Results 41 to 50 of about 2,204 (121)
Dianci bileiqi, 2023 针对新能源送出型电网在暂态故障下容易产生过电压问题，提出考虑暂态过电压抑制的新能源送出型电网无功优化方法。首先，分析了新能源送出型电网等值电路的弱送端电网在直流闭锁故障下的暂态过电压机理，分析了过电压抑制策略；然后，为实现暂态能量在新能源集群和无功调节设备之间的有效分配，以新能源集群和无功调节设备作为决策变量，以新能源送出型电网无功裕度作为目标函数，建立考虑暂态过电压抑制的新能源送出型电网无功优化模型，并采用约束自适应粒子群算法对优化模型进行求解 ...
李文竹, 寇汉鹏
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Droop Control Strategy of Distributed Photovoltaic Reactive Power Considering Probability Distribution [PDF]
Distributed photovoltaic access to the distribution network has gradually become a trend, but the large-scale distributed photovoltaic grid connection will cause serious power flow reversal, resulting in out-of-limit voltage and network loss increase ...
DAI Jianfeng +5 more
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风电场参与电网一次调频最优方案选择与风储协调控制策略研究 [PDF]
全球能源互联网, 2019 研究了大型风电场联合集中式储能系统参与电网一次调频的可行性与经济性，并提出一种风储联合调频控制策略。统计分析了正常运行与发生功率缺额事件下实际电网的频率特性，仿真验证了新能源机组参与电网一次调频的必要性；类比火电机组一次调频原理，提出了新能源机组参与一次调频的基本条件；分析了风电机组基于转子惯量、预留备用和配置储能3种调频方案的技术经济性，指出风电场装配集中式储能以承担一次调频是更为经济有效的调频方案。旨在充分利用风机转子惯量以减少配置储能容量，提出一种风储协调的调频控制策略，有效减少储能容量。
刘辉 +4 more
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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
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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
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Gaoya 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
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Grid-Connected Power Fluctuation Suppression and Energy Storage Optimization Configuration of Photovoltaic-Energy Storage System [PDF]
ObjectivesBattery energy storage system is one of the effective means to ensure the reliability of photovoltaic (PV) power generation system and improve the utilization rate of PV power generation.
JIANG Menghao +4 more
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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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Overview of Active Distribution Network Planning With High Proportion of New Energy Access [PDF]
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
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Gaoya dianqi, 2018 分布式电源接入配电网以后,其结构单源辐射型网络转变为多源多方向网络,于是主动配电网在消纳分布式电源容量时方向信息采集成为必要,由于配电网广大节点没有安装电压互感器,传统功率方向元件不再适用。文中提出一种基于正序故障分量的电流方向元件,在无电压信息的情况下,利用电流正序故障分量和正序故障分量定义的基准量之间的相位差来判别故障方向,不仅适用于任何分支节点,而且不受负荷电流的影响。在PSCAD/EMTDC中仿真验证了方向元件动作的正确性。
李振兴 +3 more
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