Designing reverse auctions for solar power as a potential energy access solution for the Nigeria power sector

The Nigeria Power sector is on the precipice of financial and technical collapse. Recovering the financial deficit of over US$3.1 billion created within three years (ex-post reform), and the struggle to increase the grid power access above 4000 MW for about 200 Million people are some of the key burning issues in the sector. Given that about 87 million people do not have access to the grid in Nigeria, this paper proposes reverse auction market design for decentralized offgrid solar PV deployment as a potential solution for the Nigeria Power sector.First, it reviews reverse auctions in SSA, the key market design variables and the requirements for a successful solar auction plus storage technology design. Second, it argues that reverse auctions can be successfully run in Nigeria with well-designed market variables. Third, it provides the market design variables adaptable to the Nigeria case to achieve a successful auction run. Finally, it argues that these variables should be built on a foundation of a robust institutional and regulatory framework to be successful. This paper thus recommends designing reverse auctions for offgrid/minigrid solar PV plus storage technology as a potential solution to increase power access and to attract investment considering the financial and grid constraints in the Nigeria Power sector. Furthermore, it recommends that grants for offgrid electrification with Solar Home Systems for rural areas should be further explored.     

Analysis - IF YOU CAN'T STAND THE HEAT...

The rise of e-commerce, Web portals, online payment and gaming transactions, and the burgeoning financial services sector are all placing high demands on the data center to increase the delivery of IT power. As the demand for extra capacity increases, so does the amount of heat generated. This has led to increasing energy costs which further exacerbates the fundamental issue of running a data center. To address the problem, innovative approaches to reduce heat emissions at source need to be developed     

Flexible open architecture design for power system control centers

That the new generation power system control centers need a paradigm shift in their architectural design to meet new challenges, is an established conclusion of many researchers. However, literature on comprehensive architectural design towards this direction is scarce. In this paper, an information architecture design is proposed for the power system control centers. Appropriate adoption of open standards such as the common information model (CIM) is endorsed. Further, initial development of an event information model for modeling high level power system events is mentioned. Proposed architecture focuses on the desired features such as openness, interoperability, flexibility, scalability, vendor independence and event orientation. The architecture comprises services arranged in layers, viz., data integration and access, event processing and plug-in services. The details of this architecture along with the intricate relationships between various layers and services depicting how the technologies could be integrated into a coherent whole are described in this paper. An illustrative example, from the Indian power sector domain has been used to demonstrate the usefulness of the proposed architecture.     

基于数学构造的矩阵变换器调制策略

针对矩阵变换器现有调制策略复杂、计算量大的问题,提出一种基于数学构造的矩阵变换器调制策略。该调制策略不仅省去了以往调制策略中对扇区的计算,算法简单,易于理解和实现,能够保证最大电压传输比0.866和输入功率因数可控;而且,该调制策略的构造方法具有通用性,对其他电力电子变换器调制策略的提出有指导作用。仿真和实验结果表明了这种方法的可行性和正确性。     

电力抢修生产车辆GPS调度管理系统的探讨

“GPS／GIS调度管理系统”是一套集计算机信息处理技术、网络通信技术、GPS卫星定位技术、地理信息系统、电子地图等技术于一体的综合应用系统。将其应用于电力抢修部门,可以提高抢修部门应对突发事故的能力,对于城市的安全和最大限度地降低供电事故损失起到了至关重要的作用。本文概括描述了GPS／GIS调度管理系统的设计思路和功能实现方法,使读者可以迅速了解本系统及其在抢修部门中的应用。     

电力抢修生产车辆GPS调度管理系统的探讨

“GPS/GIS调度管理系统”是一套集计算机信息处理技术、网络通信技术、GPS卫星定位技术、地理信息系统、电子地图等技术于一体的综合应用系统.将其应用于电力抢修部门,可以提高抢修部门应对突发事故的能力,对于城市的安全和最大限度地降低供电事故损失起到了至关重要的作用.本文概括描述了GPS/GIS调度管理系统的设计思路和功...     

