【摘要】：礦井供電網(wǎng)絡(luò)是一個煤礦安全高效生產(chǎn)的動力來源。煤礦的智能化、自動化程度正在不斷地發(fā)展和提高，與此同時，這就對礦井的供電系統(tǒng)的安全性、可靠性、連續(xù)性提出了越來越嚴格的要求。目前，以微處理器為核心的微機監(jiān)測與保護系統(tǒng)已經(jīng)廣泛深入到礦井供配電網(wǎng)的領(lǐng)域，形成高低壓配電監(jiān)測子系統(tǒng)。但是這些子系統(tǒng)之間是相互獨立的，監(jiān)控信息也不能共享，，造成煤礦供電系統(tǒng)的運行狀態(tài)仍停留在依靠報表逐級上報的被動局面，無法實現(xiàn)電網(wǎng)運行方式改變時供電安全保障。另外，煤礦井下的高壓供電系統(tǒng)是由多段短電纜組成的單電源逐級控制干線式縱向供電網(wǎng)絡(luò)。級與級之間的電流速斷保護動作值按照常規(guī)方法整定計算，保護裝置經(jīng)常發(fā)生越級跳閘現(xiàn)象。 本課題研制一套礦井電網(wǎng)安全監(jiān)控網(wǎng)絡(luò)化系統(tǒng)，擬應(yīng)用礦井配電網(wǎng)開關(guān)設(shè)備微機保護技術(shù)、配電網(wǎng)運算CAD及網(wǎng)絡(luò)技術(shù)對礦井高、低壓電網(wǎng)安全監(jiān)測設(shè)備及子系統(tǒng)的網(wǎng)絡(luò)化，使各饋電IED及進線IED進行多級通信和信息共享，為構(gòu)建基于人工智能的煤礦井下供電網(wǎng)絡(luò)的安全保護、監(jiān)控與預(yù)警系統(tǒng)做有益的探索，形成煤礦供電網(wǎng)絡(luò)安全保障體系。本系統(tǒng)中，在井下各采區(qū)變電所均裝設(shè)MCGSTPC7062K嵌入版觸摸屏，各高壓開關(guān)柜裝設(shè)SNP-2611礦用監(jiān)控保護裝置。監(jiān)控保護裝置實時采集各開關(guān)柜的運行狀態(tài)信息，通過485通信傳送至TPC7062K，并對電力參數(shù)進行顯示。TPC7062K嵌入版觸摸屏控制分站通過以太環(huán)網(wǎng)將井下信息上傳至地面監(jiān)控主機。 該課題的實施為消除礦井高壓電網(wǎng)長期存在的因短路故障而引起越級跳閘的安全隱患提供了技術(shù)支持。所以該課題的研究對煤礦的安全高效生產(chǎn)有很大的實用價值和重要意義。
[Abstract]:Mine power supply network is a safe and efficient power source for coal mine production. The intelligent and automatic degree of coal mine is developing and improving continuously. At the same time, the security, reliability and continuity of mine power supply system are required more and more strictly. At present, the microcomputer monitoring and protection system with microprocessor as the core has been widely used in the field of mine power supply and distribution network to form a high and low voltage distribution monitoring subsystem. However, these subsystems are independent of each other, monitoring information can not be shared, resulting in the operation of the coal mine power supply system is still in the passive situation of relying on reports to report one by one, and the power supply security can not be guaranteed when the operation mode of the power grid is changed. In addition, the underground high-voltage power supply system is a multi-segment short cable composed of a single power supply step by step control trunk type longitudinal power supply network. The action value of the current quick-break protection between the stages is calculated according to the conventional method, and the overstep tripping phenomenon often occurs in the protection device. In this paper, a set of mine power network safety monitoring network system is developed. It is intended to apply microcomputer protection technology of mine distribution network switchgear, distribution network operation CAD and network technology to network the safety monitoring equipment and subsystem of mine high and low voltage power network. The feed IED and incoming IED are used for multi-level communication and information sharing. In order to construct the underground power supply network security protection, monitoring and early warning system based on artificial intelligence, the coal mine power supply network security guarantee system is formed. In this system, the MCGSTPC7062K embedded touch screen is installed in every substation of underground mining area, and the SNP-2611 mine monitoring and protection device is installed in each high voltage switch cabinet. The monitoring and protection device collects the operation status information of each switchgear in real time, transmits it to TPC7062K, through 485 communication and displays the power parameters. The TPC7062K embedded touch screen control sub-station transmits the underground information to the ground monitoring host through Ethernet ring network. The implementation of this project provides technical support for eliminating the long-standing hidden danger of overstepping trip caused by short-circuit fault in high-voltage power network of mine. So the research of this subject has great practical value and important significance to the safe and efficient production of coal mine.
【學(xué)位授予單位】：青島科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TP368.12;TD611

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