光伏电站中电缆长度统计的研究

RESEARCH ON STATISTICS OF CABLE LENGTH IN PV POWER STATION

由于光伏电站中使用的电缆种类多且数量多,电缆长度统计成为光伏电站建设初期设计阶段中需要设计人员投入大量精力的环节。提出了一种统计光伏电站中采用的电缆长度的数学模型,可简便、快速计算出实际敷设的电缆长度。该电缆单位长度数学模型引入了矢量直角三角形的概念,通过统计不同斜边夹角下矢量直角三角形中2条直角边的长度和,得出直斜比的值,最终可得到实际光伏电站工程中任意2个设备间实际敷设的电缆的长度;且无论光伏电站总体布置中的光伏场区布置方式是否有方位角,只要确定了斜边夹角,即可通过该数学模型确定2个设备间实际敷设电缆的长度。以实际应用验证了该数学模型的可行性,以期在工程的可行性研究和初步设计阶段帮助设计人员提高设计效率,同时也可供电气设计人员参考借鉴。

Due to the variety and quantity of cables used in PV power station,the statistics of cable length has become a link in the initial design stage of PV power station construction,which requires designers to invest a lot of work time.A mathematical model for calculating the cable length used in PV power station is proposed,which can calculate the actual cable length easily and quickly.The mathematical model of unit length of cable introduces the concept of vector right triangle.By counting the length sum of two right angles in the vector right triangle under different inclined angles of hypotenuse,the value of straight to inclined ratio is obtained.Finally,the actual cable length between any two devices in the actual PV power station project can be obtained.And no matter whether the layout of PV field in the general layout of PV power station has azimuth or not,as long as the included angle of hypotenuse is determined,the actual cable length between two devices can be determined through the mathematical model.Through the application,the mathematical model is feasible,in order to help designers improve the design efficiency in the stage of engineering feasibility study and preliminary design,and also provide reference for electrical designers.