大型互联电网最大输电能力的自动求解算法  

Algorithm Research on Automatic Calculation of Large-Scale Interconnected Power System's Total Transfer Capability

作　　者：赵敏[1] 安宁[1] 施浩波[1] 李芳[1] 

机构地区：[1]中国电力科学研究院,北京市海淀区100192

出　　处：《电网技术》2012年第11期179-183,共5页Power System Technology

基　　金：国家863高技术基金项目(2011AA05A105)~~

摘　　要：研究了制约最大输电能力自动化计算的主要问题,即系统过渡过程中的潮流收敛性问题。针对收敛性差的网络,提出了基于时域仿真的病态潮流算法。该算法从时域仿真计算的角度,将一系列求解潮流非线性方程组的问题,转换为在较小的缓慢扰动下的时域仿真求取系统稳定运行状态点的问题。通过对全国联网的数据进行仿真计算,验证了所提算法的有效性。在此基础上对自动计算大型互联电网最大输电能力的算法进行了详细设计。结合实际电网调度运行部门计算考虑暂态稳定约束的最大输电能力的流程,将所提算法在电力系统分析综合程序(PSASP)中进行了实现。Main problem restricting the automatic calculation of total transfer capability,namely the convergence property of power flow during power system transition process, is researched.In allusion to the network with weak convergence property a time-domain simulation based ill-conditioned power flow algorithm is proposed.From the viewpoint of time-domain simulation,the proposed algorithm turns a series of problems to solve nonlinear power flow equations into the time-domain simulation problem under smaller and slower perturbations to obtain steady-state operation point.Through the simulation computation based on the data of nation-wide interconnected power grid the availability of the proposed method is verified. On this basis,the detailed design of the algorithm for automatic calculation of total transfer capability of large-scale interconnected power grid is performed.Combining with the calculation process of total transfer capability by actual power grid dispatching department,in which the transient stability constraints are taken into account,the implementation of the proposed algorithm in Power System Analysis Software Package（PSASP） is completed.

关 键 词：潮流计算 暂态稳定 最大输电能力 时域仿真 

分 类 号：TM744[电气工程—电力系统及自动化]