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首页> 外文期刊>Science and Technology for the Built Environment >Demonstration of HVAC chiller control for power grid frequency regulation-Part 2: Discussion of results and considerations for broader deployment
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Demonstration of HVAC chiller control for power grid frequency regulation-Part 2: Discussion of results and considerations for broader deployment

机译：电网频率调节的HVAC冷却器控制演示，第2部分：结果讨论和更广泛部署的考虑

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摘要

Secondary frequency regulation is an electric grid ancillary service that balances the electric power system supply and demand on short time intervals. A companion article (Su and Norford 2015) developed and experimentally demonstrated a practical controller to modify chiller power demand to provide secondary frequency regulation with sufficient performance to meet market qualification requirements. This article compares experimental results to model predictions and to other sources of secondary frequency regulation. Delay time, ramp-rate limits, minimum power, and variable coefficient of performance are identified as factors that contribute to chiller power transient behavior and should be considered when predicting performance. This article additionally introduces results from a second building to assess the applicability of similar chiller control strategies for other HVAC systems. The second building produced less positive results due to communication delays associated with a modified setup and due to less favorable chiller characteristics, such as ramp-rate limitations and compressor cycling. While these constraints may be lessened with changes to chiller settings, the significant variations between the two buildings suggest that for a given site, observations are necessary in addition to design information to ascertain a chiller's suitability for providing secondary frequency regulation.
机译：次级频率调节是电网的辅助服务，可在较短的时间间隔内平衡电力系统的供需。配套文章（Su和Norford，2015年）开发并通过实验证明了一种实用的控制器，可修改冷水机组的电力需求，以提供具有足够性能以满足市场资格要求的次级频率调节。本文将实验结果与模型预测以及次级频率调节的其他来源进行了比较。延迟时间，斜率限制，最小功率和可变的性能系数被认为是导致冷水机功率瞬态行为的因素，在预测性能时应予以考虑。本文还介绍了第二座建筑物的结果，以评估类似的冷却器控制策略在其他HVAC系统中的适用性。由于与修改后的设置相关的通信延迟以及不利的冷水机组特性（例如，升温速率限制和压缩机循环），第二座建筑物产生的积极结果较少。尽管可以通过更改冷水机设置来减轻这些限制，但是两座建筑物之间的显着差异表明，对于给定的站点，除了设计信息以外，还必须进行观察，以确定冷水机是否适合提供次级频率调节。

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