共查询到20条相似文献,搜索用时 187 毫秒
1.
为了满足多种电力业务终端数据传输需求,建设双向、安全、可靠、灵活的通信接入网络是最关键环节之一。文章分析了典型电力业务终端的通信质量需求,探讨多种有线/无线通信技术在电力终端业务中应用的可行性。为了建立通信技术与电力终端业务的耦合量化关系,设计了一种多属性综合通信技术指标与电力终端业务需求的数值匹配算法,解决电力通信接入网的选型问题。以配电自动化业务(二遥)为例验证了该算法能合理地建立配电自动化业务的通信网络,并给出了其他典型电力业务终端的通信技术选型建议,为智能电力终端通信网建设提供理论指导。 相似文献
2.
作为通信速率高达1Mbps的多主总线式串行数据通信方式,CAN总线为发动机电控系统的在线标定、实时监测提供了快速可靠的通信保障,同时可方便地与其它车载控制器构成CAN总线通信网络。本文介绍了CAN总线通信接口的基本结构和通信协议,以MC68376在片CAN控制器为例介绍了发动机电控系统采用SAE J1939通信协议实现CAN总线通信的设计要点。 相似文献
3.
4.
5.
6.
为解决配电网智能分布式馈线自动化系统现有光纤通信方案存在建设成本高、运维困难及可拓展性差等难题,文章利用5G LAN全互联二层通信高可靠低时延网络技术,提出基于5G LAN技术的配电网智能分布式馈线自动化系统快速对等通信和组网实用化方案。文章围绕5G LAN适配应用、网络拓扑、业务通信指标等几个关键方面进行分析,开展实网试验验证,验证结果表明5G LAN通信技术满足智能分布式馈线自动化系统应用要求,可以快速、精确地切除故障,实现故障自愈,对提高配电自动化系统的智能化数字化运行水平和供电的可靠性有较高的实践应用价值。 相似文献
7.
8.
在介绍自动电压控制(AVC)系统设计背景的基础上,叙述了AVC系统的结构与配置、算法与流程、关键技术与应用优势,凸显了数据采集与监控、实时控制与快速补偿、人机联系与优化调节、历史数据管理等多项新技术的整合应用。试运行表明,供电系统AVC采用一级加二级控制方式运行,保证了AVC系统的先进性和补偿功能的稳定可靠;在地区调度和终端,通过数据采集与监控装置对地调进行全面的无功电压快速调节;利用动态无功补偿器的基于直流侧电容电压控制和系统无功电流反馈控制,可以可靠、灵活地提高无功电压的控制能力。 相似文献
9.
10.
ZigBee是一种基于IEEE802.15.4标准指定的短距离、低功耗的无线通信技术,具有低复杂度、自组织、低功耗、低成本的特点,可以灵活地结合嵌入式技术并广泛应用于自动控制领域。文章针对电能信息采集的数据通信需求,对基于ZigBee通信的电能信息采集系统中采集终端与采集主站之间的电能信息数据传输方法进行了研究,给出了传输规则、应用协议单元协议的制定方法以及基于STM32F407与CC2530的采集终端的软硬件设计。实验证明通信稳定可靠,电能信息数据的传输效率得到了提高。 相似文献
11.
《Numerical Heat Transfer, Part B: Fundamentals》2013,63(5):457-472
This article reports on a multiblock implementation of a general three-dimensional single-block computational fluid dynamics code, which is developed in a nonorthogonal, structured, collocated finite-volume grid system, and incorporates a range of turbulence models. The multiblock implementation is essentially block-unstructured, each block having its own local coordinate system unrelated to those of its neighbors. Any of the blocks may interface with more than one neighbor along any block face. Interblock communication is handled by inner-boundary connection information (receive and send point index arrays) and effected via two-layer dummy cells along interblock boundaries. This communication procedure is easy to extend to parallel computation. The implementation of the algorithm, which takes the advantage of Fortran 90, employs a method to keep most of the single-block code unchanged. Two cases are presented to validate the implementation, and another case with a block number ranging from 1 to 160 blocks is presented for test of the influence of the multiblocking on the convergence rate and execution time. 相似文献
12.
