【正文】
期并列裝置從理論上講可以使合閘相角等差等于零。不滿足時(shí)則進(jìn)行相應(yīng)調(diào)整,并選出合適的時(shí)間發(fā)出合閘信號(hào),使并列斷路器合閘,將發(fā)電機(jī)投入系統(tǒng)并列運(yùn)行。并列斷路器兩側(cè)電壓的幅值差、頻率差(或相角頻率之差)和相角差之間的關(guān)系為=(或=)=(或==2)=()()在并列斷路器合閘時(shí),最理想的情況是斷路器兩側(cè)電壓完全相同。 發(fā)電機(jī)的同期并列操作最終事通過(guò)并列斷路器的合閘來(lái)完成的。由于發(fā)電機(jī)再未加勵(lì)磁的情況下就投入系統(tǒng),相當(dāng)于系統(tǒng)經(jīng)過(guò)很小的電抗而短路,所以并列斷路器合閘時(shí)沖擊電流較大。 同期并列操作在發(fā)電廠中是一項(xiàng)經(jīng)常性的重要操作,如果出現(xiàn)誤操作將會(huì)造成非同期并列,可能產(chǎn)生巨大的電流,導(dǎo)致電力系統(tǒng)產(chǎn)生強(qiáng)大的電動(dòng)力,可能對(duì)電氣設(shè)備產(chǎn)生嚴(yán)重?fù)p壞,從而給電力系統(tǒng)帶來(lái)及其嚴(yán)重的后果。在某些情況下,甚至需要將已被解列為兩部分的電力系統(tǒng)重新恢復(fù)并列運(yùn)行關(guān)鍵詞:同步發(fā)電機(jī)、同期系統(tǒng)、并列操作Synchronous generator in the corresponding period system and tied for operationThe author:Fancongbo Guiding teacher:ShizhaiAstract:In order to improve the reliability and electrical energy quality of providing electricity, the generator of power system is usually operated in parallel connection. According to the system operation circumstances, synchronous generators are usually put into or withdrawn from transmissionline system of electric power. One or more synchronous generators are sometimes withdrawn or put into operation. In some cases, it is even necessary to restore arrangement in parallel operation from two parts of