直流系统环网是接地故障检测中的一个关键因素。
Loop net of DC system is an important factor in the grounding fault detection.
因此，级差配合问题就成为直流系统运行中一个比较关键的问题。
Therefore, the stage difference coordination problem with the operation of DC system has become a key issue.
该文提出了将贝叶斯网络应用于高压直流系统可靠性评估的方法。
A method of reliability evaluation for HVDC systems based on Bayesian network is proposed in this paper.
为保证直流系统的正常运行，查找直流接地故障的时间应尽可能缩短。
To ensure normal operation of the substation, the DC system grounding fault should be detected as quickly as possible.
实现直流系统过、欠压保护及电压显示的组合，装置的集成度非常高。
DC system had to achieve, under-voltage protection and voltage show a combination of device integration is very high.
随着技术的进步和市场需求的提高，多端直流系统得到了更多的关注。
Along with technical progress and market demand increase, MTDC system has obtained more attention.
直流系统是变电站一个重要的组成部分，直流系统接地是常见的缺陷。
The direct current system is an important component of the transformer substation, but its grounding is a common defect.
调节器的选型及参数配置情况直接影响和决定整个直流系统的运行特性。
Type and Parameters deployment of the regulators have direct effect on the operating characteristic of HVDC system.
介绍变电站微机型直流系统电压绝缘监察装置的硬件、软件框图及应用效果。
This paper introduces the hardware and software of microprocessor voltage insulation supervising equipment of DC system in transformer substation and effection of using it.
直流系统通常由蓄电池充电系统供电，蓄电池充电系统由低压交流系统供电。
The DC system is normally supplied from a battery charger system, which is supplied from the low voltage AC system.
为发电厂和变电站直流系统的可靠性、安全性，提供有效的检测和维护的手段。
For dependability, security of the power plant and transformer substation with DC system, offer effective measuring and maintenance means.
阀控式铅酸蓄电池简称VRLA电池，维护量小，在变电站直流系统广泛应用。
Valve regulated lead acid (VRLA) battery is applied extensively in substation DC systems as its less maintenance.
说明：半定规划内点法数据整理交直流系统统一无功优化算法，系数矩阵的确定。
Interior point method for semidefinite programming data collation ac and DC systems unified reactive power optimization algorithm to determine the coefficient matrix.
导出了描述CCC结构直流系统稳态特性的数学模型，主要由15个基本方程构成。
The mathematical model representing the CCC-HVDC system's steady-state characteristics is derived, which is composed of 15 basic equations.
蓄电池作为直流系统的重要组成部分，其性能的好坏直接影响到直流系统发挥作用。
Because the battery is a an important part of DC system, its performance will have a direct impact on the DC system.
由于直流传送功率的改变要快于交流系统，直流系统对控制整定值能迅速作出响应。
The DC system is capable of rapid response to changes in control setting, with DC power transfer changes occurring faster than in AC systems.
阐述直流接地的原因，介绍了直流系统接地查找原因以及在查找过程中的注意事项。
The paper discussed the reasons of DC system earthing and introduced the attentions while finding out its reasons.
介绍了2000 - 2004年东北电网公司直流系统的整体运行情况及管理情况。
This article briefs the overall operation and maintenance situation of direct current (dc) system in Northeast power Grid Corp. in 2000 -2004.
以安全性与可靠性相统一的原则，对伊敏电厂直流系统中采用的直流稳压器进行探讨。
Discusses the DC manostat used in the DC system at Yimin Power Plant in terms of safety and reliability.
要准确地对多馈入直流系统的谐波特性进行分析，需要建立一个准确完善的稳态模型。
To analyze the harmonic performance of the MIDC system accurately, a suitable steady model should be established.
针对工程中对直流电源屏的设计需要，简要介绍了高频开关整流电源直流系统的选择。
According to the design demand of DC power supply panel in engineering, this paper introduces the selection of rectification DC rectification power system with high-frequency switch.
蓄电池是变电站直流系统的基本组成部分，是重要的储能设备，也是不间断电源的核心。
Battery is a basic part of substation DC system, and it is the important device of energy storage and the core of uninterrupted power system.
蓄电池作为直流系统交流停电时的后备电源，其剩余容量直接影响了直流系统的安全运行。
As backup power supply of the DC system, the residual capacity of battery effected safe operation of DC system directly when ac power failure occurs.
基于连续潮流法和原始一对偶内点法，提出了一种新的分段求解交直流系统负荷裕度方法。
A new segment solution for solving load margin of AC/DC power system is proposed in this paper based on continuation method and interior point algorithm.
蓄电池作为直流系统交流停电时的后备电源，其非正常失效严重影响了直流系统的安全运行。
The abnormal failure of battery which works as the backup power supply for DC system when ac power failure occurs, will affect the safe operations of DC system seriously.
目前广泛使用的低频信号检测法容易受到直流系统支路中存在的对地分布电容和环网的影响。
The detection method of low frequency signal injection, which is widely used, is easily influenced by the capacitors between ground and each branch and by the ring net.
变电站直流系统接地将会对变电站的设备造成损害，同时对变电站各设备的安全运行产生极大威胁。
Substation DC system grounding of substation equipment will cause damage, at the same time the substation on the safe operation of equipment to produce a great threat to.
仿真结果表明，非线性变结构控制可以有效地调节直流线路的传输功率，保证交直流系统的稳定性。
The result indicates the nonlinear variable structure control can adjust the transmission power of DC line effectively, and assure the stability of the AC-DC system.
通过数字仿真，比较了交流载波系统和其等效直流系统，验证了交流载波系统等效直流方法的可行性。
By digital simulation, the Ac carried wave system and its equivalent Dc system are checked and the feasibility of Dc method equivalent to the Ac carrier wave system is verified.
通过数字仿真，比较了交流载波系统和其等效直流系统，验证了交流载波系统等效直流方法的可行性。
By digital simulation, the Ac carried wave system and its equivalent Dc system are checked and the feasibility of Dc method equivalent to the Ac carrier wave system is verified.
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