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1.
随着电子技术、光缆传播技术等不断发展,我国变电站逐步实现了由传统向信息化的转变。继电保护装置是维持变电站正常、稳定、安全运行的重要因素,但随着信息化程度逐渐加深,旧的继电保护调试方案已经无法适应数字化变电站,数字化变电站继电保护调试技术的研究迫在眉睫。文章对数字化变电站继电保护调试技术应用进行了研究。  相似文献   

2.
伴随电力系统的快速发展,以及计算机通信技术的进步,变电站自动化技术应运而生,智能化技术对变电站的发展具有重要的意义.当今,继电保护技术向计算机化、一体化、网络化、以及智能化发展,这就给继电保护工作者提出了新挑战.文章简要论述了智能变电站的定义,分析了相应继电保护的调试方法,并以具体案例介绍及应用,目的在于进一步提高继电保护调试的能力,保证人们的用电稳定、安全.  相似文献   

3.
变电站的设备、装置、技术随科学技术的不断发展,逐渐革新并纳入了智能化技术,通过信息数字化传输完成了自动化运作,其中继电保护在智能变电站的正常运行中起到了重要的保护和控制作用。文章对智能变电站继电保护调试进行了探讨。  相似文献   

4.
随着我国智能变电站工程逐步在全国范围内得到推广,做好220kV智能变电站与常规变电站继电保护调试工作十分必要。随着科技的进步,电网迈入智能化时代,220kV智能变电站发展迅速。文章针对目前220kV智能变电站与常规变电站继电保护调试的现状以及存在的问题提出了几点有效的措施和建议。  相似文献   

5.
随着科学技术的不断发展,传统的继电保护试验工具已经不能满足现代微机继电保护的校验工作了,继电保护智能化测试系统便应运而生,并随着不断的发展和完善,在线路保护、主变差动保护、变电站综合自动化等领域得到了广泛应用。文章简述了继电保护测试系统及其结构组成,并分析了其作用和优异性。  相似文献   

6.
随着科学技术的不断发展,计算机已渗透到了世界每个角落。电力系统也不可避免地进入了微机控制时代,变电站综合自动化系统取代传统的变电站二次系统,已成为当前电力系统发展的趋势。未来继电保护技术发展的趋势是:计算机化,网络化,保护、控制、测量、数据通信一体化和人工智能化。  相似文献   

7.
随着科学技术的不断发展,计算机已渗透到了世界每个角落。电力系统也不可避免地进入了微机控制时代,变电站综合自动化系统取代传统的变电站二次系统,已成为当前电力系统发展的趋势。未来继电保护技术发展的趋势是:计算机化,网络化,保护、控制、测量、数据通信一体化和人工智能化。  相似文献   

8.
随着科学技术的不断发展,计算机已渗透到了世界每个角落.电力系统也不可避免地进入了微机控制时代,变电站综合自动化系统取代传统的变电站二次系统,已成为当前电力系统发展的趋势.未来继电保护技术发展的趋势是:计算机化,网络化,保护、控制、测量、数据通信一体化和人工智能化.  相似文献   

9.
莫异泉 《科技与企业》2014,(21):185-185
随着电网建设进程的不断加快,35kV变电站作为电网的重要组成部分,其继电保护好坏对于整个电网的正常运行及供电企业的发展有着不可或缺的作用。科学技术的发展,使得传统的继电保护技术、装置已经无法满足35kV变电站的运行及供电企业发展需要,先进的计算机技术和微型计算机设备正在融入35kV变电站的继电保护中。基于此,本文就35kV变电站微机继电保护进行分析与探讨。  相似文献   

10.
微机型继电保护装置的调试及问题解决对策   总被引:1,自引:0,他引:1  
田蕾 《民营科技》2010,(6):11-11
随着计算机技术的高速发展,随着电力系统的不断扩大、智能化,微机型继电保护装置在电力系统应用成为了必然,微机型继电保护装置在电力系统中的应用越来越广泛。总结微机型继电保护装置现场调试的一些经验,提出现场调试的调试步骤、注意事项以及常见问题的解决方法。  相似文献   

11.
This paper outlines the ICT statistical developments that the ABS has undertaken over recent years. These developments have been on both the supply side (ICT industry) and the demand side (use of IT by sector). The content of ABS ICT surveys has changed significantly over the last few years and are expected to develop further in line with industry changes and emerging policy needs.
Recent developments in household collections have been the inclusion of IT use questions in the 2001 Census of Population and Housing and in various ABS social surveys such as Children's Participation in Culture and Leisure Activities. Annual business IT use surveys are now conducted and include topics such as Internet commerce and IT security. Biennial ICT industry surveys are conducted to provide data on ICT production, imports and exports, ICT industry employment, performance and structure information. An Internet activity survey is run every six months and provides regional Internet access details and infrastructure details on Internet service providers.
A major development for 2002–03 will be the compilation of an ICT satellite account. ABS intends to produce an ICT Information Development Plan to guide its future statistical development work in the ICT field.  相似文献   

