Signal following processor of monitor terminal for distribution network feeders
A monitoring terminal and signal following technology, which is applied in the direction of DC-coupled DC amplifiers and differential amplifiers, can solve the problems of weak signals, large signal losses, and affecting the correct judgment of distribution network feeder faults, so as to reduce losses and ensure correct judgments. Facilitate the effect of normal analysis and processing
Inactive Publication Date: 2016-06-01
夏树伟
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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
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[0014] Such as figure 1 As shown, the signal follower processor of the distribution network feeder monitoring terminal includes a signal input line, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fourth resistor R4, a fifth resistor R5, a A capacitor C1, a second capacitor C2, an NPN transistor Q1, an operational amplifier A1 and a 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 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 inpu...
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The invention discloses a signal following processor of a monitor terminal for distribution network feeders. The signal following processor comprises a signal input circuit, a third resistor, a fourth resistor, a first capacitor, a second capacitor, an NPN audion, an operational amplifier and a signal output circuit. The signal input circuit is connected with a base electrode of the NPN audion. A collector of the NPN audion is connected with a power supply. Two ends of the first capacitor are connected with an emitting electrode of the NPN audion and an in-phrase input end of the operational amplifier.One end of a parallel branch composed of the second capacitor and the third resistor is connected with an inverted input end of the operational amplifier and the other end thereof is connected with an output end of the operational amplifier. One end of the fourth resistor is connected with an output end of the operational amplifier and the other end thereof is connected with the signal output circuit. The signal following processor of the monitor terminal for distribution network feeders has following beneficial effects: during application, loss of signal transmission for the monitor terminal for distribution network feeders is reduced; and detection signals of the monitor terminal for distribution network feeders are amplified so that accurate adjustments on failure diagnosis can be made by the monitor terminal for distribution network feeders.
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 processor of a distribution network feeder monitoring terminal. 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 param...
Claims
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IPC IPC(8): H03F3/45
Inventor 夏树伟
Owner 夏树伟