基于近似线性规划法的弱电网光伏穿透功率极限计算  

Power penetration limit calculation based on approximate linear programming for PV power station in weak grid

作　　者：徐岩[1] 闫少波[1] 史迪锋 

机构地区：[1]华北电力大学新能源电力系统国家重点实验室,河北保定071003

出　　处：《电力自动化设备》2014年第4期128-132,共5页Electric Power Automation Equipment

摘　　要：传统动态仿真人工修正法确定光伏电站极限容量时,收敛速度慢,仿真工作量大,计算结果精确度低。采用近似线性规划法对传统方法进行改进和优化,将非线性目标函数和约束条件采用一阶泰勒公式进行线性变换,用近似线性解代替非线性解,逐渐逼近光伏电站穿透功率极限。在Digsilent软件中建立IEEE 13节点典型弱电网模型,仿真结果验证了近似线性规划法的快速性、高准确性和高效性。When traditional dynamic simulation manual correction method is used to determine the power penetration limit of PV（PhotoVoltaic） power station,it shows slow convergence speed,heavy workload and low of calculation inaccuracy.The approximate linear programming method is adopted to improve and optimize it,which converters the nonlinear objective function and constraints into linear ones by the firstorder Taylor formula,substitutes the approximate linear solution for the nonlinear one and approaches gradually the power penetration limit of PV power station.IEEE 13-bus typical weak grid model is built in Digsilent and the rapidity,high accuracy and high efficiency of the proposed method are verified by the simulative results.

关 键 词：近似线性规划 弱电网 光伏电站 穿透功率极限 稳定性 

分 类 号：TM615[电气工程—电力系统及自动化]