To transfer large amount of direct current power having high amplitude voltage over long distance, high voltage direct current (HVDC) transmission system is used. This system was introduced 60 year ago and now it is widely used all over the world. Some examples of HVDC systems are following; Voltage-SourcedConverter (VSC), current commutated converter (CCC) and line commutated converter (LCC) d...

Enhancement of stability of the power system has been achieved by the application of Unified power flow controller (UPFC) device with an additional supplementary controller. This supplementary damping controller can be installed on any control channel of the UPFC inputs to implement the task of power oscillation damping (POD) controller. We have presented a comprehensive assessment and performe...

A reliable approach based on a multi-verse optimization algorithm (MVO) for designing load frequency control incorporated in multi-interconnected power system comprising wind and photovoltaic (PV) plants is presented this paper. It has been applied optimizing the parameters of controller (LFC) multi-source (MSPS). The MSPS includes thermal, gas, hydro energy generation. Moreover, integrated wit...

In high voltage direct current (HVDC) grids, the reference values of power controllers are normally adjusted based on DC-link as DC is regulated by droop controllers. As a matter fact, except for slack bus, there trade-off between power-sharing and regulation all remaining HVDC buses. The main issue with this control strategy that in case contingencies, significant oscillations throughout grids...

The DC-side line faults in high-voltage direct-current (HVDC) systems utilising voltage-source converters (VSCs) are a major concern for multi-terminal HVDC systems in which complete isolation of the faulted system is not a viable option. A number of challenges are posed by both pole-to-pole and pole-to-ground faults including the presence of very fast and high amplitude discharge current from ...

To reduce the cost of bulk power transmission using voltage source converter high-voltage DC (HVDC) technology, a unidirectional hybrid is proposed, where diode rectifier (DR) and modular multilevel (MMC) based on full-bridge (FB) submodules are connected in series side. The FB-MMC controls its to regulate transmitted power. majority via DR considering efficiency superiority only low rating req...

For High Voltage Direct Current (HVDC) applications, the control and protection system plays an essential role in the overall performance of the transmission system. The control and protection system adopted by ABB Power Systems uses the latest technology from the fields of electronics and microprocessors. The main objective of this paper is to describe the experience from using the MACHTM (Mod...

Smart Grid is much more than IT and smart meters. A SmartGrid is an electricity network that can intelligently integrate the actions of all users connected to it – generators, consumers and those that do both – in order to efficiently deliver sustainable, economic and secure electricity. This article first gives a background to HVDC Transmission Technology in general, and secondly describes how...