本文主要讨论分析了基于DSP的配电网参数采集和处理的系统的实现方案，同

本文主要讨论分析了基于DSP的配电网参数采集和处理的系统的实现方案，同时也对相关的背景知识进行了介绍。通过对DSP、FFT算法以及配电网参数的计算方法的相关知识的学习，从系统设计的的要求出发，完成了对硬件电路的设计和实现以及软件编程的实现。通过硬件和软件的调试，最终完成了整个设计从分析、设计到实现的全过程。在几个月的毕业设计研究阶段中，我完成了相关资料的查阅、各种方案的比较和论证，硬件电路和软件程序的设计和功能测试工作，达到了本毕业设计的设计要求。总结这次毕业设计，主要做了以下四个方面的工作：
（1）在分析了各项配电网参数的基础上，选择了通过谐波分析法来计算配电网的参数。之后详细的研究并实现了FFT算法的谐波分析方法以及各项参数的计算方法，为配电网参数的计算提供了强有力的理论支持。
（2）建立了以TI公司 的 为基础的硬件平台系统，充分发挥了 在数据处理方面的的优势，使DSP不仅完成了数据的现场采集功能，并快速的进行了谐波分析和配电网各项参数的计算，完成了实时监测的要求。这种硬件结构不但可以满足高精度的要求，同时也是一种低成本的硬件配置方案。
（3）设计并完成了整个DSP的软件模块代码的编写，系统的分析了DSP对数据的采样、处理等单元的控制。DSP通过定时器控制实现了对A/D采样的控制，并通过编写FFT算法程序、数据处理程序，完成了对配电网各项参数的计算。
（4）综合了软件设计和硬件设计的方案，完成了一套配电网参数采集和处理系统的设计，通过了硬件模块和软件模块的仿真和调试，验证了本系统解决问题的正确性。同时，在实验室现有的条件下，进行了系统的整体上电调试，实验结果表明了本设计完全能够完成对基本的配电网参数的监测要求。
由于时间有限，在本系统设计和制作的过程中发现了一些问题未能进行进一步完善，存在的问题主要由以下几个方面：
（1）由于本设计主要注重对配电网参数的采集和处理，对参数的显示功能没有关注，因此本设计无法将配电网参数在屏幕上进行显示，而只能通过访问数据存储地址来读取参数值，这就相当程度上限制了对配电网参数的实时监测，可在此设计的基础上在增加一个数据显示程序，以使配电网参数的实时监测效果更好。
（2）本设计没有外接数据存储器，因此无法存储过多的配电网参数数据。本设计对各项参数的数据是循环保存的，最大保存数据为五个，之后将循环保存。为了保存更多的历史数据以供研究人员查阅和研究，可将 外接一数据存储器，将参数数据以五个为一组保存到外部存储器中。
（3）由于DSP只有一个采样保持器，每次只能采集一路数据，不能同时采集多路数据而只能分时采集，这会一定程度上对采集数据的精度产生影响。为了能实现对多路数据的实时采集，可利用一外置的A/D采样芯片，对多路数据进行实时采集，然后读入DSP中进行处理。
（4）本系统采用定时器中断，默认了配电网电压频率为50HZ来计算的定时间隔，但事实上电压频率并不是一成不变的，这也将影响到最终数据的精度。为解决这一问题，可设置一测频单元，对频率进行实时监测，然后改变定时器定时周期，来获得更加准确的数据。
如果从上述几个方面对系统进行改进，那系统的的功能将会更加完善，智能化将大大提高，更有利于实际生活中使用。

結果 (英文) 1:

