In-depth discussion of energy storage battery technology, battery energy storage value evaluation research and battery energy storage device applications, etc.
Against the background of increasingly tense global environmental protection and resource pressures, China’s energy situation is particularly severe. As a new energy technology with great potential and mature technology, wind power has an increasing application scale. The installed capacity of wind power is 150 million kw. The adverse impact of large-scale wind farm grid connection […]
Reduce the cost of distribution transformer loss The loss of the transformer mainly includes no-load loss and short-circuit loss (load loss). No-load loss, also known as iron loss, is the loss generated when the magnetic flux changes periodically due to the excitation current in the iron core under the rated voltage of the transformer, so […]
The user-side battery energy storage device has been widely used in Japan, the United States and Europe, and its applications are mostly LL+UPS mode and LL+EPS mode. Taking sodium-sulfur batteries as an example, from 1992 to 2007, there were a total of 196 projects of sodium-sulfur battery energy storage applications in the world, with an […]
Investment cost analysis of energy storage device The electrical schematic diagram of the energy storage device is mainly composed of grid connected equipment (including AC side switch and transformer), rectifier / inverter equipment and battery pack. Of course, there is a secondary control system, so we need to analyze the investment cost of each part. […]
低储能套利与储能设备高发 During peak load regulation of the power grid, it is necessary to shut down some thermal power units or reduce the output of thermal power units in the low peak period, resulting in the increase of unit coal consumption and unit start-up and shutdown costs. However, in the peak period, it is necessary to […]
After the energy storage link is introduced into the system, it can not only improve the reliability of system operation and the quality of power supply, but also promote the application of renewable energy. It can also more effectively utilize power equipment by smoothing the load, reduce line losses, and improve the economy of grid […]
In the competitive power market environment, the power grid company considers how to reduce the cost of power grid operation, maintenance, upgrade and addition as much as possible while providing safe, reliable and high-quality power services, so as to provide users with “high-quality and low-cost” power electrical energy. Energy storage technology is a means to […]
Making full use of wind energy to maximize the performance of equipment and reduce the consumption of traditional energy has become the primary goal of wind power plants after completion. However, the change of wind speed has a great influence on the output of the wind farm. The power grid must continuously, safely, reliably and […]
Among various energy storage technologies, pumped hydro energy storage and compressed air energy storage are more suitable for grid peak regulation; battery energy storage and phase change energy storage are more suitable for small and medium-scale energy storage and user demand side management; superconducting electromagnetic energy storage and Flywheel energy storage is more suitable for […]
Although wind power is an environmentally friendly and renewable new energy source, its output is greatly affected by natural conditions and has strong intermittent and fluctuation. In addition, the variation rule of wind farm output is not consistent with the variation rule of system load. In order to suppress the fluctuation of the wind farm […]