一起高壓斷路器彈簧機構(gòu)拒分故障分析
楊鎮(zhèn)寧,龐博,何溪康,張鵬
(許繼德理施爾電氣有限公司,河南 許昌 461000)
摘 要:高壓斷路器是電力系統(tǒng)中常用的控制和保護設(shè)備,以 12 kV 斷路器開關(guān)柜彈簧機構(gòu)拒分故障為背景,分別對斷路器核心模塊的分閘阻力矩和機構(gòu)分閘輸出扭矩進行測試,驗證機構(gòu)與開關(guān)模塊的適配能力。檢查機構(gòu)核心部件分閘掣子的尺寸,通過計算摩擦圓半徑以及驅(qū)動力臂,查明故障原因是分閘掣子與限位塊導致力臂變短,阻力增加造成閉鎖,分閘彈簧無法驅(qū)動滾子實現(xiàn)分閘。
關(guān)鍵詞: 高壓斷路器;分閘掣子;機構(gòu)拒分;摩擦圓半徑
中圖分類號:TM561 文獻標識碼:B 文章編號:1007-3175(2023)05-0040-04
Analysis of a Mechanism Refuse Operation Failure of the
High Voltage Circuit Breaker Spring
YANG Zhen-ning, PANG Bo, HE Xi-kang, ZHANG Peng
(XJ Delishier Electric Co., Ltd, Xuchang 461000, China)
Abstract: The high voltage circuit breaker is the common control and protection equipment used in power systems. The paper, taking the mechanism refuse operation failure ccurring to the 12 kV circuit breaker switchgear as the research object, tests the opening resistance torque and output torque of the circuit breaker core module respectively to verify the mechanism adaptability to the switching module. Through checking the opening switch size of the mechanism core component and calculating friction circle radius and driving arms, it finds that the cause of this failure is the opening switch and the limit block make arms shorter and the increase of resistance leads to closedown so that the opening spring cannot drive the roller to open.
Key words: high voltage circuit breaker; opening switch; mechanism refuse operation; friction circle radius
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