Time Dependence of Controls to Avoid Voltage Collapse
نویسندگان
چکیده
In this paper, the effect of time dependence of control actions used to avoid voltage collapse, such as reactive power compensation and load shedding, is studied. A thorough justification of the phenomena under study is first presented with the help of a simple test system. The time dependence of the control actions is then studied in a real voltage collapse scenario of the Chilean Interconnected System (CIS), based on a reduced system model.
منابع مشابه
A Fast Voltage Collapse Detection and Prevention Based on Wide Area Monitoring and Control
Voltage stability is one of the most important factors in maintaining reliable operation of power systems. When a disturbance occurs in the power system, it usually causes instabilities and sometimes leads to voltage collapse (VC). To avoid such problems, a novel approach called Vector Analysis (VA) is proposed that exploits a new instability detection index to provide wide area voltage stabili...
متن کاملA New Method for Considering Distribution Systems in Voltage Stability Studies
In methods presented to calculate the voltage collapse point, the transmission system is usually the only part of the power system that is completely modeled. Distribution systems are often replaced by aggregate load models because the use of the detailed model of distribution systems in voltage stability analysis not only increases the computation time, but also decreases the probability of co...
متن کاملThe irrelevance of electric power system dynamics for the loading margin to voltage collapse and its sensitivities
The loading margin to a saddle-node or fold bifurcation measures the proximity to voltage collapse blackouts of electric power transmission systems. Sensitivities of the loading margin can be used to select controls to avoid voltage collapse. We analytically justify the use of static models to compute loading margins and their sensitivities and explain how the results apply to underlying dynami...
متن کاملThe Irrelevance of Load Dynamics for the Loading Margin to Voltage Collapse and Its Sensitivities
The loading margin to a saddle-node orfold bifurcation is a useful and basic index of proximityto voltage collapse. Sensitivities of the loading margincan be used to select controls to avoid voltage collapse.This paper justifies the use of static power models to com-pute loading margins and their sensitivities. In particular,dynamic load models may be reduced to static e...
متن کاملApplication of TCSC and SVC to Enhance the Power System Static Voltage Stability
In this paper, the performance of two types of FACTS devices in order to enhance the power system static voltage stability has been investigated. These devices include Static Var Compensator (SVC) and Thyristor Controlled Series Capacitor (TCSC). The modeling of the Single Machine Infinite Bus (SMIB) and aforesaid devices has been made up in steady state mode with disregarding of the generator ...
متن کامل