为了将采集到的终端设备信息全方位且及时地传送到运检部门,使电力企业能够及时掌控低压配电台区的运行状况,必须依靠可靠的通信系统。文章采用双模通信技术的方式设计了一种低压配电台区监测系统,当该系统开启不同功能模块时,自动切换到最恰当的通信模式,从而达到各个功能更全方位及时的呈现,达到对台区更精益化管理的效果。 相似文献
13.
介绍发动机电控标定系统的概念和基本功能,分析了发动机电控标定系统开发过程中涉及到的几个关键技术,包括硬件设计、软件设计、通信协议制定、数学模型建立、优化算法以及标定方法的选取。 相似文献
14.
根据内燃机车运用和检修特点研制了内燃机车增压器故障检测系统,该系统能够完成对柴油机和增压器转速、增压器振动、机油压力、涡轮进气温度、增压器空气出口压力6个参数的测量、显示和记录,可实时地对各种异常状态作出诊断并发出指令报警。配套的地面分析软件可对车载数据采集报警装置中的数据进行分析和处理,及时发现问题,保证增压器的可靠运行。 相似文献
15.
《全球能源互联网(英文)》2019,2(4):328-335
Fieldbus, industrial Ethernet that is simple, reliable, economical, and practical, is widely used in Wind Energy Conversion Systems (WECSs). These techniques belong to the field of networked control systems. Network embedding to Wind Energy Conversion Systems brings many new challenges. Implementing a control system over a communication network causes inevitable time delays that may degrade performance and can even cause instability. This work addresses challenges related to the reliable control of wind energy conversion systems, based on the theoretical framework of networked control systems. A type of WECS with network-induced delay and packet dropout is modeled and adjustable deadbands are explored as a solution to reduce network traffic in WECSs. A method to study the reliable control of WECSs is presented, which takes into account system response as well as the network environment. After detailed theoretical analysis, simulation results are provided, which further demonstrate the feasibility of the proposed scheme. 相似文献
16.
文中主要介绍沈北新区财落中心镇水厂自动化控制系统设计的功能,以及自动化控制系统在整个水厂运行管理中发挥的重要作用,并取得了良好的社会效益和经济效益.确保了水厂水处理工艺过程高效、节能、安全、可靠、稳定地运行,降低饮用水处理成本,改善操作环境,出厂水达到国家饮用水水质标准,减轻劳动强度,促进技术进步,充分发挥了现代通信网络技术的优越性.实现了厂区安防监控系统,水厂工艺生产过程控制系统,水厂的信息管理系统. 相似文献
17.
18.
参考IEC103标准及TCP/IP网络协议,结合故障信息系统中主站和子站通信接口的要求,提出主-子站间的通信接口要求和具体方案.研究了主站和子站之间通信报文规范,并针对提高主站系统内部的通信可靠性要求提出有效的机制,该通信机制有利于提高通信的可靠性、通信效率. 相似文献
19.
《全球能源互联网(英文)》2021,4(5):513-519
With a lack of coverage in private and public power communication networks, especially for collection of information from hydropower stations in remote areas, communication coverage is a significant issue. Satellite communication provides a large coverage area suitable for a variety of services and is less affected by geographical factors; moreover, the costs are independent of the communication distance. This study investigates information acquisition technology for small hydropower stations in remote areas using high- and low-orbit satellites. The information collection needs of small hydropower stations in remote areas are analyzed, and an information acquisition system is designed using high- and low-orbit satellites. For network security protection, network anomaly detection technology based on a support vector machine algorithm is proposed. The effectiveness of information collection was evaluated and verified for small hydropower plants in remote areas. The system provides technical support for “full coverage, full collection, and full monitoring” of the measurement automation information acquisition system. 相似文献
20.