Recently, SCG-75-2-13.2kV-2100/1750MVA-50/60Hz short-circuit shock generator designed, manufactured, installed and tested by SEC Electric Machineryco.,LTD. for the on-off and on-off test of high voltage electrical apparatus used in a certain project, single-machine and dual-machine parallel debugging passed joint debugging and acceptance. Acceptance of the maximum short-circuit test current 12kV/63kA, the performance indicators in the domestic and industry are advanced level.
Due to the wide variety of high-voltage electrical products and wide application range, there is no large capacity test system for high-voltage electrical appliances for mining in China. This project is the first large-capacity test system for mining high-voltage electrical appliances built in China, which helps to solve the problem of weak independent research and development ability of mining high-voltage electrical devices in China for a long time, and realize the independent development and localization of large-scale mining high-voltage electrical products, which is of great significance for the development of China''s mining high-voltage electrical appliances industry.
Product introduction
SCG-75-2-13.2kV-2100/1750MVA-50/60Hz is a cutting-edge product customized for the short duration and endurance test of various switches, circuit breakers, contactors, transformers and dynamic thermal stability test of cables.
Based on the rich experience in motor design and manufacturing, combined with the special requirements of different electrical short-circuit tests, the electric motor adopts the field-circuit coupling analysis and design method to conduct finite element 2D/3D modeling analysis of the system, and conducts finite element analysis and calculation of the electromagnetic field of the motor. At the same time, transient processes such as breaking test, short-time tolerance test and dynamic thermal stability test are simulated by building external circuits. The finite element analysis of the whole short-circuit test condition is carried out, and the analysis result is high precision, ensuring that the recovery voltage and other parameters meet customer requirements.
The short-circuit impulse generator has optimized structure design, large rotor inertia, light weight, low vibration and noise, and good modular design maintainability. At the same time, it has excellent electromagnetic transient performance and mechanical characteristics to ensure that the recovery voltage, TRV and frequency change after the breaking test meet the test requirements. The design value of the maximum short-circuit breaking test current of the single machine is 13.2kV/50kA, and the design value of the maximum short-circuit breaking test current of the double machine in parallel is 13.2kV/100kA.
Over the past 19 years, CLP Electric has focused on the main channel, focused on the research and development and production of various types of special motors, and has rich experience in the research and development, design and production of short-circuit impact generators, and continues to provide high-quality motors for major domestic projects:
2010年
Signed two DSF-50-2 13.8kV 50/60Hz short-circuit impulse generator sets (single initial short-circuit capacity 1750MVA);
The year 2017
Signed one SCG-20-2 12kV 50Hz short-circuit impulse generator set (single initial short-circuit capacity of 660MVA);
The year 2017
Signed 2 sets of SCG-75-2 13.2kV 50/60Hz short-circuit impulse generator sets (initial short-circuit capacity of a single set 2100MVA);
The year 2020
Signed 2 sets of SCG-75-2 13.2kV 50/60Hz short-circuit impulse generator sets (initial short-circuit capacity of a single set 2100MVA);
Reserve item
SCG-100-2-14kV-4200/3500MVA-50/60Hz short circuit impact generator set (single initial short circuit capacity 4200MVA)
When the wind is good, it is time to set sail. SEC will not forget the original intention, continue to deepen, with quality improvement as the cornerstone, with scientific and technological innovation as the purpose, to provide a continuous driving force for "China''s intelligent manufacturing".
