模拟量输入直流合并单元延时特性研究  被引量:3

Study on the delay characteristics of the analog-input DC merging unit

在线阅读下载全文

作  者:熊前柱 李登云 聂琪 雷民 吴元相 刘开培[2] 秦亮[2] XIONG Qianzhu;LI Dengyun;NIE Qi;LEI Min;WU Yuanxiang;LIU Kaipei;QIN Liang(China Electric Power Research Institute Co.,Ltd.,Wuhan 430074,China;School of Electrical Engineering and Automation,Wuhan University,Wuhan 430072,China)

机构地区:[1]中国电力科学研究院有限公司,湖北武汉430074 [2]武汉大学电气与自动化学院,湖北武汉430072

出  处:《电力科学与技术学报》2021年第6期3-10,共8页Journal of Electric Power Science And Technology

基  金:国家电网有限公司科技项目(JL71-17-005)。

摘  要:广泛应用于高压直流输电系统的模拟量输入直流合并单元的延时对直流计量精度、控制稳定性和保护速动性有重要影响。为保证模拟量输入直流合并单元的整体延时满足延时要求,需合理配置硬件和软件延时,并对系统整体延时进行测试。该文分析一种典型的模拟量输入直流合并单元的延时特性,并对各环节延时进行具体分析,测试发现,信号调理与滤波、A/D转换等硬件环节延时相对稳定,在总延时中比重较大;CPU软件环节的具体延时与实际采用的算法、被测参数状态引起的软件执行路径有关,具有一定的随机性。实验测得的延时结果与理论分析基本吻合,可为模拟量输入直流合并单元的设计制造和延时校正提供参考和指导。The delay of analog-input DC merging unit is widely used in HVDC system,and it has an important influence on the DC metering accuracy,control stability and protection rapidity.In order to ensure that the overall delay of analog-input DC merging unit meets the delay requirements,the hardware delay and software delay should be configured reasonably,and the overall delay of the system should be tested.This paper analyzes the delay characteristics of a typical analog input DC combining unit,and analyzes the delay of each link respectively.It is found that the delay of signal conditioning and filtering,A/D conversion and other hardware links are relatively stable,and plays a large proportion of total delay.The specific delay of CPU software link is related to the algorithm actually used and the software execution path caused by the measured parameter state Certain randomness.The experimental results are in good agreement with the theoretical analysis.This paper provides the reference and guidance for the design,manufacture and delay correction of analog-input DC merging unit.

关 键 词:模拟量输入直流合并单元 延时特性 硬件环节 软件环节 

分 类 号:TM93[电气工程—电力电子与电力传动]

 

参考文献:

正在载入数据...

 

二级参考文献:

正在载入数据...

 

耦合文献:

正在载入数据...

 

引证文献:

正在载入数据...

 

二级引证文献:

正在载入数据...

 

同被引文献:

正在载入数据...

 

相关期刊文献:

正在载入数据...

相关的主题
相关的作者对象
相关的机构对象