Monitoring equipment power supply system for high voltage capacitor step-down electricity taking of tower pole line

Abstract

The invention discloses a monitoring equipment power supply system for high voltage capacitor step-down electricity taking of a tower pole line. The power supply system comprises an electricity taking module, a voltage-stabilizing module, a DC / DC conversion module and a voltage comparison control module. The electricity taking module comprises a high-voltage wire, a high-voltage capacitor, a voltage transformer and an insulator. The high-voltage capacitor is connected with the insulator in parallel. A thermal explosion type disconnector is arranged between the high-voltage capacitor and the high-voltage wire. The high-voltage capacitor is connected with the voltage transformer in series and outputs 220 v voltage on the secondary side of the voltage transformer, the voltage is converted into a small current after being transmitted to the DC / DC conversion module through the voltage-stabilizing module, and then the current is transmitted to monitoring equipment. The output end of the DC / DC conversion module is connected with a fault signal return module and the voltage comparison control module. Compared with a traditional wind-solar power storage scheme, the design cost of the power part of a tower monitoring system is greatly reduced; besides, the power supply system can monitor running for a long time, is economical and practical and thoroughly solves the problem that the electricity taking of the tower is difficult.

Description

technical field [0001] The invention relates to the technical field of step-down and power-taking of power transmission lines, in particular to a monitoring equipment power supply system for tower-pole line high-voltage capacitance step-down and power-taking. Background technique [0002] High-voltage transmission lines are one of the main components of the power system, and their safety and reliability have an important impact on the normal operation of the entire power system. In order to ensure the normal operation of the transmission line, many online monitoring devices have been installed on the lines and towers, and they can improve the safety and reliability of the transmission line and related equipment through real-time online monitoring of the line status. These monitoring equipment have very small power requirements for power supply, ranging from a few watts to tens of watts; low voltage, commonly used 5V, 12V, 24V; intermittent power requirements, most of the tim...

AI Technical Summary

Problems solved by technology

The step-down DC / DC conversion converts the voltage of several hundred volts to several thousand volts into tens of volts (12V or 24V), that is, converts high voltage (hundreds of volts to several thousand volts) and small current (tens of milliamperes) to Low voltage (12V or 24V) high current (several amps) can achieve a power output of tens of watts to hundreds of watts, but it has not made breakthroughs in voltage stability and fault error transmission, which may cause burnout of the step-down power-taking device. And the failure feedback is not timely, which is easy to cause accidents

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