摘要
由于吉林省地区冬季负荷明显高于夏季负荷,为了提高电网在冬季的输送能力,同时保证输电线路本体温度在国家标准允许范围内,仿真研究了应用于10～220 kV电网的5种规格的导线载流量与环境温度、导线本体温度三者之间的关系,得出当环境温度低于-10℃、导线温度低于+70℃时,5种导线可以提高载流量10％以上,对于挖掘吉林省10～220 kV电网冬季隐含的输电能力、延长线路的服役期有重要意义。
The load in winter is obviously higher than in summer of Jilin province. For raising transport capability of electric power grids, with guaranting noumenon temperature of transmission lines under limit of national standard, the conductor current carrying capability is simulated of 5 type conductors in 10-220 kV grids. The result shows that the conductor current carrying capability can be raising over 10 per cent when environment temperature is lower than -10℃, and the conductor temperature is lower than ＋ 70 ℃. The important significance of the result means prolonging service for lines and promoting latent transporting ability of 10-220 kV grids in winter.
出处
《吉林电力》
2006年第4期5-7,共3页
Jilin Electric Power
关键词
输送能力
电力系统
温度
导线
载流量
transport capability
electric power grids
temperature
conductor
current carrying capability
