scholarly journals Optimal PMU Placement Technique to Maximize Measurement Redundancy Based on Closed Neighbourhood Search

Energies ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4782
Author(s):  
Lourdusamy Ramya Hyacinth ◽  
Venugopal Gomathi
Keyword(s):  
Power System ◽  
Test System ◽  
Optimal Placement ◽  
Dc Microgrid ◽  
Observability Index ◽  
Minimum Number ◽  
Neighbourhood Search ◽  
Measurement Units ◽  
Pmu Placement ◽  
Redundancy Index

This paper proposes a method for the optimal placement of phasor measurement units (PMUs) for the complete observability of a power system based on the degree of the neighbourhood vertices. A three-stage algorithm is used to determine the minimum number of PMUs needed to make the system observable. The key objective of the proposed methodology is to minimize the total number of PMUs to completely observe a power system network and thereby minimize the installation cost. In addition, the proposed technique also focuses on improving the measurement redundancy. The proposed method is applied on standard IEEE 14-bus, IEEE 24-bus, IEEE 30-bus, IEEE 57-bus and IEEE 118-bus test systems and a hybrid AC/DC microgrid test system. The results obtained are compared with already existing methods in terms of the Bus Observability Index (BOI) and System Observability Redundancy Index (SORI). The results show that the proposed method is simple to implement and provides better placement locations for effective monitoring compared to other existing methods.

scholarly journals OPTIMAL PLACEMENT OF PHASOR MEASUREMENT UNITS FOR POWER SYSTEM OBSERVABILITY

2013 ◽  
pp. 266-269
Author(s):  
RAJPAL SAINI ◽  
MANJU MAM ◽  
MANISH KR. SAINI
Keyword(s):  
Fault Diagnosis ◽  
Power System ◽  
State Estimation ◽  
Phasor Measurement Units ◽  
Optimal Placement ◽  
Linear Algorithm ◽  
Normal Operating ◽  
Phasor Measurement ◽  
Minimum Number ◽  
Measurement Units

This paper present a method to find minimum number of phasor measurement units (PMUs) for complete observability of power system network for normal operating conditions.A linear algorithm is used to determine the minimum number of PMUs needed to make the system observable. For state estimation and fault diagnosis in power system synchronized snapshot of whole system must be necessary. The proposed method is used to benchmark the optimal PMUs placement solution for the IEEE 14-bus, IEEE 18- bus, IEEE 30-bus and IEEE 57-bus test systems.

scholarly journals Optimal PMU Placement with Uncertainty Using Pareto Method

2012 ◽  
Vol 2012 ◽  
pp. 1-14 ◽  
Author(s):  
A. Ketabi ◽  
S. M. Nosratabadi ◽  
M. R. Sheibani
Keyword(s):  
State Estimation ◽  
Test System ◽  
Optimal Placement ◽  
Pareto Optimum ◽  
De Algorithm ◽  
Suggested Strategy ◽  
Measurement Units ◽  
Pmu Placement ◽  
Pareto Method ◽  
Value Decomposition

This paper proposes a method for optimal placement of Phasor Measurement Units (PMUs) in state estimation considering uncertainty. State estimation has first been turned into an optimization exercise in which the objective function is selected to be the number of unobservable buses which is determined based on Singular Value Decomposition (SVD). For the normal condition, Differential Evolution (DE) algorithm is used to find the optimal placement of PMUs. By considering uncertainty, a multiobjective optimization exercise is hence formulated. To achieve this, DE algorithm based on Pareto optimum method has been proposed here. The suggested strategy is applied on the IEEE 30-bus test system in several case studies to evaluate the optimal PMUs placement.

scholarly journals OPTIMAL PLACEMENT OF PHASOR MEASUREMENT UNITS FOR POWER SYSTEM OBSERVABILITY WITHOUT CONSIDERING ZERO INJECTION BUSES

2012 ◽  
pp. 117-121
Author(s):  
RAJPAL SAINI ◽  
MANJU mam
Keyword(s):  
Fault Diagnosis ◽  
Power System ◽  
State Estimation ◽  
Phasor Measurement Units ◽  
Operating Conditions ◽  
Optimal Placement ◽  
Linear Algorithm ◽  
Phasor Measurement ◽  
Minimum Number ◽  
Measurement Units

