power system 2021




Coordinated fuzzy logic‐based virtual inertia controller and frequency relay scheme for reliable operation of low‐inertia power system
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Coordination between protection and control devices is crucial for maintaining continuous operation of power systems. Existing strategies suffer from improper coordination of control and protection devices. Moreover, high penetration levels of renewable energy sources

Inferring power system frequency oscillations using Gaussian processes
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Synchronized data provide unprecedented opportunities for inferring voltage frequencies and rates of change of frequencies (ROCOFs) across the buses of a power system . Aligned to this goal, this work puts forth a novel framework for learning dynamics after small-signal

Reduction of Power system losses in Transmission Network using Optimisaion Method
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Power failure or incessant power failure in our country are caused by power loss, low power factor, overcurrent, over voltage to mention a few. power failure could be overcome by determining line losses, determining the phase values of the voltages at load buses

Unit commitment in a hybrid diesel/wind/pumped‐storage isolated power system considering the net demand intra‐hourly variability
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This paper presents a novel two-stage stochastic mixed-integer linear programming model for the generation scheduling of a hybrid diesel/wind/pumped-storage power system that considers the intra-hourly net demand variability during the first stage. The model aims to The paper presents a real-time error correction method that accurately estimates the primary quantity of an inductive instrument transformer that is, a voltage or current transformer based on a Dynamic-State-Estimation (DSE) optimization approach. The DSE error

Bulk power system availability assessment with multiple wind power plants.
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The use of renewable non-conventional energy sources, as wind electric power energy and photovoltaic solar energy, has introduced uncertainties in the performance of bulk power systems. The power system availability has been employed as a useful tool for planning

The Four Phases of Storage Deployment: A Framework for the Expanding Role of Storage in the US Power System
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This report is one in a series of NRELs Storage Futures Study (SFS) publications. The SFS is a multiyear research project that explores the role and impact of energy storage in the evolution and operation of the US power sector. The SFS is designed to examine the

A hybrid MFO‐GHNN tuned self‐adaptive FOPID controller for ALFC of renewable energy integrated hybrid power system
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This paper proposes a hybrid moth flame optimization generalized Hopfield neural network (MFO-GHNN) optimized self-adaptive fractional order proportional integral derivative (FOPID) controller for automatic load frequency control of multi-area hybrid power system

THE USE OF ENERGY STORAGE TO CONTROL THE ELECTRICAL LOAD OF THE POWER SYSTEM UKRAINE
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In the energy system of Ukraine in 20 the share of wind power plants (WP) and solar power stations (PV) in the structure of electricity production has doubled-to 6.8% with a total electricity production of 148.9 billion kWh. The installed capacity of these renewable power

Fault Tolerant Control Method of Power System of Tram Based on PLC.
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Due to the large fault classification granularity of tram power system there is still a problem that the gain coefficient is not reasonable in different control links, so a fault-tolerant control method of tram power system based on PLC is designed. First, the fault classification of theAbstract Supervisory and Data Acquisition (SCADA) systems control and monitor modern power networks. As attacks targeting SCADA systems are increasing, significant research is conducted to defend SCADA networks including variations of anomaly detection. Due to the

Parametric study and multi-objective optimization of a combined cooling, desalination and power system
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abstract Multi-generation system driven by alternative energies provides a promising solution for meeting the challenges of energy and fresh water with the rapid development of economy. In this paper, an innovative combined cooling, desalination and power (CCDP)

Performance evaluation of different structures of power system stabilizers
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The electric power from the system should be reliable and economical for consumers equipment satisfaction. An electric power system consists of many generators, transformers, transmission lines, loads, etc. For the power system network, dynamic performance and

Extended state observer based load frequency controller for three area interconnected power system
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In this paper, we develop a new extended state variable observer based load frequency controller (LFC) scheme for three-area interconnected power systems. The extended state observerbased load frequency controllers are developed which utilize disturbanceStable operation of the power system is one of the key factors for reliable and quality power supply. Major disruptions in the system operation mode (short circuits, outages of large generating units, transmission lines, etc.) cause significant changes in the parameters of

Assessment and Mitigation of Harmonic Distortion in Industrial Power System
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ED Mitiku, A Rahman, MM Abuhay xisdxjxsu.asia Abstract Nowadays Power Quality problems are an issue to the industries. As a result, many of the industries in Ethiopia faced with the problem of power quality, having various causes. This paper presents assessment and mitigation of harmonic distortion of the industry, ie Losses reduction initiatives in distribution systems have been activated due to the increasing cost of supplying electricity, the shortage in fuel with ever-increasing cost to produce more power, and the global warming concerns. These initiatives have been introduced to the

A New Adaptive Underfrequency Load Shedding Scheme to Improve Frequency Stability in Electric Power System
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Accepted: 25 MarchThis paper proposes a new adaptive underfrequency load shedding scheme (UFLS) to avoid frequency instability in electrical power system during abnormal wide area disturbances. The developed scheme is based on online monitoring of The detection of potential voltage collapse in power systems is essential to maintain the voltage stability in heavy load demand. This paper proposes a method to detect weak buses in power systems using two stability indices: the voltage stability margin factor (dS/dY) and

Why the Weather matters-The Coaction of Meteorological and Techno-Economical Parameters in Numerical Power System Models
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Page 1. DLR Institute of Networked Energy Systems Why the Weather matters The Coaction of meteorological and techno-economical parameters in numerical power system models Bruno Schyska EnergieSys-AI workshop 2021-04-2 onlineShort titleAuthorDate DLR.de/ve

