The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Reducing carbon dioxide emissions is an important issue for protection of the global environment. To achieve this, the spread of photovoltaic generation (PV) has expanded since the start of Feed-in Tariff (FIT) in Japan. However, it is difficult to introduce new renewable energy generation because of restrictions on grid interconnection. This is due to the concerns of voltage deviation, reverse power...
The introduction amount of renewable energy has increased, but control of power system is getting harder. As a solution of this problem, the use of an off-grid smart house that is not connected to the electric power system. The off-grid smart house can freely introduce renewable energy generation equipments. Also, it can operate without emission of carbon dioxide. In recent years, attention has been...
This paper propose a modified multi-objective optimization method for distribution systems. Recent distribution system is introduced smart grid concept. It is necessary to consider optimal design of system because of reduction cost and high efficiency of energy usage for renewable energy sources (RESs). However, these multi objects conflict each other, which cannot solve by single objective optimization...
In recent years, installation of renewable energy facilities is increasing rapidly in response to the movement to suppress the release of greenhouse gasses responsible for the warming of the earth and to save fossil fuels, which are growing increasingly precious. Furthermore, the cost of photovoltaic systems is decreasing year by year. Therefore, it is assumed that price of photovoltaic power will...
This paper proposes the application of multi-objective optimization to step voltage regulators in a distribution system. Conventional electrical power systems do not consider reverse power flow, in which the power flows toward the feeder in the distribution system. When large quantities of distributed generators (DGs) are introduced into a distribution system they can cause voltage deviations beyond...
Distributed Generators (DGs) using Renewable Energy Sources (RESs) have a huge economical and environmental potential. However, high penetration of DGs in distribution systems cause voltage deviations beyond the statutory range, and can cause reverse power flow toward the substation transformer. It is essential to control and maintain the distribution voltage within proper range to ensure both a stable...
From the perspective of global warming suppression and depletion of energy resources, renewable energies, such as the solar collector (SC) and photovoltaic generation (PV), are getting attention in distribution systems. Houses with PV and heat pump (HP) systems are also gaining wide use recently in residential areas recently because of using time-of-use electricity pricing. Thus, optimal scheduling...
From the perspective of global warming suppression and depletion of energy resources, renewable energies, such as solar collector (SC) and photovoltaic generation (PV), are getting attention in distribution systems. Then, all electric houses with PV and HP are becoming widely used recently because of using time-of-day electricity rate system. If fixed battery can be introduced in the houses, the electricity...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.