3.5GW PV Project in Midong District, Urumqi, Xinjiang of China Green Development Group

Case Details

Situated on the southern fringe of the Gurbantünggüt Desert in northern Midong District, Urumqi, Xinjiang, the project is invested and constructed by China Green Development Group.As the world’s largest grid-connected single-capacity photovoltaic project, it acts as a landmark clean energy initiative developed across China’s desert, gobi and wasteland regions. This project carries vital significance for accelerating global energy transition and accomplishing China’s dual-carbon goals.

Case Highlights

LAZZEN delivers core electrical protection solutions, with products installed inside low-voltage cabinets of step-up box transformers to perform photovoltaic grid-connected protection duties.

Redress distorted thermal trip performance under high-temperature operating conditions via a revamped design for NDM3A-320VH Molded Case Circuit Breakers, which adopts +50℃ as the benchmark test temperature. This design calibrates systematic discrepancies between product protection characteristic curves and high-temperature ambient conditions, resolving the pervasive industry challenge of unintended tripping generated by thermal-magnetic circuit breakers under extreme heat.

Non-conductive sand and dust contamination in desert power plants frequently leads to poor contact conduction of internal control nodes and degraded signal stability within circuit breakers. The signal output switch integrated into NDWPG-4000HU Air Circuit Breakers utilises hermetically encapsulated microswitches with an IP65 high ingress protection rating. This robust structure blocks sand ingress completely and eliminates control signal interference induced by wind-carried sand particles.