Antlion Optimization Algorithm for Optimal Self-Scheduling Unit Commitment in Power System Under Uncertainties
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optimal and economic operation is one of the main topics in power systems. In this paper, a stochastic single objective framework for GenCoʼs optimal self-scheduling unit commitment under the uncertain condition and in the presence of SH units is proposed. In order to solve

8. Robust vessel power system operation studies using ship emulator
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It is not possible to have diesel engines or propeller drives with actual propeller and environment in the LUT laboratory. However, setups with different electrical networks, battery energy storage system (BESS) and frequency converter driven motors can be

Enhancement Stability of the Power System Using Static Synchronous compensators Connected in Different Formats
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The research strategy focuses on the effect of connecting a STATCOM to mend critical- clearing-time (CCT) for the studied system and its transient stability. This paper targets to connect STATCOM in two situations, grouped and distributed. The first situation connectsWith the rapid economy development and increasing power demand, in order to achieve data sharing and complementarity, accessing wireless sensor networks (WSN) to power data communication networks for transmission is facing huge security challenges. The trustPower System Stability is investigated by simulating a set of critical contingencies to determine whether the disturbances information to classify system states. Low frequency power oscillations that occur between remote generating pools or power stations, due to

Online monitoring of the power system stability based on the critical clearing time
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This work refers to the concept of online monitoring of generators dynamic stability based on the critical clearing time (hereinafter referred to as CCT). The CCT be considered a basic criterion of the dynamic stability of a synchronous generator. The work presents an

Coordinated Control of Virtual Power Plants to Improve Power System Short-Term Dynamics. Energies 202 1 1182
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The paper proposes a coordinated frequency control strategy for Virtual Power Plants (VPPs), with the inclusion of Distributed Energy Resources (DERs), eg, Solar Photo-Voltaic Generation (SPVG), Wind Generator (WG) as well as Energy Storage System (ESS). TheIn a given electrical system there was high demand of reactive power from the transformer which results in overloading of transformer. Traditionally, this problem is solved by adding a capacitor in parallel with the load in order to correct power factor as well as to minimize the

Primod A fundamental short-term model for power system analyses and multimarket price forecasting
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This report documents a short-term fundamental market model named Primod which was developed within the research project Pricing Balancing Services in the Future Nordic Power Market(PRIBAS). The Primod model forms, together with the existing EMPS andIn recent years, Internet of things (IoT) technology is the fastest growing technology which connects physical device or sensors to Internet. IoT devices collect the information from objects then store or transfer information over the Internet without help of any manual

Power System Stability Optimization Using Proportional-Integral-Derivative (PID) Controller
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Instability has become an issue of concern in the operation of power system due to the increasing stress on power system networks. The system suffering from incessant power failure as a result of fault on either the generating plants or on the transmission lines is

The Yucatan Peninsula Energy Assessment: Pathways for a Clean and Sustainable Power System
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Executive Summary The Yucatan peninsula region ( Peninsula ) is the Easternmost region in Mexico and comprises three states: Campeche, Yucatán, and Quintana Roo. The Peninsula has abundant natural resources, numerous archeological and protected areas The dimension of power generating system and complexity of power system increases because of rapid growth in population and technology advancement. The main aim of power generating system is distributing power supply with better quality to all customers. The

Investigation of the Impact of Distributed Generation on Power System Protection
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Integration of Distributed Generation (DG) on distribution networks has a positive impact which includes the following: low power losses, improved utility system reliability and voltage improvement at buses. A real distribution network is radial in which energy flow is

Power System Oscillation Damping Model
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Operating electrical power system in a large scale can disturb the stability of the rotor of the synchronous generator on the generating side which can result in failures. This research is intended to investigate the effect of dynamic load parameter on power system oscillation

Optimal Power Flow in Power System Considering Wind Power Integrated into Grid
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This paper implements a new metaheuristic, called Equilibrium optimizer (EO), to find out the optimal results for a modified Optimal Power Flow (OPF) problem considering Wind turbine (WT) located at a load node. This paper runs EO for different versions of OPF problem

Design of Power System Stabilizer for Multi-Machine Systems Using Modified Swarm Optimization Algorithm with Wind Energy Generation
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Abstract Autonomous Group Particle Swarm Optimization (AGPSO) algorithm is exemplified in this article for ideal Power System Stabilizers (PSS) plan in a poly-machine control system joined with wind energy generation. The PSS‟ s structure fine-tuning issue is detailed as an

Improving the performance of power system protection using wide area monitoringsystems
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Wide area monitoring (WAM) offers many opportunities to improve the performance of power system protection. This paper presents some of these opportunities and the motivation for their development. This methods include monitoring the suitability of relay characteristics

A UNIFIED ELECTRIC POWER SYSTEM AND ELECTRIC PROPULSION SYSTEM OF THE PASSENGER SHIP KNYAGINYA OLGA TRIALS RESULTS
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The experience and results of dock and sea trials of the unified electric power system with electric propulsion system of the passenger ship Knyaginya Olga , which is the first river vessel where the electric power system with electric propulsion system is installed, are

An Intelligent Energy Management System for Ship Hybrid Power System Based on Renewable Energy Resources
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ABSTRACT A hybrid ship power system with fuel cell and storage system batteries/ supercapacitors can be developed by adding renewable energy sources. Adding PV to the hybrid system enhances the systems reliability and dependability. A high-level control