four-wire system

Fault-line Analysis on Three-phase Four-wire System and its Prevention

三相四线制供电线路断线故障的分析及保护措施

In this paper, instantaneous reactive power theory using in three-phase four-wire system was discussed at first.

讨论了在三相四线制系统中瞬时无功功率理论和有源电力滤波器的研究结果.

One-Cycle Control Strategy and Simulation of Dynamic Voltage Regulator for Three-Phase Four-Wire System

三相四线动态电压调节器的单周控制策略与仿真分析

Modified harmonic current detecting method for three-phase four-wire system

改进的三相四线制系统谐波电流检测方法

The DCS power grounding should be: when three-phase and four-wire system is adopted, the neutral wire should be grounded;

而采用单相电源时，若DCS与电力设备为公用接地，则DCS电源零线不接地；

Using high performance DSP processor, the device can calculate and compensate harmonic current rapidly under the condition of three-phase four-wire system.

该装置应用于普遍使用的三相四线制系统，采用新型高速DSP控制芯片，可实时地检测计算负载谐波并加以补偿。

Application of FBD-method to real-time current detection in three-phase four-wire system

FBD法在三相四线制系统电流实时检测中应用

In the mode of three-phase four-wire system electrical power supply, the abnormal electrical power supply will do great harm.

在三相四线制供电方式中，供电异常将产生极大的危害。

This paper is just to discuss distribution circuit of TN-system in the single-phase, including both three-phase four-wire system and three-phase five-wire system. In what situation does dangerous voltage happen with N-wire?

本文讨论TN（接零）系统中，三相四线和三相五线在其末端单相配电系统中，N线在什么条件下会发生危险电压？

The detecting method of harmonics and reactive currents in single-phase is applied in three-phase four-wire system, so harmonic current detection and compensation of each phase can be performed separately but without affected by nonbalanced system.

本文将单相谐波检测算法应用于三相四线制系统中，可以各相分别检测谐波电流，从而进行各相单独动态电流注入补偿，不受系统不平衡的影响。

Due to more and more single phase non-linear loads being put into use, people begin to pay attentions to harmonic problem in three-phase four-wire system.

随着越来越多的非线性负荷投入电网应用，三相四线制配电网系统谐波治理问题开始引起了人们的关注。

Study of Shunt Active Power Filter Realizing Reactive Power and Harmonics Compensation in Three-Phase Four-Wire System

三相四线制无功与谐波全补偿的并联有源电力滤波器的研究

Main Circuit Design of the Active Power Filter for Three-phase Four-wire System

三相四线制有源电力滤波器主电路设计

Due to large number of single phase nonlinear loads being put into use, harmonic problem in three-phase four-wire system has become more and more serious.

随着大量单相非线性负载的使用，三相四线制系统谐波问题越来越严重。由于零序分量的存在，三相四线制系统谐波治理不同于三相三线制系统，很多工作尚处于起步阶段。

A new DSP based hybrid power filter designed under the condition of three-phase four-wire system is presented.

介绍了一种基于DSP的三相四线制系统混合型电力滤波装置。

Harmonic Detection Applied to Active Power Filter in Three-phase Four-wire System

三相四线制系统中有源滤波器的谐波检测方法

The multi-objective control of micro source is studied for three-phase four-wire system.

研究了基于逆变器并网的微电源在三相四线制微电网中的多目标控制问题。

A new one-cycle control scheme of dynamic voltage regulator ( DVR) for three-phase four-wire system is proposed.

提出了一种三相四线系统动态电压调节器（dynamic voltage regulator，DVR）的单周控制模型。

The p-q-r instantaneous power theory is introduced, based on which a direct control strategy of UPQC ( Unified Power Quality Conditioner) is presented and its implementation in non-linear and unbalanced three-phase four-wire system is discussed.

阐述了p-q-r瞬时功率理论的原理，提出了基于该理论的统一电能质量控制器（UPQC）的直接控制策略，探讨了将其用于三相四线非线性及不平衡系统中的实现方法。

Discussion on Non-earthing Neutral Point of Power Line for Low Voltage Three-phase Four-wire System

低压三相四线制中性点不接地之浅见

Optimized Control Study on Three-Phase Four-Wire System Inverter Based on Genetic Algorithm

基于遗传算法的三相四线制逆变器优化控制的研究

Research on Harmonic Current Detection in Three-Phase Four-Wire System Based on Improved p-q-r Method

基于改进p-q-r法的三相四线制系统谐波电流检测方法的研究

Instantaneous Reactive Power and Active Power Filter in Three-phase Four-wire System

三相四线制电路中的瞬时无功功率及有源电力滤波器

Study on series hybrid active power filter in a three-phase four-wire system

三相四线制下串联混合型滤波器的研究

A real-time current detection based on FBD ( Fryze-Buchholz-Dpenbrock) method is pre-sented to detect the harmonic, negative-sequent and zero-sequent currents in three-phase four-wire system, and the essential of the method is the projection transformation of reference voltage.

为了快速、有效地检测出三相四线制电力系统中的谐波、负序和零序电流，提出了一种基于FBD法的电流实时检测方法。

The open-air wires of three-phase four-wire system are extensively used in supply main of 220V& 380V electric network of China.

在我国380/220伏电力网络中，广泛采用三相四线制架空线作为配电干线。

A novel method to cancel the neutral harmonic current in three-phase four-wire system

三相四线制下中线谐波电流治理的新方法

Protection Circuit in Three-phase Four-wire System

三相四线制中线断线保护电路

A nonlinear dynamic model is set up to study the sustainable development and utility of renewable resources in this paper. In this paper, instantaneous reactive power theory using in three-phase four-wire system was discussed at first.

本文运用非线性理论建立了可再生资源二次非线性收获的动力模式。讨论了在三相四线制系统中瞬时无功功率理论和有源电力滤波器的研究结果。

An Analysis of a Neutral Line Break Fault in Three-phase Four-wire System

一起三相四线制配电系统零线断线故障事故分析