文章摘要
引用本文:邹 阳,蔡金锭,甘 露.基于状态空间方程的油纸绝缘系统等效电路参数辨识[J].福州大学学报(自然科学版),2015,43(1):68~74
基于状态空间方程的油纸绝缘系统等效电路参数辨识
Identifying equivalent circuit parameters of oil-paper insulation system based on state-space equation
  
DOI:10.7631/issn.1000-2243.2015.01.0068
中文关键词: 油纸绝缘  回复电压法  等效电路  扩展德拜模型  状态空间方程
英文关键词: oil-paper insulation  return voltage method  equivalent circuit  extended Debye model  state-space equation
基金项目:
作者单位
邹 阳 福州大学电气工程与自动化学院福建 福州 350116 
蔡金锭 福州大学电气工程与自动化学院福建 福州 350116 
甘 露 福州大学电气工程与自动化学院福建 福州 350116 
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中文摘要:
      合理地辨识油纸绝缘系统等效电路的参数是绝缘老化特性分析的基础. 根据回复电压测试原理,提出建立回复电压时域响应的状态空间模型,并利用控制理论中状态空间方程的求解方法结合自适应粒子群算法搜索出最优解,从而得到等效电路的未知参数值. 利用国外学者所提供的一组300MV·A油纸绝缘变压器不同充电时间下的回复电压响应曲线进行辨识,并将辨识结果所对应的回复电压曲线与测量曲线对比,二者重合度高,验证了计算模型及辨识方法的有效性. 同时,分析了模型支路数不同时对辨识结果的影响,初步得出该台变压器选择6条支路辨识拟合效果最佳的结论. 为油纸绝缘系统等值电路参数的辨识提供了一种新思路.
英文摘要:
      The reasonable identification of oil-paper insulation system equivalent circuit parameters is the basis of the characteristic analysis of insulation aging. According to the principle of return voltage measurement,the authors propose to establish the state space model of return voltage response in time domain,and use the method of solving state space equation theory in combination with adaptive particle swarm optimization(PSO) algorithm to search optimal solution,so as to obtain the unknown parameters of the equivalent circuit. The authors use a set of return voltage response curves at different charging time to calculate the parameters,which obtained by measuring a 300MV·A oil-paper insulation transformer. By contrasting the calculated RVM spectrum with the measured one,the results indicate the derived mathematical description is effective. Meanwhile,by analyzing the influence of the number of model branch to identification results,the authors predict the number of 6 is the best fit. This paper provides a new method for calculating the equivalent circuit parameters of oil-paper insulation system.
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