电能质量监测与分析系统的研制
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摘要
随着电力电子技术的发展和电力系统中大量非线性负荷的出现，致使电能质量不断恶化。针对我国当前电力部门的需求和工程实际问题，本课题提出研制一种能够测量和分析管理电能质量指标(电压偏差、频率偏差、谐波、电压波动与闪变、三相不平衡和扰动)的综合监测与分析系统。此系统由终端测量装置、监控中心软件平台两部分组成。
本文设计了基于DSP技术的高速、高精度数据获取及处理系统，利用多通道采样保持和时分转换电路实现数据的同步采集，主、从DSP芯片间通过双口RAM进行信息交换。并且针对电力系统中数据采集和处理的实际特点，应用DSP处理器实现对各类数据的测量和处理，并给出了相应的算法实现。
软件开发采用模块化设计方法，分为界画模块、通讯模块、数据库模块三块。系统利用MS SQL数据库，使得大量电能质量监测数据的分析、存储和管理得到了实现。软件能对电能质量多项指标进行综合统计、图形显示、报表打印等。
本系统能对电能质量的各项指标提供全面、准确的测量记录数据，软件实现了结果展示的多样化和数据库管理等功能。
With the development of power electronic technology and emergency of much non-linear load in power system, the power quality has been more and more deterioration. Aiming at the demand of power department and the practical applications, we put forward a kind of integrated supervisor which can measure and analyze power quality issues (admissible deviation of supply voltage, permissible deviation of frequency, harmonics in public supply network, voltage fluctuation and flicker, admissible three-phase voltage unbalance factor and disturbance). Such system is composed of the measure device on substation terminal and the software platform of the supervisory center.
A high-speed and high-precision distributed data acquisition and processing system is designed based on DSP in this paper. The synchronous data sampling of the supervising system is realized by multi-channel collection retaining and A/D transformation circuit. Data between the master and slave DSPs can be transferred by dual-port RAM. According to the special characters of the electronic power system, the algorithm implementation of digital signal processor is presented.
The software development adopts blocking design method. It includes three blocks: interface block, communication block and database block. It becomes possible that analyze, store and manage a great deal of measure data of power quality by using MS SQL database. This software can synthetically statistics , figure displaying, report print and so on, aim at the many issues of power quality.
The system can provide comprehensive and accurate recording data for all kinds of issues of power quality. Besides, the software realizes various functions, such as various displays of results, database management and so on.
本文设计了基于DSP技术的高速、高精度数据获取及处理系统，利用多通道采样保持和时分转换电路实现数据的同步采集，主、从DSP芯片间通过双口RAM进行信息交换。并且针对电力系统中数据采集和处理的实际特点，应用DSP处理器实现对各类数据的测量和处理，并给出了相应的算法实现。
软件开发采用模块化设计方法，分为界画模块、通讯模块、数据库模块三块。系统利用MS SQL数据库，使得大量电能质量监测数据的分析、存储和管理得到了实现。软件能对电能质量多项指标进行综合统计、图形显示、报表打印等。
本系统能对电能质量的各项指标提供全面、准确的测量记录数据，软件实现了结果展示的多样化和数据库管理等功能。
With the development of power electronic technology and emergency of much non-linear load in power system, the power quality has been more and more deterioration. Aiming at the demand of power department and the practical applications, we put forward a kind of integrated supervisor which can measure and analyze power quality issues (admissible deviation of supply voltage, permissible deviation of frequency, harmonics in public supply network, voltage fluctuation and flicker, admissible three-phase voltage unbalance factor and disturbance). Such system is composed of the measure device on substation terminal and the software platform of the supervisory center.
A high-speed and high-precision distributed data acquisition and processing system is designed based on DSP in this paper. The synchronous data sampling of the supervising system is realized by multi-channel collection retaining and A/D transformation circuit. Data between the master and slave DSPs can be transferred by dual-port RAM. According to the special characters of the electronic power system, the algorithm implementation of digital signal processor is presented.
The software development adopts blocking design method. It includes three blocks: interface block, communication block and database block. It becomes possible that analyze, store and manage a great deal of measure data of power quality by using MS SQL database. This software can synthetically statistics , figure displaying, report print and so on, aim at the many issues of power quality.
The system can provide comprehensive and accurate recording data for all kinds of issues of power quality. Besides, the software realizes various functions, such as various displays of results, database management and so on.
