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.
出处
《电力自动化设备》
EI
CSCD
北大核心
2014年第4期128-132,共5页
Electric Power Automation Equipment
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
approximate linear programming
weak grid
PV power station
power penetration limit
stability
