This paper addresses the detailed modeling and small-signal stability analysis of a multi-terminal high voltage direct current (HVDC) system including large diode rectifier-connected off-shore wind power plant (WPP). The study covers both islanded connected WPP operation with different control scenarios. Islanded stands for non-conducting HVDC rectifier (DR) whereas in DR is conducting. modes i...

The load demand to a power grid, as well the interest in clean and low-cost energy resources, has led high integration of wind plants into system grids. There are grid code standards that set for design these plants. These codes often look at operation plant islanded mode, where possible analysis most sensitive quantities such voltage, frequency, reactive power, etc. is carried out. Therefore, ...

Coordination of various distributed generation (DG) units is required to meet the growing demand for electricity. Several control strategies have been developed operate parallel-connected inverters microgrid load sharing. Among these techniques, due lack essential communication links between coordinate DG within a microgrid, droop method has generally accepted in scientific community. This pape...

This paper presents a new reliable algorithm of loss of mains detection for distributed generation. One of the technical issues created by DG interconnection is inadvertent islanding. Islanding occurs when a portion of the distributed system becomes electrically isolated from the remainder of the power system, yet continues to be energized by DG connected to the isolated subsystem. It can be de...

This paper deals with the problem of voltage security in microgrids. In general, voltage security is an issue for power systems, where the lack of reactive power is a concern. For microgrids a complexity is imposed, since frequency and voltage level deviations may take place by the operation of droop-controlled inverters. This paper incorporates the load margin calculation into a microgrid stru...

this paper proposes a low voltage (±0.55v supply voltage) low power (44.65µw) high common mode rejection ratio (cmrr) differential amplifier (d.a.) with rail to rail input common mode range (icmr), constant transconductance (gm) and enhanced frequency performance. its high performance is obtained using a simple negative averaging method so that it cancels out the common mode input signals at th...