| 1. | A new method of measure for work power of three electric circuit
三相电路有功功率测量新方法 |
| 2. | Several problems about measuring the power of three - phase circuit
测量三相电路功率常见的几个问题 |
| 3. | Harmonic current detection algorithm of three - phase circuit based on dsp
的一种三相电路谐波电流检测算法 |
| 4. | Balanced three phase circuit
平衡三相电路 |
| 5. | The instantaneous reactive power theory in three - phase circuits based on - co - ordinate shows its defect when applied to single - phase circuit
由于基于-坐标系的三相电路瞬时无功功率理论，在适用于单相电路时表现出其不足之处。 |
| 6. | The three - phase circuit that has balanced three - phase sources , balanced ( equal ) three - phase loads and balanced three - phase line - impedances is called a balanced three - phase system
一个具有对称三相电源，对称三相负载和对称三相线路阻抗的三相电路被称为三相对称电路。 |
| 7. | Abstract : the three - phase circuit is regarded as some of drive of the whole power system in actual project , it has its special meaning in practical application carry on correct use and particularly important control to it
摘要：三相电路作为实际工程中整个电力系统的驱动部分，在实际应用中有其特殊的意义，因此对其进行正确的利用和控制尤为重要。 |
| 8. | By studying traditional instantaneous power theory in single - phase circuit , we developed a real - time detecting method in this paper based on digital technology , which can detect harmonic current and fundamental reactive current in both single - phase and three - phase circuits
本文通过对于单相电路瞬时功率理论的分析研究，提出了一种基于数字技术的单相和三相电路谐波和无功电流的实时检测方法。 |
| 9. | At first , the dissertation author analyzes the measure method characteristic of three - phase three - line system and three - phase three - line system by power measure principle , and analyzes all kinds of power theft way , then concluding them to five styles : voltage style , current style , change phase style , enlarge error style , shunt style
论文从电能计量原理和准确计量方法入手，简要介绍了电能计量的发展历史，单相电路和三相电路的各种计量方式。其中重点介绍了三相三线经电流互感器和电压互感器接入式和三相四线只经电流互感器接入式这两种计量方式。 |
| 10. | In order to get effective control parameter , the real time detecting method for the reactive current is specified by using the instantaneous reactive power theory of three - phase circuit . on the basis of lonworks technology , hardware and software structure of intelligent node is designed , a / d sampling and data traffic by applying network variables are researched in detail . finally , the network node is configured by employing the lon works exploiting tools , monitor - control of host computer for lonworks network and detecting method for network data are studied dependent on the lns dde server
本文基于已建立的系统总体结构，分析了无功功率补偿的关键技术、补偿执行单元的接线方式和补偿电容器组的分组方式；依据无功功率补偿原理，构建了补偿电容器组投切控制装置的结构，并确定了补偿电容器组的投切控制方式；为了获取有效的控制参数，确定了利用三相电路瞬时无功功率理论对无功电流进行实时检测的方法；以lonworks技术为基础，设计了智能节点的软、硬件结构，特别是对a d采样以及利用网络变量进行数据通信等方面做了详细研究；最后，利用lonworks开发工具对lonworks网络节点进行了配置，并通过lnsdde服务器，研究了上位机对lonworks网络的监控以及对系统网络数据的检测方法。 |
