發(fā)布時(shí)間：2018-05-16 08:12

  本文選題：配電網(wǎng) + 故障定位　； 參考：《湖南工業(yè)大學(xué)》2015年碩士論文

【摘要】：配電網(wǎng)故障定位是配電網(wǎng)研究的重點(diǎn)之一,其準(zhǔn)確性、定位速度關(guān)乎著人民的生產(chǎn)生活,也是供電企業(yè)最為看重的指標(biāo)之一。本文根據(jù)配電網(wǎng)現(xiàn)有的自動(dòng)化程度,將其劃分為配電自動(dòng)化改造完全的網(wǎng)絡(luò)和配電自動(dòng)化改造未完全的網(wǎng)絡(luò),并針對(duì)這兩種配電網(wǎng)絡(luò)的主要故障信息來(lái)源的不同分別深入研究,采取合適的方法來(lái)完成配電網(wǎng)的故障定位。對(duì)于自動(dòng)化改造完全的配電網(wǎng)絡(luò),考慮到在分段開(kāi)關(guān)處裝設(shè)有配電終端設(shè)備(FTU、RTU),能實(shí)時(shí)采集傳輸電量信息,本文采用了一種新的智能算法——擬態(tài)物理學(xué)算法來(lái)對(duì)其進(jìn)行故障定位研究。由于配電網(wǎng)發(fā)生故障后通過(guò)分段開(kāi)關(guān)的電流會(huì)產(chǎn)生較大變化,且可以通過(guò)終端設(shè)備進(jìn)行實(shí)時(shí)檢測(cè),因此本文采用提取上述電流信息的策略,將配電網(wǎng)的故障定位抽象成為一個(gè)二進(jìn)制尋優(yōu)的過(guò)程;利用混沌映射和反向初始化改進(jìn)擬態(tài)物理學(xué)算法,并運(yùn)用改進(jìn)后算法對(duì)配電網(wǎng)進(jìn)行故障定位。從仿真的結(jié)果可知,改進(jìn)的擬態(tài)物理學(xué)算法在尋優(yōu)能力以及收斂精度等方面都得到了一定的改善,將其運(yùn)用到配電網(wǎng)的故障定位上,具有較好的容錯(cuò)性和準(zhǔn)確性。對(duì)于自動(dòng)化改造程度不高的配電網(wǎng)絡(luò),考慮到分段開(kāi)關(guān)處部分裝設(shè)有重合閘動(dòng)作告警信息和故障指示器信息,同時(shí)故障后營(yíng)銷(xiāo)95598系統(tǒng)會(huì)接受到停電用戶的報(bào)修電話,因此本文對(duì)如何融合多源信息進(jìn)行配電網(wǎng)故障定位展開(kāi)研究。主要采用粗糙集理論融合報(bào)修信息以及開(kāi)關(guān)告警信息形成決策表,并對(duì)其約簡(jiǎn)冗余以減小存儲(chǔ)空間,最終實(shí)現(xiàn)配電網(wǎng)故障的快速定位。此外,針對(duì)定位至臺(tái)區(qū)后營(yíng)銷(xiāo)系統(tǒng)裝設(shè)有智能電表的情況,采取召測(cè)智能電表電壓的方案,對(duì)臺(tái)區(qū)的故障進(jìn)一步地精細(xì)化定位。仿真案例表明,提出的的故障定位方案能掃除現(xiàn)有自動(dòng)化程度不高的配電網(wǎng)的故障定位信息盲區(qū),提高定位準(zhǔn)確率,且智能電表的召測(cè)能進(jìn)一步將故障區(qū)段精確到樓棟甚至用戶。最后,本文采用MATLAB/GUI設(shè)計(jì)了一款模擬故障定位軟件,旨在利用和集成上述定位方案,為相關(guān)人員熟悉故障診斷提供更好的借鑒。
[Abstract]:Distribution network fault location is one of the key points in distribution network research. Its accuracy and location speed are related to the production and life of the people, and it is also one of the most important indicators of power supply enterprises. According to the existing automation degree of distribution network, this paper divides the distribution network into complete network of distribution automation transformation and incomplete network of distribution automation transformation, and studies the difference of main fault information sources of these two kinds of distribution network in depth. Adopt appropriate method to complete fault location of distribution network. For the automatic transformation of the complete distribution network, considering that the distribution terminal equipment is installed at the segmented switch, the FTU / RTUU can collect and transmit the electric quantity information in real time. In this paper, a new intelligent algorithm, pseudo physics algorithm, is used to study the fault location. Because the current through the segment switch will change greatly after the fault of the distribution network, and can be detected in real time by the terminal equipment, the strategy of extracting the above current information is adopted in this paper. The fault location of distribution network is abstracted as a binary optimization process, and the improved pseudo-physical algorithm is improved by chaotic mapping and reverse initialization, and the fault location of distribution network is carried out by using the improved algorithm. From the simulation results, we can see that the improved pseudo-physical algorithm has been improved in the aspects of optimization ability and convergence accuracy, and its application to fault location of distribution network has good fault tolerance and accuracy. For the distribution network with low degree of automation, considering that there are reclosure action alarm information and fault indicator information in the section switch, after the failure, the marketing 95598 system will receive the repair telephone from the blackout user. Therefore, how to fuse multi-source information for fault location of distribution network is studied in this paper. The rough set theory is used to combine the repair information and the switch alarm information to form the decision table, and to reduce the redundancy to reduce the storage space, and finally to realize the fast location of the distribution network fault. In addition, in view of the situation that intelligent ammeter is installed in the marketing system after locating to the station area, the scheme of calling intelligent meter voltage is adopted to further refine the fault location of the station area. Simulation cases show that the proposed fault location scheme can eliminate the blind area of fault location information in distribution network with low degree of automation, and improve the accuracy of location. And intelligent meter call can further accurate fault section to buildings and even users. Finally, this paper designs a simulated fault location software using MATLAB/GUI, which aims to use and integrate the above positioning scheme, and provide a better reference for the related personnel familiar with fault diagnosis.
【學(xué)位授予單位】：湖南工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：TM727

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本文編號(hào)：1896113