Using the test signal method, a detailed analysis of subsynchronous oscillation for a HVDC system is performed.
对一个仅含有直流输电线路的系统，采用复转矩系数——测试信号法，对其次同步振荡特性进行了分析。
When a HVDC system operates in ground-return mode, some problems such as noise rising significantly, overheating etc. occur in AC transformers, or even some transformers would be damaged.
HVDC系统以大地回路方式单极运行时，其大地回路直流会给交流变压器带来一些问题，例如，变压器噪音明显增大，过热现象，甚至引起变压器损坏。
Compared to the ac Transmission and local power generation, HVDC light system is not only cost advantages, it also exchanges to enhance ac power quality for a new approach.
比起交流输电和本地发电，轻型高压直流输电系统不仅具有成本优势，它也对提高交流电网电能质量提供了新的途径。
A novel fault tracking approximator for fault diagnosis scheme of high voltage direct current transmission (HVDC) system is proposed.
提出了一种新的故障跟踪估计器来诊断高压直流输电(HVDC)系统中的故障。
A novel index named comprehensive unit interaction factor is proposed to quantify the torsional interaction in an ac system with multiple HVDC converters.
提出了一种衡量多换流站系统机组扭振作用的新指标一综合机组作用系数。
The robust adaptive control law is proposed for a HVDC power modulation controller of the interconnected AC/DC power system.
设计了应用于交直流互联电力系统的直流功率调制的非线性鲁棒自适应控制器。
In future, several HVDC systems will set in Shanghai, which is expected to create a multi-inked HVDC system.
未来多个直流输电系统落点于上海地区，将构成多馈入直流输电系统。
The influence of HVDC converter controls on the mode damping of sub-synchronous oscillations (SSO) in a AC/DC power system is investigated in this paper by using eigenvalue analytical method.
采用特征值分析法研究交直流电力系统中HVDC换流器控制对次同步振荡（SSO）模态阻尼的影响。
A hybrid modulation method is proposed for the HVDC system using voltage sourced converter (VSC) technology, which performs satisfactorily both in steady state and in dynamic state.
提出了一种适用于基于电压源换流器的直流输电系统的混合调制方式，可满足输电系统的暂态响应和稳态特性的需求。
The optimal design of HVDC control and protection parameters in the case of large-scale ac and DC power system network is a valid measure to ensure achieving good transient and stable performance.
对大规模交直流网络下的高压直流控制保护系统进行参数优化设计，是保证灵活交流输电系统暂态性和稳定性良好的重要手段。
This paper analyzes the structure and principle of high voltage DC transmission(HVDC)system, builds a model of 6-impulse bridge HVDC system and makes a emulate on it.
分析了高压直流输电（HVDC）系统的结构和原理，建立了一个6脉冲桥HVDC系统模型并进行了仿真。
A wide-area measurement system(WAMS)based fuzzy adaptive coordinative damping controller is developed for multi-infeed HVDC system.
提出一种基于广域测量系统的多馈入高压直流（HVDC）模糊自适应协调阻尼控制器。
High voltage direct current (HVDC) aircraft electrical power generating system (EPGS) is a new type of aircraft power generating system.
飞机高压直流电源系统是一种新型的飞机电源系统。
To verify and evaluate the dynamic response performance of HVDC system, as a special topic, the dynamic performance of Gaoling HVDC power transmission project is researched.
为了验证和评估直流系统的动态响应性能，专题开展了高岭直流输电工程的动态性能研究工作。
On the other hand, the transient characteristics of the HVDC line fault and thus the line protections are affected by the HVDC control system, which is very complicated and still a hard nut to crush.
另一方面，线路故障后直流线路保护的暂态响应特性与控制系统强相关，而对直流系统这种特有复杂性对线路保护影响的研究较少。
The grounding grip of high voltage direct current(HVDC) power system was working in large currents more than 1 000 A for long-term.
高压直流输电系统的接地电流在1000A以上，为确保直流接地系统的安全运行，该文对直流电流密度与土壤电阻率的关系进行了研究。
HVDC Light is a new HVDC transmission system, based on Voltage Source Converters (VSC) and Pulse Width Modulation (PWM).
轻型直流输电是一种新型的直流传输技术，采用电压源型(vsc)换流站以及PW M控制技术。
A detailed user-defined UD auxiliary frequency controller AFC model of HVDC has been developed based on Power System Analysis Software Package PSASP.
基于电力系统分析软件包p SASP，使用其用户自定义功能，建立了辅助频率控制模型。
A detailed user-defined UD auxiliary frequency controller AFC model of HVDC has been developed based on Power System Analysis Software Package PSASP.
基于电力系统分析软件包p SASP，使用其用户自定义功能，建立了辅助频率控制模型。
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