Circuit breaker energy storage motor protection and control system and method

A technology for energy storage motors and control systems, applied in emergency protection circuit devices, electrical components, etc., can solve problems such as single control strategy, high instantaneous load pressure of motors, affecting the service life and safety performance of energy storage motors and operating mechanisms, etc. To achieve the effect of improving service life and ensuring safe operation

Pending Publication Date: 2022-01-11
ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this stage, the control of energy storage motors is generally directly completed by a primary operating mechanism, the control strategy is single, the instantaneous load pressure of the motor is large, and the necessary state monitoring, fault judgment and protection control mechanism are lacking during the motor startup period, which will directly affect the energy storage. The service life and safety performance of the motor and operating mechanism

Method used

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  • Circuit breaker energy storage motor protection and control system and method
  • Circuit breaker energy storage motor protection and control system and method
  • Circuit breaker energy storage motor protection and control system and method

Examples

Experimental program
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Effect test

Embodiment 1

[0028] as attached figure 1 A circuit breaker energy storage motor protection and control system is shown, which includes an energy storage motor current acquisition module, a two-stage overcurrent protection module, a motor overtime protection module, a motor start and stop control module, and a monitoring data collection and sending module. components.

[0029] The energy storage motor current collection module is used to collect and calculate the current of the three-phase energy storage motor, which is called by the subsequent module. The energy storage motor current acquisition module includes a Hall current sensor, a sampling processing board and a software calculation processing unit. The Hall current sensor is connected to the cable of the energy storage motor control circuit through the core, and is powered by the 24V DC power supply in the control cabinet. Power supply; when the energy storage motor is running, the sensor transmits the collected three-phase energy s...

Embodiment 2

[0039] This embodiment provides a circuit breaker energy storage motor protection and control method, which collects the current of the three-phase energy storage motor, and at the same time configures 3 pairs of normally open contacts to realize the start and stop control of the energy storage motor. Overtime protection monitors and adjusts the motor running process in real time. Once an abnormality is found, the power supply circuit of the motor is disconnected to protect the safe operation of the energy storage motor. At the same time, the collected energy storage motor current information is sent to the monitoring background of the substation through the optical fiber network.

[0040] The 3 pairs of normally open contacts are respectively connected in series in the three external expansion relay circuits of KMA, KMB, and KMC in the HSBC cabinet. When the normally open contacts are closed, the three external expansion relays will be driven to act, and the external expansion ...

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PUM

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Abstract

The invention discloses a circuit breaker energy storage motor protection and control system and method. In order to solve risks and problems existing in operation control of an energy storage motor in an existing circuit breaker operating mechanism, the system comprises an energy storage motor current acquisition module, a two-section over-current protection module, a motor overtime protection module, a motor start-stop control module and a monitoring data collection and uploading module. The current of the energy storage motor is acquired and analyzed, real-time fault monitoring is performed on the operation process of the motor, if overcurrent or overtime faults of the motor exist, sudden stop and locking of the energy storage motor are realized through contact control, and monitoring information is uploaded to a monitoring background of a transformer substation, so that the operation safety of the energy storage motor is ensured; and the service life of the energy storage motor is prolonged.

Description

technical field [0001] The invention relates to the field of energy storage motor control, in particular to a circuit breaker energy storage motor protection and control system and method. Background technique [0002] The spring operating mechanism is the most common application in high-voltage circuit breakers. Its components include springs, energy storage systems, ratchets, operating mechanisms and connecting rods. The main principle is to start the energy storage motor after the circuit breaker closing action is completed. To drive and stretch the spring to store energy for the next opening and closing action. At this stage, the control of energy storage motors is generally directly completed by a primary operating mechanism, the control strategy is single, the instantaneous load pressure of the motor is large, and the necessary state monitoring, fault judgment and protection control mechanism are lacking during the motor startup period, which will directly affect the e...

Claims

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Application Information

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IPC IPC(8): H02H7/08
CPCH02H7/08
Inventor 戚宣威黄晓明王松徐华钱建国方愉冬潘武略吴佳毅钱平方芳孙文文陈明曹文斌钱政旭韩松杰秦贵峰
Owner ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY
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