本文選題：調(diào)度自動化　切入點：EMS系統(tǒng)　出處：《華北電力大學》2014年碩士論文　論文類型：學位論文

【摘要】：電網(wǎng)調(diào)度自動化系統(tǒng)可使調(diào)度人員可以及時的了解到電網(wǎng)的實時運行狀況,監(jiān)視每個變電所的實時負荷,對電網(wǎng)的經(jīng)濟運行以及電網(wǎng)出現(xiàn)故障可以及時地做出相應(yīng)的對策措施,可確保電網(wǎng)的安全、經(jīng)濟、可靠地正常運行,研究電網(wǎng)調(diào)度自動化系統(tǒng)的應(yīng)用具有重要的工程實用價值。 本文根據(jù)電網(wǎng)調(diào)動自動化系統(tǒng)的當前運行管理狀況分析,結(jié)合本地區(qū)電網(wǎng)運行實際情況,主要研究了負荷預測和潮流計算在系統(tǒng)中的應(yīng)用。在負荷預測中,首先對現(xiàn)有的幾種負荷預測方法進行比較分析,然后選擇出適合本地區(qū)的負荷預測方法。首先根據(jù)本地電網(wǎng)的環(huán)境因素,將天氣情況進行量化分類,然后運用線性回歸法勾畫出負荷的大致趨勢和數(shù)量級,最后利用神經(jīng)網(wǎng)絡(luò)法對誤差進行修正,得出結(jié)論。與其它方法相比較,此種方法更加適用于本地區(qū),并且其進行誤差修正后的負荷預測值準確率很高。在潮流計算中,對于高斯-塞德爾法、牛頓-拉夫遜潮流算法、快速解耦算法(PQ分解法)三種常用的潮流計算方法進行了優(yōu)缺點的比較。結(jié)合實際工作經(jīng)驗,將牛頓-拉夫遜潮流算法進行了改進,即首先采用快速解耦算法(P—Q分解法)進行初始迭代,然后再轉(zhuǎn)入牛頓-拉夫遜法求解潮流。而且可根據(jù)需求和電網(wǎng)的結(jié)構(gòu)特征自行決定迭代次數(shù),具有很好的實用價值。
[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.

【學位授予單位】：華北電力大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM734

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本文編號：1647832