Tie-Line Bias Control Applicability to Load Frequency Control for Multi-Area Interconnected Power Systems of Complex Topology

Energies

Kaifeng Zhang¹  Chunyu Chen¹  Kun Yuan¹  Xianliang Teng² 

[1] Key Laboratory of Measurement and Control of Complex Systems of Engineering, Ministry of Education, School of Automation, Southeast University, Nanjing 210096, China;State Key Laboratory of Smart Grid Protection and Control, NARI Group Corporation, State Grid Electric Power Research Institute, Nanjing 211106, China;

关键词: load frequency control;    tie-line bias control (TBC) applicability;    ring network;    topology;   

DOI  :  10.3390/en10010078

来源: DOAJ

【 摘 要 】

The tie-line bias control (TBC) method has been widely used in the load frequency control (LFC) of multi-area interconnected systems. However, it should be questioned whether the conventional TBC can still apply to LFC when considering the complication of structures of power systems. LFC, in essence, is to stabilize system frequency/tie-line power by controlling controlled outputs’ area control error (ACE). In this paper, relations between LFC control variables and controlled outputs are expressed as a system of equations, based on which an exemplary ring network is studied. Sufficient and necessary conditions for TBC applicability is presented, and a novel LFC mode is proposed for a general ring network where TBC cannot work. Finally, TBC applicability to multi-area systems with general topology is studied, and a general LFC mode is proposed for systems where TBC is not definitely applicable, thus rendering routines that may guide LFC design of future power systems with more complex topologies.

【 授权许可】

Unknown