Proceedings ArticleDOI
Study of Coherency-based Dynamic Equivalent Method for Power System with HVDC
Zhou Yang,Duan Yao,Zhang Buhan,Li Junfang,Wang Kai +4 more
- pp 2013-2016
TLDR
In this paper, the authors presented the coherency-based equivalent technique for power system with HVDC, where frequency-domain method and weighting method are comprehensively used in parameter aggregation section in order to reduce the calculation amount of numerical simulation in transient analysis.Abstract:
In order to reduce the calculation amount of numerical simulation in transient analysis for large-scale power system, the network can be simplified by dynamic equivalence. This paper presents the coherency-based equivalent technique for power system with HVDC. Both frequency-domain method and weighting method are comprehensively used in parameter aggregation section in this paper. The adaptability of ac system equivalence to dc system is concerned, and the accuracy of dynamic equivalence of ac system is estimated using dc system disturbance. In numerical simulator PSASP, a dynamic equivalence of EPRI 8-machine 36-bus ac/dc hybrid power system can be derived, in which the specific model of HVDC system is considered. The comparisons of steady-state and dynamic response of original and equivalent system show that the dynamic equivalent model is feasible and available.read more
Citations
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Journal ArticleDOI
A strategy to simultaneously tune power system stabilizers
TL;DR: In this article, the authors aimed to tune multi-band power system stabilizers (MB-PSSs), which main purpose is the power oscillation damping enhancement, by the minimization of a quadratic criterion, which is solved by the differential evolution (DE) optimizer.
Journal ArticleDOI
Dynamic equivalence by an optimal strategy
TL;DR: A robust dynamic equivalence is proposed to reduce the computational burden and time consuming that the transient stability studies of large power systems represent, based on a multi-objective optimal formulation solved by a genetic algorithm.
Journal ArticleDOI
Precise equivalent model of small hydro generator cluster and its parameter identification using improved Grey Wolf optimiser
TL;DR: In this paper, a precise equivalent model of small hydro generator cluster (SHGC) is proposed, where the fifth-order model of generator is adopted as the equivalent generator model, the excitation system is simplified into proportional feedback control model and exponential load model is used as equivalent load model.
Journal ArticleDOI
Dynamic Equivalents by Modal Decomposition of Tie-Line Active Power Flows
Mario R. Arrieta Paternina,Juan M. Ramirez-Arredondo,Jose David Lara-Jimenez,Alejandro Zamora-Mendez +3 more
TL;DR: Results demonstrate a reduction in the computational burden and the computing time associated with transient stability studies for the preserved system, retaining its steady-state and dynamic conditions.
Journal ArticleDOI
Residualisation-based model order reduction in power networks with penetration of photovoltaic resources
TL;DR: An order reduction procedure based on the residualisation method is designed to reduce the order of the system and shows better performance in the steady state compared with three other widely used methods.
References
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Journal Article
Influence of Climate, Soil, and Cultivar on Terroir
Cornelis van Leeuwen,Philippe Friant,Xavier Choné,Olivier Trégoat,Stephanos Koundouras,Denis Dubourdieu +5 more
TL;DR: In this paper, the effects of climate, soil, and cultivar on vine behavior and berry composition were found to be highly significant with regard to vine behavior, and the impacts of climate and soil were greater than that of cultivar.
Journal Article
Climate influences on grapevine phenology, grape composition,and wine production and quality for Bordeaux, France
Gregory V. Jones,Robert E. Davis +1 more
TL;DR: By variety, the relationships between phenology, climate, and composition were typically higher for Merlot than for Cabernet Sauvignon and could be an indication that, in Bordeaux, Merlot is more phenologically and climatologically sensitive.
Journal ArticleDOI
Historical effects of temperature and precipitation on California crop yields
David B. Lobell,David B. Lobell,Kimberly Nicholas Cahill,Kimberly Nicholas Cahill,Christopher B. Field +4 more
TL;DR: The authors analyzed the relationship between crop yield and three climatic variables (minimum temperature, maximum temperature, and precipitation) for 12 major Californian crops: wine grapes, lettuce, almonds, strawberries, table grapes, hay, oranges, cotton, tomatoes, walnuts, avocados, and pistachios.
Journal Article
Impacts of Future Climate Change on California Perennial Crop Yields
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TL;DR: This article evaluated the impact of climate change on six major perennial crops in California: wine grapes, almonds, table grapes, oranges, walnuts, avocados, and table grapes.
Journal ArticleDOI
Bordeaux Wine Vintage Quality and the Weather
TL;DR: The current Bordeaux marketing system has the character of an agricultural income stabilization system, and this may be its purpose as mentioned in this paper, however, it is clearly closer to it than would occur if purchasers used the information available from the weather for determining the quality of the wines.
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