供配電系統(tǒng)外文翻譯(2)-其他專業(yè)-wenkub.com
2025-01-15 07:26 本頁(yè)面
【正文】 同步調(diào)相機(jī)和靜止無(wú)功補(bǔ)償器提供有源補(bǔ)償，其吸收或發(fā)出的無(wú)功功率是自動(dòng)調(diào)節(jié)的，以便將其連接的母線電壓維持穩(wěn)定。要控制整個(gè)系統(tǒng)中的電壓，還有一些其他的方法也是經(jīng)常采用的。這就與頻率控制時(shí)的情形截然相反，頻率控制是取決于系統(tǒng)總的有功平衡的。這就確保了輸電系統(tǒng)的有效運(yùn)行，也就是說(shuō)確保了有功功率的傳輸。設(shè)備長(zhǎng)時(shí)間的過(guò)電壓運(yùn)行，可能對(duì)運(yùn)行性能產(chǎn)生負(fù)面作用。該功能通常就稱之為負(fù)荷 頻率控制。 在由兩個(gè)或兩個(gè)以上相互獨(dú)立控制的區(qū)域組成的相互連接的電力系統(tǒng)中，除了控制頻率以外，對(duì)各個(gè)區(qū)域的發(fā)電量也要進(jìn)行控制，以便在各個(gè)區(qū)域之間進(jìn)行發(fā)電計(jì)劃的調(diào)節(jié)。電鐘和其他運(yùn)川頻率計(jì)時(shí) 的裝置的廣泛應(yīng)用，都要求維持準(zhǔn)確的同步時(shí)間，而時(shí)間是與頻率的積分成正比的。 為能使電力系統(tǒng)的運(yùn)行得到令人滿意的效果，頻率應(yīng)該維持大致恒定。然而，如果某臺(tái)發(fā)電機(jī)電壓因?yàn)閯?lì)磁電流的問(wèn)題而與系統(tǒng)的電壓有所差棄今便會(huì)在系統(tǒng)中另外產(chǎn)生無(wú)功潮流。為了給電力系統(tǒng)的用戶提供令人滿意的服務(wù)，系統(tǒng)的電壓、頻率、連接線處的涌流、線電流，以及設(shè)備負(fù)荷率，必須要限制在安全的范圍之內(nèi)。 提出一種通過(guò)電量突變和異常分析防止竊電的新方法 ， 并在濰坊城區(qū)配電得到驗(yàn)證 。 自動(dòng)實(shí)現(xiàn)故障快速隔離與網(wǎng)絡(luò)重構(gòu) ， 減少了用戶停電范圍和時(shí)間 ， 有效提高配網(wǎng)供電可靠性 。 s Iamp。 本文就是以此為契機(jī)以國(guó)內(nèi)外配電自動(dòng)化中一些前沿問(wèn)題為內(nèi)容 ， 以配電自動(dòng)化建設(shè)為背景 ， 對(duì)當(dāng)前電力系統(tǒng)的熱點(diǎn)技術(shù)進(jìn)行一些較深入的探討和研究 ， 主要完成了如下工作 。the reactive power absorbed/supplied by them is automatically adjust so as to maintain voltages of the buses to which they are connected. 供配電系統(tǒng) 電力系統(tǒng)的基本功能是向用戶輸送電能。 table on problem . It brings out optimized isolation and resume plan, realizes auto isolation and work reconstruction, reduces the power off range and time and improves the reliability of electric power supply through problem self diagnoses and selfanalysis. It also introduces software flow and use for problem judgement and sets a model on work reconstruction and puter flow. Thirdly, electricity system state is estimated to be one of the key techniques in DA realization. The dissertation remends the resolvent of bad measurement data and structure mistake on the ground of describing state estimate way. It also advances a practical test and judging way on topology mistake in state estimate about bad data test and abnormity in state estimate as well as the problem and effect on bad data from state measure to state estimate .As for real time monitor and control problem, the dissertation introduces a new way to solve them by electricity break and exceptional analysis, and the way has been tested in Weifang DA. Fourthly, about the difficulty for building the model of load forecasting, big parameter scatter limit and something concerned, the dissertation introduces some parameters, eg. weather factor, date type and social environment effect based on analysis of routine load forecasting and means. It presents the way for electricity load forecasting founded on neural work(ANN),which has been tes
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