As a powerful component of a circuit breaker, thereliability of energy storage spring plays an important role in the drive and control the operation of a circuit breaker motion process.
Abstract: Spring operation mechanism is widely used in high voltage circuit breakers, and its reliability is related to the ability of the circuit breaker breaking fault current. During the life cycle of spring operating mechanism, stress relaxation, metal fatigue, and any other mechanical defects are easily occurring.
During the life cycle of spring operating mechanism, stress relaxation, metal fatigue, and any other mechanical defects are easily occurring. And the mechanical performance of the circuit breaker will be influenced by the above defects.
In the present paper, the 252 kV circuit breakers are used as test objects. Firstly, the spring stress relaxation test, the life-cycle test, and the failure simulated test of 252 kV circuit breakers are carried out. Secondly, a multi-body dynamics simulation model of the experimental prototype is established.
Fig. 1 is the circuit breaker energy storage motor current data acquisition system, in which ① is the auxiliary switch, ② is the opening spring, ③ is the closing spring, ④ is the closing …
The so-called energy storage means that when the circuit breaker is de-energized (that is, when it is opened), it opens quickly due to the spring force of the energy storage switch. Of course, …
Therefore, identifying and predicting the mechanical conditions of the spring operation mechanism can improve the reliability of the circuit breaker. In the present paper, …
While traditional AC mechanical circuit breakers can protect AC circuits, many other DC power distribution technologies, such as DC microgrids (MGs), yield superior …
To address this problem, this research put forward a hybrid method for spring energy storage state identification and successfully applied it to the operating mechanism of circuit breakers. …
A fault identification method for circuit breaker energy storage mechanism, combined with current–vibration signal entropy weight characteristic and Grey Wolf Optimization–Support …
The controlled switching is a significant method to restrain shock to the mechanism itself and power system when operating high-voltage circuit breakers.
P-003 Air Circuit Breaker NA8 NA8 Air Circuit Breaker P-004 Circuit Breaker Operating Conditions and Environmental Suitability Frame size (A): 1600, 2500, 4000, 7500 Two kinds of breaking …
Aiming at the problem of energy storage unit failure in the spring operating mechanism of low voltage circuit breakers (LVCBs). A fault diagnosis algorithm based on an improved Sparrow …
Abstract: Energy storage spring is an important component of the circuit breaker''s spring operating mechanism. A three-dimensional model of the opening spring and closing spring of …
This study attempted to establish an optimal design and perform dynamic analysis for a spring-actuated cam-linkage composite mechanism in a rated 12 kV, 25 kA …
A comparative analysis towards different types of circuit breakers to achieve efficient fault current isolation is presented. This review will drive the reader to view the current …
Therefore, a study on the strength and fatigue model of circuit breaker energy storage springs based on SVM algorithm is proposed. Based on the composition of the circuit …
As a powerful component of a circuit breaker, the reliability of energy storage spring plays an important role in the drive and control the operation of a circuit breaker motion …
Energy storage spring is an important component of the circuit breaker''s spring operating mechanism. A three-dimensional model of the opening spring and closing spring of the 126kV …
Aiming at the problem that some traditional high voltage circuit breaker fault diagnosis methods were over-dependent on subjective experience, the accuracy was not very …
Therefore, identifying and predicting the mechanical conditions of the spring operation mechanism can improve the reliability of the circuit breaker. In the present paper, the 252 kV...
This text mainly carries on the design analysis to the energy storage unit, first carries on the analysis to its working condition, including the kinetic energy calculation at the closing time, …
A fault identification method for circuit breaker energy storage mechanism, combined with current–vibration signal entropy weight characteristic and Grey Wolf Optimization–Support Vector...
Research shows that the method proposed in this article can effectively identify energy storage motor overvoltage, energy storage motor Undervoltage, transmission gear stuck, energy …
As a powerful component of a circuit breaker, the reliability of energy storage spring plays an important role in the drive and control the operation of a circuit breaker motion process.
The so-called energy storage means that when the circuit breaker is de-energized (that is, when it is opened), it opens quickly due to the spring force of the energy storage switch. Of course, …
Abstract: Spring operation mechanism is widely used in high voltage circuit breakers, and its reliability is related to the ability of the circuit breaker breaking fault current. During the life …