信号报警显示部分由零序电压检测、报警、显示等电路构成。
The latter makes use of zero sequence voltage detection, alarm and display circuit.
分析了瞬时电压补偿装置(DVR)产生零序电压及其放大机理。
This paper analyzes the mechanism of zero sequence voltage generating and its magnification by DVR.
并据此对传统发电机基波零序电压型定子接地保护的原理提出了改进意见。
Improvement of traditional protection of generator stator grounding based on 3U 0 is presented.
合理地变更PT零序电压回路接线和正确的操作，对再发生此类事故可减小事故损失。
Reasonable modification to zero-sequence voltage circuit and proper operation can minimize losses caused by faults of this kind, if it happens again.
的零序电压与参考电压以平衡的H-桥助理逆变器中的电容器电压，以确保混合9级别的操作安全性。
The zero-sequence voltage was related to the reference voltage to balance the capacitor voltage in the H-bridge assistant inverter to ensure hybrid 9-level operational security.
讨论了纵联零序方向保护因为零序电压灵敏度不足而失效的各种情况，探讨了采用零序电压补偿措施的必要性。
Different conditions causing the sensitivity deficiency of pilot zero-sequence directional protection are analyzed and the necessity of adopting zero-sequence voltage compensation is discussed.
在非线性电阻消谐方式下，正温度系数(PTC)热敏电阻和三次谐波滤波器可以较好地解决零序电压偏高的问题。
Positive temperature coefficient (PTC) thermistor and triple frequency harmonic filter can reduce zero sequence voltage when a nonlinear resistance is used to prevent ferroresonance.
为此，提出了新的控制策略，该控制策略通过检测并消除指令中的零序分量，以破坏无零序电流回路系统的零序电压正反馈条件，消除DVR注入零序电压的不良影响。
So a new control strategy is proposed to detect and suppress the influence of zero sequence component injected by DVR. Simulation results show that the proposed strategy is co…
这种新方法的基础是零序变压器在三相异步电动机断相时输出一个电压信号。
Use is made of that zero-sequence transformer outputs a voltage signal when phase-failure occurs in three-phase induction motor.
本装置配有过流保护、负序电流保护、零序电路保护、起动时间过长保护、低电压保护。
Over current protection, negative current protection, zero sequence current protection, over time of start protection and low voltage protection is configured in the device.
该文提出一种新的基于负序电流补偿的自适应零序过电压保护原理。
A novel principle of negative-sequence current compensation based adaptive zero-sequence over-voltage protection is therefore proposed.
其基本保护采用零序过电压保护，动作时间采用反时限特性；
The inverse time delay characteristic is adopted by the basic zero-sequence over-voltage protection.
在故障时刻，无论故障相电压的相位处在何种初始状态下，都有零序电流反向的特征。
At the time of failure, no matter what kind of start state of voltage phase, the zero-sequence transient current has the characteristic of inverse phase.
分析表明，即使系统不存在零序回路，DVR都会在补偿控制中向系统注入微小的零序分量，该零序分量会对无零序回路系统侧电压造成不良影响。
It shows that DVR will inject small zero sequence component into the power system during compensation control even if there is no zero sequence circuit. This will influence the voltage on system side.
测量功能：高精度测量电流电压、P、Q、功率因数、频率、零序电流、计算电度；2路脉冲量输入实现外部电度表自动抄表；
Measure function: can measure current, voltage, active power, reactive power, frequency, zero sequence current, electric energy, 2 pulse inputs implement watt-hour meter auto read;
经研究发现，零序变压器输出电压与断相点间电压u _ (A ' A)成正比。
It is found that output voltage of zero-sequence transformer is proportional to voltage UA 'a between phase-failure points.
经研究发现，零序变压器输出电压与断相点间电压u _ (A ' A)成正比。
It is found that output voltage of zero-sequence transformer is proportional to voltage UA 'a between phase-failure points.
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