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In accordance with the technological difficulties encountered in the process of insulation supervision based on the Dissolved Gases Analysis,several kinds of model and method are presented to improve the reliability and precision of fault diagnosis of the power transformer. Main research content includes:By deeply studying the common transformer faults diagnosing methods,such as three-ratio methods and improved electrical committee agreements,several shortcomings such as uncertainness judgment when the fault reasons,phenomenon and principles come out together while can not consistent to each other etc. For this reason,the old methods can not fully meet the need to engineering practical application.Considering fuzzy relationship matrix can fully represents the causality between fault symptoms and fault types,when diagnosing complex equipments with multiple symptoms and fault causes such as power transformer,a synthetic fuzzy diagnosing model is firstly proposed to diagnose transformers insulation faults based on DGA in this paper. Meanwhile,by further study the character of fuzzy factors,aimed at correcting the defects in classifying fuzzy sets of common fuzzy judgment,a method are put forward by unifying fuzzy synthetic diagnosis and fuzzy principle reasoning.

本文针对应用油中溶解气体分析方法进行变压器绝缘监督时所遇到的主要技术难点，提出了提高变压器故障诊断的准确性、可靠性的几种模诊断方法，主要研究内容有：通过对判断变压器故障常用的三比值法和改良电协研法的深入分析，其诊断准确率较高，但对故障原因、故障现象和故障机理间同时存在不确定性和模糊性的变压器等电气设备的故障诊断，难于满足工程应用的需要；在处理变压器等结构复杂设备的多症状、多原因故障诊断时，模糊关系矩阵可以全面反映这种症状与故障类型间的因果关系，进而提出了变压器故障诊断的模糊综合诊断模型；同时作者还深入分析了模糊算子的特性；针对常用的模糊评判结果的模糊集的集化方法的不足性，提出了将模糊综合诊断与模糊规则推理结合起来进行故障诊断的方法，能达到较好的效果。

On the other hand, with the purpose of fuzzy feature extraction and fuzzy classification device design, the undulatory property of maximum and minimum scattering power corresponding respectively to the maximum and minimum eigen-polarization has been investigated in frequency domain. Furthermore, the anisotropy polarization degree of target, which is determined by both maximum and minimum scattering power of target, has been studied; meanwhile, the dynamic changing characteristic of eigen-polarization on Poincare polarization sphere has been investigated by means of the conception of polarization frequency stability, the research result shows that PSD value has a big jump near π, forming a sharp pulse, and different target has their individual distribution property of PSD pulse.

另外，围绕目标模糊特征提取及模糊分类器的设计，研究了目标最大、最小本征极化所对应的目标最大、最小散射能量随观测频率的起伏特性，考察了由目标最大、最小散射能量共同决定的目标的各向异性极化程度；同时，采用极化频率稳定度的概念，研究了本征极化在Poincare极化球面上的动态变化特性，在最大、最小散射能量相等的频率点上，PSD曲线呈现为幅度接近π值的尖锐脉冲，反映了目标极化散射结构对这一频率跳变极为敏感，但不同目标的这种PSD曲线特征又有很大的不同。

In order to upgrade the safety level as well as the competitiveness of the nuclear power stations ether in operation, under construction or in planning, CGNPC insists on the following technical measures: choosing advanced and proven technique in design phase, adopting as much as achievable the safety standards listed in URD; overall control the technology, safety, quality, project duration and the investment during the period of construction, especially the quality control; creating the safety culture environment; enhancing the capability of technical treatment, adopting and creating new management tools to realize continuous improvement on plant performance when power station in operation.

为了提高已投运、在建和拟建核电站的安全性和经济竞争力，中国广东核电集团有限公司始终坚持在设计阶段选用成熟而先进的技术，努力向未来用户需求的安全标准靠拢，在建设阶段努力抓好技术、安全、质量、工期、投资五大控制，特别是质量控制，在生产阶段则努力营造安全文化氛围，不断提升技术处理能力，引进和创造新的管理方法，持续地向优秀电厂业绩攀登。

Study on impact of wind power integration on power system.

风电接入对电力系统的影响。

It is introduced that harmonic current in the electric network and harmonic current detecting method based on instantaneous reactive power theory in the paper,and then it presents the current detecting method in the anisomerous mains voltage,aberrance circuit based on instantaneous reactive power theory .

通过对电网谐波和瞬时无功功率理论在谐波检测中应用的分析研究，作者给出了基于瞬时无功功率理论的检测方法在电网电压不对称、存在畸变时的电流检测方法。

Statistics based on the multiplicity of vital power elements and on the electrophilic strength of aquo ions of vital power elements respectively.

本文提出了用量子统计力学参数(R_1，R_2)界定中药阴阳性的两种方法：根据生命动力元素重度进行统计和根据生命动力元素含水离子亲电强度进行统计。

This paper introduces the situation of dynamic simulation of power system, design of power distribution system dynamic simulation based on COM and a multilayer digital control network method based on PLC, which uses digital technology nested of the tradition analog cyanic control method.

介绍了基于COM分布式电力系统动态模拟技术和基于PLC多层数字控制网络电力系统动态模拟控制技术的基本结构和技术要点。

In the incontinuous cutting, the wave shape of milling can be looked as periodic function. When the milling wave shape with single-tooth was looked as impulse function, by the Fourier Transform, we can find out that it is composed of sine wave with a given frequency and a series of integer multiple frequency. Discussing on the power function is a major tache for studying on the cutting capability of the complex three-dimension groove milling inserts, so to know the facts that affect the single-tooth milling spectral value, and to observe the dynamic milling wave property from the composition of the power spectral, thus we can design and optimize grooves.

在断续切削中，铣削波形可被看作周期函数，将单齿铣削波形看成为脉冲函数，经过傅立叶变换，可以表示为一个按特定的基本频率变动的正弦波形的分量和许多个按基本频率的整数倍而变动的正弦波形的分量叠加而成，讨论所获得的频谱函数，是研究三维复杂槽型铣刀片切削性能的主要环节，以便了解影响单齿铣削波形幅值谱图的各种因素，并从功率谱图的组成情况来考察动态铣削波形的特性，从而进行槽型的设计和优选。

With each power parameter being made sure . it provides necessary reference and guarantee for the power matching on the tractor and on the lengthways control system.

各动力参数的最终确定，为牵引车的动力选配及纵向控制系统的控制力匹配提供了必要的参考和保证。

The foundation of the power market depends on that the power generati on enterprises in competition establish their own positions in the market and de monstrate its dominance to others by action differentiation .

电力市场的建立需要参与竞争的发电企业确立自己在市场中的位置，通过其行为的差别化显示与其他竞争者的优势。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。