The paper presents the effect neutral wire impedace in the power-supply system of three-phase four-wire system and three-phase load change on potential deviation of neutral point,carries out analysis of the reason of the deviation theoretically.
介绍了三相四线制供电系统中线阻抗及三相负载变化对中性点电位偏移的影响 ,从理论上对偏移产生的原因作了分析 ,运用 ORCAD/ PSPICE 9对三相四线制供电系统中性点电位偏移进行了仿真研究 ,并提出在实际应用中应注意的问
Because the rough estimating method isn t exact, it is possible that three-phase voltage is unbalanced and the neutral point displacement voltage is high.
油田35kV配电系统中性点一般经消弧线圈接地,运行中存在三相电压不平衡、中性点位移电压偏高的现象。
Then a neural point potential balance method based on space-vector switching technology is proposed,in which the revision of the current PWM signal is completed through small voltage vector equivalent switching according to the measurement of voltage and AC current of two capacitors,leading to the neutral point potential balance.
中性点电位平衡问题是三电平逆变器在应用过程中需要考虑的一个重要问题,中性点电位不平衡不仅会增加功率开关器件的电压应力,并且在有源逆变的应用场合会造成逆变失败。
Study on Reason and Modification Technique of Neutral Displacing Voltage of 35kV System in Daqing Oil Field
大庆油田35kV系统中性点位移电压成因及改进技术研究
Laboratory Study of Characteristic Testing for Piezoelectric Ceramic Micropositioning
压电陶瓷微位移器特性测试实验研究
Sensorless BLDC Drive Allowing for Neutral Point Voltage
计及中性点电压的无刷直流电机无位置传感器控制
Improvement of Overvoltage Protection of 110kV Transformer Neutral Point
110kV变压器中性点过电压保护的完善
Research on the Output Characteristic of Piezoelectric Micro-displacement Actuator;
压电陶瓷微位移驱动器输出特性的研究
Measurement and nonlinear correction for micro-displacement of piezoceramic tube
压电陶瓷管的微位移测量与非线性校正
Three Optimizations for the Robust of Cemtral Point Voltage of OTL Electric Circuit;
OTL电路中点电压稳定性三次择优
The potential energy of a unit charge at any point in an electric circuit measured with respect to a specified reference point in the circuit or to ground;voltage.
电势,电位相对于电路中某一特定参照点或地面的属于电路中任何一点的单位电荷势能;电压
Research on neutral-point potential balancing and control method for three-level NPC inverter
三电平中点箝位型逆变器中点电压平衡和控制方法研究
Electromagnetic Emulation and Analysis of the Differential Transformer Displacement Sensor
差动变压器式电磁位移传感器的电磁性能仿真与分析
Appalication of Small Reactor Connected to Neutral of 500kV Transformer
500kV变压器中性点串接小电抗器的应用
A Neutral-point Potential Balancing Algorithm for Three-level Single-phase NPC Converters
中性点箝位型三电平单相逆变器中性点电位平衡控制方法
Study of Transient Voltage Responses at Neutral Point of Transformers with a Surge Incoming from Winding Terminal
变压器首端进波中性点暂态电压响应的研究
Studay Over-Voltage on Neutral Grounding via Small Reactor of High-Voltage Transformers;
采用小电抗接地的高压变压器中性点过电压的研究
"The work done in moving a unit charge from one point to another, as in an electric circuit, is equal to the difference in potential energies at each point. "
将单位电荷从一点移到另一点(如在电路中)所做的功即等于两点之间的位能差。
Research on Neutral Point Floating of Three-level Inverter;
三电平高压变频器电容中点电位平衡问题的研究
Experimental study of the correlation between ICP and shift of cerebral midline in early stage of postdecompressive brain bulk enlargement
减压后脑肿大早期颅内压和脑中线移位相关性的实验研究
Power system neutral1 grounding is usually done by means of transformer and generator neutrals.
电力系统中性点通常通过变压器和发电机的中性点来接地的。
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