12.
Several US counties and local governments have recently considered a novel solution to the foreclosure crisis. They plan to use eminent domain to compel the owners of mortgage debt—and specifically of private‐label mortgage‐backed securities—to sell the debt to the government at a price reflecting the loan's market value. The government would then restructure the debt and resell it to new investors. The plans are striking because—in contrast to both development‐driven eminent domain and the federal subprime bank bailout—they would force investors to assume asset devaluation and increased long‐term risk. Notably, the plans have emerged as an instance of financialization‐focused politics in suburbs and suburban cities of color, specifically majority‐black and ‐Latino/a suburbs. Local support for the plans, we argue, is rooted in the long‐term disinvestment of these ‘suburbs of exception', which became targets of subprime lending and eventually sites where the ‘financial exception' has been localized. But these demographic shifts, fragmentation and fiscal pressures have at the same time created a suburban political terrain in which the plans have gained their strongest political support.  相似文献   

13.
Serendipity – the notion of making surprising and valuable discoveries – plays a major role in the success of individuals and organizations alike. Previous research has established the importance of serendipity and identified important individual- and organizational-level antecedents. However, the literature has been dispersed and the boundaries of the concept have been blurry, leading to a lack of conceptual clarity and structure, and thus limiting validity and managerial actionability. Based on a systematic literature review, I synthesize existing management-related research on serendipity and explicate the emergence and composition of serendipity in the organizational context. I first identify three necessary conditions that differentiate serendipity from related concepts such as luck or targeted innovation: agency, surprise, and value. Then, I draw from the literature on sensemaking, event-based theorizing, and quantum-based approaches to management to conceptualize the process of cultivating serendipity in the organizational context as a process of enabling potentiality and materialization, and develop a multi-level theory of (cultivating) serendipity. This conceptualization contributes to our collective understanding of how, why, and when (i.e., under what conditions) organizations can leverage the value in the unexpected, which opens up fruitful avenues for further research.  相似文献   

14.
NGOs in Bangladesh have been recognized as effective change agents in the socio-economic arena throughout the world. Their contributions in micro credit, non-formal education and primary health care are widely known. NGOs play a significant role in society. NGO accountability, as a result, has become a critical issue. NGO accountability in Bangladesh has been examined here in relation to patrons, clients and themselves. Of the three relationships only accountability to patrons is in a near satisfactory state. Accountability to clients is handicapped by lack of opportunities of beneficiaries to participate meaningfully in NGO policy making. Accountability to themselves is adversely affected due to the adherence to a strictly hierarchical system and the influence of founding and charismatic NGO leaders.  相似文献   

15.
There has been much discussion regarding the possible decline and weakening of national systems of human resource management (HRM). Yet, culture and institutions are often cited as the major stumbling blocks to this outcome. Such constraints may dissipate in the analysis, particularly if ‘regional clusters’ are considered where geographic and cultural closeness and ‘openness’ to similar economic pressures exist. In such cases, it might be postulated that convergence in HRM will occur. We argue that China, Japan and South Korea represent such a cluster. This article examines these countries, to see if a degree of convergence is taking place and if it is towards an identifiable ‘Asian’ model of HRM. A model of change is presented that distinguishes between levels of occurrence and acceptance. Details of the development and practice of HRM in each country are then set out. The article ends with a discussion and implications section and a brief conclusion.  相似文献   

16.
A new Office for National Statistics was created in the United Kingdom in 1996 following a series of developments designed to strengthen the relevance and integrity of statistics. This paper describes these fundamental changes and sets out a blueprint for future progress. It also sets current developments in the United Kingdom in an historical and international context.  相似文献   

17.
We have considerable understanding of the obstacles that women engineers encounter and the reasons that they leave the field, but we know less about what enables them to remain. Adopting an interpretivist approach, this article examines how a group of British women engineers in two FTSE 100 companies account for “staying on” in their male‐dominated work settings. We delineate four specific forms of help that facilitate women's retention in the field. We argue that exposure to help leads to women developing a habitus that enables them to continue working in engineering. To conclude, we draw on our findings to outline HR practices that will facilitate supportive relationships in the workplace and pave the way towards developing more positive organisational climates.  相似文献   

18.
杨明 《价值工程》2012,31(7):16-17
物流业经过诸多年的发展目前已经成为最热门的行业之一,物流企业的注册数量也与日俱增,达到前所未有的规模。毋庸置疑,任何企业都希望自己迅速做强做大,并成为真正现代物流企业的典型代表,要实现这一目标一个首要问题就是要解决现代物流企业的发展观问题。  相似文献   

19.
丛广英  乔炜君 《价值工程》2010,29(6):245-245
大体积混凝土的裂缝问题是实际工程中长期困扰工程技术人员的问题,其控制技术的研究是混凝土结构研究的热点问题,具有重大的学术价值和潜伏的工程背景。  相似文献   

20.
This paper focuses on the fashion industry, one characterised by issues such as dramatic shifts in the scale and power of major retail buyers in the market, the advent of retailer own brands, and the nature of sourcing and supply chain decisions, issues that are increasingly global in nature. The aim of this research is to explore the nature of relationships between UK high street multiple fashion retailers and their contracted suppliers, many of whom are entrepreneurial firms by most definitions of the term. Four core themes emerge from the literature and provide a framework for the research, namely, power, process, partnership, and people. The research approach was qualitative, and conducted over a period of twelve months. The paper ends with an agenda for future research.  相似文献   

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