LI Wei, YE Chang, LI Leying, et al. High-frequency Sensing Technology of Partial Discharge of Switchgear Cabinet for Wind Solar & Energy Storage Stations in Gobi Deserts[J]. High voltage apparatus, 2025, 61(3): 52-62.
DOI:
LI Wei, YE Chang, LI Leying, et al. High-frequency Sensing Technology of Partial Discharge of Switchgear Cabinet for Wind Solar & Energy Storage Stations in Gobi Deserts[J]. High voltage apparatus, 2025, 61(3): 52-62. DOI: 10.13296/j.1001-1609.hva.2025.03.006.
High-frequency Sensing Technology of Partial Discharge of Switchgear Cabinet for Wind Solar & Energy Storage Stations in Gobi Deserts
the operating conditions of electrical equipment are severe
the operation and maintenance are difficult and the operation and maintenance cost is high. Remote intelligent monitoring of the health status of the electrical equipment is an important prerequisite for improving operation and maintenance efficiency and reducing the cost of electricity. Therefore
a kind of built-in high-frequency sensing technology for 35 kV switchgear cabinet is proposed in this paper. The high-sensitivity built-in high-frequency current coupling and sensing technology is studied for the first time. A three-dimensional clustering recognition anti-pulse interference method based on three-phase and three-band energy ratio is developed. The study result shows the sensitivity of the built-in high frequency current detection method is up to 22 pC. The three-dimensional clustering recognition method of energy ratio can effectively distinguish internal and external pulse signal of switchgear cabinet. On this basis
the partial discharge high frequency sensing system of switchgear cabinet is developed and used in 35 kV switchgear cabinet of solar and energy storage station in Gobi deserts. The study conclusion in this paper has significance for the development of remote intelligent monitoring technology of insulation status of switchgear cabinet of solar and and energy storage station in Gobi deserts.