Identification of urban waterlogging risk zones using Analytical Hierarchy Process (AHP): a case of Agartala city

Environmental Monitoring and Assessment, Journal Year: 2025, Volume and Issue: 197(3)

Published: Feb. 24, 2025

Language: Английский

Research on the Health Evaluation of a Pump Turbine in Smoothing Output Volatility of the Hybrid System Under a High Proportion of Wind and Photovoltaic Power Connection

Energies, Journal Year: 2025, Volume and Issue: 18(5), P. 1306 - 1306

Published: March 6, 2025

With the high proportion of wind and photovoltaic (PV) power connection in new electricity system, system output volatility is enhanced. When fluctuation suppressed, pumped storage condition changed frequently, which leads to vibration enhancement unit a decrease safety. This paper proposes pump turbine health evaluation model based on combination weighting method cloud PV scenario. The wind–PV characteristics complementary year (8760 h) typical week four seasons (168 are analyzed, frequent working transitions units studied against this background. A five-level classification including multi-dimensional indicators established, multi-level membership quantification realized by combining method. case analysis station within shows that as whole presents (Ex = 76.411, En 12.071, He 4.014), degree “good” state reaches 0.772. However, draft tube index 62.476) water guide 50.333) have shown deterioration trend. results verify applicability reliability model. study provides strong support for safe stable operation context high-proportion connection, great significance smooth system.

Language: Английский

Geological hazard vulnerability assessment based on cloud model in Zhejiang Province, China

Natural Hazards, Journal Year: 2025, Volume and Issue: unknown

Published: May 9, 2025

Language: Английский