Results 41 to 50 of about 319 (105)
分布式电源(DG)的大量接入导致系统短路容量增大并伴随着“误送电”、“孤岛可靠性”等作业安全风险,有源配电网下的运行检修工作面临新的挑战。将分布式电源分为旋转电机型和逆变型两类,分别考虑了在低压侧开展检修工作时中压DG、低压DG误送电典型情况。根据叠加定理,计算由于误操作、故障等在短路接地线上产生的短路电流以及在工作点附近的残压大小,分析两种典型情况下检修作业安全性,并基于奥迪道克公式选取合适的短路接地线截面积,最后提出可靠、安全的接地措施。通过在实际案例中进行验证应用,说明了分析的合理性和方法的可行性。
李天友 +5 more
doaj
MgdFlow: multi-granularity data flow management algorithm in microgrid scenario [PDF]
Aiming at the problem of frequent entry space occupation and resource scheduling caused by passive response insertion of flow entries by software defined network (SDN) devices, a operational function-based multi-granularity data flow management algorithm
Qingyue CAO, Rui ZHU, Youbo JING
core +1 more source
分布式电源输出的间歇性、非线性特点给配电网的继电保护配置与整定带来很大困难,考虑配电网结构的复杂性以及通信设备覆盖全网的高成本问题,需要研究仅利用保护本地信息进行保护自适应整定的方法。分析并建立了逆变型分布式电源的输出特性方程,通过求解故障前分布式电源运行点获取分布式电源的实时输出特性,针对下游保护研究并提出基于本地信息进行自适应电流保护整定的原理及方法。该方法能够不依赖于通信,准确获取逆变型分布式电源的实时运行参数,从而提高电流保护整定的可靠性 ...
贾健飞 +4 more
doaj
Optimal Configuration of Distributed Generation Considering Carbon Trading and Reactive Power Compensation [PDF]
Under the background of “double carbon”, the introduction of carbon trading and reactive power compensation mechanism in the planning of distributed generation is an important means to realize the low-carbon and stability of power system.
CHU Zhuang, SUN Jianhao
core +1 more source
考虑数据中心和分布式能源接入的配电网双层规划方法 [PDF]
在大数据时代背景下,社会对数据处理需求的增加导致电网中数据中心的负荷不断增长,若按数据中心原始负荷接入电网,会对配电网运行产生较大的负担。而数据中心的批处理负载与配备的储能设备决定了其可以作为灵活性负荷接入电网参与需求响应。通过选取包含数据中心、常规负荷与光伏机组的配电网作为研究对象,采用双层规划方法建立了考虑数据中心运行灵活性和分布式光伏接入的配电网规划模型,上层模型以最小化配电网系统的规划与运行成本为目标,对配电网线路以及其内部的光伏机组与燃气轮机容量进行规划 ...
徐衍会 +4 more
core +1 more source
Optimization method for island and reef hybrid power generation systems' power capacity based on adaptive ant colony algorithm [PDF]
Objectives Aiming to address the existing challenges in the power capacity configuration of island and reef hybrid power generation systems, this paper proposes an optimization method based on the adaptive ant colony algorithm (ACA).
Hao ZHANG +4 more
core +1 more source
一、基本原理 电磁场的数值分析法,可分为两大类:一类是先把待求电磁场问题提成偏微分方程和边界条件组成的定解问题,然后用差分法或有限元法求解;另一类则先用积分方程表示场源和场量之间的关系,再用矩量法或模拟电荷法等计算待求场量。 根据等效场源的观点,可把同一电场看成由单层形式分布的表面电荷或双层形式分布的表面电荷或点电荷、线电荷、面电荷等不同形式电荷分布的某种组合激发的。由于场源分布的不同,联系场量和场源的积分方程也不同。
陆忠亮, 肖衍明
doaj
Review of Energy Management Systems for Islanded Microgrids [PDF]
ObjectivesAgainst the backdrop of energy resource scarcity and increasing environmental demands, distributed energy supply technologies, particularly renewable energy technologies, have attracted significant attention due to their high energy efficiency,
BIE Yu +4 more
core +1 more source
Feasibility Analysis on MH Corporation ZNPD Investment Project [PDF]
近年来,国家对电网智能化高度重视并加大投资,2009年国家电网公司提出建设“坚强智能电网”计划,到2020年智能电网总投资规模接近4万亿。2015年,国家发改委发布了《关于加快配电网建设改造的指导意见》,明确指出要全面加快现代配电网建设,要求配电控制设备提高智能化程度;随着现代信息技术、传感技术及电力电子技术的迅猛发展,传统的配电控制设备已不能满足现实需要,智能配电已成为配电控制设备行业发展的必然趋势,并具有广阔的市场前景。 MH公司为抢占市场先机,拟投资建设ZNPD项目。本文是在项目建设前 ...
孙汉全
core
Fault location method for island and reef distributed power supply system based on immune model and improved immune algorithm [PDF]
Objective In order to improve the rapidity and accuracy of fault location for island and reef power supply systems composed of multiple distributed power sources, a fault location method based on an immune model and improved immune algorithm is proposed.
Chenghu XU +4 more
core +1 more source

