Results 11 to 20 of about 1,005 (97)
水电科技新型电力系统以源（发电）、网（输电）、负荷（用电）、储能的一体化为主体，这是电力系统发展的重要方向。随着新能源的增加，传统的同步发电机可能会减少，导致电力系统的惯性和阻尼减小，从而可能引发电力系统的稳定性问题。虚拟同步控制技术可以模拟同步发电机的运行特性，提高新能源发电系统对电网的主动支持能力，有助于解决由于同步发电机减少带来的稳定性问题。本文基于虚拟同步机（VSG）控制表达式和网络型控制结构，提出了一种协调控制方法，用于调整惯性和阻尼参数，最后通过Matlab/Simulink ...
庆瑜 高, 刚 王
semanticscholar +1 more source
Mechanism of Inertia Loss and Evaluation of Inertia Level in Power Systems with Large Scale New Energy Access [PDF]
[Introduction] In order to meet the national goals of "30·60" - peak carbon emissions by 2030 and achieving carbon neutrality by 2060, an influx of new energy sources such as wind and photovoltaic power is integrated into the system via converter ...
Liwei YU +6 more
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Gaoya dianqi, 2023 虚拟同步发电机（virtual synchronous generator,VSG）型构网储能因其良好的阻尼与惯量支撑特性已被广泛关注，但VSG型构网储能难以抑制有功暂态存在的超调、振荡的同时削减有功稳态偏差，灵活性差。首先建立VSG型构网储能系统有功环的闭环小信号模型，由系统的特征方程、波特图以及根轨迹分析有功指令与电网频率扰动下的系统暂态与稳态特性。接着指出固定参数VSG型构网储能无法兼顾暂态存在的超调、振荡与稳态有功偏差。因此提出一种自适应VSG型构网储能控制策略 ...
赵炳洋, 赵波, 胡娟, 张芳
doaj
Energy Storage Configuration Considering the System Wind Power Reserve Capacity Under High Wind Power Permeability [PDF]
The high proportion penetration of the wind power weakens the inertia and frequency regulation capacity of the power system. The energy storage system (ESS) is widely used in the inertia support and frequency regulation of the power grid with the ...
LIU Hongbo +4 more
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全球能源互联网面对新型电力系统的低惯量趋势，规模庞大而位置分散的温控负荷在参与电力系统频率响应的同时，能够为电网提供虚拟惯量和一次调频支撑将是提升电网频率安全的新思路。为此，以集中-分布式调控框架下的温控负荷集群为研究对象，首先在详细分解控制层调控中心、协调层聚合商、响应层温控负荷终端三者在辅助调频过程中的采样、计算、控制、执行一系列实时任务的基础上，设计了事件触发与时间触发相结合的温控负荷集群终端异步响应机制，实现温控负荷集群功率遵从综合惯性控制律的效果。随后 ...
周特 +6 more
doaj +1 more source
Sub-Synchronous Oscillation Suppression Based on VSG Virtual Impedance Feasible Domains [PDF]
[Objective] The virtual synchronous generator (VSG) system exhibits negative damping characteristics under weak grid connection, which triggers subsynchronous oscillations and leads to system instability.
Qin SUN, Yi DU, Yuxin SUN
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Study on Double Phase-Locked Loop on the Synthetic Inertia Control of Offshore Wind Farm Frequency Regulation [PDF]
To build the new power system with the main body of new energy, the offshore wind farm (OWF) is an important part and has been rapidly developed in coastal cities.
CAI Chuanwei +5 more
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Review of Application on Optimization Strategies for New-Type Power System Based on Reinforcement Learning [PDF]
ObjectivesAs power systems evolve toward higher levels of intelligence and automation, reinforcement learning (RL), a key technology in artificial intelligence, shows great potential in the intelligent development of the power sector.
WANG Kai, YAN Zhengyi, ZHAO Kang
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Gaoya dianqi, 2023 矿区通常地处偏远、电力基础设施薄弱，随着可再生能源发电的占比提高，导致矿区电网呈现弱电网特性。文中提出了面向矿区复杂电网工况的储能控制技术，实现了矿区电网稳定性的提升。首先，文中研究了储能在矿区电网中供电结构及工作模式。其次，针对VSG控制技术在孤岛应急运行模式和弱电网并网运行模式下的运行特性进行分析。再次，针对弱电网下的VSG并网稳定性缺失的问题，提出了改善弱电网下电压稳定性的构网型VSG控制策略，并提出了一种预同步切换策略减少矿区电网工况切换状态过程中的暂态冲击。最后，对所提方法进行仿真案例分析 ...
罗家林 +4 more
doaj
Review of Grid-Forming Energy Storage and Its Applications [PDF]
ObjectivesThe characteristics of low inertia and low damping in “double-high” (high renewable energy penetration and high power electronics application) power system pose significant challenges to grid stability, particularly in terms of frequency and ...
FAN Xuejun, LI Yalou, ZHAO Fei
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