直挂式高压配网电能质量一体化治理技术及其应用  

Suspended Integrated Power Quality Compensation Technology in High Voltage Distribution Networks and Its Application

作　　者：张定华[1] 王卫安[1] 刘华东[1] 邱岳烽[1] 

机构地区：[1]南车株洲电力机车研究所有限公司,株洲412001

出　　处：《电工技术学报》2013年第7期243-251,共9页Transactions of China Electrotechnical Society

基　　金：国家科技支撑计划资助(2007BAA12B03)

摘　　要：为了实现高压配网无功、谐波和负序的同时补偿,结合有源和无源的优势,提出一种由廉价大容量TCR型SVC与快响应小容量级联SVG构成的低成本混合动态直接补偿系统。前者对变化缓慢的无功功率和负序电流进行补偿,而后者对前者与负载的补偿后残留的无功功率和谐波进行快速补偿。结合实践经验,对两者的容量分配和有源容量计算进行了推导。为提高整个系统对谐波的抑制效果,提出了基于规则分类和电压波动神经网络预测的SVC和SVG协同控制策略。将该系统投入电弧炉群配网,对比分析投入前后的主要电能质量参数,验证了该方法的可行性和有效性。In order to synchronous compensate the reactive power, harmonics and negative sequence current in high voltage distribution network considering the predominance of active and passive compensators, a low-cost hybrid dynamic suspended compensation system constituted by a large capacity, sixpenny static vat compensator （SVC） based on thyristor controlled reactor （TCR） and a small capacity, quick response chain-link static vat generator （SVG） is proposed. The former is used to compensate slow-change reactive power and negative sequence current, and the latter is used to compensate for the error of SVC and loads, and suppress harmonics synchronously. The capacity allocation and the active capacity calculation are deduced by experiences. For the sake of promoting harmonics suppression, a synergetic control strategy of SVC and SVG is proposed by rules and voltage fluctuate forecast based on artificial neural network. The proposed system is used in arc furnaces, and the effectiveness and feasibility are proved by comparing the dominating power quality parameter data before and after the system put into operation.

关 键 词：配电网 电能质量 一体化 补偿技术 协同控制 混合补偿 静止无功发生器 

分 类 号：TM732[电气工程—电力系统及自动化]