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Fault diagnosis method for energy storage mechanism of high voltage circuit breaker based on CNN characteristic matrix constructed by sound-vibration
The energy storage motor current signal directly reflects the energy storage state of the circuit breaker operating mechanism. Reasonable use of this signal can achieve rapid detection of the operating mechanism and then evaluate the operating status of the early warning circuit breaker in advance, providing support for the safe operation of the
5 Conclusions. This paper presents a method for monitoring induction motor overload using audio signals and artificial neural network. Audio signals are recorded by a microphone placed near an induction motor to monitor its overload. A feature set (including F0, MFCC, and BER) and six classification models are evaluated.
978-1-4799-8805-1/15/$31.00 ©2015 IEEE Abstract — This paper presents the comparison between mechanical circuit breaker and solid state circuit breaker under abnormal conditions for low voltage
The invention discloses a system for evaluating the abnormal state of an energy storage spring of a circuit breaker, which comprises: the mechanical sensor is used for measuring the stress value of the energy storage spring in real time; the data acquisition module
Combining the sound-vibration signal with the deep learning algorithm can accurately identify multiple faults in different scenarios. 1) The combination of sound
Low Voltage Circuit Breaker. Circuit breakers are the "final control elements" of the electric power industry, akin to control valves in the process industries. They are strictly on/off devices, used to make and break connections under load in power systems. Circuit breakers automatically open when dangerous circuit conditions are detected.
Abnormal Bifurcation of the Double Binding Energy Differences and Proton-Neutron Pairing: Nuclei Close to N = Z Line from Ni to Rb Y. P. Wang, Y. K. Wang, F. F. Xu, P. W. Zhao, and J. Meng Phys. Rev. Lett. 132, 232501 – Published 4 June 2024
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
This article presents the design of a motor/generator for a flywheel energy storage at household level. Three reference machines were compared by means of finite element analysis: a traditional iron-core surface permanent-magnet (SPM) synchronous machine, a synchronous reluctance machine (SynchRel), and an ironless SPM
A fault identification method for circuit breaker energy storage mechanism, combined with the current–vibration signal entropy weight characteristic and
According to the manufacturer''s data, the standard values of the evaluation parameters of the energy storage motor in this paper are energy storage time: 25.0 s, average current: 1.02 A, peak current: 6.61 A. According
The failure of the air circuit breaker to break normally may be due to the following failures. 1. Button failure. Mechanical failure of the button or poor contact of the conductor will cause the trip circuit to be blocked, which will lead to the deactivation of the shunt trip coil, the armature can not be pull in and the air circuit breaker can
reason for the break of the energy storage spring of the circuit breaker in a 110kV substation are (closing) coil, the energy storage motor and the closing lock coil. In this paper, in order
1. The power supply is not connected. At this time, it should be checked whether the power supply on the terminal block of the switch cabinet is in, and whether the control switch 2ZK of the energy storage circuit is in the closing position. 2. The energy storage limit switch S1 is damaged.
Based on the detection of abnormal sound of equipment based on self-supervision, it can help to solve the detection method of abnormal sound, extract artificially constructed algorithms, identify the characteristics of sound, and detect abnormal sound. In this process, the human factor is relatively large. Due to human factors, the generality of the
The VS1 vacuum circuit breaker energy storage motor can be said to be the heart of the entire circuit breaker. It provides the power for the entire energy storage series, so the energy storage motor is very important.The energy storage motor may be damaged due to long use time or wiring reasons.
