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Energy storage motor control circuit of self-energy type sulfur hexafluoride circuit breaker

A technology of sulfur hexafluoride and energy storage motors, which can be used in high-voltage air circuit breakers, emergency protection devices for automatic disconnection, circuits, etc., and can solve problems such as hidden dangers in the safe operation of power grids

Inactive Publication Date: 2017-08-22
STATE GRID ANHUI ELECTRIC POWER CO LTD ANQING POWER SUPPLY CO +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The above extreme problems bring hidden dangers to the safe operation of the power grid

Method used

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  • Energy storage motor control circuit of self-energy type sulfur hexafluoride circuit breaker
  • Energy storage motor control circuit of self-energy type sulfur hexafluoride circuit breaker
  • Energy storage motor control circuit of self-energy type sulfur hexafluoride circuit breaker

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Embodiment Construction

[0022] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0023] combined reference image 3 and Figure 4 , The motor energy storage circuit includes a motor power supply circuit and a motor energy storage control circuit, the motor power supply circuit has an energy storage air switch Q3 and the normally open contacts KM1 and KM2 of the energy storage AC contactor, and the motor energy storage control circuit includes An AC circuit and a DC circuit, wherein the AC circuit is connected in series on the motor power supply circuit, and has a control coil of the energy storage AC contactor KM, a normally open contact of the energy storage intermediate relay K4 and an energy storage time relay KT Delayed open contacts, the DC circuit has control power ...

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Abstract

The invention discloses an energy storage motor control circuit of a self-energy type sulfur hexafluoride circuit breaker. The energy storage motor control circuit comprises a motor power supply circuit and a motor energy storage control circuit; the motor power supply circuit has an energy storage air switch and a normally open contact of an energy storage alternating current contactor; the motor energy storage control circuit comprises an alternating current circuit and a direct current circuit, wherein the alternating current circuit is connected with the motor power supply circuit in series; the direct current circuit has a control power supply air switch, an energy storage travel switch, and a control coil of an energy storage middle relay and a control coil of an energy storage time relay which are connected in parallel; the energy storage motor control circuit also comprises an alternating current relay, wherein the control coil of the alternating current relay is connected with the motor power supply circuit in series; and the normally open contact of the alternating current relay is connected with the control coil of the energy storage time relay in the direct current circuit in series. By adoption of the energy storage motor control circuit, when the alternating current is recovered, the motor control circuit can start energy storage as normal.

Description

technical field [0001] The invention relates to high-voltage switchgear, in particular to an energy storage motor control circuit of an automatic sulfur hexafluoride circuit breaker. Background technique [0002] Self-energy sulfur hexafluoride circuit breaker is a three-phase AC 50Hz outdoor high-voltage switchgear, suitable for the control and protection of high-voltage power transmission and transformation systems, and is the key equipment for the secondary circuit to control the primary circuit. [0003] Taking the LW35-126 high-voltage switch as an example, it is mainly composed of an arc extinguishing chamber, a base, a bracket and a spring operating mechanism. The spring operating mechanism includes components such as a closing energy storage spring, a pawl, a ratchet wheel and a pull rod. [0004] figure 1 and figure 2 The control loop of the energy storage motor of the LW35-126 switch is shown. exist figure 1 Among them, Q3 is the energy storage air switch, KM...

Claims

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Application Information

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IPC IPC(8): H02H3/02H01H33/36
CPCH02H3/021H01H33/36
Inventor 季华艳汪振中黄显耀徐云嵇义军胡细兵王涛张寅赵吴鹏
Owner STATE GRID ANHUI ELECTRIC POWER CO LTD ANQING POWER SUPPLY CO
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