电网谐波综合治理的研究_.doc

摘 要 随着我国经济的发展和科技的进步，电力电子装置的广泛应用已经取代电力变压器成为配电网中污染最严重、数量最大的谐波源。这些电力电子装置都为可变结构非线性电力负荷，工作于非线性状态，在高效利用电能的同时也向电网注入大量的非线性电流，给公共电网的电能质量带来了隐患。 论文首先对谐波产生的主要原因进行了逐项分析，然后就电力电网中谐波的危害表现做了具体描述，最后对谐波的防治和综合治理提出了一些观点和设想，并以江苏索普集团醋酸厂的谐波治理为研究对象，重点放在以变频器为代表的非线性负荷如何有效抗干扰和抑制谐波的产生上，还对高次谐波治理的主要方法从原理到实际应用进行了分析比较。 通过实验分析表明，电网谐波的综合治理对提高电能质量，补偿无功提高功率因素，降低设备故障起到积极作用，节电率达10%～30%，谐波滤除率为70%～80%，同时避免因谐波造成的交流电波形畸变而造成电网计量具不准而被当地供电部门罚款，经济和社会环保效益明显。 关键词 谐波源；非线性负载；谐波电流；电能质量；综合治理 Abstract Along with the progress of the development and science and technology of our country economy, electric power electronics equip of extensively applied have already replaced electric power transformer to become go together with in the charged barbed wire net pollute most seriously, amount the biggest harmonics source. These electric power electronics equip all for the variable structure not line electric power to carry, work in not line the appearance be efficiently making use of electric power of also in the meantime toward the charged barbed wire net infuse into line electric current in great quantities and not, brought the electric power quality of public charged barbed wire net concealed suffer from. Thesis first to harmonics creation of the main reason carried on pursue item analysis, then the harmonic bane performance did a concrete description on the electric power charged barbed wire net, finally to harmonic prevention and cure with comprehensive managed to put forward some standpoints and conceive, and with the harmonics of Suo Pu group acetic acid factory in Jiangsu manage for research object, the point put at with change Pin machine for representative of not the line carry how valid anti- interference with repress a harmonic creation up, also to higherharmonic manage of the main method is from the principle arrive physically applied carried on analysis compare. Pass experiment analytical enunciation, the charged barbed wire net is harmonic comprehensive manage to compensate to raise a power factor without the