| Tian-Guang HVDC as China Southern Power Grid, the first DC transmissionproject, since the Bipolar put into operation in2001, for the west to east career andeconomic development in Guangdong has made a huge contribution. But the originalcontrol protection platform behind, the impact of of secondary aging equipment andspare parts Discontinued adverse factors, the safe and stable operation of theTian-Guang HVDC are increasingly facing a huge threat. To solve this hidden EHVPower Transmission Company of Tian-Guang HVDC control and protection, and partof a device a comprehensive transformation and localization, there is a problem:whether the new control and protection equipment platform may lead DC atresiahidden and weak part of the new secondary device with the original equipmentrunning success of the original may cause atresia factors still exist, these problemswill Tian-Guang HVDC future security and stability of a very negative impact.Firstly a brief overview of the new control and protection system, and then startfrom the pole control system of the blocking logic, a detailed analysis of the variousfactors that may lead to the DC system latch detailed excavations of the currentsystem of potential risk factors and weak links and discussion. In addition, the text ofdebug, during the test run and put into operation since appeared in Tian-Guang HVDCexception of statistics, listing and cause analysis, and run in the new system operation,maintenance of the main points of concern and precautions need.Through this research shows that the majority of system defects are found andrectification after the accident, but if we can advance the start, giving top priority tothe potential risk of completely strangled in the cradle. Based on the above analysis, itis the thesis Tian-Guang HVDC lead single, bipolar latching factors, statisticalanalysis and measures to solve outstanding problems faced in the Tian-Guang HVDCoperation and maintenance very necessary. |
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