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摘要:供應(yīng)紅草地區(qū)的輸電線(xiàn)路已接近滿(mǎn)載運(yùn)行，并已無(wú)路徑供新增負(fù)荷，而且用電負(fù)荷也增長(zhǎng)較快，預(yù)計(jì)在2015年該地區(qū)電負(fù)荷將達(dá)到40MW。廣東電網(wǎng)公司汕尾供電局根據(jù)分層分區(qū)的供電原則，并按《汕尾市 “十一五” 電網(wǎng)規(guī)劃》，擬定在紅草鎮(zhèn)建設(shè)一座110kV變電站，來(lái)滿(mǎn)足該地區(qū)用電需求，同時(shí)也改善了汕尾城區(qū)的110kV主網(wǎng)結(jié)構(gòu)及10kV配電網(wǎng)結(jié)構(gòu)，提高供電的質(zhì)量和可靠性。 本文主要內(nèi)容是汕尾110kV紅草變電站一次部分的初步設(shè)計(jì)，包括主接線(xiàn)選擇、主變的選擇、短路電流計(jì)算、直流系統(tǒng)設(shè)計(jì)、高壓電器設(shè)備選型、母線(xiàn)系統(tǒng)設(shè)計(jì)、配電裝置設(shè)計(jì)、防雷接地保護(hù)設(shè)計(jì)及部分圖紙繪制與修改。 其中，課題研究的負(fù)荷、主變?nèi)萘考芭_(tái)數(shù)都已給定，主要完成的設(shè)計(jì)任務(wù)是確定紅草站接入系統(tǒng)方案、選擇電氣主接線(xiàn)方式、選擇主變壓器、計(jì)算短路電流，并根據(jù)短路電流結(jié)果選擇高壓電器設(shè)備；直流系統(tǒng)、母線(xiàn)系統(tǒng)、配電裝置、防雷和接地保護(hù)均采用南方電網(wǎng)2009年版的《南方電網(wǎng)變電站標(biāo)準(zhǔn)設(shè)計(jì)細(xì)化方案，第三卷 110kV變電站標(biāo)準(zhǔn)設(shè)計(jì)細(xì)化方案，第十篇 CSG-110B-3B24AWD方案》；另外，結(jié)合紅草站實(shí)際來(lái)修改典型設(shè)計(jì)圖紙。 110kV紅草變電站最終規(guī)模為三臺(tái)50MVA的雙繞組變壓器；110kV共4回架空出線(xiàn)，采用單母線(xiàn)斷路器分段接線(xiàn)，10kV共36回電纜出線(xiàn)，采用單母線(xiàn)雙分段四段母線(xiàn)接線(xiàn)。 關(guān)鍵詞：變電站，110kV，初步設(shè)計(jì)，一次部分，主接線(xiàn)，主變壓器
Abstract:Supply of red grass area close to full load running transmission lines, and is no longer the path for new load, and electricity load also increased rapidly in the region in 2015 is expected to power load will reach 40MW. Shanwei Power Supply Bureau of Guangdong Power Grid Corporation's electricity supply according to the principle of hierarchical partition, click the The Eleventh Five Power System Planning of Shanwei, prepared to build a town in the red grass 110kV substation, to meet electricity demand in the region, but also improve the Shanwei City 10kV 110kV main network structure and distribution network structure and improving the quality and reliability of power supply. This article content is one of Shanwei 110kV substation red grass part of the preliminary design, including the main connection options, choice of main transformer, short circuit current calculation, dc system design, high voltage electrical equipment selection, bus system, power distribution equipment design, lightning protection Ground protection design and some drawings and modifications. Among them, the research load, the number of main transformer capacity and Taiwan have been given, mainly to complete the design task is to determine how the Station Access System, select the main electrical wiring, select the main transformer, calculating short-circuit current, and under short-circuit current Select high-voltage electrical equipment results. DC systems, busbar systems, power distribution equipment, lightning protection and grounding protection are used China Southern Power Grid Company in 2009 edition of Substation in refining the program, The Volume III thinning 110kV Substation in the program, The 10th Chapter CSG-110B-3B24AWD program. In addition, the combination of real red grass station to modify the typical design drawings. The Substation 110kV three final size of the two-winding transformer 50MVA; 110kV overhead of 4 Back to qualify a single bus section circuit breaker wiring, 10kV cable outlet 36 back to a single bus Double Segment Siduan Busbar. Keyword: Substation, 110kV, preliminary design, a part of the main cable, main transformer
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