引文
[1] 林海雪．现代电能质量的基本问题．电网技术,2001，25(10)：5-12
[2] 全国电压电流等级和频率标准化技术委员会．电压电流频率和电能质量国家标准应用手册．北京：中国电力出版社,2001．46页
[3] 许暇，王惠仁．电能质量的全过程监测和预防检修．华北电力技术,2000,(2)：1-5
[4] G.T. Heydt. A new method for the calculation of subtransmission and distribution system transients based on the FFT. IEEE Trans. on Power Delivery, 1989,4(3): 1869-1874
[5] G.T. Heydt, P. S. Fjeld, C. C. Liu, D. Pierce, L. Tu, G. Hensley. Applications of the Windowed FFT to Electric Power Quality Assessment. IEEE Trans. on Power Delivery, 1999,14(4): 1411-1416
[6] P.F. Ribeiro. Wavelet Transform: An advanced tool for analyzing non-stationary harmonic distortions in power systems. Bologna:Proceeding of IEEE ICHPS, 1994.365-369
[7] L. Angrisani, P. Daponte, M. D. Apuzzo. Ameasurement method based on the wavelet transform for power quality anaysis. IEEE Trans. on Power Delivery, 1998,13(4): 990-998
[8] G.T. Heydt, A. W. Galli. Transient Power Quality Problems Analyzed Using Wavelets. IEEE Trans. on Power Delivery, 1997,12(2): 908-915
[9] S. Santoso, E. J. Powers, W. M. Grady. Power Quality Disturbance Data Compression Using Wavelet Transform Methods. IEEE Trans. on Power Delivery, 1997,12(3): 1250-1257
[10] E. F. El-Saadany, T. K. Abdel-Galil, M. M. A. Salama. Application of Wavelet Transform for Assessing Power Quality in Medium Voltage Industrial Distribution system. Transmission and Distribution Conference and Exposition, IEEE/PES, 2001, vol. 1:427-432
[11] 林海雪．论电能质量标准．中国电力，1997,30(3)：7-10
[12] 谢小容，韩英铎．电力系统频率测量综述．电力系统自动化，1999,23(3)：54-58
[13] 林海雪．电力系统的三相不平衡．北京：中国电力出版社，1998．28页
[14] 杨桦，任震，唐卓尧．基于小波变换检测谐波的新方法．电力系统自动化，1997,21(10)：39-41
[15] 秦前清，杨宗凯．实用小波分析．西安：电子科技大学出版社，1998．45页
[16] A. M. Gaouda, M. M. A. Salama, M. R. Sultan, A.Y. Chikhani. Power Quality Detection and Classification Using Wavelet-Multiresolution Signal Decomposition. IEEE Trans. On Power Delivery, 1999,14(4): 1469-1476
[17] 黄纯，彭建春，毛戈．电网频率的微机测量新方法．电测与仪表，1998,35(389)：16-17
[18] 刘亚洲，李威，纪延超，柳焯．IEC闪变检测方法的数字化实现．继电器,2000,28(3)：18-21
[19] 周兆经，周文晖，李青．采用小波分解和同步检波的电压闪变信号检测新方法．电力系统及其自动化学报,2001，13(6)：23-27
[20] 赵刚，施围，林海雪．闪变值计算方法的研究．电网技术,2001,25(11)：15-18
[21] 冉启文．小波变换与分数傅里叶变换理论及应用．哈尔滨：哈尔滨工业大学出版社,2001．114页
[22] 姜新华，范征宇．快速小波变换在DSP中的实现方法．数据采集与处理,2000，15(2)：170-175
[23] 程卫国，冯峰，王雪梅，刘艺．MATLAB5.3精要、编程及高级应用，北京：机械工业出版社,2000．258页
[24] Mladen Kezunovic, Yuan Liao. A new method for classification and characterization of voltage sags. Electric Power Systems Research, 2001,58(1): 27-35
[25] 卓放,王跃，何益宏，李红雨，王兆安．全数字化控制实现的三相四线制有源电力滤波器．电工电能新技术,2001,20(3)：1-4
[26] 张雄伟，曹铁勇．DSP芯片原理与开发应用(第二版)．北京：电子工业出版社,2000．103页
[27] J. David. Kruglinski, Scot Wingo, George Shepherd. Visual C++技术内幕(第五版)．北京：北京希望电子出版社,2000．596页
[28] Jeffrey Richter. Windows核心编程(第四版)．北京：机械工业出版社,2000．142页
[29] 杨正宏，郑齐健，郑齐心，郑齐燕．SQL Server 7关系数据库系统管理与开发指南．北京：机械工业出版社,2000．29页
[30] 陈建春．Visual C++开发GIS系统-开发实例剖析．北京：电子工业出版社,2000．267页
