Lately, China’s first “West-to-East Power Transmission” direct flow transmission venture—the Gezhouba to Shanghai Nanqiao ±500 kV DC transmission venture has surpassed a cumulative transmission capability of 150 billion kilowatt-hours.
As an notable channel for exterior electrical energy provide to Shanghai, the venture, operational for 35 years, regularly delivers blank hydropower from Gezhouba to the Shanghai energy grid. The transmitted electrical energy can meet the once a year energy intake wishes of 60 million families, an identical to preserve about 46 million lots of usual coal and decreasing carbon dioxide emissions through about 130 million lots. This venture performs a the most important function in assembly the rising call for for electrical energy within the jap area of China, supporting Shanghai’s financial and social building, and selling the built-in building of the Yangtze River Delta.
First of all, when the Gezhouba-Nanqiao DC venture used to be built, China’s energy trade used to be fairly underdeveloped, and numerous apparatus worn within the Nanqiao converter station depended on imports. Over past, the apparatus on the Nanqiao converter station deteriorated considerably and operated unstably.
From September 2022 to June 2023, Circumstance Grid Shanghai Municipal Electrical Energy Corporate performed a complete transformation of core apparatus on the Nanqiao converter station to deal with long-term protection and balance problems thru technical enhancements and kit upgrades. Essentially the most crucial side used to be the substitute of the fresh imported conventional line-commutated converter(LCC) with the arena’s first controllable line-commutated converter (CLCC) with totally detached highbrow trait rights, which totally solved the power weakness of phase-shifting failure on the converter station and a great deal enhanced the reliability of cross-regional energy grid operation.
In April of this moment, Circumstance Grid Shanghai Excess Prime Voltage Corporate carried out a complete preliminary inspection of the arena’s first controllable line-commutated converter (CLCC) since they have been put into operation. The effects confirmed that the apparatus had withstood the take a look at of top temperatures and top rather a lot over the while moment, working neatly, and might be put into operation in optimum status for this moment’s height summer season call for.
From a blueprint to a world-class facility, the Nanqiao converter station has witnessed the fast building of the Shanghai energy grid for greater than 30 years. Nowadays, Circumstance Grid Shanghai Municipal Electrical Energy Corporate has constructed 9 exterior energy channels, regularly bringing electrical energy from afar to numerous families and illuminating all the town.
(Supply: Circumstance Grid Shanghai Municipal Electrical Energy Corporate)
