电力地

The application that passes the power distribution geographical information system, GIS can be right, overall, various resource information of the in due course acquisition electric power business, and take in to refine, analysis, tender gist of relief the decision - making for the handler and decision maker of the electric power business, guarantee the electric power network safety thus and operate efficiently, and for more the multiuser tender a perfect thoughtful service of a fortiori.

通过配电地理信息系统的应用能够正确、全面、及时地获取电力企业的各种资源信息，并加以提炼、分析，为电力企业的管理者和决策者提供辅助决策的依据，从而保障电力网络安全、高效地运作，以及为更多用户提供更加完善周到的服务。

With this method, the damping characteristic and the steady state stability of power systems can be considerably improved.

该方法紧密地结合了电力系统实际，考虑了电力系统对励磁控制的基本要求，能够同时有效地改善电力系统的阻尼特性和提高电力系统的静态稳定性。

By using this method, the angular frequency, amplitude, initial phase angle, decay constant of each component in transient voltage and/or current waveforms can be precisely extracted. Also, all other kinds of transient procedure can be analyzed by this method. Thirdly, a new definition of generalized instantaneous reactive power and generalized instantaneous reactive current in dq0 coordinates under any nonsinusoidal and unbalanced three-phase circuit is proposed for the first time. The detection and compensation method for different instantaneous reactive currents are also concerned.

本文首先提出了用于快速高精度频谱分析的一种改进快速傅立叶变换方法，该法具有速度快、精度高、抗混迭、不受采样定理约束、可以分析出谐次大于N／2的频谱系数等特点，可方便地应用于电力系统谐波分析及其它各类频谱分析；然后提出了基于非线性最小二乘优化法的电力系统暂态波形分析方法，可准确求出电力系统暂态电压、电流波形中各个分量的角频率、幅值、初相角及衰减常数，并可广泛应用于各类暂态过程波形分析。

Firstly, the background and the significant of the research is discussed, modern software engineering and its development is also outlined, and the present states and the reason of using the modern software engineering in power systems are also analyzed. Secondly, related theories and methods of the modern software engineering are systematically given in details, which establish the basis of the software development with the software engineering in power systems. Thirdly, the necessity of the developed power system software with the software engineering is analyzed deeply and the key techniques in carrying out the software development with the software engineering are discussed. Based on these, a concrete approach about the software development with the software engineering is proposed. And then, the software design process of 'GPS synchronous monitoring system of Hunan power grid'is given to demonstrate the utilization of the approach proposed. Subsequently, quality and efficiency of the software is analyzed, which indicates the validity of the method used. At last, the main work and fruitage of the thesis is concluded, and the further research is also pointed out.

论文首先论述了课题研究的背景和意义，概述了现代软件工程及其发展，分析了现代软件工程在电力系统中的应用现状及其原因；然后系统地阐述了现代软件工程的相关理论和方法，奠定了电力系统软件工程化开发的理论基础；接着分析了电力系统软件工程化开发的必要性，探讨了实施工程化开发涉及到的关键技术，结合现代软件工程的理论和方法，提出了一种电力系统软件工程化开发的具体方法；之后以湖南电力系统状态GPS 同步监测系统软件的开发为例，详细地阐述了该工程化方法在电力系统软件开发中的具体实践过程，并分析了软件开发的结果，指出了该方法是解决软件开发质量和效率问题的有效途径；论文最后对主要工作和成果进行了总结，并指出了有待进一步开展的工作。

The electricity market, as well as security market and future market, are all concentrated bidding merchandize market, so it is necessary to design the effective aggregative index for the electricity market considering the characteristics of power industry.

电力市场与证券市场、期货市场一样，同属于集中竞价的商品市场，根据电力工业的特点和电力市场的根本目标，合理地编制电力市场的综合指数十分必要。

By the management conceptions of the power company have been upgraded, the line-loss rate of the power network of China will be advanced in the world with adopting modern management method, giving up extensive management, making better use of quantitative, operable and examinable scientific management methods, reducing the irrational line-loss to the least as it can be.

随着电力企业经营理念的更新，不断掌握现代化管理手段，摒弃粗放管理，更好地应用定量的、可操作的、可考核的科学管理方法，把不合理电能损耗减小到最少，使线损率达到先进水平，这是电力企业现代化管理的核心内容之一，也是电力企业生存和发展的必要条件。

matlab sps is used to build a simulink model of single-machine infinite-bus system, and based on the simulink model, simulation on effect of pss suppressing small disturbances low frequency oscillation is carried on, and some methods of improving power system transient stability are simulated, including avr and pss, short circuit cleared rapidly, fault current limiter and single-phase auto reclose. the study unifies the simulink model to realize matlab and vb seamless integration using the activex technology, and demonstrated the matlab simulation result with the vb contact surface. this method of matlab and vb integration can make up the matlab contact surface unfriendly flaw and offers a reference for the design for cai of power system analysis course.

运用matlab电力系统仿真模块集sps构建了单机—无穷大系统simulink模型，对电力系统稳定器抑制电力系统小扰动低频振荡的效果进行了仿真；对提高电力系统大扰动功角稳定性的措施，如自动电压调节器及电力系统稳定器、快速切除故障、故障限流器、自动重合闸等手段的使用效果进行了仿真验证；并结合单机—无穷大系统的simulink模型运用activex 技术实现sps与vb的无缝集成，将sps的仿真结果用vb界面显示，较好地弥补了matlab用户界面不友善的缺陷，为《电力系统分析》课程进行cai设计提供了思路。

As the technology of power electronics develops, a lot of non-linear power electronic components are applied widely in the electric power system. The complicacies of electric power system structure also give rise to a series of problem.

随着电力电子技术的发展，大量的非线性电力电子器件广泛地使用于电力系统中，电力系统结构的日益复杂，给系统的运行带来了一系列的问题，其中最为严重的就是功率因数降低和谐波污染问题。

Hence,an integrated management system is created which mingles internal control with management system of electric power enterprises.

笔者认为内部控制是电力企业管理机制的一部分，内部控制要与电力企业管理机制内容有机地融为一体，只有这样，电力企业的内部控制制度和流程才能发挥应有的功能。1电力企业管理体系中的内部控制电力行业是国家的基础产业，在国民经济中发挥着极其重要的作用。

This article analyzes the price formation mechanism from three aspects in the electricity market: the interests balance among the enterprises, the optimal resources allocation, the price flexibility and the external characteristics of the industrial economy. So, we have reached a core conclusion, that is, the integrated value of the electricity is the basis of the price formation. We can negotiate the benefit distribution among enterprises gradually and vertically by introducing the flexibility cost of the power enterprises, the use of the positive and the negative externalities of electric powers, the property rights decomposition of the power resources and the value re-estimation into the mechanism of the price formation.

本文从各企业利益平衡、资源配置的最优化、弹性价格及电力产业经济外部性特征等三个方面分析电力市场价格形成机制，分析得出一个核心的结论，电力资源的综合价值是电力价格形成的理论基础，将发电企业的弹性成本，电力正负外部性，电力资源的产权分解与电力价值再估算不断地引入价格形成机制之中才能逐步地协调电力市场纵向结构间企业之间的利益分配关系。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了