基于FPGA的矿井电网电流保护系统研究  

Study on current protection system of mining power network based on FPGA

作　　者：张晓明[1] 公茂法[1] 郗忠梅[2] 庄伟[3] 刘小聪[1] 柴龙庆[1] 杨焱麟[1] 

机构地区：[1]山东科技大学信息与电气工程学院,山东青岛266510 [2]山东农业大学机械与电子工程学院,山东泰安271018 [3]同济大学电子与信息工程学院,上海201804

出　　处：《电力系统保护与控制》2010年第22期200-205,共6页Power System Protection and Control

基　　金：山东科技大学研究生科研创新基金(YCA100354)

摘　　要：针对煤矿井下低压电网常见电流故障的保护问题,采用对称分量法建立对称性短路故障和非对称性短路故障的数学模型。依据该模型,在分析各种电流故障电气特征基础上,分别提出了用于识别异步电机启动电流与三相短路电流的相敏保护方案、用于非对称性故障识别的负序保护方案和用于过载故障识别的过载保护方案,进行了基于FPGA的矿井电网电流保护系统软硬件设计。通过Multisim 10和QuartusⅡ软件仿真验证了保护系统的合理性与可靠性。In order to solve the problem of current protection in low-voltage mining power network, this paper establishes the mathematical model of the symmetrical and unsymmetrical faults using symmetrical component method. Based on the analysis of different current fault＇s features, this paper proposes respectively the scheme of phase-sensitive protection which is used to discriminate the starting current of induction motors and the three-phase short-circuit current and the scheme of negative sequence protection and overload current fault protection. In addition, this paper designs the hardware and software of the current protection system of mining power network based on FPGA. The rationality and reliability of the protection system are verified by Multisim 10 and Quartus II simulation.

关 键 词：FPGA 电流保护 相敏保护 负序保护 鉴相器 矿井电网 

分 类 号：TM774[电气工程—电力系统及自动化]