December 12, 2013 morning, in South Hamilton - Zhengzhou ± 800 kV HVDC Electrical drive South Hamilton converter station lights. After 12 hours of operation, the station very high-end C-phase converter outlet change oil temperature table set at 60 degrees Celsius, marking the Hubei Electric Power Research Institute independently developed low-frequency heating power supply device field verification success, to deal with cold and low temperature transformers Hot oil recycling process site adds another weapon.
As early as the beginning of 2012, Hubei Electric Power Research Institute started the research on the low-frequency heating of large transformers and successfully developed the world's first low-frequency power supply with a total independent intellectual property rights of only 650 kg. In the past need 3 container flatbed trailer to transport equipment, and now a bookshelf size, a few strong guys can lift up, have a strong adaptability of the project site.
During the on-site work at Hamnaman converter station, the equipment has created a historical record of only one tenth of the traditional method from the injection of cold oil to meet the requirements of the code, and the main technical indexes of the converter for changeover during heating are measurable and controllable. Well-known experts and transformer manufacturers participating in the scene witness the unanimous view that the low-frequency heating technology and complete set of devices have the advantages of high integration, good safety and stability, and long-time running characteristics, effectively solving the problem that the converter transformer is installed due to extremely low winter temperatures After heating and drying takes a long time engineering and technical problems, the heating effect is extremely significant, significantly shorten the installation period, in northern China substation winter construction has a great promotion and application value, this technology has a very broad market prospects and applications.
Nantong Weizhuo Environmental Protection Equipment Co.,Ltd , https://www.natongcwz.com