电力自动化设备
電力自動化設備
전력자동화설비
ELECTRIC POWER AUTOMATION EQUIPMENT
2009年
12期
122-126
,共5页
黄蕾%姚挺生%沈俪%傅明
黃蕾%姚挺生%瀋儷%傅明
황뢰%요정생%침려%부명
9FA型燃气-蒸汽联合循环发电机组%LCI变频启动%国产化%保护%方案
9FA型燃氣-蒸汽聯閤循環髮電機組%LCI變頻啟動%國產化%保護%方案
9FA형연기-증기연합순배발전궤조%LCI변빈계동%국산화%보호%방안
9FA gas-steam combined-cycle generator-transformer unit%LCI variable-frequency startup%localization%protection%scheme
9FA型燃气-蒸汽联合循环发电机组一般采用配套进口保护设备,还没有采用国产保护设备的应用实例.结合电厂的工程实践,分析比较了9FA型燃气轮发电机组的运行方式与常规机组的差异,重点针对发电机启停机保护、发电机定子接地保护、发电机差动保护、主变压器差动保护,以及其他后备保护.深入研究了这些保护在负载换流型变频器(LCI)系统变频启动过程中的运行特点.通过采用与频率无关的保护原理以及特性化配置,提出了9FA型燃气-蒸汽联合循环发电机组采用国产保护设备的变频启动解决方案和主保护解决方案.
9FA型燃氣-蒸汽聯閤循環髮電機組一般採用配套進口保護設備,還沒有採用國產保護設備的應用實例.結閤電廠的工程實踐,分析比較瞭9FA型燃氣輪髮電機組的運行方式與常規機組的差異,重點針對髮電機啟停機保護、髮電機定子接地保護、髮電機差動保護、主變壓器差動保護,以及其他後備保護.深入研究瞭這些保護在負載換流型變頻器(LCI)繫統變頻啟動過程中的運行特點.通過採用與頻率無關的保護原理以及特性化配置,提齣瞭9FA型燃氣-蒸汽聯閤循環髮電機組採用國產保護設備的變頻啟動解決方案和主保護解決方案.
9FA형연기-증기연합순배발전궤조일반채용배투진구보호설비,환몰유채용국산보호설비적응용실례.결합전엄적공정실천,분석비교료9FA형연기륜발전궤조적운행방식여상규궤조적차이,중점침대발전궤계정궤보호、발전궤정자접지보호、발전궤차동보호、주변압기차동보호,이급기타후비보호.심입연구료저사보호재부재환류형변빈기(LCI)계통변빈계동과정중적운행특점.통과채용여빈솔무관적보호원리이급특성화배치,제출료9FA형연기-증기연합순배발전궤조채용국산보호설비적변빈계동해결방안화주보호해결방안.
9FA gas-steam combined-cycle generator-transformer unit are normally equipped with imported protections without any applications of homemade equipment.Combined with the project practice of gas power plant,the differences of operational modes between 9FA and conventional units are analyzed,focusing on the generator startup/shutdown protection,generator stator grounding protection,generator differential protection,main transformer differential protection and other backup protections.The operational characteristics of these protections during the variable-frequency startup process of LCI system are deeply analyzed.By applying the frequency-independent principle and customized protection configuration,the variable-frequency startup protection scheme and main protection scheme with homemade equipment are put forward for 9FA gas-steam combined-cycle generator-transformer unit.