whkdzw027@qq.com
+86 15827230221
+86 027-86861986
Introduction: In June 2026, the Zhongmei Yongcheng 2×1000MW high-efficiency ultra-supercritical unit project reached a critical milestone – both main transformers were successfully positioned in place. Providing core equipment support for this milestone was TBEA Shenyang Transformer Group Co., Ltd. And during the handover testing phase following transformer installation, testing equipment supplied by Wuhan Kedi Zhongwei Electric Co., Ltd. provided professional technical support for the smooth acceptance of the equipment.
Recently, Kedi Zhongwei reached a cooperation agreement with TBEA Shenyang Transformer Group to supply a batch of transformer testing instruments for the Zhongmei Yongcheng power plant project, including DC resistance testers, turns ratio testers, winding deformation testers, insulation resistance testers, and other equipment, comprehensively serving the installation, commissioning, and handover testing of the project's main transformers.
The Zhongmei Yongcheng 2×1000MW high-efficiency ultra-supercritical unit project is located in the Yongcheng Industrial Cluster Zone, Shangqiu City, Henan Province. It is one of the first national pilot projects for the "dual linkage" of coal and electricity, and coal-electricity with renewable energy. The project is a major initiative jointly promoted by Zhongmei Group and Shangqiu City, and is also one of the key projects of Henan Province.
This project is the core component of the Zhongmei Yongcheng 5000MW integrated wind-solar-thermal-storage energy base, with the entire base representing a total investment of approximately RMB 27.5 billion. The thermal power component plans to construct two 1,000MW once-reheat high-efficiency ultra-supercritical deep-peaking coal-fired generating units, with simultaneous supporting construction of high-efficiency desulfurization, denitrification, dust removal, and advanced desulfurization wastewater treatment facilities. In addition, the base also plans 2,000MW of wind power, 1,000MW of photovoltaic power, and a 900MW/1800MWh shared energy storage station.
Since its launch in 2024, the project has progressed rapidly: foundation excavation began on January 16, 2025, foundation pouring was completed in February, and the first section of the cooling tower shell construction started on June 10; the first concrete pouring was successfully completed in August 2025; by the end of 2025, the "four completions" goals – boiler house, main plant building, chimney, and cooling tower – were all achieved. In 2026, the project has fully transitioned from civil construction to the critical phase of equipment installation and commissioning.
As one of the project's core equipment items, the main transformers are supplied by TBEA Shenyang Transformer Group Co., Ltd. , a leading enterprise in China's power transmission and transformation equipment manufacturing sector.
In November 2024, TBEA Shenyang Transformer Group Co., Ltd. won the bid for the main transformer equipment procurement of the Zhongmei Yongcheng 2×1000MW high-efficiency ultra-supercritical unit project's first auxiliary equipment package, with a bid value of RMB 48.92 million. On June 3, 2026, the No.1 main transformer was successfully positioned; on June 18, the No.2 main transformer was also successfully positioned. Both main transformers were supplied by TBEA Shenyang Transformer Group, with the No.2 main transformer measuring 11.5 meters in length, 4.8 meters in width, and 5.1 meters in height, with a shipping weight of 486 tons. The successful positioning of both main transformers marks the project's full entry into the critical phase of electrical equipment installation.
TBEA Shenyang Transformer Group Co., Ltd. is a core subsidiary of TBEA Co., Ltd. (Stock Code: 600089), with the capability to research, develop, and manufacture power transformers with single-unit capacity of 1,000,000 kVA and voltage class up to 1000kV and below. The company's business covers many countries and regions worldwide, with annual transformer and reactor production exceeding 500 million kVA in 2025.
Once the main transformers are positioned, the next step is handover testing – the final quality checkpoint after equipment installation is complete.
