研究目的
Our goal is to find a default inverter setting that will effectively mitigate voltage fluctuations even as grid conditions change. It must be compatible with the current version of IEEE 1547. It should also be compatible with advanced control methods when available. Otherwise, it should not require communications, detailed engineering studies or field commissioning of custom settings. The default settings should also be compatible with future growth in distributed energy resources. These characteristics would facilitate the integration of distributed solar in larger amounts.
研究成果
The AVR block diagram has constant parameters and a simple structure, with default settings for gain (22) and time constant (300s) that work well for any location. DRC and other proposed modes like Volt-Var with average windowing may offer similar performance, but they are not specified in IEEE 1547. The recommended settings could work out-of-the-box for most applications, without detailed engineering studies or smart-grid communication systems.
研究不足
The study is based on simulations and may not fully capture all real-world conditions. The effectiveness of the proposed settings may vary depending on the specific characteristics of the distribution system and the level of solar penetration.
1：Experimental Design and Method Selection:
The methodology involves time-series power flow simulations to compare the performance of several reactive power control modes allowed in the new IEEE 1547. The study focuses on the voltage-reactive power mode (volt-var) as a universal default setting.
2：The study focuses on the voltage-reactive power mode (volt-var) as a universal default setting.
Sample Selection and Data Sources:
2. Sample Selection and Data Sources: The study uses simulations done using InvControl and ExpControl components of OpenDSS, simulating both clear and (scattered) cloudy days at 1s steps.
3：List of Experimental Equipment and Materials:
The simulations were conducted using OpenDSS software, specifically the InvControl and ExpControl components.
4：Experimental Procedures and Operational Workflow:
The output metrics include integrated real and reactive power over one day, ΣP and ΣQ, plus the voltage fluctuation. The study uses the greatest voltage change, ?V, because utilities impose an explicit limit of 2% or 3% on ?V.
5：Data Analysis Methods:
The study compares the performance of several reactive power control modes, focusing on the voltage-reactive power mode (volt-var) with specific settings for gain and time constant.
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