This study presents a novel approach to calculate the load be shed in El Hierro isolated power system generation tripping events. The proposed shedding law is based on linear regression model. model obtained by means of offline dynamic simulations set representative test cases. has been compared under-frequency scheme currently utilized Hierro, considering three different implementation schemes...

The main frequency is an important parameter of an electrical power system. The frequency can change over a small range due to generation-load mismatches. Some power system protection and control applications, e.g., frequency relay for load shedding, load-frequency controller, require accurate and fast estimation of the frequency. Most digital algorithms for measuring frequency have acceptable ...

When an islanding condition caused by unintentional single-line to ground fault occurs in active distribution network with distributed generation, the frequency stability and protection issues remain challenging. Therefore, this paper presents under enhancement of using a virtual inertia-controlled-battery energy storage system improve faults. The inertia control is designed based on direct qua...

The voltage instability in power system increases with power demand and over stressing of existing transmission lines nearly to their limits. A serious type of voltage instability is voltage collapse. In this paper comparative study of two techniques, namely Voltage Collapse Prediction Index (VCPI) and Sensitivity analysis to find voltage collapse vulnerability of bus in a power system is done....

The main contribution of this paper is the development of a novel load shedding methodology so as to regulate unacceptable frequency deviations, with least disruption of service, in the case of controlled islanding. To achieve this, an abstracted model of each islanded area, consisting of one lumped generator and turbine model, is used. Since in the controlled islanding the bounds of the areas ...

The paper presents a Special Protection Scheme solution for the central Zagreb transmission system. The Central Zagreb transmission system is characterized by a highly meshed network with combined overhead and cable sections and a special operation of the 110 kV cable link between two power plants important for the city’s heat and electricity supply. The Special Protection Scheme is developed u...

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 Interconnec...

Research in the area of power system, incorporating optimal power flow and optimal load shedding, has been used in classical dispatch problems to determine control adjustments to remove line overloads. This paper reports a rule-based load shedding in a ship power system. To filter critical outages and congestion cases, a load shedding rule-based system is implemented. The algorithm searches for...