模拟量输入合并单元时间性能参数测试系统研究
|
摘要
模拟量输入合并单元是智能变电站中广泛应用的设备,其时间性能是否满足规范要求直接关系到采样数据的同步性,对变电站计量与保护装置正常运行产生影响。目前较少有针对时间性能进行的研究及较为全面的时间性能测试系统。文章根据模拟量输入合并单元检验规范中时间性能的技术要求,分析了时间性能参数的含义及误差来源,提出针对模拟量输入合并单元不同时间性能参数、不同同步方式的测试方法,研制了时间性能参数测试系统,并对测试系统进行了TDC测时、相差测量准确度验证,及测试系统报文解析功能验证。结果表明,系统符合"三分之一准则"下的误差要求,满足时间性能检验需求。
As analog-input merging unit is widely used in intelligent substation,its time performance whether meets the requirements of testing specification is directly related to the synchronization of sampling data,thus may affect the operation of measurement and protection devices in intelligent substation. Nowadays,there are few studies on time performance of analog-input merging unit and few relatively comprehensive testing system. This paper analyzes the meaning of time performance parameters and its error sources according to the requirements for time performance of analog-input merging unit in testing specification,proposes some test methods aiming at different time parameters and different synchronization modes,and develops a testing system for time performance parameters. This paper also verifies the accuracy of time measurement based on TDC,the accuracy of phase-difference measurement and the function of SV message analysis. Results show that testing system is in line with the requirement of"one third rule"and meets the demand of time performance testing.
As analog-input merging unit is widely used in intelligent substation,its time performance whether meets the requirements of testing specification is directly related to the synchronization of sampling data,thus may affect the operation of measurement and protection devices in intelligent substation. Nowadays,there are few studies on time performance of analog-input merging unit and few relatively comprehensive testing system. This paper analyzes the meaning of time performance parameters and its error sources according to the requirements for time performance of analog-input merging unit in testing specification,proposes some test methods aiming at different time parameters and different synchronization modes,and develops a testing system for time performance parameters. This paper also verifies the accuracy of time measurement based on TDC,the accuracy of phase-difference measurement and the function of SV message analysis. Results show that testing system is in line with the requirement of"one third rule"and meets the demand of time performance testing.
引文
[1]王忠东,李红斌,程含渺,等.模拟量输入合并单元计量性能测试研究[J].电网技术,2014,38(12):3522-3527.Wang Zhongdong,Li Hongbin,Cheng Hanmiao,et al.Metering performance test of analog-input merging unit[J].Power System Technology,2014,38(12):3522-3527.
[2]裴茂林,刘强,黄洋界,等.智能化变电站二次侧电能计量系统计量误差分析及现场检测方法[J].电测与仪表,2017,54(16):75-82.Pei Maolin,Liu Qiang,Huang Yangjie,et al.Analysis of metering error and methods for on-site testing of secondary energy metering system in smart substation[J].Electrical Measurement&Instrumentation,2017,54(16):75-82.
[3]刘海涛,黄鸣宇,张永浩,等.智能变电站合并单元性能模糊综合评价模型研究[J].电气应用,2014,33(20):102-106.
[4]Q/GDW 11015-2013,模拟量输入式合并单元检测规范[S].
[5]苟怀强,熊觊新,贾林泉,等.基于改进小波突变点检测的合并单元额定延时测试方法研究[J].陕西电力,2015,43(12):38-42,61.Gou Huaiqiang,Xiong Jixin,Jia Linquan,et al.Research on test method for rated delay of merging unit based on improved wavelet mutation point detection[J].Shanxi Electric Power,2015,43(12):38-42,61.
[6]郝晓光,李铁成,邓善飞,等.基于报文的智能变电站合并单元守时误差测试方法研究[J].电子技术应用,2016,(z1):177-181.
[7]李元安,王磊,尹国慧,等.浅谈智能变电站合并单元时间性能测试问题[J].中外企业家,2016,(8):213.
[8]姜雷,郑玉平,艾淑云,等.基于合并单元装置的高精度时间同步技术方案[J].电力系统自动化,2014,38(14):90-94.Jiang Lei,Zheng Yuping,Ai Shuyun,et al.A highly accurate time synchronization technology scheme based on merging unit[J].Automation of Electric Power Systems,2014,38(14):90-94.
[9]李英明,郑拓夫,周水斌,等.一种智能变电站合并单元关键环节的实现方法[J].电力系统自动化,2013,37(11):93-98.Li Yingming,Zheng Tuofu,Zhou Shuibin,et al.A realization solution of key links for merging unit in smart substation[J].Automation of E-lectric Power Systems,2013,37(11):93-98.
