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中低壓配電網(wǎng)線路的設(shè)計(jì)與實(shí)施

發(fā)布時(shí)間:2018-05-11 01:24

  本文選題:優(yōu)化配網(wǎng) + 負(fù)荷預(yù)測(cè); 參考:《華北電力大學(xué)》2017年碩士論文


【摘要】:過(guò)去對(duì)中低壓配電網(wǎng)建設(shè)的重視不夠,投入的建設(shè)資金較少,致使中低壓配電網(wǎng)的網(wǎng)絡(luò)結(jié)構(gòu)不完善,造成配電網(wǎng)供電能力不足、配電網(wǎng)結(jié)構(gòu)薄弱,設(shè)備老化,部分環(huán)節(jié)出現(xiàn)“卡脖子”現(xiàn)象等問(wèn)題。中低壓配電網(wǎng)的合理規(guī)劃是電力系統(tǒng)規(guī)劃的重要組成部分,也是配電網(wǎng)建設(shè)與改造的重要依據(jù)。中低壓配電網(wǎng)的建設(shè)將不再僅考慮短期的用戶用電需求,它將對(duì)所在區(qū)域電網(wǎng)整體運(yùn)行產(chǎn)生長(zhǎng)遠(yuǎn)的影響。正確、科學(xué)、合理的中低壓電網(wǎng)規(guī)劃不僅有助于提升電網(wǎng)的整體供電能力,同時(shí)可以保證輸配電的可靠性,有助于提高配電網(wǎng)供電質(zhì)量、降低能源損耗,更重要的是可以有助于提高社會(huì)經(jīng)濟(jì)效益。進(jìn)行中低壓配電網(wǎng)規(guī)劃主要是解決目前配電網(wǎng)運(yùn)行結(jié)構(gòu)差、設(shè)備老化等問(wèn)題,通過(guò)優(yōu)化配電網(wǎng)結(jié)構(gòu)、合理規(guī)劃配電網(wǎng)建設(shè),將不斷提高各地區(qū)配電網(wǎng)供電安全性、可靠性、經(jīng)濟(jì)性。本文在對(duì)中低壓配電網(wǎng)現(xiàn)狀的研究基礎(chǔ)上,結(jié)合中低壓配電網(wǎng)設(shè)計(jì)原則對(duì)河北某地區(qū)的實(shí)際用電情況進(jìn)行了分析并重點(diǎn)關(guān)注中低壓配電網(wǎng)線路施工的特點(diǎn),采用負(fù)荷預(yù)測(cè)的方式對(duì)該地區(qū)的中低壓配電網(wǎng)進(jìn)行了設(shè)計(jì)改造。同時(shí)根據(jù)規(guī)劃設(shè)計(jì)方案制定了相應(yīng)實(shí)施措施,并嚴(yán)格按照施工要求操作完成了該地區(qū)中低壓配電網(wǎng)線路優(yōu)化改造工作。經(jīng)過(guò)改造后的電網(wǎng)線路不僅具有堅(jiān)強(qiáng)的網(wǎng)架結(jié)構(gòu)和標(biāo)準(zhǔn)簡(jiǎn)潔的接線原則,在經(jīng)濟(jì)性和可行性上也有較大的提升。與此同時(shí),新出線投運(yùn)后,該地區(qū)現(xiàn)有負(fù)荷將由新線路供電,縮短了供電半徑,提高了供電質(zhì)量,降低了線損率,實(shí)現(xiàn)節(jié)能輸電,具有較高的應(yīng)用價(jià)值。
[Abstract]:In the past, insufficient attention has been paid to the construction of medium and low voltage distribution networks, and less construction funds have been invested, resulting in imperfect network structure of medium and low voltage distribution networks, insufficient power supply capacity of distribution networks, weak distribution network structure and aging equipment. Some links appear the phenomenon of "neck sticking" and so on. The reasonable planning of medium and low voltage distribution network is an important part of power system planning, and is also an important basis for the construction and transformation of distribution network. The construction of medium and low voltage distribution network will not only consider the short-term consumer demand, it will have a long-term impact on the overall operation of the regional network. Correct, scientific and reasonable planning of medium and low voltage power network is not only helpful to improve the overall power supply capacity of the network, but also to ensure the reliability of transmission and distribution, to improve the quality of power supply in the distribution network, and to reduce the energy loss. More importantly, it can help to improve social and economic benefits. The main purpose of middle and low voltage distribution network planning is to solve the problems of poor operation structure and aging equipment of distribution network at present. By optimizing the distribution network structure and rationally planning distribution network construction, the security and reliability of distribution network in various regions will be continuously improved. Economy. On the basis of the research on the present situation of the medium and low voltage distribution network, this paper analyzes the actual power consumption situation in a certain area of Hebei Province and focuses on the characteristics of the construction of the middle and low voltage distribution network line in combination with the design principle of the medium and low voltage distribution network. The medium-low-voltage distribution network in this area is designed and reformed by load forecasting. At the same time, according to the plan and design scheme, the corresponding implementation measures are worked out, and the optimized transformation of the middle and low voltage distribution network in this area is completed in strict accordance with the construction requirements. The reformed power line not only has strong grid structure and simple standard wiring principle, but also has a great improvement in economy and feasibility. At the same time, after the new line is put into operation, the existing load in this area will be supplied by the new line, which shortens the power supply radius, improves the power supply quality, reduces the line loss rate, realizes the energy saving transmission, and has higher application value.
【學(xué)位授予單位】:華北電力大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2017
【分類號(hào)】:TM715;TM73

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