CAJ | 학술논문

近年国内大力开展输电线路增容运行研究以提高输电线路输送容量,研究范围主要集中在线路正常运行条件下,可是在电网基建检修、事故应急等特殊情况下,输电线路同样存在增容运行需求.广东在开展架空线路正常增容研究基础上,对线路特殊增容可行性进行研究,通过计算架空线路在特殊增容载流下的弧垂变化和特殊增容运行要求的最小跨距,确认实施线路特殊增容是可行的,并提出特殊允许电流I_1、I_2的确定原则和验算方法,对多回实际运行线路展开特殊增容实例分析,确认在电网特殊情况下可实现架空送电线路安全增容运行.
근년국내대력개전수전선로증용운행연구이제고수전선로수송용량,연구범위주요집중재선로정상운행조건하,가시재전망기건검수、사고응급등특수정황하,수전선로동양존재증용운행수구.엄동재개전가공선로정상증용연구기출상,대선로특수증용가행성진행연구,통과계산가공선로재특수증용재류하적호수변화화특수증용운행요구적최소과거,학인실시선로특수증용시가행적,병제출특수윤허전류I_1、I_2적학정원칙화험산방법,대다회실제운행선로전개특수증용실례분석,학인재전망특수정황하가실현가공송전선로안전증용운행.
The studies on raising line transmission capability are carried out in recent years, which is mainly in normal operation condition. It is necessary to raise transmission capability in special operation mode such as in power grid mentenence and fault emergency condition. Based on study of raising line transmission capability in normal operation condition, the feasibility of raising line transmission capability in special operation mode was carried out, which was validated by sag change calculation of line raising capability and comparison with the demand span. Moreover, the establishment principle and check computation method of allowable current I_1、I_2 in special operation were put forward. The examples on practical operating line were analyzed, which confirmed the realization of raising line transmission capability in special operation mode.