發(fā)布時間：2018-04-18 22:03

  本文選題：110kV謝莊變電站 + 各自投電源��； 參考：《鄭州大學》2015年碩士論文

【摘要】：隨著電網(wǎng)建設(shè)速度的加快,電網(wǎng)中出現(xiàn)了各種電磁環(huán)網(wǎng)問題,電磁環(huán)網(wǎng)問題已經(jīng)逐步威脅到電網(wǎng)的正常運行,為了降低電網(wǎng)運行的風險,電網(wǎng)中逐步施行了解環(huán)策略,解環(huán)之后電網(wǎng)相應(yīng)的供電可靠性會下降,為了避免解環(huán)后帶來的新的問題,有必要考慮在電網(wǎng)中應(yīng)用備自投裝置。在解環(huán)后,電網(wǎng)新的問題就是會引起短路電流升高,除此之外,解環(huán)之后的設(shè)備N-1故障會導(dǎo)致相應(yīng)站點電壓出現(xiàn)穩(wěn)定問題。在備用電源自動投入問題方面,如何對相應(yīng)功能模塊邏輯進行整定以及相關(guān)的配置技術(shù)進行研究,將是一項非常重要的技術(shù),這些對于提高裝置動作的正確性具有十分重要的意義。備自投裝置投入可以大大提供負荷站點的供電可靠性,但是目前面臨的技術(shù)瓶頸是備自投裝置如何投入使用的問題,合理投入使用備自投裝置不僅可以提高供電可靠性,還可以滿足電能質(zhì)量的要求。本文基于上述背景以謝莊110kV變電站為案例開展研究,對謝莊變電站備自投裝置運行現(xiàn)狀以及運行特性展開分析,首先從備自投裝置功能邏輯模塊展開調(diào)研,隨后從繼電保護的角度入手來研究謝莊110kV變電站備自投電源自動投入控制策略。通過分析謝莊110kV站點工程,對之前的備自投系統(tǒng)存在的問題進行分析,包括邏輯方面、保護方面以及出口回路方面等。最后提出了相應(yīng)的改進策略以及運行維護手段。本文的研究對于備自投裝置在110kV變電站中的應(yīng)用提供了一套良好的可供借鑒的工程范例。
[Abstract]:With the acceleration of power grid construction, there are various electromagnetic ring network problems in the power network, which has gradually threatened the normal operation of the grid. In order to reduce the risk of power grid operation, the strategy of understanding loop has been implemented step by step in the power network.In order to avoid the new problems caused by the unwinding, it is necessary to consider the application of stand-by device in the power network.After unwinding, the new problem of power network is to cause the short circuit current to rise. In addition, the N-1 fault of the equipment after unwinding will lead to the stability problem of the corresponding station voltage.How to set up the logic of the corresponding function module and how to study the related configuration technology will be a very important technology in the automatic input problem of the backup power supply.These are very important to improve the correctness of the device action.The power supply reliability of the load station can be greatly provided by the equipment input, but the technical bottleneck is how to put the equipment into use. The reasonable use of the equipment can not only improve the reliability of power supply, but also improve the reliability of power supply.It can also meet the requirements of power quality.Based on the above background, this paper takes Xiezhuang 110kV Substation as a case study, analyzes the operation status and operation characteristics of standby Auto-Input device in Xiezhuang Substation. First of all, the research is carried out from the functional logic module of standby Auto-Input device.From the perspective of relay protection, the automatic switching control strategy of standby power supply in Xiezhuang 110kV substation is studied.By analyzing the 110kV site project in Xiezhuang, this paper analyzes the problems existing in the former standby system, including logic, protection and exit loop, and so on.Finally, the corresponding improvement strategy and operation and maintenance methods are put forward.The research in this paper provides a set of good engineering examples for the application of stand-by device in 110kV substation.
【學位授予單位】：鄭州大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TM63;TM762.1
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本文編號：1770261