Results 11 to 20 of about 6,673 (112)

计及电价波动的可逆固体氧化物电池“发电-电解产气”综合能源系统建模分析 [PDF]

open access: yes全球能源互联网, 2023
综合能源系统是今后分布式发电站的重要发展方向之一。为了分析计及电价响应和电网激励对电转气(power to gas,P2G)技术的影响,建立了一个结合沼气厂的可逆固体氧化物电池(reversible solid oxide cell,RSOC)热-电-气综合能源系统模型。利用GAMS仿真软件分析了案例中引入的不同能量消耗方式对系统的影响,比较了热电联产(combined heat and power,CHP)和RSOC两种消耗沼气生产电力和热能方式的优劣,分析了电价波动对综合能源系统的投资成本和“弃风 ...
李儒欢   +6 more
doaj   +1 more source

大规模深远海风电送出方式比较及集成设计关键技术研究 [PDF]

open access: yes全球能源互联网, 2019
海上风电由于具有风能稳定、密度大等优点,在世界范围内已逐渐发展成为风力发电的重要形式。在深远海域,风能资源更丰富,风湍流强度与海面粗糙度较近海更小,因此深远海风电发展将成为未来海上风电发展的主要趋势。首先,阐述了海上风电深远海化发展趋势,总结了3种海上风电的并网方式及相应的拓扑结构、主要运行特点。其次,考虑深远海风电的特殊性,重点分析了集电系统可靠性评估与设计、海上升压站设计与换流站设计等3方面的发展趋势。最后,对亟待开展的研究方向、需求进行说明,为深远海风电发展提出建议。
王秀丽, 赵勃扬, 黄明煌, 叶荣
doaj   +1 more source

±1100kV直流SF6气体绝缘穿墙套管支柱绝缘子电场分布特性分析 [PDF]

open access: yes全球能源互联网, 2019
特高压直流穿墙套管作为换流站中连接阀厅和直流场的唯一通道,是承载系统全电压、全电流的核心设备。作为换流站的核心设备,其安全稳定运行关系到整个系统的可靠性。中国某1100kV直流穿墙套管采用V型结构,由户内和户外两个空心复合绝缘子通过穿墙而过的气体绝缘管道连接而成,气体绝缘管道内部垂直安装两个支柱绝缘子。根据气固绝缘系统的非线性电导模型,考虑了气体内部载流子的产生、复合、迁移及扩散的物理过程,计算了1100kV穿墙套管内部气体绝缘管道的支柱绝缘子在直流电压下的电场分布 ...
刘鹏   +7 more
doaj   +1 more source

Use of carrion fly iDNA metabarcoding to monitor invasive and native mammals

open access: yesConservation Biology, Volume 37, Issue 5, October 2023., 2023
Abstract Severely fragmented habitats increase the risk of extirpation of native mammal populations through isolation, increased edge effects, and predation. Therefore, monitoring the movement of mammal populations through anthropogenically altered landscapes can inform conservation. We used metabarcoding of invertebrate‐derived DNA (iDNA) from carrion
Kristen Fernandes   +5 more
wiley   +1 more source

Contrasting ecological information content in whaling archives with modern cetacean surveys for conservation planning and identification of historical distribution changes

open access: yesConservation Biology, Volume 37, Issue 3, June 2023., 2023
Abstract Many species are restricted to a marginal or suboptimal fraction of their historical range due to anthropogenic impacts, making it hard to interpret their ecological preferences from modern‐day data alone. However, inferring past ecological states is limited by the availability of robust data and biases in historical archives, posing a ...
Tom B. Letessier   +8 more
wiley   +1 more source

Connectivity between countries established by landbirds and raptors migrating along the African–Eurasian flyway

open access: yesConservation Biology, Volume 37, Issue 1, February 2023., 2023
Abstract The conservation of long‐distance migratory birds requires coordination between the multiple countries connected by the movements of these species. The recent expansion of tracking studies is shedding new light on these movements, but much of this information is fragmented and inaccessible to conservation practitioners and policy makers.
João L. Guilherme   +9 more
wiley   +1 more source

不同服役年限下动车组高压隔离开关用绝缘子运行性能研究

open access: yesDianci bileiqi, 2022
随着动车组服役年限的增加,其车顶绝缘子的绝缘性能会发生衰退。为研究不同服役年限下高压隔离开关用绝缘子性能衰退特性,本研究以动车组车顶复合支柱绝缘子为研究对象,对其进行了憎水性、绝缘电阻测试和雷电冲击试验。基于绝缘子憎水性测试,研究表明,服役年限为3年的绝缘子憎水性最好,为HC3级。与服役年限为3年的绝缘子相比,服役年限为4年、5年、6年和10年的绝缘子憎水性普遍下降,均为HC4-HC5左右;基于绝缘子绝缘电阻测试,研究表明,不同服役年限下绝缘子泄漏电流变化不大,均维持在30.6μA~42.0μA ...
于治国   +5 more
doaj  

Sun Bear Ecology and Conservation: Multiscale Habitat Associations in Southeast Asia 马来熊的生态与保护:东南亚地区的多尺度生境关联研究

open access: yesIntegrative Conservation, Volume 5, Issue 1, Page 125-136, March 2026.
We collated detections of the sun bear from new and previously published camera trap studies across its range. We then analysed these detections at two different spatial scales to assess the habitat associations and diel activity of this species. We found that the sun bear is tolerant to moderate habitat disturbances. ABSTRACT Degraded tropical forests,
Alexander Hendry   +5 more
wiley   +1 more source

Underrepresentation of bats in Africa's protected areas

open access: yesConservation Biology, Volume 40, Issue 1, February 2026.
Abstract Biodiversity is severely threatened globally, with habitat loss and other human pressures accelerating species extinctions. Protected areas (PAs) are a critical conservation tool; however, their effectiveness in safeguarding many taxa, such as bats, remains unclear.
Cecilia Montauban   +9 more
wiley   +1 more source

Return of the Swamp Rabbit: Sylvilagus aquaticus Occupancy Increased and Expanded Along the Northern Extent of Its Distribution Range 沼泽兔的回归:沼泽兔 (Sylvilagus aquaticus) 在其分布范围北缘的分布率上升并向外扩张

open access: yesWildlife Letters, Volume 3, Issue 4, Page 161-172, December 2025.
Swamp rabbit (Sulvilagus aquaticus) in southeast Missouri is increasing and expanding, with occupancy probabilities of 0.66 in 2010–2012 and 0.79 in 2021–2022. ABSTRACT Swamp rabbits (Sylvilagus aquaticus) are a bottomland hardwood specialist that have experienced range contraction at the northern and western extents of their range.
Thanchira Suriyamongkol   +6 more
wiley   +1 more source

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