摘要
常规潮流算法无法保证任意情况下均能可靠收敛。该文提出潮流估算的新概念,对潮流估算模型及实现方法开展研究。提出一种潮流估算模型,采用交直流解耦、有无功解耦策略,设计一种具有虚拟中点的支路模型,基于虚拟中点功率构建潮流估算方程并给出其求解方法,通过有功和无功的自动调整措施进一步增强潮流估算模型的鲁棒性。采用实际算例对潮流估算结果进行误差量化分析和鲁棒性分析,验证该潮流估算模型的有效性和可行性。潮流估算与辅助调整程序现已开发成熟,能够适用于实际的电力系统。
It is difficult to assure the reliable convergence using conventional power flow algorithms. A new concept of approximate power flow （APF） was proposed in this paper. In the new approximate power flow model, AC/DC decoupling and active/reactive power decoupling strategy was adopted, and a branch model with virtual midpoint is the key foundation of the whole research. Based on the virtual midpoint power, approximate power flow equation was constructed and its solving method was introduced. Active and reactive power automatic adjustment measures were also used to improve robustness. The effectiveness and feasibility of this approximate power flow model was proved by the error and robustness analysis for practical examples. The APF program has been developed, and can be applied to the actual large-scale power grid.
作者
王虹富
陶向红
李柏青
穆世霞
王毅
WANG Hongfu;TAO Xianghong;LI Baiqing;MU Shixia;WANG Yi(State Key Laboratory of Power Grid Safety and Energy Conservation（China Electric Power Research Institute）,Haidian District,Beijing 100192,China)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2018年第21期6305-6313,共9页
Proceedings of the CSEE
关键词
潮流计算
潮流估算
虚拟中点功率
收敛性
鲁棒性
自动调整
power flow calculation
approximate power flow
virtual midpoint power
convergence
robustness
automatic adjustment