In transformer handover testing, multiple tests are mandatory: DC resistance measurement to verify winding joint welding quality and tap changer contact condition; turns ratio measurement to confirm transformer ratio and connection group meet design requirements; winding deformation testing to detect whether winding displacement or deformation occurred during transportation and installation; and insulation resistance measurement to assess the overall insulation condition of the transformer.
The testing equipment supplied by Kedi Zhongwei for this project covers all of the above requirements:
DC Resistance Tester: Used to accurately measure transformer winding DC resistance, detecting winding joint welding quality and tap changer contact condition. Test current up to 20A, measurement range 1μΩ～2kΩ, accuracy Class 0.2.
Automatic Turns Ratio Tester: Used to measure transformer turns ratio and automatically determine connection group (all 1–12 point groups), measurement range 1～10000, accuracy Class 0.2. Supports single-phase transformers, three-phase transformers (including Z-type connections), voltage transformers, and other test object types.
Transformer Winding Deformation Tester: Uses the frequency response method to detect winding deformation, with output frequency range of 1k～2MHz. It can perform sweep frequency impedance analysis on transformer windings, providing diagnostic basis for safe transformer operation.
Intelligent Dual-Display Insulation Resistance Tester: Output voltage 500～10000V, ranges 5000V/0～200GΩ and 10000V/0～400GΩ. Used to measure transformer winding insulation resistance and absorption ratio, comprehensively evaluating insulation condition.
These testing instruments play a critical role throughout the main transformer arrival inspection, installation and commissioning, and handover testing phases, ensuring that every transformer passes rigorous testing before being put into operation.
From transformer manufacturing at TBEA Shenyang Transformer Group, to on-site installation and positioning at Zhongmei Yongcheng, to handover testing using Kedi Zhongwei's testing equipment – this chain forms a complete quality control loop for power equipment from factory delivery to operational commissioning.
For TBEA Shenyang Transformer Group, reliable testing equipment is an important guarantee for ensuring the quality control of the transformers it supplies and the smooth progress of on-site handover and acceptance. For Kedi Zhongwei, being able to provide testing equipment for the Zhongmei Yongcheng project – a national key energy project – is a strong testament to the company's product quality.
Among the 15 new products that recently passed national-level certification at TBEA Shenyang Transformer Group Co., Ltd., several major technological breakthroughs were included, such as the industry's first UHV high-impedance AC transformer. The development and production of these high-end transformer products likewise rely on high-precision testing equipment as a means of quality assurance. As a professional manufacturer of power testing equipment, Kedi Zhongwei is an indispensable link in this industry chain.
Wuhan Kedi Zhongwei Electric Co., Ltd. is a high-tech enterprise integrating R&D, production, and sales of power testing equipment, instruments, and online power monitoring systems. The company has obtained certifications including High-Tech Enterprise Certificate, ISO9001 Quality Management System Certification, and Member of Hubei Metrology Association. The company holds 6 patents, 8 software copyrights, and 1 registered trademark, and maintains close technical cooperation with Huazhong University of Science and Technology, Wuhan University, Wuhan High Voltage Research Institute, and other research institutions.
The company's products cover 15 major categories with over 300 products, including series resonant test systems, transformer testing instruments, high-voltage switch testers, relay protection testers, cable fault locators, and more. Products are widely used in power grids, power generation, renewable energy, railways, petrochemicals, metallurgy, and other fields, and are exported to Southeast Asia, the Middle East, Africa, South America, and other regions.
Kedi Zhongwei consistently adheres to the business philosophy of "technology leadership, service first," providing customers with full-cycle services from selection consulting and on-site training to after-sales maintenance.
Related Products Recommended:
Transformer DC Resistance Tester
Automatic Turns Ratio Tester
Transformer Winding Deformation Tester
Intelligent Dual-Display Insulation Resistance Tester
Variable Frequency Series Resonant Withstand Voltage Test System
Tags: #WuhanKediZhongwei #ZhongmeiYongchengPowerPlant #TBEA ShenyangTransformerGroup #TransformerTestingEquipment #PowerHandoverTest
