Power facility for remote control
A power facility for remote control includes: an analog sensing value reception unit that collects an internal analog sensing value of the power facility; a digital conversion unit that converts the analog sensing value into digital information; and a communication unit that transmits the digital information to an external remote control device by using one optical path. Therefore, by allowing a plurality of analog sensing values from the power facility to be transmitted to the remote control device by using one optical path, transmission efficiency can be increased, and by converting a plurality of analog sensing values of the power facility into digital information and transmitting the digital information with an asynchronous frame, the plurality of analog sensing values can be efficiently transmitted through one optical path without a separate synchronous signal.
1. A semiconductor transformer for remote control, comprising:
a high-voltage unit that converts an input low-frequency high-voltage AC into a high-frequency high-voltage AC voltage;
a step-down unit that converts the high-frequency high-voltage AC voltage into a high-frequency low-voltage AC voltage by stepping down the high-frequency high-voltage AC voltage;
a low-voltage unit that rectifies the high-frequency low-voltage AC voltage, charges the rectified low-voltage DC voltage, and outputs the rectified low-voltage DC voltage;
an analog sensing value reception unit that collects an internal analog sensing value of the semiconductor transformer;
a digital conversion unit that converts the analog sensing value into digital information; and
a communication unit that transmits the digital information to an external remote control device by using one optical path,
wherein the communication unit transmits the digital information with an asynchronous frame,
wherein the asynchronous frame includes:
a preamble portion providing synchronous information;
a control operation portion providing control information;
a data portion providing the digital information; and
a checksum portion checking an error during transmission of the frame.
2. The semiconductor transformer for remote control according to claim 1 , wherein the analog sensing value is at least one of an internal voltage value, an internal current value, and an internal resistance value of a power facility.
3. The semiconductor transformer for remote control according to claim 1 , wherein the high-voltage unit includes:
a high-voltage storage unit that converts the input low-frequency high-voltage AC into a high-voltage DC to charge the high-voltage DC;
an AC conversion unit that converts an output of the high-voltage storage unit into a high-frequency high-voltage AC;
a high-voltage driving unit that drives a transistor inside the high-voltage storage unit and the AC conversion unit; and
a high-voltage communication unit that receives at least one analog sensing value among a voltage value, a current value, and a resistance value of the high-voltage storage unit and the high-voltage driving unit, converts the analog sensing value into the digital information, and performs the communication with the remote control device by using the digital information.
4. The semiconductor transformer for remote control according to claim 1 , wherein the low-voltage unit includes:
a low-voltage storage unit that rectifies the input high-frequency low-voltage AC as an output of the step-down unit and charges and outputs a low-voltage DC;
a low-voltage driving unit that drives a transistor inside the low-voltage storage unit; and
a low-voltage communication unit that receives an analog sensing value of at least one of an internal voltage value, an internal current value, and an internal resistance value of the low-voltage storage unit and the low-voltage driving unit, converts the analog sensing value into the digital information, and communicates with the remote control device.
5. The semiconductor transformer for remote control according to claim 3 ,
wherein the voltage value includes an input voltage value of the high-voltage storage unit and a charging voltage value of a capacitor inside the high-voltage storage unit,
wherein the current value includes an input current value of the high-voltage storage unit, and
wherein the resistance value includes a resistance value of a negative thermal coupler (NTC) inside the high-voltage driving unit.
6. The semiconductor transformer for remote control according to claim 4 ,
wherein the voltage value includes an output voltage value of the low-voltage storage unit and a charging voltage value of a capacitor inside the low-voltage storage unit,
wherein the current value includes an output current value of the low-voltage storage unit, and
wherein the resistance value includes a resistance value of a negative thermal coupler (NTC) inside the low-voltage driving unit.