Monitoring of the stability of wide area power systems based on multiple synchronized phasor measurements

2006 ◽  
Author(s):  
M. Watanabe ◽  
M. Uchida ◽  
H. Morimoto ◽  
T. Makita ◽  
Y. Mitani
Keyword(s):  
Power Systems ◽  
Wide Area ◽  
Phasor Measurements ◽  
The Stability

A Measurement-Based Framework for Dynamic Equivalencing of Large Power Systems Using Wide-Area Phasor Measurements

2011 ◽  
Vol 2 (1) ◽  
pp. 68-81 ◽  
Author(s):  
Aranya Chakrabortty ◽  
Joe H. Chow ◽  
Armando Salazar
Keyword(s):  
Power Systems ◽  
Wide Area ◽  
Large Power ◽  
Phasor Measurements

Event-triggered and self-triggered wide-area damping control designs under uncertainties

2017 ◽  
Vol 40 (7) ◽  
pp. 2259-2269 ◽  
Author(s):  
Jiajun Duan ◽  
Hao Xu ◽  
Wenxin Liu
Keyword(s):  
Power Systems ◽  
Phase Measurement ◽  
Wide Area ◽  
Control Center ◽  
Damping Control ◽  
Control Schemes ◽  
Global Vision ◽  
The Stability ◽  
Synchronized Measurements ◽  
Event Triggered

Traditional damping controllers of wide-area power systems (WAPSs) are not able to solve the inter-area oscillation problem effectively owing to lack of global vision. It weakens the power transfer capability and even the stability of WAPSs. The installation of a large number of phase measurement units brings about the system-wide synchronized measurements. Considering that conventional periodic control solutions have placed an excessive burden on the cyber infrastructure, in this paper, two advanced aperiodic control schemes are designed based on the real-time global synchronized measurements. Two control schemes, that is, zero-order-hold event-triggered control and self-triggered control, are developed for wide-area damping control with the minimum communication between the control center and the actuators. The control center only updates control signals for the actuators when certain conditions are triggered, and there is no communication occurrence for the rest of time. Thus, they have mild requirements on communication and computation. The algorithms are tested through simulations of WAPS models with different levels of details. The simulation results demonstrate the effectiveness and benefits of the control design.

Performance of a Noninvasive Magnetic Sensor-Based Current Measurement System in Power Systems

Electronics ◽  
2021 ◽  
Vol 10 (22) ◽  
pp. 2869
Author(s):  
Prasad Shrawane ◽  
Tarlochan S. Sidhu
Keyword(s):  
Power Systems ◽  
Measurement System ◽  
Magnetic Sensor ◽  
Distribution Grid ◽  
Current Application ◽  
Phasor Measurements ◽  
Ac Current ◽  
The Stability ◽  
Current Monitoring ◽  
Transmission And Distribution

A large increase in distributed generation integrated within power system networks has resulted in power quality challenges and in the need to resolve complex system faults. The monitoring of the real-time state of the power parameters of the transmission and distribution grid helps to control the stability and reliability of the grid. In such a scenario, having current monitoring equipment that is flexible and easy to install can always be of great help to reduce the price of energy monitoring and to increase the dependability of a smart grid. Advances in magnetic sensor research offer measurement system accuracy that is less complex to install and that can be obtained at a lower less cost. Tunneling magnetoresistive (TMR) sensors can be used to measure the AC current by sensing the magnetic field that is generated by the current-carrying conductor in a contactless manner. This paper illustrates the results of a thorough investigation of factors that can influence the performance of the TMR sensors that are used for the current phasor measurements of a single-phase AC current application, such as the effects of distance, harmonics, and conductor insulation.

scholarly journals State-Space Model of Quasi-Z-Source Inverter-PV Systems for Transient Dynamics Studies and Network Stability Assessment

Energies ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4150
Author(s):  
Lluís Monjo ◽  
Luis Sainz ◽  
Juan José Mesas ◽  
Joaquín Pedra
Keyword(s):  
Power Systems ◽  
State Space ◽  
State Space Model ◽  
Pv System ◽  
Pv Systems ◽  
Renewable Power ◽  
Ac Networks ◽  
Transient Interactions ◽  
The Stability ◽  
Averaged Model

Photovoltaic (PV) power systems are increasingly being used as renewable power generation sources. Quasi-Z-source inverters (qZSI) are a recent, high-potential technology that can be used to integrate PV power systems into AC networks. Simultaneously, concerns regarding the stability of PV power systems are increasing. Converters reduce the damping of grid-connected converter systems, leading to instability. Several studies have analyzed the stability and dynamics of qZSI, although the characterization of qZSI-PV system dynamics in order to study transient interactions and stability has not yet been properly completed. This paper contributes a small-signal, state-space-averaged model of qZSI-PV systems in order to study these issues. The model is also applied to investigate the stability of PV power systems by analyzing the influence of system parameters. Moreover, solutions to mitigate the instabilities are proposed and the stability is verified using PSCAD time domain simulations.

scholarly journals Self Tuning Wide Area Damping Control for Distributed Power Systems

2020 ◽  
Vol 53 (2) ◽  
pp. 13454-13459
Author(s):  
Abhishek Nayak ◽  
Sukumar Mishra
Keyword(s):  
Power Systems ◽  
Wide Area ◽  
Distributed Power ◽  
Damping Control ◽  
Distributed Power Systems ◽  
Self Tuning

Power Systems Stability Enhancement Using a Wide-Area Signals Based Hierarchical Controller

2005 ◽  
Vol 20 (3) ◽  
pp. 1465-1477 ◽  
Author(s):  
F. Okou ◽  
L.-A. Dessaint ◽  
O. Akhrif
Keyword(s):  
Power Systems ◽  
Wide Area ◽  
Stability Enhancement
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