200MW循环流化床机组协调控制策略的研究与应用

针对200 MW循环流化床机组的特点,在机组现有DCS基础上,合理设计、优化了机组的协调控制系统,提出了适合中小容量循环流化床机组的协调控制策略,给出了主蒸汽压力和床温等被控对象特性参数的取值。通过在多台机组上的应用,解决了此类机组协调控制系统中控制对象存在的非线性、大滞后和强耦合等技术难题,取得了良好的调节品质和运行效果。     

内蒙古电力科技查新网络服务平台建设方案探讨

从内蒙古电力科技信息中心电力科技查新工作的需求出发,对内蒙古电力科技查新网络服务平台建设提出设想和建议。该平台建设应包括科技查新门户网站及电力科技查新服务管理系统的建设。科技查新门户网站建设应与内蒙古电力(集团)有限责任公司的企业文化相融合,以委托用户为服务主体,以易用性为准则;网站内容应包括宣传服务信息和功能性服务项目。电力科技查新服务管理系统建设时需围绕体系工作流的全过程进行设计,符合相关法律法规要求;其系统功能设计应包括门户维护、用户服务、辅助查新等内容。     

Modeling surface water-groundwater interaction in arid and semi-arid regions with intensive agriculture

In semi-arid and arid areas with intensive agriculture, surface water-groundwater (SW-GW) interaction and agricultural water use are two critical and closely interrelated hydrological processes. However, the impact of agricultural water use on the hydrologic cycle has been rarely explored by integrated SW-GW modeling, especially in large basins. This study coupled the Storm Water Management Model (SWMM), which is able to simulate highly engineered flow systems, with the Coupled Ground-Water and Surface-Water Flow Model (GSFLOW). The new model was applied to study the hydrologic cycle of the Zhangye Basin, northwest China, a typical arid to semi-arid area with significant irrigation. After the successful calibration, the model produced a holistic view of the hydrological cycle impact by the agricultural water use, and generated insights into the spatial and temporal patterns of the SW-GW interaction in the study area. Different water resources management scenarios were also evaluated via the modeling. The results showed that if the irrigation demand continuous to increase, the current management strategy would lead to acceleration of the groundwater depletion, and therefore introduce ecological problems to this basin. Overall, this study demonstrated the applicability of the new model and its value to the water resources management in arid and semi-arid areas.     

A novel study of sulfur-absorption via samarium-doped cerium sorbent at high temperature

Sulfides existing in many gas mixtures of high temperature cases have a negative effect on various industrial applications.In this study,we present samarium-doped cerium(SDC) sorbent to remove H2 S at high temperature.Compared with pure CeO_2,the SDC sorbent shows excellent ability in sulfur removal because of the positive effect of the doping of Sm.The H_2 has a negative influence on sulfidation of the SDC sorbent and significantly shortens the breakthrough time,hence breakthrough sulfur capacity(BSC).The carbon monoxide present in the feed gas has no obvious effect on the sulfur-removal performance,A suitable samarium loading in SDC leads to an optimum interaction between metal oxide species and the surface oxygen vacancies,which results in an optimal adsorbed activity of reduced gas(H_2,H_2 S) and hence desulphurization performance.In addition,the SDC sorbents have a good regenerated ability by a simple calcination process.     

林火视频烟雾检测算法综述

火灾早期时,烟雾相较于火焰特征更为明显,因此早期的烟雾检测对于预防火灾具有重大意义。针对森林、草原火灾早期的烟雾检测,烟雾探测器成本高、检测效果较差且不能提供烟雾大小、方向、位置等信息。随着计算机视觉的发展,基于视频的烟雾检测方法以低成本、覆盖面广、信息获取较全面等优势逐渐成为研究热点。但由于森林、草原背景复杂、烟雾本身易变化,因此视频烟雾检测算法仍面临着巨大的挑战。为研究深度学习的视频烟雾检测中的应用效果,分析了烟雾检测存在的难点问题及传统视频烟雾检测算法的不足,介绍了当前深度学习中各类目标检测算法在烟雾检测中的应用,对比了这些烟雾检测算法,总结了其优点和不足,重点分析了各种烟雾检测难点问题的解决方法,并提出烟雾检测的下一步研究方向。     

基于GMS的巴彦淖尔市临河区地下水流场预报

在查明内蒙古巴彦淖尔市临河区水文地质条件、地下水开发及引发的环境地质问题的基础上,用均衡法及数值模拟法进行地下水资源量计算。根据当地水资源开发利用方案,利用模型进行研究区2013年-2033年地下水流场演化模拟,结果表明该方案下研究区地下水降落漏斗不再继续扩大,地下水位有所回升,对该区水资源管理有指导意义。     

黄河流域气象干旱与水文干旱时空特征及其传递关系EI北大核心CSCD

基于标准化降水蒸散指数(SPEI)和标准化径流指数(SRI),比较了黄河流域气象干旱和水文干旱的时空分布差异,分析了二者时间尺度上的关联性,并选取典型干旱事件进一步探讨了两种干旱类型的传递关系。结果表明:两种干旱类型空间上有相似的趋势和频次,但在黄河源区和黄河中南部(渭河流域)差异显著,其干旱历时均有随年代延长的趋势,水文干旱历时增长尤为明显;在时间尺度上,SPEI与SRI在大部分区域基本一致,但在黄河源区和渭河流域差异较大,尤其是短时间尺度上差异更显著;气象干旱与水文干旱并非一一对应,多场短历时间断气象干旱受时滞效应、异常气象波动等影响,可能引发一场长历时连续水文干旱或多场短历时间断水文干旱,一场长历时连续气象干旱强度衰减可能引发多场短历时间断水文干旱。     

激发极化法在寻找内蒙某隐伏金属矿的应用研究

介绍了内蒙古某金属矿勘探区地质构造,以及激发极化法在该地区的应用.通过对构造带的矿(化)体的激电异常特征的分析,认为该矿区高极化中低阻和高阻中极化的激电异常是一个有效的找矿标志.区内矿(化)体的激电异常较明显,推断此矿床具有良好的成矿前景.     

The microstructure,ferroelectric and dielectric behaviors of Na0.5Bi0.5(Ti,Fe)O3 thin films synthesized by chemical solution deposition: Effect of precursor solution concentration

Fe-doped Na_0.5Bi_0.5TiO₃ (NBTFe) thin films were prepared directly on indium tin oxide/glass substrates using a chemical solution deposition method combined with sequential layer annealing. The X-ray diffraction, scanning electron microscopy and insulating/ferroelectric/dielectric measurements were utilized to characterize the NBTFe thin films. All the NBTFe thin films prepared by four precursor solutions with various concentrations of 0.05, 0.10, 0.20 and 0.30 M exhibit polycrystalline perovskite structures with different relative intensities of (l00) peaks. A large remanent polarization (P_r) of 33.90 μC/cm² can be obtained in NBTFe film derived with 0.10 M spin-on solution due to its lower leakage current and larger grain size compared to those of other samples. Also, it shows a relatively symmetric coercive field and large dielectric tunability of 36.34%. Meanwhile, the NBTFe thin film with 0.20 M has a high energy-storage density of 30.15 J/cm³ and efficiency of 61.05%. These results indicate that the electrical performance can be controlled by optimizing the solution molarity.     

220kV风电场主变压器氢气含量超标缺陷的诊断和处理

本文中作者介绍了某风电场220k V主变压器氢气含量超标的情况,依据油中溶解气体历史检测和电气诊断试验结果,分析了缺陷成因,提出了处理方案和技术建议。