This article focuses on analysis of distribution network based on DSP data acquisition and processing scheme of the system, but also introduces the relevant background knowledge. Through the DSP, FFT algorithm and parameter calculation method for distribution network of knowledge learning, system design requirements, completed the design and implementation of hardware and software implementations. Hardware and software debugging, finally completed the entire design from the analysis, design and implementation process. Graduated a few months in the design development phase, I have complete access to relevant information, comparison of various programmes and feasibility studies, design and functional testing of hardware and software, and reaches the graduation project design requirements. Summing up the graduation design, mainly the following four aspects:(1) based on analysis of the parameter of the distribution network was selected by harmonic analysis method to calculate the parameters of the distribution network. After detailed study and implement the FFT algorithm for harmonic analysis and calculation method for the parameters, parameter calculation for distribution network provides a strong theoretical support.(2) set up a hardware platform based on TI's system, give full play to the advantage in data processing, DSP not only completed the data collection function, and quickly makes a harmonic analysis and the calculation of the parameters of the distribution network, completed the requirements for real-time monitoring. This hardware can not only meet the requirements of high precision, but it is also a low cost hardware solutions.(3) design and completes the preparation of DSP software modules code, system analysis of DSP data sampling, processing units, such as the control. DSP by a timer control to achieve control of the a/d sampling and preparation of FFT algorithms, data processing program, complete the calculation of the parameters of the distribution network.(4) integrated software and hardware design of programmes, completed the design of a data acquisition and processing system for distribution network, through simulation and debugging of hardware and software modules to verify the correctness of the solution of the system. Also, under the existing conditions in the laboratory, for the system as a whole, debugging, experimental results show that this design is able to complete the basic monitoring requirements of distribution parameter.Due to time constraints, the system design and found some problems in the production process could not be further improved, the problem consists of the following aspects:(1) due to this design main focused on on distribution grid parameter of collection and processing, on parameter of displayed function no concern, so this design cannot will distribution network parameter in screen Shang for displayed, and only through access data storage address to read parameter value, this on quite degree Shang limit has on distribution grid parameter of real-time monitoring, can this design of based Shang in increased a data displayed program, to makes distribution grid parameter of real-time monitoring effect better.(2) the design of no external data memory, therefore unable to store too much distribution network parameter data. The design of the parameters of the data was saved by recycling, save data to a maximum of five, then to save the cycle. In order to preserve more historical data for research officers and research, external data memory parameter data saved in the external storage in groups of five.(3) because only one sample holder DSP, only collecting data all the way, cannot collect multiple data and only time gathering, which will have an impact on the accuracy of collected data to a certain extent. In order to achieve multi-channel real-time data acquisition, can use an external a/d sampling chip, multi-channel real-time data acquisition, and then read into the DSP for processing.(4) this system uses the timer interrupt, 50HZ is the default distribution network voltage and frequency to calculate the time interval, but frequency is not set in stone, it will also affect the accuracy of final data. To resolve this problem, you can set a frequency measurement unit, real time monitoring of the frequency, and then change the timer clock cycle to get more accurate data.If these aspects to improve the system, that system functionality will be even more perfect, intelligent will greatly improve, more conducive to real life use.

結果 (英文) 3:

This paper mainly discusses the implementation of the system based on DSP for distribution network parameters acquisition and processing, and also introduces the relevant background knowledge.. Through learning the knowledge of DSP, FFT algorithm and parameters of distribution network calculation method, from the system design requirements of completed the hardware circuit design and implementation as well as the realization of software programming. Through the debugging of hardware and software, the whole design is finished from the analysis and design to the whole process.. During the graduation design research phase of a few months, I have completed the comparison and demonstration of the relevant information and the comparison and demonstration of various solutions.,The hardware circuit and the software program design and function test work, achieved the design request of this graduation design. Summary the graduation design, mainly in the following four aspects:
(1) on the analysis of the parameters of the distribution network based on, through harmonic analysis method to calculate the parameters of the distribution network. After that, the harmonic analysis method and the calculation method of the FFT algorithm are realized, which provide a powerful theoretical support for the calculation of the distribution network parameters..
(2) the hardware platform system based on TI is built, and the advantage of the data processing is fully played.,DSP not only completed the data acquisition function, and the calculation of the harmonic analysis and the parameters of the distribution network, the real-time monitoring of the requirements. This hardware structure can not only meet the requirements of high accuracy, but also a low-cost hardware configuration scheme.
(3) design and complete the entire DSP software module code written, the system analysis of the DSP data sampling, processing and other unit control. DSP through the timer control to achieve the A/D sampling control, and through the preparation of FFT algorithm program, data processing procedures, the calculation of the distribution network parameters.
(4) the software design and hardware design scheme, completed the design of a distribution network data acquisition and processing system, through the simulation and debugging of hardware module and software module, to verify the correctness of the system to solve the problem. At the same time, in the laboratory, the whole power is debugged, the experimental results show that the design can complete the basic monitoring requirements of the distribution network parameters.. Due to the limited time, some problems in the process of design and production of the system have been found to be further improved, and the main problems are as follows:
(1) due to the design mainly focus on the acquisition and the processing of the parameters of the distribution network, the parameter display function does not concern, so this design cannot be the display of the parameters of the distribution network on the screen, but only through access to a data memory address to read the parameter values, which to a considerable extent, limits the real-time monitoring of the parameters of the distribution network, based on this design in a data display program, in order to make the parameters of the distribution network real-time monitoring effect is better.
(2) this design has no external data memory, so it can't store the parameters of the distribution network.. The design of the parameters of the data is stored in the loop,The maximum saved data is five, and then the circulation is saved.. To save more historical data for researchers to access and study, the external data memory is available, and the parameter data is saved to an external memory for five.
(3) due to the DSP only a sampling holder, each only acquisition data, not simultaneous acquisition of multi-channel data and can only be collected, which will affect the precision of the data acquisition in a certain extent. In order to achieve real-time acquisition of multi-channel data, an external A/D sampling chip can be used to collect multi-channel data, and then read into DSP for processing.
(4) the system using the timer interrupt, default, the distribution network voltage and frequency is 50Hz to calculate the timing interval, but in fact voltage frequency is not immutable, which will also affect the accuracy of the final data. In order to solve this problem, a frequency measurement unit can be set up to monitor the frequency, and then change the timer period to get more accurate data.. If from the above aspects of the system to improve the function of the system will be more perfect, intelligent will greatly improve, more conducive to real life use.