Search

This paper provides a compressive literature review on the application of complex network theories in the resilience evaluation and enhancement of modern power systems. First, the resilience property is decomposed into structural and operational aspects. On one hand, the structural resilience is explained and reviewed by modeling modern power systems as graphs and analyzing the pertinent static and dynamic characteristics. On the other hand, after converting operational data to certain networks, the operational resilience is investigated throughout the progression of an extreme event, namely, from preventive, corrective, to restorative strategies. Moreover, the discussion on resilience evaluation and enhancement is extended to multilayer networks as modern power systems are increasingly coupled with communication networks and other energy carriers. It is concluded that complex network theories serve as an effective means to comprehending and refining the structural and operational resilience of modern power systems. • Critical review of structural and operational resilience of modern power systems. • Detailed discussion on the evaluation and enhancement of power system resilience from a complex network perspective. • Clear explanation for the impact of natural and societal extreme events on modern power systems. • Exploring the possibility of improving the design of power system resilience from a multilayer network perspective. [ABSTRACT FROM AUTHOR]

Bioenergy is considered a promising alternative to achieve carbon neutrality and emission reduction. There is a debate over the role of bioenergy in climate change mitigation because of carbon emissions from the production and utilization of biofuels. Recently, studies on emissions of biogenic volatile organic compounds (BVOCs) have substantially increased as they have a significant impact on human health and climate change due to large emissions and high reactivity. A scientometric analysis of 2895 journal papers during 1991 and 2020 related to BVOC emissions from the Web of Science Core Collection was conducted by CiteSpace and Carrot2. Results showed that three main knowledge domains were BVOC emissions and drivers, BVOCs and their oxidation products in biosphere-atmosphere exchange, and soil BVOCs in plant-microbe interactions during the period under study. Generally, the relationships between plant BVOC emissions and environmental variables (e.g., temperature, drought, light solar radiation, humidity, availability of nutrients, carbon dioxide, ozone, etc.) can be investigated by measurement techniques (i.e., chamber) or models (i.e., Model of Emissions of Gases and Aerosols from Nature). Soils could work as both the sink and source of BVOCs through various processes that are affected by soil temperatures, pH, organic matter, and moisture. Anthropogenic activities might affect the emission of BVOCs and promote the formation of BVOC-derived pollutants (e.g., ozone, particles, etc.). Incorporating BVOC emissions and their relationships with pollutants, biomass, and energy into environmental management and decision-making is a promising direction. [Display omitted] • A scientometric analysis was conducted on the research evolution of BVOC emissions. • Ten clusters generated by CiteSpace were logically reclassified into three hotspots. • MEGAN is the most frequently empirical model for BVOC emission assessment. • BVOC-derived pollutants like SOA are likely affected by anthropogenic activities. • Soils in terrestrial ecosystems can act as both the source and sink of BVOCs. [ABSTRACT FROM AUTHOR]