Firstly, according to the mathematical analysis, the model is established and formulas are deduced to calculate phase angles and line voltages.
首先通过数理分析，建立数学模型，推导公式，计算相位角变化值和线电压值。
The background harmonic voltage is related with not only the power of harmonic sources and variation of power line voltages but also the power system structure and capability.
背景谐波电压不仅与电网中谐波源强弱、网压变化有关，而且与电网容量、结构有关。由于其直接决定电网承受畸变负荷的能力，所以有必要对各种电网的背景谐波状况作全面了解和测量。
This paper presents an intelligence test set built by microcomputer technics to monitor and measure the harmonic and surge voltages in the power network and source, on-line and with a real time.
本文提出利用微机技术构造一种在线实时监视和测量电网、电源客观存在的谐波电压和浪涌电压的智能测试仪。
By using transmission line theory and linear approximation of the circuit, analytical expressions are derived for the ripple due to asymmetry of input voltages and circuit elements.
采用传输线理论，在线性近似条件下推导出起因于输入电压的非对称和电路元器件非对称的纹波的解析表达式。
The influence of switching off branch on system nodal voltages and line loads is analyzed and the concept of security margin and its calculation formula are given.
分析了支路断开对系统节点电压及线路负荷的影响，给出安全裕度概念和计算公式。
Also, to be able to deal with dot-line inversion, this source driver's odd output pins and even output pins respectively output gray scale voltages of differing polarity.
同时，为了能够支持点反转和列反转两种面板驱动方式，本数据驱动电路的奇数和偶数输出管脚分别输出极性不同的灰度电压。
The new line of solenoid valves accepts both ac and DC voltages while improving performance.
电磁阀的新生产线，可同时交流和直流电压，同时提高性能。
The alternate current line side realizes the decoupling control of active power and reactive power through double closed loop and the stability of direct current voltages at the same time.
交流电网侧通过双闭环控制，实现有功功率和无功功率的解耦控制，同时具有稳定直流母线电压的能力。
Voltages, line currents and equipment loadings are more localized.
电压、线路电流和设备负荷则更加地区化。
The hs protector is used for the ac power input circuit of electronic equipment; it protects the equipment from invasion by lightning surges and other abnormal voltages from the power source line.
电源防雷模块应用于电子设备的电源回路中，用于保护电子设备免受电源回路感应的雷电和其它过电压而造成的损坏。
By monitoring accessible node voltages, fault on-line detection is performed based on the proposed fault threshold function and fault criterion.
通过监测可测点工作电压利用所构建的故障阈值函数与故障判据来实现容差电路的故障在线检测。
The dispatcher controls these voltages based on experience, previous operating practices, and off-line load flow studies.
调度人员根据经验、以前的运行实践，以及离线的潮流计算来控制母线电压。 收藏。
Three-phase unbalanced voltages have great effects on the performance of a line-start permanent magnet synchronous motor.
三相电压不对称对永磁同步电动机的性能影响较大。
Transmitting electricity at high voltages reduces the power loss and permits the use of smaller conductors in the transmission line.
高电压输电降低了功率损耗，并许可运用更小的导体传输线。
Transmitting electricity at high voltages reduces the power loss and permits the use of smaller conductors in the transmission line.
高电压输电降低了功率损耗，并许可运用更小的导体传输线。
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