电力系统继电保护整定计算软件探析

介绍电力系统继电保护整定计算软件的相关问题,着重探讨了对该软件的改进措施.     

供配电系统无功补偿方案的选择

介绍无功补偿的作用、方法及原则,分析炼钢供配电系统负荷性质及无功补偿的必要性,并提出各供配电系统的无功补偿方案。     

雷电侵害核电站DCS的原因及改进措施

以IEC61312规范为指导,对岭澳#3/4机组烟囱流量信号DCS侧保险在雷暴天气期间被烧毁,同时机组出现异常报警信息的事件进行分析,明确雷电侵害DCS的途径及影响,并提出改进措施.     

Adaptive neural network control for a class of continuous stirred tank reactor systems

In this paper, the control problem of continuous stirred tank reactors （CSTR） is studied. The considered CSTR are required to contain unknown functions and unknown dead zone input. An adaptive controller that uses the neural networks （NNs） is provided to solve the unknown terms. The proposed approach overcomes the effect of the dead zone input. The dead zone input in the systems is compensated for by introducing a new Lyapunov form and Young＇s inequality. The backstepping procedure is exploited to implement controller design with adaptation laws. The stability is analyzed using Lyapunov method. The performance is examined for CSTR to confirm the effectiveness of the proposed approach based on computer simulation.     

湛江电网故障统计分布及台风演化分析

研究湛江电网故障统计分布规律,发现湛江电网故障具有明显的幂律特性,去除故障极值日的数据呈指数分布.而故障极值日均伴有极端天气,表明湛江电网故障的幂律特性因极端天气引发.     

Joint optimal sensing time and power allocation for multi-channel cognitive radio networks considering sensing-channel selection

In this paper,we consider a multi-channel cognitive radio network(CRN)where each secondary user(SU)can only choose to sense a subset of channels.We formulate a joint optimization problem of sensingchannel selection,sensing time and power allocation under the constraints of average transmit power budget and average interference power budget,which maximizes the CRN’s total throughput.We propose a greedy algorithm to solve the joint optimization problem,which has much less computational complexity.Moreover,it is shown that the search space of the greedy algorithm can be further pruned.Finally,numerical results demonstrate that the greedy algorithm has comparable performance to the exhaustive search algorithm.     

V型滤池电气自控系统应用分析

从控制网络的选择、机泵阀门设备的控制、供电系统设计及电气线缆布置等方面,介绍滤池电气控制系统的优化,以更好地实现滤池自动化控制.     

交流电量采集技术在LF炉的应用

介绍交流电量采集系统的设计,及其在LF精炼炉中的应用.     

10kV配网自动化系统建设与规划

介绍10kV配网自动化系统建设与规划的主要内容,并提出注意事项。     

高频脉冲电流法在在线检测电力变压器局部放电中的应用

介绍高频脉冲电流检测技术的原理,及其在在线检测电力变压器的局部放电中的应用。