Results 31 to 40 of about 319 (105)

基于改进和声搜索算法的有源配电网优化调度

open access: yesGaoya dianqi, 2021
优化调度策略是有源配电网对分布式能源实施主动管理的核心技术,也是有源配电网安全经济运行的重要保障。文中以不同类型分布式电源的出力为控制变量,构建了突出电压质量提升和运行成本降低为目标的模糊化调度模型。引入均匀分布的初始和声库及变维数和声记忆库对基本和声搜索算法的改进用于调度模型的求解。通过IEEE33节点系统上的大量仿真测试和比较分析,验证了所建立的优化调度模型和改进算法的正确性和有效性。
段建东   +4 more
doaj  

Excellent Comprehensive Electromechanical Properties in PZT‐Based Hard High‐Temperature Piezoceramics

open access: yesRare Metals, EarlyView.
ABSTRACT High‐power piezoelectric ceramics which have a wide operating temperature range are essential for sensor and actuator applications in extreme conditions. However, their development is fundamentally hindered by the inherent trade‐off among key parameters (TC, d33, Qm).
Rui Yan   +10 more
wiley   +1 more source

Research on Fault Location in Integrated Energy Systems Based on Improved Binary Particle Swarm Optimization Algorithm [PDF]

open access: yes
ObjectivesThe coverage of power systems continues to expand, and the structure of integrated energy systems is becoming increasingly complex. This trend leads to a significant decline in the accuracy of fault location in the distribution network that is ...
GAO Yang   +5 more
core   +1 more source

Governing the Ungovernable: Mapping the Development of Groundwater Irrigation and Groundwater Policies in India

open access: yesWorld Water Policy, Volume 11, Issue 4, Page 1048-1064, November 2025.
ABSTRACT Groundwater governance is complex due to several externalities associated with groundwater being an invisible natural resource tied to the land with millions of extractors and limited means of exclusion. The paper traces the evolution of groundwater irrigation in India and the corresponding change in groundwater laws and policies to address ...
Anindita Sarkar, Amrita Sarkar
wiley   +1 more source

Institutions, in time: Designing feedback pathways for shared infrastructure transitions

open access: yesPolicy Studies Journal, Volume 53, Issue 3, Page 654-680, August 2025.
Abstract Electric utilities, challenged by a rapidly unfolding energy transition, use many informal institutions to bridge across technologies and sectors. Little is known, however, about how electric utility systems and other polycentric systems' institutions‐in‐use vary and evolve over time.
Matthew Grimley   +6 more
wiley   +1 more source

The study of bidirectional DC-DC converter in the DC microgrid [PDF]

open access: yes, 2016
作为新能源的有效利用方式之一的直流微电网没有无功功率的损耗,不需要跟踪频率和相位,可靠性和可控性有较大程度的提高,更适合分布式能源的接入和应用。双向DC-DC变换器承担着母线与储能之间能量双向流动的重要作用。同时,它还可以作为直流微电网之间的互联元件,具有十分重要的研究价值。 本文针对全桥拓扑结构的双向DC-DC变换器展开较为深入的研究。 首先,详细分析了在移相控制方式下,双向DC-DC变换器的在降压方向和升压方向的工作原理及零电压开关(ZVS,Zerovoltageswitching)的具体过程 ...
纪承承
core  

Overview of Active Distribution Network Planning With High Proportion of New Energy Access [PDF]

open access: yes
The new energy is connected to the distribution network in the form of distributed generation, which brings uncontrollability, randomness and volatility to the system. With the help of modern power electronics, information and communication and automatic
GAI Xueyang   +4 more
core   +1 more source

基于碳排放流的配电系统低碳优化运行方法研究 [PDF]

open access: yes全球能源互联网, 2019
新时代下,低碳高效的发展模式既是能源互联网的发展宗旨,也是电力工业从高速发展转向高质量发展的重要表现形式。近年来,配电网发展在整个电力行业中的角色越发重要,各类新型分布式能源发电技术与储能技术的应用越来越广泛。由于配电网依托主网运行,其在供电过程中的碳排放难以准确统计,对面向低碳的配电网优化运行策略提出了严峻挑战。通过引入碳排放流理论,分析了碳排放流在配电网系统中的分布规律与计算特点,并建立了储能元件的碳排放流分析模型,在此基础上,以配电网用电碳排放为目标函数,建立了配电网低碳优化运行模型 ...
周天睿, 康重庆
doaj   +1 more source

Research on Key Technology and Engineering Application of Hybrid DC/AC Microgrid [PDF]

open access: yes, 2017
微电网被认为是解决分布式电源并网难题及发电技术应用瓶颈的有效途径。常见微电网结构包含交流微电网、直流微电网和交直流混合微电网等。本文提出一种基于直流微电网的直交流混合微电网,具有直流微电网结构简单、高效节能、成本较低、控制便捷、可靠性高等诸多优点,又可以满足交流负荷不间断用电的需求,因此具有很强的工程应用价值。本文对此特殊架构的光伏直交流混合微电网系统进行了研究。 首先介绍了课题的研究背景与意义,详细分析了交流微电网、直流微电网、交直流混合微电网国内外发展现状并比较了各自的优缺点 ...
陈颖
core  

Power Coordinated Control Strategy for Grid-Connected DC Microgrid Considering State of Charge [PDF]

open access: yes
ObjectivesExisting research on decentralized coordinated control strategies mainly focuses on power distribution within DC microgrid, with limited consideration given to the operation of grid-connected DC microgrids.
LI Hailong   +6 more
core   +1 more source

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