Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

Recently, a Chinese transformer manufacturer independently designed and manufactured six 750kV ultra-high voltage transformers for a 750kV boosting substation project in Xinjiang. All products passed factory acceptance tests and type tests on the first attempt, obtaining KEMA type test reports. Testing confirmed that all performance indicators exceed national standards and technical agreement requirements. Notably, the high-voltage partial discharge is only 8pC and the medium-voltage partial dis

On October 16, a ±800 kV ultra-high-voltage (UHV) transmission project completed all its maintenance tasks and was fully re-energized. During this period, a regional power company successfully conducted the first-ever fully unmanned inspection of the GIS (Gas-Insulated Switchgear) room at a UHV converter station within this power system.As a key component of China’s “West-to-East Power Transmission” strategy, the ±800 kV UHV project has been in operation since 2016 and has delivered nearly 400 b

1. Application of Condition Monitoring Technology in UHV Transmission LinesAt present, the main characteristics of UHV (Ultra-High Voltage) transmission line condition monitoring technology in China are reflected in the following aspects: Comprehensiveness: In general, during the implementation of monitoring technology, supporting facilities and integrated systems are required to ensure effective monitoring performance; High value: UHV transmission line condition monitoring technology is a criti

UHV (Ultra-High Voltage) substations are a critical component of power systems. To meet the fundamental requirements of power systems, the associated transmission lines must remain in good operational condition. During the operation of UHV substations, it is essential to properly implement the inter-bay jumper installation and construction techniques between structural frames to ensure rational interconnection among the frames, thereby fulfilling the basic operational needs of UHV substations an

In order to actively respond to the development requirements of the power industry, our company has intensified its investigation into grid construction faults in a certain area and provided operation and maintenance support for DC UHV transmission and transformation projects in high-altitude regions by installing and optimizing UHV transmission equipment design schemes. The total land area of the construction site is 2,541.22 m², with a net land area of 2,539.22 m². The geological strata at the

As a critical carrier for power transmission, ultra-high-voltage (UHV) transmission lines place exceptional emphasis on the safety and efficiency of live-line operations. Facing extremely high voltage levels and complex working environments, maintenance technologies for live-line operations on UHV transmission lines have long encountered a series of challenges. Therefore, it is crucial to continuously strengthen research on maintenance technologies for live-line operations on UHV transmission li

1. Overview Ultra-high-voltage (UHV) transformers are core equipment in modern power systems. Understanding their voltage ratings, complex structure, precision manufacturing processes, and critical production techniques reveals why they represent the pinnacle of a nation’s power equipment manufacturing capability. Voltage Level DefinitionThe term "ultra-high-voltage transformer" typically refers to transformers used in AC transmission lines rated at 1,000 kV or higher, or DC transmission lines r

1 Characteristics and Components of High-Voltage Transmission Lines1.1 Characteristics of High-Voltage Transmission LinesHigh-voltage transmission lines are characterized by their relatively low cost due to the smaller amount of information they require. They typically use two conductors, one connected to the positive pole and the other to the negative pole. DC transmission lines have durability and can transmit current over long distances. In some high-voltage transmission facilities in China,