Circuit breaker state detection method
A circuit breaker status and detection method technology, applied in the direction of fault location, etc., can solve the problems of switch refusal to move, off-line monitoring can not reflect the running state, and minor repair control ability is not strong, so as to avoid misoperation and equipment refusal to move
Inactive Publication Date: 2021-10-26
华能沾化新能源有限公司
View PDF8 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The purpose of the present invention is to solve the accident that the switch refuses to move when it is used in the prior art. Most of the main reasons are caused by the abnormality of the control circuit and the circuit breaker body. The control ability is not strong, and the off-line monitoring cannot reflect its real operating status, and a circuit breaker status detection method is proposed
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.
[0034] refer to figure 1 , a circuit breaker state detection method, the steps are as follows:
[0035] Step 1: Set the constant value of the sudden change of current in the DC system to 20A 75mV, start the fault recorder, and collect the normal opening and closing current of the circuit breaker under normal working conditions through the sensor and the digital and analog measured units in the device under test signal and make judgments;
[0036] The judgment method is as follows: decompose the current signal into multiple intrinsic mode function components, add the current signal components to obtain the current signal after denoising, analyze the current denoising...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a circuit breaker state detection method, and relates to the field of circuit breaker calculation, and the method comprises the following steps: setting a current break variable fixed value of a DC system, starting a fault recorder, collecting a normal opening and closing current signal of a circuit breaker under a normal working condition, and carrying out the judgment; the collected current signal is converted into a digital quantity from an analog quantity through an A / D converter, and then the digital quantity is sent to a computer; according to the invention, a wiring mode that a plurality of circuit breaker control power supplies are taken from the same DC system feeder line output is utilized, the DC current of a control loop can be detected on line in each operation, major equipment hidden dangers such as opening and closing loop outlet contact abnormity, opening and closing coil fault, mechanism loop blockage and energy storage loop abnormity are pre-judged in advance, abnormity is determined, the circuit breaker and the control loop thereof are maintained in time, accidents caused by maloperation and refusal to operation are avoided, data reference is provided for equipment state maintenance, and controllable safe operation of the electrical circuit breaker equipment is realized.
Description
technical field [0001] The invention relates to the technical field of circuit breakers, in particular to a method for detecting the state of a circuit breaker. Background technique [0002] A circuit breaker is a switching device that can close, carry and break current under normal circuit conditions and can close, carry and break current under abnormal circuit conditions within a specified time. Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to their scope of use. The division of high and low voltage boundaries is relatively vague. Generally, those above 3kV are called high-voltage electrical appliances. Circuit breakers can be used to distribute electric energy, start asynchronous motors infrequently, protect power lines and motors, and automatically cut off the circuit when they are severely overloaded, short-circuited, or under-voltage. Its function is equivalent to a fuse-type switch. Combination with overhea...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/08
CPCG01R31/08
Inventor 朱明波姜伟李景波尹新罗张胜刚张文奎刘贺何国亮王建军
Owner 华能沾化新能源有限公司