学院混合微网展示了资源管理的便捷性

“DEIF 是系统的核心。”承包商说道。“在 DEIF 的帮助下,我们能够对所有这些资源进行战略管理。”

拥有自己微网的学校校园

美国印第安纳州印第安纳波利斯的本戴维斯高中具有多栋建筑,占地面积超过 120 万平方英尺 (110,000 m2),其中容纳约 4,500 名学生。这所学校想要节省电费,因此安装了太阳能和天然气发电机混合系统,这是印第安纳州第一个此类可再生微网。 

该系统包括一个 2 MW 太阳能场、两个 750 kW 的国家燃气发电机,以及与当地公用事业的连接。削峰系统控制学校的电源。当需求达到高于太阳能电源的设定点时,系统将启动燃气发电机来承担负载。Girtz Industries 工程经理 Brent Beissler 解释说,这限制了当地公用事业的电能。 

他说:“电力公司根据每月使用的峰值电量向学校收费。”“如果可以降低该峰值功率,则可以大幅降低电费。”

 

挑战

“我们最初关注的是如何有效、负责地管理所有这些资源,从而为学校带来最大的收益。”总承包商 Johnson Melloh Solutions (JMS) 的分布式能源资源经理 Arash Habibi-Soureh 说道。 

JMS 为 Girtz 分配了发电机组、开关柜和控制装置任务。“在 Girtz Industries,我们的重点是发电机系统。我们正在将产品范围扩展到可再生能源。”Brent Beissler 说道。“首先,我们将自行进行互连逻辑和通信。但是当我们投入这项工作时,我们意识到这十分艰巨。 

“因此,我们开始研究可以为我们实现这种逻辑的系统。”他继续说道。“这就是我了解 DEIF 微网系统的促进因素。借助该系统,我的团队可以专注于其他工作。能够把通信部分从我的工作内容中去除至关重要。这对我们而言,受益匪浅。” 

Indy-case-screen

解决方案

DEIF AGC-4 主电网控制器从距太阳场很短距离的电线杆监控学校的电力需求和公用电源使用情况,Brent Beissler 解释说。它通过光纤链路与现场的主控制室通信。其中,有两个 DEIF AGC-4 自动发电机组控制器 管理削峰功能。它们与另外两个 ASC-4 太阳能混合控制器通信,这两个控制器监视太阳能电池阵列。 

“所有这些 DEIF 产品都立即相互通信以执行削峰功能。”他说道。 

“DEIF is the brains of this operation. Without DEIF we would have no way to strategically manage the energy and the demand output that’s being created onsite that could be intelligently used by the school.”

Arash Habibi-Soureh

Distributed Energy Resources Manager |

The project team inspects the cabinets and switchgear for the DEIF ASC-4 solar hybrid controllers – adjacent to the gas gensets and main system controls.

The outcome 

The school hopes to save 70% from its electricity bill with the hybrid renewables system. In its first months of operation, the system is working as planned, says Brent Beissler. “So far, so good.”

 

“The biggest benefit of this system is giving the school the tools to intelligently, effectively manage their utility costs and energy usage”

Arash Habibi-Soureh

Distributed Energy Resources Manager |

“They’re able to leverage money that would have gone to the power utility – instead of resources such as school programs and teachers. 

“Our most precious resource is kids – students,” he adds. “Being involved in this project makes me feel good and socially responsible. We’re providing a solution that saves money, energy and the environment. It’s a rare triple win today.

DEIF supplied:

DEIF supplied 1 AGC Mains, 2 x ASC-4 solar controllers and 2 x AGC-4 genset controllers for the Ben Davis High School solar and natural gas generator hybrid system. For more information on DEIF’s work in hybrid microgrids, please read more here.

One of DEIF two ASC-4 solar controllers at the school’s microgrid

 

 

Download the full case study

Allan Schmidt

Interested in an efficient and reliable hybrid power solution? Please do not hesitate to contact me.

+45 9614 9691 |