The invention discloses a rotary contact structure of a vacuum arc extinguishing chamber suitable for capacitive load switching, which is composed of a moving conducting rod, a static conducting rod, a moving end cup seat, a moving end rotating contact and a static end contact. A spring is arranged in the moving contact groove of the moving end cup seat, and the moving end rotating contact is fixedly connected with the moving end cup seat through a spring; the moving end rotating contact is sliding with the moving end cup seat through a contact and a sliding groove Dynamic connection: the lower surface of the rotating contact at the moving end contacts with the upper surface of the static contact. A check valve is arranged at both ends of the chute. During the operation of the vacuum interrupter, the rotating contact at the moving end will always rotate, which can avoid the static fusion welding on the contact surface during the closing process, and reduce the insulation weakness of the contact surface by the sliding friction between the lower surface of the rotating contact at the moving end and the upper surface of the contact at the static end, so as to effectively reduce the probability of re striking of the capacitive load switching in the vacuum interrupter, which can be used for switching the capacitance Load is especially suitable for the field of reactive power compensation in power system.
【技术实现步骤摘要】
一种适用于容性负载投切的真空灭弧室的旋转触头结构
本专利技术涉及真空灭弧室触头结构
,尤其是涉及一种适用于容性负载投切的真空灭弧室的旋转触头结构。
技术介绍
无功功率补偿对维持电网安全、优质、经济运行具有重要作用。电力系统中存在着大量的容性负载与感性负载,这些负载会在电力系统运行过程中产生大量的无功功率,无功功率会增加系统损耗,导致负载端的电压值低于额定值,因此为维持电力系统的电压水平,保证供电质量,提高传输能力,对电力系统进行无功功率补偿不可或缺。根据电网运行数据统计,每输出1kW的有功功率,需同时匹配1.3kvar左右的无功功率,这样才能让电力系统电压维持在正常水平。电力系统中的负载是时刻在波动的,电力系统中对于无功功率的需求也是在频繁变化的,因此进行无功补偿的电容器组也会被频繁地从电力系统中投入和切除以维持电力系统电压的稳定。据Bonfanti等人的调查显示,电力系统中,60%用于无功补偿的电容器组平均每年会被投切300次左右,另外有30%每年被投切的次数能达到700次左右。其中,主要是利用电力开关设备来 ...
【技术保护点】
1.一种适用于容性负载投切的真空灭弧室的旋转触头结构,其特征在于:由动导电杆、静导电杆、动端杯座、动端旋转触头和静端触头组成,静端触头与静导电杆固定连接,动端杯座与动导电杆固定连接,且在动端杯座内设有向下开口的动触头槽,在动触头槽内设有竖向放置的弹簧,弹簧的顶端固定在动触头槽内的顶端,弹簧的底端固定在动端旋转触头的顶端,使得动端旋转触头通过弹簧与动端杯座固定连接;在动触头槽内的侧壁设有滑槽,在动端旋转触头外侧壁的顶端均匀设有若干个能在滑槽中移动的触点,使得动端旋转触头通过触点和滑槽与动端杯座滑动连接;动端旋转触头的下表面与静端触头的上表面进行面接触。/n
【技术特征摘要】
1.一种适用于容性负载投切的真空灭弧室的旋转触头结构,其特征在于:由动导电杆、静导电杆、动端杯座、动端旋转触头和静端触头组成,静端触头与静导电杆固定连接,动端杯座与动导电杆固定连接,且在动端杯座内设有向下开口的动触头槽,在动触头槽内设有竖向放置的弹簧,弹簧的顶端固定在动触头槽内的顶端,弹簧的底端固定在动端旋转触头的顶端,使得动端旋转触头通过弹簧与动端杯座固定连...
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