摘要
针对已有线路参数在线计算方法的实现方案复杂、计算结果不准确、线路参数计算不完整等问题,提出了一种基于双端同步采样信息的非解耦计算方法。以线路π型集中参数模型为研究对象,获取线路两端电流、电压同步采样信息,通过求解描述线路参数关系的微分方程组,实现线路参数的在线计算。以不对称状态下的三相单回线路和同塔双回线路为例,介绍了基于双端同步采样信息的线路参数非解耦计算过程,PSCAD/EMTDC的算例仿真验证了所提方法的有效性和准确性。
The existing online line parameters calculation methods are complicated to be realized,inaccurate resultsand incomplete line parameters calculation. Thus,a coupling calculation method of transmission parameters based onsynchronous sampling signal at two terminals is proposed in this paper. In this paper the π-type lumped parameters mod-el of transmission line is adopted. Based on differential circuit equations of described relationship of line parameters,voltage and current at two terminals of the transmission line are known,the method to calculate transmission line param-eters are given. An example of single-circuit and double circuit line is given under asymmetry state and the calculatingprocess is presented. Finally,PSCAD simulation results verify the effectiveness and the correctness of the proposed al-gorithm.
出处
《电力系统及其自动化学报》
CSCD
北大核心
2016年第5期23-28,共6页
Proceedings of the CSU-EPSA
基金
国家自然科学基金资助项目(51377100)
山东省自然科学基金资助项目(ZR2013EEM029)
关键词
同步采样信息
线路参数
π型集中参数模型
非解耦算法
在线计算
synchronous sampling signal
line parameter
π-type lumped parameter model
coupling algorithm
online calculation
