负荷特性

基于CPLD和USB技术的电力负荷特性在线采集系统设计

Design of On-Line Acquisition System of Electrical Load Characteristic Based on CPLD and USB Technologies

本文提出的基于CPLD的高速A/D转换器的控制系统已成功地应用于电力系统综合负荷特性数据的实时采集。

The high-speed A / D converter based on CPLD is applied for the real-time sampling in integration load characteristic data acquisition in power system .

基于模糊C均值法可以通过优化理论获得聚类中心矩阵，同时完成负荷特性分类与综合。

The latter can obtain the optimal clustering center and aggregate characteristics of load synchronously .

1000t／h双炉膛直流炉低负荷特性试验

Low Load Performance Test of 1000t / h Twin-furnace Once-through Boiler

FAI二冲程缸内直喷发动机怠速及低负荷特性研究

Study on Idle and Low-load Properties of FAI Two-stroke DISI Engine

采用时域仿真与小扰动分析方法，分析不同的负荷特性对系统阻尼以及对PSS参数整定的影响；

The paper uses Time-Domain simulations and Small-Signal analysis to show that different load characteristics have different influences on system damping .

全负荷特性和全负荷速度特性工况时，pz、φA和φB的循环变动都有各自的规律。

The variations of p z , φ A ,φ B have their own regular patterns on the load characteristics and full load performance .

运用Apriori算法对负荷特性影响因素进行关联度分析，给出各相关因子与负荷特性的关联度。

It adopts Apriori algorithm to analyze how those affecting factors are related and their degree of relativity with load character .

本平台基于模块化设计思想，以湖南省SCADA系统Oracle数据库为数据源，将平台设计为自动接口平台和变电站负荷特性分类模块两个模块。

This application platform data Sources of Oracle Database SCADA system in Hunan province based on modular design consists of automatic Interface platform and load characteristics classification module of substation .

300MW与600MW燃煤机组耗差系数的变负荷特性

Off-design Load Characteristics of Consumption-deviation Coefficient of 300 MW and 600 MW Coal-fired Power Units

以尺寸稳定型聚酯（DSP）和改性锦纶66帘线作为轿车和轻型载重子午线轮胎的胎体骨架材料，对比分析轮胎外缘尺寸和静负荷特性。

The dimension-stable polyester ( DSP ) and modified nylon 66 cords were applied in the carcass ply of PCR tire and LTR tire , and the overall diameters and static loading capacities of test tires were compared .

结果表明：在整条负荷特性曲线上，生物柴油的NOx排放高于柴油；随着生物柴油掺混量的增加，NOx排放量明显增加；而掺混20%甲醇时，NOx排放明显降低。

The results showed that , in the whole pme-NOx curve , biodiesel NOx emission is higher than diesel ; As the proportion of biodiesel increases , NOx emissions increased significantly .

本文研究影响空调机部分负荷特性的因素，并根据季节性能系数SEER的提出，分析压缩机容量调节的必要性。

By way of analysing Seasonal Energy Efficiency Ratio , this paper investigates the necessity of capacity control for compressor .

根据发动机负荷特性试验结果，验证了在此供油提前角的情况下，EGR控制系统的实际控制效果达到最佳。

It is proved by test results of load performance that the actual control effective ness of the EGR control system is optimum under this fuel advance angle .

以变电站各行业的构成比例作为分类特征向量，利用SOM神经网络对某电网48个变电站负荷特性进行了分类与综合，取得了令人满意的结果。

Using industry load composition of each load substation to form feature vector , 48 substation load characteristics are classified and synthesized by using SOM neural network , the results are satisfactory .

在分析中小屏幕TFT-LCD驱动芯片的负荷特性的基础上，提出了一种新型的驱动电压输出缓冲电路结构。

Based on the detailed analysis of the loading properties of a medium or small size TFT-LCD driver IC , a novel output buffer circuit of driving voltages is proposed .

