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- IMPROVED FOURIER ALGORITHM FOR CORRECTING POWER SYSTEM FREQUENCY DEVIATION 校正电力系统频率偏移的改进傅立叶算法
- A mismatch in real power results in a frequency deviation. 有功的不平衡将会引起频率的偏移。
- Transmitting frequency deviation of high frequencyE? 高频制频率时的发射频偏?
- system frequency deviation 系统频率偏差
- A developed linear VCXO with wide frequency deviation has acquired better results. 研制的宽频偏线性压控晶体振荡器取得了较好的结果。
- System frequency is held very accurately except during infrequent time when abnormal situations exist. 除了偶尔出现异常情况外,电力系统的频率可以保持非常准确。
- A new scheme to suppress carrier frequency deviation for PCM/FM telemetry digital receiver is presented. 摘要讨论了一种PCM/FM遥测数字接收机的载波频偏抑制方法。
- The analysis on the relationship of the center frequency deviation and the microstrip open-end effect is given. 同时分析了导致这种偏移的原因,并阐述了该方法的理论基础。
- To minimize computer requirements, system frequency response is often compromised. 为了尽量减少计算机的工作量,需要分析系统的频率响应特性。
- System frequency and tie-line flows are system problems and should be considered as priority items by system operators. 系统频率和联络线的潮流是系统问题,系统运行人员须给予优先考虑。
- The elements to be controlled include system frequency, tie line flows, line currents, equipment loading and voltage. 所要控制的要素包括系统频率、联络线潮流、线路电流、设备的负荷和电压。
- The over-current relay works to protect oscillation tubes and rectifier, when the current exceeds its limits. Frequency deviation caused by faulty operation is also prevented. 当电流超过限制值时,过负荷电流继电器自动保护振荡管和整流器,同时可以避免由不当操作所引起的频率漂移。
- In conclusion, the trend of power system frequency measurement is naturally educed. 最后对电力系统频率测量的发展趋势提出看法。
- XU Tai-shan,XUE Yu-sheng.Quantitative assessments of transient frequency deviation acceptability[J].Automation of Electric Power Systems,2002,26 (19):7-10. [7]徐泰山;薛禹胜.;暂态频率偏移可接受性的定量分析[J]
- The kw, voltage and frequency deviation to be measured and recorded when the load is changed in the following order without adjusting the governor control switch and VR notch. 锁定频率调节开关和电压调节开关,按下列顺序调节发电机负荷,测量并记录功率、电压和频率同额定值的偏差值。
- Base on the principle of the parasitic effect and the system function,affects on the system frequency response from the parasitic effect are analyzed. 基于微机械陀螺仪的寄生效应产生原理,借助于陀螺仪的系统函数,分析了寄生效应对系统频率响应的影响。
- In this paper an adaptive method of evaluation on DFT for power system frequency is adopted through comparing with other methods. 在频率测量方法的选择上,本文通过比较采用了基于离散傅立叶变换的自适应估计算法。
- We get the relations of system frequency, load resistance and electromechanical coupling coefficient to the conversion efficiency of piezoelectric transducer. 经过分析讨论后,得到了压电发电系统的工作频率、负载电阻和机电耦合系数与压电换能器能量转换效率的关系。
- The sampling frequency of PMU is constant because of the synchronization of its phasor measuring.As system frequency changes, the error of measuring phasor is avoidless. 由于相量测量装置(PMU)对相量测量同步性的要求,其采样频率应保持为常数,当系统频率变化时,相量的计算会出现误差。
- The main contents of power energy include frequency deviation, voltage deviation, voltage fluctuation and flicker, voltage unbalance, temporary or transient over-voltage, wave distortion, voltage dips and interruption, power supply reliability and so on. 电能质量的内容包括频率偏差、电压偏差、电压波动与闪变、三相不平衡、暂时或瞬时过电压、波形畸变、电压暂降与短时中断以及供电连续性等。