發(fā)布時間：2018-05-13 01:27

  本文選題：單相故障選線 + 小電流接地系統(tǒng)��； 參考：《遼寧工程技術(shù)大學(xué)》2014年碩士論文

【摘要】：電網(wǎng)漏電保護(hù)是繼電保護(hù)的重要內(nèi)容,特別是小電流接地系統(tǒng)的漏電保護(hù),一直是電力系統(tǒng)研究的重要部分。以往單一的選線方法有一定的局限性和適用性,并且故障選線時沒有用到對選線有利的故障信息,選線的靈敏性及可靠性并不高。本文通過研究分析現(xiàn)有漏電保護(hù)方案,提出了基于模糊理論的多判據(jù)融合選線方法,該方法通過將優(yōu)勢互補(bǔ)的現(xiàn)有方法運(yùn)用模糊數(shù)學(xué)的方法進(jìn)行融合,根據(jù)不同的選線方法利用對選線有利的故障數(shù)據(jù),構(gòu)造一種由多種判據(jù)組成的綜合選線方法。文章在分析了多判據(jù)融合選線方法的理論基礎(chǔ)上,利用MATLAB軟件對相應(yīng)電力系統(tǒng)模型進(jìn)行仿真,通過仿真驗證選線方法是否正確以及可行,并以此理論為基礎(chǔ),設(shè)計了基于TMS320F2812控制器的系統(tǒng)硬件,選擇MAX1308同步采樣芯片保證數(shù)據(jù)采集的同步；本文還對系統(tǒng)的軟件部分做了詳細(xì)敘述。通過在實(shí)驗室條件下搭建的電力系統(tǒng)中進(jìn)行漏電故障選線實(shí)驗來驗證選線方法的正確性及可靠性。
[Abstract]:Power grid leakage protection is an important part of relay protection, especially the leakage protection of small current grounding system, which has been an important part of power system research. The former single route selection method has some limitations and applicability, and the fault information is not used in fault line selection, so the sensitivity and reliability of line selection are not high. By studying and analyzing the existing leakage protection schemes, this paper puts forward a multi-criterion fusion line selection method based on fuzzy theory, which uses the fuzzy mathematics method to fuse the existing methods with complementary advantages. According to different route selection methods, a comprehensive route selection method is constructed based on fault data which is advantageous to line selection. On the basis of analyzing the theory of multi-criterion fusion line selection method, the paper simulates the corresponding power system model by using MATLAB software, and verifies whether the method is correct and feasible, and based on the theory. The hardware of the system based on TMS320F2812 controller is designed and the synchronous sampling chip of MAX1308 is selected to ensure the synchronization of data acquisition. The software part of the system is also described in detail in this paper. In order to verify the correctness and reliability of the line selection method, the leakage fault line selection experiment is carried out in the power system under laboratory conditions.
【學(xué)位授予單位】：遼寧工程技術(shù)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM862

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 董新洲;王s，

本文編號：1881048