配电网无功补偿和谐波治理研究

发布时间：2019-05-29 05:17

【摘要】：非线性负荷在各级电网中的大量应用，产生了功率因数降低和谐波污染等一系列问题，造成了生产设备使用率降低、线路系统电压差值过大以及产生电能的巨大浪费等后果，对配电系统进行无功功率补偿和谐波治理已成为配电网急需解决的问题。本文以电网无功补偿与谐波治理为分析对象，所做的主要工作和取得的主要成果如下：（1）对系统功率因数降低以及谐波污染等问题的产生原因、危害以及治理原理等进行了分析和探讨,为后续的电网无功补偿和谐波治理研究提供了理论支持；（2）分析并提出了几种电网无功补偿和谐波治理方案，从谐波电流的计算、谐波电流导致的功率损耗的计算等方面对谐波管理进行了分析，通过在电网中合理选用动态消谐无功补偿装置和有源滤波器的方法来实现改善电网电能质量的目的；（3）对海阳地区电网电能质量情况进行了调查研究,将无功补偿与谐波治理的基本理论与工程实践相结合,较为详尽地剖析了区域电网的电能质量情况，，并通过对某公司配电室投放无功补偿和谐波治理装置前后的数据分析比较,验证了该补偿方案对谐波的抑制效果。本文设计的滤波方案已成功投运到该公司配电室，并达到了预期效果，证明该方案具有良好的经济性和可行性。
[Abstract]:A large number of applications of nonlinear loads in power grids at all levels have resulted in a series of problems, such as power factor reduction and harmonic pollution, resulting in the reduction of the utilization rate of production equipment, the excessive voltage difference of the line system and the huge waste of electric energy. Reactive power compensation and harmonic control of distribution system have become an urgent problem to be solved in distribution network. In this paper, reactive power compensation and harmonic control are taken as the analysis object. The main work done and the main achievements are as follows: (1) the causes of the system power factor reduction and harmonic pollution. The harm and treatment principle are analyzed and discussed, which provides theoretical support for the follow-up research of reactive power compensation and harmonic control in power grid. (2) several schemes of reactive power compensation and harmonic control in power grid are analyzed and put forward, and the harmonic management is analyzed from the aspects of harmonic current calculation and power loss calculation caused by harmonic current. Through the reasonable selection of dynamic harmonic elimination reactive power compensation device and active power filter in the power grid to achieve the purpose of improving the power quality of the power grid; (3) the power quality of power grid in Haiyang area is investigated and studied, and the power quality of regional power grid is analyzed in detail by combining the basic theory of reactive power compensation with harmonic control with engineering practice. Through the analysis and comparison of the data before and after putting reactive power compensation and harmonic control device into the distribution room of a company, the suppression effect of the compensation scheme on harmonics is verified. The filtering scheme designed in this paper has been successfully put into operation in the distribution room of the company, and the expected results have been achieved, which proves that the scheme has good economy and feasibility.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM761.12

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