Substation testing is a necessary testing project in the field of power system testing, usually coordinated and operated by local power companies at or above the county level. Today, Baijian Testing will introduce to you what are the testing projects for substations? How long is the testing cycle

First, infrared thermal imaging detection: Infrared thermal imaging is a very important and necessary detection in substation detection. Usually, imported infrared thermal imaging equipment is used to test various transformers, fittings, insulators, etc. inside the substation one by one. Abnormal high temperature imaging equipment is marked and rechecked to confirm whether there are discharge and other faults. Generally, testing is carried out according to DL/T664-2016 standards, The testing cycle is every six months to one year after operation Secondly, there is a type of dissolved gas analysis and detection: this detection project is carried out according to the requirements of Q/GDW 168-2008, and is tested once a year for 110kV and below; Test 220kV every six months; 330kV and above, tested every three months 3. High frequency partial discharge detection: High frequency partial discharge detection should be conducted every 1-2 years. During the detection, the Q/GDW1168 and GB/T16927.1/2/3 standards should be strictly followed, and the equipment to be tested should be tested in strict accordance with the required testing environment requirements. During the detection, the equipment to be tested should be in running condition, the equipment shell should be clean and free of icing, the end screen of the tested equipment should be well grounded, and there is no risk of open circuit, There are no external operations on the equipment, and the test results are analyzed. If the test results show a typical partial discharge test pattern, it indicates that the equipment has obvious defects and should be maintained or replaced; If there are significant differences in the images detected by similar equipment under the same conditions, it indicates that the equipment is in an abnormal state and should be rechecked and maintained; If there is no typical discharge pattern, the device is in normal condition 4. Measurement of iron core grounding current: If it is suspected that there is multiple grounding points of the iron core, the iron core grounding current should be measured, and the measurement result should be ≤ 100mA as the standard; The testing projects mentioned above mainly focus on the performance testing of substation equipment. Other routine testing projects such as appearance status testing and lightning arrester testing are also included. Hongbo Measurement and Control has been specializing in the research and development, production, and testing services of power testing instruments for 15 years. The insulator detection instrument series products, insulator hydrophobicity testing instruments, insulator resistance testing instruments, and other products produced have been purchased and applied by multiple prefecture level power companies, And the company has repeatedly provided substation testing, overhead line partial discharge testing, and overhead line insulator hydrophobicity testing for State Grid Zhoukou Power Supply Company, State Grid Anyang Power Supply Company, Mengxi Power Grid, State Grid Xinyang Power Supply Company, etc