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arXiv 2103.11239eess.SYcs.SY
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光伏-蓄电池并网逆变器在电力系统黑启动中的控制与仿真

Control and Simulation of a Grid-Forming Inverter for Hybrid PV-Battery Plants in Power System Black Start

Quan Nguyen, Mallikarjuna R. Vallem, Bharat Vyakaranam, Ahmad Tbaileh, Xinda Ke, Nader Samaan

摘要:

电力系统恢复是系统规划的重要组成部分。要求电力公司维护具有黑启动能力的发电机,这些发电机可以为输电系统供电,并为不具有黑启动能力的发电机提供起动功率。传统上,水力和柴油机组被用作具有黑启动能力的发电机。随着大规模太阳能发电场的渗透率增加,基于逆变器的发电可以在更快和并行的黑启动中发挥重要作用,从而确保系统可以重新投入使用,而不会出现有限的黑启动发电机所预期的传统延迟。基于逆变器的光伏(PV)发电厂具有适合黑启动的优点。本文提出了一种基于并网逆变器的光伏电池发电厂,可用作黑启动单元的建模,控制和仿真。逆变器控制包括初级和次级控制回路以模仿常规同步机的控制。在时域电磁暂态仿真工具PSCAD中,利用IEEE 9节点系统改造的测试系统对所提出的方法进行了验证。仿真结果表明,在多步黑启动和网络崩溃过程中,电压和频率稳定。

英文摘要:

Power system restoration is an important part of system planning. Power utilities are required to maintain black start capable generators that can energize the transmission system and provide cranking power to non-blackstart capable generators. Traditionally, hydro and diesel units are used as black start capable generators. With the increased penetration of bulk size solar farms, inverter based generation can play an important role in faster and parallel black start thus ensuring system can be brought back into service without the conventional delays that can be expected with limited black start generators. Inverter-based photovoltaic (PV) power plants have advantages that are suitable for black start. This paper proposes the modeling, control, and simulation of a grid-forming inverter-based PV-battery power plant that can be used as a black start unit. The inverter control includes both primary and secondary control loops to imitate the control of a conventional synchronous machine. The proposed approach is verified using a test system modified from the IEEE 9-bus system in the time-domain electromagnetic transient simulation tool PSCAD. The simulation results shows voltage and frequency stability during a multi-step black-start and network energization process.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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