比例谐振控制的配电网有源全补偿消弧方法  

Active full compensation arc suppression method for distribution network based on proportional resonant control

作　　者：滑军杰 邵文权[1] 程远[1] 李宁[2] HUA Junjie;SHAO Wenquan;CHENG Yuan;LI Ning(School of Electronics and Information,Xi’an Polytechnic University,Xi’an 710048,China;Faculty of Automation and Information Engineering,Xi’an University of Technology,Xi’an 710048,China)

机构地区：[1]西安工程大学电子信息学院,陕西西安710048 [2]西安理工大学自动化与信息工程学院,陕西西安710048

出　　处：《西安工程大学学报》2020年第2期79-84,共6页Journal of Xi’an Polytechnic University

基　　金：陕西省重点研发计划项目(2020GY-167);西安市科技计划项目(2019217114GXRC007CG008-GXYD7.4)。

摘　　要：针对配电网谐振接地系统单相接地故障时存在较大残流导致难以可靠熄弧的问题,提出基于比例谐振(proportional resonant,PR)控制的配电网接地故障有源消弧方案。从控制策略的跟踪精准度方面,对PR控制及普遍采用的传统PI控制、前馈PI控制策略进行对比分析,发现传统PI、前馈PI控制跟踪正弦信号仍存在较大稳态误差,而PR控制下稳态误差近乎为零。Matlab建模仿真结果表明:有源消弧系统采用PR控制策略能进一步提升残流的补偿精度,从而实现可靠熄弧。Aiming at the problem of large residual current in single-phase grounding fault of resonant grounding system of distribution network,an active arc extinction scheme based on proportional resonant controller is proposed.From the perspective of tracking accuracy of the control strategy,this paper makes a comparative analysis of PR control and the generally adopted traditional PI control and feedforward PI control strategy,it is found that the traditional PI and feedforward PI control strategies have large steady-state errors in tracking sinusoidal signals,while the steady-state error under PR control is almost zero.Matlab is used for modeling and simulation,the results show that the PR control strategy can improve the compensation accuracy of residual current and realize reliable arc quenching.

关 键 词：配电网 单相接地故障 有源消弧 比例谐振控制 

分 类 号：TM774[电气工程—电力系统及自动化]