Introducing distributed generation into a power system can lead to numerous benefits including technical, economic, environmental, etc. To attain these benefits, distributed generators with proper rating should be installed at suitable locations. Given the similar effects of distributed generators and capacitor banks on operation indices of a distribution system, simultaneous assignment of best...

OBJECTIVE To observe the changes of volt-ampere characteristics of Yuan-Primary acupoints in women before, during and after menstruation, and to find out the relationships between Qi-blood in human body and volt-ampere characteristics of acupoints, so as to develop a new method for quantitative analysis on changes of Qi-blood. METHODS A high-sensitive detection system of volt-ampere character...

Quasi-steady state time-series (QSTS) simulation of distribution feeders can become computationally burdensome due to many buses and devices, long horizons, and/or high temporal resolution. To reduce this burden, network reduction removes shifts loads/generation the remaining circuit produce a smaller equivalent. However, voltage-controlled devices have traditionally limited reduction, since th...

The greater integration of solar photovoltaic (PV) systems into low-voltage (LV) distribution networks has posed new challenges for the operation power systems. violation voltage limits attributed to reverse flow been recognized as one significant consequences high PV penetration. Thus, reactive control inverters emerged a viable solution localized regulation. This paper presents detailed study...

High penetration of rooftop photovoltaic (PV) systems in distribution feeders can give rise to overvoltage during peak generation hours. A well-known solution for this problem is Volt-VAR control method, which PV inverters mitigate the by reactive power absorption. The conventional scheme calculates reference based on a limited bandwidth V-Q droop controller. Although method capable steady-stat...

In photovoltaic (PV) systems, inverters have an essential role in providing energy supply to meet the demand with power quality. Inverters inject into grid considering that a renewable source is available; however, during intermittent periods or absence of generation, inverter remains inactive, which decreases performance PV system. One way increase operation operate them as Volt-Amps Reactive ...

Introns of Plasmodium falciparum var genes act as transcriptional silencing elements that help control antigenic variations. In transfected episomes, intron silencing of a drug-selectable marker under var promoter control is reversed by the spontaneous deletion of key intron regions. The resulting promoter activation does not affect the transcription of chromosomal var genes.

In this paper, a new family of single-stage high step-up boost voltage inverter based on transformer is proposed, called T-Z source inverters. By replacing two inductors in the classical Z-source inverter with two transformer, the proposed inverter produces a very high boost voltage gain when, the turn ratio of the transformer is larger than one. Compared to the trans-Z source inverter, the pro...