This paper present a method to find minimum number of phasor measurement units (PMUs) for complete observability of power system network for normal operating conditions .A linear algorithm is used to determine the minimum number of PMUs needed to make the system observable without considering zero injection buses. For state estimation and fault diagnosis in power system synchronized snapshot of whole system must be necessary. The proposed method is used to benchmark the optimal PMUs placement solution for the IEEE 14-bus, IEEE 18-bus, IEEE 24-bus, IEEE 30-bus and IEEE 57-bus test systems.

scholarly journals A comprehensive review for optimal placement of phasor measurement unit for network observability

2020 ◽  
Vol 19 (1) ◽  
pp. 301
Author(s):  
Maveeya Baba ◽  
Nursyarizal .B.M. Nor ◽  
Taib.B. Ibrahim ◽  
M.Aman. Sheikh
Keyword(s):  
Real Time ◽  
Optimal Placement ◽  
Measurement Unit ◽  
Complete Network ◽  
Real Time Measurement ◽  
Phasor Measurement ◽  
Measurement Units ◽  
Pmu Placement ◽  
Future Work ◽  
Installation Cost

Real time synchronized phasor measurement in power network is obtained by the improvement in monitoring, control and, protection of the power system. In recent time, the installation ratio of Phasor Measurement Units (PMUs) is constantly increasing for the real time measurement throughout worldwide. The increment in the number of PMU installation is to only focus on the improvement of system state estimation (SE) performance. However, the expensive nature of the metering device requires huge amount of installation cost with the other communication facilities, therefore an optimal placement of PMU is necessary. Different techniques have been designed and used to overcome this matter. The paper presents numerous optimization algorithms such as, Mathematical programming, Heuristic, and Meta-Heuristic techniques which are specially used for the optimization of PMU placement with complete network observability. Furthermore, each PMU technique is explained, and performances are compared for the most appropriate and optimal placement of PMU methods, which can be recommended for a future work to get complete network observability.

scholarly journals PMU Optimal Placement in Wide Area Monitoring Systems using Grey Wolf Optimization technique

2019 ◽  
Vol 4 (1) ◽  
pp. 1-7
Author(s):  
Y. AZZOUGUI ◽  
A. RECIOUI ◽  
A. MANSOURI
Keyword(s):  
Optimization Technique ◽  
Advanced Technology ◽  
Wide Area ◽  
Optimal Placement ◽  
Grey Wolf Optimization ◽  
Wide Area Monitoring ◽  
Angle Measurements ◽  
Minimum Number ◽  
Measurement Units ◽  
Area Monitoring

Wide area monitoring system requires the integration of an advanced technology that provides real time synchronized phase angle measurements at all their measurement points. The phasor measurement units are the most advanced devices to achieve that. The objective of this work is first, to find the optimal placement of a minimum number of PMUs in some standardized IEEE systems. Next, the same method was applied to the Algerian 63 bus system. Two cases are taken into consideration: the minimum number of PMUs without considering the ZIB, then, considering the ZIB. The simulations are carried out using MATLAB/SIMULINK.

scholarly journals Optimal Placement and Sizing of SVC for Improving Voltage Profile of Power System

2011 ◽  
pp. 146-150
Author(s):  
Shraddha Udgir ◽  
Sarika Varshney ◽  
Laxmi Srivastava
Keyword(s):  
Power Systems ◽  
Power System ◽  
Capital Investment ◽  
Reactive Power ◽  
Test System ◽  
Vital Role ◽  
Optimal Location ◽  
Optimal Placement ◽  
Voltage Profile ◽  
Stability Margins

In emerging electric power systems, increased transactions often lead to the situations where the system no longer remains in secure operating region. The flexible AC transmission system (FACTS) controllers can play a vital role in the power system security enhancement. However, due to high capital investment, it is necessary to place these controllers optimally in a power system. FACTS devices can regulate the active and reactive power control as well as adaptive to voltage-magnitude control simultaneously because of their flexibility and fast control characteristics. Placement of these devices at optimal location can lead to control in line flow and maintain bus voltages in desired level and so improve voltage profile and stability margins. This paper proposes a systematic method for finding optimal location of SVC to improve voltage profile of a power system. A contingency analysis to determine the critical outages with respect to voltage security is also examined in order to evaluate the effect of SVC on the location analysis. Effectiveness of the proposed method is demonstrated on IEEE 30-bus test system.

