光储发电系统的虚拟转动惯量控制

发布时间：2018-01-11 00:27

本文关键词：光储发电系统的虚拟转动惯量控制　出处：《电力自动化设备》2017年09期 　论文类型：期刊论文

【摘要】：在深入研究光储发电系统控制策略的基础上,阐述蓄电池虚拟转动惯量的概念,分析在频率动态变化过程中蓄电池的电池储能与机械动能之间的能量转换关系,并提出基于光储发电系统的虚拟惯性控制策略。该控制策略通过检测系统频率的变化与蓄电池荷电状态,调节蓄电池的荷电状态变化率与充放电电流的速率,从而短时调节蓄电池储备能量为系统提供惯性支持。通过光伏装机比重约为30%的仿真系统,验证该控制策略在系统出现功率不平衡后,能够利用蓄电池的虚拟惯量快速响应系统频率变化,从而提高了系统的频率稳定性。
[Abstract]:On the basis of deeply studying the control strategy of optical storage power generation system, the concept of virtual moment of inertia of battery is expounded, and the energy conversion relationship between battery energy storage and mechanical kinetic energy is analyzed in the process of dynamic change of frequency. A virtual inertial control strategy based on optical storage generation system is proposed, which adjusts the rate of change of charge state and charge / discharge current of battery by detecting the change of system frequency and the charging state of battery. Therefore, adjusting battery reserve energy for a short time to provide inertial support for the system. Through the PV installed specific gravity of about 30% of the simulation system, verify the control strategy after the system power imbalance. The virtual inertia of battery can quickly respond to the system frequency change, thus improving the frequency stability of the system.
【作者单位】：华北电力大学新能源电力系统国家重点实验室;
【基金】：国家自然科学基金资助项目(51507065) 中央高校基本科研业务费专项资金资助项目(2015MS93)~~
【分类号】：TM61
【正文快照】： 0引言近年来,光伏发电因成本持续降低而始终保持增长潜力,并已显现竞争优势,因此其渗透率在电力系统中逐渐提高。光伏电池通过电力电子变流器接入电网,功率可独立快速调节,能实现最大功率点跟踪(MPPT),并通常配置储能装置,削弱功率波动,降低对电网安全运行的影响[1-3]。然而,

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