摘要
高效准确地识别静态电压稳定分析中极限诱导动态分岔(limits induced dynamic bifurcation,LIDB)、极限诱导静态分岔(limitsinducedstaticbifurcation,LISB)以及鞍结分岔(saddle node bifurcation,SNB)是不易的任务,该文提出一种LIDB,LISB以及SNB的直接识别算法。基于直接计算SNB的边界导数法(boundary derivative direct method,BDDM)收敛过程逼近平衡解流形的特性,给出预测越限参数及直接定位贴合实际系统运行状态的LIDB与LISB的数学模型及LIDB/LISB的区分逻辑。所构建的算法不存在BDDM、崩溃点法等直接类方法无法计算LIDB/LISB的关键问题,且可避免原对偶内点优化算法丢失LIDB信息和触发的限制可能与标准连续潮流(continuation power flow,CPF)不一致的弱点。相较于CPF,所提算法避免了非关键运行点的计算,降低了计算量。最后,采用IEEE14以及IEEE118标准节点系统进行验证,证明所提算法的准确性及高效性。
Efficient and accurate identification of limit induced dynamic bifurcations(LIDBs), limit induced static bifurcations(LISB), and saddle node bifurcation(SNB) in steady-state voltage stability analysis is not an easy task;the paper proposed an algorithm for locating the SNB, LIDBs and LISB in one go. Boundary derivative direct method(BDDM) is a novel method for directly calculating the SNB. Based on the characteristic of BDDM that the convergent procedure approaches the equilibrium manifold, the calculation logic of predicting the limit-reached parameter and the mathematic model of directly computing the LIDBs and LISB in accordance with actual power system were proposed. The algorithm does not have the key problem of BDDM, POC and other similar methods that they cannot calculate LISB and the deficiency of primal-dual interior point algorithm that it misses information of LIDB and may trigger inconsistent limitations with continuation power flow(CPF). Compared with CPF, the proposed algorithm avoids the calculation of non-critical operation points, reducing the amount of calculation. Case study in IEEE14 and IEEE118 bus standard systems verifies the feasibility and efficiency of the algorithm.
作者
万凯遥
姜彤
冯卓诚
陈昌
WAN Kaiyao;JIANG Tong;FENG Zhuocheng;CHEN Chang(State Key Laboratory of Alternative Electrical Power System With Renewable Energy Sources(North China Electric Power University),Changping District,Beijing 102206,China)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2020年第20期6548-6556,共9页
Proceedings of the CSEE
基金
留学基金委留学经费的资助。
关键词
静态电压稳定
鞍结分岔
极限诱导分岔
直接法
连续潮流
steady-state voltage stability
saddle node bifurcation
limit induced bifurcation
direct method
continuation power flow
