共查询到20条相似文献,搜索用时 31 毫秒
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Oono H. Kawaharasaki M. Kawai M. Morishita T. Nishi A. Katsuyama M. 《Power Systems, IEEE Transactions on》1992,7(2):558-564
The Chubu Electric Power Company (CEPCO) has developed the distribution automation system (DAS) by using minicomputers which monitor and control large and complex distribution networks with maximum reliability and promptness. A significant curtailment of the restoration operation time due to the occurrence of faults is expected by the introduction of the DAS. The authors introduce the DAS that was installed at CEPCO's Kita Utility Office in December 1989 and report on its operation performance. The objectives of the DAS are to enhance the reliability of the power supply, to improve the service quality for customers, and to improve the efficiency in facility utilization. The DAS connects the utility office online with the supervisory control and data acquisition (SCADA) system at the control center and the total distribution management system at the head office, and it has unique functions that will contribute to integrated distribution automation 相似文献
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论述了配电网自动化系统的功能和实施配电网自动化的困难,并对有代表性的上海金藤工业园配电网自动化系统、银川城区配电网自动化系统进行了介绍,最后提出了配电网自动化实施的步骤及其应优先考虑的功能。 相似文献
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基于IP技术的配电自动化通信系统 总被引:5,自引:0,他引:5
分析了配电自动化(DA)对通信系统的要求。针对配电自动化系统(DAS)的特点,提出了能透明地支持所有DA功能的综合开放的通信系统——基于IP技术的通信系统。该通信系统应独立于任何DA功能,它给处于该DAS中的每一个需要通信的接入点分配一个惟一的地址,在每个接入点上将其需要传输的数据打成标准的“数据报”形式。该通信系统遵循ISO的分层方法,能兼容任何第1,2层协议,并采用了保证QoS和实时性的协议。 相似文献
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Tae-Il Choi Lee K.Y. Dong Ryul Lee Jeong Kil Ahn 《Power Delivery, IEEE Transactions on》2008,23(2):650-656
A communication system plays an important role in distribution automation system (DAS), and various communication media have been applied to meet the utility's objective. Distribution automation technology using code division multiple access (CDMA) wireless communication network have been developed and shown its cost effectiveness and durability through the field test. Several system components for CDMA such as gateway, packet assembly disassembly and modem had been newly developed and their interfaces are standardized. Establishing a separate control channel for interworking function from central station, system reliability is significantly improved in the case of event processing. CDMA network would be applied to a small-scale DAS which could have a difficulty in constructing a communication network in an economic way, while fiber-optic cable would be applied to a large-scale DAS which needs high speed and reliability in a big city. 相似文献
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分析 10kV馈线保护的二次重合闸与柱上真空开关 (PVS)的配合 ,实现 10kV架空线配电自动化系统的初级阶段———电压型馈线自动化 ,即当发生故障时 ,及时准确地确定故障点 ,方便维修人员处理 ,自动隔离故障点 ,恢复非故障区间供电 ,减小客户停电时间和停电范围。同时介绍了广州电力局电压型馈线自动化的应用实例。 相似文献
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县级城区配电网自动化设计方案的实施 总被引:1,自引:0,他引:1
讨论县级城区配电网自动化系统(DAS)的整体结构及各个层次的设计思路,并以江苏江阴城区DAS为例,力求系统具有合理性、可靠性,以适应DAS建设分期投入、分步实施的要求。在系统主干线通道上采用光纤通信方式,对于分支通信采用屏蔽双绞线以RS-485方式通信,并对网络体系结构作了详细的描述。 相似文献
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配电自动化数据传输有误对配电系统供电可靠性的影响 总被引:1,自引:0,他引:1
配电自动化系统可视为一类典型的信息物理系统,其信息环节(包括主站、通信网络以及配电终端单元)是物理配电系统安全可靠供电的重要保证。考虑信息环节数据传输有误影响,旨在提出一种评估配电自动化数据传输有误对配电系统供电可靠性影响的分析方法。首先,以馈线分段联络模型为基础,构建基于供电可靠性指标以及包含故障定位、故障隔离和故障处理恢复环节细分的馈线故障模式后果分析解析模型;随后,引入信息环节数据传输有误影响,提出相应的可靠性指标修正模型,以系统停电时间和系统缺供电量为指标,评估配电自动化传输信息有误对配电系统可靠的影响。最后通过算例验证了所提模型和算法的有效性。 相似文献
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Lim S.-I. Lee S.-J. Choi M.-S. Lim D.-J. Ha B.-N. 《Power Systems, IEEE Transactions on》2006,21(4):1638-1644
Current KEPCO's distribution automation system (DAS) provides a very effective restoration solution for the single fault case but cannot handle multiple faults. This paper proposes a two-step restoration scheme-sequential and simultaneous restoration-for multiple fault cases. Efficiency has been achieved by introduction of restoration performance index (RPI) and load-balancing algorithm. Test results to show effectiveness of the proposed scheme are presented, and field experience of DAS in Korea is described as well 相似文献
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电力综合信息管理系统面向对象数据库的建模 总被引:5,自引:0,他引:5
分析了电力综合自动化信息管理系统(PIAIMS)的体系结构及各功能子系统的数据流程和基本实现框架,指出构建电力系统运行监控、能量管理和运行管理等统一的数据平台的必要性;基于实际研发项目全面论述了电力综合自动化系统中面向对象数据库(OODB)统一建模的主要内容及基本方法,为电力实时监控系统(SCADA)、能量管理系统(EMS)、调度自动化系统(DAS)、电网AM/FM/GIS、调度员培训系统(DTS)以及用于管理和规划的管理信息系统(MIS)等实现数据共享提供基础性的统一的数据结构支持。 相似文献
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Optimal placement of line switches for distribution automation systems using immune algorithm 总被引:1,自引:0,他引:1
Chao-Shun Chen Chia-Hung Lin Hui-Jen Chuang Chung-Sheng Li Ming-Yang Huang Chia-Wen Huang 《Power Systems, IEEE Transactions on》2006,21(3):1209-1217
To enhance the cost effectiveness of the distribution automation system (DAS), this paper proposes the immune algorithm (IA) to derive the optimal placement of switching devices by minimizing the total cost of customer service outage and investment cost of line switches. The reliability index of each service zone defined by the boundary switches is derived to solve the expected energy not served due to fault contingency, and the customer interruption cost is then determined according to the customer type and power consumption within the service zone. To demonstrate the effectiveness of proposed IA methodology to solve the optimal placement of line switches, a practical distribution system of Taiwan Power Company (Taipower) is selected for computer simulation to explore the cost benefit of line switch placement for DAS. 相似文献
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通信是配电系统实现综合自动化必不可少的组成部分,是配网调度中心实现对远方终端的数据传输、采集和进行遥控操作的必要手段。文中论述了配电自动化通信系统的功能,并结合德州配电自动化工程的实际情况,提出了配电自动化通信系统的设计要求、层次结构、通信方式及其具体实现方法。 相似文献
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