CAJ | 학술논문

介绍了以金华500 kV双龙变电站为工程试点的500 kV直流融冰兼动态无功补偿系统,叙述了可控整流器型直流融冰兼动态无功补偿装置、融冰专用直流母线及移动式母线连接器的原理、结构、功能与特点.该系统采用多项专利技术,具有在直流融冰与无功补偿2种工作模式之间切换时不改变直流融冰兼动态无功补偿装置内部主电路和控制程序结构,只需通过外部隔离开关矩阵的简单切换操作,即可在对电网运行影响最小的前提下实现工作模式切换,以及融冰模式下同一线路不同相别或不同线路之间的平衡(循环)融冰切换操作等突出优点.
개소료이금화500 kV쌍룡변전참위공정시점적500 kV직류융빙겸동태무공보상계통,서술료가공정류기형직류융빙겸동태무공보상장치、융빙전용직류모선급이동식모선련접기적원리、결구、공능여특점.해계통채용다항전리기술,구유재직류융빙여무공보상2충공작모식지간절환시불개변직류융빙겸동태무공보상장치내부주전로화공제정서결구,지수통과외부격리개관구진적간단절환조작,즉가재대전망운행영향최소적전제하실현공작모식절환,이급융빙모식하동일선로불동상별혹불동선로지간적평형(순배)융빙절환조작등돌출우점.
This paper introduces the DC deicer-SVC system in a pilot project in Shuanglong 500 kV Substation of Jinhua, Zhejiang Province. The principles, structures, functions and features of the controlled rectifier based DC deicer-SVC installation, deicing DC bus and mobile bus-connector are illustrated in detail. Supported by several proprietary technologies, this system can work in "deicer mode" or "SVC mode", which can be switched by simple operations of external isolating switch matrix, without changing the internal main circuit and control program of the installation. This means the impact on power grid is minimized when the system changes work modes, or balance de-ices (circle de-ices) for conductors of different lines and different phases of one line in "deicer mode".