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The liberalization of power markets has led to a paradigm shift in the scope of the generation and transmission expansion planning. The assessment of this issue is complex because of the uncertainties that usually determine the long-term evolution of the market. Moreover, and from the point of view of regulators and policy makers, an optimal assessment is of great interest because the lack of coordination...
A Microgrid (MG) has a major role in power system. Because of its numerous benefits, such as its ability to reduce environmental impact and enhance the reliability of a power system. Hence, Multi-MG (MMG) consisted of multiple MGs is being studied intensively. This paper proposes the optimal power exchange of MMG with hierarchical coordination. The whole system architecture consists of two layers:...
This paper reviews general problem of generation adequacy indices (GAI) assessment and load shedding management problem in particular. It's shown that mutual power aid strategies and load shedding strategies used in GAI calculations are the main reasons for the difference in results obtained by diverse GAI calculating software packages. The paper presents several load shedding strategies including...
In light of the inadequate state of Nigerias power sector in comparison to the US, this paper proposes a plug-and-play microgrid concept or Microgrid-as-a-Service (MaaS) for application in an urban Nigeria setting. We focus on an islanded microgrid setup wherein the microgrid will not need the grid-connectivity functionality, ceteris paribus. Under the MaaS plaform, customers can switch between the...
The main idea of the paper is to provide a detailed analysis of market set-ups in Europe, North America and Australia as well as to define obstacles and potentials for full market integration for renewable and distributed energy resources. Comparing rules and market operational principles from different continents, elaborated through examples of most evolved markets, indicates how different technologies...
With the recent trend towards deregulating the power systems around the world. This paper presents the computation of congestion cost through interior point optimal power flow algorithm by using incremental and decremental bid method. The primary objective is to use the existing available generation capacity to its maximum extent and operation of the power system in secure state. To evolve a systematic...
This paper proposed a non-cooperative game-theoretic method to study power trading modes and strategies in multi-microgrids system (MS) including controllable distributed generation (DG). Considering the influence of DG on MS trading strategy decisions, a strategic game-theoretic model was put forward under the system trading rules. The effects of the distribution system (DS) on microgrids trading...
Economic studies in power systems have gained more importance post deregulation. The number of generators participating in the power market have significantly increased over the past years. Smart grids are now enabling distributed generation resources to also participate in the power market. Many economic studies conducted on power system networks utilize legacy quadratic cost curves which are based...
We study decentralized power markets with strategic power generators. In decentralized markets, each generator submits its supply function (i.e., the amount of electricity it is willing to produce at various unit prices) to the independent system operator (ISO), who takes the submitted supply functions as the true marginal cost functions, and dispatches the generators to clear the market. If all generators...
A matchmaking based day-ahead market mechanism is proposed in this paper, in which daily residual energy quantity is the object of transaction and bidding is based on spread, i.e., the difference compared with the regulated electricity price. To accurately reflect the matchmaking rules and the exact information of the matching-pair, a novel matchmaking algorithm with differentiated weighting coefficients...
In smart grids, the current researches studies concerning how Distributed Energy Resources (DERs) could be initiated into the centralized electric power market. In this paper, we focus on the new framework for leading the small-scale DERs in intermediate bidding by assembling the varied DERs into the specific portfolio. We defined the 3 stakeholders in the arbitrage contract market for DERs. By analyzing...
In this paper, four practical and successful deregulated electricity markets: the old England & Wales Pool, the British Electricity Trading and Transmission Arrangements (BETTA), Nordic Pool and PJM interconnection will be briefly explained and discussed on their histories, structures, rules and also advantages and disadvantages. The old England & Wales Pool was a typical Pool type market...
This paper studies the impact of utility-scale microgrids on day-ahead (DA) markets, proposes a procedure to manage microgrids in daily operations of a DA market, and provides a guidance in planning new microgrids. As new utility-scale microgrids are being planned and built, the cumulative capacity of microgrids in the U.S. is expected to double in five years. In a region with a significant power...
The present work aims to analyze UK's and Brazil's wholesale electricity trading models. UK's model, also known as New Electricity Trading Arrangements (NETA), can be considered a reference for the present day electricity markets. Recently UK has implemented a market reform that, while maintaining UK's market structure, introduced several strong regulatory economic signals in order to foster new investments,...
Electricity systems require flexibility to maintain their operations. This can be provided by demand response (DR). Therefore, markets are evolving to be more open to DR. However, there still exist barriers for DR participation. These can be categorised into product, economic, technical and consumer barriers. On the other hand, there is a trend towards harmonising national electricity markets so that...
This paper defines a day-ahead micro-market structure and illustrates its capability of increasing distributed energy resources' integration. This micro-market mimics in the distribution level the structure of the current European day-ahead markets and their rules to introduce competition, and is based on the social welfare indicator. Micro-markets could overcome two major challenges of pool markets:...
This paper proposes an optimal transmission expansion planning (TEP) which is based on determining share of each line in merchandizing surplus (MS) of system, determining by Independent System Operator (ISO). The more share of a line in MS of system denotes the priority of a line for expansion. The procedure of determining MS of each line in a power system is based on determining the MS share of each...
This paper introduces a laboratory test-bench that is used to verify a novel wide-area load sharing scheme for synchronous islanding control. Many current mechanisms for islanding control rely on frequency droop. However, this approach does not provide optimal control as it is based on network conditions measured at individual generators with no input from any other parts of the network. The authors'...
Using production-cost model (PLEXOS), we simulate the Western Interchange (WECC) at several levels of the yearly renewable energy (RE) generation, between 13% and 40% of the total load for the year. We look at the overall energy exchange between a region and the rest of the system (net interchange, NI), and find it useful to examine separately (i) (time-)variable and (ii) year-average components of...
Storage devices are gaining interest as possible options to improve operation of ‘active’ distribution networks in presence of high level of distributed generation, especially from Renewable Energy Resources (RES). The Italian demonstrator of the GRID4EU project (www.grid4eu.eu) is testing in a real field an advanced voltage control for active MV networks. The controller is able to include a storage...
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