A New Backup Protection Scheme for Transmission Lines with Limited Phasor Measurement Units

2021 ◽  
pp. 1-16
Author(s):  
Mohammadreza Ahmadinia ◽  
Javad Sadeh
Keyword(s):  
Transmission Lines ◽  
Phasor Measurement Units ◽  
Backup Protection ◽  
Protection Scheme ◽  
Phasor Measurement ◽  
Measurement Units

scholarly journals Analysis of Line Outage Detection in Nigeria 330kV Transmission Lines using Phasor Measurement Units

2019 ◽  
Vol 2 (3) ◽  
pp. 1-81
Author(s):  
Nkem Francis Obodoagwu
Keyword(s):  
Power System ◽  
Transmission Lines ◽  
Power Flow ◽  
Phasor Measurement Units ◽  
Measurement Unit ◽  
Online Analysis ◽  
Phasor Measurement ◽  
Flow Algorithm ◽  
Measurement Units ◽  
Newton Raphson

In this work, an analysis of line outage detection in Nigeria 330kV transmission lines using Phasor Measurement Units was presented. This requires collection and analysis of the data obtained from Transmission Company of Nigeria with the aid of PSAT 2.10.1 / MATLAB SIMULINK using Newton-Raphson power flow algorithm and also to determine the effectiveness of PMU when introduced in our power system network. 12 buses and 3 Generators system were considered for the studied. This was achieved by collecting relevant transmission parameters for 330kV line and was simulated on PSAT 2.10.1 and MATLAB 2015a using Newton-Raphson power flow algorithm. The work involved an offline and online analysis. For the offline analysis the admittance / impedance matrix for Y-bus and bus voltage for pre-outage was obtained via the power flow analysis and change in impedance for the lines were calculated. These values were further normalised in order to reduce the value to a row echelon form. Then for the online analysis; the change in phase angle from the Phasor Measurement Unit (PMU) online simulation for pre-outage and also post-outage was calculated and a normalised column matrix was gotten. Finally, the effectiveness of the line outage detection was graphically represented using MATLAB software to plot the values of the normalised values of the offline and online analysis; i.e., by comparing the normalised form of the offline and online values. These results clearly show that PMUs gives an accurate monitoring and total observability when introduced in Nigeria power system.

scholarly journals BTLBO Based SPMUs Placement Optimization for Fault Observation in Power Grid

2019 ◽  
Vol 4 (1) ◽  
pp. 18-24
Author(s):  
Abdelkader ZITOUNI ◽  
Hamid BENTARZI
Keyword(s):  
Research Work ◽  
Phasor Measurement Units ◽  
Optimal Placement ◽  
Placement Problem ◽  
Protection Scheme ◽  
Phasor Measurement ◽  
Teaching Learning Based Optimization ◽  
Measurement Units ◽  
Benchmark System ◽  
Teaching Learning

The placement of synchro-phasor measurement units in electric transmission systems has also gained much attention for enhancing the control as well as the protection scheme. In this research work, a binary teaching learning based optimization (BTLBO) algorithm for the optimal placement of synchro-phasor measurement units (SPMUs) is proposed. The optimal PMU placement problem is formulated to minimize the number of SPMUs installation subject to full network observability of the power system buses under fault conditions. The effectiveness of the proposed method is verified by the simulation of IEEE 14-bus benchmark system.

Dynamic fault locator for three-terminal transmission lines for phasor measurement units

2013 ◽  
Vol 7 (2) ◽  
pp. 183-191 ◽  
Author(s):  
Zhengyou Y. He ◽  
Ruikun K. Mai ◽  
Qingquan Q. Qian ◽  
Xiaopeng P. Li ◽  
Wen He ◽  
...  
Keyword(s):  
Transmission Lines ◽  
Phasor Measurement Units ◽  
Phasor Measurement ◽  
Measurement Units

Estimação de Fontes Harmônicas em Sistemas de Potência

2020 ◽  
Vol 20 ◽  
pp. 11
Author(s):  
Arthur Mesquita ◽  
Marcelo Lima ◽  
Thales Wulfert ◽  
Igor Delgado ◽  
Leandro Manso ◽  
...  
Keyword(s):  
Phasor Measurement Units ◽  
Phasor Measurement ◽  
Measurement Units

Este artigo apresenta uma metodologia para a estimação de fontes de correntes harmônicas em sistemas elétricos de potência a partir do uso da Análise de Componentes Independentes (ICA). Através dos fasores de tensão harmônica complexa obtidos por PMUs (Phasor Measurement Units), os perfis harmônicos podem ser observados e considerados para a estimação das fontes. Um algoritmo baseado em um filtro de média móvel é responsável por dissociar as variações lentas e rápidas dos perfis harmônicos que são empregados à ICA para a estimação das fontes de corrente, rastreando-as ao longo do dia. Simulações computacionais no sistema IEEE 14 Barras são realizadas no intuito de validar a metodologia proposta.

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