壓縮包內(nèi)含有CAD圖紙和說(shuō)明書(shū),均可直接下載獲得文件,所見(jiàn)所得,電腦查看更方便。Q 197216396 或 11970985
摘要
煤礦地面變電所是煤礦供配電的重要組成部分,它直接影響整個(gè)煤礦供電的可靠運(yùn)行,是聯(lián)系地面與井下的中間環(huán)節(jié),起著變換和分配電能的作用。電氣主接線(xiàn)是地面變電所的主要環(huán)節(jié),電氣主接線(xiàn)的擬定直接關(guān)系著全所電氣設(shè)備的選擇、配電裝置的布置、繼電保護(hù)和自動(dòng)裝置的確定,是決定變電所電氣部分技術(shù)經(jīng)濟(jì)性能的關(guān)鍵因素。
本設(shè)計(jì)初步設(shè)計(jì)了煤礦地面35kV變電站的設(shè)計(jì)。設(shè)計(jì)過(guò)程主要包括負(fù)荷計(jì)算、主接線(xiàn)設(shè)計(jì)、短路計(jì)算、電氣設(shè)備選擇、繼電保護(hù)方案等。通過(guò)對(duì)煤礦35KV變電站做負(fù)荷統(tǒng)計(jì),用需用系數(shù)法進(jìn)行負(fù)荷計(jì)算,根據(jù)負(fù)荷計(jì)算的結(jié)果確定出該站主變壓器的臺(tái)數(shù)、容量及型號(hào)。用標(biāo)幺值法對(duì)供電系統(tǒng)進(jìn)行了短路電流計(jì)算,為電氣設(shè)備的選擇及校驗(yàn)提供了數(shù)據(jù)。根據(jù)煤礦供電系統(tǒng)的特點(diǎn),制定了礦井變電所的主結(jié)線(xiàn)方式、運(yùn)行方式、繼電保護(hù)方案。其中35kV側(cè)為內(nèi)橋接線(xiàn),6kV主接線(xiàn)為單母分段。兩臺(tái)主變壓器采用分列運(yùn)行方式。并根據(jù)電流整定值以及相關(guān)數(shù)據(jù)的校驗(yàn),選擇了斷路器、隔離開(kāi)關(guān)、繼電器、變壓器等電氣設(shè)備。
關(guān)鍵詞:變電所;地面;選型;系統(tǒng)設(shè)計(jì);
2
Abstract
Coal mine ground substation is an important part of the coal mine power supply, it directly affect the reliable operation of the whole coal mine power supply, is contact with the ground and underground of the intermediate links, plays a transformation and distribution of electric energy effect. Ground substation main electrical wiring is the main link, the main electrical wiring to unsafe has a close relationship with the selection of electrical equipment, power distribution equipment layout, the determination of relay protection and automatic device of electric substation technical and economic performance is the key factor.
The preliminary design of the coal mine ground, 35 kv substation design. Its design process mainly include load calculation, the main wiring design, short-circuit calculation, electrical equipment selection, relay protection scheme, etc. Through to the coal mine do load statistical 35 kv transformer substations, the demand factor method for load calculation, according to the result of load calculation to determine the station of the main transformer sets, capacity and model number. With the method of power supply system for the short-circuit current calculation, provides the selection of electrical equipment and calibration data. According to the characteristics of the coal mine power supply system, make the mine substation main connection mode, operation mode, relay protection scheme. Within 35 kv side for bridge connection, 6 kv single mother block for main connection. Two of the main transformer USES operation mode respectively. And according to the current setting value and related data check, choose the circuit breaker, isolating switch, relay, transformers and other electrical equipment.
Keywords: Substation; The ground; Selection; System design;