AI815 开关量输出模块
C变压器58
HVDC和UHVAC变压器58 ABB回顾更强大HVDC技术在过去五年中的快速发展，从800 kV DC到1100 kV DC，既值得注意，也值得注意，因为从600 kV DC到800 kV DC的步骤需要25年→4.最近，在高压直流变压器领域又取得了两项突破性进展，继续证明ABB在变压器创新和客户承诺方面的领导作用。其中一项进步涉及800 kV直流输电线路的额定功率，从8000 MW增加到10000 MW。为了将额定功率提高25%，ABB重新设计了热系统，以应对换流变压器的电流增加。由于功率增加，物理尺寸和规模增加的技术挑战也得到了成功解决。因此，ABB为世界上第一个10000兆瓦、800千伏特高压直流输电项目和其他类似项目提供了换流变压器。另一项突破涉及HVDC换流变压器的交流电压水平。ABB已开发出将所有现有直流输电电压水平与所有现有交流电网电压水平互连的能力。凌绍项目是这项新技术的首次商业应用。ABB的换流变压器促进了750 kV交流电网与8000 MW、800 kV高压直流输电的互联。该技术的成功型式试验获得了合同授予——酒泉湖南项目。
远距离传输
前沿换流变压器和部件的供应有助于电力的远距离传输，降低了损耗，并展示了高压直流电增强交流电网的能力。在1100 kV特高压直流输电的首次商业应用中，ABB的换流变压器也连接到750 kV交流网络；这表明了UHVAC到UHVDC互连的趋势。UHVAC变压器最近，ABB能够提高交流网络的电压水平，并显著提高变压器的性能。同样的动机被用于驱动交流电压的增益，以促进电力的有效远距离传输。尽管ABB多年来一直在生产UHVAC变压器，但2016年ABB向印度的一座变电站交付了世界上第一台商用1200 kV交流变压器，取得了重大突破。这台单相333 MVA、1200 kV自耦变压器完全组装，重270吨，长9米多，宽8米多，高18米多。ABB的高压套管从变压器箱顶部伸出11.5米，变压器箱重6吨→5.案例研究–1100 kV直流项目主要负荷中心位于中国东部地区，而其大量能源资源（如水电）位于西部和西北部[1]。过去十年经历的广阔的地理环境和不断增长的能源需求促使超高压容量的增加，以最小的损耗在更远的距离上传输更多的电力。
C Transformer 58
HVDC and UHVAC transformers58 ABB reviews the rapid development of more powerful HVDC technology in the past five years. From 800 kV DC to 1100 kV DC, it is worth noting, as the steps from 600 kV DC to 800 kV DC take 25 years → 4. Recently, two breakthroughs have been made in the field of high-voltage DC transformers, which continue to prove ABB's leadership in transformer innovation and customer commitment. One of the improvements involved an increase in the power rating of the 800 kV DC transmission line from 8000 MW to 10000 MW. In order to increase the rated power by 25%, ABB redesigned the thermal system to cope with the current increase of the converter transformer. Due to the increase of power, the technical challenges of increasing physical size and scale have also been successfully solved. Therefore, ABB has provided converter transformers for the world's first 10000 MW, 800 kV UHVDC project and other similar projects. Another breakthrough involves the AC voltage level of HVDC converter transformers. ABB has developed the ability to interconnect all existing DC transmission voltage levels with all existing AC grid voltage levels. Lingshao project is the first commercial application of this new technology. ABB's converter transformers facilitate the interconnection of 750 kV AC power grid with 8000 MW, 800 kV HVDC transmission. The successful type test of this technology was awarded the contract Jiuquan Hunan Project.
Long distance transmission
The supply of frontier converter transformers and components contributes to the long-distance transmission of power, reduces losses, and demonstrates the ability of HVDC to enhance the AC network. In the first commercial application of 1100 kV UHVDC, ABB's converter transformer is also connected to the 750 kV AC network; This indicates the trend of UHVAC to UHVDC interconnection. Recently, ABB has been able to improve the voltage level of the AC network and significantly improve the performance of the transformer. The same motive is used to drive the gain of AC voltage to promote the effective long-distance transmission of power. Although ABB has been producing UHVAC transformers for many years, in 2016, ABB delivered the world's first commercial 1200 kV AC transformer to a substation in India, making a major breakthrough. This single-phase 333 MVA, 1200 kV autotransformer is completely assembled, weighing 270 tons, more than 9 meters long, more than 8 meters wide and more than 18 meters high. ABB's high-voltage bushing extends 11.5 meters from the top of the transformer box, and the transformer box weighs 6 tons → 5. Case study – The main load center of the 1100 kV DC project is located in eastern China, while its large amount of energy resources (such as hydropower) are located in the west and northwest [1]. The vast geographical environment and growing energy demand experienced in the past decade have led to the increase of ultra-high voltage capacity, which can transmit more power over a longer distance with minimum loss.
