2011 8th International Conference on the European Energy Market (EEM)最新文献_第8页

Optimization of power system controller parameters using Eigen value sensitivity and linear programming 基于特征值灵敏度和线性规划的电力系统控制器参数优化

2011 8th International Conference on the European Energy Market (EEM) Pub Date : 2011-05-25 DOI: 10.1109/EEM.2011.5953061

H. Hassan, M. El-Metwally, A. El-Emary, H. Fakhry, F. Chaaban

{"title":"Optimization of power system controller parameters using Eigen value sensitivity and linear programming","authors":"H. Hassan, M. El-Metwally, A. El-Emary, H. Fakhry, F. Chaaban","doi":"10.1109/EEM.2011.5953061","DOIUrl":"https://doi.org/10.1109/EEM.2011.5953061","url":null,"abstract":"This paper presents a modified technique for the tuning of power system controller parameters in order to improve the power quality and dynamic stability of the system. The technique uses symbolic Eigen value sensitivity analysis and linear programming approach to determine the optimum value of controller parameters in the system. The main objective function aims to shift critical Eigen values to the left of the imaginary axis in the s-plane, as far as possible. The proposed method presents new constraints including a new formula for convergence and a controlling parameter to reduce the effect of numerical approximation resulting from the linearization of the objective function. Proper selection of the most effective parameters to be tuned is also performed. The proposed technique is general, effective and simple to apply using the developed MATLAB-SIMULINK software program which has a friendly user interface. A case study is considered which is a single synchronous machine connected to an infinite bus-bar through a transmission line equipped with a Power System Stabilizer (PSS). Simulation results verify the validity of the proposed technique in enhancing system stability.","PeriodicalId":143375,"journal":{"name":"2011 8th International Conference on the European Energy Market (EEM)","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125245348","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

A quantitative analysis of the electricity market in Switzerland 瑞士电力市场的定量分析

2011 8th International Conference on the European Energy Market (EEM) Pub Date : 2011-05-25 DOI: 10.1109/EEM.2011.5953141

G. Caro, J. Cornel, M. Hildmann, D. Daly, Florian Herzog

引用次数: 7

Optimal switch placement in distribution power system using linear fragmented particle swarm optimization algorithm preprocessed by GA 基于遗传算法预处理的线性碎片粒子群优化配电网开关布放算法

2011 8th International Conference on the European Energy Market (EEM) Pub Date : 2011-05-25 DOI: 10.1109/EEM.2011.5953070

S. Golestani, M. Tadayon

{"title":"Optimal switch placement in distribution power system using linear fragmented particle swarm optimization algorithm preprocessed by GA","authors":"S. Golestani, M. Tadayon","doi":"10.1109/EEM.2011.5953070","DOIUrl":"https://doi.org/10.1109/EEM.2011.5953070","url":null,"abstract":"In recent years, Distributed Generation (DG) has become an efficient alternative to traditional distribution systems, therefore new algorithms should be able to solve problems in presence of DGs. Reliability improvement and cost reduction are two important goals of utilities which are usually in opposite of each other. The Islanding operation scheme is dynamically formed when fault occurs, which is based on the location of the fault, location of switches and the actual status of distribution network operation before fault occurs. Optimal allocation of switches in distribution power systems can improve reliability of a power system by reducing the total time of fault detection, isolation and restoration. In this paper, a three-state approach inspired from the discrete version of a powerful Particle swarm optimization (PSO) algorithm is developed and presented to determine the optimum number and locations of two types of switches (sectionalizing and breaker switches) in radial distribution systems. The novelty of the proposed algorithm is a new linear method for fragmentation particles and probability calculation of switch type offer for each candidate locations. Genetic preprocessing algorithm is used in proposed algorithm for generating suitable first population. It enhances the PSO algorithm and decreases time of optimization. RBTS-BUS4 test system indicates advantages of the algorithm.","PeriodicalId":143375,"journal":{"name":"2011 8th International Conference on the European Energy Market (EEM)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124787325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 27

Review paper on wind power impact on operation of reserves 风电对储备运行影响的综述

2011 8th International Conference on the European Energy Market (EEM) Pub Date : 2011-05-25 DOI: 10.1109/EEM.2011.5953136

C. Hamon, L. Soder

引用次数: 7

Environmental dispatch of the portuguese power system for CO2 emissions reduction 葡萄牙电力系统二氧化碳减排环境调度

2011 8th International Conference on the European Energy Market (EEM) Pub Date : 2011-05-25 DOI: 10.1109/EEM.2011.5953043

S. Faias, J. D. de Sousa, R. Castro

引用次数: 9

Electricity spot market simulation involving bilateral contracts hedging 涉及双边合约套期保值的电力现货市场模拟

2011 8th International Conference on the European Energy Market (EEM) Pub Date : 2011-05-25 DOI: 10.1109/EEM.2011.5952994

