This paper provides an assessment of candidate voltage/reactive power control devices for distribution systems. The recent trend toward Distributed Energy Resources (DERs), and Distributed Generation (DG), in particular, is often based on the rationale to support voltage and compensate for reactive power closer to the end users. This situation calls for a systematic approach to assessing altern...

This paper proposes a photovoltaic (PV) and battery interfaced series hybrid active power filter (SHAPF), which consists of series active power filter and an LC shunt passive filter. The main benefits of the proposed system provide the compensation against the voltage harmonics, current harmonics and voltage interruption for the whole day. A series active power filter (SAPF) demands a source of...

This paper proposes a methodology for mitigating the occurrence of cascading failure in stressed power systems. The methodology is essentially based on predicting voltage instability in the power system using a voltage stability index and then devising a corrective action in order to increase the voltage stability margin. The paper starts with a brief description of the cascading failure mechan...

The fast and coordinated voltage control of distributed nodes inside a large scale wind farm is a stringent issue. To achieve the reactive power compensation without a dedicated upper communication system, this paper proposes a relative control strategy based on the local reactive power regulation. This method can realize the voltage coordination of the key equipment and feeder line nodes, on t...

In this paper we present a supervisory strategy for voltage regulation control problems in electrical power grids based on the Command Governor (CG) approach. The scheme consists of reconfiguring the nominal voltage set-point of the network in the presence of Distributed Generation (DG) units to avoid operative constraint violations in response to unexpected load changes and/or failures. Such a...

This papers deals with the emergency control of Load Tap Changers (LTCs) to face low transmission voltages or voltage instability situations. The proposed simple control logic consists in reverting the tap movements once the voltage at a monitored transmission bus falls below some threshold. A deadband on this voltage allows the system to settle down in between the normal and reverse logic mode...

Static synchronous compensator (STATCOM) is a shunt connected voltage source converter (VSC), which can affect rapid control of reactive flow in the transmission line by controlling the generated a.c. voltage. The main aim of the paper is to design a power system installed with a Static synchronous compensator (STATCOM) and demonstrates the application of the linearised Phillips-heffron model i...

The rapid deployment of distributed resources (DR), principally photovoltaic systems, is driving changes in distribution system interconnection standards. While much of the effort is on mitigating local issues such as voltage control and protection coordination, there is also an increasingly urgent need to consider the effect that DR have on bulk power system reliability. A major concern is tha...

The paper presents the design and control strategy of an isolated DC microgrid, which is based on classical techniques, predictive iterative algorithms. parameters are maximum overshoot, settling time voltage ripple. designed to operate in two different modes, end-users minimum demand scenarios, this achieved through incorporation network dynamic loads. methodology developed allows obtain a fas...

This paper presents a Distributed Model Predictive Control (DMPC)-based algorithm for distributed and coordinated voltage control of wind power plants. Under the proposed approach, magnitude at point connection plants is optimally controlled to meet requirements. In conventional centralized each farm tracks signals set by Transmission System Operator but DMPC responds locally mitigate deviation...