The CVCF-SPWM inverter is the core of a UPS system which required high quality output voltage waveform.
SPWM逆变器是UPS系统的核心部件，要求它具有高质量的输出电压波形。
Reactive compensation and reactive equilibrium of electrical system are the basic conditions for guaranteeing voltage quality.
电力系统的无功补偿与无功平衡是保证电压质量的基本条件。
In the power system, the voltage problem is not only a power supply quality problem, and is related to the system safety and economical operation.
在电力系统中，电压问题不仅是一个供电质量问题，而且是关系到系统安全和经济运行的重要问题。
Reactive power optimization is an effective method to keep power system safe and economy, and it's an important measure to improve voltage quality.
电力系统无功优化配置是保证电力系统安全、经济运行的一项有效手段，是提高电压质量的重要措施。
Application of high power electronic elements in power system makes current and voltage waves distorted and degrades the quality of electric energy.
大功率电力电子器件的应用，使得电网电流或电压波形产生畸变，进而使系统的电能质量下降。
Voltage is one important standard of power quality, steady voltage controlling is one important work of keeping safe and stable running of power system.
电压是电能质量的重要指标之一，电压稳定控制是驾驭电力系统安全稳定运行的重要工作之一。
Through power flow calculation of tie lines, the effects of the changes in generation, load and network structure on the voltage quality and safe and economic operation of the system can be analyzed.
通过联络线的潮流计算，可以分析发电出力和负荷以及网络结构的改变对系统电压质量和安全经济运行的影响。
Reactive power optimization is of great importance to voltage quality guarantee, power loss minimization and thus security and economic operation of power system.
电力系统无功优化对保证电压质量、降低运行损耗，实现电网的安全经济运行具有重要意义。
Results from economic analysis and case simulations show that using this approach the transient voltage quality level in distribution system can be evidently improved without cost increase.
经济性分析和算例结果表明，该方案在不增加成本的前提下大大提高了配电系统的暂态电压质量。
The producing reason of residual voltage at zero point and its affection to the nonlinear quality and sensitivity of measurement system were analyzed extensively.
介绍了差动变压器式传感器的结构和输出特性，详细分析了其零残电压产生的原因，以及对测量系统非线性和灵敏度的影响。
Var optimization is core problem of voltage stability and economic operation of electric power system, also important measure to improve voltage quality.
无功优化是电力系统电压稳定与经济运行的核心问题，也是提高电力系统电压质量的重要措施。
The voltage and reactive power control system for substations can improve voltage quality and reduce the active power loss.
变电站电压无功控制系统可提高电压的质量和降低电网的有功损耗。
The voltage and inactive power control of substations have become necessary measures to ensure the voltage quality and inactive power balance and improve the reliability and economy of power system.
变电站电压、无功控制已成为保证电压质量和无功平衡，提高电力系统可靠性和经济性必不可少的措施。
Reactive power optimization of power network is an important problem which directly influences voltage quality of the system as well as which relates to economical operation of power network.
对电网进行无功电压优化，是一个既直接影响系统电压质量，又关系到电网经济运行的重要问题。
The voltage and reactive power control system can improve voltage quality and reduce the active power loss.
电压无功控制系统对于提高电压质量，降低电网的有功损耗有着重要的意义。
Reactive power optimization in power system is an effective means to improve voltage quality, reduce network losses and ensure power system operates in a secure and economical way.
电力系统无功优化是提高电压质量、降低系统运行网损、保证系统安全经济运行的有效手段。
In power system, the voltage pulsation and deficiency or surplus of reactive power will have a great effect on the quality of electric power supply.
在电力系统中，电压的波动和无功功率的过剩和不足会严重影响供电质量。
Series power quality controller (SPQC) can mitigate the voltage disturbances by superposing a voltage on the system voltage.
串联型电能质量控制器(SPQC)通过向系统电压中串联一个电压源来调节用户侧电压质量。
On the one hand, the power system with insufficient supply ability is comparatively weak to withstand disturbances, and on the other hand, it may cause many voltage quality problems.
容量较小的电网一方面承受干扰的能力较弱，另一方面，电网供电能力不足将会引发许多电压质量问题。
The general reactive power optimization is only to reduce the loss of the system and improve the quality of voltage, which is suitable when system has enough power capability.
传统的无功优化通常考虑的仅仅是提高电网的电压质量和降低网损，当系统的传输容量有足够的裕度时，这种只考虑经济效益和基本运行约束的做法是适当的。
It is necessary to use reactive power optimization to improve voltage quality, reduce operation network loss and improve security and stability of the operation system.
通过无功优化来改善电压质量、降低运行网损以及提高系统运行的安全稳定性显得尤为必要。
The experimental results of proposed power quality control system in restraining harmonic voltage and of its synchronous operation with a power system are presented.
通过电能质量控制系统与电网间同步运行试验和谐波电压抑制试验，实现了逆变器与电网的同步运行控制以及负载谐波抑制控制。
The cut-off frequency of improved inverter output filter can be set higher to ensure the bandwidth of control system and improve the waveform quality of inverter output voltage.
改进后逆变器输出滤波器的截止频率可以取较高值，保证足够的控制系统带宽，有效提高逆变器输出电压波形质量。
The dynamic voltage regulator (DVR), one of the power quality conditioners, is a type of power electronic devices used in power transmission &. distribution system.
电能质量调节装置动态电压调节器（DVR）就是一种应用于输配电系统的电力电子装置。
Reactive power optimization is very important for ensuring the quality of voltage, security and economics of power system.
电力系统无功优化对保证电压质量及系统安全性和经济性有着重要的意义。
It can improve the reliability and quality of the high voltage DC electrical system of airplane to adopt modular power supplies to construct a secondary distributed power system.
采用模块电源构成飞机高压直流电气系统的二次电源分布式系统，可提高供电可靠性和供电质量。
A kind of design method of low voltage power quality monitor based on real time operation system (RTOS) is introduced in this paper.
介绍了一种基于实时操作系统(RTOS)的低压电能质量监测器的设计方法。
With the load growth of distribution system, reactive demand rises in order to increase power factor, voltage quality and transmission efficiency.
随着配电系统负荷日益增长，无功需求也相应增加，配电线路广泛采用并联电容器来满足无功需求。
Optimizing reactive power and voltage control in power system is an important and efficient method to improve the voltage quality and ensure the voltage stability.
无功电压优化控制是减少电网损耗、保持电压稳定性、提高电力系统安全性和经济性的有效措施。
Optimizing reactive power and voltage control in power system is an important and efficient method to improve the voltage quality and ensure the voltage stability.
无功电压优化控制是减少电网损耗、保持电压稳定性、提高电力系统安全性和经济性的有效措施。
应用推荐