scholarly journals Behavioural modelling and power quality simulation of a HVDC electric power system for MEA

2018 ◽  
Vol 2018 (13) ◽  
pp. 484-488
Author(s):  
Wang Yue ◽  
Hui Yannian ◽  
Kang Yuanli
Keyword(s):  
Power System ◽  
Electric Power ◽  
Power Quality ◽  
Electric Power System ◽  
Behavioural Modelling

scholarly journals AN OVERVIEW ON POWER QUALITY ISSUES IN POWER GRIDS CONNECTED WITH NON-CONVENTIONAL ENERGY SOURCES

2021 ◽  
Vol 6 (4) ◽  
Author(s):  
Madha Chesti ◽  
Ishtiyaq Shafi Rafiqi
Keyword(s):  
Power System ◽  
Electric Power ◽  
Power Quality ◽  
Electric Power System ◽  
Power Grids ◽  
Energy Sources ◽  
The World ◽  
Non Linear ◽  
Quality Issues

The term power quality is inescapable when it comes to Electric power system. The main intent of the researchers and different organizations all over the world is to provide the consumers with quality power. Practically, it is difficult to achieve quality power as there are number of issues associated with Electric power system called as power quality problems. Harmonics, transients, use of non linear loads, interruptions etc. are the factors which cause disturbances in the electric power system and thus leads to the deterioration in the quality of power. These disturbances are the major challenges to the power quality and must be analyzed properly before mitigating them. The paper has put emphasis on the major disturbances in the power grids. The paper is also considerate about the causes and effect of these disturbances in the power grids.

Island Mode of Low Capacity Generators Operation

2014 ◽  
Vol 1008-1009 ◽  
pp. 426-429 ◽  
Author(s):  
Alexander O. Egorov ◽  
Stanislav A. Eroshenko ◽  
Vladislav O. Samoylenko ◽  
Pavel V. Kolobov ◽  
Daniil A. Glushkov
Keyword(s):  
Power Systems ◽  
Power System ◽  
Electric Power ◽  
Power Quality ◽  
Operating Systems ◽  
Electric Power System ◽  
Operational Stability ◽  
Generator Operation ◽  
Advantages And Disadvantages ◽  
Technical Requirements

In this paper advantages and disadvantages of island mode generator operation are considered. There are significant difficulties when it is necessary to provide operational stability and power quality in the system isolated from utility electric power system (EPS). Operation of the isolated system (referred to as “island”) is possible but only in case special technical requirements are met and protection and automation devices are adjusted properly. The absence of technical requirements in Russia led to the necessity of foreign guides and instructions investigation. The analysis of the possibility of foreign experience implementation in the field of autonomously operating systems in Russian power systems is conducted.

Aplikasi Dynamic Voltage Restorer Series Pada Analisis Voltage Sags

2012 ◽  
Vol 9 (2) ◽  
Author(s):  
Marthen Liga
Keyword(s):  
Power System ◽  
Electric Power ◽  
Power Quality ◽  
Electric Power System ◽  
Voltage Sag ◽  
Dynamic Voltage Restorer ◽  
Voltage Restorer ◽  
Dynamic Voltage ◽  
Quality Of Electric Power

An electric power system must have a high level of reliability that the system is able to provide the required supply of electrical energy continuously and with good power quality, in terms of voltage regulation and frequency regulation. Decline in the quality of electric power will make serious disruption to the operational process industry customers.Dynamic voltage restorer (DVR) is a method of power quality solutions that are used to recover the voltage drop (sag) through the injection voltage on the network. Minimum power injection method is the minimum active power supplied to the load as a result of the voltage sag compensation so as to restore the load voltage back to normal. Control of dynamic voltage restorer produces a rapid and appropriate response to be the right solution to improve the quality of electric power system. Dynamic voltage restorer series is used to improve the quality of the voltage due to voltage sag that can interfere with the performance of critical equipment or sensitive equipment. Performance Series DVR is shown as an interruption of the voltage sag caused by a short circuit or some disturbance of the phase and three phase power system. Process simulation using MATLAB-SIMULINK software to the electric power system toolbox.

scholarly journals Power quality improvement recommendations for shipboard power systems

2020 ◽  
pp. 55-61
Author(s):  
В.Ф. Белей ◽  
М.С. Харитонов ◽  
Р.О. Брижак
Keyword(s):  
Power Systems ◽  
Power System ◽  
Energy Saving ◽  
Electric Power ◽  
Power Quality ◽  
Electromagnetic Interference ◽  
Electrical Equipment ◽  
Electric Power System ◽  
Maritime Industry

В настоящее время на судах и объектах морской индустрии широко внедряется энергосберегающее электрооборудование, что позволяет добиться резкого снижения расхода электроэнергии и массогабаритных показателей оборудования, существенно расширяет функциональные возможности электротехнических комплексов и систем, приводит к улучшению эксплуатационных характеристик. Однако использование новейших энергосберегающих технологий, основанных на нелинейных элементах, и коммутация электрооборудования приводит к ухудшению качества электрической энергии в судовой электроэнергетической системе. В то же время, растет число потребителей, предъявляющих к качеству электроэнергии повышенные требования. В итоге, работа судовых энергокомплексов может отличаться от расчетной, а в ряде случаев становится аварийной. В работе приведены результаты экспериментальных исследований показателей качества электрической энергии в судовой электроэнергетической системе учебного парусного судна «Крузенштерн». Представлены результаты лабораторных исследований на физической модели судовой электростанции с источниками электромагнитных помех, обоснованы организационные и технические решения по снижению уровня электромагнитных помех в судовых электроэнергетических системах. Nowadays, energy-saving electrical equipment is widely introduced on ships and maritime industry facilities. It leads to a decrease in power consumption, weight and dimensions of equipment, significantly expands the functionality of electrical complexes and systems, and provides improvement of operational characteristics. However, the use of the latest energy-saving technologies based on non-linear elements and the switching of electrical equipment leads to a deterioration in the quality of electrical energy in the ship's electric power system. At the same time, the number of consumers with increased requirements for the quality of electricity is growing. As a result, the operation of ship power complexes may differ from the normal one, and in some cases it becomes emergency. The paper presents the results of experimental studies of electric power quality indicators in the ship's electric power system of the sail training ship "Kruzenshtern". The results of laboratory studies on a physical model of a ship power plant with sources of electromagnetic interference are presented, organizational and technical solutions to reduce the level of electromagnetic interference in ship power systems are substantiated.

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