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.
In this study, reduced current measurement control method is investigated for operation of 3-phase 4-wire shunt active power filter (SAPF) under unbalanced and distroted load conditions. The control method is based on Instantaneous Reactive Power theory (IRP) and requires only measuring the source currents to reduce the number of Current Sensors (CSs) needed in the conventional control approach. The...
This paper describes the design of a multifunction biquad filter that can provide multiple transfer functions according to the input and output current ports selected. The filter design is based on a general circuit with five passive elements (three of them are grounded) and one fully differential current follower. This versatile building block is ready to be manufactured by the ON Semiconductor Company...
One of the most important measurement devices in power systems is phasor measurement unit (PMU). The PMU is a power system device, capable of measuring the synchronized voltage and current phasor in a power system. In this paper we introduce the PMU and then we acclaim according to the PSAT, MATLAB toolbox, and different algorithms we can allocate the PMU in IEEE 14-bus and 57-bus system simulated,...
Synchronized phasor measurements are rapidly becoming commonly available in power transmission systems. Their availability impacts the performance of several application functions which rely on real-time measurements. In this paper, the impact of synchronized phasor measurements on the state estimation function will be described. The paper will cover issues related to the problem formulation, optimal...
This paper deals with the application possibility of the digitally programmable current follower in analogue signal processing. In connection with conventional double- and multiple-output current followers a current-mode low-pass filter is proposed. Using digitally programmable current followers the natural frequency of the proposed filter can be electronically adjusted. The advantage of the proposed...
In parallel to developing technology, demand for more energy makes us seek new energy sources. The most important application field of this search is renewable energy resources. Wind and solar energy have being popular ones owing to abundant, ease of availability and convertibility to the electric energy. This work covers realization of a hybrid renewable energy system for a domestic application,...
This paper presents a new fault location algorithm for three-terminal line, which utilises unsynchronised measurements of three phase currents and voltages from three line terminals. The algorithm consists of three subroutines designated for locating faults on particular line sections. The valid subroutine is indicated with use of a selection procedure. The distributed parameter line model is strictly...
In this paper, the widely recognised apparent power definitions are rigorously reviewed and their ability on the measurement of the system efficiency is investigated by using the apparent power definition, which is calculated in terms of the total line loss of the system with compensation and without compensation. Therefore, in a test system, the results are obtained for minimum rms current compensation...
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.