紧凑型550 kV单断口气体断路器(GCB)的研发
2021-07-15路继伟刘锋段阿利李亚辉
路继伟 刘锋 段阿利 李亚辉



摘 要:550 kV-63 kA(50 Hz)单断口气体断路器是一种新研发的电气设备,跟双断品相比,新研发的断路器驱动能量少,结构简单且紧凑。其灭弧室采用复合压气原理,传动系统无连杆传递,运动系统简单。另外,这种断路器采用一体化的集成液压机构,整个集成液压系统内置油路,外部没有油管。因此,本文主要分析了这种新型断路器的结构特征及其研发过程的技术运用。
关键词:GCB;单断口;灭弧室;复合压气原理
中图分类号:F127文献标识码:A文章编号:1003-5168(2021)06-0063-03
The Development of Compact 550 kV Single-break Gas
Circuit Breaker (GCB)
LU Jiwei1LIU Feng1DUAN Ali1LI Yahui2
(1. Henan Pingzhi High Voltage Switchgear Co., Ltd.,Pingdingshan Henan 467013;
2. Pinggao Group Co., Ltd.,Pingdingshan Henan 467000)
Abstract: The 550 kV-63 kA (50 Hz) single-break GCB is a newly developed electrical equipment, compared with double-break products, the newly developed circuit breaker has less driving energy, simple and compact structure. The arc extinguishing chamber adopts the principle of compound compression, the transmission system has no connecting rod transmission, and the movement system is simple. In addition, this circuit breaker adopts an integrated integrated hydraulic mechanism, the entire integrated hydraulic system has a built-in oil circuit, and there is no external oil pipe. Therefore, this paper mainly analyzed the structural characteristics of this new type of circuit breaker and its technical application in the development process.
Keywords: GCB;single fracture;arc extinguishing chamber;principle of compound compression
近年来,我国电力需求快速增长,电力系统随之不断扩充和改造。在这种情况下,有必要研发更紧凑的开关设备。开关是变电站的核心设备之一,要求容量大、可靠性高、可维护性好[1-2]。从环保角度看,为了减少SF6气体的消耗量,基本对策就是缩小電站设备的体积。为满足不断提出的新要求,笔者研发了一种新型的550 kV-63 kA(50 Hz)单断口气体断路器(GCB)。同现有的双断口结构相比,新研发的断路器结构更紧凑、更简单,所需驱动能量也更少。
20多年来,复合压气原理广泛应用于72~1 100 kV的断路器灭弧室结构中。新研发的灭弧室是以复合压气原理为基础改进的。这种灭弧室采用了复合自熄弧技术:除了选择合适的喷口尺寸和压气腔尺寸外,还吸收电弧能量来提高气吹压力。本文重点介绍紧凑型GCB结构的特点和研发过程中的技术应用。
1 新研发的单断口气体断路器概述
基于国际电工委员会(IEC)标准及中国国家标准(GB)而新研发单断口气体断路器(GCB)的额定参数如表1所示。……
