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      Study on localization of transformer partial discharge source with planar arrangement UHF sensors based on singular value elimination

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      AIP Advances
      AIP Publishing

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          Robust Time Delay Estimation Method for Locating UHF Signals of Partial Discharge in Substation

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            Localization Algorithm for the PD Source in Substation Based on L-Shaped Antenna Array Signal Processing

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              Is Open Access

              Research and application of UHV power transmission in China

              The power demand increases rapidly in China; however, the areas of huge power demands are of long distance from most areas of abundant energy resource in the country. Therefore, China put in great effort to develop ultrahigh voltage (UHV) power transmission systems to optimise its energy allocation. This includes (i) systematically developing key technologies such as overvoltage suppression, external insulation design, and electromagnetic environment control, and (ii) developing key equipment such as UHV alternative current (UHVAC) transformers, circuit breakers, and series compensated equipment, and UHV direct current (UHVDC) converter transformers, smoothing reactors, converter valves, and DC transmission control and protection systems. Eight AC UHV projects and 11 DC UHV projects have been built in China, which play an important role in the optimal allocation of energy. Plus there are one more UHVAC and three more UHVDC transmission projects in construction, while UHVAC gas-insulated lines will be applied in the UHVAC line crossover the Yangtze River and the ±1100 kV UHVDC power transmission technology is in development. Here, the development and application of UHV power transmission technologies in China are described, some main challenges the UHV projects encountered are discussed, and experiences obtained from the operation of UHV systems are introduced. It is concluded that China obtained mature experience in developing, constructing, and operating UHV systems and successfully realised long-distance, large-capacity power transmission, and the UHV power transmission technology has become an important measure for energy allocation in large areas.
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                Author and article information

                Journal
                AIP Advances
                AIP Advances
                AIP Publishing
                2158-3226
                October 2018
                October 2018
                : 8
                : 10
                : 105232
                Affiliations
                [1 ]School of Electrical Engineering, Wuhan University, Wuhan 430000, China
                Article
                10.1063/1.5055668
                b13d3265-b264-4181-ba69-4ce696503207
                © 2018
                History

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