Firstly, this paper advanced a control system based on the low-voltage power line carrier.
首先，论文提出了一种基于低压电力线载波技术的总线式控制网络。
Channel estimation is researched for OFDM system in low-voltage power line communication in this paper.
本文主要研究基于OFDM的低压电力线通信信道估计算法。
At last it proposed the application and expectation of low-voltage power line communications in Home Networking.
最后提出了它在家庭网络中的应用和展望。
The data communication hardware and software of low-voltage power line based on coding method are built on RISE3201.
在编码方法的基础上搭建基于RISE3201低压电力线数据通信硬件和软件部分。
Therefore, there is a wide foreground for the study and application of low-voltage power line communication technology.
因此，研究、开发和应用低压电力线载波通信技术具有非常重大的意义和十分广阔的前景。
A mass of power electronics equipments with nonlinear characteristic are the main source of harmonics in low-voltage power system.
低压电力系统中大量具有非线性特性的电力电子设备是产生谐波的主要原因。
Orthogonal Multi-Carrier Modulation(OMCM) is adopted to overcome the frequency selectivity and time variation of low-voltage power line channel.
为克服低压电力线信道的频率选择性和时变性，系统采用正交多载波方式传输信息。
OFDM technique has been the mainstream in low-voltage power line communication because of its good capability against interference and high transmission rate.
OFDM技术以其抗干扰性强，传输速率高成为低压电力线高速通信的主流技术。 信道估计算法是OFDM系统接收端的关键技术之一。
Due to many advantages of Orthogonal Frequency Division Multiplexing technique, it becomes the best choice for low-voltage power line broadband communication.
正交频分复用技术以其多种优势成为低压电力线宽带通信的最佳选择，信道估计是正交频分复用系统的关键问题之一。
The system requires two improvements: (1) the ability to counter the severe communication condition of low-voltage power line and (2) the ability to transmit music signal.
系统还需要在两个方面进行改进：(1)抵抗低压电力线恶劣通信状况的能力；(2)适合于音乐信号的传送。
This paper introduces the parameter selection, installation, grounding mode of low-voltage power grid and construction method of residual current operated protective device.
文中详细论述了剩余电流动作保护装置的参数选用，安装要求，低压电网接地方式及安装施工要求等。
In this paper, the authors have proposed the principle and realization of the low-voltage part of the power system applied in a diagnosing device for low-voltage power cable.
本文介绍了作者研制的一种低压电力电缆故障诊断装置电源系统(低压电源部分)的原理、实现方法。
The low-voltage power line channel properties are analyzed in this paper and a decision feedback channel estimation method is proposed on condition of slow time-variant of channel.
该文分析了低压电力线信道特性，利用信道慢时变的特点提出一种适合于电力线信道的判决反馈信道估计方法。
The testing results show that compressed digital images transmitted over low-voltage power lines maintain good quality which has high clarity and naturalness within a certain distant.
实验结果是在某一距离以内，压缩的数字图像信号经过低压电力线路传输后质量得到保持，具有较高的清晰度和自然度。
The appearing and improving of intelligent type low-voltage circuit breakers enable short circuit breakdown protection for low-voltage power distribution network to be more reasonable.
低压智能型断路器的出现及完善，使低压配电网络的短路故障保护更趋合理。
At present, the reactive power imbalance of low-voltage power network is more and more serious. It not only affects the operating efficiency of equipments, but also the safe operation.
当前低压电网无功不平衡的现象日趋严重，这不仅影响了用电设备的运行效率，而且还影响其安全运行。
Through this paper, the low-voltage power line network and channel characteristics are researched. The noise and attenuation characteristics of power line channel are measured and analyzed.
本文首先分析了低压电力线网络的特点及信道特性，对电力线信道的噪声和复衰减特性分别进行了测量及分析。
The article introduces the application of geographical information system(GIS)in low-voltage power distribution in order to improve the power supply service and the power enterprises benefit.
文章通过介绍地理信息系统（GIS）及其在低压配电中的应用，以提高供电服务质量和电力企业效益。
The existing condition of low-voltage power supply system of mine underground was analyzed, in view of the existing problems of low-voltage power supply line, the improvement scheme was proposed.
分析了矿山井下低压供电系统的现状，针对低压供电线路存在的问题提出了改进方案。
The hotel, which can be set up in any place, provides a private bathroom, wooden flooring, a heating system and low voltage power supply.
酒店中包括私人浴室、木质地板、供热系统以及低压电源。
Low voltage power distribution cabinet, power distribution chest and lighting chest.
低压配电柜，动力配电箱、照明箱。
Considering limitations of the passive power filter (PPF), a reform method of PPF for low voltage power grid was presented.
针对无源滤波器的缺陷，提出了一种低压电网无源滤波器改造方案。
This article introduces the fundamental of direct current regulator, and designed a low - voltage power which can inspire the laser instrument.
介绍了直流稳压电路的基本原理，并设计了能激发激光器的低压电源。
The characteristics of power line channel are the foundation of designing the low voltage power line carrier communication system.
低压电力线信道特性是设计低压电力线载波通信系统的基础。
Cables of low voltage, power cables and control cables should be laid separately if there are division boards inside the tray.
低压，动力、控制电缆应分开敷设(如果桥架内有隔板)。
PT breaking and ferro-resonance caused by single-phase grounding and PT saturation are common faults in medium-low voltage power networks, which make voltage abnormal.
在中低压电网中，PT断线、单相接地及由PT饱和引起的铁磁谐振均是多发性的故障，这些故障都能使电压异常。
The Wigner Ville time frequency analysis in conjunction with properly selected OFDM parameters is applied to evaluate the signal dynamic range performance over the low voltage power line network.
为了研究OFDM信号在低压电力线上的传输情况，运用基于维格纳分布的时频分析方法对电力线上的信号进行分析。
The Wigner Ville time frequency analysis in conjunction with properly selected OFDM parameters is applied to evaluate the signal dynamic range performance over the low voltage power line network.
为了研究OFDM信号在低压电力线上的传输情况，运用基于维格纳分布的时频分析方法对电力线上的信号进行分析。
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