Solution
Solution
New Energy Converter System
Application of Kotuo Electric Control Systems in New Energy Storage Systems
As global environmental awareness continues to rise, new energy generation technologies are being promoted and applied more extensively. Compared with traditional thermal power generation, wind power boasts advantages such as stable supply and low pollutant emissions. However, wind power is significantly affected by factors like wind speed, wind direction, and weather conditions, resulting in greater volatility and causing issues such as grid overloads and frequency fluctuations.
Energy storage technology is an important means of regulating grid load and improving energy utilization efficiency in new energy power generation. It can reduce the grid’s reliance on power generation sources, balance supply and demand on the grid, mitigate grid fluctuations, and enhance both the reliability and economic viability of power sources. Energy storage technologies primarily include battery-based storage, supercapacitor-based storage, superconducting magnetic energy storage, and mechanical energy storage.
Mechanical energy storage systems—specifically flywheel energy storage systems—offer several advantages, including rapid charge-discharge response, high charge-discharge rates, long cycle life, and high safety and reliability. By integrating a certain proportion of flywheel energy storage systems into new-energy power plants, the systems can swiftly respond to changes in grid frequency, working in synergy with wind and photovoltaic units to enhance primary frequency regulation performance, meet grid connection requirements for wind and photovoltaic power, and simultaneously improve the overall power generation efficiency of wind and photovoltaic units.
The power converter in an energy storage system enables bidirectional energy conversion between the energy storage device (whether a flywheel or a battery) and the power grid. It can perform constant-power or constant-current control according to microgrid monitoring instructions, charging or discharging the energy storage device (flywheel or battery) while simultaneously smoothing out the fluctuating output from renewable sources such as wind and photovoltaic power. This operating mode allows the power converter, during normal grid operation, to effectively utilize the energy storage device for energy storage and release, thereby enhancing the grid’s energy efficiency and stability.
The operating environment of power conversion systems in energy storage applications is characterized by rapid temperature fluctuations, significant humidity variations, and high dust levels. These conditions place higher demands on the cooling, dehumidification, and protection capabilities of the power converters. The liquid-cooled, high-protection-grade power converter developed and designed by Changsha Kete features a fully enclosed liquid cooling system that prevents any air exchange with the external environment. This design effectively addresses the harsh on-site conditions and ensures long-term, stable operation of the power converter.
In modern energy storage systems, the power conversion system is not merely an equipment for electrical energy conversion—it is also a system control hub that integrates functions such as control, safety, and monitoring. To ensure the safe operation of the entire system, the power conversion system is equipped with comprehensive electrical protection features. It provides protections against overvoltage, undervoltage, overload, overcurrent, short circuits, and overheating, enabling it to swiftly disconnect faulty circuits in the event of system abnormalities and thereby safeguard both the energy storage batteries and the power grid.
The power conversion device developed and designed by Changsha Kete features seamless grid-connected and off-grid switching control capabilities, enabling rapid and smooth transitions between different operating modes while ensuring the continuity and stability of the power system. The device is equipped with islanding detection functionality, allowing it to promptly identify islanded conditions in the event of a grid failure and initiate mode switching accordingly. This technology is particularly well-suited for applications such as microgrids and standalone power systems, effectively maintaining stable voltage and frequency on the load side even in response to grid fluctuations or faults. This operational mode enables energy storage system converters to serve as emergency power sources during grid failures, thereby guaranteeing reliable power supply.
Previous page:
Next page:
We sincerely offer you more suitable electronic control system solutions.
Contact Us
Address: Room 102, Building 11, Xinggong Science and Technology Park, No. 100 Luyun Road, Changsha High-Tech Development Zone
Mobile phone:+86-13469045968(WeChat same number)
Email:hu.huang@ketuo.com.cn