在发动机的功率及负荷特性试验条件下，测试了催化箱对发动机功率、油耗、排气阻力及噪音等的影响，测试了排气中HC和CO的净化效果。

Effects of catalytic purifier on power , oil wastage , exhaust resistance and noise of the engine , and the exhaust emissions of HC and CO were investigated under the conditions of power and load test of the engine .

文章在比较了多种数据数据采集系统结构的基础上，按照电力系统负荷特性数据采集系统的要求，选用了一种基于CPLD和USB技术的系统设计方案。

On the basis of comparing many structures of data acquisition system and following the requirements of data acquisition system of electrical traction load characteristic , the design of the system based on CPLD and USB technologies will be selected .

针对电力系统负荷特性，分析灰色模型GM（1,1）的应用局限性，引入向量α改进灰色模型背景值序列的计算公式，从而构建了适应性更强的GM（1,1，α）模型。

According to the load characteristic of power system and the application limitation of grey model GM ( 1,1 ), vector is introduced into the computing formula of background value array . A new model GM ( 1,1 ,) which bears higher adaptability is constructed .

在充分掌握上海电网负荷特性之后，针对上海市调AGC控制要求，提出一种基于改进相似日的超短期负荷预测方法。

After the fully grasping of the load characteristics in shanghai , a method for ultra-short term load forecast based on improved similar historical day data has been proposed according to the requirement of AGC control of Shanghai control center .

通过离线采集的行业综合负荷特性数据、EMS系统和负控系统采集的负荷组成数据，进行综合负荷特性分析，建立负荷模型，组成负荷模型群。

Based on the in-dustry integrated load characteristic data from the offline collection , and the load compositive data from the EMS systems and Load Control System , load characteris-tics are comprehensively analyzed , load model established and load model group formed .

根据负荷特性和ATSE在整个供配电系统中的位置选择转换类型及转换时间；

Transfer type and transfer time should be selected according to load characteristic as well as the location of ATSE in the whole power supply and distribution system .

对于板单元的弹性变形，用Hertz接触公式，将其变形以等效间隙代入总体矩阵方程中，从而获得轧机滚动轴承负荷特性的三维分布。

As the elastic deformation of plate unit , it can be calculated by Hertz contact formula and is regarded as a gap to be substituted to the total matrix equality , so the three dimensional distribution of load peculiarities of mill roller bearing can be achieved .

在中长期电压稳定分析中，OLTC分接头调节、OLTC采用的控制方式、发电机电流限制和无功功率限制以及不利的负荷特性都对中长期电压稳定性有影响。

In mid-term and long-term voltage stability analysis , the test results shows that OLTC tap changing , OLTC control mode , generator current limits , reactive power limit and unfavorable load characteristics have effects on mid-term and long-term voltage stability .

主要成果概述如下：（1）在分析短期电力负荷特性的基础上，建立了基于SCE-UA支持向量机的短期电力负荷预测模型。

The main contents and research process are as follows : ( 1 ) By analyzing of the features of short-term power load , Support Vector Machines ( SVM ) model , which parameters are estimated by SCE-UA algorithm , is presented as promising method for short-term load forecasting .

具体研究内容如下：（1）根据JL474Q1发动机试验数据，绘制发动机外特性和部分负荷特性曲线，采用样条插值的方法构造发动机转矩模型和发动机燃油消耗模型。

The concrete research contents are listed as follows : ( 1 ) According to the data of engine experiment , the external characteristic curve and partial load characteristic of engine are drawn . Engine torque model and fuel consumption model are constructed using spline interpolation method .

动态负荷特性对小扰动电压稳定性的影响

The Influence of Dynamic Load Characteristics on Small Disturbance Voltage Stability

一种基于负荷特性参数识别的电压稳定分析方法

A voltage stability analysis method based on load characteristic parameters recognition

本文讨论非线性电力负荷特性分析问题。

The paper discusses the problem of non-linear power load characteristics .

综合传动装置箱体的热负荷特性研究

Study on Heat Load Performance of Cases in Comprehensive Drive Transmissions