基于线性化最优潮流的电网可用输电能力计算  

Available transfer capability calculation based on linearized optimal power flow

作　　者：孙鑫 饶宇飞 肖浩[2] 李朝晖 阮冲 滕卫军 谷青发 SUN Xin;RAO Yufei;XIAO Hao;LI Zhaohui;RUAN Chong;TENG Weijun;GU Qingfa(State Grid Henan Electric Power Research Institute,Zhengzhou 450052,China;State Key Laboratory of Advanced Electromagnetic Engineering and Technology,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]国网河南省电力公司电力科学研究院,河南郑州450052 [2]华中科技大学强电磁工程与新技术国家重点实验室,湖北武汉430074

出　　处：《电力自动化设备》2020年第10期194-199,共6页Electric Power Automation Equipment

基　　金：国家自然科学基金资助项目(51907067);国家电网有限公司科技项目(电化学储能电站群在特高压交直流混联受端电网应用关键技术研究及示范)。

摘　　要：可用输电能力(ATC)是评价互联电网运行安全稳定裕度的重要测度指标。针对交流最优潮流(OPF)模型计算ATC时在收敛性方面的不足,提出一种计及电压和网损的线性潮流方程,在此基础上构造用于ATC计算的OPF计算模型,并通过先估计网损、再求解优化问题的2步求解策略得到ATC的计算结果。IEEE 39节点系统的算例分析验证了所提方法的正确性和有效性。ATC(Available Transfer Capability)is an important measurement index for assessing the opera⁃tion security and stability margins of interconnected power systems.Aiming at the shortage of AC OPF(Optimal Power Flow)model in the aspect of convergence when calculating ATC,a linear power flow equa⁃tion is proposed considering the voltage and power loss,on this basis,an OPF calculation model for ATC calculation is built,and the calculation results of ATC is obtained by two-step solving strategy of firstly estimating power loss and then solving the optimization problem.The case analysis of IEEE 39-bus system verifies the correctness and effectiveness of the proposed method.

关 键 词：可用输电能力 最优潮流 潮流方程线性化 网损估计 输电网 

分 类 号：TM711[电气工程—电力系统及自动化]