发电厂高压输电线路线损分析及降损措施

线损是供电企业重要的经营指标.由于发电厂高压输电线路距离短且结构简单,目前对其线路损耗的研究相对较少,但据来自各发电厂的统计数据知,线路损耗已对发电厂的经济效益产生了很大影响.为此,对某火电厂220 kV线路实际系统参数和数据进行研究,运用均方根电流法计算理论线损,并对其和统计线损之间的误差进行分析,提出了降损措施,为发电厂高压输电线路的线损分析和降损提供了借鉴.

Line Loss Analysis and Loss Reduction Measures about High Voltage Transmission Line of Power Plant

The line loss is an important management target of power supply enterprises. As for high voltage transmission line of power plants, because of its short and simple in structure, research in related line loss will be relative. But, according to the statistical data from many power plants, the line loss has had the huge influence to the economic efficiency of power plants. So, this paper studys the actual system parameters and data from line 220 kV of some thermoelectric power station, and used the root-mean-square electric current law to compute theoretical line loss, and compared the theoretical line loss with statistical line loss, and analyzed the error between the two, and gived the loss recluction measures. This will give direct experience for line loss calculation and analysis of short-distance and high-voltage transmission lines in power station,and it also has a strong theoretical and practical significance.