scholarly journals A Spanning Tree Approach in Placing Multi-channel and Minimum Channel PMU’s for Power System Observability

2015 ◽  
Vol 5 (3) ◽  
pp. 518
Author(s):  
Srihari Mandava ◽  
Vanishree J ◽  
Ramesh V
Keyword(s):  
Power Systems ◽  
Power System ◽  
Spanning Tree ◽  
Optimal Placement ◽  
Positive Sequence ◽  
Tree Search ◽  
Search Technique ◽  
Measurement Units ◽  
Novel Concept ◽  
Tree Approach

Synchronized phasor measurements have become the measurement technique of choice for electric power systems. They provide positive sequence voltage and current measurements synchronized to within a microsecond. The objective is to use the spanning tree approach and tree search technique for optimal placement of multichannel and minimum channel synchronized phasor measurement units (PMUs) in order to have full observability of Power System. The novel concept of depth of observability is used and its impact on the number of PMU placements is explained.  The spanning tree approach is used for the power system graphs and a tree search technique is used for finding the optimal location of PMUs. This is tested on IEEE-14 and IEEE-30 bus system. The same technique is modified to optimally place minimum channel PMUs on the same IEEE-14 and IEEE-30 bus systems. Matlab tool has been used for fulfilling the objective.

scholarly journals The Improvement of Weighted Least Square State Estimation Accuracy Using Optimal PMU Placement

2020 ◽  
Vol 15 ◽  
Keyword(s):  
State Estimation ◽  
System Analysis ◽  
Test System ◽  
The State ◽  
Least Square ◽  
Optimal Placement ◽  
Estimation Accuracy ◽  
Estimation Performance ◽  
Measurement Units ◽  
A New Technique

This paper proposed a new technique to improve the state estimation performance by optimal placement of phasor measurement units (OPP), the proposed technique is based on Simulating Annealing (SA) algorithm for OPP by comparing between the SA solution sets and choosing the optimal location of PMUs to enhance the state estimation performance. The proposed technique has been tested through IEEE 24 bus test system using power system analysis toolbox in MATLAB program. In this paper the root mean squared deviation (RMSD) has been used to determine the state estimation performance, the simulation result demonstrates that the proposed method proved its effectiveness to be one of the best methods used to improve the state estimation performance

scholarly journals Optimal placement of facts devices to reduce power system losses using evolutionary algorithm

2021 ◽  
Vol 21 (3) ◽  
pp. 1271
Author(s):  
Mahmood Khalid Zarkani ◽  
Ahmed Sahib Tukkee ◽  
Mohammed Jasim Alali
Keyword(s):  
Power System ◽  
Evolutionary Algorithm ◽  
Power Flow ◽  
Reactive Power ◽  
Research Work ◽  
Test System ◽  
Optimal Placement ◽  
Unified Power Flow Controller ◽  
Voltage Profile ◽  
Facts Devices

<p>The rapid and enormous growths of the power electronics industries have made the flexible AC transmission system (FACTS) devices efficient and viable for utility application to increase power system operation controllability as well as flexibility. This research work presents the application of an evolutionary algorithm namely differential evolution (DE) approach to optimize the location and size of three main types of FACTS devices in order to minimize the power system losses as well as improving the network voltage profile. The utilized system has been reactively loaded beginning from the base to 150% and the system performance is analyzed with and without FACTS devices in order to confirm its importance within the power system. Thyristor controlled series capacitor (TCSC), unified power flow controller (UPFC) and static var compensator (SVC) are used in this research work to monitor the active and reactive power of the carried out system. The adopted algorithm has been examined on IEEE 30-bus test system. The obtained research findings are given with appropriate discussion and considered as quite encouraging that will be valuable in electrical grid restructuring.</p>

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