Multi-Objective Approach for Power Quality Monitor Allocation With Symmetry in Short-Duration Voltage Variations

Power Quality Monitors Displacement Based on Voltage Sags Propagation Mechanism and Grid Reliability Indexes

“…In order to achieve this goal, the physical behavior of voltage sags must be investigated not only in a rational (analytical) way but also in an intuitive way. Occasionally, several investigation techniques can be found in the literature-for example, the voltage sag matrix (only for symmetrical faults) in [15,37,38,40,47] or the voltage-duration plane in [43,45]. In this paper, a full propagation path (including both TSO and DSO grids) will be monitored in the test grid-the chosen fragment of the Lithuanian power system which is a part of the post-Soviet BRELL ring.…”

“…However, it is known a priori that the implementation of the above-mentioned task will not solve the fundamental economic problem to an adequate degree, i.e., will not The works can be strictly classified into theoretical and practical [5]. This paper belongs to the group of practical works; and for its scope, the most important papers to cite are [15,[35][36][37][38][39][40][41][42][43][44][45], i.e., those which are in the overlapping area of the Venn diagram (Figure 1). The theoretical papers [35][36][37][38][39][40][41][42] validate their approaches on test systems (IEEE schemes are the most commonly used; the Brazilian, CIGRÉ, and EPRI schemes are used occasionally), meanwhile in the practical studies [14,15,[43][44][45], PQ monitoring campaigns are immediately begun without posterior self-reflection and criticism.…”

“…The idea of a voltage sag matrix has been inherited from [15,37,38,40]; however, only the case of a symmetrical fault has been found. In this paper, a voltage sag matrix will be introduced for asymmetrical faults too, i.e., two-phase-to-ground (Section 3.1.2), two-phase (Section 3.1.3), and single-phase (Section 3.1.4).…”

“…This paper belongs to the group of practical works; and for its scope, the most important papers to cite are [15,[35][36][37][38][39][40][41][42][43][44][45], i.e., those which are in the overlapping area of the Venn diagram (Figure 1). The theoretical papers [35][36][37][38][39][40][41][42] validate their approaches on test systems (IEEE schemes are the most commonly used; the Brazilian, CIGRÉ, and EPRI schemes are used occasionally), meanwhile in the practical studies [14,15,[43][44][45], PQ monitoring campaigns are immediately begun without posterior self-reflection and criticism. The approaches of practical papers are significantly simpler than those of the theoretical papers; on the other hand, theoretical simulations are very limited and are not well prepared for implementation in practice.…”

Power Quality Monitor Allocation Based on Singular Value Decomposition and Genetic Algorithm

“…More recently, some works are focused on DSs (Melo et al 2019;Kouzelis et al 2015;Bottura et al 2019;Lucimario et al 2016;Shaaban et al 2019;Dehnavi et al 2019;Kempner et al 2014;Gomes et al 2016). In addition, most of the researches consider the allocation only for monitoring short time voltage variations (Eldery et al 2006;Reis et al 2008;Almeida and Kagan 2011b;Ketabi et al 2012;Kazemi et al 2013;Wong et al 2014;Kempner et al 2014;Gomes et al 2016;Ibrahim et al 2014;Martins et al 2019) which results in a low number of PQM to be installed, insufficient to make the grid completely observable during normal operation. Moreover, it is assumed that the measuring equipment has a sufficient number of channels to measure all current branches connected to a specified bus (Eldery et al 2006;Reis et al 2008;Ketabi et al 2012), requiring expensive meters (with more than one three-phase current measuring channel).…”