[10]胡浩亮,李前,卢树峰,等.电子式互感器误差的两种校验方法对比[J].高电压技术,2011,37(12):3022-3027.Hu Haoliang,Li Qian,Lu Shufeng,et al.Comparison of two electronic transformer error measuring methods[J].High Voltage Engineering,2011,37(12):3022-3027.
[11]童旭,王珮璐,孙雅平.智能变电站时间同步系统在线监测技术的研究[J].华东电力,2012,40(12):2184-2186.
[12]黄灿,肖驰夫,方毅,等.智能变电站中采样值传输延时的处理[J].电网技术,2011,35(1):5-10.Huang Can,Xiao Chifu,Fang Yi,et al.A method to deal with packet transfer delay of sampled value in smart substation[J].Power System Technology,2011,35(1):5-10.
[13]袁宇波,卜强生,高磊,等.智能变电站数字采样延时特性分析与试验[J].电力系统自动化,2013,37(24):76-80,88.Yuan Yubo,Bu Qiangsheng,Gao Lei,et al.Characteristic analysis and test of digital sampling delay in smart substation[J].Automation of E-lectric Power Systems,2013,37(24):76-80,88.
[14]费业泰.误差理论与数据处理[M].(第4版)北京:机械工业出版社,2000.
[2]裴茂林,刘强,黄洋界,等.智能化变电站二次侧电能计量系统计量误差分析及现场检测方法[J].电测与仪表,2017,54(16):75-82.Pei Maolin,Liu Qiang,Huang Yangjie,et al.Analysis of metering error and methods for on-site testing of secondary energy metering system in smart substation[J].Electrical Measurement&Instrumentation,2017,54(16):75-82.
[3]刘海涛,黄鸣宇,张永浩,等.智能变电站合并单元性能模糊综合评价模型研究[J].电气应用,2014,33(20):102-106.
[4]Q/GDW 11015-2013,模拟量输入式合并单元检测规范[S].
[5]苟怀强,熊觊新,贾林泉,等.基于改进小波突变点检测的合并单元额定延时测试方法研究[J].陕西电力,2015,43(12):38-42,61.Gou Huaiqiang,Xiong Jixin,Jia Linquan,et al.Research on test method for rated delay of merging unit based on improved wavelet mutation point detection[J].Shanxi Electric Power,2015,43(12):38-42,61.
[6]郝晓光,李铁成,邓善飞,等.基于报文的智能变电站合并单元守时误差测试方法研究[J].电子技术应用,2016,(z1):177-181.
[7]李元安,王磊,尹国慧,等.浅谈智能变电站合并单元时间性能测试问题[J].中外企业家,2016,(8):213.
[8]姜雷,郑玉平,艾淑云,等.基于合并单元装置的高精度时间同步技术方案[J].电力系统自动化,2014,38(14):90-94.Jiang Lei,Zheng Yuping,Ai Shuyun,et al.A highly accurate time synchronization technology scheme based on merging unit[J].Automation of Electric Power Systems,2014,38(14):90-94.
[9]李英明,郑拓夫,周水斌,等.一种智能变电站合并单元关键环节的实现方法[J].电力系统自动化,2013,37(11):93-98.Li Yingming,Zheng Tuofu,Zhou Shuibin,et al.A realization solution of key links for merging unit in smart substation[J].Automation of E-lectric Power Systems,2013,37(11):93-98.
[10]胡浩亮,李前,卢树峰,等.电子式互感器误差的两种校验方法对比[J].高电压技术,2011,37(12):3022-3027.Hu Haoliang,Li Qian,Lu Shufeng,et al.Comparison of two electronic transformer error measuring methods[J].High Voltage Engineering,2011,37(12):3022-3027.
[11]童旭,王珮璐,孙雅平.智能变电站时间同步系统在线监测技术的研究[J].华东电力,2012,40(12):2184-2186.
[12]黄灿,肖驰夫,方毅,等.智能变电站中采样值传输延时的处理[J].电网技术,2011,35(1):5-10.Huang Can,Xiao Chifu,Fang Yi,et al.A method to deal with packet transfer delay of sampled value in smart substation[J].Power System Technology,2011,35(1):5-10.
[13]袁宇波,卜强生,高磊,等.智能变电站数字采样延时特性分析与试验[J].电力系统自动化,2013,37(24):76-80,88.Yuan Yubo,Bu Qiangsheng,Gao Lei,et al.Characteristic analysis and test of digital sampling delay in smart substation[J].Automation of E-lectric Power Systems,2013,37(24):76-80,88.
[14]费业泰.误差理论与数据处理[M].(第4版)北京:机械工业出版社,2000.