基于SVPWM扇区号的三相变流器开路故障诊断

功率变流器是风力发电系统中电能变换传输的重要部件,其开路故障会造成风力发电系统非计划停机,因此对功率变流器开路故障的及时诊断尤为重要。文中分析了空间矢量脉冲宽度调制(SVPWM)在功率开关管发生开路故障前后其扇区受影响状况,以及基本电压空间矢量的变化。根据功率开关管故障前后SVPWM调制时扇区号的对比,提出一种能够对功率开关管开路故障进行判断以及定位的方法。相比于已有的诊断方法,该方法能够实现单管以及双管开路故障诊断,只需采集SVPWM调制时的扇区号单一变量,不需要增加额外的硬件设备,数据存储要求低,计算量小,易于实现。最后通过仿真及实验验证了该开路故障诊断方法的有效性与可行性。     

基于多周期GARCH-M模型的短期电价预测

电价的分布特性是电力市场风险管理和电力金融产品定价的重要依据。建立了一个采用虚拟变量和正弦函数来刻画现货电价序列多周期性特征的GARCH-M模型。该模型易于定阶、待估参数少,可同时处理电价序列的趋势变化、多周期、异方差及其与负荷之间的非线性相关性,具有一定的实用价值。对PJM电力市场历史数据的分析表明,电价分布的异方差和负荷的平方对电价均值具有显著的影响,电价序列具有周、半月、月、季、半年等多重周期和明显的波动集聚性。     

青海省电力公司财务管理系统联网及安全体系建设

文章详细叙述了青海省电力公司本部及所属基层单位财务管理系统联网运行情况,以及为保证财务网络及数据安全所采取的主要技术手段、实现方式和主要特点。通过财务系统的联网运行,加强企业资产负债管理、内部结算、财务分析等方面管理,并利用网络进行全面、科学的财务管理,丰富和完善现有的财务管理学科体系,同时实现了省公司财务系统数据集中,方便省公司第一时间掌握财务状况,具有良好的经济效益。     

Energy bidding strategies for restructured electricity market

Many countries around the world have changed the economics of their electricity markets from monopolies to oligopolies in an effort to increase competition. The restructured electricity markets have introduced risk and uncertainty into a sector of the economy that was traditionally state-owned. Suppliers and customers use financial methods to manage the risk from market prices. The maximization of profit for power companies is highly associated with the bidding strategies. In order to maximize the profit, participants need suitable bidding models. In an open access electricity market, the bidding problem is a complicated task because of producer’s uncertain behaviors and demand fluctuation. Therefore, developing bidding strategy is extremely important for electricity market participants to achieve the maximum profit. This paper analyses a comprehensive literature on the state of the art research of bidding strategies in restructured electric power market.     

基于DTW算法与稳态电流波形的非侵入式负荷辨识方法

非侵入家用负荷识别技术可以指导家庭用户合理安排用电,提高用能效率,同时也为电力部门提供家庭用电的数据支持,有利于了解负荷用电规律及趋势,完善电力规划。由于家庭用户用电负荷的稳态特征值存在相似和无规律的问题,现有的方法多采用高级算法对所有的用电负荷组合进行训练。针对现有采用负荷稳态特征值方法进行识别所存在的不足,考虑到家用负荷稳态波形具有独特性和叠加性,提出了一种利用动态时间弯曲(DTW)算法计算与模版库波形的距离来识别家用负荷的辨识方法。首先,建立负荷稳态波形模版库;然后,在电压满足一定条件的情况下,测量家庭用户电流的稳态波形;最后,利用DTW算法计算出最小距离进行识别。     

可视化农网低压台区工程预决算管理软件

针对农村电网0.4 kV低压台区工程预决算存在的台区拓扑图形与预决算数据分离,影响预算和决算工作效率的问题,应用专家系统技术进行台区拓扑图形的自动识别,通过绘制台区的拓扑图形,结合典型设计数据库,自动生成台区的工程预算和决算数据,实现了可视化预决算管理。实际应用表明,应用本软件可以提高工作效率70%左右,准确率达到100%。该软件已经在实际中得到了广泛应用。     

Energy innovations through blockchain: Challenges,opportunities, and the road ahead

As a secure distributed ledger, blockchain has attracted a great deal of attention over the past decade. The power sector is not an exception to this phenomenon and industry leaders are looking into different ways to create value through this technology. Blockchain is a powerful enabling technology for decentralization of the energy systems of the future. Although this technology can be applied to a wide spectrum of applications in the power sector, many challenges and limitations are still needed to be addressed before its full implementation into grid operations. This paper presents energy innovations through the blockchain technology and addresses the barriers that preclude the power sector from large-scale, full-scope adoption of this technology. The emerging blockchain trends in near future will be further discussed and its potential in facilitating a secure, decentralized energy trading platforms will be investigated in this paper.     

