Contemporary China's expressways are developing in the direction of intelligence, and the scientific and technological concept of "smart highways" is gradually formed. China's highways have a cumulative mileage of 1550,000 kilometers is the first in the front, so the demand for energy is increasing day by day, and the growth rate of carbon emissions is also very obvious. The initial construction task is to improve the level of highway operation and management and travel service through information exchange and sharing, data fusion and mining, and realize the informatization and intelligence of provincial highway monitoring and management, emergency command, auxiliary decision-making, business handling, travel guidance and other services. The future development trend is to introduce vehicle-road communication technology to realize the coordination of people, vehicles, roads and the environment, and to adopt clean energy alternatives to reduce carbon emissions. We can consider establishing a photovoltaic energy storage power station for the expressway service area, with the help of the energy storage system through photovoltaic panels, relying on the smart energy management platform, it can store free time electric energy like a "power bank", and release electric energy when needed, the process is completely green and carbon-free, making an indispensable contribution to the goal of "carbon peak".
Accuray photovoltaic power generation monitoring solution
ACREL photovoltaic monitoring system platform can carry out centralized monitoring, unified scheduling, and unified operation and maintenance of users' photovoltaic power generation and electricity consumption, so as to meet the requirements of users for reliable, safe, economical, efficient and orderly electricity consumption. Provide operation and maintenance services to users, realize energy interconnection, information exchange, and break information silos; According to the hierarchical management of the load importance of electrical equipment, the peak staggered and orderly power consumption.
The structure diagram of the photovoltaic monitoring system mainly uses the anti-islanding protection device to collect the signals such as grid-connected voltage, frequency and incoming current of the power grid, and when the islanding phenomenon occurs, the grid-connected point is quickly cut off to make the station quickly separated from the power grid side. At the same time, it is equipped with a power quality monitoring device to monitor voltage harmonics, voltage fluctuations and flicker, frequency deviations, voltage imbalances, voltage sag and short-term interruptions. Through the use of these devices in photovoltaic grid-connected cabinets, the reliable operation of the power grid is guaranteed.
Several modes of photovoltaic power generation:Self-generation and self-consumption, surplus power grid mode; Fully spontaneous mode; Full Internet mode,At present, the two modes of self-consumption and self-use of surplus electricity to the Internet and the former completely self-use are more common, and all spontaneous self-use needs to consider the problem of preventing backflow.
System case sharing
This monitoring platform has a comprehensive dashboard to overview the number, installed capacity, and real-time power generation power of all photovoltaic power stations; View the subsidized electricity price through the power station status interface, monitor the on-site environment in real time, and access the weather station data (irradiance, temperature and humidity, wind speed and other environmental parameters), and display the current number and basic parameters of the inverter of the photovoltaic power station; Query the basic parameters of the inverter, DC side voltage and current data, AC voltage, current, active power, frequency, power factor and other electrical parameter information through the inverter page; The influence of irradiance and temperature on photovoltaic power generation was analyzed by inverter curve.
System platform function interface display: