Optimal PMU Placement in Multi-configuration Power Distribution Networks

Abstract

Phasor Measurement Unit (PMU) is more and more concerned in power distribution network due to its great benefit. In near future, it may become an essential device in the modern distribution systems. The Optimal PMU Placement (OPP) problem on transmission network for full system observability, was fully done. However, in distribution network the change of configuration in normal operation and contingency modes has a very large impact to find the location of PMUs on network. Some methods have been proposed to solve this problem however the researchers had to spend lot of effort to calculate the system data in all configurations of network. This paper proposes a new solution to find the optimal location of PMUs, which can ensure the full system observability in all operation configurations of distribution network with calculating only based on one configuration. To justify the methodology of solution, the simulations on IEEE RBTS-2 bus and 33 buses distribution systems are presented for experiment. The results of this study show that the proposed solution is effective and feasible.

An Improved OPP Problem Formulation for Distribution Grid Observability

“…However, this paper refrained from presenting the execution times in Tables 4-10 as they are similar to the values of Table 2. 2,3,4,5,6,8,10,11,12,13,14,15,16,17,19,20,21,22,23,24,27,28,29,31,32,33,35,36,37,38,39,40,41,42,43,45,46,47,48,50,51,52,53,55,56,58,59,60,61,63,64,65,66,67,69,…”

“…BSA 62 1,2,5,6,7,8,13,18,19,20,28,29,31,32,35,38,39,42,43,45,46,47,48,50,51,54,55,56,58,59,60,62,63,65,66,67,69,70,71,74,75,76,78,82,83,84,85,87,88,95,96,98,100,103,104,106,107,113,114,195,250,450…”

“…However, the developed OPP formulations for the transmission grids cannot be applied immediately to the distribution grids as they required to be reconfigured abruptly by opening/closing the sectionalizing and the tie switches to reduce power losses, and to improve the node voltage profile, power quality, system security and reliability [24][25][26]. By considering the mentioned notes, the researchers started investigating the OPP problems for the distribution grids in recent years [27][28][29][30][31][32][33]. In [27], the OPP problem was solved for the distribution grids based on a graph-theoretic approach.…”

“…Liu et al [30], illustrated a stochastic optimization approach to solve the PMU deployment problem with minimum investment cost and extended in [31] considering performance degradation of the PMU but the authors did not scan through all possible grid reconfigurations. Another approach considered only one grid reconfiguration by closing all switches and applying constraints of the OPP problem to ensure full grid observability [32]. The influences of the grid reconfiguration were taken into consideration while solving the measurement device placement problem for distribution grid in [33].…”

Optimal PMU placements using sea lion optimization for adaptable distribution system

“…The changes of configuration in the distribution system under normal operation and contingency modes have a huge impact on finding the best location of PMUs. Hence [7] suggested a novel elucidation method to identify the best feasible location for PMUs. This method ensures full framework observability in all distribution network activity operation settings by calculating only one configuration.…”