Most faults in power distribution systems are single phase to ground faults.
小电流接地系统发生最多的故障是单相接地故障。
The control and protection system in DC power distribution systems plays a very important role in ensuring the mass transit railway safe and reliable operation.
直流供电的控制和保护系统对确保轨道交通的安全、可靠的运行，具有举足轻重的作用。
On the basis of active power filter linear shunt transformer harmonic impedance control, a novel principle for high voltage alternate power distribution systems is proposed.
针对高压交流配电系统，提出一种基于线性并联变压器谐波阻抗控制的并联型有源电力滤波器新原理。
An optimal solution is obtained under certain conditions. The model proposed is applicable not only to power distribution systems, but also to other similar distribution systems.
在采种条件下，所得到的解是最优解，文中所提出的模型不局限于配电系统，亦可适应其它各种类似的集散系统。
Based on the practice of closed-loop operation of power distribution systems, this paper presents the major content of planned function objectives and the retrofit of distribution network automation.
通过闭环运行配电自动化系统的实践，简要介绍了配电网自动化的规划功能目标及改造的主要内容。
systems of inheritance and land rights, affecting the distribution of power and material goods within families;
继承体系和土地权，这会影响到家庭内部的权力和物质分配；
The infrastructure is not intelligent: roads, power grids and water-distribution systems are all essentially networks of dumb pipes.
基础设施未智能化：道路、电网及配水系统基本都是哑管道网络。
Power systems operators monitor and operate switchboards and related equipment in electrical control centres to control the distribution of electrical power in transmission networks.
电力系统操作员监视和操作交换机及电气控制中心的相关设备，控制传输网络中电力的分布。
Originally designed for Natural Gas distribution systems, the new MP2400LP locks in last position and USES power only when pressure adjustment is required.
最初设计用于天然气分配系统，新mp2400 LP在最后的位置锁定，也只能用调整压力时所需的动力。
Electrical power line and cable workers construct, maintain and repair overhead and underground electrical power transmission and distribution systems.
电源线和电缆工人建造，维护和修复架空线和地下电力传输和配电系统。
The solution pumps hot water from a power plant through underground pipes to heat exchangers which heat up water in the secondary distribution network and feed it into consumer radiator systems.
该解决方案把热水从发电厂抽上来，通过地下管道至热交换器，热交换器在二级分配网络上将水加热，然后将它流入用户的散热器系统。
With more power cable application in transmission and distribution systems, the higher demand of cable fault location accuracy is necessary for reduction of the power cut loss.
电力电缆日益广泛地应用于输配电系统，为了减少电缆故障停电损失，对电缆故障测距的精度要求越来越高。
However, the digital random vibration control systems currently based on power spectrum fitting can only generate random vibration exciting signals with Gaussian probability distribution.
然而，目前基于功率谱均衡的数字式随机振动控制系统只能产生高斯分布的随机振动激励信号。
The Siemens scope of supply includes power equipment such as medium and high-voltage transformers as well as all the high, medium and low-voltage distribution systems.
西门子供给范围包括电力设备，如中压和高压变压器以及所有高、中、低压配电系统。
Scope This manual describes protection techniques for electrical power supply and distribution systems.
范围本手册介绍了电力供应和分配系统的保护技术。
The configurations and operation conditions of distribution power networks are getting more and more complicated with the rapid developments of modern power systems.
随着现代电力系统的飞速发展，配电网的结构和运行情况日趋复杂。
Static var generators are used to improve voltage regulation, stability, and power factor in ac transmission and distribution systems.
静止无功发生器可提高交流输电系统和配电系统的电压调节能力、系统稳定性和功率因数。
Manufacture of electronic regulators, steering systems and similar devices for electric drive units, power, distribution, and specialty transformers.
制造电子调节器，操纵系统及电力驱动单元用的类似装置，特种配电变压器。
Hardware and software design of reactive power automatic compensation controller for low-voltage distribution systems is introduced.
介绍了低压配电网无功功率自动补偿控制器的软件和硬件设计方法。
This article introduces the instrument control systems power supply and its relative load distribution plan.
介绍了仪表控制系统的供电原则及仪表控制系统的负荷分配方案。
Reactive power supply programming in distribution network can improve voltage and decrease power loss, it is important for the running of systems more safe and economical.
配电网无功电源规划能够有效地改善电压水平、降低网损，对系统安全经济运行具有重要意义。
Based on this, it is presented to a new method on bad data of distribution systems monitored and modified and a distribution state estimation based on matching power flow.
由此提出了一种新的配电系统不良数据检测及校正的方法，并给出了一种基于配电网匹配潮流状态估计方法。
It is suggested that the MOA used for EHV power systems needs to be taken comprehensive measurements to improve the potential distribution.
分析表明：超高压MOA电位分布的改善宜采取综合改进措施。
In search of many social and economical systems, it is found that node strength distribution as well as degree distribution demonstrate the behavior of power-law with droop-head and heavy-taft.
许多实证复杂网络的度分布和点权分布表现为低头和胖尾的幂率分布。
The desirable scheme of capacitor placement in distribution systems aims at achieving voltage regulation and power loss reduction, while preventing harmonic resonance or magnification.
配电网合理的电容器配置不仅可以有效改善电网的电压水平，降低系统的有功网损，而且能够避免谐波谐振或电流放大。
The paper introduces the concept and structure of premises distribution systems, and its application in building of electric power conduct and communication.
介绍了综合布线系统的概念及其构成，以及它在电力调度通信大楼中的应用。
The paper introduces the concept and structure of premises distribution systems, and its application in building of electric power conduct and communication.
介绍了综合布线系统的概念及其构成，以及它在电力调度通信大楼中的应用。
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