The invention provides a non-contact induction charging device comprising a current transformer, a bidirectional triode thyristor, an overvoltage protection circuit, a rectifying circuit, a BUCK circuit, a lithium battery pack, a voltage feedback control circuit and a voltage current feedback circuit, wherein a circular ring is formed by two C-shaped iron cores of the current transformer and is sleeved on a transmission line; the output end of the current transformer is connected with a relay matrix and is used for controlling the number of turns of a primary coil of the current transformer; an output of the relay matrix is connected with the bidirectional triode thyristor and is connected with the voltage feedback control circuit and the voltage current feedback circuit at the same time; the output end of the rectifying circuit is connected with the bidirectional triode thyristor through a voltage feedback control signal; and an input of the BUCK circuit is the output of the rectifying circuit and the output of the BUCK circuit is directly connected with the lithium battery pack; and the lithium battery pack is connected with the BUCK circuit through a voltage and current feedback circuit. According to the invention, when the device is used for charging a robot battery, the frequent online and offline are avoided, so that the practical applicability of the robot can be enhanced and the inspection frequency of the transmission line is improved.

Non-contact induction charging device

The invention relates to field of electric, in particular to a power supply device for taking electricity from a high-voltage side in an induction manner. The power supply device can provide a low-voltage power supply for a monitoring device arranged on a high-voltage transmission line or in a high-voltage switch cabinet. The structure of the power supply device comprises an electricity taking module, an electric energy conditioning module and an intellectual protection module, wherein the electricity taking module comprises a primary busbar, an current transformer magnetic core, a secondary coil, a sample resistor and a single-pole double-throw relay; the electric energy conditioning module comprises a rectification circuit, a point bleeder circuit, a grain wave filter capacitor and a voltage-stabilizing circuit; and the intellectual protection module comprises an STM8 singlechip, an RF (radio frequency) module and a super capacitor. The power supply device for taking electricity from high-voltage side in the induction manner has a protection function and an intelligent monitoring function, effectively protects the power supply device and a rear load from being burned, and real time monitor the power supply through the RF module, and ensures safety and stability of providing power supply for an outer load.

Power supply device for taking electricity from high-voltage side in induction manner

Insulator leakage current collecting ring and insulator leakage current collecting device

Automatic energy-extraction circuit of current transformer

The invention belongs to the field of detection of electric power systems and particularly relates to an intelligent transformer and equipment for detecting a high voltage line. The intelligent transformer comprises a global positioning system (GPS) timing positioning module, a current transformer sampling module, a power supply management module, a signal shaping module, an embedded processing module, and a radio frequency communication module, wherein the GPS timing positioning module is used for performing uniform timing positioning; the current transformer sampling module converts large current signals in the high voltage line into small current signals and outputs the small current signals; the power supply management module is used for processing the received small current signals and then is used as a power supply; the signal shaping module is used for precisely rectifying the received small current signals and outputs the rectified small current signals; the embedded processing module is used for judging and analyzing the received small current signals to form digital signals and outputs the digital signals; and the radio frequency communication module is used for realizing communication between different embedded processing modules. The intelligent transformer can be flexibly arranged on a power line in a split way, fully meets the requirements that the intelligent transformer is arranged on the high voltage and field overhead lines and also has the characteristics that real-time monitoring can be performed, judgment is correct and the intelligent transformer is safe and reliable.

Intelligent transformer and equipment for detecting high voltage line

The invention provides a power control method based CT electricity getting device of a high voltage transmission line, belonging to the field of high voltage technology. The high voltage transmission line successively penetrates through the middles of an electricity getting magnetic core and a measuring magnetic core; an electricity getting magnetic core coil and a measuring magnetic core coil are respectively positioned outside the electricity getting magnetic core and the measuring magnetic core; the electricity getting magnetic core coil is connected with an overvoltage protection and switching relay; the overvoltage protection and switching relay, a rectification filter circuit, a DC/DC module, a power management module and a voltage-stabilizing output circuit are connected; the rectification filter circuit is connected with a voltage-current detection circuit which is connected with the power management module; the power management module is connected with a farad capacitor whichis connected with the voltage-stabilizing output circuit; and the measuring magnetic core coil is connected with a sampling circuit which is connected with the power management module. The invention realizes that stable power is output within a larger current range and prevents the unsaturated situation of the magnetic cores when the current of the transmission line is large without heat-generating problems.

Power control method based CT electricity getting device of high voltage transmission line

The utility model discloses a current sensor used for grounding current detection of transmission poles and towers. The current sensor comprises an aluminum alloy casing, an ultracrystallite magnetic core, a coil, a coil lead wire, a shielded cable for signal transmission, and a signal processing device, wherein the aluminum alloy casing is divided into a left casing and a right casing in a detachable way; the ultracrystallite magnetic core is placed in the aluminum alloy casing; the coil is spirally and closely surrounded on an adapter on the ultracrystallite magnetic core, one end of the coil is installed outside the aluminum alloy casing, and a socket is installed at the other end of the coil; the coil lead wire is connected with the socket through the adapter; the shielded cable for signal transmission is connected with the socket; and the signal processing device is connected with the shielded cable for signal transmission and is used for converting the current signal acquired on the coil into square wave. The grounding current of transmission poles and towers can be accurately measured through the current sensor provided by the utility model, and the current sensor can be applied to wider measuring range and wider response frequency band.

Zhenjia Li

Papers

Power control method based CT electricity getting device of high voltage transmission line

Current sensor used for grounding current detection of transmission poles and towers