谐波，实际上是指的在配电网络中存在的工频频率的整数倍数的电压、电流对配电网的干扰和破坏。谐波，是一种注入公用电网的“垃圾”，它会 “污染”配电网络。
Harmonics, actually means in the distribution network exist power frequency integer multiple voltages、current on the distribution network interference and sabotage. Harmonics, injected into the Public grid is a kind of " "Rubbish", it will be "contaminated" distribution network.
近年来，随着电子计算机、微处理器、精密医疗仪器以及其它数字化电子设备应用日益普遍，这些电气设备都对电源的电能质量具有很高的要求。遇到高次谐波时，经常会出现程序运行错误、数据错误、时间错误、死机，无故重新启动甚至导致永久性损坏。
In recent years, with the computer、microprocessors、precision medical instruments and other digital electronic devices become increasingly common,these electrical devices are on the power supply with high power quality requirements.Encountered in high-order harmonic, we often appear to run errors、data errors、time errors、crashes, reboot without reason re-start and even lead to permanent damage.
目前，引进国外最新电力电子技术的FLHPD-1000/0.4-3Y谐波保护器,能吸收供电网络中极宽频带频率的谐波干扰（1000Hz~120KHz），将谐波有意识地引入本装置，予以“消除”，从而保护用电器不受谐波的干扰。
Present, the introduction of ameilika power quality management the latest technology SEDHPD1000 harmonic protector,it can absorb the power supply network an extremely broadband frequency harmonic interference (1000Hz ~ 12KHz), the harmonic conscious introduction of the device, to be "eliminate", thereby protecting against harmonic with electrical interference.
根据理论研究表明，电网谐波的定义为“对周期性交流量进行傅立叶级数分解，得到为基波频率整数倍的分量”。理想的供电电源应是单一恒定频率为50Hz的并有额定幅值（如：220V、380V等）的稳定电压、电流，但随着各种新型、高效、多功能用电设备的不断更新，这些非线性电气设备使电网电压、电流波形不同程度的畸变，其畸变表现为在50Hz的电流、电压波形上叠加了若干同样是正弦波形的高频率波形，使得原本是正弦变化的50Hz波形畸变。这使得部分对于电源要求极高的用电器的供电紊乱，信号出错。
According to the theoretical studies have shown that, power harmonics is defined as " cyclical exchange volume fourier series decomposition, receives an integer multiple volume of the fundamental frequency. ". The ideal power supply should be a single constant frequency of 50Hz .rate amplitude(Such as: 220V, 380V, etc.) stabilize the voltage、current, but with a variety of new、 highly efficient、multi-functional electrical equipment, constantly updated, these non-linear electrical equipment to power grid voltage and current waveforms varying degrees of distortion, the performance of its distortion in the 50Hz current, voltage waveform superimposed on same sinusoidal high-frequency waveform, makes the change was originally a 50Hz sine wave distortion. This makes it part of the power requires high power supply with electrical disturbances, signal error.
智能建筑中谐波主要来自于两个方面，一是大量非线性负荷形成的谐波源，例如：计算机系统、开关电源、电子式荧光整流器等导致配电系统的电压、电流发生畸变；二是公用电网本身具有一定的谐波含量和配电变压器作为谐波源产生的谐波，由电网侧传输至配电系统。
Harmonic mainly from two aspects in intelligent buildings,first the formation of a large number of non-linear load harmonic sources, for example: computer systems、switching power supply、electronic fluorescent rectifier,and so on, lead distribution system voltage and current distortion occurs; second, the public grid itself has a certain degree of harmonic content and distribution transformers as harmonic sources generated harmonics, grid side transferred to the distribution system.
FLHPD谐波保护器是一种无源型的并联在用户电路中连续不断地监测该电力系统中电流的状态，同时阻隔并吸收掉电路中的高次谐波，使各类设备本身产生的谐波不干扰其他设备的电力装置。
SEDHPD harmonic protector is an non-source parallel in the user circuit, continuous monitor the current state in power system, at the same time, barrier and absorbed the high-order harmonic in the circuit, to make various equipment themselves harmonics generated by the device do not interfere with other equipment’s electrical installations.百科词典
在消除了谐波的同时，FLHPD谐波保护器还消除了对用电设备极具破坏性的浪涌电压、尖峰信号等杂波，从而使各相电路中的电流、电压趋于平稳，相位差保持一致，充分发挥了各类设备的原始功能，以达到节约电能的目的。由于导体中高频谐波引起的涡流现象，会造成多达20%的能量损失。如果安装了谐波保护器以后，就可以消除涡流。同时，平整电压波形，滤除部分谐波，从而达到节能的目的。
Eliminates harmonics at the same time, SEDHPD1000 harmonic Protector also eliminates the electrical equipment to the devastating surge voltage、clutter spikes signal etc. So that each phase circuit current, voltage stabilized, phase difference consistent, give full play to the various equipment original function，In order to achieve the purpose of saving energy. High-frequency harmonics in conductors caused by vortex phenomenon,will result in up to 20% of the energy loss. If you installed the harmonic protector after, vortex can be eliminated. Meanwhile, Smooth voltage waveform , filter part of the harmonics, so as to achieve energy-saving purposes.
FLHPD谐波保护器主要运用在写字楼、医院中的精密设备、工矿企业中的计算机控制设备，PLC以及其他需要高质量电源的场合。这些用电设备本身的功率并不大，其所产生的谐波量绝对值并不大，但其谐波含量的百分数却较高，这些设备本身对于供电的质量却要求极高，要求电源的电压波形要好，其畸变率要低。在这种场合，是应用本谐波保护器的最佳场合。
SEDHPD harmonic Protector mainly used in the office、hospitals in the precision equipm、industrial and mining enterprises in the computer-controlled equipment，PLC and others need high-quality power supply occasion. These appliances consume own Power are not large, harmonics generated by the amount of it is not much, but the harmonic content is higher, the equipment itself is high quality for power supply, required power supply voltage waveform is better, lower rates of its distortion.In this case, is application of the harmonic protector best occasions.
