Arc suppression and overvoltage protection device of intelligent switch
An overvoltage and arc suppression technology, which is applied to emergency protection circuit devices, emergency protection circuit devices, and circuit devices for limiting overcurrent/overvoltage, and can solve the problem of overvoltage protectors without arc suppression and harmonic elimination functions, Life and operation safety threats, single function and other issues, to reduce the cost of replacing fuses, reduce insulation breakdown short-circuit accidents and arrester explosion accidents, and reduce the workload
Inactive Publication Date: 2016-10-12
合肥羿振电力设备有限公司
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0002] In the current 3-35KW power system where the neutral point is not directly grounded, the neutral point is grounded through the arc suppression coil, or the neutral point is grounded through high resistance, because various overvoltage protectors have no arc suppression and harmonic elimination functions, or have a single function , so that it cannot effectively avoid the occurrence of accidents such as atmospheric overvoltage, single-phase intermittent arc grounding overvoltage, and ferromagnetic resonance overvoltage caused by the system between phases and phases. These overvoltages affect the life and operation of power system equipment. Security poses a certain threat
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
[0010] see figure 1 , an intelligent switch arc suppression and overvoltage protection device, which includes a vacuum circuit breaker LKJKZ capable of single-phase action, a voltage transformer PT, a three-phase combined overvoltage protector LBP, a microcomputer arc suppression controller ZK, and a high-voltage fuse RD, zero sequence current transformer LH;
[0011] The microcomputer arc suppression controller ZK includes a voltage transformer control terminal and a vacuum contactor control terminal;
[0012] The three-phase ports of the three-phase combined overvoltage protector LBP are respectively connected to the three phases of the high-voltage fuse RD and then connected to a three-phase high-voltage isolating switch, and the ground terminal of the three-phase combined overvoltage protector LBP is connected to the voltage transformer PT After grounding, the voltage transformer control terminal of the microcomputer arc suppression controller ZK is connected to the volta...
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
An intelligent switch arc suppression and overvoltage protection device relates to the technical field of electric system arc suppression and harmonic elimination. It includes vacuum circuit breakers capable of single-phase action, voltage transformers, three-phase combined overvoltage protectors, microcomputer arc suppression controllers, high-voltage fuses, zero-sequence current transformers, and three-phase combined overvoltage protectors. The phase ports are respectively connected to the three phases of the high-voltage fuse and then connected to the high-voltage isolating switch. The grounding terminal is connected to the voltage transformer and then grounded. The voltage transformer control terminal of the microcomputer arc suppression controller is connected to the voltage transformer. The vacuum circuit breaker capable of single-phase action is connected, and the three-phase ports of the vacuum circuit breaker capable of single-phase action are respectively connected to a three-phase high-voltage isolating switch, and a zero-sequence current transformer is set between the grounding terminal and the grounding point. The invention judges the fault phase and fault type according to the signal provided by the voltage transformer and displays it, has fast action speed, and effectively solves the problems of arc suppression and harmonic elimination in the overvoltage protection device.
Description
technical field [0001] The invention relates to the technical field of arc suppression and harmonic elimination in electric power systems, in particular to a microcomputer arc suppression and harmonic elimination and overvoltage protection device. Background technique [0002] In the current 3-35KW power system where the neutral point is not directly grounded, the neutral point is grounded through the arc suppression coil, or the neutral point is grounded through high resistance, because various overvoltage protectors have no arc suppression and harmonic elimination functions, or have a single function , so that it cannot effectively avoid the occurrence of accidents such as atmospheric overvoltage, single-phase intermittent arc grounding overvoltage, and ferromagnetic resonance overvoltage caused by the system phase-to-phase and phase-to-ground. Security poses a certain threat. Contents of the invention [0003] The purpose of the present invention is to provide an overv...
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): H02H9/08H02H9/04
CPCH02H9/08H02H9/04
Inventor 武行峰
Owner 合肥羿振电力设备有限公司