EN
intelligent secondary equipment cabins
Dec.15.2025
Xinjiang Huadian Tacheng Hefeng 500MW Photovoltaic Project, located in the desert area of Hefeng Industrial Park, Tacheng Prefecture, is a key project for Xinjiang's "new energy base" construction. Adopting the "PV + ecological governance" development model, it is equipped with 220kV collection stations and energy storage systems, with an annual designed power generation capacity of over 800 million kWh. Nanjing Electric, as the core equipment supplier of the project, relied on its R&D experience in power complete sets of equipment to customize and supply intelligent secondary equipment cabins, which have become the "neural hub" ensuring efficient and stable operation of the desert PV power station.
Targeting the extreme environment of the project site—extreme high temperature of 42℃ in summer, low temperature of -35℃ in winter, and over 50 days of sandstorm weather annually, Nanjing Electric achieved three major technological breakthroughs: the cabin adopts a composite structure of "rock wool sandwich color steel plate + fluorocarbon coating", combined with Nippon radiative cooling coating, realizing natural cooling of 3-5℃ inside the cabin; coupled with the intelligent constant temperature system, the internal temperature is stabilized at 15-30℃; innovatively adopting "positive pressure dust prevention + automatic purging" design, the dust protection level reaches IP65, reducing equipment dust accumulation by 90% compared with traditional cabins; integrating relay protection, data acquisition and remote control modules, adapting to AC/DC220V dual power supply, the protection outlet relay supports 0.5-8.0A adaptive adjustment, meeting the precise control needs under complex working conditions.
A total of 12 secondary equipment cabins were deployed at 3 PV sub-array collection points and 220kV booster stations, undertaking the monitoring, protection and dispatching tasks of 500MW PV power. Since commissioning, they have successfully withstood 18 severe sandstorm weather events and 40℃ daily temperature difference, with equipment response delay less than 20ms and zero operation failure rate. Their stable operation not only supports the project to achieve the designed target of 22 million kWh daily power generation, but also shortens the on-site commissioning cycle by 30% through modular integrated design. Combined with desert-adaptive technology, it reduces operation and maintenance costs by 45%, providing a replicable equipment solution for similar desert PV projects.