气体裂变产物88Kr半衰期测量

为准确测定气体裂变产物⁸⁸Kr的半衰期，本工作从辐照铀靶中分离得到3个放化纯的⁸⁸Kr气体测量源。以⁸⁵Kr作内标监督源，¹³⁷Cs或⁵⁷Co作外标监督源，使用多个HPGe探测器分别采用单探测器位置接力法和双探测器位置接力法跟踪测量⁸⁸Kr 196.3 keV能量的特征γ射线，跟踪时间均在8个半衰期以上，以获得其半衰期数据。对3次独立测量数据用多种方法进行处理，最终得到⁸⁸Kr半衰期测定结果为（2.796±0.015） h。     

A novel fast distance relay for series compensated transmission lines

This paper presents a fast distance relay for series compensated transmission lines based on the R–L differential-equation algorithm using the theory of equal transfer process of transmission lines. The measuring distances based on the proposed algorithm can fast approach the actual value of fault distance when a fault occurs in front of the series capacitor. When a fault occurs behind of the series capacitor, the fault loop, including the series capacitor, does not match the R–L transmission line model, so the measuring distances fluctuate severely. Based on this, the relative position of the fault with respect to the series capacitor can be judged effectively according to the fluctuation range of the measuring distances, and the accurate fault location can be obtained fast. A variety of PSCAD/EMTDC simulation tests show that the new relay has fast operating speed and high accuracy when applied to the long series compensated transmission lines.     

Protection of power transformer using multi criteria decision-making

Power transformers are protected by different relays that operate independently. Malfunction of each relay has a major role in reducing the reliability of the protection system. In order to mitigate the main drawbacks of the power transformer relays, an overall protection scheme is presented in this paper. This scheme proposes a novel multi criterion algorithm using decision-making based on fuzzy logic. In this paper the outputs of restricted earth fault relay and a directional check unit, are combined with the output of the differential protection relay. Therefore, problems that are pertaining to independent operation of each relay have been mitigated and the relays cover protection blind spots of each other. The improved power transformer protection (IPTP) scheme enhances the sensitivity and reliability of the power transformer protection. Extensive simulations are used to measure the effectiveness and merit of the proposed IPTP relay. The above efforts result in a multi criteria approach for protection of power transformers.     

烧结成品运输自动控制系统的改进

对烧结成品运输自控系统不稳定性因素进行了分析，提出了采取优化硬件外围工作环境，完善软件保护程序等改进措施。改进后的自控系统稳定性明显提高。     

帧中继交换技术

本文论述了帧中继交换的概念、标准，结构、特点网络式样及在互连网中的应用。     

美国高能激光技术2005年主要进展

高能激光武器技术在2005年取得了重大进展。介绍了机载兆瓦级化学氧碘激光器的关键试验和束控-火控系统的飞行试验。评论和讨论了高功率固体激光器、光纤激光器、超高效率二极管源和中继镜技术的重大进展。     

Effect of reliability of grounding of the shaft of a turboset on the operation of devices for control and protection of exciting circuits

Disturbance of the grounding of the shaft of a turboset or its absence for technical reasons can result in failure, misoperation, limitation of the operating zone, errors or limitation of the sensitivity of devices for control and protection of exciting circuits from single-point leakage, and electroerosion of elements of the turboset structure. Measures for increasing the reliability of the grounding of the shaft are discussed. __________ Translated from élektricheskie Stantsii, No. 3, March 2006, pp. 61–66.     

隔河岩水电厂220 kV线路保护配置及运行分析

介绍了隔河岩电厂220kV线路保护的原理设计及运行情况，以及采用了双重微机化继电保护装置后带来的优越性，简要描述了CSL-101A高频保护和RCS-931A光纤保护的应用特点。     

基于集群计算机的保护定值在线校核

采用分布式计算技术，研究并实现了基于集群计算机的保护定值在线校核并行计算方法。首先分析了保护定值校核计算的计算量和计算特点，接着对可能采用的并行计算方法进行比较，最后选择了基于电网分块的并行计算方法。采用协调机加计算子机的计算模式，在协调机上执行分块算法，通过基于主导节点的图划分方法把电网分成几块，每台计算子机只校核1块电网内的保护定值，最后由协调机收集汇总计算结果。现场应用证明，该并行计算方法正确、有效。     

油田热电厂网控SF6断路器改造二次回路存在的问题及解决方法

针对油田热电厂110 kV、220 kV电气系统以及主变少油断路器改造为SF6断路器过程中,二次设备及回路存在的问题和可能发生的事故隐患进行了详细的论述,旨在各方面条件允许的情况下,对上述设备加以改进,以防止事故的发生.