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含有分布式電源的配電網(wǎng)三相潮流并行計算

發(fā)布時間:2018-04-29 13:53

  本文選題:配電網(wǎng) + 多平衡節(jié)點 ; 參考:《華北電力大學》2014年碩士論文


【摘要】:隨著分布式電源應用的日益推廣,配電網(wǎng)不斷向智能化發(fā)展,配電網(wǎng)的結(jié)構(gòu)日趨復雜,這就要求潮流算法不僅能夠?qū)崿F(xiàn)三相計算,還能處理環(huán)網(wǎng)的情況。由于配電網(wǎng)規(guī)模大、節(jié)點多,在進行全網(wǎng)的潮流計算時計算量相當可觀,為了實現(xiàn)實時潮流計算,需要通過分布式并行計算來提高計算速度和效率。 根據(jù)分布式電源的基本原理和控制特性建立了分布式電源在配網(wǎng)潮流計算中的計算模型,新增PI節(jié)點和PQ(V)節(jié)點,而不再局限于傳統(tǒng)的PQ節(jié)點和PV節(jié)點。為了更好地實現(xiàn)含有分布式電源以及饋線間環(huán)網(wǎng)的配網(wǎng)三相潮流計算,提出了多平衡節(jié)點的思想,改進了傳統(tǒng)的前推回推法,收斂速度快,迭代次數(shù)少,與牛頓拉夫遜法的比較看出,該方法的收斂速度和計算精度完全滿足實際工程的需要。 搭建了分布式并行計算平臺,形成分層加分布的并行計算結(jié)構(gòu);設計了服務實例和管理模塊,實現(xiàn)任務的靈活部署和負載均衡;采用ZeroMQ通信技術(shù)構(gòu)建全局通信架構(gòu),實現(xiàn)端到端的N對N關(guān)系。利用該平臺將復雜的全網(wǎng)潮流計算分解為若干子任務派發(fā)給不同的計算機,使計算速度和效率得到明顯改善,尤其適合大規(guī)模的配電網(wǎng)絡;谠撈脚_的多平衡節(jié)點潮流算法已在實際工程中應用。經(jīng)過算例驗證表明,隨著節(jié)點規(guī)模的增大,該平臺的設計優(yōu)勢越發(fā)明顯,具有高效、實用的特點。
[Abstract]:With the increasing application of distributed generation, the distribution network is developing intelligently, and the structure of distribution network is becoming more and more complex, which requires that the power flow algorithm can not only realize the three-phase calculation, but also deal with the situation of loop network. Due to the large scale of distribution network and the large number of nodes, the calculation of power flow in the whole network is considerable. In order to realize real-time power flow calculation, it is necessary to improve the computing speed and efficiency through distributed parallel computing. According to the basic principle and control characteristics of distributed power supply, the calculation model of distributed power generation in power flow calculation of distribution network is established, adding Pi node and PQV) node, but not limited to traditional PQ node and PV node. In order to better realize the three-phase power flow calculation of distribution network with distributed power supply and feeder loop network, the idea of multi-balanced node is proposed, and the traditional forward push back push method is improved, the convergence speed is fast and the number of iterations is less. Compared with Newton-Raphson method, it is shown that the convergence rate and accuracy of the method can meet the needs of practical engineering. A distributed parallel computing platform is built to form a layered and distributed parallel computing structure. Service instances and management modules are designed to achieve flexible deployment and load balancing of tasks. The global communication architecture is constructed by using ZeroMQ communication technology. The end-to-end N-to-N relationship is realized. By using this platform, the complex whole network power flow calculation is decomposed into several sub-tasks and distributed to different computers, which improves the computing speed and efficiency obviously, and is especially suitable for large-scale distribution networks. The multi-balanced node power flow algorithm based on the platform has been applied in practical engineering. An example shows that with the increase of node size, the design advantage of the platform becomes more and more obvious, and the platform has the characteristics of high efficiency and practicality.
【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】:TM744

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