Back to back HVDC system had been used to join ac systems.
背靠背高压直流输电(HVDC)系统已经在交流系统连网中得到了应用。
Control and protect section is the most pivotal section in HVDC system.
高压直流输电系统中最关键的部分是控制保护部分。
The performance of its basic controller decides the operation condition of HVDC system.
HVDC系统能否正常运行与其基本控制器的性能息息相关。
So it's quite necessary to study HVDC system and the optimization of parameters of the control system.
因此对高压直流输电系统及其控制器参数优化的研究是十分必要和重要的。
The reliability model and analysis method of the converter valves in VSC-HVDC system is mainly concerned.
文章主要对柔性直流输电换流器的换流阀进行可靠性建模与分析。
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。
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。
It is necessary to quantitatively calculate the losses of HVDC system to reduce its loss and improve its economy.
为进一步降低直流输电系统的网损，提高直流输电系统的经济性，有必要对直流输电系统的网损进行定量计算。
Type and Parameters deployment of the regulators have direct effect on the operating characteristic of HVDC system.
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。
In addition to handling the power exchange, this sophisticated HVDC system can stabilize voltages and frequencies on Sardinia.
除了处理电力转换交流，该复杂的HVDC系统还可以稳定撒丁岛的电压和频率。
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。
Through studying, the mechanism of the subsynchronous torsion oscillation caused by the controller of HVDC system has been understood.
对该问题的研究解释了由高压直流输电系统控制器诱发汽轮发电机组轴系扭振的机理。
The classical converter model has been proved to be insufficient in representing the characteristics of the DC side harmonics in HVDC system.
HVDC直流侧谐波计算中经典换流器模型不能完整再现换流器直流侧的谐波某些特性。
According to VSC-HVDC system requirements and the design scheme, the characteristics of the high-power VSCs of wind farm side and grid side are studied.
根据轻型直流输电系统要求及本文的设计方案，研究了机组侧和网侧的大功率VSC的特性。
According to the given topology of voltage source converter based HVDC system (VSC-HVDC), three-phases mathematic model in stationary frame is established.
在讨论电压源型高压直流输电（VSC-HVDC）的控制策略中，根据所给出的拓扑结构，建立三相静止系统下的数学模型；
The strong coupling and nonlinearity of VSC-HVDC system with the LC filter in the synchronous rotating frame brings difficulty to the design of its controller.
在同步旋转坐标系下，包含LC低通滤波器的VSC-HVDC系统表现出强耦合、非线性特性，不利于控制器设计。
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。
Based on electrical circuit theory, the formulation of the relation between mutual admittance and converter commutation voltage of the multi-infeed HVDC system was given.
基于电路基本理论知识，推导出多馈入交、直流并联的高压直流输电系统耦合导纳和换相电压关系表达式。
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。
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。
Taking Zhoushan HVDC system as an example, the paper discusses how to realize frequency adjusting in an inverter and how the converter cooperates with the inverter in the operating mode.
本文以舟山HVDC系统实际情况为例，探讨了逆变侧如何实现频率调节以及和整流、逆变两侧其它调节器在运行方式上如何配合。
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。
The adequacy estimation of power system with HVDC is investigated, including the effect of network loss and voltage, as well as the component backup of HVDC system on system reliability indices.
最后对含hvdc线路的发输电系统进行了充裕度评估，研究了网损、电压及HVDC系统元件备用等因素对交直流系统可靠性指标的影响。
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。
At the same time, problems of the DC grounding system are valuable because it is not only significant in HVDC operation but also affects the AC system nearby.
同时，直流接地极关系着高压直流输电系统的安全运行，对于附近的交流系统也有影响，其中的一些问题也十分值得研究。
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。
The reliable HVDC pole blocking universal criteria are studied, initiated and applied in the stability control system.
研究并提出了可靠的直流极闭锁综合判据，并将其应用到稳定控制系统。
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。
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。
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