Recently, Guangzhou Zhiguang Electric Power Technology Co., Ltd. (“Zhiguang Electric Power Technology”) successfully delivered its independently developed grid-forming renewable energy and energy storage power plant grid-connection testing system to Guangdong Zhongzhi Testing Technology Co., Ltd., a subsidiary controlled by Shenzhen SEG Group under Shenzhen state-owned assets. The delivery marks a new milestone in cooperation between the two parties in the field of grid-connection testing for renewable energy and energy storage systems, providing robust technical support for the safe and reliable integration of renewable energy across Guangdong Province and nationwide.
Integrated Design for Flexible Testing Scenarios
The delivered grid-connection testing system adopts a containerized, integrated design, combining high mobility with strong on-site adaptability. It is suitable for a wide range of application environments, including wind farms, photovoltaic power plants, and energy storage stations, enabling rapid deployment and immediate execution of grid-connection performance tests.
This design significantly shortens equipment mobilization and installation timelines while substantially reducing site modification requirements and operational costs for users. It fully embodies the concept of “testing that follows the project,” helping customers achieve flexible, cost-effective, and efficient grid-connection validation and fault analysis.
Comprehensive Grid-Connection Performance Testing Capabilities
Leveraging Zhiguang Electric Power Technology’s deep expertise in high-power power electronics, the grid-connection testing system is built around a four-quadrant variable-frequency power supply. It can accurately simulate a wide range of grid operating conditions and fault scenarios, enabling comprehensive testing functions including high- and low-voltage ride-through, frequency adaptability, power quality analysis, primary frequency regulation, and simulated inertia response.
The system supports full fault reproduction and reverse analysis, seamless switching between strong and weak grids, and continuously adjustable short-circuit ratios. It meets the testing requirements of both grid-forming and grid-following energy storage systems and supports grid-connection testing for wind power, photovoltaic, energy storage, SVG, and other renewable energy equipment, highlighting Zhiguang’s leading capabilities in power electronics system integration and simulation-based testing.
Recognized Excellence Driving a Secure Energy Future
Zhiguang Electric Power Technology continues to drive innovation in this field. Its products have received multiple authoritative recognitions, including First Prize in the 2024 MIIT Innovation Challenge and designation as a Guangdong Famous High-Quality High-Tech Product in 2023. The solutions have been deployed at scale across Guangdong, Hunan, Hebei, Fujian, Yunnan, Chongqing, Shandong, Ningxia, and other regions, providing strong support for the safe and stable operation of renewable energy power plants while enhancing grid resilience and frequency regulation capabilities.
As a professional third-party testing organization, Guangdong Zhongzhi Testing Technology Co., Ltd. will further strengthen its service capacity and technical competence in renewable energy grid-connection testing through the introduction of Zhiguang’s advanced testing system.
Looking ahead, Zhiguang Electric Power Technology will continue to collaborate with industry partners to promote the standardization and systematic development of renewable energy grid-connection technologies, contributing to China’s energy transition and the construction of a new-generation power system.
