毕业论文--电网谐波综合治理的研究

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1、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

2、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AbstractAlongwiththeprogressofthedevelopmentandscienceandtechnologyofourcountryeconomy,electricpowerelectronicsequipofextensivelyapplie

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