电网调度自动化系统应用研究

发布时间：2018-03-22 08:15

本文选题：调度自动化　切入点：EMS系统　出处：《华北电力大学》2014年硕士论文　论文类型：学位论文

【摘要】：电网调度自动化系统可使调度人员可以及时的了解到电网的实时运行状况,监视每个变电所的实时负荷,对电网的经济运行以及电网出现故障可以及时地做出相应的对策措施,可确保电网的安全、经济、可靠地正常运行,研究电网调度自动化系统的应用具有重要的工程实用价值。本文根据电网调动自动化系统的当前运行管理状况分析,结合本地区电网运行实际情况,主要研究了负荷预测和潮流计算在系统中的应用。在负荷预测中,首先对现有的几种负荷预测方法进行比较分析,然后选择出适合本地区的负荷预测方法。首先根据本地电网的环境因素,将天气情况进行量化分类,然后运用线性回归法勾画出负荷的大致趋势和数量级,最后利用神经网络法对误差进行修正,得出结论。与其它方法相比较,此种方法更加适用于本地区,并且其进行误差修正后的负荷预测值准确率很高。在潮流计算中,对于高斯-塞德尔法、牛顿-拉夫逊潮流算法、快速解耦算法(PQ分解法)三种常用的潮流计算方法进行了优缺点的比较。结合实际工作经验,将牛顿-拉夫逊潮流算法进行了改进,即首先采用快速解耦算法(P—Q分解法)进行初始迭代,然后再转入牛顿-拉夫逊法求解潮流。而且可根据需求和电网的结构特征自行决定迭代次数,具有很好的实用价值。
[Abstract]:Power grid dispatching automation system can make the dispatching personnel can timely to understand the real-time status of the grid, monitor each substation real-time load, on the economic operation of power network and power grid failure can make timely and appropriate measures, to ensure grid safety, economy, running reliably, has important practical engineering the value of application of dispatching automation system of power grid.
In this paper, according to the power to mobilize the automation system of the operation and management status analysis, combined with the actual situation of power grid operation, mainly studies the load forecasting and power flow calculation is applied in the system. In the load forecasting, firstly, several existing load forecasting methods were compared and analyzed, and then choose suitable prediction methods of local load. According to the local power grid environment, the weather conditions were quantified classification, then regression method lays out the load trend and magnitude of error using linear, finally to the amendment, draw the conclusion. By using the neural network method is compared with other methods, this method is more suitable for the local area, and its error correction the load forecast accuracy rate is very high. In power flow calculation, the Gauss Seidel method, Newton Raphson power flow algorithm, fast decoupled algorithm (PQ method) three Common power flow calculation methods are compared. The advantages and disadvantages of the actual work experience, the Newton Raphson power flow algorithm is improved. Firstly, using fast decoupled algorithm (P - Q decomposition) of the initial iteration, and then transferred to the Newton Raphson method. According to the structural characteristics and the trend of demand and the power to decide the number of iterations, and has good practical value.

【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM734

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