单机补偿电容器的应用

提高电能质量,采用补偿电容器方法和提高功率细因数     

筒式风能采集系统及其试验研究

为了克服现有技术中风能采集装置对风速或风向适应能力不足、风能利用率不高的问题,提出了一种适合城市高空风能利用的新型筒式垂直轴风力发电系统,其不仅具有很强的风向适应能力,而且能够在较低风速时,充分利用导风板将风力集中到筒式风能采集系统内,提高了风轮利用风能的效率。这种风力发电系统将与城市高层建筑构成一体化,充分利用高空风能优势进行发电,噪音小,不会给城市的生活和工作带来影响。介绍了该筒式风能采集系统的主要组成部分,以及实验结果,初步证实了该设计的可行性。     

我国林业小型动力机械发展回顾与现状

林业小型动力机械是生产批量最大的林业机械产品,在林业生产中发挥着重要作用。介绍了林业小型动力机械所包含的产品类型、相关的协会和学会等组织机构及其在国内发展的历史和生产现状;指出了我国产品质量与先进国家之间的差距,以及科研和人才培养等方面存在的不足。     

Influence Analysis Energy and Environment with DSM

As a large burning coal country, resolving the SO2 letting problem is the most important thing in the environment protection work. Electric power industry reveals the supply's load rate declining and the discrepancy between apex and vale augments year after year. It makes the load adjustment become an imminency task in the electric power industry. The article popularizes the light power saving technology in the inhabitant living lighting power through reinforcing the DSM technology. It studies the influence on energy and environment after using the technology. It studies avoidable electricity quantity, avoidable electricity power, avoidable apex load, avoidable coal consuming and avoidable SO2 lettling. At last, it makes a concrete analysis with a city's example.     

Parameter Design for the Power Train and Simulation of the Dynamic Performance of Elctrical Vehicle

The method and principle of the parameter design for the power train of EV is explored and discussed,then the parametersof EV. based on SC7101 are reasonably selected.The method of calculating the SOC of Lead_acid battery is provided and the relation among the electromotive force,the interior resistance, the polarized resistance and the SOC are analyzed. The capacity is compensated according to the relation between the capacity and the temperature, which is the basis on which the energy management system is designed and improved. The dynamic model which reflects the dynamic characteristics of the power train is established,then the dynamic performance of the EV based on SC7101 is simulated, and the factors that affect the continuous mileage of EV are analyzed,the measures to increase the continuous mileage are provided.The result shows that the analysis of the electric characteristics of battery and the dynamic model are correct,and the dynamic performance perfectly meets the need of the design target.     

A Vovel Constracture of Combinatorial Knowledge Base for the Expert System of Eletrical Switching

By comparing the techniges of the production and the logic predicate for knowledge representation, this paper presents a kind of constructure of combinatorial knowledge base applied to the expert system for switch operation in electric power system . This constructure of knowledge base to be expanded and revised easily,and it is cinvenitnt to build the general shell of the expert system.     

An Improved Method of the Transient Waveform Analysis in Power Systems

The angular frequency and decaying constant of each copmonect for the transient waveform in power systems were obtained by using the discrete Fourier transform; the amplitude and phase angle were calculated in the linear curve fitting method. And all of the parameters obtained above were treated in an unified optimization by using the curve fitting optimization of the least square method of general nonlinear funcrion so as to get the results of waveform analysis. Two examples are included.     

Study on ES Based Generation System Planning

Based on the analysis of expert experience on generation system planning(GPS), the theory of knowledge based method is introduced into GPS to express the constraints of engineering(viz. Expert experience of engineering), and to discard abundant improper program during the earlier stage of GPS. In this situation, the difficulty degree of optimizing calculation in the later stage of GPS is lessened. And then, integrating expert system with production simulation in a method of GPS is proposed and is verified with an example. The results show that the method presented is effective.     

浅谈“光伏+农业”产业的发展模式

农业在中国经济发展中起着重要作用,是中国社会经济发展的基础。近年来,随着农业机械化以及科技现代化不断推进,多种现代科学技术逐渐在农业产业中得到应用,其中光伏发电技术在农业上的应用对于农业产业转型有着重要意义,是中国农业产业发展的强有力推手。光伏农业是将光伏发电与农业生产相结合的一种绿色、环保的全新产业模式,是集太阳能光伏发电、智能温控系统、现代高科技种植、养殖为一体的农业产业,有着非常广阔的应用前景。本研究综述了光伏农业中主要的几种结合形式：“光伏+种植业”、“光伏+畜禽业”以及“光伏+渔业”的业态,分析了各结合形式的研究现状和面临的问题,并对光伏农业发展趋势进行了合理展望,以期为未来光伏农业的发展提供参考。     

中国农村电力普遍服务的理论基础分析

市场化改革之后。通过交叉补贴实现电力普遍服务的机制不可能实施,中国农村电力普遍服务的理论基础值得探讨。农村电力普遍服务是一种特殊的再分配方式,它是缩小地区差距、保证地区均衡发展的重要途径。是实现社会和谐稳定的基础。认为电力产业具有的网络特性、自然垄断性和准公共物品特征,这些因素都可能导致市场失灵,要保证公众所需要的基本生活用电,必然要求建立相应有效的公共政策。