Abstract:

Building ubiquitous power internet of things (UPIoT) is a necessary means to achieve the goal of energy transformation. Starting from the development history and problems of power system, the significance of UPIoT was discussed, and the implementation strategies and possible problems were put forward. In order to realize the energy transformation, the installed capacity of renewable energy such as wind, photovoltaic (PV) and so on is increasing. The randomness of these sources of energy causes tremendous pressure on the power balance of power systems, sometimes having to abandon part of electricity from wind farms and PV. In order to maintain the stable operation of power system and improve the utilization rate of wind power and photoelectricity, it is necessary to control controllable load and decentralized generation. Therefore, it is necessary to connect controllable load and decentralized power generation with the internet to form a UPIoT. Conventional power plants, large-scale wind farms, PV stations have been connected to dispatching center, and can be directly controlled. Therefore, the main task of UPIoT is to connect load and distributed generation, especially controllable load. Electric vehicles are the easiest controllable loads, followed by water heaters, electric boilers and air conditioners. Utilizing the UPIoT, coordinated control of wind power and PV, controllable load, decentralized power generation, etc., can improve the utilization rate of wind power and PV, and achieve the goal of energy transformation.

Key words: ubiquitous power internet of things (UPIoT), power system, internet of things, controllable load, electric vehicle, peak load shaving, energy transformation