Optimal power

In operating the distribution network, the problem of reconfiguration distribution network according to the change of load to reduce power loss has partly reduced the operation cost of the distribution network but it can impact the reliability of power supply to the load.

11p viengfa 28-10-2024 2 1   Download

Artificial neural network (ANN), a powerful technique, has been used widely over the last decades in many scientific fields including engineering problems. However, the backpropagation algorithm in ANN is based on a gradient descent approach.

15p vibecca 01-10-2024 0 0   Download

In this paper, we aim to enhance spectrum efficiency in infrastructure-based Non-Orthogonal Multiple Access (NOMA) networks over Rayleigh fading channels. To achieve this, we introduce a Simultaneous Wireless Information and Power Transfer (SWIPT)-enabled Two-Way Relay (TWR) system.

9p viyoko 01-10-2024 2 1   Download

We also applied our proposed model to a real life system of an islanded MG at small-scale with demand, PV power, and WTG power forecast, and the DEG output power is control variable. The results of test system have demonstrated the effectiveness of the proposed method.

9p viyoko 01-10-2024 4 2   Download

This paper proposes a method to identify the optimal operating point fora photovoltaic power system. With theinformation on the power's solar irradiance, the temperature at P-N junction, and the generated power limit, an algorithm is proposed to calculate points on the voltage-power curve based on an utterly mathematical model of the generation, iterative,and bisectional techniques.

5p viyoko 01-10-2024 1 1   Download

This thesis is dedicated to study how the charging behaviours of plug-in hybrid vehicles affect the local distribution network. This study focuses on two issues: the power loss and charging cost optimization. The multi-objective particle swarm optimization technique is applied to achieve the optimal charging schedule, resulting in acceptable additional power loss ratio and charging cost.

89p runthenight07 01-03-2023 7 2   Download

Bài viếtnày trình bày cơ chế ảnh hưởng của PESHS đến tổn thất (điện áp và công suất) của lưới điện phân phối. Mô hình Tối ưu hóa công suất phản kháng mở rộng (Double Objectives Extended Reactive Power Optimization, DERPO) được xây dựng với hàm mục tiêu nhằm giảm thiểu tổn thất điện năng và giảm nguy cơ quá giới hạn điện áp có xét bổ sung các biến điều khiển gồm công suất tác dụng của thiết bị lưu trữ điện và công suất phản kháng của Pin quang điện (Photovoltaic, PV).

10p vimarissamayer 02-06-2022 24 4   Download

This study suggests an optimal coverage model aimed at the optimal deployment of Wireless sensor networks (WSN) based on improving the artificial bee colony (ABC) algorithm. The distance between the sensor nodes is regulated reasonably by implementing quasi-gravitation and quasi-coulomb power. Also, with a low regional repetition rate, the ABC algorithm can achieve fast optimization. Besides, to minimize node energy consumption, the sensing radius of WSN nodes is dynamically modified.

10p linyanjun_2408 21-04-2022 26 4   Download

This paper proposes a solution to the power grid system's reactive power optimization scheduling problem (RPSP) based on a novel Manta ray forging algorithm (MRFO) evolutionary algorithm. By applying the penalty function for the reactive power optimization model, the management of the constraints of the RPSP optimization formula is counting on for calculation.

10p linyanjun_2408 21-04-2022 16 1   Download

To study the scientific basis to build the optimal calculation model of electricity sales for the system of staged reservoirs under competitive power generation conditions in order to provide operational instructions in combination with the coordination chart deliver the full annual output contract and drive to the largest revenue.

27p hobbsandshaw 09-06-2021 16 4   Download

The objectives of the thesis are to study on a method to analyze a large-scale system into a number of relatively independent subsystems (interconnected subsystems). Then, the dissertation will focus on designing a decentralized control method for the large-scale system which has been decomposed into the interconnected subsystems.

28p capheviahe27 23-02-2021 40 4   Download

Vận hành kinh tế của hệ thống máy phát điện là một trong những vấn đề phổ biến trong hệ thống năng lượng. Trong bài báo này, một thuật toán mới được đề xuất đó là thuật toán tìm kiếm nhóm (Search group algorithm - SGA) để giải quyết các bài toán phân bố công suất tối ưu (Optimal power flow - OPF).

8p larachdumlanat127 02-01-2021 55 6   Download

Complex industrial systems often contain various uncertainties. Hence sophisticated fuzzy optimization (metaheuristics) techniques have become commonplace; and are currently indispensable for e ective design, maintenance and operations of such systems. Unfortunately, such state-of-the-art techniques suffer several drawbacks when applied to largescale problems.

18p nguathienthan9 08-12-2020 20 1   Download

Proposed solutions to improve the calculation speed for total transmit power minimum problem in multi-antenna wireless transmission network by using optimization techniques.

27p gaocaolon6 30-07-2020 41 3   Download

The objective of the thesis is to design a solar power system with optimal power in order to enhance the opening efficiency of this system.

35p gaocaolon6 30-07-2020 14 1   Download

The goal of this study is to look after the amount of information that is mandatory to get a relevant parameters optimisation by data assimilation for physical models in neutronic diffusion calculations, and to determine what is the best information to reach the optimum of accuracy at the cheapest cost.

8p christabelhuynh 31-05-2020 17 2   Download

The paper focuses on the recent methodological advances suitable for nuclear heating measurements in zero power research reactors. This bibliographical work is part of an experimental approach currently in progress at CEA Cadarache, aiming at optimizing photon heating measurements in low-power research reactors.

17p christabelhuynh 30-05-2020 15 0   Download

In this research, we lay out a model to estimate the effect of rainfall by simulating the actual physical processes of the rain drops forming on the surface of the blades of a vertical-axis wind turbine (VAWT), thereby determining optimal wetness, then power and performance respectively. This could have an effect on the control strategy necessary for designing and controlling wind turbine.

11p abcxyz123_02 03-03-2020 31 1   Download

Objective of the thesis For the purpose of building a model of electrical generator for sea wave energy, the device operates efficient and in suitable to Vietnam's sea condition; determining the optimal damping coefficient of the generating motor, model parameters to received the maximum output power; design, fabrication of the electrical generator with the output voltages are 12 VDC, 220 VAC frequency 50 Hz and pure sine wave.

27p xacxuoc4321 08-07-2019 45 6   Download

In Design of high density transformers for high frequency high power converters, the abovementioned issues of high-frequency transformers are explored, particularly in regards to high-power converter applications. Loss calculations accommodating resonant operating waveform and Litz wire windings are explored. Leakage inductance modeling for large-number-of-stand Litz wire windings is proposed. The optimal design procedure based on the models is developed.

175p khoaicuto 19-03-2015 53 5   Download