Automatic disconnecting device of high-voltage falling type switch
A drop switch and automatic disconnection technology, which is applied to emergency protection devices, electrical components, circuits, etc., can solve problems such as easy to be burned, substation switch tripping, limited protection range, etc., to achieve fast and reliable fault removal, reliable and automatic The effect of controlling and protecting electrical equipment
Inactive Publication Date: 2014-08-13
STATE GRID CORP OF CHINA +3
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Problems solved by technology
However, this kind of switch mainly cuts off the faulty equipment through the fusing of the melt, the protection range is very limited and the operation reliability, sensitivity, and rapidity are poor, resulting in insufficient protection of the distribution transformer and easy to be burned. In the power grids of small county towns in mountainous areas, there are still many 10kV lines that are connected to small hydropower stations with lanterns. During operation, substation switches are prone to tripping, and small hydropower stations are not shut down in time, resulting in long-term overvoltage of the lines. The phenomenon that the voltage is not protected and burned
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Embodiment 1
[0027] An automatic disconnecting device for a high-voltage drop switch, including a protection circuit for protecting equipment and an actuator for controlling the automatic disconnection of a high-voltage drop switch. The actuator is connected to the protection circuit, and the protection circuit is abnormal when the equipment When a start signal can be generated to start the actuator connected to it to act, the actuator will push the high-voltage drop switch to realize the power-off protection 。 The connection between the iron core and the insulating rod is a connection that can change the position of the insulating rod relative to the iron core. The position between the insulating rod and the iron core is adjusted such that a long hole is provided along the axial direction of the insulating rod, and the relative position of the two can be changed by fixing the iron core at different positions on the long hole during use. The solenoid valve includes a housing, a coil, an ir...
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The invention discloses an automatic disconnecting device for a high-voltage drop switch, which includes a protection circuit for protecting equipment and an actuator for controlling the automatic disconnection of a high-voltage drop switch. The actuator is connected to the protection circuit, and the protection circuit When the equipment is abnormal, it can generate a start signal to start the actuator connected to it to act, and the actuator will disconnect the high-voltage drop switch to realize power-off protection. The automatic disconnecting device of the high-voltage drop switch has simple structure, reliable operation, and can automatically control the disconnection of the high-voltage drop switch safely, quickly and reliably, so as to quickly and reliably remove faults and achieve the purpose of protecting electrical equipment.
Description
technical field [0001] The invention relates to a high-voltage drop switch, in particular to an automatic disconnecting device for a high-voltage drop switch. Background technique [0002] At present, due to the characteristics of simple structure, low price and convenient use, the existing high-voltage drop switches are widely installed on the high-voltage side of distribution transformers as long-term overload and short-circuit protection for transmission and distribution lines and power transformers. At the same time, It can also be used to pull the line and the no-load transformer. In addition to the automatic drop of the fuse, it can also disconnect or connect the circuit through the insulating rod. However, this kind of switch mainly cuts off the faulty equipment through the fusing of the melt, and the protection range is very limited and the reliability, sensitivity, and rapidity of the action are poor, resulting in insufficient protection of the dist...
Claims
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IPC IPC(8): H01H85/54
Inventor 杨火炎揭业飘蒋文铭戴海辉
Owner STATE GRID CORP OF CHINA