Automatic power load balancing system has been used in European countries, especially Germany, Denmark, Finland, the Netherlands and other countries for more than 20-30 years, and has been playing an important role in the construction of smart grid in Europe.
However, in China, the research on this industry is still in the initial stage of being unsystematic and irregular. Due to the rapid development of domestic electric power industry in the past two decades, China has made remarkable achievements in electric power construction, especially in new energy construction in the last decade. At the same time, it also exposes many contradictions such as power grid acceptance, consumption and balance. In addition to the constraints of domestic power system, the lack of good smart grid and rebalancing system technology is also one of the main reasons.
Using high-power electrode boiler system to automatically adjust the power grid balance is very suitable for this unstable demand side, especially when new energy sources need to absorb more power grids, especially wind power, photovoltaic photothermal, biomass energy, tidal energy and other power plants, as well as various small distributed energy sources.
It is especially suitable for areas in northern China that need central heating. On the one hand, unstable electricity can be used for urban central heating, and steam supply can be carried out in strong winds in winter, thus greatly reducing coal-fired boilers and carbon emissions and improving air quality. At the same time, in the spring, autumn and Xia San seasons, it can also meet the needs of other production and domestic steam.
Among the existing technologies, the fastest adjustment technology in Europe is to adjust the load of the power grid once every 20-30 seconds.
The fully automatic power grid load regulation system developed by the company has reached the level of 4 milliseconds regulation, which represents the most advanced technical level in the world.
This automatic load regulation system is mainly divided into six parts: main engine system, heat exchange system, control system, variable constant pressure buffer system, auxiliary engine system and boiler room building. When in use, it is suitable for the access conditions of isolated network, microgrid or ordinary power grid. The specific capacity and selection are closely related to the fluctuating load capacity and working conditions to be adjusted, and need special design and customization.
Take the load automatic regulation system of the self-provided power plant of Rizhao Iron and Steel Plant in Shandong Province built by Ruite Ai (Beijing) Energy Technology Co., Ltd. as an example: Rizhao Iron and Steel Plant, as the largest private iron and steel enterprise in China, needs a lot of electricity for steelmaking, but the power supply capacity of the existing power grid is insufficient, so a generator set with an installed capacity of 2× 350,000 kilowatts was built and operated in its own isolated network. Because steel mills consume a lot of electricity and the impact load changes rapidly, if the self-provided power plant cannot automatically balance the load, the power plant will not be able to generate electricity normally. Through analysis, the fluctuating load is 1.5 million kilowatts, and the fluctuating frequency is 4-5 milliseconds. Therefore, we have designed the most advanced system in the world so far to balance the violent fluctuation of power grid, and the trial operation of 1.68 is successful. The total installed capacity is 4×40MW boiler, and the balance time is 4ms. Load balancing projects include civil engineering, power distribution, etc. , power supply voltage and current quality will also be affected.