有源配电网新前推回代潮流计算方法  

Novel Backward/forward Sweep Power Flow Calculation Method for Active Distribution Network

作　　者：董张卓[1] 张倍倍 刘魁 马钰 DONG Zhangzhuo;ZHANG Beibei;LIU Kui;MA Yu(School of Electronic Engineering,Xi’an Shiyou University,Xi’an 710065,China;College of Electrical and Control Engineering,Xi’an University of Science and Technology,Xi’an 710054,China)

机构地区：[1]西安石油大学电子工程学院,西安710065 [2]西安科技大学电气与控制工程学院,西安710054

出　　处：《电力系统及其自动化学报》2019年第12期101-107,共7页Proceedings of the CSU-EPSA

基　　金：陕西省自然科学基础研究计划资助项目(2015JM5211)。

摘　　要：针对有源配电网前推回代潮流计算方法中,采用灵敏度方法计算PV节点无功时计算复杂及计算量大的缺陷,提出了一种在回代过程中对PV节点仅用支路上游节点信息,直接计算PV节点电压相角和无功功率的新前推回代潮流计算方法。在计算PV节点无功时,通过使用单支路模型计算出节点无功调节量,并且引入了无功功率修正系数,保证计算的收敛性。用IEEE33节点配电网算例对提出的方法进行验证,计算结果表明,所提方法克服了前推回代潮流计算过程中,PV节点计算需要建立灵敏度矩阵造成的计算复杂及计算量大的缺陷,方法简捷,计算量小,且能可靠收敛。When the traditional backward/forward sweep algorithm is applied to the calculation of power flow in active distribution network,to overcome the disadvantages of computational complexity and large computational load when calculating the reactive power at PV nodes using the sensitivity method,a novelbackward/forward sweep algorithm is proposed,which can be used to directly calculate the voltage phase angle and reactive power of PV nodes in the backward process by only using the information of upstream nodes on the branch.When calculating the reactive power of PV nodes,the single-branch model is used to calculate the reactive power regulation.In addition,the reactive power correction coefficient is introduced to ensure the convergence of calculations.The test results of an IEEE33-node distribution network verify the validity of the proposed algorithm by programming,and calculation results indicate that the proposed algorithm overcomes the computational complexity and large computational load caused by the establishment of a sensitivity matrix in the calculation of PV nodes when using the traditional backward/forward sweep algorithm.The novel algorithm is simple,fast and with small computational load.Moreover,the iterations can be converged reliably.

关 键 词：分布式电源 前推回代 潮流计算 PV节点 

分 类 号：TM721[电气工程—电力系统及自动化]