The ultrahigh-voltage DC transmission line processing junction fitting heating live working method is an optimal working method concluded through field operation and is convenient to operate, high in safety and universality, thereby being application to ultrahigh-voltage DC transmission line processing ...
In July 2016, ABB Group received a contract in China to build an ultrahigh-voltage direct-current (UHVDC) land link with a 1100 kV voltage, a 3,000 km (1,900 mi) length and 12 GW of power, setting world records for highest voltage, longest distance, a...
BEIJING, April 26 (Xinhua) -- Work on China Southern Power Grid's 24.25 billion yuan (3.59 billion U.S. dollars) Wudongde direct current project, the world's first multi-end flexible ultrahigh voltage direct current power transmission (UHVDC) project, is progressing steadily and expected to ...
Analyzing HVDC double valve voltage distribution uneven, comprising the following steps: 1) control and protection system reads the high-voltage converter transformer tap shift position TFH_POS through acquisition unit and a data bus, low voltage converter transformer tap position Location THL_POS; at...
The invention relates to a single-ended transient voltage protection method for an ultrahigh voltage direct current transmission line, and belongs to the technical field of ultrahigh voltage direct current power transmission. According to the method, a protection device on a rectification side is used...
Large, point-to-point ultrahigh-voltage direct current (UHVDC) interconnections are well-established and successfully operating worldwide. Before those links can be interconnected to properly becomesupergrids, several pending issues related with advanced management, control and protection systems should be ...
Ultrahigh-voltage direct current (UHVDC)based on LCC converter technology can deliver large volumes of electrical energy over long distances, with arated voltageof ±800kV and above. This technology is currently the option for long-distance, large-capacity, point-to-point power transmission and for...
Ultrahigh electricity generation from low-frequency mechanical energy by efficient energy management. Joule, 2021, 5: 441–455 Article Google Scholar Zheng Q, Fang L, Tang X, et al. Indoor air dust removal system based on high-voltage direct current triboelectric nanogenerator. Nano Energy, 2022...
The existence of ultrahigh voltage direct-current (UHVDC) transmission lines impacts geoelectric field observation (GFO), which further disturbs earthquake observation and prediction. We proposed a mathematic method based on a 3-dimensional layered soil model to calculate the interference and conducted GF...
Technological and Economical Analysis of Prevention Schemes for DC Bias Effects caused by UHVDC Grounding Current The DC bias effects of the transformer is produced by the grounding current from the grounding electrode of the ultrahigh voltage direct current (UHVDC) sy... Z Yu,Y Ren,L Zhao,.....