A5085412243- Optimal Power Flow Distribution
- Microgrid Control and Optimization
- Smart Grid Energy Management
- Energy Load and Power Forecasting
- Electric Power System Optimization
- Power System Reliability and Maintenance
- Photovoltaic System Optimization Techniques
- Islanding Detection in Power Systems
- Stock Market Forecasting Methods
- Advanced Battery Technologies Research
- Energy Harvesting in Wireless Networks
- Manufacturing Process and Optimization
- Power Quality and Harmonics
- Power Systems and Technologies
- Integrated Energy Systems Optimization
- Terahertz technology and applications
- Plasmonic and Surface Plasmon Research
- Acoustic Wave Resonator Technologies
- BIM and Construction Integration
- Power System Optimization and Stability
- Photonic and Optical Devices
- Hybrid Renewable Energy Systems
- Human-Automation Interaction and Safety
- Electric Vehicles and Infrastructure
- Traffic Prediction and Management Techniques
Helmholtz-Zentrum Dresden-Rossendorf
2024
Ghulam Ishaq Khan Institute of Engineering Sciences and Technology
2021-2024
Aalto University
2016-2020
The ascending trend of photo-voltaic (PV) utilization on a domestic scale in Finland, calls for technical aspects review low voltage (LV) networks. This work investigates the factors that limit PV hosting capacity, realistic case networks, designed relative to different geographical areas Finland. A Monte Carlo method based analysis was performed, order quantify capacity formulated with balanced and unbalanced feeds, systems their limiting constraints were evaluated. Finally, effectiveness...
The low voltage (LV) network's constraints are prone to violations with the introduction of distributed energy resources at customer vicinity. This study assesses technical aspects realistic Finnish distribution network varying photovoltaic (PV) penetration and quantifies hosting capacities (HCs) different regions. Moreover, maximize HC, having overvoltage issue, control strategies employed comprising on-load tap changer (OLTC), reactive power (RPC) inverters, reinforcement (NR), hybrid...
The direction taken towards sustainable power system and renewable energy generation is now irreversible. grid needs to host more sources, such as solar power, tackle quality problems that come along with it. In this paper, firstly, the Hosting Capacities (HCs), of Photo-Voltaic (PV), were found for various regions their limiting constraints defined. Afterwards, comparison was made HC values obtained different voltage value standards defined by countries. Next, single-phase PV connection...
Power distribution networks are transitioning from passive towards active considering the incorporation of distributed generation. Traditional energy require possible system upgrades due to exponential growth non-conventional resources. Thus, cost concerns electric utilities regarding financial models renewable sources (RES) call for and benefit analysis prone unprecedented RES integration. This paper provides an evaluation photovoltaic (PV) hosting capacity (HC) subject economical...
In recent years, renewable energy sources, especially Photo- Voltaics (PVs), are being integrated into the Low-Voltage (LV) grid in massive numbers. Inherently, intermittent nature of PVs may cause power quality issues like voltage rise and flicker. Firstly, this paper investigates Finnish LV grids geographically dispersed areas, for flicker problem due to solar irradiance fluctuations. Secondly, instantaneous-active/reactive power-control methodology PV is proposed mitigation. It makes use...
Due to the penetration of Distributed Generation (DG), distribution systems are advancing towards smart grid technologies for voltage control strategies. In this paper, a Multi-Agent System (MAS) Based, two stage algorithm is proposed that removes inadmissible voltages on nodes system, in distributed manner. Furthermore, also minimizes overall losses. The scheme utilizes minimum data effectiveness method investigated by conducting simulations Matlab software, typical Finnish residential...
Abstract This paper presents practical implementation of a fault detection, localisation, and categorisation (FDLC) method in PV‐fed DC‐microgrid (DCMG). The DCMG is implemented by utilising group two DC nanogrids (DCNG) that have power control mechanism (PCM). FDLC uses voltage calculating circuit comprising single sensor diode network. Moreover, the architecture based on six statements extracted from investigation line to (L–L) ground (L–G) faults at DCNG cluster. PCM proposed system...
Efficient control of reactive power flow is required to maintain a stable system operation. Insufficient support may lead instability, incurring higher losses. Power systems frequently come across voltage level violations due the fluctuating load that results in under or over compensation power. In this paper effectiveness FACTS devices studied actual an industry. Comparison between three different techniques made terms analyzing parameters i.e. support, factor, and Three namely SVC, STATCOM...
The abundant solar energy we receive needs to be efficiently utilized for the green environment and benefit of mankind. This paper proposes a simple optimal power management system (PMS) DC-microgrid (DCMG). uses switching circuit which interfaces PV-array, DC-load, storage (ESS) in each nanogrid (NG) DCMG. overall DCMG consists cluster four NGs linked through common DC-bus with single ESS. proposed method not only offers PMS at NG, it also incorporates power-sharing capability among NGs....
The demand for energy around the world continues to increase at a very high rate. To sufficiently supply this demand, it is imperative employ efficient methods so that total costs fulfilling such in are minimized. achieve ambitious goal, paper proposes multi-agent reinforcement learning system time of use pricing based combined response and voltage control. For purpose, long short term memory network employed day-ahead load forecasting order remove future uncertainties. Q-learning algorithm...
Abstract For the past few years, addition of renewable energy sources has been on rise, but unregulated these can cause severe harm to grid. Therefore, it is necessary have a predefined limit for grid, beyond which no further renewables should be allowed without reinforcement. That called hosting capacity (HC), addressed in literature by search‐based methods with heavy computational burdens. This manuscript first presents framework find HC The same then applied 503 different simulated...
Generation expansion planning (GEP) is a primary and rigorous exercise in shaping the long-term decisions terms of capacity expansion, location technology power plants, to be committed for next 25–30 years, based on forecasted electrical demand. It non-linear, mixed-integer, stochastic, dynamic discrete optimization problem. The metaheuristics are deemed best techniques answer this multi-dimensional problem with large number complicated constraints. In work, least cost GEP solved using new...
Large number of photovoltaic (PV) installations can lead to the network constraints' violations that comprise voltage level outside statutory limits and equipment ampacity-limit violations. This study quantifies hosting capacities (HCs) Finnish LV networks their limiting constraints. A stochastic approach is implemented cover all probabilistic variables network. Geographically distinct rural, intermediate urban regions are studied with balanced unbalanced PV feed-in scenarios. Later, HC...
Terahertz high harmonic generation (THz HHG) is a common property of nonlinear systems. Recently it has been used to investigate fundamental principles that govern transport and dynamics in novel quantum materials like graphene, Dirac semimetals or high-temperature superconductors. Here, we report on the observation exceptionally large THz second third thin films highly conducting delafossite PdCoO$_2$ down low temperatures. The growth this material offcut substrate allows for significant...
The electric power industry has placed a high priority on reducing carbon emissions to mitigate their negative impact the environment and promote cost-effectiveness. To achieve this goal, is increasingly integrating renewable energy sources, such as solar wind power, into its expansion planning. However, effectiveness of these sources varies considerably depending location. minimize costs, study was conducted develop framework solve emission-constrained generation problem using GAMS...