By mixing the normal sound with the unusual sound, it can be assumed that the engine sound is abnormal during the operation of the diesel generator or the abnormal sound occurs in the field. As shown in Table 4, new abnormal sound samples were created by mixing the normal sounds of diesel generators A and B and 5 unusual
The performance state evaluation method of circuit breaker energy storage spring mainly judges its performance state indirectly by measuring the pre-tightening force or pre-pressure of the spring. However, there may be some errors in this indirect measurement method, which will affect the accuracy of the evaluation results. Therefore, the performance state
Currently, the closed-set recognition algorithm is the primary research method for switchgear circuit breaker fault diagnosis. For real-time acquisition of the operation of a long voice signal from a switchgear circuit breaker, a significant number of silent signal segments and non-circuit breaker action sound signals are present; these types of signals will cause
The reliable storage of spring potential energy is a prerequisite for ensuring the correct closing and opening operations of a circuit breaker. A fault identification method for circuit breaker energy storage mechanism, combined with the current-vibration signal entropy weight characteristic and grey wolf optimization-support
Energy storage spring of Circuit breaker is easy to failure, which will affect the normal operation of power system. Evaluating the severity of the fault of the energy storage spring can eliminate the fault in time and prevent its deterioration. In order to accurately evaluate the fault severity of energy storage spring, a fault severity
—The traveling wave reflection method is proposed to locate the inter-turn short circuit fault of the circuit breaker energy storage motor coil. The capacitance and inductance matrices of the
PDF | On Jul 9, 2019, Ting Ni and others published Research on Abnormal Identification Technology of Circuit Breaker extinction based on wavelet analysis | Find, read and cite all
Abstract. The capacitive inductance parameters of the energy storage motor windings were calculated by finite element method, and the high-frequency
Circuit reliability of the energy storage motor is improved, the accident of damage to theEnergy storage motor due to the failure can be reduced, and a medium-voltage distribution system is more reliable in operation. The invention discloses a vacuum circuit breaker energy storage motor protection circuit which comprises an energy
Fault Diagnosis Method of Energy Storage Unit of Circuit Breakers Based on EWT-ISSA-BP Tengfei Li 1, Wenhui Zhang 1, Ke Mi 1, Qingming Lin 1, Shuangwei Zhao 2,*, Jiayi Song 2 1 Puneng Electric Power Technology Engineering Branch, Shanghai Hengnengtai Enterprise Management Co., Ltd., Shanghai, 200437, China 2 School of Electrical
The basic requirements for the grid connection of the generator motor of the gravity energy storage system are: the phase sequence, frequency, amplitude, and phase of the voltage at the generator end and the grid end must be consistent. However, in actual working conditions, there will always be errors in the voltage indicators of the
of the energy storage motor of the spring mechanism of the circuit breaker as an example, a sample of 2.5s long is randomly selected to show the MFCC vector and the medium time MFCC vector of the sample in the form of
Abstract: The energy storage indicator light of 6kV vacuum circuit breaker in a power plant is not on when it is in operation, which makes the sound of continuous rotation of energy storage motor locally, but the energy storage indicator light of the circuit breaker
A circuit breaker is an electrical switching device designed to protect an electrical circuit from damage caused by excessive current flow. Its primary function is to interrupt the circuit''s current flow when it detects an overcurrent or a fault condition, preventing potential fire hazards, equipment damage, and electrical system failures.
Abstract. The capacitive inductance parameters of the energy storage motor windings were calculated by finite element method, and the high-frequency equivalent model of the winding was established based on ATP-EMTP.
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
1. A humming sound. When you hear a humming sound coming from your circuit breakers, it could indicate a loose connection or a faulty breaker. It''s important to address this issue promptly to prevent any potential electrical hazards. Check if the humming sound is coming from a specific breaker. If so, turn off the breaker and
In order to improve the classification accuracy of loudspeaker abnormal sounds, this paper proposes a method based on time-varying specific loudness weighted by energy entropy and principal component analysis. This method simulates human auditory perception mechanism to process loudspeaker sound response signal to obtain more effective
Fault diagnosis method for energy storage mechanism of high voltage circuit breaker based on CNN characteristic matrix constructed by sound-vibration signal September 2019 Journal of
PDF | The performance state evaluation method of circuit breaker energy storage spring mainly judges its performance state of motor and 2023 4th International Conference on Electrical
A fault identification method for circuit breaker energy storage mechanism, combined with the current-vibration signal entropy weight characteristic and
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