广西洛东水电厂增机扩容可行性设计

通过对洛东水电厂的来水量、地质和经济指标等技术资料的分析,认为采用灯泡贯流式机组扩大其装机的容量是可行的。并介绍了洛东水电厂增机扩容的可行性设计情况。     

长输管线变电所备用电源自动投入系统的改造

根据管道储运公司下属的各变电所目前的运行方式以及备用电源自动投入系统(以下简称“备自投”)的运行情况，指出了备自投使用中的不足之处，并通过增加对应断路器的辅助触点来完善备自投，使变电所运行更加可靠。     

The importance and the policy impacts of post-contractual opportunism and competition in the English and Welsh non-fossil fuel obligation

The non-fossil fuel obligation (NFFO), which consisted in a competitive auction for the deployment of renewable electricity, was the main policy for almost a decade in England and Wales. Once also used in Ireland and France, it has recently been abandoned in all countries. Many critics of the NFFO have focused on its inability to develop a national industry and promote a climate of stability among investors. This paper focuses on the incentives faced by developers bidding for a NFFO contract and shows that the low deployment rate under this scheme is likely to have been a predictable outcome of how the policy was structured and implemented rather than an unfortunate accident. The importance of the NFFO goes beyond the lack of an intense deployment of renewable electricity generation observed in the years in which the policy was on place. In fact, the NFFO has contributed to: promoting hostility against wind farms; creating false expectations of a price competitive renewable electricity sector; creating a playing field giving advantages to big players; preventing the creation of a wide renewable lobby coalition and the effective solution of planning constraints encountered by several renewable developers.     

The determinants of cost efficiency of hydroelectric generating plants: A random frontier approach

This paper analyses the technical efficiency in the hydroelectric generating plants of a main Portuguese electricity enterprise EDP (Electricity of Portugal) between 1994 and 2004, investigating the role played by increase in competition and regulation. A random cost frontier method is adopted. A translog frontier model is used and the maximum likelihood estimation technique is employed to estimate the empirical model. We estimate the efficiency scores and decompose the exogenous variables into homogeneous and heterogeneous. It is concluded that production and capacity are heterogeneous, signifying that the hydroelectric generating plants are very distinct and therefore any energy policy should take into account this heterogeneity. It is also concluded that competition, rather than regulation, plays the key role in increasing hydroelectric plant efficiency.     

Harmonization of renewable electricity feed-in laws in the European Union

This paper focuses on the harmonization of feed-in laws in the European Union as a support mechanism for the promotion of renewable electricity. In particular, it proposes a methodology for harmonization based on a feed-in law with a modular and transparent premium for renewable electricity producers. This premium considers technology costs, some grid services, political incentives and national priorities. The proposed approach includes flexibility mechanisms to update and revise premiums, to avoid windfall profits for producers, and to share technology innovation benefits with electricity consumers while maintaining incentives for innovation. Our approach is based on the review of the main features of the German and Spanish feed-in laws, and takes into account other necessary considerations for harmonization, such as grid access, funding, definitions and standards, ownership of rights derived from renewables, and exceptions for small non-commercial producers and energy-intensive industries.     

分布式供电和冷热电联产的前景

文中通过分布式供电特点及其发展趋势的阐述,强调了该供电特点是集中供电的重要补充,并且指出可再生能源将为分布式供电提供更为广阔的发展前景。同时,还认为分布式供电技术的主要发展方向为“冷热电三联产”技术。     

电力地理信息系统外业数据采集编码方案的探讨

本文介绍了配电电力地理信息系统外业数据采集编码的方法；其中包括线路编码、点编码、线路分界点编码、变电所的编码、开关的编码方法等。     

基于维间扩展和事务压缩的关联规则算法改进

Apriori是关联规则挖掘的经典算法,在利用该算法进行医疗数据挖掘的过程中,发现其频繁项集产生过程有一些不必要的开销,为此提出了改进算法Mypriori,利用维间扩展和事务压缩策略来提高频集发现的效率,并通过实验验证了算法的有效性.     

基于绿色证书交易机制的含风电场电力系统动态环境经济调度

为了促进风电消纳以及提高电力系统的经济性,构建基于绿色证书交易机制的含风电场电力系统多目标动态环境经济调度（DEED）模型,提出一种基于反向学习混沌搜索的OLCS-MOEA/D算法的DEED调度求解方法。首先,采用广义反向学习初始化种群提高种群多样性,并引入基于Logistic映射的混沌搜索算法以增强算法局部搜索能力。然后,为了验证算法的性能,采用标准测试函数F1—F7进行测试,同时将该算法对模型进行求解,获得了比其他算法范围更广和分布均匀的Pareto解集前沿。最后,对基于绿色证书交易机制的动态环境经济调度与传统动态环境经济调度进行结果对比分析,通过仿真算例验证该模型和算法的有效性和优越性。     

基于交通信息和配电网全成本电价的电动汽车充电负荷调度方法

电动汽车的集中充电行为会在一定程度造成交通拥堵,为解决这一问题,综合考虑交通信息和电网信息,基于边际定价理论得到配电网节点边际电价和交通阻塞成本,构建电动汽车充电的全成本电价模型。在此基础上,提出一种考虑交通信息和配电网全成本电价的电动汽车充电负荷调度方法。通过仿真算例验证,该方法在满足电动汽车充电需求的同时可以有效缓解交通拥堵。