直流融冰相比,本方法融冰效率更高;通过控制融冰线路长度和融冰源接入方式可使融冰谐振电压处于线路绝缘水平范围内;融冰电源容量小,构造简单,可直接由系统引入,融冰成本低廉。
Transmission line icing is a common natural disaster in China with great, while existing ice melting methods have their limitations. In light of this, a frequency resonant deicing method based on the principle of series resonance is proposed. The principle of this method of melting ice and deicing wiring were analyzed; then a comparative analysis between the frequency resonant deicing method and DC shorted deicing method was made after the deicing current of typical wire was calculated; equalizing capacitor in series and that changing deicing wiring to reduce the voltage were proposed based on the quantitative analysis of resonant voltage; finally, a brief introduction was made about the device configuration of frequency resonant deicing. The research result shows that this method not only has good feasibility and higher ice-melting efficiency compared with DC deicing while with resonant voltage in the range of line insulation level through controlling the length of deicing line and introduced deicing power, but also has the advantages of low deicing costs because its source capacity is small with simple structure and can be introduced directly from the power system.
出处
《电瓷避雷器》
CAS
北大核心
2016年第4期1-6,共6页
Insulators and Surge Arresters
基金
国家自然科学基金(编号:51407013)
湖南省高等学校创新平台基金资助项目(编号:14K001)
关键词
工频谐振融冰
融冰接线方式
融冰电流
谐振电压
融冰装置
frequency resonant deicing
deicingdevicewiring
deicing current
resonant voltage
deicing
