Reconstruction Method of Coil Current Curve of Circuit Breaker Operating Mechanism Based on Feature Points
A technology of operating mechanism and coil current, which is applied in the direction of circuit breaker testing, etc., can solve the problems that users cannot obtain electronic data files of opening and closing coil current curves, limit the analysis of the operating state of circuit breaker operating mechanisms, and have different original data formats, etc.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0028] A method for reconstructing a coil current curve of a circuit breaker operating mechanism based on feature points, the method comprising the following steps:
[0029] (1) The waveform curve of the opening and closing coil current of the operating mechanism is obtained according to the test equipment of the operating mechanism of the circuit breaker. By analyzing the current waveform change of the opening and closing coil of the operating mechanism of the circuit breaker, the waveform curve has 6 inflection points. It is divided into 5 change stages, and the 6 inflection point data are extracted from the curve as the characteristic point data of the curve, that is, the coil current parameter { I 0 ,I 1 ,I 2 ,I 3 ,I 4 ,I 5} and the corresponding time parameter { t 0 ,t 1 ,t 2 ,t 3 ,t 4 ,t 5};
[0030] (2) Reconstruction of the current curve of the opening and closing coil of the circuit breaker operating mechanism:
[0031] By analyzing the current w...
Embodiment 2
[0039] According to the characteristic point-based method for reconstructing the current curve of the opening and closing coil of the circuit breaker operating mechanism according to claim 1, it is characterized in that: the curve reconstruction of the stage 1 is in the time period t0~t1, and the circuit breaker operating mechanism The opening and closing coils are in t 0 When the current is energized at all times, there is current passing through the coil. Since the current is not large enough at this time, the generated magnetic flux is not large enough, and the electromagnetic force generated by the electromagnet does not reach the operating value of the iron core. Therefore, the electromagnetic coil is energized at this stage, but the iron core does not The coil inductance is constant, and the coil current rises exponentially. The time of stage 1 is related to the control power supply voltage and coil resistance parameters, and its differential equation is approximately an...
Embodiment 3
[0041] According to the method for reconstructing the coil current curve of the circuit breaker operating mechanism based on the characteristic points described in Embodiment 1, the curve reconstruction in the phase 2 is during the time period t1~t2, t 1 At any time, the coil current increases to the point where the generated electromagnetic force can overcome the resistance of the iron core itself, such as gravity, motion friction and spring reaction force, and drive the iron core to move. With the movement of the iron core, the air gap of the magnetic circuit decreases continuously, and the magnetic circuit The magnetic resistance decreases and the coil reactance increases, so that the coil current decreases exponentially, and its differential equation approximates a quadratic function curve.
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com