摘要
为改善传统灵敏度对潮流的计算分析,在PQ,PV,Vθ三类节点类型基础上,提出了基于节点类型扩展潮流计算的灵敏度计算方法.采用PQV,Qθ,QV,PQVθ等扩展节点类型推导了在节点类型扩展潮流计算的修正方程基础上的相关常用的灵敏度计算公式.算例分析结果表明:在潮流计算中含有新的扩展节点类型时,常规灵敏度分析方法的准确性明显下降,而使用基于节点类型扩展潮流计算的灵敏度分析方法仍能获得很好的精度.算例验证了所推导的计算公式的合理性.提出的基于节点类型扩展潮流的灵敏度计算方法可以提高在大规模系统中的准确性,能够更好地模拟潮流变化的规律.
To improve conventional sensitivity factor analysis for load flow calculation that only considers three bus types： PQ,PV and Vθ,this paper proposes a sensitivity factor analysis method for bus type extended load flow calculation. By considering PQV,Qθ,QV,PQVθ extended bus types, this paper derives the sensitivity factor calculation formulas based on the correct equations of bus type extended load flow. Numerical tests given in this paper show that,when new bus types are involved in a load flow calculation,the precision of conventional sensitivity analysis method reduces obviously,whereas the proposed method can still obtain a better result. It also demonstrates the effectiveness of the derived sensitivity analysis method. By applying the proposed method,it can increase the accuracy in large-scale networks and better simulate the change of load flow.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2017年第3期35-39,共5页
Journal of Harbin Institute of Technology
基金
国家重点基础研究发展计划(2012CB027082)
关键词
电力系统
灵敏度
潮流计算
节点类型
潮流调整
power systems
sensitivity factor
load flow calculation
bus type
load flow adjustment
