【摘要】：隨著智能變電站的大規(guī)模建設(shè)及新技術(shù)的應(yīng)用,現(xiàn)場(chǎng)運(yùn)檢人員對(duì)智能變電站新技術(shù)的掌握應(yīng)用還有待提高,對(duì)基于IEC61850標(biāo)準(zhǔn)下的GOOSE二次回路原理掌握不足�，F(xiàn)階段智能變電站內(nèi)改擴(kuò)建工程眾多,同時(shí)部分早期智能變電站也因設(shè)備質(zhì)量、運(yùn)行年限、設(shè)計(jì)質(zhì)量等原因在逐步進(jìn)行改造,在運(yùn)行變電站進(jìn)行改擴(kuò)建及改造工程,應(yīng)確保運(yùn)行設(shè)備與檢修設(shè)備的良好隔離,而近年來(lái)頻繁出現(xiàn)現(xiàn)場(chǎng)工作中因運(yùn)檢人員操作不當(dāng)引起的保護(hù)誤動(dòng)、拒動(dòng)事故,種種教訓(xùn),引起我們的深思,也促使對(duì)智能變電站二次回路隔離技術(shù)措施進(jìn)行深入研究。本文以江西電網(wǎng)500k V馬回嶺變電站全站105套合并單元、智能終端的更換改造工程為實(shí)例,提出二次回路隔離需求。為更好的理解智能變電站的GOOSE回路相關(guān)原理,首先提出了IEC61850的數(shù)據(jù)信息模型,剖析了GOOSE回路傳輸機(jī)制、GOOSE報(bào)文含義、GOOSE虛端子、GOOSE發(fā)送軟壓板等數(shù)據(jù)模型及原理,在此基礎(chǔ)上分析了不同GOOSE回路隔離技術(shù)措施優(yōu)缺點(diǎn),并對(duì)SV采樣回路的2種隔離措施也進(jìn)行了歸納,得出了智能變電站二次設(shè)備投退原則以及注意事項(xiàng)。最后在500k V馬回嶺變電站改造實(shí)例中,提出了一種智能變電站隔離措施選擇的思路,結(jié)合之前得出的投退原則結(jié)論,明確了具體的安全措施內(nèi)容,同時(shí)通過一系列保障措施,確保了工程順利實(shí)施。本文章的研究成果具有很好的典范作用,為今后各類智能變電站改造工程提供了理論指導(dǎo)及技術(shù)基礎(chǔ)。
[Abstract]:With the large-scale construction of intelligent substation and the application of new technology, the application of new technology in intelligent substation still needs to be improved, and the principle of GOOSE secondary circuit based on IEC61850 standard is not well grasped. At the present stage, there are a lot of intelligent substation reconstruction and extension projects. At the same time, some of the early intelligent substations are undergoing gradual transformation because of the equipment quality, operation life, design quality, etc., and the reconstruction and extension projects are being carried out in the operation substations. It is necessary to ensure a good separation between the operation equipment and the maintenance equipment, and in recent years, there have been frequent accidents of protection misoperation, refusal accidents and various lessons caused by improper operation of the operation and inspection personnel in the field work, which has caused us to ponder deeply. It also promotes the deep research on the secondary circuit isolation technology of intelligent substation. Taking 105 sets of combined units and the replacement of intelligent terminals in the whole station of 500kV Mahui Ling Substation of Jiangxi Power Grid as an example, the requirement of secondary circuit isolation is put forward in this paper. In order to better understand the related principle of GOOSE loop in intelligent substation, the data information model of IEC61850 is put forward, and the data model and principle of GOOSE loop transmission mechanism, GOOSE message meaning, GOOSE virtual terminal, GOOSE sending soft voltage board and so on are analyzed. On this basis, the advantages and disadvantages of different GOOSE circuit isolation techniques are analyzed, and the two isolation measures of SV sampling circuit are also summarized, and the principle of secondary equipment in intelligent substation and the matters needing attention are obtained. Finally, in the example of the transformation of 500kV Mahualing substation, the paper puts forward a way of choosing the isolation measures of intelligent substation. Combined with the conclusion of the principle of switching and retreating before, it clarifies the contents of specific safety measures, and at the same time, through a series of safeguard measures, To ensure the smooth implementation of the project. The research results of this paper have a good exemplary role and provide theoretical guidance and technical basis for all kinds of intelligent substation reconstruction projects in the future.
【學(xué)位授予單位】：華北電力大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TM63;TM76

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本文編號(hào)：2426167