本文關(guān)鍵詞： 階段式保護(hù) 定值仿真模型 面向?qū)ο驪etri網(wǎng) 系統(tǒng)開發(fā) 圖形顯示　出處：《華中科技大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：目前，繼電保護(hù)定值是在離線模式下采用方式組合的整定方法計(jì)算得到的。當(dāng)系統(tǒng)出現(xiàn)某些特殊方式時(shí)，離線整定得到的定值可能難以滿足選擇性或靈敏性的要求。因此，需要對(duì)故障情形下保護(hù)的動(dòng)作行為和保護(hù)之間的配合關(guān)系進(jìn)行仿真模擬，以確保定值在各種運(yùn)行方式下的正確性和可靠性。本文對(duì)繼電保護(hù)定值仿真中的理論問題和關(guān)鍵技術(shù)問題進(jìn)行研究，內(nèi)容包括繼電保護(hù)基本原理、定值仿真模型和保護(hù)定值仿真系統(tǒng)實(shí)現(xiàn)。 首先，對(duì)階段式保護(hù)的基本原理進(jìn)行了研究。分析了保護(hù)之間、保護(hù)與重合閘之間的配合關(guān)系，研究了各種類型保護(hù)的動(dòng)作特性，并對(duì)影響保護(hù)定值性能的因素進(jìn)行了探討。 然后，建立了基于面向?qū)ο驪etri網(wǎng)的定值仿真模型。該模型將斷路器及其相關(guān)的保護(hù)、重合閘等封裝為一個(gè)保護(hù)仿真單元，大大的減少了整體模型的復(fù)雜程度；并引入決策控制單元，，使之能夠清晰地展示各種時(shí)間定值的配合情況；定義了對(duì)象間的通信機(jī)制，使得模型能夠描述保護(hù)之間的配合關(guān)系。 最后，在上述理論和模型的基礎(chǔ)上，構(gòu)建了繼電保護(hù)定值仿真系統(tǒng)。詳細(xì)闡述了系統(tǒng)各模塊的具體功能，并對(duì)軟件開發(fā)過程中的關(guān)鍵問題提出了實(shí)際可行的解決方案。以VB. NET為開發(fā)工具完成了定值仿真系統(tǒng)的開發(fā)。該系統(tǒng)具有友好的圖形界面，操作簡(jiǎn)單、方便，并能將仿真結(jié)果以圖形的形式清晰直觀地展示給用戶。仿真實(shí)例表明該系統(tǒng)能很好的完成繼電保護(hù)定值仿真校驗(yàn)功能。
[Abstract]:At present, relay protection setting is calculated by the method of combination of modes in off-line mode. When there are some special ways in the system, the setting obtained by off-line setting may not meet the requirements of selectivity or sensitivity. It is necessary to simulate the protection action behavior and the coordination relationship between the protection and the fault protection. In order to ensure the correctness and reliability of the fixed value in various operation modes, this paper studies the theoretical problems and key technical problems in the simulation of relay protection setting, including the basic principles of relay protection, The simulation model of fixed value and the simulation system of protecting fixed value are realized. Firstly, the basic principle of stage protection is studied, the coordination relationship between protection and reclosing is analyzed, the action characteristics of various types of protection are studied, and the factors that affect the performance of protection setting are discussed. Then, the simulation model based on object-oriented Petri net is established, which encapsulates the circuit breaker and its related protection, reclosing and so on into a protection simulation unit, which greatly reduces the complexity of the whole model. The decision control unit is introduced to show the coordination of different time and value clearly, and the communication mechanism between objects is defined so that the model can describe the relationship between protection and protection. Finally, on the basis of the above theory and model, the simulation system of relay protection setting value is constructed, and the specific functions of each module of the system are described in detail. A practical and feasible solution to the key problems in the process of software development is put forward. Using VB. NET as the development tool, the development of the fixed value simulation system is completed. The system has friendly graphical interface, simple operation and convenient operation. The simulation results can be clearly and intuitively displayed to the user in the form of graphics. The simulation example shows that the system can accomplish the function of relay protection setting simulation and verification well.
【學(xué)位授予單位】：華中科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM77

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