Exploring the Impact of Systems Architecture and Systems Requirements on Systems Integration Complexity

The need to perform faster systems integration of complex systems require the architect and design team to understand how the selected architecture and design components will impact the systems integration processes complexity (or difficulty). Systems integration process complexity is an outcome of the interaction between degree of feasibility and level of effort required to understand, describe, implement, manage, and document the systems integration process for a given system development and operational environment. This paper analyzes the cause-and-effect relationships between the system requirements, architecture and the systems integration processes complexity. In order to address systems integration issues upfront in the design phase it is necessary to determine if the architecture and design of components, subsystems, processes, and interfaces impacts (and to what extent) systems integration process complexity. This paper also defines and analyzes the impact of the different system architecture and requirements factors on systems integration process complexity. A research framework is developed to understand the cause-and-effect relationships between system requirements, architecture, and integration process. Finally, the paper proposes recommendations based on the causality results. These conclusions are based on research undertaken by the authors on eight development projects in the government sector.     

From test stations to commercialization within a decade at Hydrogenics

As a relatively young company, Hydrogenics has quickly established itself as a key player in the world's rapidly emerging hydrogen fuel cell sector. The unique technology expertise and business development strategies assembled by its founders have enabled the company to be recognized as one of Canada's fastest growing companies over the last five years, and has helped it to build important relationships globally with both industry and government. The founders' strategy is a three-pronged approach to developing fuel cell technology and commercial applications in an economically sustainable way, to drive commercialization and broad adoption. The Toronto-based company has also been very successful in using demonstrations of its technology to further the industry and its business. All this has provided both the financial stability and technological expertise to ensure that Hydrogenics is working at the forefront of the industry as it progresses quickly towards commercialization.     

基于双链区块链的电力数据资产交易系统架构

为解决当今电力数据资产管理在数据共享、数据交易、数据安全等方面存在的问题,实现电力数据资产的智能管理,充分挖掘电力系统数据资源价值。首先结合电力企业现有数据采集和应用方式,分析了电力系统数据资产管理的问题;总结分析以往区块链数据交易的应用,提出交互式双链区块链的概念,并结合生物遗传学原理提出其运行机理和控制策略。交互式双链区块链将两条链之间的交互过程类比为遗传学中转录、翻译、表达调控和逆转录的过程。该平台架构能较好地解决电力数据资产交易中的安全性和复杂度问题,为电力数据资产交易平台架构提供了解决方案。     

Evaluation of a payments proposal for blackstart services in the Colombian electricity system: A system dynamics approach

All electrical power systems require some contingency arrangements to enable a restart in the unlikely event that all or a key part of the system shuts down. The process of restoring the power system is commonly referred to as blackstart. Not all power generators have, or are required to have blackstart capability. We propose a market-based scheme for blackstart services in the Colombian electricity sector where it has been an unregulated ancillary service. In this study, a system dynamics model is developed to better understand and analyze the behaviour of such a market in the long term. The developed simulation model uses a 20-year planning horizon and the analysis covers most elements of the proposed market for provision of blackstart services, including price behaviour, investment, installed capacity, and potential shortfalls. The simulation results show that the proposal for a dynamic market for blackstart services is stable and viable over the time period investigated.     

透过电力看经济--宏观调控重要性研究

电力与经济发展密切相关.电力弹性系数反映了电力增长速度与国民经济增长速度的相对数量关系.电力弹性系数的数值大小及其变化隐含了许多相对数量关系,对应了许多不同的电力及经济发展状况.电力数据可以实时准确地反映经济发展的某些特征.尽管电力只是经济系统的一部分,但是它的变化可以起到警示作用,引起我们的重视.对此,本文引入定理--电力弹性系数小于1,经济系统才能高效运转.因此,我们可以透过电力视窗,通过电力弹性系数本身的数值变化来分析经济发展中的优势及隐形问题,通过宏观调控、政策引导,达到经济可持续发展的目标.     

基于社会结构理论的能源数字化产品探索

随着能源领域的加速变革,能源互联网的建设将引领能源领域布局新产业,推动数字化转型。能源云平台的建设与运营已积聚包含电、水、冷、热等多种类型的海量能源数据,利用大数据和人工智能技术,以社会热点、用户需求为导向,为了最大限度发挥能源数据的价值,通过依托中国社会结构的理论基础,挖掘能源数据潜力,在社会治理、经济发展、环境保护等多种维度,形成如电力经济指数、复工复产指数、能耗分析等多种形式的数字化产品,可有效促进能源产业上下游价值共创共享,催发新的能源生态关系和治理体系,为能源数字化转型提供有效途径,助力社会经济的高质量健康发展。     

越南电力发展及投融资近况

越南电力工业的快速发展为我国电力集团公司与其开展国际合作奠定了坚实的基础。为了使我国电力集团公司在越南进行更有效的投资合作．对越南电力工业的电源发展、电网发展和投融资近况进行了全面介绍．为我国电力集团公司在越南进行投资提供一定的借鉴参考。