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Delivering efficient energy for remote communities

机译：为远程社区提供高效的能源

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People living in remote, rural places pay some of the highest electricity costs in the UK. Furthermore, in areas separated from the central grid, residents and businesses may require generators to power their lives and businesses. Relying on engine-or turbine-powered gensets for prime or continuous power is expensive, because electricity is produced at a far higher cost than when bought from a large grid. Off-grid applications also require fuel imports to keep the assets running, further increasing costs. One solution is microgrids - small-scale versions of standard grids that connect buildings and communities to central power sources. A microgrid is simply a local energy grid, a group of interconnected loads and distributed power sources in a self-sufficient system. They can be powered using gensets, batteries and renewable distributed energy resources (DERs) like solar and wind. Microgrids can both connect to the central grid and break off and operate on their own, so communities with a microgrid can produce their own energy and keep the lights on during outages and storms. With the price of renewable energy falling, it has become cost-effective to integrate renewable technologies into local networks. The basic structure of modern hybrid microgrids are the same as traditional models - the difference is using photovoltaics (PV) and wind power to supplement generators. The gensets firm the renewable sources and follow the load. Meanwhile, energy storage batteries help the generators respond to fluctuations in output from the DERs. Renewable energy can make up any percentage of the total peak load - the more renewables used, the less reliance on generators and the lower the fuel and maintenance costs.
机译：居住在偏远的人，农村地区在英国支付了一些最高的电力成本。此外，在与中央网格分离的区域，居民和企业可能需要发电机为他们的生活和企业提供动力。依赖于发动机或涡轮机供电的发电机构进行素数或连续功率是昂贵的，因为电力以低于从大网格的购买时的成本低得多。离网申请还需要燃料进口以保持资产运行，进一步提高成本。一种解决方案是微电网 - 将建筑物和社区连接到中央电源的标准网格的小规模版本。微电网简称为局部能量网格，一组互连的负载和自充足系统中的分布式电源。它们可以使用发电机集，电池和可再生分布式能源（DER）等通电，如太阳能和风。微电网可以连接到中央网格并突破并自己运行，因此具有微电网的社区可以产生自己的能量，并在中断和风暴期间保持灯。随着可再生能源的价格下降，将可再生技术集成到当地网络中变得具有成本效益。现代杂交微电网的基本结构与传统模型相同 - 差异是使用光伏（PV）和风电向补充发生器。 Gensets坚固的可再生能源并遵循负荷。同时，储能电池帮助发电机响应来自DERS输出的波动。可再生能源可以弥补总峰值负荷的任何百分比 - 所使用的可再生能源越多，对发电机的依赖越越野，较低的燃料和维护成本。

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    《Electrical Engineering》 |2021年第5期|12-12|共1页
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