G. Knežević, S. Nikolovski, P. Maric

{"title":"Electricity spot market simulation involving bilateral contracts hedging","authors":"G. Knežević, S. Nikolovski, P. Maric","doi":"10.1109/EEM.2011.5952994","DOIUrl":"https://doi.org/10.1109/EEM.2011.5952994","url":null,"abstract":"The traditional electric companies operated as a regulated monopoly are separated in those for generation (GenCo), transmission (TransCo) and distribution (DisCo). Demand companies (DemCo), ISO (Independent system operator), and regulator are new companies which enable function of restructured electricity market. Regarding the time dimension, wholesale electricity markets are divided into the two groups: spot market and bilateral electricity market. A bilateral contract is an agreement between two parties to exchange electric power under a set of the specified conditions such as MW amount, time of delivery, duration, and price. Forward contract price predictability is the great advantage to spot price volatility, contracted parties are in that way hedged against such a risk, but the forward contracted price may be disadvantageous compared to the spot price. Generator and load can conclude a mutually beneficial and risk tolerable forward contract. In order to investigate GenCo strategies and possible benefit of bilateral agreement for two agents, model of electricity market with 6 GenCos and 5 DemCos is made in EMCAS. Three scenarios are simulated: first one is the base case where all GenCos are applying production cost strategy; in second case one GenCo is applying price-probing strategy; third scenario is case where bilateral forward agreement is conclude between one GenCo and one DemCo. Comparisons of the results are presented.","PeriodicalId":143375,"journal":{"name":"2011 8th International Conference on the European Energy Market (EEM)","volume":"231 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120961883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Locational signals in electricity market design: Do they really matter? 电力市场设计中的位置信号:它们真的重要吗?

2011 8th International Conference on the European Energy Market (EEM) Pub Date : 2011-05-25 DOI: 10.1109/EEM.2011.5953086

S. Hadush, P. Buijs, R. Belmans

引用次数: 6

Short term constraints for a long term joint energy and reserve equilibrium 长期联合能源和储备平衡的短期约束

2011 8th International Conference on the European Energy Market (EEM) Pub Date : 2011-05-25 DOI: 10.1109/EEM.2011.5952986

J. Villar, F. A. Campos, C. Díaz

{"title":"Short term constraints for a long term joint energy and reserve equilibrium","authors":"J. Villar, F. A. Campos, C. Díaz","doi":"10.1109/EEM.2011.5952986","DOIUrl":"https://doi.org/10.1109/EEM.2011.5952986","url":null,"abstract":"The increasing penetration of interruptible sources of energy is making security of supply a key aspect of present and future networks management, and reserves markets are gaining significant relevance. Demand representation used in traditional long term market models normally consists in a set of non chronological demand levels corresponding to hours with similar demand values. However, reserve issues are closely related with short term constraints (such as ramps), and this lack of chronological coupling does not allow for an appropriate representation of these technical constraints. This paper presents a joint energy and reserve conjectural equilibrium model that provides signal prices for both commodities and computes productions accordingly by satisfying system demand and reserve requirements. Generation is represented at a technological level, and water contributes to energy and reserve requirements with daily constraints. To reduce the feasible region, clustering is used to simplify hourly demand series into only a few daily patterns. In addition, keeping the link between hours and demand levels allows the model to combine short term technical constraints with traditional long term strategic planning constraints.","PeriodicalId":143375,"journal":{"name":"2011 8th International Conference on the European Energy Market (EEM)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122010917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Evaluation of the energy policy for Lebanon 评价黎巴嫩的能源政策

2011 8th International Conference on the European Energy Market (EEM) Pub Date : 2011-05-25 DOI: 10.1109/EEM.2011.5953095

R. Ghajar, H. Hamdan

引用次数: 5

Getting back to scenario planning: Strategic action in the future of energy Europe 回到情景规划:欧洲能源未来的战略行动

2011 8th International Conference on the European Energy Market (EEM) Pub Date : 2011-05-25 DOI: 10.1109/EEM.2011.5953118

Henrik Blomgren, P. Jonsson, F. Lagergren

{"title":"Getting back to scenario planning: Strategic action in the future of energy Europe","authors":"Henrik Blomgren, P. Jonsson, F. Lagergren","doi":"10.1109/EEM.2011.5953118","DOIUrl":"https://doi.org/10.1109/EEM.2011.5953118","url":null,"abstract":"Scenario planning is a commonly used method in order to analyse complex aspects of the energy system. Historically it has been an important tool to prepare for long-term action. Today however, due to the deregulated market, it could be assumed that scenario analysis is abandoned. Maybe more (the only) attention is on short-term action. This paper presents a review over the time period of 1970 to 2010 on scenario-planning articles. The overall purpose is to evaluate how historical scenario studies stand in a situation of today's deregulated energy markets. Articles surveyed are published in well-respected and internationally well-spread peer-reviewed journals. Focus is put on 1, when, and by whom, articles have been published 2, for what reasons projects have been taken and with what method 3, what aspect that have been in focus. The articles are also analysed in terms of possible use in today's deregulated situation. Three conclusions are drawn. Firstly, the main use of scenario planning still tends to be a support to political processes. Secondly, three major issues and drivers for change dominate when different aspects of the energy system are analysed in scenario projects: climate change, security in terms of demand/supply and economic development. Thirdly, it is concluded that scenario planning still tend to be of value when analysing the future of the deregulated energy sector in Europe. However, in order to be fully utilized for the future scenario methodology must take into account that energy industry actors are not being controlled by politics as they where during the regulated period.","PeriodicalId":143375,"journal":{"name":"2011 8th International Conference on the European Energy Market (EEM)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133738711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 14