[2] 全国电压电流等级和频率标准化技术委员会．电压电流频率和电能质量国家标准应用手册．北京：中国电力出版社,2001．46页
[3] 许暇，王惠仁．电能质量的全过程监测和预防检修．华北电力技术,2000,(2)：1-5
[4] G.T. Heydt. A new method for the calculation of subtransmission and distribution system transients based on the FFT. IEEE Trans. on Power Delivery, 1989,4(3): 1869-1874
[5] G.T. Heydt, P. S. Fjeld, C. C. Liu, D. Pierce, L. Tu, G. Hensley. Applications of the Windowed FFT to Electric Power Quality Assessment. IEEE Trans. on Power Delivery, 1999,14(4): 1411-1416
[6] P.F. Ribeiro. Wavelet Transform: An advanced tool for analyzing non-stationary harmonic distortions in power systems. Bologna:Proceeding of IEEE ICHPS, 1994.365-369
[7] L. Angrisani, P. Daponte, M. D. Apuzzo. Ameasurement method based on the wavelet transform for power quality anaysis. IEEE Trans. on Power Delivery, 1998,13(4): 990-998
[8] G.T. Heydt, A. W. Galli. Transient Power Quality Problems Analyzed Using Wavelets. IEEE Trans. on Power Delivery, 1997,12(2): 908-915
[9] S. Santoso, E. J. Powers, W. M. Grady. Power Quality Disturbance Data Compression Using Wavelet Transform Methods. IEEE Trans. on Power Delivery, 1997,12(3): 1250-1257
[10] E. F. El-Saadany, T. K. Abdel-Galil, M. M. A. Salama. Application of Wavelet Transform for Assessing Power Quality in Medium Voltage Industrial Distribution system. Transmission and Distribution Conference and Exposition, IEEE/PES, 2001, vol. 1:427-432
[11] 林海雪．论电能质量标准．中国电力，1997,30(3)：7-10
[12] 谢小容，韩英铎．电力系统频率测量综述．电力系统自动化，1999,23(3)：54-58
[13] 林海雪．电力系统的三相不平衡．北京：中国电力出版社，1998．28页
[14] 杨桦，任震，唐卓尧．基于小波变换检测谐波的新方法．电力系统自动化，1997,21(10)：39-41
[15] 秦前清，杨宗凯．实用小波分析．西安：电子科技大学出版社，1998．45页
[16] A. M. Gaouda, M. M. A. Salama, M. R. Sultan, A.Y. Chikhani. Power Quality Detection and Classification Using Wavelet-Multiresolution Signal Decomposition. IEEE Trans. On Power Delivery, 1999,14(4): 1469-1476
[17] 黄纯，彭建春，毛戈．电网频率的微机测量新方法．电测与仪表，1998,35(389)：16-17
[18] 刘亚洲，李威，纪延超，柳焯．IEC闪变检测方法的数字化实现．继电器,2000,28(3)：18-21
[19] 周兆经，周文晖，李青．采用小波分解和同步检波的电压闪变信号检测新方法．电力系统及其自动化学报,2001，13(6)：23-27
[20] 赵刚，施围，林海雪．闪变值计算方法的研究．电网技术,2001,25(11)：15-18
[21] 冉启文．小波变换与分数傅里叶变换理论及应用．哈尔滨：哈尔滨工业大学出版社,2001．114页
[22] 姜新华，范征宇．快速小波变换在DSP中的实现方法．数据采集与处理,2000，15(2)：170-175
[23] 程卫国，冯峰，王雪梅，刘艺．MATLAB5.3精要、编程及高级应用，北京：机械工业出版社,2000．258页
[24] Mladen Kezunovic, Yuan Liao. A new method for classification and characterization of voltage sags. Electric Power Systems Research, 2001,58(1): 27-35
[25] 卓放,王跃，何益宏，李红雨，王兆安．全数字化控制实现的三相四线制有源电力滤波器．电工电能新技术,2001,20(3)：1-4
[26] 张雄伟，曹铁勇．DSP芯片原理与开发应用(第二版)．北京：电子工业出版社,2000．103页
[27] J. David. Kruglinski, Scot Wingo, George Shepherd. Visual C++技术内幕(第五版)．北京：北京希望电子出版社,2000．596页
[28] Jeffrey Richter. Windows核心编程(第四版)．北京：机械工业出版社,2000．142页
[29] 杨正宏，郑齐健，郑齐心，郑齐燕．SQL Server 7关系数据库系统管理与开发指南．北京：机械工业出版社,2000．29页
[30] 陈建春．Visual C++开发GIS系统-开发实例剖析．北京：电子工业出版社,2000．267页
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