Signal follower circuit for distribution network feeder line monitoring terminal
A monitoring terminal and signal following technology, applied in the direction of DC-coupled DC amplifiers, differential amplifiers, etc., can solve the problems of weak signals, affecting the correct judgment of distribution network feeder faults, and large signal loss, so as to reduce losses and facilitate normal analysis and processing. , to ensure the effect of correct judgment
Inactive Publication Date: 2016-05-11
夏树伟
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, when the existing distribution network feeder monitoring terminal is applied, the signal detected by the sensor is weak and the signal loss is large when the signal is transmitted in the monitoring terminal, which will affect the correct judgment of the distribution network feeder fault
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
[0013] Such as figure 1 As shown, the signal follower circuit for distribution network feeder monitoring terminal includes signal input line, first resistor R1, second resistor R2, third resistor R3, fourth resistor R4, fourth resistor R4, fifth resistor R5, The first capacitor C1, the NPN transistor Q1, the operational amplifier A1 and the signal output circuit, wherein the signal input circuit is connected to the base of the NPN transistor Q1, one end of the first resistor R1 is connected to the base of the NPN transistor Q1, and the other end is grounded. One end of the second resistor R2 is connected to the emitter of the NPN transistor Q1, and the other end is grounded. The collector of the NPN transistor Q1 is connected to the power supply VCC, the first capacitor C1 is a polar capacitor, and the positive and negative poles of the first capacitor C1 are respectively connected to the emitter of the NPN transistor Q1 and the non-inverting input terminal of the operational ...
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 signal follower circuit for a distribution network feeder line monitoring terminal. The signal follower circuit comprises a signal input line, a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor, an NPN triode, an operational amplifier and a signal output line, wherein the signal input line is connected with a base electrode of the NPN triode; one end of the first resistor is connected with the base electrode of the NPN triode, and the other end of the first resistor is grounded; one end of the second resistor is connected with an emitting electrode of the NPN triode, and the other end of the second resistor is grounded; the two ends of the first capacitor are connected with the emitting electrode of the NPN triode and a non-inverting input end of the operational amplifier respectively; the two ends of the third resistor are connected with an inverting input end and an inverting output end of the operational amplifier respectively; and one end of the four resistor is connected with the output end of the operational amplifier, and the other end of the four resistor is connected with the signal output line. Through application of the signal follower circuit, a detection signal of the distribution network feeder line monitoring terminal can be amplified, so that the distribution network feeder line monitoring terminal can judge faults correctly.
Description
technical field [0001] The invention relates to the technical field of on-line monitoring of power grid distribution network feeders, in particular to a signal follower circuit for distribution network feeder monitoring terminals. Background technique [0002] With the development of society, people have higher and higher requirements for the reliability of distribution network power supply. The distribution network system is directly responsible for the power supply to users. It has problems such as weak distribution network structure, multiple distribution equipment points, and difficult operation and maintenance, which also results in a high failure rate of the distribution network. In order to quickly locate, isolate and restore power to faults. At present, the distribution network system is generally equipped with distribution network feeder monitoring terminals. The distribution network feeder monitoring terminal uses power-taking devices and sensors to detect paramet...
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 IPC IPC(8): H03F3/45
Inventor 夏树伟
Owner 夏树伟