This paper presents an analysis on the unified Power quality conditioner (UPQC) to improve the electric power quality at distribution levels. Conventional power quality mitigation equipment is a providing to be poor for an increasing number of applications. Different approaches in compensation and recent developments in fields. Single modern and very promising solution that deal with both load ...

Zhangjiakou regional network belongs to the Jibei power grid in Northern China and locates at the midway of the power transmission corridor from Inner-Mongolia to the rest of Jibei power grid. Zhangjiakou regional network consists of several area networks connected to the main network through 500kV stations. In recent years, renewable energy in rural areas has developed rapidly and electrified ...

This paper presents an analysis of the introduction of power quality assessment through power quality indexes within the framework of an agent-based power system control. The objective is to account for power quality in the power management of systems where the total power of the loads significantly exceeds the power available from generation. This is typically the case of next generation all-e...

More electric technologies (METs) play an important role in meeting ever-growing demands for energy efficiency and emission reduction in the maritime transportation sector. As a result, ships with electrical power transmission are becoming popular compared to traditional mechanical power transmission based ships. Hybrid electric propulsion is an intermediate step in this trend where both mechan...

Different power quality (PQ) disturbance sources can have major impacts on the power supply grid. This study proposes, for the first time, an early warning approach to identifying PQ problems and providing early warning prompts based on the monitored data of PQ disturbance sources. To establish a steady-state power quality early warning index system, the characteristics of PQ disturbance source...

This paper explains the problems that are due to poor Power Quality in electrical systems and shows their possible financial consequences. Power Quality is characterized by parameters that express harmonic pollution, reactive power and load unbalance. The best possible solutions to these problems are reviewed and their control systems are elaborated on. Solutions present in the field are explai...

This paper discusses the Dynamic voltage restorer (DVR) operation and control for Voltage sags compensation. DVR is a series connected power electronic based device that can quickly mitigate the voltage sags in the system and restore the load voltage to the pre-fault value. Voltage sag associated with faults in transmission and distribution systems, energizing of transformers, and starting of l...

This paper presents a novel control technique on four leg inverter with which the distribution grid is interconnected with the domestic houses. Most of the houses in the distribution side possess inverter for the usage of Electricity. With the advancement in Solar & wind, it will become easy to see houses, often with solar & a small Wind power system. The excess power generated can be exchanged...