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介绍了南海石化汽电联产项目的主要设计流程、设计安全审查流程、设计可交付件和先进的设计平台。对该项目的EPC总承包设计管理模式进行了探索,将EPC承包商、聘请的资深工程师、设计分包商等各方面的技术人员组成了设计联合体,保证了设计质量和进度。 相似文献
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为提高电力系统应用软件的实用性,提出了交互设计的思想。阐明了交互设计应包括的概念设计、行为设计和界面设计的概念,介绍了交互设计应经历的角色设计、目标设计、任务设计和人性化设计等几个过程,并指出了设计过程中应注意的问题。实践表明:正确运用交互设计方法能有效提高整定软件的实用性,减少软件开发时间和成本,保证软件开发效率和成功率。 相似文献
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为提高电力系统应用软件的实用性,提出了交互设计的思想.阐明了交互设计应包括的概念设计、行为设计和界面设计的概念,介绍了交互设计应经历的角色设计、目标设计、任务设计和人性化设计等几个过程,并指出了设计过程中应注意的问题.实践表明:正确运用交互设计方法能有效提高整定软件的实用性,减少软件开发时间和成本,保证软件开发效率和成功率. 相似文献
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发电企业DCS系统人机界面设计原则研究 总被引:3,自引:0,他引:3
人机界面的设计随着计算机软件的发展而日趋复杂,设计原则也发生了根本性的变化。阐述了一般计算机人机界面的设计原则,在此基础上提出了电厂DCS系统人机界面的设计原则,并举例说明了设计原则在具体设计实践中的应用。 相似文献
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根据模块化设计的概念介绍了滚筒洗衣机模块化设计的重要性,从模块划分、模块接口的设计、模块化策略三个方面对模块化设计的要点进行了分析,模块化设计有效地降低了成本,提高了设计和制造效率。 相似文献
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现代机电产品造型设计与CAID 总被引:1,自引:0,他引:1
介绍了在现代机电产品造型设计中应注意的几个问题 ,如机电产品造型设计的时代性 ,机电产品造型设计的设计原则等 ,分析了产品造型设计的传统设计方法和CAID设计方法。 相似文献
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S. Y. Wu B. N. Tran F. Y. Davis C. L. Trent D. L. Edberg W. A. Geideman 《Integrated ferroelectrics》2013,141(3):281-291
Abstract Smart materials of lead-zirconate-titanate (PZT) piezoelectric ceramics have attracted attention in recent years for active vibration control, acoustic noise suppression, health monitoring and damage assessment. We at McDonnell Douglas Aerospace have been studying these ceramics for use as sensors and actuators in various space and aircraft structures. In this paper, we will report results of a recent study on active vibration control using monomorph PZT actuators. The experiments were performed on thin aluminum cantilever beams. Collocated and non-collocated sensors and actuators were employed. Two control techniques: the classical velocity feedback and adaptive feedback controls, were investigated. We have obtained significant damping and broadband vibration attenuation of greater than 30 dB using the classical control with the single-input single-output feedback approach. A 24 dB reduction has also been achieved using the adaptive control with the multiple-input single-output approach. Detailed experimental methods and results will be described. 相似文献
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特高压线路工频参数测试干扰分析是选择适合工频参数测试方法及测试结果分析的重要基础。测试了1 000 kV皖南-浙北特高压线路正序和零序参数测试期间的干扰电压信号,分析了其频谱特征;在此基础上,通过与正序参数仿真计算值的对比分析了正序参数实际测试偏差。结果表明:皖南-浙北特高压同塔双回线路工频参数测试期间,干扰电压存在“三相不平衡性及时变性”的特点;工频法和异频法2种不同方法得到的线路参数测试结果存在一定差异;干扰电压“时变”时,线路工频参数测试宜采用异频法。 相似文献
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Abstract This paper has described a new concept on programmable switch device furnished with gain cell combined to FeRAM. Compared with memories but ferroelectric memories under many aspects, they have even been favorably labeled the ideal memory because of their non-volatility, ease of programming and operation by low voltage. As the programming switch, which is very attractive for logic application, SRAM, anti-fuse, flash type devices are well known. They have been required that satisfy non-volatility and low-voltage programming simultaneously. Some structures with ferroelectric material have been proposed and studied as solution of these problems. However, it seemed hard that these type devices are realized now from a viewpoint of fabrication process and low voltage operation. Therefore, we propose a new switch device furnished with gain cell combined to FeRAM. We have studied and simulated this switch device by SPICE. This basic circuit is composed of two blocks. One is switching block that includes gain cell, and the other is memory block that is FeRAM. Circuits, which we designed, amplify bit line's voltage up to Vdd or ground at sense amplification according to FeRAM data. The bit line voltage determines the logic state for gate electrode of switch transistor. The way to read is destructive read out. However, we can transfer information of bit line voltage during plate line is low-level voltage. The way to write FeRAM is similar to conventional way. It is revealed that the basic circuit with FeRAM connected gain cell could work correctly in simulation. In addition, this kind of device is hopeful of many logic applications. 相似文献
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Judith Schwartz 《The Electricity Journal》2018,31(9):34-37
Rate design serves objectives of cost recovery, market animation, and customer incentives. Yet in the quest to find the ‘perfect equitable rate,’ many rate designers and pilots overlook the diversity of consumer attitudes. AMI enables not only interval monitoring and controls, it allows alternative pricing plans, payment options, device adoption, and generation mixes reflecting individual priorities. Connecting consumer attitudes with a portfolio approach helps regulators and utilities achieve specific goals while improving satisfaction and engagement. 相似文献
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加密技术是用于构建安全W eb应用程序的重要技术。阐述了加密技术的概念、几种主要的加密技术方法和应用范围,重点解析了国家电网公司电子公文安全传输系统采用硬软件加密技术相结合的方法,基于全程加密机制,实现公文从制作、传输到管理的全过程的安全保护,以及该系统应用情况。 相似文献
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1000 kV GIS变电所VFTO特性研究 总被引:28,自引:10,他引:18
为确保特高压输电工程的安全可靠,结合我国特高压输电试验示范工程计算分析了GIS和HGIS变电所的特快速瞬态过电压(VFTO)。研究表明,GIS变电所隔离开关开合短线时可能产生高达3p.u.左右的VFTO,对GIS本体绝缘和二次设备可能构成危害。研究了GIS隔离开关装并联分合闸电阻对限制VFTO的作用后,建议GIS变电所采用并联分合闸电阻(约500Ω),提出了并联分合闸电阻的相关参数的建议值;GIS变电所中的主变压器和GIS是经架空线相连接,在变压器上的VFTO不高;HGIS变电所中的VFTO不高,在允许范围内,其隔离开关可不装并联分合闸电阻。 相似文献