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In this paper, an agent-based negotiation method for bilateral contracts of energy is proposed. We construct similarity trees for the seller and buyer agents based on their preferences in the market, and then through a paring process find the most suitable pairs of sellers and buyers to negotiate for signing bilateral contracts. We continue this process until there are no buyers left in the market...
Frequency dynamics is one of the most important measures of an electrical power system. To better understand power system dynamics, accurately measured wide-area frequency is needed. The concept of building an Internet based real-time GPS synchronized wide area frequency monitoring network (FNET) was proposed in 2000, and the actual system has been deployed. The FNET system consists of frequency disturbance...
The electric power industry is facing unprecedented capable human resource shortage in all sectors of the work place-industry, academia and research institutions alike. Nevertheless, the search for engineers in this unique technical field have continuously been on the increase in recent years as a result of retirement of the older generation of competent labor force, new innovations in the industry...
Near real-time measurement-based electromechanical-mode estimation offers considerable potential for many future power-system operation and control strategies. Recent research has investigated the use of low-level pseudo random noise (PRN) probing signals injected into power systems to estimate the low-frequency electromechanical modes. Because of the random nature of a power system, estimating the...
This paper proposes a methodology of compatibility and interoperability evaluation for all-digital protection system through automatic application testing. The paper starts with the introducing of compatibility and interoperability evaluation issues, explaining the importance of application tests. The paper then defines the performance indices and compatibility indices as well as the evaluation methodology...
Due to the severity of system-wide power outages, though their probability of occurrence is slight, regulatory authorities require that a system restoration plan be drawn up and kept up to date at all times. The power outage that affected northeastern North America in 2003 proved the need for such a requirement. The particular structure of Hydro-Quebec's power system requires the use of a highly specific...
Load flow and optimal power flow (OPF) constitute core computations used in energy market operation. We considered different design partitions of computational tasks for a desktop computer equipped with field programmable gate array (FPGA). Load flow and OPF require lower-upper triangular matrix decomposition (LU). The number of clock cycles required for data transfer and floating-point operations...
This panel paper summarizes wind power development in recent years challenges of wind power integration. During the panel session, data mining and analysis techniques are proposed to help solve these challenges
Summary form only given. With the advent of ISOs , RTOs, reliability authorities, planning authorities, and others, maintaining large databases of system transmission network and generation models has become one of the critical factors in the success of such organizations. The size of the system model databases grow rapidly with the merging and consolidation of territories served by various entities...
This paper presents load profiles of electricity customers, using the knowledge discovery in databases (KDD) procedure, a data mining technique, to determine the load profiles for different types of customers. In this paper, the current load profiling methods are compared using data mining techniques, by analysing and evaluating these classification techniques. The objective of this study is to determine...
This paper presents an artificial feed forward neural network (FFNN) approach for the assessment of power system voltage stability. A novel approach based on the input-output relation between real and reactive power, as well as voltage vectors for generators and load buses is used to train the neural net (NN). The input properties of the feed forward network are generated from offline training data...
This paper presents a novel approach for topological observability analysis using heuristic rule based expert system. The observability problem is split in P-delta observability and Q-V observability by P-delta/Q-V decouple characteristic of power systems. A heuristic rule based expert system is developed for finding the existence of an observable spanning tree for P-delta measurement graph and Q-V...
The performance of a solar photovoltaic array statically placed on a large urban building is analyzed. The design of a custom monitoring system is described which measures electrical quantities as well as internal panel temperatures and solar intensity. The system is capable of remote interrogation over the Internet. Data collected over a period of two years at twenty minute intervals is used to evaluate...
Short term load forecasting (STLF) has an essential role in the operation of electric power systems. A developed case-based reasoning (CBR) system is presented to solve STLF problem with the aid of self-organizing maps (SOM) and fuzzy-rough sets method. CBR is composed of the steps of case representation, indexing, retrieval, and adaptation, and the key idea in CBR involves the use of already existing...
As the PJM footprint has expanded and the operations have grown, the volume of information received by PJM operators has increased significantly, and will likely continue to do so. This creates a situation where the operator can be overwhelmed by excessive information, making it difficult to identify, prioritize, and react to critical issues. This has the potential to impact reliability. If an operator...
In this paper we compare different congestion management schemes in liberalized electricity markets using an agent-based simulator. By modelling market participants as adaptive agents in oligopolistic structures, we consider the possibility of strategic behavior and the existence/exercise of market power. Generation companies submit their bids to the market place in order to maximize their payoffs,...
The main objective of this study is to develop an intelligent relay which is capable of protecting aerial lines from high impedance faults (HIFs). This investigation successfully develops a novel intelligent HIF detector that applies neutral line current to solve HIF problems. A self-turning scheme based on the chi-square distribution and 95 % confidence interval is first applied to set the threshold...
Electrical power is a base resource that supports social economic activity, and its stable and efficient supply is indispensable for continued economic development. Use of inverter technologies and so on have facilitated saving of energy with individual apparatus, there is considerable scope for saving energy in factories, buildings, stores and schools at the time of operation. In order to acquire...
This paper describes a novel protection scheme for a distribution network with distributed generators. The network is divided into several segments to facilitate fault isolation. Relay agents protecting the system are installed at points of interconnection between different network segments. These relay agents communicate with the neighboring agents through an asynchronous communication network. A...
It is now widely accepted within the electrical power supply industry that future power systems operates with significantly larger numbers of small-scale highly dispersed generation units that use renewable energy sources and also reduce carbon dioxide emissions. In order to operate such future power systems securely and efficiently it will be necessary to monitor and control output levels and scheduling...
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