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Vehicle-to-Grid (V2G) systems are an emerging concept of utilizing the battery storage of electric vehicles (EVs) for providing power system regulation services. This technology could be used to balance the variable electricity generated from various renewable energy sources. This article considers a model of an aggregated electric vehicle based battery storage to support an isolated power system...
This paper illustrates the problems associated with using Norton equivalent models to represent single-phase nonlinear loads. The study is conducted with a specially-developed harmonics testing station that uses feedback to drive the load voltage to a desired target waveform. We apply various voltage waveshapes with 5% THDv to several types of single-phase nonlinear loads which allow us to compute...
The electric power industry is and will continue to be a primary focus of existing and future greenhouse gas (GHG) emissions regulations. Different from other air pollutant regulations such as sulfur dioxide (SO2) and nitrous oxides (NOX), GHG regulations have the potential to significantly affect electric power system dispatch and operations soon, so the implications are significant enough to warrant...
Energy saving mechanism is the reason behind this research project that led us to design, develop and build a new evaporative air cooler unit with high efficiency and low power consumption. This was done by designing a new water distribution system that eliminated the water pump of the standard unit and modifying its mechanical parts. Also, design of an intelligent controller was added to optimize...
Since 2004 changes in the regulatory framework of the Chilean public and electricity sectors have been taken place (19940 law in March 2004). Transparency rules must be following by the market agents in pricing procedures of the electricity market. Consequently, technical, economical, and reliability data of the Chilean power system are available for simulation and optimization purposes. The Chilean...
The active power produced by wind generators is subject to fluctuations due to the stochastic nature of wind. Depending upon the size of the wind farm and the network to which it is connected, active power variations may result in frequency deviations. This can trigger frequency protection devices and lead to undesirable unit trippings. This paper proposes the addition of a small supercapacitor at...
This paper presents an optimal tuning of Power System Stabilizers (PSS) for a multi-machine power system using Population-Based Incremental Learning (PBIL) algorithm with adaptive learning rate. The proposed (APBIL) algorithm can adjust the learning rate automatically according to the degree of evolution of the search. The objective of the design is to achieve adequate stability over a wide range...
Power Systems (PS), have been affected by substantial penetration of Distributed Generation (DG) and the operation in competitive environments. The future PS will have to deal with large-scale integration of DG and other distributed energy resources (DER), such as storage means, and provide to market agents the means to ensure a flexible and secure operation. Virtual power players (VPP) can aggregate...
This panel session will highlight the market impacts of integrating large-scale variable generation into wholesale electricity markets. The focus will be on examining the impacts of variable generation on market price volatility and the resulting impact on market behavior. Variable generation affects day-ahead and real-time energy markets, as well as markets for ancillary services. Market price volatility...
With more and more photovoltaic (PV) panels, energy storage devices and other small generators being put into service, it is necessary to integrate them into power systems. Grid integration provides a reliable means for customers to use renewable energy such as solar at its maximum and to use other sources as backup. Inverters are widely used as interfaces for these distribution resources. In this...
This paper presents an infrastructure and laboratory implementation of a hardware test-bed system emulating alternate sources and conventional power plant emulators connected as a complete power system. The distributed generation components were connected to the test-bed to study the issues of connecting alternates and various types of loads during operations. The various sources and loads can be...
This paper describes the process required to adapt a conventional EMS Simulator for testing the Real-Time Electricity Market. The paper discusses the need and requirements for the simulator. CAISO's traditional EMS Dispatcher Training Simulator was modified and coupled with CAISO's Market Applications to act as a real time Market and Grid Operation Simulator. This new simulator provides realistic...
This paper proposes powering electric vehicles while in motion using inductive power transfer as means to address the inherent compromise that on-board electrical energy storage imposes on electric vehicle range and usage availability. Electric vehicles have been in the forefront of efforts to create transportation strategies that promise both energy-efficiency and long-term sustainability, but they...
With the advancement of sensor, communication and information technologies, Wide Area Monitoring, Protection and Control (WAMPAC) systems have been identified as the new generation of solutions to improve power system planning, operation, and maintenance. With huge amount of real-time data collected through distributed sensors deployed in a wide area, effective information presentation has become...
A simplified notional Next Generation Integrated Shipboard Power System (NG IPS) model is introduced. Based on the simplified system model, dynamic load management method is presented considering equality and inequality constraints of the system. The problem is formulated as a dynamic optimization problem to maximize the energized loads in the system without violating any constraint of the system...
This paper presents an early warning and preventive control system for dynamic security, which has been used in several provincial power grids in China. The framework and the main modules of the proposed system are introduced. The system architecture is based on a Multi-agent system which is developed by our team. The modules like on-line contingency assessment, total transfer capacity evaluation,...
This paper uses wide-area monitoring system (WAMS) recordings of dynamic events to assess the validity of large-scale time-domain stability simulations. In 2003 there were four power system monitors installed in the Energy transmission network ranging from Arkansas to New Orleans. We compared real and simulated measurements for a small set of events which had known causes. We applied an event location...
This paper presents the implementation of distributed energy resource management in smart grid operation. The approach utilizes the advantages of using multi agent systems for profitable operation of a smart grid in the energy market. The trading strategy adopted for the continuous double auction is a profit-maximizing adaptive bidding strategy based on risk and competitive equilibrium price prediction...
This paper presents a mathematical model to simulate and analyze electromagnetic transients in transmission lines using a mono-phase representation of these lines comparing results models with and without frequency influence in longitudinal parameters. For this, π circuits and state variables are used for composing a linear system that is solved through iterative numeric routines. This routine is...
This paper addresses the possibilities to exchange primary reserves within a multi-terminal HVDC (MTDC grid) system as well as between asynchronous ac grids connected through the DC grid. We propose a new method for the challenge of frequency control participation in ac grids connected by a multi-terminal HVDC system. Since HVDC transmission is very often used to exchange a contracted amount of bulk...
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