Architecture, Integrated Gateway Design, And Performance Evaluation for High Concurrency Access of Power Internet of Things

Table 1

Various potential devices accessing power IoT.

Device	Communication protocol	Data content	Area
Distributed wind-mill generator	Message queuing telemetry transport (MQTT) constrained application protocol (CoAP)	Blade angle and rotate speed, temperatures of battery box, axle box, and motor	Source
Distributed wind-mill inverter	MQTT, CoAP	Inverter status	Source
Distributed photovoltaic generator	MQTT, CoAP	DC and AC power, component temperature, daily power output, radiation value, dispersion rate, bus voltage etc.	Source
Bus converter	MQTT, CoAP	Forward active power, backward active power, forward reactive power, backward reactive power, and power factor	Source
User energy gateway	Power IoT, MQTT, CoAP	Messages of coordination command and date exchange among devices	Load
User energy gateway	Power IoT, MQTT, CoAP	Messages of coordination command and date exchange among devices	Load
Power collection terminal	Power IoT, MQTT, CoAP	Voltage, current, electric power, frequency, and power quality data	Load
Power monitoring terminal	Power IoT, MQTT, CoAP	Switch status	Load
Low voltage phasing device	Power IoT, MQTT, CoAP	Phase sequence	Load
Co-control device of charging station	Power IoT, MQTT, CoAP	Voltage, current, electric power, frequency, temperature, and operating status	Load
Energy storage centralized monitoring device	Optical fiber, industrial network protocol	Voltage, current, electric power, frequency, temperature, and state of charge	Storage
Distributed energy storage	Power IoT, MQTT, CoAP	Voltage, current, electric power, frequency, temperature, and state of charge	Storage