Open AccessOptimal configuration of voltage sag monitors considering sensitive areas
Author(s) -
Haiyong Liu,
Baihua Dai,
Hongfang Zhu
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2005/1/012243
Subject(s) - voltage sag , observability , redundancy (engineering) , reliability engineering , phasor measurement unit , reliability (semiconductor) , computer science , constraint (computer aided design) , phasor , voltage , control theory (sociology) , real time computing , engineering , electric power system , power (physics) , power quality , electrical engineering , mathematics , mechanical engineering , physics , control (management) , quantum mechanics , artificial intelligence
Voltage sags are unavoidable and cause serious harm to sensitive loads. Reasonable configuration of limited monitors can reduce monitoring costs and provide data support for sag management and reduction of sag hazards. Therefore, the optimal configuration of sag monitors is of great significance. Aiming at the traditional method that ignores the inconsistency of the degree of sag damage in different areas, an optimal configuration model of sag monitor considering the reliability of monitoring in sag sensitive areas and the location of phasor measurement unit (PMU) is proposed. The model takes sag observability as a constraint, takes the smallest number of monitors and covers the widest range of sag sensitive areas as the goal, and further configures PMU to assist in monitoring voltage sags. In addition, the Zeroin method is proposed to improve the accuracy of the exposed area calculation. The IEEE-30 system simulation shows that the proposed method can ensure the minimum number of monitor and high redundancy coverage of sensitive loads, ensuring its economic benefits. The proposed method overcomes the difficulty of balancing the monitoring cost with the monitoring capability of sensitive areas.