Medium and long term voltage stability simulation of power system under high proportion of new energy substitution

This work evaluates the performance of a particular differential-algebraic equation solver, referred to as DASSL, in power system voltage stability computer applications. The solver is tested for a time domain long-term voltage stability scenario, including transient disturbances, using a real power system model. Important insights into the mechanisms of the DASSL solver are obtained through the use of this real model, including control devices relevant to the simulated phenomena. The results indicate that if properly used, the solver can be a powerful numerical tool in time domain assessment of long-term power system stability since it comprises, among several important features, suitable and very efficient variable order and variable step-size numerical techniques. These characteristics are very important when CPU time is a great concern, which is the case when the power system operator needs reliable results in a short period of time. Prior to the present work, this solver has never been applied in power system stability computer analysis in time domain considering slow and fast phenomena.

Download Full-text

Long Term Voltage Stability Enhancement by Model Predictive Control

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.157-158.1553 ◽

2012 ◽

Vol 157-158 ◽

pp. 1553-1557

Author(s):

Pei Jia Yu ◽

Ting Ting Jiang ◽

Jing Zhang

Keyword(s):

Model Predictive Control ◽

Power System ◽

New England ◽

Predictive Control ◽

Voltage Stability ◽

Control Method ◽

Proper Time ◽

Time Instant ◽

Load Shedding

Power system load shedding has been used as an emergency control method to prevent possible power system instability problems. In this paper, a model predictive control based load shedding scheme is proposed to enhance long term voltage stability of a power system. The main advantage of this method is the capability to handle control actions with proper time instant. A new cost function is defined for the model predictive control scheme. The proposed scheme is tested on the New England 39-bus system to validate its efficiency and effectiveness in preventing system long term voltage stability problems.

Download Full-text

A Load Shedding Scheme for Long Term Voltage Stability Enhancement by Multi-Stage Model Predictive Control

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.383-390.4735 ◽

2011 ◽

Vol 383-390 ◽

pp. 4735-4741

Author(s):

Yu He ◽

Jing Zhang ◽

Zhi Wei Peng ◽

Zhao Yang Dong

Keyword(s):

Model Predictive Control ◽

Power System ◽

New England ◽

Predictive Control ◽

Voltage Stability ◽

Control Method ◽

Load Shedding ◽

Stage Model ◽

Multi Stage

Power system load shedding has been used as an emergency control method to prevent possible power system instability problems. In this paper, a new multi-stage model predictive control based load shedding scheme is proposed to enhance long term voltage stability of a power system. The main advantage of this new method is the capability of the scheme to handle multi-stage control actions, which may also be disturbances to a power system at a critical status toward instability. A new cost function is defined for the model predictive control scheme. The proposed scheme is tested on the New England 39-bus system to validate its efficiency and effectiveness in preventing system long term voltage stability problems.

Download Full-text

Impact of converter interfaced generators on power system long-term voltage stability monitoring and control

Electric Power Systems Research ◽

10.1016/j.epsr.2021.107438 ◽

2021 ◽

Vol 199 ◽

pp. 107438

Author(s):

Panagiotis Mandoulidis ◽

Theodoros Souxes ◽

Costas Vournas

Keyword(s):

Power System ◽

Voltage Stability ◽

Monitoring And Control ◽

Stability Monitoring ◽

And Control

Download Full-text

Particle Swarm Optimization Solving Nonlinear Programming Problems in Power System

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.760-762.1183 ◽

2013 ◽

Vol 760-762 ◽

pp. 1183-1186

Author(s):

Li Kang ◽

Xiao Guang Li

Keyword(s):

Nonlinear Programming ◽

Power System ◽

Computational Efficiency ◽

Optimization Model ◽

Large Scale ◽

Voltage Stability ◽

Reactive Power ◽

Voltage Control ◽

Stability Control

In order to improve the control capability of the power system voltage stability and to enhance spatial and temporal coordination of voltage control means, it is essential to establish the model of emergency voltage control that can globally mobilize reactive power support and voltage control potential. Focus on the long-term voltage stability of power system, the paper introduce nonlinear programming into emergency voltage control, settle the problem that how to establish the model of emergency voltage control. Based on detailed models of power system, the receding optimization model of long-term voltage stability control is established under framework of model predictive control. In order to improve the computational efficiency and reduce feedback delays, nonlinear programming sensitivity algorithm is proposed to solve receding optimization model. The proposed method can improve computational efficiency significantly which creates the condition for the emergency voltage control application to large-scale systems.

Download Full-text