Potential Transformer with Carrier Communication Interface

Abstract

The invention relates to a voltage transformer provided with a carrier communication interface. The voltage transformer comprises a voltage transformer body (2), wherein carrier communication devices (3) are arranged on one or two high-voltage insulating sleeves (1) of the voltage transformer body (2); each carrier communication device (2) consists of a coupler (4), a carrier communication module (5) and an alternating current to direct current conversion module (6); two alternating current input ends of the coupling direct current to alternating current conversion power supply module (6) are connected with the two ends of the secondary side of the voltage transformer respectively; and the two direct-current output ends of the coupling direct current to alternating current conversion power supply module (6) are connected with the power supply input end of each carrier communication module (5). Due to the adoption of the voltage transformer, a carrier wave communication device is not required to be charged separately by using an external power supply; and the voltage transformer is simple in structure, and contributes to saving the installation cost and lowering the complexity of a device. A coupler and a carrier communication module are designed in a carrier communication device and are arranged on a high-voltage insulating sleeve of the voltage transformer, so that the system structure is simplified, and space is saved.

Description

technical field [0001] The invention relates to electrical equipment, in particular to a voltage transformer. Background technique [0002] Power carrier communication is a carrier communication method that uses high-voltage transmission as a transmission path, and is used for dispatching communication, telecontrol, protection, production command, administrative business communication and various information transmissions of the power system. Power carrier communication consists of power line carrier machine, power line, and coupling equipment. Coupling equipment includes line traps, combined filters, coupling capacitors, high-frequency cables, etc. Coupling methods include phase-ground coupling, phase-phase coupling, hybrid coupling, etc. The coupling capacitor is connected between the combined filter and the high-voltage wire. Levels vary. The role of the coupling capacitor is to isolate the carrier equipment from the high voltage, operating overvoltage and lightning ove...

AI Technical Summary

Problems solved by technology

At present, in the power carrier communication of 10KV voltage transformer, the coupling capacitor is connected to the power line through phase-ground coupling, and the carrier communication module needs to be powered by an external power supply alone, and the structure is complicated, which not only increases the installation cost, but also increases the installation cost. the complexity of

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