Open AccessEffective steady-state security regions of power systems considering voltage magnitude
Author(s) -
Yu Zhou,
Xiu Yang,
Ming Yang,
Yongfeng Zhu,
C. Wang,
Yin Bo,
Pan-Pan Du
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/354/1/012111
Subject(s) - electric power system , ac power , computer science , voltage , mathematical optimization , control theory (sociology) , linear programming , state variable , power (physics) , control variable , economic dispatch , engineering , control (management) , mathematics , electrical engineering , physics , quantum mechanics , artificial intelligence , machine learning , thermodynamics
With high-level variable renewable energy integrating into power systems, the uncertainty significant challenges to the real-time dispatch (RTD). Meanwhile, the influence of voltage magnitude and reactive power on RTD always were ignored. Based on effective steady-state security regions of power systems and linear power flow model, a real-time dispatching method considering voltage magnitude and reactive power is proposed in this paper. This model has two goals, one is the security goal, the other is the economic goal, and priority of security objectives is higher than economy. Unlike previous real-time dispatch methods, all of the operation base point, reactive power output and participation factors of automatic generation control (AGC) generators are chosen as decision variables in the model. In order to ensure computational efficiency, the model is finally transformed into a deterministic linear programming (LP) problem by robust optimization and other methods. The accuracy and computational efficiency of the method are illustrated by modified IEEE 9-bus system and IEEE 118-bus system.