—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...
—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...
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.
1 Introduction. As a most commonly applied equipment, circuit breakers (CBs) play a significant role in power system control and protection [].They can control the operations of parts of the transmission lines or equipments to meet the requirements of the power system so as to protect the power system [2, 3].Several special signals can reflect the status of CBs, i.e. coil …
When the circuit breaker coil current reaches the set threshold, the high-speed camera is triggered to capture the action or energy storage process of the circuit breaker operating mechanism spring; Image preprocessing are used to improve the quality of the image to be analyzed, which reduces the interference of field light change and camera electronic noise on …
Research on inter-turn short circuit fault location of SF6 circuit breaker energy storage motor coil based on traveling wave reflection method; Simulation research on the pre-strike characteristics of SF6 circuit breaker
This study proposes a coil current model and an energy storage motor current (ESMC) model of circuit breakers (CBs) with spring operated mechanism. To make sure the signals generated by the models are identical to the actual ones, this study proposes a stochastic optimisation algorithm to optimise the model parameters. Based on the data ...
—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 …
Locked electromagnet coil (optional) Energy-storage motor Resistance Closing trip coil Notes: 1. The circuit breaker is at the test position, is opened and at the non-energy-storage state. 2. The polarities marked in the dashed box shall be the same during the DC power operation, and the motor shall be wired according to the polarity shown in ...
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 Search Algorithm (ISSA) optimized Backpropagation Neural Network (BPNN) is proposed to improve the operational safety of LVCB.
A fault identification method for circuit breaker energy storage mechanism, combined with the current-vibration signal entropy weight characteristic and grey wolf optimization-support vector machine (GWO-SVM), is proposed by analyzing the energy conversion and transmission relationship between control loop, motor, transmission …
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.
At a slower speed, the circuit breaker may not allow fault current isolation. To solve this problem, the Thomson coil was added to the circuit. It operates immediately in a low-impedance fault ...
A fault identification method for circuit breaker energy storage mechanism, combined with the current-vibration signal entropy weight characteristic and grey wolf …
—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...
This study proposes a coil current model and an energy storage motor current (ESMC) model of circuit breakers (CBs) with spring operated mechanism. To make sure the signals generated by the models are identical …
As vacuum circuit breakers are widely used in the power industry, due to different manufacturers, some vacuum circuit breakers have better performance, less overhaul and maintenance workloads, and high power supply reliability; some vacuum circuit breakers have poor performance and compare problems. Many; some vacuum circuit breakers have …
Abstract: 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. A non-contact testing method of spring deformation characteristics based on image matching tracking technology is proposed: the high-speed camera is utilized to capture the image …
quently, fatigue f ailure of circuit breaker energy storage. spring has drawn a series of attentions [16], [17]. Surface . decarburization has been proved to influence the service per-formance of ...
A non-contact testing method of spring deformation characteristics based on image matching tracking technology is proposed: the high-speed camera is utilized to capture the image sequence of energy storage spring extension-contraction process, and the first coil of the movable end of the spring is taken as the matching target. Then, the ...
The energy storage unit is one of the most critical design points in the overall design of the operating mechanism and directly affects the reliability of the energy storage of the operating …
This study proposes a coil current model and an energy storage motor current (ESMC) model of circuit breakers (CBs) with spring operated mechanism. To make sure the signals generated by the models are identical to the actual ones, this study proposes a stochastic optimisation algorithm to optimise the model parameters. Based on the ...
Research on inter-turn short circuit fault location of SF6 circuit breaker energy storage motor coil based on traveling wave reflection method; Simulation research on the pre …
All Siemens Energy high-voltage circuit breakers are designed in a well proven modular platform concept. This leads to a wide variety of breaker types and strong flexibility with regard to various applications according to our customers'' requirements as well as high availability at eminently competitive price.
A non-contact testing method of spring deformation characteristics based on image matching tracking technology is proposed: the high-speed camera is utilized to capture the image …
This study proposes a coil current model and an energy storage motor current (ESMC) model of circuit breakers (CBs) with spring operated mechanism. To make sure the signals generated by the models ...
—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 …
The energy storage unit is one of the most critical design points in the overall design of the operating mechanism and directly affects the reliability of the energy storage of the operating mechanism.
This study proposes a coil current model and an energy storage motor current (ESMC) model of circuit breakers (CBs) with spring operated mechanism. To make sure the …
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 Search Algorithm (ISSA) optimized Backpropagation Neural Network (BPNN) is proposed to …
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