本文選題：變電站　切入點：繼電保護　出處：《杭州電子科技大學》2017年碩士論文　論文類型：學位論文

【摘要】：隨著我國經(jīng)濟建設(shè)步伐的加快,電網(wǎng)的規(guī)模也在成倍的增加。電網(wǎng)規(guī)模的快速增加必然帶來電網(wǎng)運行方式的頻繁調(diào)整,繼電保護裝置操作工作量迅速增加。在這種形勢下,傳統(tǒng)的對繼電保護裝置的就地停電操作模式顯然必須由一種更先進,更智能的方式取代,才能適應(yīng)智能電網(wǎng)以及數(shù)字化變電站建設(shè)的發(fā)展。面對繼電保護就地操作工作的巨大壓力,繼電保護的遠方操作控制成了必然發(fā)展的趨勢。這將大大降低變電站操作人員的工作壓力,提高變電站運行效率和自動化水平。但是繼電保護一旦實現(xiàn)遠方操作,勢必造成繼電保護裝置中重要信息全部暴露于通信網(wǎng)絡(luò)。同時,近幾年因網(wǎng)絡(luò)攻擊導致的電網(wǎng)事故頻繁發(fā)生,因此受到信息安全的忌憚,繼電保護遠方操作尚未能大面積推廣。面對以上迫切需要解決的工程問題,本文首先對繼電保護遠方操作的內(nèi)容進行了描述,對實現(xiàn)繼電保護遠方操作所面臨的網(wǎng)絡(luò)安全問題,進行了詳細的分析,并提出相應(yīng)的防護策略。然后把變電站內(nèi)外發(fā)起的涉及繼電保護裝置運行變更及維護的所有操作統(tǒng)一納入嚴格的閉環(huán)業(yè)務(wù)管控。并提出了調(diào)控中心統(tǒng)一簽發(fā)遠方操作操作票,變電站繼電保護操作信安模塊(SOMR)惟一執(zhí)行的閉環(huán)監(jiān)管機制,對操作票下達的流程,以及遠方操作繼電保護在線管控的流程進行了詳細的設(shè)計。同時為了防止變電站過程層原始數(shù)據(jù)遭受破壞,提出了現(xiàn)條件下變電站過程層與SMV原始報文安全傳輸?shù)木W(wǎng)絡(luò)攻擊檢測與取證策略;并在變電站建立就地SMV網(wǎng)絡(luò)攻擊檢測取證模塊(SVDE),并結(jié)合工程實際設(shè)計了多重檢測算法,最后利用OPENT網(wǎng)絡(luò)仿真軟件對SVDE模塊傳輸?shù)膶崟r性進行了仿真驗證。本文針對數(shù)字化變電站繼電保護以及遠方操作的信息安全及防護研究,對未來繼電保護遠方操作的實現(xiàn)以及數(shù)字化變電站的建設(shè)有一定的意義和價值。
[Abstract]:With the acceleration of economic construction in our country, the scale of power grid is increasing exponentially. The rapid increase of power grid scale will inevitably bring about frequent adjustment of power grid operation mode, and the operation workload of relay protection device will increase rapidly. The traditional operation mode of local blackouts for relay protection devices must obviously be replaced by a more advanced and intelligent way. In order to adapt to the development of smart grid and digital substation construction. Remote operation control of relay protection has become an inevitable development trend. This will greatly reduce the working pressure of substation operators and improve substation operation efficiency and automation level. It is bound to cause all important information in the relay protection device to be exposed to the communication network. At the same time, in recent years, the power network accidents caused by the network attacks have occurred frequently, so they are feared by the information security. The remote operation of relay protection has not been widely popularized. In the face of the above urgent engineering problems, this paper first describes the content of remote operation of relay protection, and discusses the network safety problems in realizing remote operation of relay protection. A detailed analysis was carried out. Then, all operations initiated inside and outside the substation involving the operation change and maintenance of relay protection device are brought into strict closed-loop business control, and the control center issues the remote operation ticket uniformly. The only closed-loop supervision mechanism implemented by the substation relay protection operation letter and security module, the process of issuing the operation order, And the remote operation relay protection online control process is designed in detail. Meanwhile, in order to prevent the original data of the process layer of the substation from being destroyed, This paper puts forward the network attack detection and forensics strategy for the process layer of substation and the secure transmission of the original SMV message under the present condition, and establishes the local SMV network attack detection and evidence collection module in the substation, and designs the multiple detection algorithm combined with the engineering practice. Finally, OPENT network simulation software is used to simulate the real-time transmission of SVDE module. This paper studies the information security and protection of digital substation relay protection and remote operation. It has certain significance and value for the future remote operation of relay protection and the construction of digital substation.
【學位授予單位】：杭州電子科技大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TP309;TM63;TM77

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