运用GPRS数据采集系统的配电网线损计算

Line Loss Calculation in Distribution Network Based on GPRS Data Acquisition System

配电网处于电力网络的末端,直接与大量用户相连接,线路总长度长,配电变压器数量多,在输送、分配电能过程中伴随着大量损耗。结合通用分组无线业务(general packet radio service,GPRS)数据采集系统,对已有回路电流法进行改进,实现只利用较少数据完成快捷、高效、满足工程精度要求的配电网理论线损计算。在改进已有计算方法的基础上,实现线损的多角度统计,为后续降损措施的提出和改进提供较全面的数据支撑。通过实例验证该方法的有效性和高精度。

Distribution network is located at the end of power network, which directly connects with many customers. Much losses will be produced during transferring and distributing electric energy because the total line length is long and there are many distribution transformers. This paper focuses on line loss calculation in distribution network based on improvement on the existed loop current method combining with general packet radio service （GPRS） data acquisition system. The method proposed can do line loss calculation in theory with data as less as possible, and can achieve high efficiency and high engineering accuracy. At the same time, the method can realize line loss statistics from different point of view based on the improved calculation method, which provides a comprehensive data support for the proposal and improvement of measures for reducing line losses in the future. An example is used to verify the validity and high accuracy of the method.