Results 81 to 90 of about 4,239 (155)
Coordinated Optimization of Intelligent Soft Open Points and Multiple Types of Shared Energy Storage in Distribution Networks Considering Flexibility Deficiency Risk [PDF]
ObjectivesTo address the operational security issues in the new-type distribution network caused by the high-penetration integration of renewable energy, this paper proposes a coordinated optimization method for intelligent soft open points and multiple ...
FAN Xiaochao +5 more
core +1 more source
Gaoya dianqi交直流混联配电网线损小、供电容量高、电能质量优，是现代配电网的发展趋势。同时，交直流混联配电网故障后，分布式电源的不确定性会引起配电网故障切除后的电压波动。为解决此问题，提出基于储能控制的交直流混联配电网故障电压波动平抑方法，分析了交直流混合配电网故障特征，建立了配电网储能逆变器控制器模型，提出了基于变步长扰动控制的改进V/f控制策略，减小了光伏出力波动对故障配电网电压及频率安全的影响。仿真结果表明：通过对储能系统的控制，系统发生三相故障、两相短路故障和单相接地故障时，电压和频率波动都有一定的抑制作用 ...
李锰, 孙义豪, 樊江川, 赵岩
doaj
Influences of Large-scale Smart Charging Stations on Small-Signal Stability of Power Systems [PDF]
, 2014 Cai, Hui +5 more
core +1 more source
Research on Tidal Optimization of Voltage Overrun Problem in Photovoltaic Distribution Network With Electrical Energy Router [PDF]
ObjectivesWith the access of high-penetration distributed photovoltaic to the distribution network, the problems of power back-feeding and voltage overrun become more and more serious.
FENG Zining +3 more
core +1 more source
Gaoya dianqi配电系统正在朝着三相负荷消耗愈加不平衡的方向发展，三相负荷不平衡会显著增加三相电压不平衡，进一步影响三相配网节点电价DLMP（distribution locational marginal price）。此外，过大的电压不平衡将会对配电网和用户设备造成巨大的危害。配网中的居民暖通空调（heating，ventilation and air conditioner，HVAC）负荷因其热惯性，在用电行为上具有较大的灵活性，有助于缓解配网三相电压和DLMP的不平衡。对此 ...
昌力 +5 more
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Gaoya dianqi, 2011 介绍了目前广东电网使用的配网用避雷器的类型、安装方式,并对广东电网配网10 kV避雷器的故障模式进行详细调研统计,对现场获取的部分典型避雷器与生产厂家相同型号的未使用避雷器进行对比试验分析,分析了目前广东地区配网用避雷器的故障原因及安装和使用中存在的问题,主要为电阻片规格、密封性、结构、安装方式、接地电阻等方面不符合要求,导致广东电网配网避雷器故障较多。笔者提出应提高电阻片规格,改进密封性能、结构设计及安装方式,以提高广东电网的供电可靠性。
彭发东, 彭向阳, 熊易, 雷晓燕
doaj
Gaoya dianqi, 2018 微电源的优化配置是微电网设计规划阶段的重点,是实现微电网整个生命周期安全可靠经济运行的基础。文中提出了以负荷支撑最大和系统总成本最低为多目标的独立微电网微电源优化配置方法。提出微电源配置要以保证电能质量及供电可靠性为前提,进而提出了相应的微电网组网规则,并验证了组网规则是微电源配置中必须遵守的规则之一;提出了将储能作为系统源储荷平衡的桥梁,以实现对不可控微源的补充作用;还分析了系统备用度对微电源配置的影响,为微电网后续的扩展奠定基础。文中分别对2类微电源进行分析,采用分层优化方法进行求解 ...
李咸善 +4 more
doaj
A Soft Open Points Siting, Sizing, and Multi-Period Power Flow Optimization Based on Second-Order Cone Relaxation [PDF]
[Objective] With the large-scale integration of distributed energy resources such as wind and solar power, distribution networks are experiencing increasing operational challenges, including voltage violations, reverse power flows, and rising line losses.
Kai ZHANG +3 more
core +1 more source
Voltage Hierarchical Control Strategy of Active Distribution Network Based on Deep Reinforcement Learning [PDF]
ObjectivesThe randomness and volatility of distributed power generation poses significant challenges for the voltage control in active distribution network (AND).
DU Wanlin +6 more
core +1 more source
Gaoya dianqi, 2016 大量可再生能源接入电网给配电网的控制带来了巨大挑战,传统配电网的被动控制已经不能满足对配电网能量双向流动的实时控制,发展研究主动配电网分层分布控制能实现对可再生间歇式能源的有效消纳及控制。文中将主动配电网（ADN）划分成3层控制结构,根据全局优化及馈线控制误差（feeder control error,FCE）提出定交换功率控制、区域协同控制、区域自治控制3种模式及它们之间进行主动切换的条件、方法。最后通过MATLAB/Simulink建立一个简单的ADN配电系统模型进行仿真 ...
刘波 +4 more
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